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index bf5d5f15a3b54f1e1a0a2068990e899fd869d435..9038f190ece061696a3290acf8f1e9951e9d0a6c 100644 (file)
--- a/diff.c
+++ b/diff.c
#include "attr.h"
#include "run-command.h"
#include "utf8.h"
+#include "userdiff.h"
+#include "sigchain.h"
+#include "submodule.h"
+#include "ll-merge.h"
#ifdef NO_FAST_WORKING_DIRECTORY
#define FAST_WORKING_DIRECTORY 0
#endif
static int diff_detect_rename_default;
-static int diff_rename_limit_default = 200;
+static int diff_rename_limit_default = 400;
+static int diff_suppress_blank_empty;
int diff_use_color_default = -1;
+static const char *diff_word_regex_cfg;
static const char *external_diff_cmd_cfg;
int diff_auto_refresh_index = 1;
+static int diff_mnemonic_prefix;
+static int diff_no_prefix;
+static int diff_dirstat_permille_default = 30;
+static struct diff_options default_diff_options;
static char diff_colors[][COLOR_MAXLEN] = {
- "\033[m", /* reset */
- "", /* PLAIN (normal) */
- "\033[1m", /* METAINFO (bold) */
- "\033[36m", /* FRAGINFO (cyan) */
- "\033[31m", /* OLD (red) */
- "\033[32m", /* NEW (green) */
- "\033[33m", /* COMMIT (yellow) */
- "\033[41m", /* WHITESPACE (red background) */
+ GIT_COLOR_RESET,
+ GIT_COLOR_NORMAL, /* PLAIN */
+ GIT_COLOR_BOLD, /* METAINFO */
+ GIT_COLOR_CYAN, /* FRAGINFO */
+ GIT_COLOR_RED, /* OLD */
+ GIT_COLOR_GREEN, /* NEW */
+ GIT_COLOR_YELLOW, /* COMMIT */
+ GIT_COLOR_BG_RED, /* WHITESPACE */
+ GIT_COLOR_NORMAL, /* FUNCINFO */
};
static int parse_diff_color_slot(const char *var, int ofs)
return DIFF_COMMIT;
if (!strcasecmp(var+ofs, "whitespace"))
return DIFF_WHITESPACE;
- die("bad config variable '%s'", var);
+ if (!strcasecmp(var+ofs, "func"))
+ return DIFF_FUNCINFO;
+ return -1;
}
-static struct ll_diff_driver {
- const char *name;
- struct ll_diff_driver *next;
- const char *cmd;
-} *user_diff, **user_diff_tail;
-
-/*
- * Currently there is only "diff.<drivername>.command" variable;
- * because there are "diff.color.<slot>" variables, we are parsing
- * this in a bit convoluted way to allow low level diff driver
- * called "color".
- */
-static int parse_lldiff_command(const char *var, const char *ep, const char *value)
+static int parse_dirstat_params(struct diff_options *options, const char *params,
+ struct strbuf *errmsg)
{
- const char *name;
- int namelen;
- struct ll_diff_driver *drv;
+ const char *p = params;
+ int p_len, ret = 0;
+
+ while (*p) {
+ p_len = strchrnul(p, ',') - p;
+ if (!memcmp(p, "changes", p_len)) {
+ DIFF_OPT_CLR(options, DIRSTAT_BY_LINE);
+ DIFF_OPT_CLR(options, DIRSTAT_BY_FILE);
+ } else if (!memcmp(p, "lines", p_len)) {
+ DIFF_OPT_SET(options, DIRSTAT_BY_LINE);
+ DIFF_OPT_CLR(options, DIRSTAT_BY_FILE);
+ } else if (!memcmp(p, "files", p_len)) {
+ DIFF_OPT_CLR(options, DIRSTAT_BY_LINE);
+ DIFF_OPT_SET(options, DIRSTAT_BY_FILE);
+ } else if (!memcmp(p, "noncumulative", p_len)) {
+ DIFF_OPT_CLR(options, DIRSTAT_CUMULATIVE);
+ } else if (!memcmp(p, "cumulative", p_len)) {
+ DIFF_OPT_SET(options, DIRSTAT_CUMULATIVE);
+ } else if (isdigit(*p)) {
+ char *end;
+ int permille = strtoul(p, &end, 10) * 10;
+ if (*end == '.' && isdigit(*++end)) {
+ /* only use first digit */
+ permille += *end - '0';
+ /* .. and ignore any further digits */
+ while (isdigit(*++end))
+ ; /* nothing */
+ }
+ if (end - p == p_len)
+ options->dirstat_permille = permille;
+ else {
+ strbuf_addf(errmsg, _(" Failed to parse dirstat cut-off percentage '%.*s'\n"),
+ p_len, p);
+ ret++;
+ }
+ } else {
+ strbuf_addf(errmsg, _(" Unknown dirstat parameter '%.*s'\n"),
+ p_len, p);
+ ret++;
+ }
- name = var + 5;
- namelen = ep - name;
- for (drv = user_diff; drv; drv = drv->next)
- if (!strncmp(drv->name, name, namelen) && !drv->name[namelen])
- break;
- if (!drv) {
- drv = xcalloc(1, sizeof(struct ll_diff_driver));
- drv->name = xmemdupz(name, namelen);
- if (!user_diff_tail)
- user_diff_tail = &user_diff;
- *user_diff_tail = drv;
- user_diff_tail = &(drv->next);
- }
+ p += p_len;
- return git_config_string(&(drv->cmd), var, value);
+ if (*p)
+ p++; /* more parameters, swallow separator */
+ }
+ return ret;
}
-/*
- * 'diff.<what>.funcname' attribute can be specified in the configuration
- * to define a customized regexp to find the beginning of a function to
- * be used for hunk header lines of "diff -p" style output.
- */
-static struct funcname_pattern {
- char *name;
- char *pattern;
- struct funcname_pattern *next;
-} *funcname_pattern_list;
-
-static int parse_funcname_pattern(const char *var, const char *ep, const char *value)
+static int git_config_rename(const char *var, const char *value)
{
- const char *name;
- int namelen;
- struct funcname_pattern *pp;
-
- name = var + 5; /* "diff." */
- namelen = ep - name;
-
- for (pp = funcname_pattern_list; pp; pp = pp->next)
- if (!strncmp(pp->name, name, namelen) && !pp->name[namelen])
- break;
- if (!pp) {
- pp = xcalloc(1, sizeof(*pp));
- pp->name = xmemdupz(name, namelen);
- pp->next = funcname_pattern_list;
- funcname_pattern_list = pp;
- }
- free(pp->pattern);
- pp->pattern = xstrdup(value);
- return 0;
+ if (!value)
+ return DIFF_DETECT_RENAME;
+ if (!strcasecmp(value, "copies") || !strcasecmp(value, "copy"))
+ return DIFF_DETECT_COPY;
+ return git_config_bool(var,value) ? DIFF_DETECT_RENAME : 0;
}
/*
return 0;
}
if (!strcmp(var, "diff.renames")) {
- if (!value)
- diff_detect_rename_default = DIFF_DETECT_RENAME;
- else if (!strcasecmp(value, "copies") ||
- !strcasecmp(value, "copy"))
- diff_detect_rename_default = DIFF_DETECT_COPY;
- else if (git_config_bool(var,value))
- diff_detect_rename_default = DIFF_DETECT_RENAME;
+ diff_detect_rename_default = git_config_rename(var, value);
return 0;
}
if (!strcmp(var, "diff.autorefreshindex")) {
diff_auto_refresh_index = git_config_bool(var, value);
return 0;
}
+ if (!strcmp(var, "diff.mnemonicprefix")) {
+ diff_mnemonic_prefix = git_config_bool(var, value);
+ return 0;
+ }
+ if (!strcmp(var, "diff.noprefix")) {
+ diff_no_prefix = git_config_bool(var, value);
+ return 0;
+ }
if (!strcmp(var, "diff.external"))
return git_config_string(&external_diff_cmd_cfg, var, value);
- if (!prefixcmp(var, "diff.")) {
- const char *ep = strrchr(var, '.');
+ if (!strcmp(var, "diff.wordregex"))
+ return git_config_string(&diff_word_regex_cfg, var, value);
- if (ep != var + 4 && !strcmp(ep, ".command"))
- return parse_lldiff_command(var, ep, value);
- }
+ if (!strcmp(var, "diff.ignoresubmodules"))
+ handle_ignore_submodules_arg(&default_diff_options, value);
return git_diff_basic_config(var, value, cb);
}
return 0;
}
+ switch (userdiff_config(var, value)) {
+ case 0: break;
+ case -1: return -1;
+ default: return 0;
+ }
+
if (!prefixcmp(var, "diff.color.") || !prefixcmp(var, "color.diff.")) {
int slot = parse_diff_color_slot(var, 11);
+ if (slot < 0)
+ return 0;
if (!value)
return config_error_nonbool(var);
color_parse(value, var, diff_colors[slot]);
return 0;
}
- if (!prefixcmp(var, "diff.")) {
- const char *ep = strrchr(var, '.');
- if (ep != var + 4) {
- if (!strcmp(ep, ".funcname")) {
- if (!value)
- return config_error_nonbool(var);
- return parse_funcname_pattern(var, ep, value);
- }
- }
+ /* like GNU diff's --suppress-blank-empty option */
+ if (!strcmp(var, "diff.suppressblankempty") ||
+ /* for backwards compatibility */
+ !strcmp(var, "diff.suppress-blank-empty")) {
+ diff_suppress_blank_empty = git_config_bool(var, value);
+ return 0;
+ }
+
+ if (!strcmp(var, "diff.dirstat")) {
+ struct strbuf errmsg = STRBUF_INIT;
+ default_diff_options.dirstat_permille = diff_dirstat_permille_default;
+ if (parse_dirstat_params(&default_diff_options, value, &errmsg))
+ warning(_("Found errors in 'diff.dirstat' config variable:\n%s"),
+ errmsg.buf);
+ strbuf_release(&errmsg);
+ diff_dirstat_permille_default = default_diff_options.dirstat_permille;
+ return 0;
}
+ if (!prefixcmp(var, "submodule."))
+ return parse_submodule_config_option(var, value);
+
return git_color_default_config(var, value, cb);
}
{
int need_one = quote_c_style(one, NULL, NULL, 1);
int need_two = quote_c_style(two, NULL, NULL, 1);
- struct strbuf res;
+ struct strbuf res = STRBUF_INIT;
- strbuf_init(&res, 0);
if (need_one + need_two) {
strbuf_addch(&res, '"');
quote_c_style(one, &res, NULL, 1);
char tmp_path[PATH_MAX];
} diff_temp[2];
+typedef unsigned long (*sane_truncate_fn)(char *line, unsigned long len);
+
+struct emit_callback {
+ int color_diff;
+ unsigned ws_rule;
+ int blank_at_eof_in_preimage;
+ int blank_at_eof_in_postimage;
+ int lno_in_preimage;
+ int lno_in_postimage;
+ sane_truncate_fn truncate;
+ const char **label_path;
+ struct diff_words_data *diff_words;
+ struct diff_options *opt;
+ int *found_changesp;
+ struct strbuf *header;
+};
+
static int count_lines(const char *data, int size)
{
int count, ch, completely_empty = 1, nl_just_seen = 0;
return count;
}
+static int fill_mmfile(mmfile_t *mf, struct diff_filespec *one)
+{
+ if (!DIFF_FILE_VALID(one)) {
+ mf->ptr = (char *)""; /* does not matter */
+ mf->size = 0;
+ return 0;
+ }
+ else if (diff_populate_filespec(one, 0))
+ return -1;
+
+ mf->ptr = one->data;
+ mf->size = one->size;
+ return 0;
+}
+
+/* like fill_mmfile, but only for size, so we can avoid retrieving blob */
+static unsigned long diff_filespec_size(struct diff_filespec *one)
+{
+ if (!DIFF_FILE_VALID(one))
+ return 0;
+ diff_populate_filespec(one, 1);
+ return one->size;
+}
+
+static int count_trailing_blank(mmfile_t *mf, unsigned ws_rule)
+{
+ char *ptr = mf->ptr;
+ long size = mf->size;
+ int cnt = 0;
+
+ if (!size)
+ return cnt;
+ ptr += size - 1; /* pointing at the very end */
+ if (*ptr != '\n')
+ ; /* incomplete line */
+ else
+ ptr--; /* skip the last LF */
+ while (mf->ptr < ptr) {
+ char *prev_eol;
+ for (prev_eol = ptr; mf->ptr <= prev_eol; prev_eol--)
+ if (*prev_eol == '\n')
+ break;
+ if (!ws_blank_line(prev_eol + 1, ptr - prev_eol, ws_rule))
+ break;
+ cnt++;
+ ptr = prev_eol - 1;
+ }
+ return cnt;
+}
+
+static void check_blank_at_eof(mmfile_t *mf1, mmfile_t *mf2,
+ struct emit_callback *ecbdata)
+{
+ int l1, l2, at;
+ unsigned ws_rule = ecbdata->ws_rule;
+ l1 = count_trailing_blank(mf1, ws_rule);
+ l2 = count_trailing_blank(mf2, ws_rule);
+ if (l2 <= l1) {
+ ecbdata->blank_at_eof_in_preimage = 0;
+ ecbdata->blank_at_eof_in_postimage = 0;
+ return;
+ }
+ at = count_lines(mf1->ptr, mf1->size);
+ ecbdata->blank_at_eof_in_preimage = (at - l1) + 1;
+
+ at = count_lines(mf2->ptr, mf2->size);
+ ecbdata->blank_at_eof_in_postimage = (at - l2) + 1;
+}
+
+static void emit_line_0(struct diff_options *o, const char *set, const char *reset,
+ int first, const char *line, int len)
+{
+ int has_trailing_newline, has_trailing_carriage_return;
+ int nofirst;
+ FILE *file = o->file;
+
+ if (o->output_prefix) {
+ struct strbuf *msg = NULL;
+ msg = o->output_prefix(o, o->output_prefix_data);
+ assert(msg);
+ fwrite(msg->buf, msg->len, 1, file);
+ }
+
+ if (len == 0) {
+ has_trailing_newline = (first == '\n');
+ has_trailing_carriage_return = (!has_trailing_newline &&
+ (first == '\r'));
+ nofirst = has_trailing_newline || has_trailing_carriage_return;
+ } else {
+ has_trailing_newline = (len > 0 && line[len-1] == '\n');
+ if (has_trailing_newline)
+ len--;
+ has_trailing_carriage_return = (len > 0 && line[len-1] == '\r');
+ if (has_trailing_carriage_return)
+ len--;
+ nofirst = 0;
+ }
+
+ if (len || !nofirst) {
+ fputs(set, file);
+ if (!nofirst)
+ fputc(first, file);
+ fwrite(line, len, 1, file);
+ fputs(reset, file);
+ }
+ if (has_trailing_carriage_return)
+ fputc('\r', file);
+ if (has_trailing_newline)
+ fputc('\n', file);
+}
+
+static void emit_line(struct diff_options *o, const char *set, const char *reset,
+ const char *line, int len)
+{
+ emit_line_0(o, set, reset, line[0], line+1, len-1);
+}
+
+static int new_blank_line_at_eof(struct emit_callback *ecbdata, const char *line, int len)
+{
+ if (!((ecbdata->ws_rule & WS_BLANK_AT_EOF) &&
+ ecbdata->blank_at_eof_in_preimage &&
+ ecbdata->blank_at_eof_in_postimage &&
+ ecbdata->blank_at_eof_in_preimage <= ecbdata->lno_in_preimage &&
+ ecbdata->blank_at_eof_in_postimage <= ecbdata->lno_in_postimage))
+ return 0;
+ return ws_blank_line(line, len, ecbdata->ws_rule);
+}
+
+static void emit_add_line(const char *reset,
+ struct emit_callback *ecbdata,
+ const char *line, int len)
+{
+ const char *ws = diff_get_color(ecbdata->color_diff, DIFF_WHITESPACE);
+ const char *set = diff_get_color(ecbdata->color_diff, DIFF_FILE_NEW);
+
+ if (!*ws)
+ emit_line_0(ecbdata->opt, set, reset, '+', line, len);
+ else if (new_blank_line_at_eof(ecbdata, line, len))
+ /* Blank line at EOF - paint '+' as well */
+ emit_line_0(ecbdata->opt, ws, reset, '+', line, len);
+ else {
+ /* Emit just the prefix, then the rest. */
+ emit_line_0(ecbdata->opt, set, reset, '+', "", 0);
+ ws_check_emit(line, len, ecbdata->ws_rule,
+ ecbdata->opt->file, set, reset, ws);
+ }
+}
+
+static void emit_hunk_header(struct emit_callback *ecbdata,
+ const char *line, int len)
+{
+ const char *plain = diff_get_color(ecbdata->color_diff, DIFF_PLAIN);
+ const char *frag = diff_get_color(ecbdata->color_diff, DIFF_FRAGINFO);
+ const char *func = diff_get_color(ecbdata->color_diff, DIFF_FUNCINFO);
+ const char *reset = diff_get_color(ecbdata->color_diff, DIFF_RESET);
+ static const char atat[2] = { '@', '@' };
+ const char *cp, *ep;
+ struct strbuf msgbuf = STRBUF_INIT;
+ int org_len = len;
+ int i = 1;
+
+ /*
+ * As a hunk header must begin with "@@ -<old>, +<new> @@",
+ * it always is at least 10 bytes long.
