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index 54698f511ae402d1051f059d926dc8682e097ba0..5dbc913a963eb3ed42d8b05aaf3c87d906931b04 100644 (file)
--- a/diff.c
+++ b/diff.c
static int use_size_cache;
+static int diff_detect_rename_default = 0;
static int diff_rename_limit_default = -1;
static int diff_use_color_default = 0;
-enum color_diff {
- DIFF_RESET = 0,
- DIFF_PLAIN = 1,
- DIFF_METAINFO = 2,
- DIFF_FRAGINFO = 3,
- DIFF_FILE_OLD = 4,
- DIFF_FILE_NEW = 5,
-};
-
-#define COLOR_NORMAL ""
-#define COLOR_BOLD "\033[1m"
-#define COLOR_DIM "\033[2m"
-#define COLOR_UL "\033[4m"
-#define COLOR_BLINK "\033[5m"
-#define COLOR_REVERSE "\033[7m"
-#define COLOR_RESET "\033[m"
-
-#define COLOR_BLACK "\033[30m"
-#define COLOR_RED "\033[31m"
-#define COLOR_GREEN "\033[32m"
-#define COLOR_YELLOW "\033[33m"
-#define COLOR_BLUE "\033[34m"
-#define COLOR_MAGENTA "\033[35m"
-#define COLOR_CYAN "\033[36m"
-#define COLOR_WHITE "\033[37m"
-
-static const char *diff_colors[] = {
- [DIFF_RESET] = COLOR_RESET,
- [DIFF_PLAIN] = COLOR_NORMAL,
- [DIFF_METAINFO] = COLOR_BOLD,
- [DIFF_FRAGINFO] = COLOR_CYAN,
- [DIFF_FILE_OLD] = COLOR_RED,
- [DIFF_FILE_NEW] = COLOR_GREEN,
+/* "\033[1;38;5;2xx;48;5;2xxm\0" is 23 bytes */
+static char diff_colors[][24] = {
+ "\033[m", /* reset */
+ "", /* normal */
+ "\033[1m", /* bold */
+ "\033[36m", /* cyan */
+ "\033[31m", /* red */
+ "\033[32m", /* green */
+ "\033[33m" /* yellow */
};
static int parse_diff_color_slot(const char *var, int ofs)
return DIFF_FILE_OLD;
if (!strcasecmp(var+ofs, "new"))
return DIFF_FILE_NEW;
+ if (!strcasecmp(var+ofs, "commit"))
+ return DIFF_COMMIT;
die("bad config variable '%s'", var);
}
-static const char *parse_diff_color_value(const char *value, const char *var)
-{
- if (!strcasecmp(value, "normal"))
- return COLOR_NORMAL;
- if (!strcasecmp(value, "bold"))
- return COLOR_BOLD;
- if (!strcasecmp(value, "dim"))
- return COLOR_DIM;
- if (!strcasecmp(value, "ul"))
- return COLOR_UL;
- if (!strcasecmp(value, "blink"))
- return COLOR_BLINK;
- if (!strcasecmp(value, "reverse"))
- return COLOR_REVERSE;
- if (!strcasecmp(value, "reset"))
- return COLOR_RESET;
- if (!strcasecmp(value, "black"))
- return COLOR_BLACK;
- if (!strcasecmp(value, "red"))
- return COLOR_RED;
- if (!strcasecmp(value, "green"))
- return COLOR_GREEN;
- if (!strcasecmp(value, "yellow"))
- return COLOR_YELLOW;
- if (!strcasecmp(value, "blue"))
- return COLOR_BLUE;
- if (!strcasecmp(value, "magenta"))
- return COLOR_MAGENTA;
