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index 4a908b28af90e02e4eca8319c1ac51bb788a27c1..db4bd557b75b46e64d71f7ce9565065269ac6355 100644 (file)
--- a/diff.c
+++ b/diff.c
#include "color.h"
#include "attr.h"
#include "run-command.h"
+#include "utf8.h"
#ifdef NO_FAST_WORKING_DIRECTORY
#define FAST_WORKING_DIRECTORY 0
char *cmd;
} *user_diff, **user_diff_tail;
-static void read_config_if_needed(void)
-{
- if (!user_diff_tail) {
- user_diff_tail = &user_diff;
- git_config(git_diff_ui_config);
- }
-}
-
/*
* Currently there is only "diff.<drivername>.command" variable;
* because there are "diff.color.<slot>" variables, we are parsing
}
}
+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;
@@ -533,12 +529,31 @@ static void emit_add_line(const char *reset, struct emit_callback *ecbdata, cons
}
}
+static unsigned long sane_truncate_line(struct emit_callback *ecb, char *line, unsigned long len)
+{
+ const char *cp;
+ unsigned long allot;
+ size_t l = len;
+
+ if (ecb->truncate)
+ return ecb->truncate(line, len);
+ cp = line;
+ allot = l;
+ while (0 < l) {
+ (void) utf8_width(&cp, &l);
+ if (!cp)
+ break; /* truncated in the middle? */
+ }
+ return allot - l;
+}
+
static void fn_out_consume(void *priv, char *line, unsigned long len)
{
int i;
int color;
struct emit_callback *ecbdata = priv;
- const char *set = diff_get_color(ecbdata->color_diff, DIFF_METAINFO);
+ 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);
*(ecbdata->found_changesp) = 1;
name_b_tab = strchr(ecbdata->label_path[1], ' ') ? "\t" : "";
printf("%s--- %s%s%s\n",
- set, ecbdata->label_path[0], reset, name_a_tab);
+ meta, ecbdata->label_path[0], reset, name_a_tab);
printf("%s+++ %s%s%s\n",
- set, ecbdata->label_path[1], reset, name_b_tab);
+ meta, ecbdata->label_path[1], reset, name_b_tab);
ecbdata->label_path[0] = ecbdata->label_path[1] = NULL;
}
;
if (2 <= i && i < len && line[i] == ' ') {
ecbdata->nparents = i - 1;
+ len = sane_truncate_line(ecbdata, line, len);
emit_line(diff_get_color(ecbdata->color_diff, DIFF_FRAGINFO),
reset, line, len);
+ if (line[len-1] != '\n')
+ putchar('\n');
return;
}
if (len < ecbdata->nparents) {
- set = reset;
emit_line(reset, reset, line, len);
return;
}
diff_words_show(ecbdata->diff_words);
line++;
len--;
- emit_line(set, reset, line, len);
+ emit_line(plain, reset, line, len);
return;
}
for (i = 0; i < ecbdata->nparents && len; i++) {
/*
* And define built-in fallback patterns here. Note that
- * these can be overriden by the user's config settings.
+ * 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))
}
static void builtin_checkdiff(const char *name_a, const char *name_b,
+ const char *attr_path,
struct diff_filespec *one,
struct diff_filespec *two, struct diff_options *o)
{
data.filename = name_b ? name_b : name_a;
data.lineno = 0;
data.color_diff = DIFF_OPT_TST(o, COLOR_DIFF);
- data.ws_rule = whitespace_rule(data.filename);
+ data.ws_rule = whitespace_rule(attr_path);
if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0)
die("unable to read files to diff");
{
struct git_attr_check attr_diff_check;
+ if (!name)
+ return NULL;
+
setup_diff_attr_check(&attr_diff_check);
if (!git_checkattr(name, 1, &attr_diff_check)) {
const char *value = attr_diff_check.value;
!ATTR_UNSET(value)) {
struct ll_diff_driver *drv;
- read_config_if_needed();
for (drv = user_diff; drv; drv = drv->next)
if (!strcmp(drv->name, value))
return drv->cmd;
static void run_diff_cmd(const char *pgm,
const char *name,
const char *other,
+ const char *attr_path,
struct diff_filespec *one,
struct diff_filespec *two,
const char *xfrm_msg,
if (!DIFF_OPT_TST(o, ALLOW_EXTERNAL))
pgm = NULL;
else {
- const char *cmd = external_diff_attr(name);
+ const char *cmd = external_diff_attr(attr_path);
if (cmd)
pgm = cmd;
}
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 != '/')
+ *namep += prefix_length;
+ if (*otherp && **otherp != '/')
+ *otherp += prefix_length;
+}
+
static void run_diff(struct diff_filepair *p, struct diff_options *o)
{
const char *pgm = external_diff();
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);
+ attr_path = name;
+ if (o->prefix_length)
+ strip_prefix(o->prefix_length, &name, &other);
if (DIFF_PAIR_UNMERGED(p)) {
- run_diff_cmd(pgm, p->one->path, NULL, NULL, NULL, NULL, o, 0);
+ run_diff_cmd(pgm, name, NULL, attr_path,
+ NULL, NULL, NULL, o, 0);
return;
}
- name = p->one->path;
- other = (strcmp(name, p->two->path) ? p->two->path : NULL);
diff_fill_sha1_info(one);
diff_fill_sha1_info(two);
* needs to be split into deletion and creation.