+ */
+ if (len < 10 ||
+ memcmp(line, atat, 2) ||
+ !(ep = memmem(line + 2, len - 2, atat, 2))) {
+ emit_line(ecbdata->opt, plain, reset, line, len);
+ return;
+ }
+ ep += 2; /* skip over @@ */
+
+ /* The hunk header in fraginfo color */
+ strbuf_add(&msgbuf, frag, strlen(frag));
+ strbuf_add(&msgbuf, line, ep - line);
+ strbuf_add(&msgbuf, reset, strlen(reset));
+
+ /*
+ * trailing "\r\n"
+ */
+ for ( ; i < 3; i++)
+ if (line[len - i] == '\r' || line[len - i] == '\n')
+ len--;
+
+ /* blank before the func header */
+ for (cp = ep; ep - line < len; ep++)
+ if (*ep != ' ' && *ep != '\t')
+ break;
+ if (ep != cp) {
+ strbuf_add(&msgbuf, plain, strlen(plain));
+ strbuf_add(&msgbuf, cp, ep - cp);
+ strbuf_add(&msgbuf, reset, strlen(reset));
+ }
+
+ if (ep < line + len) {
+ strbuf_add(&msgbuf, func, strlen(func));
+ strbuf_add(&msgbuf, ep, line + len - ep);
+ strbuf_add(&msgbuf, reset, strlen(reset));
+ }
+
+ strbuf_add(&msgbuf, line + len, org_len - len);
+ emit_line(ecbdata->opt, "", "", msgbuf.buf, msgbuf.len);
+ strbuf_release(&msgbuf);
+}
+
+static struct diff_tempfile *claim_diff_tempfile(void) {
+ int i;
+ for (i = 0; i < ARRAY_SIZE(diff_temp); i++)
+ if (!diff_temp[i].name)
+ return diff_temp + i;
+ die("BUG: diff is failing to clean up its tempfiles");
+}
+
+static int remove_tempfile_installed;
+
+static void remove_tempfile(void)
+{
+ int i;
+ for (i = 0; i < ARRAY_SIZE(diff_temp); i++) {
+ if (diff_temp[i].name == diff_temp[i].tmp_path)
+ unlink_or_warn(diff_temp[i].name);
+ diff_temp[i].name = NULL;
+ }
+}
+
+static void remove_tempfile_on_signal(int signo)
+{
+ remove_tempfile();
+ sigchain_pop(signo);
+ raise(signo);
+}
+
static void print_line_count(FILE *file, int count)
{
switch (count) {
}
}
-static void copy_file_with_prefix(FILE *file,
- int prefix, const char *data, int size,
- const char *set, const char *reset)
+static void emit_rewrite_lines(struct emit_callback *ecb,
+ int prefix, const char *data, int size)
{
- int ch, nl_just_seen = 1;
- while (0 < size--) {
- ch = *data++;
- if (nl_just_seen) {
- fputs(set, file);
- putc(prefix, file);
+ const char *endp = NULL;
+ static const char *nneof = " No newline at end of file\n";
+ const char *old = diff_get_color(ecb->color_diff, DIFF_FILE_OLD);
+ const char *reset = diff_get_color(ecb->color_diff, DIFF_RESET);
+
+ while (0 < size) {
+ int len;
+
+ endp = memchr(data, '\n', size);
+ len = endp ? (endp - data + 1) : size;
+ if (prefix != '+') {
+ ecb->lno_in_preimage++;
+ emit_line_0(ecb->opt, old, reset, '-',
+ data, len);
+ } else {
+ ecb->lno_in_postimage++;
+ emit_add_line(reset, ecb, data, len);
}
- if (ch == '\n') {
- nl_just_seen = 1;
- fputs(reset, file);
- } else
- nl_just_seen = 0;
- putc(ch, file);
+ size -= len;
+ data += len;
+ }
+ if (!endp) {
+ const char *plain = diff_get_color(ecb->color_diff,
+ DIFF_PLAIN);
+ emit_line_0(ecb->opt, plain, reset, '\\',
+ nneof, strlen(nneof));
}
- if (!nl_just_seen)
- fprintf(file, "%s\n\\ No newline at end of file\n", reset);
}
static void emit_rewrite_diff(const char *name_a,
const char *name_b,
struct diff_filespec *one,
struct diff_filespec *two,
+ struct userdiff_driver *textconv_one,
+ struct userdiff_driver *textconv_two,
struct diff_options *o)
{
int lc_a, lc_b;
const char *name_a_tab, *name_b_tab;
const char *metainfo = diff_get_color(color_diff, DIFF_METAINFO);
const char *fraginfo = diff_get_color(color_diff, DIFF_FRAGINFO);
- const char *old = diff_get_color(color_diff, DIFF_FILE_OLD);
- const char *new = diff_get_color(color_diff, DIFF_FILE_NEW);
const char *reset = diff_get_color(color_diff, DIFF_RESET);
static struct strbuf a_name = STRBUF_INIT, b_name = STRBUF_INIT;
+ const char *a_prefix, *b_prefix;
+ char *data_one, *data_two;
+ size_t size_one, size_two;
+ struct emit_callback ecbdata;
+ char *line_prefix = "";
+ struct strbuf *msgbuf;
+
+ if (o && o->output_prefix) {
+ msgbuf = o->output_prefix(o, o->output_prefix_data);
+ line_prefix = msgbuf->buf;
+ }
+
+ if (diff_mnemonic_prefix && DIFF_OPT_TST(o, REVERSE_DIFF)) {
+ a_prefix = o->b_prefix;
+ b_prefix = o->a_prefix;
+ } else {
+ a_prefix = o->a_prefix;
+ b_prefix = o->b_prefix;
+ }
name_a += (*name_a == '/');
name_b += (*name_b == '/');
strbuf_reset(&a_name);
strbuf_reset(&b_name);
- quote_two_c_style(&a_name, o->a_prefix, name_a, 0);
- quote_two_c_style(&b_name, o->b_prefix, name_b, 0);
+ quote_two_c_style(&a_name, a_prefix, name_a, 0);
+ quote_two_c_style(&b_name, b_prefix, name_b, 0);
+
+ size_one = fill_textconv(textconv_one, one, &data_one);
+ size_two = fill_textconv(textconv_two, two, &data_two);
+
+ memset(&ecbdata, 0, sizeof(ecbdata));
+ ecbdata.color_diff = color_diff;
+ ecbdata.found_changesp = &o->found_changes;
+ ecbdata.ws_rule = whitespace_rule(name_b ? name_b : name_a);
+ ecbdata.opt = o;
+ if (ecbdata.ws_rule & WS_BLANK_AT_EOF) {
+ mmfile_t mf1, mf2;
+ mf1.ptr = (char *)data_one;
+ mf2.ptr = (char *)data_two;
+ mf1.size = size_one;
+ mf2.size = size_two;
+ check_blank_at_eof(&mf1, &mf2, &ecbdata);
+ }
+ ecbdata.lno_in_preimage = 1;
+ ecbdata.lno_in_postimage = 1;
- diff_populate_filespec(one, 0);
- diff_populate_filespec(two, 0);
- lc_a = count_lines(one->data, one->size);
- lc_b = count_lines(two->data, two->size);
+ lc_a = count_lines(data_one, size_one);
+ lc_b = count_lines(data_two, size_two);
fprintf(o->file,
- "%s--- %s%s%s\n%s+++ %s%s%s\n%s@@ -",
- metainfo, a_name.buf, name_a_tab, reset,
- metainfo, b_name.buf, name_b_tab, reset, fraginfo);
- print_line_count(o->file, lc_a);
+ "%s%s--- %s%s%s\n%s%s+++ %s%s%s\n%s%s@@ -",
+ line_prefix, metainfo, a_name.buf, name_a_tab, reset,
+ line_prefix, metainfo, b_name.buf, name_b_tab, reset,
+ line_prefix, fraginfo);
+ if (!o->irreversible_delete)
+ print_line_count(o->file, lc_a);
+ else
+ fprintf(o->file, "?,?");
fprintf(o->file, " +");
print_line_count(o->file, lc_b);
fprintf(o->file, " @@%s\n", reset);
- if (lc_a)
- copy_file_with_prefix(o->file, '-', one->data, one->size, old, reset);
+ if (lc_a && !o->irreversible_delete)
+ emit_rewrite_lines(&ecbdata, '-', data_one, size_one);
if (lc_b)
- copy_file_with_prefix(o->file, '+', two->data, two->size, new, reset);
-}
-
-static int fill_mmfile(mmfile_t *mf, struct diff_filespec *one)
-{
- if (!DIFF_FILE_VALID(one)) {
- mf->ptr = (char *)""; /* does not matter */
- mf->size = 0;
- return 0;
- }
- else if (diff_populate_filespec(one, 0))
- return -1;
- mf->ptr = one->data;
- mf->size = one->size;
- return 0;
+ emit_rewrite_lines(&ecbdata, '+', data_two, size_two);
+ if (textconv_one)
+ free((char *)data_one);
+ if (textconv_two)
+ free((char *)data_two);
}
struct diff_words_buffer {
mmfile_t text;
long alloc;
- long current; /* output pointer */
- int suppressed_newline;
+ struct diff_words_orig {
+ const char *begin, *end;
+ } *orig;
+ int orig_nr, orig_alloc;
};
static void diff_words_append(char *line, unsigned long len,
struct diff_words_buffer *buffer)
{
- if (buffer->text.size + len > buffer->alloc) {
- buffer->alloc = (buffer->text.size + len) * 3 / 2;
- buffer->text.ptr = xrealloc(buffer->text.ptr, buffer->alloc);
- }
+ ALLOC_GROW(buffer->text.ptr, buffer->text.size + len, buffer->alloc);
line++;
len--;
memcpy(buffer->text.ptr + buffer->text.size, line, len);
buffer->text.size += len;
+ buffer->text.ptr[buffer->text.size] = '\0';
}
+struct diff_words_style_elem {
+ const char *prefix;
+ const char *suffix;
+ const char *color; /* NULL; filled in by the setup code if
+ * color is enabled */
+};
+
+struct diff_words_style {
+ enum diff_words_type type;
+ struct diff_words_style_elem new, old, ctx;
+ const char *newline;
+};
+
+static struct diff_words_style diff_words_styles[] = {
+ { DIFF_WORDS_PORCELAIN, {"+", "\n"}, {"-", "\n"}, {" ", "\n"}, "~\n" },
+ { DIFF_WORDS_PLAIN, {"{+", "+}"}, {"[-", "-]"}, {"", ""}, "\n" },
+ { DIFF_WORDS_COLOR, {"", ""}, {"", ""}, {"", ""}, "\n" }
+};
+
struct diff_words_data {
- struct xdiff_emit_state xm;
struct diff_words_buffer minus, plus;
- FILE *file;
+ const char *current_plus;
+ int last_minus;
+ struct diff_options *opt;
+ regex_t *word_regex;
+ enum diff_words_type type;
+ struct diff_words_style *style;
};
-static void print_word(FILE *file, struct diff_words_buffer *buffer, int len, int color,
- int suppress_newline)
+static int fn_out_diff_words_write_helper(FILE *fp,
+ struct diff_words_style_elem *st_el,
+ const char *newline,
+ size_t count, const char *buf,
+ const char *line_prefix)
{
- const char *ptr;
- int eol = 0;
+ int print = 0;
+
+ while (count) {
+ char *p = memchr(buf, '\n', count);
+ if (print)
+ fputs(line_prefix, fp);
+ if (p != buf) {
+ if (st_el->color && fputs(st_el->color, fp) < 0)
+ return -1;
+ if (fputs(st_el->prefix, fp) < 0 ||
+ fwrite(buf, p ? p - buf : count, 1, fp) != 1 ||
+ fputs(st_el->suffix, fp) < 0)
+ return -1;
+ if (st_el->color && *st_el->color
+ && fputs(GIT_COLOR_RESET, fp) < 0)
+ return -1;
+ }
+ if (!p)
+ return 0;
+ if (fputs(newline, fp) < 0)
+ return -1;
+ count -= p + 1 - buf;
+ buf = p + 1;
+ print = 1;
+ }
+ return 0;
+}
+
+/*
+ * '--color-words' algorithm can be described as:
+ *
+ * 1. collect a the minus/plus lines of a diff hunk, divided into
+ * minus-lines and plus-lines;
+ *
+ * 2. break both minus-lines and plus-lines into words and
+ * place them into two mmfile_t with one word for each line;
+ *
+ * 3. use xdiff to run diff on the two mmfile_t to get the words level diff;
+ *
+ * And for the common parts of the both file, we output the plus side text.
+ * diff_words->current_plus is used to trace the current position of the plus file
+ * which printed. diff_words->last_minus is used to trace the last minus word
+ * printed.
+ *
+ * For '--graph' to work with '--color-words', we need to output the graph prefix
+ * on each line of color words output. Generally, there are two conditions on
+ * which we should output the prefix.
+ *
+ * 1. diff_words->last_minus == 0 &&
+ * diff_words->current_plus == diff_words->plus.text.ptr
+ *
+ * that is: the plus text must start as a new line, and if there is no minus
+ * word printed, a graph prefix must be printed.
+ *
+ * 2. diff_words->current_plus > diff_words->plus.text.ptr &&
+ * *(diff_words->current_plus - 1) == '\n'
+ *
+ * that is: a graph prefix must be printed following a '\n'
+ */
+static int color_words_output_graph_prefix(struct diff_words_data *diff_words)
+{
+ if ((diff_words->last_minus == 0 &&
+ diff_words->current_plus == diff_words->plus.text.ptr) ||
+ (diff_words->current_plus > diff_words->plus.text.ptr &&
+ *(diff_words->current_plus - 1) == '\n')) {
+ return 1;
+ } else {
+ return 0;
+ }
+}
- if (len == 0)
+static void fn_out_diff_words_aux(void *priv, char *line, unsigned long len)
+{
+ struct diff_words_data *diff_words = priv;
+ struct diff_words_style *style = diff_words->style;
+ int minus_first, minus_len, plus_first, plus_len;
+ const char *minus_begin, *minus_end, *plus_begin, *plus_end;
+ struct diff_options *opt = diff_words->opt;
+ struct strbuf *msgbuf;
+ char *line_prefix = "";
+
+ if (line[0] != '@' || parse_hunk_header(line, len,
+ &minus_first, &minus_len, &plus_first, &plus_len))
return;
- ptr = buffer->text.ptr + buffer->current;
- buffer->current += len;
+ assert(opt);
+ if (opt->output_prefix) {
+ msgbuf = opt->output_prefix(opt, opt->output_prefix_data);
+ line_prefix = msgbuf->buf;
+ }
+
+ /* POSIX requires that first be decremented by one if len == 0... */
+ if (minus_len) {
+ minus_begin = diff_words->minus.orig[minus_first].begin;
+ minus_end =
+ diff_words->minus.orig[minus_first + minus_len - 1].end;
+ } else
+ minus_begin = minus_end =
+ diff_words->minus.orig[minus_first].end;
+
+ if (plus_len) {
+ plus_begin = diff_words->plus.orig[plus_first].begin;
+ plus_end = diff_words->plus.orig[plus_first + plus_len - 1].end;
+ } else
+ plus_begin = plus_end = diff_words->plus.orig[plus_first].end;
- if (ptr[len - 1] == '\n') {
- eol = 1;
- len--;
+ if (color_words_output_graph_prefix(diff_words)) {
+ fputs(line_prefix, diff_words->opt->file);
+ }
+ if (diff_words->current_plus != plus_begin) {
+ fn_out_diff_words_write_helper(diff_words->opt->file,
+ &style->ctx, style->newline,
+ plus_begin - diff_words->current_plus,
+ diff_words->current_plus, line_prefix);
+ if (*(plus_begin - 1) == '\n')
+ fputs(line_prefix, diff_words->opt->file);
+ }
+ if (minus_begin != minus_end) {
+ fn_out_diff_words_write_helper(diff_words->opt->file,
+ &style->old, style->newline,
+ minus_end - minus_begin, minus_begin,
+ line_prefix);
+ }
+ if (plus_begin != plus_end) {
+ fn_out_diff_words_write_helper(diff_words->opt->file,
+ &style->new, style->newline,
+ plus_end - plus_begin, plus_begin,
+ line_prefix);
}
- fputs(diff_get_color(1, color), file);
- fwrite(ptr, len, 1, file);
- fputs(diff_get_color(1, DIFF_RESET), file);
+ diff_words->current_plus = plus_end;
+ diff_words->last_minus = minus_first;
+}
- if (eol) {
- if (suppress_newline)
- buffer->suppressed_newline = 1;
- else
- putc('\n', file);
+/* This function starts looking at *begin, and returns 0 iff a word was found. */
+static int find_word_boundaries(mmfile_t *buffer, regex_t *word_regex,
+ int *begin, int *end)
+{
+ if (word_regex && *begin < buffer->size) {
+ regmatch_t match[1];
+ if (!regexec(word_regex, buffer->ptr + *begin, 1, match, 0)) {
+ char *p = memchr(buffer->ptr + *begin + match[0].rm_so,
+ '\n', match[0].rm_eo - match[0].rm_so);
+ *end = p ? p - buffer->ptr : match[0].rm_eo + *begin;
+ *begin += match[0].rm_so;
+ return *begin >= *end;
+ }
+ return -1;
}
+
+ /* find the next word */
+ while (*begin < buffer->size && isspace(buffer->ptr[*begin]))
+ (*begin)++;
+ if (*begin >= buffer->size)
+ return -1;
+
+ /* find the end of the word */
+ *end = *begin + 1;
+ while (*end < buffer->size && !isspace(buffer->ptr[*end]))
+ (*end)++;
+
+ return 0;
}
-static void fn_out_diff_words_aux(void *priv, char *line, unsigned long len)
+/*
+ * This function splits the words in buffer->text, stores the list with
+ * newline separator into out, and saves the offsets of the original words
+ * in buffer->orig.