- if (!strcasecmp(value, "cyan"))
- return COLOR_CYAN;
- if (!strcasecmp(value, "white"))
- return COLOR_WHITE;
+static int parse_color(const char *name, int len)
+{
+ static const char * const color_names[] = {
+ "normal", "black", "red", "green", "yellow",
+ "blue", "magenta", "cyan", "white"
+ };
+ char *end;
+ int i;
+ for (i = 0; i < ARRAY_SIZE(color_names); i++) {
+ const char *str = color_names[i];
+ if (!strncasecmp(name, str, len) && !str[len])
+ return i - 1;
+ }
+ i = strtol(name, &end, 10);
+ if (*name && !*end && i >= -1 && i <= 255)
+ return i;
+ return -2;
+}
+
+static int parse_attr(const char *name, int len)
+{
+ static const int attr_values[] = { 1, 2, 4, 5, 7 };
+ static const char * const attr_names[] = {
+ "bold", "dim", "ul", "blink", "reverse"
+ };
+ int i;
+ for (i = 0; i < ARRAY_SIZE(attr_names); i++) {
+ const char *str = attr_names[i];
+ if (!strncasecmp(name, str, len) && !str[len])
+ return attr_values[i];
+ }
+ return -1;
+}
+
+static void parse_diff_color_value(const char *value, const char *var, char *dst)
+{
+ const char *ptr = value;
+ int attr = -1;
+ int fg = -2;
+ int bg = -2;
+
+ if (!strcasecmp(value, "reset")) {
+ strcpy(dst, "\033[m");
+ return;
+ }
+
+ /* [fg [bg]] [attr] */
+ while (*ptr) {
+ const char *word = ptr;
+ int val, len = 0;
+
+ while (word[len] && !isspace(word[len]))
+ len++;
+
+ ptr = word + len;
+ while (*ptr && isspace(*ptr))
+ ptr++;
+
+ val = parse_color(word, len);
+ if (val >= -1) {
+ if (fg == -2) {
+ fg = val;
+ continue;
+ }
+ if (bg == -2) {
+ bg = val;
+ continue;
+ }
+ goto bad;
+ }
+ val = parse_attr(word, len);
+ if (val < 0 || attr != -1)
+ goto bad;
+ attr = val;
+ }
+
+ if (attr >= 0 || fg >= 0 || bg >= 0) {
+ int sep = 0;
+
+ *dst++ = '\033';
+ *dst++ = '[';
+ if (attr >= 0) {
+ *dst++ = '0' + attr;
+ sep++;
+ }
+ if (fg >= 0) {
+ if (sep++)
+ *dst++ = ';';
+ if (fg < 8) {
+ *dst++ = '3';
+ *dst++ = '0' + fg;
+ } else {
+ dst += sprintf(dst, "38;5;%d", fg);
+ }
+ }
+ if (bg >= 0) {
+ if (sep++)
+ *dst++ = ';';
+ if (bg < 8) {
+ *dst++ = '4';
+ *dst++ = '0' + bg;
+ } else {
+ dst += sprintf(dst, "48;5;%d", bg);
+ }
+ }
+ *dst++ = 'm';
+ }
+ *dst = 0;
+ return;
+bad:
die("bad config value '%s' for variable '%s'", value, var);
}
-int git_diff_config(const char *var, const char *value)
+/*
+ * These are to give UI layer defaults.
+ * The core-level commands such as git-diff-files should
+ * never be affected by the setting of diff.renames
+ * the user happens to have in the configuration file.