*/
struct diff_filespec *null = alloc_filespec(two->path);
- run_diff_cmd(NULL, name, other, one, null, xfrm_msg, o, 0);
+ run_diff_cmd(NULL, name, other, attr_path,
+ one, null, xfrm_msg, o, 0);
free(null);
null = alloc_filespec(one->path);
- run_diff_cmd(NULL, name, other, null, two, xfrm_msg, o, 0);
+ run_diff_cmd(NULL, name, other, attr_path,
+ null, two, xfrm_msg, o, 0);
free(null);
}
else
- run_diff_cmd(pgm, name, other, one, two, xfrm_msg, o,
- complete_rewrite);
+ run_diff_cmd(pgm, name, other, attr_path,
+ one, two, xfrm_msg, o, complete_rewrite);
strbuf_release(&msg);
}
name = p->one->path;
other = (strcmp(name, p->two->path) ? p->two->path : NULL);
+ if (o->prefix_length)
+ strip_prefix(o->prefix_length, &name, &other);
+
diff_fill_sha1_info(p->one);
diff_fill_sha1_info(p->two);
{
const char *name;
const char *other;
+ const char *attr_path;
if (DIFF_PAIR_UNMERGED(p)) {
/* unmerged */
name = p->one->path;
other = (strcmp(name, p->two->path) ? p->two->path : NULL);
+ attr_path = other ? other : name;
+
+ if (o->prefix_length)
+ strip_prefix(o->prefix_length, &name, &other);
diff_fill_sha1_info(p->one);
diff_fill_sha1_info(p->two);
- builtin_checkdiff(name, other, p->one, p->two, o);
+ builtin_checkdiff(name, other, attr_path, p->one, p->two, o);
}
void diff_setup(struct diff_options *options)
if (DIFF_OPT_TST(options, FIND_COPIES_HARDER))
options->detect_rename = DIFF_DETECT_COPY;
+ if (!DIFF_OPT_TST(options, RELATIVE_NAME))
+ options->prefix = NULL;
+ if (options->prefix)
+ options->prefix_length = strlen(options->prefix);
+ else
+ options->prefix_length = 0;
+
if (options->output_format & (DIFF_FORMAT_NAME |
DIFF_FORMAT_NAME_STATUS |
DIFF_FORMAT_CHECKDIFF |
}
else if (!strcmp(arg, "--no-renames"))
options->detect_rename = 0;
+ else if (!strcmp(arg, "--relative"))
+ DIFF_OPT_SET(options, RELATIVE_NAME);
/* xdiff options */
else if (!strcmp(arg, "-w") || !strcmp(arg, "--ignore-all-space"))
@@ -2459,12 +2513,20 @@ static void diff_flush_raw(struct diff_filepair *p, struct diff_options *opt)
printf("%c%c", p->status, inter_name_termination);
}
- if (p->status == DIFF_STATUS_COPIED || p->status == DIFF_STATUS_RENAMED) {
- write_name_quoted(p->one->path, stdout, inter_name_termination);
- write_name_quoted(p->two->path, stdout, line_termination);
+ if (p->status == DIFF_STATUS_COPIED ||
+ p->status == DIFF_STATUS_RENAMED) {
+ const char *name_a, *name_b;
+ name_a = p->one->path;
+ name_b = p->two->path;
+ strip_prefix(opt->prefix_length, &name_a, &name_b);
+ write_name_quoted(name_a, stdout, inter_name_termination);
+ write_name_quoted(name_b, stdout, line_termination);
} else {
- const char *path = p->one->mode ? p->one->path : p->two->path;
- write_name_quoted(path, stdout, line_termination);
+ const char *name_a, *name_b;
+ name_a = p->one->mode ? p->one->path : p->two->path;
+ name_b = NULL;
+ strip_prefix(opt->prefix_length, &name_a, &name_b);
+ write_name_quoted(name_a, stdout, line_termination);
}
}
@@ -2661,8 +2723,13 @@ static void flush_one_pair(struct diff_filepair *p, struct diff_options *opt)
diff_flush_checkdiff(p, opt);
else if (fmt & (DIFF_FORMAT_RAW | DIFF_FORMAT_NAME_STATUS))
diff_flush_raw(p, opt);
- else if (fmt & DIFF_FORMAT_NAME)
- write_name_quoted(p->two->path, stdout, opt->line_termination);
+ else if (fmt & DIFF_FORMAT_NAME) {
+ const char *name_a, *name_b;
+ name_a = p->two->path;
+ name_b = NULL;
+ strip_prefix(opt->prefix_length, &name_a, &name_b);
+ write_name_quoted(name_a, stdout, opt->line_termination);
+ }
}
static void show_file_mode_name(const char *newdelete, struct diff_filespec *fs)
if (!path) path = "";
sprintf(concatpath, "%s%s", base, path);
+
+ if (options->prefix &&
+ strncmp(concatpath, options->prefix, options->prefix_length))
+ return;
+
one = alloc_filespec(concatpath);
two = alloc_filespec(concatpath);
}
if (!path) path = "";
sprintf(concatpath, "%s%s", base, path);
+
+ if (options->prefix &&
+ strncmp(concatpath, options->prefix, options->prefix_length))
+ return;
+
one = alloc_filespec(concatpath);
two = alloc_filespec(concatpath);
fill_filespec(one, old_sha1, old_mode);
unsigned mode, const unsigned char *sha1)
{
struct diff_filespec *one, *two;
+
+ if (options->prefix &&
+ strncmp(path, options->prefix, options->prefix_length))
+ return;
+
one = alloc_filespec(path);
two = alloc_filespec(path);
fill_filespec(one, sha1, mode);