+ */
+static void diff_words_fill(struct diff_words_buffer *buffer, mmfile_t *out,
+ regex_t *word_regex)
{
- struct diff_words_data *diff_words = priv;
+ int i, j;
+ long alloc = 0;
- if (diff_words->minus.suppressed_newline) {
- if (line[0] != '+')
- putc('\n', diff_words->file);
- diff_words->minus.suppressed_newline = 0;
- }
+ out->size = 0;
+ out->ptr = NULL;
- len--;
- switch (line[0]) {
- case '-':
- print_word(diff_words->file,
- &diff_words->minus, len, DIFF_FILE_OLD, 1);
- break;
- case '+':
- print_word(diff_words->file,
- &diff_words->plus, len, DIFF_FILE_NEW, 0);
- break;
- case ' ':
- print_word(diff_words->file,
- &diff_words->plus, len, DIFF_PLAIN, 0);
- diff_words->minus.current += len;
- break;
+ /* fake an empty "0th" word */
+ ALLOC_GROW(buffer->orig, 1, buffer->orig_alloc);
+ buffer->orig[0].begin = buffer->orig[0].end = buffer->text.ptr;
+ buffer->orig_nr = 1;
+
+ for (i = 0; i < buffer->text.size; i++) {
+ if (find_word_boundaries(&buffer->text, word_regex, &i, &j))
+ return;
+
+ /* store original boundaries */
+ ALLOC_GROW(buffer->orig, buffer->orig_nr + 1,
+ buffer->orig_alloc);
+ buffer->orig[buffer->orig_nr].begin = buffer->text.ptr + i;
+ buffer->orig[buffer->orig_nr].end = buffer->text.ptr + j;
+ buffer->orig_nr++;
+
+ /* store one word */
+ ALLOC_GROW(out->ptr, out->size + j - i + 1, alloc);
+ memcpy(out->ptr + out->size, buffer->text.ptr + i, j - i);
+ out->ptr[out->size + j - i] = '\n';
+ out->size += j - i + 1;
+
+ i = j - 1;
}
}
{
xpparam_t xpp;
xdemitconf_t xecfg;
- xdemitcb_t ecb;
mmfile_t minus, plus;
- int i;
+ struct diff_words_style *style = diff_words->style;
- memset(&xecfg, 0, sizeof(xecfg));
- minus.size = diff_words->minus.text.size;
- minus.ptr = xmalloc(minus.size);
- memcpy(minus.ptr, diff_words->minus.text.ptr, minus.size);
- for (i = 0; i < minus.size; i++)
- if (isspace(minus.ptr[i]))
- minus.ptr[i] = '\n';
- diff_words->minus.current = 0;
-
- plus.size = diff_words->plus.text.size;
- plus.ptr = xmalloc(plus.size);
- memcpy(plus.ptr, diff_words->plus.text.ptr, plus.size);
- for (i = 0; i < plus.size; i++)
- if (isspace(plus.ptr[i]))
- plus.ptr[i] = '\n';
- diff_words->plus.current = 0;
-
- xpp.flags = XDF_NEED_MINIMAL;
- xecfg.ctxlen = diff_words->minus.alloc + diff_words->plus.alloc;
- ecb.outf = xdiff_outf;
- ecb.priv = diff_words;
- diff_words->xm.consume = fn_out_diff_words_aux;
- xdi_diff(&minus, &plus, &xpp, &xecfg, &ecb);
+ struct diff_options *opt = diff_words->opt;
+ struct strbuf *msgbuf;
+ char *line_prefix = "";
+
+ assert(opt);
+ if (opt->output_prefix) {
+ msgbuf = opt->output_prefix(opt, opt->output_prefix_data);
+ line_prefix = msgbuf->buf;
+ }
+
+ /* special case: only removal */
+ if (!diff_words->plus.text.size) {
+ fputs(line_prefix, diff_words->opt->file);
+ fn_out_diff_words_write_helper(diff_words->opt->file,
+ &style->old, style->newline,
+ diff_words->minus.text.size,
+ diff_words->minus.text.ptr, line_prefix);
+ diff_words->minus.text.size = 0;
+ return;
+ }
+ diff_words->current_plus = diff_words->plus.text.ptr;
+ diff_words->last_minus = 0;
+
+ memset(&xpp, 0, sizeof(xpp));
+ memset(&xecfg, 0, sizeof(xecfg));
+ diff_words_fill(&diff_words->minus, &minus, diff_words->word_regex);
+ diff_words_fill(&diff_words->plus, &plus, diff_words->word_regex);
+ xpp.flags = 0;
+ /* as only the hunk header will be parsed, we need a 0-context */
+ xecfg.ctxlen = 0;
+ xdi_diff_outf(&minus, &plus, fn_out_diff_words_aux, diff_words,
+ &xpp, &xecfg);
free(minus.ptr);
free(plus.ptr);
- diff_words->minus.text.size = diff_words->plus.text.size = 0;
-
- if (diff_words->minus.suppressed_newline) {
- putc('\n', diff_words->file);
- diff_words->minus.suppressed_newline = 0;
+ if (diff_words->current_plus != diff_words->plus.text.ptr +
+ diff_words->plus.text.size) {
+ if (color_words_output_graph_prefix(diff_words))
+ fputs(line_prefix, diff_words->opt->file);
+ fn_out_diff_words_write_helper(diff_words->opt->file,
+ &style->ctx, style->newline,
+ diff_words->plus.text.ptr + diff_words->plus.text.size
+ - diff_words->current_plus, diff_words->current_plus,
+ line_prefix);
}
+ diff_words->minus.text.size = diff_words->plus.text.size = 0;
}
-typedef unsigned long (*sane_truncate_fn)(char *line, unsigned long len);
-
-struct emit_callback {
- struct xdiff_emit_state xm;
- int nparents, color_diff;
- unsigned ws_rule;
- sane_truncate_fn truncate;
- const char **label_path;
- struct diff_words_data *diff_words;
- int *found_changesp;
- FILE *file;
-};
+/* In "color-words" mode, show word-diff of words accumulated in the buffer */
+static void diff_words_flush(struct emit_callback *ecbdata)
+{
+ if (ecbdata->diff_words->minus.text.size ||
+ ecbdata->diff_words->plus.text.size)
+ diff_words_show(ecbdata->diff_words);
+}
static void free_diff_words_data(struct emit_callback *ecbdata)
{
if (ecbdata->diff_words) {
- /* flush buffers */
- if (ecbdata->diff_words->minus.text.size ||
- ecbdata->diff_words->plus.text.size)
- diff_words_show(ecbdata->diff_words);
-
+ diff_words_flush(ecbdata);
free (ecbdata->diff_words->minus.text.ptr);
+ free (ecbdata->diff_words->minus.orig);
free (ecbdata->diff_words->plus.text.ptr);
+ free (ecbdata->diff_words->plus.orig);
+ if (ecbdata->diff_words->word_regex) {
+ regfree(ecbdata->diff_words->word_regex);
+ free(ecbdata->diff_words->word_regex);
+ }
free(ecbdata->diff_words);
ecbdata->diff_words = NULL;
}
return "";
}
-static void emit_line(FILE *file, const char *set, const char *reset, const char *line, int len)
-{
- int has_trailing_newline = (len > 0 && line[len-1] == '\n');
- if (has_trailing_newline)
- len--;
-
- fputs(set, file);
- fwrite(line, len, 1, file);
- fputs(reset, file);
- if (has_trailing_newline)
- fputc('\n', file);
-}
-
-static void emit_add_line(const char *reset, struct emit_callback *ecbdata, const char *line, int len)
-{
- const char *ws = diff_get_color(ecbdata->color_diff, DIFF_WHITESPACE);
- const char *set = diff_get_color(ecbdata->color_diff, DIFF_FILE_NEW);
-
- if (!*ws)
- emit_line(ecbdata->file, set, reset, line, len);
- else {
- /* Emit just the prefix, then the rest. */
- emit_line(ecbdata->file, set, reset, line, ecbdata->nparents);
- ws_check_emit(line + ecbdata->nparents,
- len - ecbdata->nparents, ecbdata->ws_rule,
- ecbdata->file, set, reset, ws);
- }
-}
-
static unsigned long sane_truncate_line(struct emit_callback *ecb, char *line, unsigned long len)
{
const char *cp;
@@ -556,15 +1027,41 @@ static unsigned long sane_truncate_line(struct emit_callback *ecb, char *line, u
return allot - l;
}
+static void find_lno(const char *line, struct emit_callback *ecbdata)
+{
+ const char *p;
+ ecbdata->lno_in_preimage = 0;
+ ecbdata->lno_in_postimage = 0;
+ p = strchr(line, '-');
+ if (!p)
+ return; /* cannot happen */
+ ecbdata->lno_in_preimage = strtol(p + 1, NULL, 10);
+ p = strchr(p, '+');
+ if (!p)
+ return; /* cannot happen */
+ ecbdata->lno_in_postimage = strtol(p + 1, NULL, 10);
+}
+
static void fn_out_consume(void *priv, char *line, unsigned long len)
{
- int i;
- int color;
struct emit_callback *ecbdata = priv;
const char *meta = diff_get_color(ecbdata->color_diff, DIFF_METAINFO);
const char *plain = diff_get_color(ecbdata->color_diff, DIFF_PLAIN);
const char *reset = diff_get_color(ecbdata->color_diff, DIFF_RESET);
+ struct diff_options *o = ecbdata->opt;
+ char *line_prefix = "";
+ struct strbuf *msgbuf;
+ if (o && o->output_prefix) {
+ msgbuf = o->output_prefix(o, o->output_prefix_data);
+ line_prefix = msgbuf->buf;
+ }
+
+ if (ecbdata->header) {
+ fprintf(ecbdata->opt->file, "%s", ecbdata->header->buf);
+ strbuf_reset(ecbdata->header);
+ ecbdata->header = NULL;
+ }
*(ecbdata->found_changesp) = 1;
if (ecbdata->label_path[0]) {
name_a_tab = strchr(ecbdata->label_path[0], ' ') ? "\t" : "";
name_b_tab = strchr(ecbdata->label_path[1], ' ') ? "\t" : "";
- fprintf(ecbdata->file, "%s--- %s%s%s\n",
- meta, ecbdata->label_path[0], reset, name_a_tab);
- fprintf(ecbdata->file, "%s+++ %s%s%s\n",
- meta, ecbdata->label_path[1], reset, name_b_tab);
+ fprintf(ecbdata->opt->file, "%s%s--- %s%s%s\n",
+ line_prefix, meta, ecbdata->label_path[0], reset, name_a_tab);
+ fprintf(ecbdata->opt->file, "%s%s+++ %s%s%s\n",
+ line_prefix, meta, ecbdata->label_path[1], reset, name_b_tab);
ecbdata->label_path[0] = ecbdata->label_path[1] = NULL;
}
- /* This is not really necessary for now because
- * this codepath only deals with two-way diffs.
- */
- for (i = 0; i < len && line[i] == '@'; i++)
- ;
- if (2 <= i && i < len && line[i] == ' ') {
- ecbdata->nparents = i - 1;
+ if (diff_suppress_blank_empty
+ && len == 2 && line[0] == ' ' && line[1] == '\n') {
+ line[0] = '\n';
+ len = 1;
+ }
+
+ if (line[0] == '@') {
+ if (ecbdata->diff_words)
+ diff_words_flush(ecbdata);
len = sane_truncate_line(ecbdata, line, len);
- emit_line(ecbdata->file,
- diff_get_color(ecbdata->color_diff, DIFF_FRAGINFO),
- reset, line, len);
+ find_lno(line, ecbdata);
+ emit_hunk_header(ecbdata, line, len);
if (line[len-1] != '\n')
- putc('\n', ecbdata->file);
+ putc('\n', ecbdata->opt->file);
return;
}
- if (len < ecbdata->nparents) {
- emit_line(ecbdata->file, reset, reset, line, len);
+ if (len < 1) {
+ emit_line(ecbdata->opt, reset, reset, line, len);
+ if (ecbdata->diff_words
+ && ecbdata->diff_words->type == DIFF_WORDS_PORCELAIN)
+ fputs("~\n", ecbdata->opt->file);
return;
}
- color = DIFF_PLAIN;
- if (ecbdata->diff_words && ecbdata->nparents != 1)
- /* fall back to normal diff */
- free_diff_words_data(ecbdata);
if (ecbdata->diff_words) {
if (line[0] == '-') {
diff_words_append(line, len,
&ecbdata->diff_words->plus);
return;
}
- if (ecbdata->diff_words->minus.text.size ||
- ecbdata->diff_words->plus.text.size)
- diff_words_show(ecbdata->diff_words);
- line++;
- len--;
- emit_line(ecbdata->file, plain, reset, line, len);
+ diff_words_flush(ecbdata);
+ if (ecbdata->diff_words->type == DIFF_WORDS_PORCELAIN) {
+ emit_line(ecbdata->opt, plain, reset, line, len);
+ fputs("~\n", ecbdata->opt->file);
+ } else {
+ /*
+ * Skip the prefix character, if any. With
+ * diff_suppress_blank_empty, there may be
+ * none.
+ */
+ if (line[0] != '\n') {
+ line++;
+ len--;
+ }
+ emit_line(ecbdata->opt, plain, reset, line, len);
+ }
return;
}
- for (i = 0; i < ecbdata->nparents && len; i++) {
- if (line[i] == '-')
- color = DIFF_FILE_OLD;
- else if (line[i] == '+')
- color = DIFF_FILE_NEW;
- }
- if (color != DIFF_FILE_NEW) {
- emit_line(ecbdata->file,
- diff_get_color(ecbdata->color_diff, color),
- reset, line, len);
- return;
+ if (line[0] != '+') {
+ const char *color =
+ diff_get_color(ecbdata->color_diff,
+ line[0] == '-' ? DIFF_FILE_OLD : DIFF_PLAIN);
+ ecbdata->lno_in_preimage++;
+ if (line[0] == ' ')
+ ecbdata->lno_in_postimage++;
+ emit_line(ecbdata->opt, color, reset, line, len);
+ } else {
+ ecbdata->lno_in_postimage++;
+ emit_add_line(reset, ecbdata, line + 1, len - 1);
}
- emit_add_line(reset, ecbdata, line, len);
}
static char *pprint_rename(const char *a, const char *b)
{
const char *old = a;
const char *new = b;
- struct strbuf name;
+ struct strbuf name = STRBUF_INIT;
int pfx_length, sfx_length;
int len_a = strlen(a);
int len_b = strlen(b);
int qlen_a = quote_c_style(a, NULL, NULL, 0);
int qlen_b = quote_c_style(b, NULL, NULL, 0);
- strbuf_init(&name, 0);
if (qlen_a || qlen_b) {
quote_c_style(a, &name, NULL, 0);
strbuf_addstr(&name, " => ");
}
struct diffstat_t {
- struct xdiff_emit_state xm;
-
int nr;
int alloc;
struct diffstat_file {
unsigned is_unmerged:1;
unsigned is_binary:1;
unsigned is_renamed:1;
- unsigned int added, deleted;
+ uintmax_t added, deleted;
} **files;
};
}
static void show_name(FILE *file,
- const char *prefix, const char *name, int len,
- const char *reset, const char *set)
+ const char *prefix, const char *name, int len)
{
- fprintf(file, " %s%s%-*s%s |", set, prefix, len, name, reset);
+ fprintf(file, " %s%-*s |", prefix, len, name);
}
static void show_graph(FILE *file, char ch, int cnt, const char *set, const char *reset)
return;
if (!file->is_renamed) {
- struct strbuf buf;
- strbuf_init(&buf, 0);
+ struct strbuf buf = STRBUF_INIT;
if (quote_c_style(file->name, &buf, NULL, 0)) {
pname = strbuf_detach(&buf, NULL);
} else {
file->print_name = pname;
}
-static void show_stats(struct diffstat_t* data, struct diff_options *options)
+static void show_stats(struct diffstat_t *data, struct diff_options *options)
{
- int i, len, add, del, total, adds = 0, dels = 0;
- int max_change = 0, max_len = 0;
+ int i, len, add, del, adds = 0, dels = 0;
+ uintmax_t max_change = 0, max_len = 0;
int total_files = data->nr;
int width, name_width;
- const char *reset, *set, *add_c, *del_c;
+ const char *reset, *add_c, *del_c;
+ const char *line_prefix = "";
+ struct strbuf *msg = NULL;
if (data->nr == 0)
return;
+ if (options->output_prefix) {
+ msg = options->output_prefix(options, options->output_prefix_data);
+ line_prefix = msg->buf;
+ }
+
width = options->stat_width ? options->stat_width : 80;
name_width = options->stat_name_width ? options->stat_name_width : 50;
@@ -836,13 +1344,12 @@ static void show_stats(struct diffstat_t* data, struct diff_options *options)
/* Find the longest filename and max number of changes */
reset = diff_get_color_opt(options, DIFF_RESET);
- set = diff_get_color_opt(options, DIFF_PLAIN);
add_c = diff_get_color_opt(options, DIFF_FILE_NEW);
del_c = diff_get_color_opt(options, DIFF_FILE_OLD);
for (i = 0; i < data->nr; i++) {
struct diffstat_file *file = data->files[i];
- int change = file->added + file->deleted;
+ uintmax_t change = file->added + file->deleted;
fill_print_name(file);
len = strlen(file->print_name);
if (max_len < len)
for (i = 0; i < data->nr; i++) {
const char *prefix = "";
char *name = data->files[i]->print_name;
- int added = data->files[i]->added;
- int deleted = data->files[i]->deleted;
+ uintmax_t added = data->files[i]->added;
+ uintmax_t deleted = data->files[i]->deleted;
int name_len;
/*
@@ -890,17 +1397,21 @@ static void show_stats(struct diffstat_t* data, struct diff_options *options)
}
if (data->files[i]->is_binary) {
- show_name(options->file, prefix, name, len, reset, set);
+ fprintf(options->file, "%s", line_prefix);
+ show_name(options->file, prefix, name, len);
fprintf(options->file, " Bin ");
- fprintf(options->file, "%s%d%s", del_c, deleted, reset);
+ fprintf(options->file, "%s%"PRIuMAX"%s",
+ del_c, deleted, reset);
fprintf(options->file, " -> ");
- fprintf(options->file, "%s%d%s", add_c, added, reset);
+ fprintf(options->file, "%s%"PRIuMAX"%s",
+ add_c, added, reset);
fprintf(options->file, " bytes");
fprintf(options->file, "\n");
continue;
}
else if (data->files[i]->is_unmerged) {
- show_name(options->file, prefix, name, len, reset, set);
+ fprintf(options->file, "%s", line_prefix);
+ show_name(options->file, prefix, name, len);
fprintf(options->file, " Unmerged\n");
continue;
}
@@ -915,28 +1426,28 @@ static void show_stats(struct diffstat_t* data, struct diff_options *options)
*/
add = added;
del = deleted;
- total = add + del;
adds += add;
dels += del;
if (width <= max_change) {
add = scale_linear(add, width, max_change);
del = scale_linear(del, width, max_change);
- total = add + del;
}
- show_name(options->file, prefix, name, len, reset, set);
- fprintf(options->file, "%5d%s", added + deleted,
+ fprintf(options->file, "%s", line_prefix);
+ show_name(options->file, prefix, name, len);
+ fprintf(options->file, "%5"PRIuMAX"%s", added + deleted,
added + deleted ? " " : "");
show_graph(options->file, '+', add, add_c, reset);
show_graph(options->file, '-', del, del_c, reset);
fprintf(options->file, "\n");
}
+ fprintf(options->file, "%s", line_prefix);
fprintf(options->file,
- "%s %d files changed, %d insertions(+), %d deletions(-)%s\n",
- set, total_files, adds, dels, reset);
+ " %d files changed, %d insertions(+), %d deletions(-)\n",
+ total_files, adds, dels);
}
-static void show_shortstats(struct diffstat_t* data, struct diff_options *options)
+static void show_shortstats(struct diffstat_t *data, struct diff_options *options)
{
int i, adds = 0, dels = 0, total_files = data->nr;
@@ -957,11 +1468,17 @@ static void show_shortstats(struct diffstat_t* data, struct diff_options *option
}
}
}
+ if (options->output_prefix) {
+ struct strbuf *msg = NULL;
+ msg = options->output_prefix(options,
+ options->output_prefix_data);
+ fprintf(options->file, "%s", msg->buf);
+ }
fprintf(options->file, " %d files changed, %d insertions(+), %d deletions(-)\n",
total_files, adds, dels);
}
-static void show_numstat(struct diffstat_t* data, struct diff_options *options)
+static void show_numstat(struct diffstat_t *data, struct diff_options *options)
{
int i;
@@ -971,11 +1488,19 @@ static void show_numstat(struct diffstat_t* data, struct diff_options *options)
for (i = 0; i < data->nr; i++) {
struct diffstat_file *file = data->files[i];
+ if (options->output_prefix) {
+ struct strbuf *msg = NULL;
+ msg = options->output_prefix(options,
+ options->output_prefix_data);
+ fprintf(options->file, "%s", msg->buf);
+ }
+
if (file->is_binary)
fprintf(options->file, "-\t-\t");
else
fprintf(options->file,
- "%d\t%d\t", file->added, file->deleted);
+ "%"PRIuMAX"\t%"PRIuMAX"\t",
+ file->added, file->deleted);
if (options->line_termination) {
fill_print_name(file);
if (!file->is_renamed)
struct dirstat_dir {
struct dirstat_file *files;
- int alloc, nr, percent, cumulative;
+ int alloc, nr, permille, cumulative;
};
-static long gather_dirstat(FILE *file, struct dirstat_dir *dir, unsigned long changed, const char *base, int baselen)
+static long gather_dirstat(struct diff_options *opt, struct dirstat_dir *dir,
+ unsigned long changed, const char *base, int baselen)
{
unsigned long this_dir = 0;
unsigned int sources = 0;
+ const char *line_prefix = "";
+ struct strbuf *msg = NULL;
+
+ if (opt->output_prefix) {
+ msg = opt->output_prefix(opt, opt->output_prefix_data);
+ line_prefix = msg->buf;
+ }
while (dir->nr) {
struct dirstat_file *f = dir->files;
@@ -1023,7 +1556,7 @@ static long gather_dirstat(FILE *file, struct dirstat_dir *dir, unsigned long ch
slash = strchr(f->name + baselen, '/');
if (slash) {
int newbaselen = slash + 1 - f->name;
- this = gather_dirstat(file, dir, changed, f->name, newbaselen);
+ this = gather_dirstat(opt, dir, changed, f->name, newbaselen);
sources++;
} else {
this = f->changed;
@@ -1041,11 +1574,11 @@ static long gather_dirstat(FILE *file, struct dirstat_dir *dir, unsigned long ch
* under this directory (sources == 1).