+ */
+int git_diff_ui_config(const char *var, const char *value)
{
if (!strcmp(var, "diff.renamelimit")) {
diff_rename_limit_default = git_config_int(var, value);
if (!strcmp(var, "diff.color")) {
if (!value)
diff_use_color_default = 1; /* bool */
- else if (!strcasecmp(value, "auto"))
- diff_use_color_default = isatty(1);
+ else if (!strcasecmp(value, "auto")) {
+ diff_use_color_default = 0;
+ if (isatty(1) || (pager_in_use && pager_use_color)) {
+ char *term = getenv("TERM");
+ if (term && strcmp(term, "dumb"))
+ diff_use_color_default = 1;
+ }
+ }
else if (!strcasecmp(value, "never"))
diff_use_color_default = 0;
else if (!strcasecmp(value, "always"))
diff_use_color_default = git_config_bool(var, value);
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;
+ return 0;
+ }
if (!strncmp(var, "diff.color.", 11)) {
int slot = parse_diff_color_slot(var, 11);
- diff_colors[slot] = parse_diff_color_value(value, var);
+ parse_diff_color_value(value, var, diff_colors[slot]);
return 0;
}
return git_default_config(var, value);
diff_populate_filespec(two, 0);
lc_a = count_lines(one->data, one->size);
lc_b = count_lines(two->data, two->size);
- printf("--- %s\n+++ %s\n@@ -", name_a, name_b);
+ printf("--- a/%s\n+++ b/%s\n@@ -", name_a, name_b);
print_line_count(lc_a);
printf(" +");
print_line_count(lc_b);
const char **label_path;
};
-static inline const char *get_color(int diff_use_color, enum color_diff ix)
+const char *diff_get_color(int diff_use_color, enum color_diff ix)
{
if (diff_use_color)
return diff_colors[ix];
{
int i;
struct emit_callback *ecbdata = priv;
- const char *set = get_color(ecbdata->color_diff, DIFF_METAINFO);
- const char *reset = get_color(ecbdata->color_diff, DIFF_RESET);
+ const char *set = diff_get_color(ecbdata->color_diff, DIFF_METAINFO);
+ const char *reset = diff_get_color(ecbdata->color_diff, DIFF_RESET);
if (ecbdata->label_path[0]) {
printf("%s--- %s%s\n", set, ecbdata->label_path[0], reset);
;
if (2 <= i && i < len && line[i] == ' ') {
ecbdata->nparents = i - 1;
- set = get_color(ecbdata->color_diff, DIFF_FRAGINFO);
+ set = diff_get_color(ecbdata->color_diff, DIFF_FRAGINFO);
}
else if (len < ecbdata->nparents)
set = reset;
else if (line[i] == '+')
color = DIFF_FILE_NEW;
}
- set = get_color(ecbdata->color_diff, color);
+ set = diff_get_color(ecbdata->color_diff, color);
}
if (len > 0 && line[len-1] == '\n')
len--;
- printf("%s%.*s%s\n", set, (int) len, line, reset);
+ fputs (set, stdout);
+ fwrite (line, len, 1, stdout);
+ puts (reset);
}
static char *pprint_rename(const char *a, const char *b)
z_stream stream;
memset(&stream, 0, sizeof(stream));
- deflateInit(&stream, Z_BEST_COMPRESSION);
+ deflateInit(&stream, zlib_compression_level);
bound = deflateBound(&stream, size);
deflated = xmalloc(bound);
stream.next_out = deflated;
mmfile_t mf1, mf2;
const char *lbl[2];
char *a_one, *b_two;
- const char *set = get_color(o->color_diff, DIFF_METAINFO);
- const char *reset = get_color(o->color_diff, DIFF_RESET);
+ const char *set = diff_get_color(o->color_diff, DIFF_METAINFO);
+ const char *reset = diff_get_color(o->color_diff, DIFF_RESET);