*/
if (baselen && sources != 1) {
- int permille = this_dir * 1000 / changed;
- if (permille) {
- int percent = permille / 10;
- if (percent >= dir->percent) {
- fprintf(file, "%4d.%01d%% %.*s\n", percent, permille % 10, baselen, base);
+ if (this_dir) {
+ int permille = this_dir * 1000 / changed;
+ if (permille >= dir->permille) {
+ fprintf(opt->file, "%s%4d.%01d%% %.*s\n", line_prefix,
+ permille / 10, permille % 10, baselen, base);
if (!dir->cumulative)
return 0;
}
@@ -1054,6 +1587,13 @@ static long gather_dirstat(FILE *file, struct dirstat_dir *dir, unsigned long ch
return this_dir;
}
+static int dirstat_compare(const void *_a, const void *_b)
+{
+ const struct dirstat_file *a = _a;
+ const struct dirstat_file *b = _b;
+ return strcmp(a->name, b->name);
+}
+
static void show_dirstat(struct diff_options *options)
{
int i;
dir.files = NULL;
dir.alloc = 0;
dir.nr = 0;
- dir.percent = options->dirstat_percent;
- dir.cumulative = options->output_format & DIFF_FORMAT_CUMULATIVE;
+ dir.permille = options->dirstat_permille;
+ dir.cumulative = DIFF_OPT_TST(options, DIRSTAT_CUMULATIVE);
changed = 0;
for (i = 0; i < q->nr; i++) {
struct diff_filepair *p = q->queue[i];
const char *name;
unsigned long copied, added, damage;
+ int content_changed;
+
+ name = p->two->path ? p->two->path : p->one->path;
+
+ if (p->one->sha1_valid && p->two->sha1_valid)
+ content_changed = hashcmp(p->one->sha1, p->two->sha1);
+ else
+ content_changed = 1;
- name = p->one->path ? p->one->path : p->two->path;
+ if (!content_changed) {
+ /*
+ * The SHA1 has not changed, so pre-/post-content is
+ * identical. We can therefore skip looking at the
+ * file contents altogether.
+ */
+ damage = 0;
+ goto found_damage;
+ }
+
+ if (DIFF_OPT_TST(options, DIRSTAT_BY_FILE)) {
+ /*
+ * In --dirstat-by-file mode, we don't really need to
+ * look at the actual file contents at all.
+ * The fact that the SHA1 changed is enough for us to
+ * add this file to the list of results
+ * (with each file contributing equal damage).
+ */
+ damage = 1;
+ goto found_damage;
+ }
if (DIFF_FILE_VALID(p->one) && DIFF_FILE_VALID(p->two)) {
diff_populate_filespec(p->one, 0);
* Original minus copied is the removed material,
* added is the new material. They are both damages
* made to the preimage.
+ * If the resulting damage is zero, we know that
+ * diffcore_count_changes() considers the two entries to
+ * be identical, but since content_changed is true, we
+ * know that there must have been _some_ kind of change,
+ * so we force all entries to have damage > 0.
*/
damage = (p->one->size - copied) + added;
+ if (!damage)
+ damage = 1;
+found_damage:
ALLOC_GROW(dir.files, dir.nr + 1, dir.alloc);
dir.files[dir.nr].name = name;
dir.files[dir.nr].changed = damage;
return;
/* Show all directories with more than x% of the changes */
- gather_dirstat(options->file, &dir, changed, "", 0);
+ qsort(dir.files, dir.nr, sizeof(dir.files[0]), dirstat_compare);
+ gather_dirstat(options, &dir, changed, "", 0);
+}
+
+static void show_dirstat_by_line(struct diffstat_t *data, struct diff_options *options)
+{
+ int i;
+ unsigned long changed;
+ struct dirstat_dir dir;
+
+ if (data->nr == 0)
+ return;
+
+ dir.files = NULL;
+ dir.alloc = 0;
+ dir.nr = 0;
+ dir.permille = options->dirstat_permille;
+ dir.cumulative = DIFF_OPT_TST(options, DIRSTAT_CUMULATIVE);
+
+ changed = 0;
+ for (i = 0; i < data->nr; i++) {
+ struct diffstat_file *file = data->files[i];
+ unsigned long damage = file->added + file->deleted;
+ if (file->is_binary)
+ /*
+ * binary files counts bytes, not lines. Must find some
+ * way to normalize binary bytes vs. textual lines.
+ * The following heuristic assumes that there are 64
+ * bytes per "line".
+ * This is stupid and ugly, but very cheap...
+ */
+ damage = (damage + 63) / 64;
+ ALLOC_GROW(dir.files, dir.nr + 1, dir.alloc);
+ dir.files[dir.nr].name = file->name;
+ dir.files[dir.nr].changed = damage;
+ changed += damage;
+ dir.nr++;
+ }
+
+ /* This can happen even with many files, if everything was renames */
+ if (!changed)
+ return;
+
+ /* Show all directories with more than x% of the changes */
+ qsort(dir.files, dir.nr, sizeof(dir.files[0]), dirstat_compare);
+ gather_dirstat(options, &dir, changed, "", 0);
}
static void free_diffstat_info(struct diffstat_t *diffstat)
}
struct checkdiff_t {
- struct xdiff_emit_state xm;
const char *filename;
int lineno;
+ int conflict_marker_size;
struct diff_options *o;
unsigned ws_rule;
unsigned status;
- int trailing_blanks_start;
};
-static int is_conflict_marker(const char *line, unsigned long len)
+static int is_conflict_marker(const char *line, int marker_size, unsigned long len)
{
char firstchar;
int cnt;
- if (len < 8)
+ if (len < marker_size + 1)
return 0;
firstchar = line[0];
switch (firstchar) {
- case '=': case '>': case '<':
+ case '=': case '>': case '<': case '|':
break;
default:
return 0;
}
- for (cnt = 1; cnt < 7; cnt++)
+ for (cnt = 1; cnt < marker_size; cnt++)
if (line[cnt] != firstchar)
return 0;
- /* line[0] thru line[6] are same as firstchar */
- if (firstchar == '=') {
- /* divider between ours and theirs? */
- if (len != 8 || line[7] != '\n')
- return 0;
- } else if (len < 8 || !isspace(line[7])) {
- /* not divider before ours nor after theirs */
+ /* line[1] thru line[marker_size-1] are same as firstchar */
+ if (len < marker_size + 1 || !isspace(line[marker_size]))
return 0;
- }
return 1;
}
{
struct checkdiff_t *data = priv;
int color_diff = DIFF_OPT_TST(data->o, COLOR_DIFF);
+ int marker_size = data->conflict_marker_size;
const char *ws = diff_get_color(color_diff, DIFF_WHITESPACE);
const char *reset = diff_get_color(color_diff, DIFF_RESET);
const char *set = diff_get_color(color_diff, DIFF_FILE_NEW);
char *err;
+ char *line_prefix = "";
+ struct strbuf *msgbuf;
+
+ assert(data->o);
+ if (data->o->output_prefix) {
+ msgbuf = data->o->output_prefix(data->o,
+ data->o->output_prefix_data);
+ line_prefix = msgbuf->buf;
+ }
if (line[0] == '+') {
unsigned bad;
data->lineno++;
- if (!ws_blank_line(line + 1, len - 1, data->ws_rule))
- data->trailing_blanks_start = 0;
- else if (!data->trailing_blanks_start)
- data->trailing_blanks_start = data->lineno;
- if (is_conflict_marker(line + 1, len - 1)) {
+ if (is_conflict_marker(line + 1, marker_size, len - 1)) {
data->status |= 1;
fprintf(data->o->file,
- "%s:%d: leftover conflict marker\n",
- data->filename, data->lineno);
+ "%s%s:%d: leftover conflict marker\n",
+ line_prefix, data->filename, data->lineno);
}
bad = ws_check(line + 1, len - 1, data->ws_rule);
if (!bad)
return;
data->status |= bad;
err = whitespace_error_string(bad);
- fprintf(data->o->file, "%s:%d: %s.\n",
- data->filename, data->lineno, err);
+ fprintf(data->o->file, "%s%s:%d: %s.\n",
+ line_prefix, data->filename, data->lineno, err);
free(err);
- emit_line(data->o->file, set, reset, line, 1);
+ emit_line(data->o, set, reset, line, 1);
ws_check_emit(line + 1, len - 1, data->ws_rule,
data->o->file, set, reset, ws);
} else if (line[0] == ' ') {
data->lineno++;
- data->trailing_blanks_start = 0;
} else if (line[0] == '@') {
char *plus = strchr(line, '+');
if (plus)
data->lineno = strtol(plus, NULL, 10) - 1;
else
die("invalid diff");
- data->trailing_blanks_start = 0;
}
}
{
int bound;
unsigned char *deflated;
- z_stream stream;
+ git_zstream stream;
memset(&stream, 0, sizeof(stream));
- deflateInit(&stream, zlib_compression_level);
- bound = deflateBound(&stream, size);
+ git_deflate_init(&stream, zlib_compression_level);
+ bound = git_deflate_bound(&stream, size);
deflated = xmalloc(bound);
stream.next_out = deflated;
stream.avail_out = bound;
stream.next_in = (unsigned char *)data;
stream.avail_in = size;
- while (deflate(&stream, Z_FINISH) == Z_OK)
+ while (git_deflate(&stream, Z_FINISH) == Z_OK)
; /* nothing */
- deflateEnd(&stream);
+ git_deflate_end(&stream);
*result_size = stream.total_out;
return deflated;
}
-static void emit_binary_diff_body(FILE *file, mmfile_t *one, mmfile_t *two)
+static void emit_binary_diff_body(FILE *file, mmfile_t *one, mmfile_t *two, char *prefix)
{
void *cp;
void *delta;
}
if (delta && delta_size < deflate_size) {
- fprintf(file, "delta %lu\n", orig_size);
+ fprintf(file, "%sdelta %lu\n", prefix, orig_size);
free(deflated);
data = delta;
data_size = delta_size;
}
else {
- fprintf(file, "literal %lu\n", two->size);
+ fprintf(file, "%sliteral %lu\n", prefix, two->size);
free(delta);
data = deflated;
data_size = deflate_size;
@@ -1292,136 +1910,81 @@ static void emit_binary_diff_body(FILE *file, mmfile_t *one, mmfile_t *two)
line[0] = bytes - 26 + 'a' - 1;
encode_85(line + 1, cp, bytes);
cp = (char *) cp + bytes;
+ fprintf(file, "%s", prefix);
fputs(line, file);
fputc('\n', file);
}
- fprintf(file, "\n");
+ fprintf(file, "%s\n", prefix);
free(data);
}
-static void emit_binary_diff(FILE *file, mmfile_t *one, mmfile_t *two)
+static void emit_binary_diff(FILE *file, mmfile_t *one, mmfile_t *two, char *prefix)
{
- fprintf(file, "GIT binary patch\n");
- emit_binary_diff_body(file, one, two);
- emit_binary_diff_body(file, two, one);
-}
-
-static void setup_diff_attr_check(struct git_attr_check *check)
-{
- static struct git_attr *attr_diff;
-
- if (!attr_diff) {
- attr_diff = git_attr("diff", 4);
- }
- check[0].attr = attr_diff;
+ fprintf(file, "%sGIT binary patch\n", prefix);
+ emit_binary_diff_body(file, one, two, prefix);
+ emit_binary_diff_body(file, two, one, prefix);
}
-static void diff_filespec_check_attr(struct diff_filespec *one)
+static void diff_filespec_load_driver(struct diff_filespec *one)
{
- struct git_attr_check attr_diff_check;
- int check_from_data = 0;
-
- if (one->checked_attr)
+ /* Use already-loaded driver */
+ if (one->driver)
return;
- setup_diff_attr_check(&attr_diff_check);
- one->is_binary = 0;
- one->funcname_pattern_ident = NULL;
-
- if (!git_checkattr(one->path, 1, &attr_diff_check)) {
- const char *value;
-
- /* binaryness */
- value = attr_diff_check.value;
- if (ATTR_TRUE(value))
- ;
- else if (ATTR_FALSE(value))
- one->is_binary = 1;
- else
- check_from_data = 1;
+ if (S_ISREG(one->mode))
+ one->driver = userdiff_find_by_path(one->path);
- /* funcname pattern ident */
- if (ATTR_TRUE(value) || ATTR_FALSE(value) || ATTR_UNSET(value))
- ;
- else
- one->funcname_pattern_ident = value;
- }
-
- if (check_from_data) {
- if (!one->data && DIFF_FILE_VALID(one))
- diff_populate_filespec(one, 0);
-
- if (one->data)
- one->is_binary = buffer_is_binary(one->data, one->size);
- }
+ /* Fallback to default settings */
+ if (!one->driver)
+ one->driver = userdiff_find_by_name("default");
}
int diff_filespec_is_binary(struct diff_filespec *one)
{
- diff_filespec_check_attr(one);
+ if (one->is_binary == -1) {
+ diff_filespec_load_driver(one);
+ if (one->driver->binary != -1)
+ one->is_binary = one->driver->binary;
+ else {
+ if (!one->data && DIFF_FILE_VALID(one))
+ diff_populate_filespec(one, 0);
+ if (one->data)
+ one->is_binary = buffer_is_binary(one->data,
+ one->size);
+ if (one->is_binary == -1)
+ one->is_binary = 0;
+ }
+ }
return one->is_binary;
}
-static const char *funcname_pattern(const char *ident)
+static const struct userdiff_funcname *diff_funcname_pattern(struct diff_filespec *one)
{
- struct funcname_pattern *pp;
-
- for (pp = funcname_pattern_list; pp; pp = pp->next)
- if (!strcmp(ident, pp->name))
- return pp->pattern;
- return NULL;
+ diff_filespec_load_driver(one);
+ return one->driver->funcname.pattern ? &one->driver->funcname : NULL;
}
-static struct builtin_funcname_pattern {
- const char *name;
- const char *pattern;
-} builtin_funcname_pattern[] = {
- { "java", "!^[ ]*\\(catch\\|do\\|for\\|if\\|instanceof\\|"
- "new\\|return\\|switch\\|throw\\|while\\)\n"
- "^[ ]*\\(\\([ ]*"
- "[A-Za-z_][A-Za-z_0-9]*\\)\\{2,\\}"
- "[ ]*([^;]*\\)$" },
- { "pascal", "^\\(\\(procedure\\|function\\|constructor\\|"
- "destructor\\|interface\\|implementation\\|"
- "initialization\\|finalization\\)[ \t]*.*\\)$"
- "\\|"
- "^\\(.*=[ \t]*\\(class\\|record\\).*\\)$"
- },
- { "bibtex", "\\(@[a-zA-Z]\\{1,\\}[ \t]*{\\{0,1\\}[ \t]*[^ \t\"@',\\#}{~%]*\\).*$" },
- { "tex", "^\\(\\\\\\(\\(sub\\)*section\\|chapter\\|part\\)\\*\\{0,1\\}{.*\\)$" },
- { "ruby", "^\\s*\\(\\(class\\|module\\|def\\)\\s.*\\)$" },
-};
-
-static const char *diff_funcname_pattern(struct diff_filespec *one)
+static const char *userdiff_word_regex(struct diff_filespec *one)
{
- const char *ident, *pattern;
- int i;
-
- diff_filespec_check_attr(one);
- ident = one->funcname_pattern_ident;
-
- if (!ident)
- /*
- * If the config file has "funcname.default" defined, that
- * regexp is used; otherwise NULL is returned and xemit uses
- * the built-in default.
- */
- return funcname_pattern("default");
+ diff_filespec_load_driver(one);
+ return one->driver->word_regex;
+}
- /* Look up custom "funcname.$ident" regexp from config. */
- pattern = funcname_pattern(ident);
- if (pattern)
- return pattern;
+void diff_set_mnemonic_prefix(struct diff_options *options, const char *a, const char *b)
+{
+ if (!options->a_prefix)
+ options->a_prefix = a;
+ if (!options->b_prefix)
+ options->b_prefix = b;
+}
- /*
- * And define built-in fallback patterns here. Note that
- * these can be overridden by the user's config settings.
- */
- for (i = 0; i < ARRAY_SIZE(builtin_funcname_pattern); i++)
- if (!strcmp(ident, builtin_funcname_pattern[i].name))
- return builtin_funcname_pattern[i].pattern;
+struct userdiff_driver *get_textconv(struct diff_filespec *one)
+{
+ if (!DIFF_FILE_VALID(one))
+ return NULL;
- return NULL;
+ diff_filespec_load_driver(one);
+ return userdiff_get_textconv(one->driver);
}
static void builtin_diff(const char *name_a,
struct diff_filespec *one,
struct diff_filespec *two,
const char *xfrm_msg,
+ int must_show_header,
struct diff_options *o,
int complete_rewrite)
{
char *a_one, *b_two;
const char *set = diff_get_color_opt(o, DIFF_METAINFO);
const char *reset = diff_get_color_opt(o, DIFF_RESET);
+ const char *a_prefix, *b_prefix;
+ struct userdiff_driver *textconv_one = NULL;
+ struct userdiff_driver *textconv_two = NULL;
+ struct strbuf header = STRBUF_INIT;
+ struct strbuf *msgbuf;
+ char *line_prefix = "";
+
+ if (o->output_prefix) {
+ msgbuf = o->output_prefix(o, o->output_prefix_data);
+ line_prefix = msgbuf->buf;
+ }
+
+ if (DIFF_OPT_TST(o, SUBMODULE_LOG) &&
+ (!one->mode || S_ISGITLINK(one->mode)) &&
+ (!two->mode || S_ISGITLINK(two->mode))) {
+ const char *del = diff_get_color_opt(o, DIFF_FILE_OLD);
+ const char *add = diff_get_color_opt(o, DIFF_FILE_NEW);
+ show_submodule_summary(o->file, one ? one->path : two->path,
+ one->sha1, two->sha1, two->dirty_submodule,
+ del, add, reset);
+ return;
+ }
+
+ if (DIFF_OPT_TST(o, ALLOW_TEXTCONV)) {
+ textconv_one = get_textconv(one);
+ textconv_two = get_textconv(two);
+ }
- a_one = quote_two(o->a_prefix, name_a + (*name_a == '/'));
- b_two = quote_two(o->b_prefix, name_b + (*name_b == '/'));
+ diff_set_mnemonic_prefix(o, "a/", "b/");
+ if (DIFF_OPT_TST(o, REVERSE_DIFF)) {
+ a_prefix = o->b_prefix;
+ b_prefix = o->a_prefix;
+ } else {
+ a_prefix = o->a_prefix;
+ b_prefix = o->b_prefix;
+ }
+
+ /* Never use a non-valid filename anywhere if at all possible */
+ name_a = DIFF_FILE_VALID(one) ? name_a : name_b;
+ name_b = DIFF_FILE_VALID(two) ? name_b : name_a;
+
+ a_one = quote_two(a_prefix, name_a + (*name_a == '/'));
+ b_two = quote_two(b_prefix, name_b + (*name_b == '/'));
lbl[0] = DIFF_FILE_VALID(one) ? a_one : "/dev/null";
lbl[1] = DIFF_FILE_VALID(two) ? b_two : "/dev/null";
- fprintf(o->file, "%sdiff --git %s %s%s\n", set, a_one, b_two, reset);
+ strbuf_addf(&header, "%s%sdiff --git %s %s%s\n", line_prefix, set, a_one, b_two, reset);
if (lbl[0][0] == '/') {
/* /dev/null */
- fprintf(o->file, "%snew file mode %06o%s\n", set, two->mode, reset);
- if (xfrm_msg && xfrm_msg[0])
- fprintf(o->file, "%s%s%s\n", set, xfrm_msg, reset);
+ strbuf_addf(&header, "%s%snew file mode %06o%s\n", line_prefix, set, two->mode, reset);
+ if (xfrm_msg)
+ strbuf_addstr(&header, xfrm_msg);
+ must_show_header = 1;
}
else if (lbl[1][0] == '/') {
- fprintf(o->file, "%sdeleted file mode %06o%s\n", set, one->mode, reset);
- if (xfrm_msg && xfrm_msg[0])
- fprintf(o->file, "%s%s%s\n", set, xfrm_msg, reset);
+ strbuf_addf(&header, "%s%sdeleted file mode %06o%s\n", line_prefix, set, one->mode, reset);
+ if (xfrm_msg)
+ strbuf_addstr(&header, xfrm_msg);
+ must_show_header = 1;
}
else {
if (one->mode != two->mode) {
- fprintf(o->file, "%sold mode %06o%s\n", set, one->mode, reset);
- fprintf(o->file, "%snew mode %06o%s\n", set, two->mode, reset);
+ strbuf_addf(&header, "%s%sold mode %06o%s\n", line_prefix, set, one->mode, reset);
+ strbuf_addf(&header, "%s%snew mode %06o%s\n", line_prefix, set, two->mode, reset);
+ must_show_header = 1;
}
- if (xfrm_msg && xfrm_msg[0])
- fprintf(o->file, "%s%s%s\n", set, xfrm_msg, reset);
+ if (xfrm_msg)
+ strbuf_addstr(&header, xfrm_msg);
+
/*
* we do not run diff between different kind
* of objects.
*/
if ((one->mode ^ two->mode) & S_IFMT)
goto free_ab_and_return;
- if (complete_rewrite) {
- emit_rewrite_diff(name_a, name_b, one, two, o);
+ if (complete_rewrite &&
+ (textconv_one || !diff_filespec_is_binary(one)) &&
+ (textconv_two || !diff_filespec_is_binary(two))) {
+ fprintf(o->file, "%s", header.buf);
+ strbuf_reset(&header);
+ emit_rewrite_diff(name_a, name_b, one, two,
+ textconv_one, textconv_two, o);
o->found_changes = 1;
goto free_ab_and_return;
}
}
- if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0)
- die("unable to read files to diff");
-
- if (!DIFF_OPT_TST(o, TEXT) &&
- (diff_filespec_is_binary(one) || diff_filespec_is_binary(two))) {
+ if (o->irreversible_delete && lbl[1][0] == '/') {
+ fprintf(o->file, "%s", header.buf);
+ strbuf_reset(&header);
+ goto free_ab_and_return;
+ } else if (!DIFF_OPT_TST(o, TEXT) &&
+ ( (!textconv_one && diff_filespec_is_binary(one)) ||
+ (!textconv_two && diff_filespec_is_binary(two)) )) {
+ if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0)
+ die("unable to read files to diff");
/* Quite common confusing case */
if (mf1.size == mf2.size &&
- !memcmp(mf1.ptr, mf2.ptr, mf1.size))
+ !memcmp(mf1.ptr, mf2.ptr, mf1.size)) {
+ if (must_show_header)
+ fprintf(o->file, "%s", header.buf);
goto free_ab_and_return;
+ }
+ fprintf(o->file, "%s", header.buf);
+ strbuf_reset(&header);
if (DIFF_OPT_TST(o, BINARY))
- emit_binary_diff(o->file, &mf1, &mf2);
+ emit_binary_diff(o->file, &mf1, &mf2, line_prefix);
else
- fprintf(o->file, "Binary files %s and %s differ\n",
- lbl[0], lbl[1]);
+ fprintf(o->file, "%sBinary files %s and %s differ\n",
+ line_prefix, lbl[0], lbl[1]);
o->found_changes = 1;
- }
- else {
+ } else {
/* Crazy xdl interfaces.. */
const char *diffopts = getenv("GIT_DIFF_OPTS");
xpparam_t xpp;
xdemitconf_t xecfg;
- xdemitcb_t ecb;
struct emit_callback ecbdata;
- const char *funcname_pattern;
+ const struct userdiff_funcname *pe;
- funcname_pattern = diff_funcname_pattern(one);
- if (!funcname_pattern)
- funcname_pattern = diff_funcname_pattern(two);
+ if (!DIFF_XDL_TST(o, WHITESPACE_FLAGS) || must_show_header) {
+ fprintf(o->file, "%s", header.buf);
+ strbuf_reset(&header);
+ }
+
+ mf1.size = fill_textconv(textconv_one, one, &mf1.ptr);
+ mf2.size = fill_textconv(textconv_two, two, &mf2.ptr);
+ pe = diff_funcname_pattern(one);
+ if (!pe)
+ pe = diff_funcname_pattern(two);
+
+ memset(&xpp, 0, sizeof(xpp));
memset(&xecfg, 0, sizeof(xecfg));
memset(&ecbdata, 0, sizeof(ecbdata));
ecbdata.label_path = lbl;
ecbdata.color_diff = DIFF_OPT_TST(o, COLOR_DIFF);
ecbdata.found_changesp = &o->found_changes;
ecbdata.ws_rule = whitespace_rule(name_b ? name_b : name_a);
- ecbdata.file = o->file;
- xpp.flags = XDF_NEED_MINIMAL | o->xdl_opts;
+ if (ecbdata.ws_rule & WS_BLANK_AT_EOF)
+ check_blank_at_eof(&mf1, &mf2, &ecbdata);
+ ecbdata.opt = o;
+ ecbdata.header = header.len ? &header : NULL;
+ xpp.flags = o->xdl_opts;
xecfg.ctxlen = o->context;
+ xecfg.interhunkctxlen = o->interhunkcontext;
xecfg.flags = XDL_EMIT_FUNCNAMES;
- if (funcname_pattern)
- xdiff_set_find_func(&xecfg, funcname_pattern);
+ if (pe)
+ xdiff_set_find_func(&xecfg, pe->pattern, pe->cflags);
if (!diffopts)
;
else if (!prefixcmp(diffopts, "--unified="))
xecfg.ctxlen = strtoul(diffopts + 10, NULL, 10);
else if (!prefixcmp(diffopts, "-u"))
xecfg.ctxlen = strtoul(diffopts + 2, NULL, 10);
- ecb.outf = xdiff_outf;
- ecb.priv = &ecbdata;
- ecbdata.xm.consume = fn_out_consume;
- if (DIFF_OPT_TST(o, COLOR_DIFF_WORDS)) {
+ if (o->word_diff) {
+ int i;
+
ecbdata.diff_words =
xcalloc(1, sizeof(struct diff_words_data));
- ecbdata.diff_words->file = o->file;
+ ecbdata.diff_words->type = o->word_diff;
+ ecbdata.diff_words->opt = o;
+ if (!o->word_regex)
+ o->word_regex = userdiff_word_regex(one);
+ if (!o->word_regex)
+ o->word_regex = userdiff_word_regex(two);
+ if (!o->word_regex)
+ o->word_regex = diff_word_regex_cfg;
+ if (o->word_regex) {
+ ecbdata.diff_words->word_regex = (regex_t *)
+ xmalloc(sizeof(regex_t));
+ if (regcomp(ecbdata.diff_words->word_regex,
+ o->word_regex,
+ REG_EXTENDED | REG_NEWLINE))
+ die ("Invalid regular expression: %s",
+ o->word_regex);
+ }
+ for (i = 0; i < ARRAY_SIZE(diff_words_styles); i++) {
+ if (o->word_diff == diff_words_styles[i].type) {
+ ecbdata.diff_words->style =
+ &diff_words_styles[i];
+ break;
+ }
+ }
+ if (DIFF_OPT_TST(o, COLOR_DIFF)) {
+ struct diff_words_style *st = ecbdata.diff_words->style;
+ st->old.color = diff_get_color_opt(o, DIFF_FILE_OLD);
+ st->new.color = diff_get_color_opt(o, DIFF_FILE_NEW);
+ st->ctx.color = diff_get_color_opt(o, DIFF_PLAIN);
+ }
}
- xdi_diff(&mf1, &mf2, &xpp, &xecfg, &ecb);
- if (DIFF_OPT_TST(o, COLOR_DIFF_WORDS))
+ xdi_diff_outf(&mf1, &mf2, fn_out_consume, &ecbdata,
+ &xpp, &xecfg);
+ if (o->word_diff)
free_diff_words_data(&ecbdata);
+ if (textconv_one)
+ free(mf1.ptr);
+ if (textconv_two)
+ free(mf2.ptr);
+ xdiff_clear_find_func(&xecfg);
}
free_ab_and_return:
+ strbuf_release(&header);
diff_free_filespec_data(one);
diff_free_filespec_data(two);
free(a_one);
data->is_unmerged = 1;
return;
}
- if (complete_rewrite) {
+
+ if (diff_filespec_is_binary(one) || diff_filespec_is_binary(two)) {
+ data->is_binary = 1;
+ data->added = diff_filespec_size(two);
+ data->deleted = diff_filespec_size(one);
+ }
+
+ else if (complete_rewrite) {
diff_populate_filespec(one, 0);
diff_populate_filespec(two, 0);
data->deleted = count_lines(one->data, one->size);
data->added = count_lines(two->data, two->size);
- goto free_and_return;
}
- if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0)
- die("unable to read files to diff");
- if (diff_filespec_is_binary(one) || diff_filespec_is_binary(two)) {
- data->is_binary = 1;
- data->added = mf2.size;
- data->deleted = mf1.size;
- } else {
+ else {
/* Crazy xdl interfaces.. */
xpparam_t xpp;
xdemitconf_t xecfg;
- xdemitcb_t ecb;
+ if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0)
+ die("unable to read files to diff");
+
+ memset(&xpp, 0, sizeof(xpp));
memset(&xecfg, 0, sizeof(xecfg));
- xpp.flags = XDF_NEED_MINIMAL | o->xdl_opts;
- ecb.outf = xdiff_outf;
- ecb.priv = diffstat;
- xdi_diff(&mf1, &mf2, &xpp, &xecfg, &ecb);
+ xpp.flags = o->xdl_opts;
+ xdi_diff_outf(&mf1, &mf2, diffstat_consume, diffstat,
+ &xpp, &xecfg);
}
- free_and_return:
diff_free_filespec_data(one);
diff_free_filespec_data(two);
}
return;
memset(&data, 0, sizeof(data));
- data.xm.consume = checkdiff_consume;
data.filename = name_b ? name_b : name_a;
data.lineno = 0;
data.o = o;
data.ws_rule = whitespace_rule(attr_path);
+ data.conflict_marker_size = ll_merge_marker_size(attr_path);
if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0)
die("unable to read files to diff");
/* Crazy xdl interfaces.. */
xpparam_t xpp;
xdemitconf_t xecfg;
- xdemitcb_t ecb;
+ memset(&xpp, 0, sizeof(xpp));
memset(&xecfg, 0, sizeof(xecfg));
- xpp.flags = XDF_NEED_MINIMAL;
- ecb.outf = xdiff_outf;
- ecb.priv = &data;
- xdi_diff(&mf1, &mf2, &xpp, &xecfg, &ecb);
-
- if ((data.ws_rule & WS_TRAILING_SPACE) &&
- data.trailing_blanks_start) {
- fprintf(o->file, "%s:%d: ends with blank lines.\n",
- data.filename, data.trailing_blanks_start);
- data.status = 1; /* report errors */
+ xecfg.ctxlen = 1; /* at least one context line */
+ xpp.flags = 0;
+ xdi_diff_outf(&mf1, &mf2, checkdiff_consume, &data,
+ &xpp, &xecfg);
+
+ if (data.ws_rule & WS_BLANK_AT_EOF) {
+ struct emit_callback ecbdata;
+ int blank_at_eof;
+
+ ecbdata.ws_rule = data.ws_rule;
+ check_blank_at_eof(&mf1, &mf2, &ecbdata);
+ blank_at_eof = ecbdata.blank_at_eof_in_postimage;
+
+ if (blank_at_eof) {
+ static char *err;
+ if (!err)
+ err = whitespace_error_string(WS_BLANK_AT_EOF);
+ fprintf(o->file, "%s:%d: %s.\n",
+ data.filename, blank_at_eof, err);
+ data.status = 1; /* report errors */
+ }
}
}
free_and_return:
spec->path = (char *)(spec + 1);
memcpy(spec->path, path, namelen+1);
spec->count = 1;
+ spec->is_binary = -1;
return spec;
}
@@ -1687,7 +2368,8 @@ static int reuse_worktree_file(const char *name, const unsigned char *sha1, int
struct stat st;
int pos, len;
- /* We do not read the cache ourselves here, because the
+ /*
+ * We do not read the cache ourselves here, because the
* benchmark with my previous version that always reads cache
* shows that it makes things worse for diff-tree comparing
* two linux-2.6 kernel trees in an already checked out work
@@ -1711,7 +2393,7 @@ static int reuse_worktree_file(const char *name, const unsigned char *sha1, int
* objects however would tend to be slower as they need
* to be individually opened and inflated.
*/
- if (!FAST_WORKING_DIRECTORY && !want_file && has_sha1_pack(sha1, NULL))
+ if (!FAST_WORKING_DIRECTORY && !want_file && has_sha1_pack(sha1))
return 0;
len = strlen(name);
@@ -1727,6 +2409,13 @@ static int reuse_worktree_file(const char *name, const unsigned char *sha1, int
if (hashcmp(sha1, ce->sha1) || !S_ISREG(ce->ce_mode))
return 0;
+ /*
+ * If ce is marked as "assume unchanged", there is no
+ * guarantee that work tree matches what we are looking for.
+ */
+ if ((ce->ce_flags & CE_VALID) || ce_skip_worktree(ce))
+ return 0;
+
/*
* If ce matches the file in the work tree, we can reuse it.
*/
@@ -1739,10 +2428,9 @@ static int reuse_worktree_file(const char *name, const unsigned char *sha1, int
static int populate_from_stdin(struct diff_filespec *s)
{
- struct strbuf buf;
+ struct strbuf buf = STRBUF_INIT;
size_t size = 0;
- strbuf_init(&buf, 0);
if (strbuf_read(&buf, 0, 0) < 0)
return error("error while reading from stdin %s",
strerror(errno));
static int diff_populate_gitlink(struct diff_filespec *s, int size_only)
{
int len;
- char *data = xmalloc(100);
+ char *data = xmalloc(100), *dirty = "";
+
+ /* Are we looking at the work tree? */
+ if (s->dirty_submodule)
+ dirty = "-dirty";
+
len = snprintf(data, 100,
- "Subproject commit %s\n", sha1_to_hex(s->sha1));
+ "Subproject commit %s%s\n", sha1_to_hex(s->sha1), dirty);
s->data = data;
s->size = len;
s->should_free = 1;
if (!s->sha1_valid ||
reuse_worktree_file(s->path, s->sha1, 0)) {
- struct strbuf buf;
+ struct strbuf buf = STRBUF_INIT;
struct stat st;
int fd;
s->size = xsize_t(st.st_size);
if (!s->size)
goto empty;
- if (size_only)
- return 0;
if (S_ISLNK(st.st_mode)) {
- int ret;
- s->data = xmalloc(s->size);
- s->should_free = 1;
- ret = readlink(s->path, s->data, s->size);
- if (ret < 0) {
- free(s->data);
+ struct strbuf sb = STRBUF_INIT;
+
+ if (strbuf_readlink(&sb, s->path, s->size))
goto err_empty;
- }
+ s->size = sb.len;
+ s->data = strbuf_detach(&sb, NULL);
+ s->should_free = 1;
return 0;
}
+ if (size_only)
+ return 0;
fd = open(s->path, O_RDONLY);
if (fd < 0)
goto err_empty;
/*
* Convert from working tree format to canonical git format
*/
- strbuf_init(&buf, 0);
if (convert_to_git(s->path, s->data, s->size, &buf, safe_crlf)) {
size_t size = 0;
munmap(s->data, s->size);
}
else {
enum object_type type;
- if (size_only)
+ if (size_only) {
type = sha1_object_info(s->sha1, &s->size);
- else {
+ if (type < 0)
+ die("unable to read %s", sha1_to_hex(s->sha1));
+ } else {
s->data = read_sha1_file(s->sha1, &type, &s->size);
+ if (!s->data)
+ die("unable to read %s", sha1_to_hex(s->sha1));
s->should_free = 1;
}
}
s->cnt_data = NULL;
}
-static void prep_temp_blob(struct diff_tempfile *temp,
+static void prep_temp_blob(const char *path, struct diff_tempfile *temp,
void *blob,
unsigned long size,
const unsigned char *sha1,
int mode)
{
int fd;
+ struct strbuf buf = STRBUF_INIT;
+ struct strbuf template = STRBUF_INIT;
+ char *path_dup = xstrdup(path);
+ const char *base = basename(path_dup);
- fd = git_mkstemp(temp->tmp_path, PATH_MAX, ".diff_XXXXXX");
+ /* Generate "XXXXXX_basename.ext" */
+ strbuf_addstr(&template, "XXXXXX_");
+ strbuf_addstr(&template, base);
+
+ fd = git_mkstemps(temp->tmp_path, PATH_MAX, template.buf,
+ strlen(base) + 1);
if (fd < 0)
- die("unable to create temp-file: %s", strerror(errno));
+ die_errno("unable to create temp-file");
+ if (convert_to_working_tree(path,
+ (const char *)blob, (size_t)size, &buf)) {
+ blob = buf.buf;
+ size = buf.len;
+ }
if (write_in_full(fd, blob, size) != size)
- die("unable to write temp-file");
+ die_errno("unable to write temp-file");
close(fd);
temp->name = temp->tmp_path;
strcpy(temp->hex, sha1_to_hex(sha1));
temp->hex[40] = 0;
sprintf(temp->mode, "%06o", mode);
+ strbuf_release(&buf);
+ strbuf_release(&template);
+ free(path_dup);
}
-static void prepare_temp_file(const char *name,
- struct diff_tempfile *temp,
- struct diff_filespec *one)
+static struct diff_tempfile *prepare_temp_file(const char *name,
+ struct diff_filespec *one)
{
+ struct diff_tempfile *temp = claim_diff_tempfile();
+
if (!DIFF_FILE_VALID(one)) {
not_a_valid_file:
/* A '-' entry produces this for file-2, and
temp->name = "/dev/null";
strcpy(temp->hex, ".");
strcpy(temp->mode, ".");
- return;
+ return temp;
+ }
+
+ if (!remove_tempfile_installed) {
+ atexit(remove_tempfile);
+ sigchain_push_common(remove_tempfile_on_signal);
+ remove_tempfile_installed = 1;
}
if (!one->sha1_valid ||
if (lstat(name, &st) < 0) {
if (errno == ENOENT)
goto not_a_valid_file;
- die("stat(%s): %s", name, strerror(errno));
+ die_errno("stat(%s)", name);
}
if (S_ISLNK(st.st_mode)) {
- int ret;
- char buf[PATH_MAX + 1]; /* ought to be SYMLINK_MAX */
- size_t sz = xsize_t(st.st_size);
- if (sizeof(buf) <= st.st_size)
- die("symlink too long: %s", name);
- ret = readlink(name, buf, sz);
- if (ret < 0)
- die("readlink(%s)", name);
- prep_temp_blob(temp, buf, sz,
+ struct strbuf sb = STRBUF_INIT;
+ if (strbuf_readlink(&sb, name, st.st_size) < 0)
+ die_errno("readlink(%s)", name);
+ prep_temp_blob(name, temp, sb.buf, sb.len,
(one->sha1_valid ?
one->sha1 : null_sha1),
(one->sha1_valid ?
one->mode : S_IFLNK));
+ strbuf_release(&sb);
}
else {
/* we can borrow from the file in the work tree */
* contents from the work tree, we always want
* one->mode. mode is trustworthy even when
* !(one->sha1_valid), as long as
- * DIFF_FILE_VALID(one).