a_one = quote_two("a/", name_a);
b_two = quote_two("b/", name_b);
if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0)
die("unable to read files to diff");
- if (mmfile_is_binary(&mf1) || mmfile_is_binary(&mf2)) {
+ if (!o->text && (mmfile_is_binary(&mf1) || mmfile_is_binary(&mf2))) {
/* Quite common confusing case */
if (mf1.size == mf2.size &&
!memcmp(mf1.ptr, mf2.ptr, mf1.size))
options->break_opt = -1;
options->rename_limit = -1;
options->context = 3;
- options->msg_sep = "\n";
+ options->msg_sep = "";
options->change = diff_change;
options->add_remove = diff_addremove;
options->color_diff = diff_use_color_default;
+ options->detect_rename = diff_detect_rename_default;
}
int diff_setup_done(struct diff_options *options)
{
- if ((options->find_copies_harder &&
- options->detect_rename != DIFF_DETECT_COPY) ||
- (0 <= options->rename_limit && !options->detect_rename))
- return -1;
-
- if (options->output_format & DIFF_FORMAT_NO_OUTPUT)
- options->output_format = 0;
+ if (options->find_copies_harder)
+ options->detect_rename = DIFF_DETECT_COPY;
if (options->output_format & (DIFF_FORMAT_NAME |
DIFF_FORMAT_NAME_STATUS |
DIFF_FORMAT_DIFFSTAT |
DIFF_FORMAT_CHECKDIFF))
options->recursive = 1;
+ /*
+ * Also pickaxe would not work very well if you do not say recursive
+ */
+ if (options->pickaxe)
+ options->recursive = 1;
if (options->detect_rename && options->rename_limit < 0)
options->rename_limit = diff_rename_limit_default;
options->output_format |= DIFF_FORMAT_PATCH;
options->full_index = options->binary = 1;
}
+ else if (!strcmp(arg, "-a") || !strcmp(arg, "--text")) {
+ options->text = 1;
+ }
else if (!strcmp(arg, "--name-only"))
options->output_format |= DIFF_FORMAT_NAME;
else if (!strcmp(arg, "--name-status"))
}
else if (!strcmp(arg, "--color"))
options->color_diff = 1;
+ else if (!strcmp(arg, "--no-color"))
+ options->color_diff = 0;
else if (!strcmp(arg, "-w") || !strcmp(arg, "--ignore-all-space"))
options->xdl_opts |= XDF_IGNORE_WHITESPACE;
else if (!strcmp(arg, "-b") || !strcmp(arg, "--ignore-space-change"))
options->xdl_opts |= XDF_IGNORE_WHITESPACE_CHANGE;
+ else if (!strcmp(arg, "--no-renames"))
+ options->detect_rename = 0;
else
return 0;
return 1;
struct diff_filespec *one,
struct diff_filespec *two)
{
- struct diff_filepair *dp = xmalloc(sizeof(*dp));
+ struct diff_filepair *dp = xcalloc(1, sizeof(*dp));
dp->one = one;
dp->two = two;
- dp->score = 0;
- dp->status = 0;
- dp->source_stays = 0;
- dp->broken_pair = 0;
if (queue)
diff_q(queue, dp);
return dp;
}
}
+struct patch_id_t {
+ struct xdiff_emit_state xm;
+ SHA_CTX *ctx;
+ int patchlen;
+};
+
+static int remove_space(char *line, int len)
+{
+ int i;
+ char *dst = line;
+ unsigned char c;
+
+ for (i = 0; i < len; i++)
+ if (!isspace((c = line[i])))
+ *dst++ = c;
+
+ return dst - line;
+}
+
+static void patch_id_consume(void *priv, char *line, unsigned long len)
+{
+ struct patch_id_t *data = priv;
+ int new_len;
+
+ /* Ignore line numbers when computing the SHA1 of the patch */
+ if (!strncmp(line, "@@ -", 4))
+ return;
+
+ new_len = remove_space(line, len);