- */
- sprintf(temp->mode, "%06o", one->mode);
- }
- return;
- }
- else {
- if (diff_populate_filespec(one, 0))
- die("cannot read data blob for %s", one->path);
- prep_temp_blob(temp, one->data, one->size,
- one->sha1, one->mode);
- }
-}
-
-static void remove_tempfile(void)
-{
- int i;
-
- for (i = 0; i < 2; i++)
- if (diff_temp[i].name == diff_temp[i].tmp_path) {
- unlink(diff_temp[i].name);
- diff_temp[i].name = NULL;
- }
-}
-
-static void remove_tempfile_on_signal(int signo)
-{
- remove_tempfile();
- signal(SIGINT, SIG_DFL);
- raise(signo);
+ * DIFF_FILE_VALID(one).
+ */
+ sprintf(temp->mode, "%06o", one->mode);
+ }
+ return temp;
+ }
+ else {
+ if (diff_populate_filespec(one, 0))
+ die("cannot read data blob for %s", one->path);
+ prep_temp_blob(name, temp, one->data, one->size,
+ one->sha1, one->mode);
+ }
+ return temp;
}
/* An external diff command takes:
int complete_rewrite)
{
const char *spawn_arg[10];
- struct diff_tempfile *temp = diff_temp;
int retval;
- static int atexit_asked = 0;
- const char *othername;
const char **arg = &spawn_arg[0];
- othername = (other? other : name);
- if (one && two) {
- prepare_temp_file(name, &temp[0], one);
- prepare_temp_file(othername, &temp[1], two);
- if (! atexit_asked &&
- (temp[0].name == temp[0].tmp_path ||
- temp[1].name == temp[1].tmp_path)) {
- atexit_asked = 1;
- atexit(remove_tempfile);
- }
- signal(SIGINT, remove_tempfile_on_signal);
- }
-
if (one && two) {
+ struct diff_tempfile *temp_one, *temp_two;
+ const char *othername = (other ? other : name);
+ temp_one = prepare_temp_file(name, one);
+ temp_two = prepare_temp_file(othername, two);
*arg++ = pgm;
*arg++ = name;
- *arg++ = temp[0].name;
- *arg++ = temp[0].hex;
- *arg++ = temp[0].mode;
- *arg++ = temp[1].name;
- *arg++ = temp[1].hex;
- *arg++ = temp[1].mode;
+ *arg++ = temp_one->name;
+ *arg++ = temp_one->hex;
+ *arg++ = temp_one->mode;
+ *arg++ = temp_two->name;
+ *arg++ = temp_two->hex;
+ *arg++ = temp_two->mode;
if (other) {
*arg++ = other;
*arg++ = xfrm_msg;
}
*arg = NULL;
fflush(NULL);
- retval = run_command_v_opt(spawn_arg, 0);
+ retval = run_command_v_opt(spawn_arg, RUN_USING_SHELL);
remove_tempfile();
if (retval) {
fprintf(stderr, "external diff died, stopping at %s.\n", name);
}
}
-static const char *external_diff_attr(const char *name)
+static int similarity_index(struct diff_filepair *p)
{
- struct git_attr_check attr_diff_check;
-
- if (!name)
- return NULL;
+ return p->score * 100 / MAX_SCORE;
+}
- setup_diff_attr_check(&attr_diff_check);
- if (!git_checkattr(name, 1, &attr_diff_check)) {
- const char *value = attr_diff_check.value;
- if (!ATTR_TRUE(value) &&
- !ATTR_FALSE(value) &&
- !ATTR_UNSET(value)) {
- struct ll_diff_driver *drv;
+static void fill_metainfo(struct strbuf *msg,
+ const char *name,
+ const char *other,
+ struct diff_filespec *one,
+ struct diff_filespec *two,
+ struct diff_options *o,
+ struct diff_filepair *p,
+ int *must_show_header,
+ int use_color)
+{
+ const char *set = diff_get_color(use_color, DIFF_METAINFO);
+ const char *reset = diff_get_color(use_color, DIFF_RESET);
+ struct strbuf *msgbuf;
+ char *line_prefix = "";
+
+ *must_show_header = 1;
+ if (o->output_prefix) {
+ msgbuf = o->output_prefix(o, o->output_prefix_data);
+ line_prefix = msgbuf->buf;
+ }
+ strbuf_init(msg, PATH_MAX * 2 + 300);
+ switch (p->status) {
+ case DIFF_STATUS_COPIED:
+ strbuf_addf(msg, "%s%ssimilarity index %d%%",
+ line_prefix, set, similarity_index(p));
+ strbuf_addf(msg, "%s\n%s%scopy from ",
+ reset, line_prefix, set);
+ quote_c_style(name, msg, NULL, 0);
+ strbuf_addf(msg, "%s\n%s%scopy to ", reset, line_prefix, set);
+ quote_c_style(other, msg, NULL, 0);
+ strbuf_addf(msg, "%s\n", reset);
+ break;
+ case DIFF_STATUS_RENAMED:
+ strbuf_addf(msg, "%s%ssimilarity index %d%%",
+ line_prefix, set, similarity_index(p));
+ strbuf_addf(msg, "%s\n%s%srename from ",
+ reset, line_prefix, set);
+ quote_c_style(name, msg, NULL, 0);
+ strbuf_addf(msg, "%s\n%s%srename to ",
+ reset, line_prefix, set);
+ quote_c_style(other, msg, NULL, 0);
+ strbuf_addf(msg, "%s\n", reset);
+ break;
+ case DIFF_STATUS_MODIFIED:
+ if (p->score) {
+ strbuf_addf(msg, "%s%sdissimilarity index %d%%%s\n",
+ line_prefix,
+ set, similarity_index(p), reset);
+ break;
+ }
+ /* fallthru */
+ default:
+ *must_show_header = 0;
+ }
+ if (one && two && hashcmp(one->sha1, two->sha1)) {
+ int abbrev = DIFF_OPT_TST(o, FULL_INDEX) ? 40 : DEFAULT_ABBREV;
- for (drv = user_diff; drv; drv = drv->next)
- if (!strcmp(drv->name, value))
- return drv->cmd;
+ if (DIFF_OPT_TST(o, BINARY)) {
+ mmfile_t mf;
+ if ((!fill_mmfile(&mf, one) && diff_filespec_is_binary(one)) ||
+ (!fill_mmfile(&mf, two) && diff_filespec_is_binary(two)))
+ abbrev = 40;
}
+ strbuf_addf(msg, "%s%sindex %s..", line_prefix, set,
+ find_unique_abbrev(one->sha1, abbrev));
+ strbuf_addstr(msg, find_unique_abbrev(two->sha1, abbrev));
+ if (one->mode == two->mode)
+ strbuf_addf(msg, " %06o", one->mode);
+ strbuf_addf(msg, "%s\n", reset);
}
- return NULL;
}
static void run_diff_cmd(const char *pgm,
const char *attr_path,
struct diff_filespec *one,
struct diff_filespec *two,
- const char *xfrm_msg,
+ struct strbuf *msg,
struct diff_options *o,
- int complete_rewrite)
+ struct diff_filepair *p)
{
+ const char *xfrm_msg = NULL;
+ int complete_rewrite = (p->status == DIFF_STATUS_MODIFIED) && p->score;
+ int must_show_header = 0;
+
if (!DIFF_OPT_TST(o, ALLOW_EXTERNAL))
pgm = NULL;
else {
- const char *cmd = external_diff_attr(attr_path);
- if (cmd)
- pgm = cmd;
+ struct userdiff_driver *drv = userdiff_find_by_path(attr_path);
+ if (drv && drv->external)
+ pgm = drv->external;
+ }
+
+ if (msg) {
+ /*
+ * don't use colors when the header is intended for an
+ * external diff driver
+ */
+ fill_metainfo(msg, name, other, one, two, o, p,
+ &must_show_header,
+ DIFF_OPT_TST(o, COLOR_DIFF) && !pgm);
+ xfrm_msg = msg->len ? msg->buf : NULL;
}
if (pgm) {
}
if (one && two)
builtin_diff(name, other ? other : name,
- one, two, xfrm_msg, o, complete_rewrite);
+ one, two, xfrm_msg, must_show_header,
+ o, complete_rewrite);
else
fprintf(o->file, "* Unmerged path %s\n", name);
}
return;
}
if (lstat(one->path, &st) < 0)
- die("stat %s", one->path);
+ die_errno("stat '%s'", one->path);
if (index_path(one->sha1, one->path, &st, 0))
- die("cannot hash %s\n", one->path);
+ die("cannot hash %s", one->path);
}
}
else
hashclr(one->sha1);
}
-static int similarity_index(struct diff_filepair *p)
-{
- return p->score * 100 / MAX_SCORE;
-}
-
static void strip_prefix(int prefix_length, const char **namep, const char **otherp)
{
/* Strip the prefix but do not molest /dev/null and absolute paths */
- if (*namep && **namep != '/')
+ if (*namep && **namep != '/') {
*namep += prefix_length;
- if (*otherp && **otherp != '/')
+ if (**namep == '/')
+ ++*namep;
+ }
+ if (*otherp && **otherp != '/') {
*otherp += prefix_length;
+ if (**otherp == '/')
+ ++*otherp;
+ }
}
static void run_diff(struct diff_filepair *p, struct diff_options *o)
{
const char *pgm = external_diff();
struct strbuf msg;
- char *xfrm_msg;
struct diff_filespec *one = p->one;
struct diff_filespec *two = p->two;
const char *name;
const char *other;
const char *attr_path;
- int complete_rewrite = 0;
name = p->one->path;
other = (strcmp(name, p->two->path) ? p->two->path : NULL);
if (DIFF_PAIR_UNMERGED(p)) {
run_diff_cmd(pgm, name, NULL, attr_path,
- NULL, NULL, NULL, o, 0);
+ NULL, NULL, NULL, o, p);
return;
}
diff_fill_sha1_info(one);
diff_fill_sha1_info(two);
- strbuf_init(&msg, PATH_MAX * 2 + 300);
- switch (p->status) {
- case DIFF_STATUS_COPIED:
- strbuf_addf(&msg, "similarity index %d%%", similarity_index(p));
- strbuf_addstr(&msg, "\ncopy from ");
- quote_c_style(name, &msg, NULL, 0);
- strbuf_addstr(&msg, "\ncopy to ");
- quote_c_style(other, &msg, NULL, 0);
- strbuf_addch(&msg, '\n');
- break;
- case DIFF_STATUS_RENAMED:
- strbuf_addf(&msg, "similarity index %d%%", similarity_index(p));
- strbuf_addstr(&msg, "\nrename from ");
- quote_c_style(name, &msg, NULL, 0);
- strbuf_addstr(&msg, "\nrename to ");
- quote_c_style(other, &msg, NULL, 0);
- strbuf_addch(&msg, '\n');
- break;
- case DIFF_STATUS_MODIFIED:
- if (p->score) {
- strbuf_addf(&msg, "dissimilarity index %d%%\n",
- similarity_index(p));
- complete_rewrite = 1;
- break;
- }
- /* fallthru */
- default:
- /* nothing */
- ;
- }
-
- if (hashcmp(one->sha1, two->sha1)) {
- int abbrev = DIFF_OPT_TST(o, FULL_INDEX) ? 40 : DEFAULT_ABBREV;
-
- if (DIFF_OPT_TST(o, BINARY)) {
- mmfile_t mf;
- if ((!fill_mmfile(&mf, one) && diff_filespec_is_binary(one)) ||
- (!fill_mmfile(&mf, two) && diff_filespec_is_binary(two)))
- abbrev = 40;
- }
- strbuf_addf(&msg, "index %.*s..%.*s",
- abbrev, sha1_to_hex(one->sha1),
- abbrev, sha1_to_hex(two->sha1));
- if (one->mode == two->mode)
- strbuf_addf(&msg, " %06o", one->mode);
- strbuf_addch(&msg, '\n');
- }
-
- if (msg.len)
- strbuf_setlen(&msg, msg.len - 1);
- xfrm_msg = msg.len ? msg.buf : NULL;
-
if (!pgm &&
DIFF_FILE_VALID(one) && DIFF_FILE_VALID(two) &&
(S_IFMT & one->mode) != (S_IFMT & two->mode)) {
- /* a filepair that changes between file and symlink
+ /*
+ * a filepair that changes between file and symlink
* needs to be split into deletion and creation.
*/
struct diff_filespec *null = alloc_filespec(two->path);
run_diff_cmd(NULL, name, other, attr_path,
- one, null, xfrm_msg, o, 0);
+ one, null, &msg, o, p);
free(null);
+ strbuf_release(&msg);
+
null = alloc_filespec(one->path);
run_diff_cmd(NULL, name, other, attr_path,
- null, two, xfrm_msg, o, 0);
+ null, two, &msg, o, p);
free(null);
}
else
run_diff_cmd(pgm, name, other, attr_path,
- one, two, xfrm_msg, o, complete_rewrite);
+ one, two, &msg, o, p);
strbuf_release(&msg);
}
void diff_setup(struct diff_options *options)
{
- memset(options, 0, sizeof(*options));
+ memcpy(options, &default_diff_options, sizeof(*options));
options->file = stdout;
options->line_termination = '\n';
options->break_opt = -1;
options->rename_limit = -1;
- options->dirstat_percent = 3;
+ options->dirstat_permille = diff_dirstat_permille_default;
options->context = 3;
options->change = diff_change;
options->add_remove = diff_addremove;
if (diff_use_color_default > 0)
DIFF_OPT_SET(options, COLOR_DIFF);
- else
- DIFF_OPT_CLR(options, COLOR_DIFF);
options->detect_rename = diff_detect_rename_default;
- options->a_prefix = "a/";
- options->b_prefix = "b/";
+ if (diff_no_prefix) {
+ options->a_prefix = options->b_prefix = "";
+ } else if (!diff_mnemonic_prefix) {
+ options->a_prefix = "a/";
+ options->b_prefix = "b/";
+ }
}
int diff_setup_done(struct diff_options *options)
if (count > 1)
die("--name-only, --name-status, --check and -s are mutually exclusive");
+ /*
+ * Most of the time we can say "there are changes"
+ * only by checking if there are changed paths, but
+ * --ignore-whitespace* options force us to look
+ * inside contents.
+ */
+
+ if (DIFF_XDL_TST(options, IGNORE_WHITESPACE) ||
+ DIFF_XDL_TST(options, IGNORE_WHITESPACE_CHANGE) ||
+ DIFF_XDL_TST(options, IGNORE_WHITESPACE_AT_EOL))
+ DIFF_OPT_SET(options, DIFF_FROM_CONTENTS);
+ else
+ DIFF_OPT_CLR(options, DIFF_FROM_CONTENTS);
+
if (DIFF_OPT_TST(options, FIND_COPIES_HARDER))
options->detect_rename = DIFF_DETECT_COPY;
*/
if (options->pickaxe)
DIFF_OPT_SET(options, RECURSIVE);
+ /*
+ * When patches are generated, submodules diffed against the work tree
+ * must be checked for dirtiness too so it can be shown in the output
+ */
+ if (options->output_format & DIFF_FORMAT_PATCH)
+ DIFF_OPT_SET(options, DIRTY_SUBMODULES);
if (options->detect_rename && options->rename_limit < 0)
options->rename_limit = diff_rename_limit_default;
* to have found. It does not make sense not to return with
* exit code in such a case either.
*/
- if (DIFF_OPT_TST(options, QUIET)) {
+ if (DIFF_OPT_TST(options, QUICK)) {
options->output_format = DIFF_FORMAT_NO_OUTPUT;
DIFF_OPT_SET(options, EXIT_WITH_STATUS);
}
- /*
- * If we postprocess in diffcore, we cannot simply return
- * upon the first hit. We need to run diff as usual.
- */
- if (options->pickaxe || options->filter)
- DIFF_OPT_CLR(options, QUIET);
-
return 0;
}
@@ -2442,12 +3163,118 @@ static int opt_arg(const char *arg, int arg_short, const char *arg_long, int *va
static int diff_scoreopt_parse(const char *opt);
+static inline int short_opt(char opt, const char **argv,
+ const char **optarg)
+{
+ const char *arg = argv[0];
+ if (arg[0] != '-' || arg[1] != opt)
+ return 0;
+ if (arg[2] != '\0') {
+ *optarg = arg + 2;
+ return 1;
+ }
+ if (!argv[1])
+ die("Option '%c' requires a value", opt);
+ *optarg = argv[1];
+ return 2;
+}
+
+int parse_long_opt(const char *opt, const char **argv,
+ const char **optarg)
+{
+ const char *arg = argv[0];
+ if (arg[0] != '-' || arg[1] != '-')
+ return 0;
+ arg += strlen("--");
+ if (prefixcmp(arg, opt))
+ return 0;
+ arg += strlen(opt);
+ if (*arg == '=') { /* sticked form: --option=value */
+ *optarg = arg + 1;
+ return 1;
+ }
+ if (*arg != '\0')
+ return 0;
+ /* separate form: --option value */
+ if (!argv[1])
+ die("Option '--%s' requires a value", opt);
+ *optarg = argv[1];
+ return 2;
+}
+
+static int stat_opt(struct diff_options *options, const char **av)
+{
+ const char *arg = av[0];
+ char *end;
+ int width = options->stat_width;
+ int name_width = options->stat_name_width;
+ int argcount = 1;
+
+ arg += strlen("--stat");
+ end = (char *)arg;
+
+ switch (*arg) {
+ case '-':
+ if (!prefixcmp(arg, "-width")) {
+ arg += strlen("-width");
+ if (*arg == '=')
+ width = strtoul(arg + 1, &end, 10);
+ else if (!*arg && !av[1])
+ die("Option '--stat-width' requires a value");
+ else if (!*arg) {
+ width = strtoul(av[1], &end, 10);
+ argcount = 2;
+ }
+ } else if (!prefixcmp(arg, "-name-width")) {
+ arg += strlen("-name-width");
+ if (*arg == '=')
+ name_width = strtoul(arg + 1, &end, 10);
+ else if (!*arg && !av[1])
+ die("Option '--stat-name-width' requires a value");
+ else if (!*arg) {
+ name_width = strtoul(av[1], &end, 10);
+ argcount = 2;
+ }
+ }
+ break;
+ case '=':
+ width = strtoul(arg+1, &end, 10);
+ if (*end == ',')
+ name_width = strtoul(end+1, &end, 10);
+ }
+
+ /* Important! This checks all the error cases! */
+ if (*end)
+ return 0;
+ options->output_format |= DIFF_FORMAT_DIFFSTAT;
+ options->stat_name_width = name_width;
+ options->stat_width = width;
+ return argcount;
+}
+
+static int parse_dirstat_opt(struct diff_options *options, const char *params)
+{
+ struct strbuf errmsg = STRBUF_INIT;
+ if (parse_dirstat_params(options, params, &errmsg))
+ die(_("Failed to parse --dirstat/-X option parameter:\n%s"),
+ errmsg.buf);
+ strbuf_release(&errmsg);
+ /*
+ * The caller knows a dirstat-related option is given from the command
+ * line; allow it to say "return this_function();"
+ */
+ options->output_format |= DIFF_FORMAT_DIRSTAT;
+ return 1;
+}
+
int diff_opt_parse(struct diff_options *options, const char **av, int ac)
{
const char *arg = av[0];
+ const char *optarg;
+ int argcount;
/* Output format options */
- if (!strcmp(arg, "-p") || !strcmp(arg, "-u"))
+ if (!strcmp(arg, "-p") || !strcmp(arg, "-u") || !strcmp(arg, "--patch"))
options->output_format |= DIFF_FORMAT_PATCH;
else if (opt_arg(arg, 'U', "unified", &options->context))
options->output_format |= DIFF_FORMAT_PATCH;
options->output_format |= DIFF_FORMAT_NUMSTAT;
else if (!strcmp(arg, "--shortstat"))
options->output_format |= DIFF_FORMAT_SHORTSTAT;
- else if (opt_arg(arg, 'X', "dirstat", &options->dirstat_percent))
- options->output_format |= DIFF_FORMAT_DIRSTAT;
+ else if (!strcmp(arg, "-X") || !strcmp(arg, "--dirstat"))
+ return parse_dirstat_opt(options, "");
+ else if (!prefixcmp(arg, "-X"))
+ return parse_dirstat_opt(options, arg + 2);
+ else if (!prefixcmp(arg, "--dirstat="))
+ return parse_dirstat_opt(options, arg + 10);
else if (!strcmp(arg, "--cumulative"))
- options->output_format |= DIFF_FORMAT_CUMULATIVE;
+ return parse_dirstat_opt(options, "cumulative");
+ else if (!strcmp(arg, "--dirstat-by-file"))
+ return parse_dirstat_opt(options, "files");
+ else if (!prefixcmp(arg, "--dirstat-by-file=")) {
+ parse_dirstat_opt(options, "files");
+ return parse_dirstat_opt(options, arg + 18);
+ }
else if (!strcmp(arg, "--check"))
options->output_format |= DIFF_FORMAT_CHECKDIFF;
else if (!strcmp(arg, "--summary"))
options->output_format |= DIFF_FORMAT_NAME_STATUS;
else if (!strcmp(arg, "-s"))
options->output_format |= DIFF_FORMAT_NO_OUTPUT;
- else if (!prefixcmp(arg, "--stat")) {
- char *end;
- int width = options->stat_width;
- int name_width = options->stat_name_width;
- arg += 6;
- end = (char *)arg;
-
- switch (*arg) {
- case '-':
- if (!prefixcmp(arg, "-width="))
- width = strtoul(arg + 7, &end, 10);
- else if (!prefixcmp(arg, "-name-width="))
- name_width = strtoul(arg + 12, &end, 10);
- break;
- case '=':
- width = strtoul(arg+1, &end, 10);
- if (*end == ',')
- name_width = strtoul(end+1, &end, 10);
- }
-
- /* Important! This checks all the error cases! */
- if (*end)
- return 0;
- options->output_format |= DIFF_FORMAT_DIFFSTAT;
- options->stat_name_width = name_width;
- options->stat_width = width;
- }
+ else if (!prefixcmp(arg, "--stat"))
+ /* --stat, --stat-width, or --stat-name-width */
+ return stat_opt(options, av);
/* renames options */
- else if (!prefixcmp(arg, "-B")) {
+ else if (!prefixcmp(arg, "-B") || !prefixcmp(arg, "--break-rewrites=") ||
+ !strcmp(arg, "--break-rewrites")) {
if ((options->break_opt = diff_scoreopt_parse(arg)) == -1)
- return -1;
+ return error("invalid argument to -B: %s", arg+2);
}
- else if (!prefixcmp(arg, "-M")) {
+ else if (!prefixcmp(arg, "-M") || !prefixcmp(arg, "--find-renames=") ||
+ !strcmp(arg, "--find-renames")) {
if ((options->rename_score = diff_scoreopt_parse(arg)) == -1)
- return -1;
+ return error("invalid argument to -M: %s", arg+2);
options->detect_rename = DIFF_DETECT_RENAME;
}
- else if (!prefixcmp(arg, "-C")) {
+ else if (!strcmp(arg, "-D") || !strcmp(arg, "--irreversible-delete")) {
+ options->irreversible_delete = 1;
+ }
+ else if (!prefixcmp(arg, "-C") || !prefixcmp(arg, "--find-copies=") ||
+ !strcmp(arg, "--find-copies")) {
if (options->detect_rename == DIFF_DETECT_COPY)
DIFF_OPT_SET(options, FIND_COPIES_HARDER);
if ((options->rename_score = diff_scoreopt_parse(arg)) == -1)
- return -1;
+ return error("invalid argument to -C: %s", arg+2);
options->detect_rename = DIFF_DETECT_COPY;
}
else if (!strcmp(arg, "--no-renames"))
/* xdiff options */
else if (!strcmp(arg, "-w") || !strcmp(arg, "--ignore-all-space"))
- options->xdl_opts |= XDF_IGNORE_WHITESPACE;
+ DIFF_XDL_SET(options, IGNORE_WHITESPACE);
else if (!strcmp(arg, "-b") || !strcmp(arg, "--ignore-space-change"))
- options->xdl_opts |= XDF_IGNORE_WHITESPACE_CHANGE;
+ DIFF_XDL_SET(options, IGNORE_WHITESPACE_CHANGE);
else if (!strcmp(arg, "--ignore-space-at-eol"))
- options->xdl_opts |= XDF_IGNORE_WHITESPACE_AT_EOL;
+ DIFF_XDL_SET(options, IGNORE_WHITESPACE_AT_EOL);
+ else if (!strcmp(arg, "--patience"))
+ DIFF_XDL_SET(options, PATIENCE_DIFF);
/* flags options */
else if (!strcmp(arg, "--binary")) {
DIFF_OPT_SET(options, FOLLOW_RENAMES);
else if (!strcmp(arg, "--color"))
DIFF_OPT_SET(options, COLOR_DIFF);
+ else if (!prefixcmp(arg, "--color=")) {
+ int value = git_config_colorbool(NULL, arg+8, -1);
+ if (value == 0)
+ DIFF_OPT_CLR(options, COLOR_DIFF);
+ else if (value > 0)
+ DIFF_OPT_SET(options, COLOR_DIFF);
+ else
+ return error("option `color' expects \"always\", \"auto\", or \"never\"");
+ }
else if (!strcmp(arg, "--no-color"))
DIFF_OPT_CLR(options, COLOR_DIFF);
- else if (!strcmp(arg, "--color-words"))
- options->flags |= DIFF_OPT_COLOR_DIFF | DIFF_OPT_COLOR_DIFF_WORDS;
+ else if (!strcmp(arg, "--color-words")) {
+ DIFF_OPT_SET(options, COLOR_DIFF);
+ options->word_diff = DIFF_WORDS_COLOR;
+ }
+ else if (!prefixcmp(arg, "--color-words=")) {
+ DIFF_OPT_SET(options, COLOR_DIFF);
+ options->word_diff = DIFF_WORDS_COLOR;
+ options->word_regex = arg + 14;
+ }
+ else if (!strcmp(arg, "--word-diff")) {
+ if (options->word_diff == DIFF_WORDS_NONE)
+ options->word_diff = DIFF_WORDS_PLAIN;
+ }
+ else if (!prefixcmp(arg, "--word-diff=")) {
+ const char *type = arg + 12;
+ if (!strcmp(type, "plain"))
+ options->word_diff = DIFF_WORDS_PLAIN;
+ else if (!strcmp(type, "color")) {
+ DIFF_OPT_SET(options, COLOR_DIFF);
+ options->word_diff = DIFF_WORDS_COLOR;
+ }
+ else if (!strcmp(type, "porcelain"))
+ options->word_diff = DIFF_WORDS_PORCELAIN;
+ else if (!strcmp(type, "none"))
+ options->word_diff = DIFF_WORDS_NONE;
+ else
+ die("bad --word-diff argument: %s", type);
+ }
+ else if ((argcount = parse_long_opt("word-diff-regex", av, &optarg))) {
+ if (options->word_diff == DIFF_WORDS_NONE)
+ options->word_diff = DIFF_WORDS_PLAIN;
+ options->word_regex = optarg;
+ return argcount;
+ }
else if (!strcmp(arg, "--exit-code"))
DIFF_OPT_SET(options, EXIT_WITH_STATUS);
else if (!strcmp(arg, "--quiet"))
- DIFF_OPT_SET(options, QUIET);
+ DIFF_OPT_SET(options, QUICK);
else if (!strcmp(arg, "--ext-diff"))
DIFF_OPT_SET(options, ALLOW_EXTERNAL);
else if (!strcmp(arg, "--no-ext-diff"))
DIFF_OPT_CLR(options, ALLOW_EXTERNAL);
- else if (!strcmp(arg, "--ignore-submodules"))
- DIFF_OPT_SET(options, IGNORE_SUBMODULES);
+ else if (!strcmp(arg, "--textconv"))
+ DIFF_OPT_SET(options, ALLOW_TEXTCONV);
+ else if (!strcmp(arg, "--no-textconv"))
+ DIFF_OPT_CLR(options, ALLOW_TEXTCONV);
+ else if (!strcmp(arg, "--ignore-submodules")) {
+ DIFF_OPT_SET(options, OVERRIDE_SUBMODULE_CONFIG);
+ handle_ignore_submodules_arg(options, "all");
+ } else if (!prefixcmp(arg, "--ignore-submodules=")) {
+ DIFF_OPT_SET(options, OVERRIDE_SUBMODULE_CONFIG);
+ handle_ignore_submodules_arg(options, arg + 20);
+ } else if (!strcmp(arg, "--submodule"))
+ DIFF_OPT_SET(options, SUBMODULE_LOG);
+ else if (!prefixcmp(arg, "--submodule=")) {
+ if (!strcmp(arg + 12, "log"))
+ DIFF_OPT_SET(options, SUBMODULE_LOG);
+ }
/* misc options */
else if (!strcmp(arg, "-z"))
options->line_termination = 0;
- else if (!prefixcmp(arg, "-l"))
- options->rename_limit = strtoul(arg+2, NULL, 10);
- else if (!prefixcmp(arg, "-S"))
- options->pickaxe = arg + 2;
+ else if ((argcount = short_opt('l', av, &optarg))) {
+ options->rename_limit = strtoul(optarg, NULL, 10);
+ return argcount;
+ }
+ else if ((argcount = short_opt('S', av, &optarg))) {
+ options->pickaxe = optarg;
+ options->pickaxe_opts |= DIFF_PICKAXE_KIND_S;
+ return argcount;
+ } else if ((argcount = short_opt('G', av, &optarg))) {
+ options->pickaxe = optarg;
+ options->pickaxe_opts |= DIFF_PICKAXE_KIND_G;
+ return argcount;
+ }
else if (!strcmp(arg, "--pickaxe-all"))
- options->pickaxe_opts = DIFF_PICKAXE_ALL;
+ options->pickaxe_opts |= DIFF_PICKAXE_ALL;
else if (!strcmp(arg, "--pickaxe-regex"))
- options->pickaxe_opts = DIFF_PICKAXE_REGEX;
- else if (!prefixcmp(arg, "-O"))
- options->orderfile = arg + 2;
- else if (!prefixcmp(arg, "--diff-filter="))
- options->filter = arg + 14;
+ options->pickaxe_opts |= DIFF_PICKAXE_REGEX;
+ else if ((argcount = short_opt('O', av, &optarg))) {
+ options->orderfile = optarg;
+ return argcount;
+ }
+ else if ((argcount = parse_long_opt("diff-filter", av, &optarg))) {
+ options->filter = optarg;
+ return argcount;
+ }
else if (!strcmp(arg, "--abbrev"))
options->abbrev = DEFAULT_ABBREV;
else if (!prefixcmp(arg, "--abbrev=")) {
else if (40 < options->abbrev)
options->abbrev = 40;
}
- else if (!prefixcmp(arg, "--src-prefix="))
- options->a_prefix = arg + 13;
- else if (!prefixcmp(arg, "--dst-prefix="))
- options->b_prefix = arg + 13;
+ else if ((argcount = parse_long_opt("src-prefix", av, &optarg))) {
+ options->a_prefix = optarg;
+ return argcount;
+ }
+ else if ((argcount = parse_long_opt("dst-prefix", av, &optarg))) {
+ options->b_prefix = optarg;
+ return argcount;
+ }
else if (!strcmp(arg, "--no-prefix"))
options->a_prefix = options->b_prefix = "";
- else if (!prefixcmp(arg, "--output=")) {
- options->file = fopen(arg + strlen("--output="), "w");
+ else if (opt_arg(arg, '\0', "inter-hunk-context",
+ &options->interhunkcontext))
+ ;
+ else if ((argcount = parse_long_opt("output", av, &optarg))) {
+ options->file = fopen(optarg, "w");
+ if (!options->file)
+ die_errno("Could not open '%s'", optarg);
options->close_file = 1;
+ return argcount;
} else
return 0;
return 1;
}
-static int parse_num(const char **cp_p)
+int parse_rename_score(const char **cp_p)
{
unsigned long num, scale;
int ch, dot;
num = 0;
scale = 1;
dot = 0;
- for(;;) {
+ for (;;) {
ch = *cp;
if ( !dot && ch == '.' ) {
scale = 1;
if (*opt++ != '-')
return -1;
cmd = *opt++;
+ if (cmd == '-') {
+ /* convert the long-form arguments into short-form versions */
+ if (!prefixcmp(opt, "break-rewrites")) {
+ opt += strlen("break-rewrites");
+ if (*opt == 0 || *opt++ == '=')
+ cmd = 'B';
+ } else if (!prefixcmp(opt, "find-copies")) {
+ opt += strlen("find-copies");
+ if (*opt == 0 || *opt++ == '=')
+ cmd = 'C';
+ } else if (!prefixcmp(opt, "find-renames")) {
+ opt += strlen("find-renames");
+ if (*opt == 0 || *opt++ == '=')
+ cmd = 'M';
+ }
+ }
if (cmd != 'M' && cmd != 'C' && cmd != 'B')
return -1; /* that is not a -M, -C nor -B option */
- opt1 = parse_num(&opt);
+ opt1 = parse_rename_score(&opt);
if (cmd != 'B')
opt2 = 0;
else {
return -1; /* we expect -B80/99 or -B80 */
else {
opt++;
- opt2 = parse_num(&opt);
+ opt2 = parse_rename_score(&opt);
}
}
if (*opt != 0)
@@ -2729,6 +3644,11 @@ static void diff_flush_raw(struct diff_filepair *p, struct diff_options *opt)
{
int line_termination = opt->line_termination;
int inter_name_termination = line_termination ? '\t' : '\0';
+ if (opt->output_prefix) {
+ struct strbuf *msg = NULL;
+ msg = opt->output_prefix(opt, opt->output_prefix_data);
+ fprintf(opt->file, "%s", msg->buf);
+ }
if (!(opt->output_format & DIFF_FORMAT_NAME_STATUS)) {
fprintf(opt->file, ":%06o %06o %s ", p->one->mode, p->two->mode,
* dealing with a change.
*/
if (one->sha1_valid && two->sha1_valid &&
- !hashcmp(one->sha1, two->sha1))
+ !hashcmp(one->sha1, two->sha1) &&
+ !one->dirty_submodule && !two->dirty_submodule)
return 1; /* no change */
if (!one->sha1_valid && !two->sha1_valid)
return 1; /* both look at the same file on the filesystem. */
if ((DIFF_FILE_VALID(p->one) && S_ISDIR(p->one->mode)) ||
(DIFF_FILE_VALID(p->two) && S_ISDIR(p->two->mode)))
- return; /* no tree diffs in patch format */
+ return; /* no useful stat for tree diffs */
run_diffstat(p, o, diffstat);
}
if ((DIFF_FILE_VALID(p->one) && S_ISDIR(p->one->mode)) ||
(DIFF_FILE_VALID(p->two) && S_ISDIR(p->two->mode)))
- return; /* no tree diffs in patch format */
+ return; /* nothing to check in tree diffs */
run_checkdiff(p, o);
}
}
else if (hashcmp(p->one->sha1, p->two->sha1) ||
p->one->mode != p->two->mode ||
+ p->one->dirty_submodule ||
+ p->two->dirty_submodule ||
is_null_sha1(p->one->sha1))
p->status = DIFF_STATUS_MODIFIED;
else {
@@ -2971,55 +3894,68 @@ static void show_file_mode_name(FILE *file, const char *newdelete, struct diff_f
}
-static void show_mode_change(FILE *file, struct diff_filepair *p, int show_name)
+static void show_mode_change(FILE *file, struct diff_filepair *p, int show_name,
+ const char *line_prefix)
{
if (p->one->mode && p->two->mode && p->one->mode != p->two->mode) {
- fprintf(file, " mode change %06o => %06o%c", p->one->mode, p->two->mode,
- show_name ? ' ' : '\n');
+ fprintf(file, "%s mode change %06o => %06o%c", line_prefix, p->one->mode,
+ p->two->mode, show_name ? ' ' : '\n');
if (show_name) {
write_name_quoted(p->two->path, file, '\n');
}
}
}
-static void show_rename_copy(FILE *file, const char *renamecopy, struct diff_filepair *p)
+static void show_rename_copy(FILE *file, const char *renamecopy, struct diff_filepair *p,
+ const char *line_prefix)
{
char *names = pprint_rename(p->one->path, p->two->path);
fprintf(file, " %s %s (%d%%)\n", renamecopy, names, similarity_index(p));
free(names);
- show_mode_change(file, p, 0);
+ show_mode_change(file, p, 0, line_prefix);
}
-static void diff_summary(FILE *file, struct diff_filepair *p)
+static void diff_summary(struct diff_options *opt, struct diff_filepair *p)
{
+ FILE *file = opt->file;
+ char *line_prefix = "";
+
+ if (opt->output_prefix) {
+ struct strbuf *buf = opt->output_prefix(opt, opt->output_prefix_data);
+ line_prefix = buf->buf;
+ }
+
switch(p->status) {
case DIFF_STATUS_DELETED:
+ fputs(line_prefix, file);
show_file_mode_name(file, "delete", p->one);
break;
case DIFF_STATUS_ADDED:
+ fputs(line_prefix, file);
show_file_mode_name(file, "create", p->two);
break;
case DIFF_STATUS_COPIED:
- show_rename_copy(file, "copy", p);
+ fputs(line_prefix, file);
+ show_rename_copy(file, "copy", p, line_prefix);
break;
case DIFF_STATUS_RENAMED:
- show_rename_copy(file, "rename", p);
+ fputs(line_prefix, file);
+ show_rename_copy(file, "rename", p, line_prefix);
break;
default:
if (p->score) {
- fputs(" rewrite ", file);
+ fprintf(file, "%s rewrite ", line_prefix);
write_name_quoted(p->two->path, file, ' ');
fprintf(file, "(%d%%)\n", similarity_index(p));
}
- show_mode_change(file, p, !p->score);
+ show_mode_change(file, p, !p->score, line_prefix);
break;
}
}
struct patch_id_t {
- struct xdiff_emit_state xm;
- SHA_CTX *ctx;
+ git_SHA_CTX *ctx;
int patchlen;
};
new_len = remove_space(line, len);
- SHA1_Update(data->ctx, line, new_len);
+ git_SHA1_Update(data->ctx, line, new_len);
data->patchlen += new_len;
}
@@ -3056,23 +3992,22 @@ static int diff_get_patch_id(struct diff_options *options, unsigned char *sha1)
{
struct diff_queue_struct *q = &diff_queued_diff;
int i;
- SHA_CTX ctx;
+ git_SHA_CTX ctx;
struct patch_id_t data;
char buffer[PATH_MAX * 4 + 20];
- SHA1_Init(&ctx);
+ git_SHA1_Init(&ctx);
memset(&data, 0, sizeof(struct patch_id_t));
data.ctx = &ctx;
- data.xm.consume = patch_id_consume;
for (i = 0; i < q->nr; i++) {
xpparam_t xpp;
xdemitconf_t xecfg;
- xdemitcb_t ecb;
mmfile_t mf1, mf2;
struct diff_filepair *p = q->queue[i];
int len1, len2;
+ memset(&xpp, 0, sizeof(xpp));
memset(&xecfg, 0, sizeof(xecfg));
if (p->status == 0)
return error("internal diff status error");
@@ -3123,17 +4058,23 @@ static int diff_get_patch_id(struct diff_options *options, unsigned char *sha1)
len2, p->two->path,
len1, p->one->path,
len2, p->two->path);
- SHA1_Update(&ctx, buffer, len1);
+ git_SHA1_Update(&ctx, buffer, len1);
+
+ if (diff_filespec_is_binary(p->one) ||
+ diff_filespec_is_binary(p->two)) {
+ git_SHA1_Update(&ctx, sha1_to_hex(p->one->sha1), 40);
+ git_SHA1_Update(&ctx, sha1_to_hex(p->two->sha1), 40);
+ continue;
+ }
- xpp.flags = XDF_NEED_MINIMAL;
+ xpp.flags = 0;
xecfg.ctxlen = 3;
- xecfg.flags = XDL_EMIT_FUNCNAMES;
- ecb.outf = xdiff_outf;
- ecb.priv = &data;
- xdi_diff(&mf1, &mf2, &xpp, &xecfg, &ecb);
+ xecfg.flags = 0;
+ xdi_diff_outf(&mf1, &mf2, patch_id_consume, &data,
+ &xpp, &xecfg);
}
- SHA1_Final(sha1, &ctx);
+ git_SHA1_Final(sha1, &ctx);
return 0;
}
diff_free_filepair(q->queue[i]);
free(q->queue);
- q->queue = NULL;
- q->nr = q->alloc = 0;
+ DIFF_QUEUE_CLEAR(q);
return result;
}
return 1;
}
+static const char rename_limit_warning[] =
+"inexact rename detection was skipped due to too many files.";
+
+static const char degrade_cc_to_c_warning[] =
+"only found copies from modified paths due to too many files.";
+
+static const char rename_limit_advice[] =
+"you may want to set your %s variable to at least "
+"%d and retry the command.";
+
+void diff_warn_rename_limit(const char *varname, int needed, int degraded_cc)
+{
+ if (degraded_cc)
+ warning(degrade_cc_to_c_warning);
+ else if (needed)
+ warning(rename_limit_warning);
+ else
+ return;
+ if (0 < needed && needed < 32767)
+ warning(rename_limit_advice, varname, needed);
+}
+
void diff_flush(struct diff_options *options)
{
struct diff_queue_struct *q = &diff_queued_diff;
int i, output_format = options->output_format;
int separator = 0;
+ int dirstat_by_line = 0;
/*
* Order: raw, stat, summary, patch
separator++;
}
- if (output_format & (DIFF_FORMAT_DIFFSTAT|DIFF_FORMAT_SHORTSTAT|DIFF_FORMAT_NUMSTAT)) {
+ if (output_format & DIFF_FORMAT_DIRSTAT && DIFF_OPT_TST(options, DIRSTAT_BY_LINE))
+ dirstat_by_line = 1;
+
+ if (output_format & (DIFF_FORMAT_DIFFSTAT|DIFF_FORMAT_SHORTSTAT|DIFF_FORMAT_NUMSTAT) ||
+ dirstat_by_line) {
struct diffstat_t diffstat;
memset(&diffstat, 0, sizeof(struct diffstat_t));
- diffstat.xm.consume = diffstat_consume;
for (i = 0; i < q->nr; i++) {
struct diff_filepair *p = q->queue[i];
if (check_pair_status(p))
show_stats(&diffstat, options);
if (output_format & DIFF_FORMAT_SHORTSTAT)
show_shortstats(&diffstat, options);
+ if (output_format & DIFF_FORMAT_DIRSTAT)
+ show_dirstat_by_line(&diffstat, options);
free_diffstat_info(&diffstat);
separator++;
}
- if (output_format & DIFF_FORMAT_DIRSTAT)
+ if ((output_format & DIFF_FORMAT_DIRSTAT) && !dirstat_by_line)
show_dirstat(options);
if (output_format & DIFF_FORMAT_SUMMARY && !is_summary_empty(q)) {
- for (i = 0; i < q->nr; i++)
- diff_summary(options->file, q->queue[i]);
+ for (i = 0; i < q->nr; i++) {
+ diff_summary(options, q->queue[i]);
+ }
separator++;
}
+ if (output_format & DIFF_FORMAT_NO_OUTPUT &&
+ DIFF_OPT_TST(options, EXIT_WITH_STATUS) &&
+ DIFF_OPT_TST(options, DIFF_FROM_CONTENTS)) {
+ /*
+ * run diff_flush_patch for the exit status. setting
+ * options->file to /dev/null should be safe, becaue we
+ * aren't supposed to produce any output anyway.
+ */
+ if (options->close_file)
+ fclose(options->file);
+ options->file = fopen("/dev/null", "w");
+ if (!options->file)
+ die_errno("Could not open /dev/null");
+ options->close_file = 1;
+ for (i = 0; i < q->nr; i++) {
+ struct diff_filepair *p = q->queue[i];
+ if (check_pair_status(p))
+ diff_flush_patch(p, options);
+ if (options->found_changes)
+ break;
+ }
+ }
+
if (output_format & DIFF_FORMAT_PATCH) {
if (separator) {
putc(options->line_termination, options->file);
diff_free_filepair(q->queue[i]);
free_queue:
free(q->queue);
- q->queue = NULL;
- q->nr = q->alloc = 0;
+ DIFF_QUEUE_CLEAR(q);
if (options->close_file)
fclose(options->file);
+
+ /*
+ * Report the content-level differences with HAS_CHANGES;
+ * diff_addremove/diff_change does not set the bit when
+ * DIFF_FROM_CONTENTS is in effect (e.g. with -w).
+ */
+ if (DIFF_OPT_TST(options, DIFF_FROM_CONTENTS)) {
+ if (options->found_changes)
+ DIFF_OPT_SET(options, HAS_CHANGES);
+ else
+ DIFF_OPT_CLR(options, HAS_CHANGES);
+ }
}
static void diffcore_apply_filter(const char *filter)
int i;
struct diff_queue_struct *q = &diff_queued_diff;
struct diff_queue_struct outq;
- outq.queue = NULL;
- outq.nr = outq.alloc = 0;
+ DIFF_QUEUE_CLEAR(&outq);
if (!filter)
return;
int i;
struct diff_queue_struct *q = &diff_queued_diff;
struct diff_queue_struct outq;
- outq.queue = NULL;
- outq.nr = outq.alloc = 0;
+ DIFF_QUEUE_CLEAR(&outq);
for (i = 0; i < q->nr; i++) {
struct diff_filepair *p = q->queue[i];
/*
- * 1. Entries that come from stat info dirtyness
+ * 1. Entries that come from stat info dirtiness
* always have both sides (iow, not create/delete),
* one side of the object name is unknown, with
* the same mode and size. Keep the ones that
*q = outq;
}
-void diffcore_std(struct diff_options *options)
+static int diffnamecmp(const void *a_, const void *b_)
{
- if (DIFF_OPT_TST(options, QUIET))
- return;
+ const struct diff_filepair *a = *((const struct diff_filepair **)a_);
+ const struct diff_filepair *b = *((const struct diff_filepair **)b_);
+ const char *name_a, *name_b;
- if (options->skip_stat_unmatch && !DIFF_OPT_TST(options, FIND_COPIES_HARDER))
+ name_a = a->one ? a->one->path : a->two->path;
+ name_b = b->one ? b->one->path : b->two->path;
+ return strcmp(name_a, name_b);
+}
+
+void diffcore_fix_diff_index(struct diff_options *options)
+{
+ struct diff_queue_struct *q = &diff_queued_diff;
+ qsort(q->queue, q->nr, sizeof(q->queue[0]), diffnamecmp);
+}
+
+void diffcore_std(struct diff_options *options)
+{
+ if (options->skip_stat_unmatch)
diffcore_skip_stat_unmatch(options);
- if (options->break_opt != -1)
- diffcore_break(options->break_opt);
- if (options->detect_rename)
- diffcore_rename(options);
- if (options->break_opt != -1)
- diffcore_merge_broken();
+ if (!options->found_follow) {
+ /* See try_to_follow_renames() in tree-diff.c */
+ if (options->break_opt != -1)
+ diffcore_break(options->break_opt);
+ if (options->detect_rename)
+ diffcore_rename(options);
+ if (options->break_opt != -1)
+ diffcore_merge_broken();
+ }
if (options->pickaxe)
- diffcore_pickaxe(options->pickaxe, options->pickaxe_opts);
+ diffcore_pickaxe(options);
if (options->orderfile)
diffcore_order(options->orderfile);
- diff_resolve_rename_copy();
+ if (!options->found_follow)
+ /* See try_to_follow_renames() in tree-diff.c */
+ diff_resolve_rename_copy();
diffcore_apply_filter(options->filter);
- if (diff_queued_diff.nr)
+ if (diff_queued_diff.nr && !DIFF_OPT_TST(options, DIFF_FROM_CONTENTS))
DIFF_OPT_SET(options, HAS_CHANGES);
else
DIFF_OPT_CLR(options, HAS_CHANGES);
+
+ options->found_follow = 0;
}
int diff_result_code(struct diff_options *opt, int status)
{
int result = 0;
+
+ diff_warn_rename_limit("diff.renamelimit",
+ opt->needed_rename_limit,
+ opt->degraded_cc_to_c);
if (!DIFF_OPT_TST(opt, EXIT_WITH_STATUS) &&
!(opt->output_format & DIFF_FORMAT_CHECKDIFF))
return status;
return result;
}
+int diff_can_quit_early(struct diff_options *opt)
+{
+ return (DIFF_OPT_TST(opt, QUICK) &&
+ !opt->filter &&
+ DIFF_OPT_TST(opt, HAS_CHANGES));
+}
+
+/*
+ * Shall changes to this submodule be ignored?
+ *
+ * Submodule changes can be configured to be ignored separately for each path,
+ * but that configuration can be overridden from the command line.
+ */
+static int is_submodule_ignored(const char *path, struct diff_options *options)
+{
+ int ignored = 0;
+ unsigned orig_flags = options->flags;
+ if (!DIFF_OPT_TST(options, OVERRIDE_SUBMODULE_CONFIG))
+ set_diffopt_flags_from_submodule_config(options, path);
+ if (DIFF_OPT_TST(options, IGNORE_SUBMODULES))
+ ignored = 1;
+ options->flags = orig_flags;
+ return ignored;
+}
+
void diff_addremove(struct diff_options *options,
int addremove, unsigned mode,
const unsigned char *sha1,
- const char *concatpath)
+ const char *concatpath, unsigned dirty_submodule)
{
struct diff_filespec *one, *two;
- if (DIFF_OPT_TST(options, IGNORE_SUBMODULES) && S_ISGITLINK(mode))
+ if (S_ISGITLINK(mode) && is_submodule_ignored(concatpath, options))
return;
/* This may look odd, but it is a preparation for
if (addremove != '+')
fill_filespec(one, sha1, mode);
- if (addremove != '-')
+ if (addremove != '-') {
fill_filespec(two, sha1, mode);
+ two->dirty_submodule = dirty_submodule;
+ }
diff_queue(&diff_queued_diff, one, two);
- DIFF_OPT_SET(options, HAS_CHANGES);
+ if (!DIFF_OPT_TST(options, DIFF_FROM_CONTENTS))
+ DIFF_OPT_SET(options, HAS_CHANGES);
}
void diff_change(struct diff_options *options,
unsigned old_mode, unsigned new_mode,
const unsigned char *old_sha1,
const unsigned char *new_sha1,
- const char *concatpath)
+ const char *concatpath,
+ unsigned old_dirty_submodule, unsigned new_dirty_submodule)
{
struct diff_filespec *one, *two;
- if (DIFF_OPT_TST(options, IGNORE_SUBMODULES) && S_ISGITLINK(old_mode)
- && S_ISGITLINK(new_mode))
+ if (S_ISGITLINK(old_mode) && S_ISGITLINK(new_mode) &&
+ is_submodule_ignored(concatpath, options))
return;
if (DIFF_OPT_TST(options, REVERSE_DIFF)) {
const unsigned char *tmp_c;
tmp = old_mode; old_mode = new_mode; new_mode = tmp;
tmp_c = old_sha1; old_sha1 = new_sha1; new_sha1 = tmp_c;
+ tmp = old_dirty_submodule; old_dirty_submodule = new_dirty_submodule;
+ new_dirty_submodule = tmp;
}
if (options->prefix &&
two = alloc_filespec(concatpath);
fill_filespec(one, old_sha1, old_mode);
fill_filespec(two, new_sha1, new_mode);
+ one->dirty_submodule = old_dirty_submodule;
+ two->dirty_submodule = new_dirty_submodule;
diff_queue(&diff_queued_diff, one, two);
- DIFF_OPT_SET(options, HAS_CHANGES);
+ if (!DIFF_OPT_TST(options, DIFF_FROM_CONTENTS))
+ DIFF_OPT_SET(options, HAS_CHANGES);
}
-void diff_unmerge(struct diff_options *options,
- const char *path,
- unsigned mode, const unsigned char *sha1)
+struct diff_filepair *diff_unmerge(struct diff_options *options, const char *path)
{
+ struct diff_filepair *pair;
struct diff_filespec *one, *two;
if (options->prefix &&
strncmp(path, options->prefix, options->prefix_length))
- return;
+ return NULL;
one = alloc_filespec(path);
two = alloc_filespec(path);
- fill_filespec(one, sha1, mode);
- diff_queue(&diff_queued_diff, one, two)->is_unmerged = 1;
+ pair = diff_queue(&diff_queued_diff, one, two);
+ pair->is_unmerged = 1;
+ return pair;
+}
+
+static char *run_textconv(const char *pgm, struct diff_filespec *spec,
+ size_t *outsize)
+{
+ struct diff_tempfile *temp;
+ const char *argv[3];
+ const char **arg = argv;
+ struct child_process child;
+ struct strbuf buf = STRBUF_INIT;
+ int err = 0;
+
+ temp = prepare_temp_file(spec->path, spec);
+ *arg++ = pgm;
+ *arg++ = temp->name;
+ *arg = NULL;
+
+ memset(&child, 0, sizeof(child));
+ child.use_shell = 1;
+ child.argv = argv;
+ child.out = -1;
+ if (start_command(&child)) {
+ remove_tempfile();
+ return NULL;
+ }
+
+ if (strbuf_read(&buf, child.out, 0) < 0)
+ err = error("error reading from textconv command '%s'", pgm);
+ close(child.out);
+
+ if (finish_command(&child) || err) {
+ strbuf_release(&buf);
+ remove_tempfile();
+ return NULL;
+ }
+ remove_tempfile();
+
+ return strbuf_detach(&buf, outsize);
+}
+
+size_t fill_textconv(struct userdiff_driver *driver,
+ struct diff_filespec *df,
+ char **outbuf)
+{
+ size_t size;
+
+ if (!driver || !driver->textconv) {
+ if (!DIFF_FILE_VALID(df)) {
+ *outbuf = "";
+ return 0;
+ }
+ if (diff_populate_filespec(df, 0))
+ die("unable to read files to diff");
+ *outbuf = df->data;
+ return df->size;
+ }
+
+ if (driver->textconv_cache && df->sha1_valid) {
+ *outbuf = notes_cache_get(driver->textconv_cache, df->sha1,
+ &size);
+ if (*outbuf)
+ return size;
+ }
+
+ *outbuf = run_textconv(driver->textconv, df, &size);
+ if (!*outbuf)
+ die("unable to read files to diff");
+
+ if (driver->textconv_cache && df->sha1_valid) {
+ /* ignore errors, as we might be in a readonly repository */
+ notes_cache_put(driver->textconv_cache, df->sha1, *outbuf,
+ size);
+ /*
+ * we could save up changes and flush them all at the end,
+ * but we would need an extra call after all diffing is done.
+ * Since generating a cache entry is the slow path anyway,
+ * this extra overhead probably isn't a big deal.
+ */
+ notes_cache_write(driver->textconv_cache);
+ }
+
+ return size;
}