+
+ SHA1_Update(data->ctx, line, new_len);
+ data->patchlen += new_len;
+}
+
+/* returns 0 upon success, and writes result into sha1 */
+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;
+ struct patch_id_t data;
+ char buffer[PATH_MAX * 4 + 20];
+
+ 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;
+
+ if (p->status == 0)
+ return error("internal diff status error");
+ if (p->status == DIFF_STATUS_UNKNOWN)
+ continue;
+ if (diff_unmodified_pair(p))
+ continue;
+ if ((DIFF_FILE_VALID(p->one) && S_ISDIR(p->one->mode)) ||
+ (DIFF_FILE_VALID(p->two) && S_ISDIR(p->two->mode)))
+ continue;
+ if (DIFF_PAIR_UNMERGED(p))
+ continue;
+
+ diff_fill_sha1_info(p->one);
+ diff_fill_sha1_info(p->two);
+ if (fill_mmfile(&mf1, p->one) < 0 ||
+ fill_mmfile(&mf2, p->two) < 0)
+ return error("unable to read files to diff");
+
+ /* Maybe hash p->two? into the patch id? */
+ if (mmfile_is_binary(&mf2))
+ continue;
+
+ len1 = remove_space(p->one->path, strlen(p->one->path));
+ len2 = remove_space(p->two->path, strlen(p->two->path));
+ if (p->one->mode == 0)
+ len1 = snprintf(buffer, sizeof(buffer),
+ "diff--gita/%.*sb/%.*s"
+ "newfilemode%06o"
+ "---/dev/null"
+ "+++b/%.*s",
+ len1, p->one->path,
+ len2, p->two->path,
+ p->two->mode,
+ len2, p->two->path);
+ else if (p->two->mode == 0)
+ len1 = snprintf(buffer, sizeof(buffer),
+ "diff--gita/%.*sb/%.*s"
+ "deletedfilemode%06o"
+ "---a/%.*s"
+ "+++/dev/null",
+ len1, p->one->path,
+ len2, p->two->path,
+ p->one->mode,
+ len1, p->one->path);
+ else
+ len1 = snprintf(buffer, sizeof(buffer),
+ "diff--gita/%.*sb/%.*s"
+ "---a/%.*s"
+ "+++b/%.*s",
+ len1, p->one->path,
+ len2, p->two->path,
+ len1, p->one->path,
+ len2, p->two->path);
+ SHA1_Update(&ctx, buffer, len1);
+
+ xpp.flags = XDF_NEED_MINIMAL;
+ xecfg.ctxlen = 3;
+ xecfg.flags = XDL_EMIT_FUNCNAMES;
+ ecb.outf = xdiff_outf;
+ ecb.priv = &data;
+ xdl_diff(&mf1, &mf2, &xpp, &xecfg, &ecb);
+ }
+
+ SHA1_Final(sha1, &ctx);
+ return 0;
+}
+
+int diff_flush_patch_id(struct diff_options *options, unsigned char *sha1)
+{
+ struct diff_queue_struct *q = &diff_queued_diff;
+ int i;
+ int result = diff_get_patch_id(options, sha1);
+
+ for (i = 0; i < q->nr; i++)
+ diff_free_filepair(q->queue[i]);
+
+ free(q->queue);
+ q->queue = NULL;
+ q->nr = q->alloc = 0;
+
+ return result;
+}
+
+static int is_summary_empty(const struct diff_queue_struct *q)
+{
+ int i;
+
+ for (i = 0; i < q->nr; i++) {
+ const struct diff_filepair *p = q->queue[i];
+
+ switch (p->status) {
+ case DIFF_STATUS_DELETED:
+ case DIFF_STATUS_ADDED:
+ case DIFF_STATUS_COPIED:
+ case DIFF_STATUS_RENAMED:
+ return 0;
+ default:
+ if (p->score)
+ return 0;
+ if (p->one->mode && p->two->mode &&
+ p->one->mode != p->two->mode)
+ return 0;
+ break;
+ }
+ }
+ return 1;
+}
+
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;
/*
* Order: raw, stat, summary, patch
* or: name/name-status/checkdiff (other bits clear)
*/
+ if (!q->nr)
+ goto free_queue;
if (output_format & (DIFF_FORMAT_RAW |
DIFF_FORMAT_NAME |
if (check_pair_status(p))
flush_one_pair(p, options);
}
+ separator++;
}
if (output_format & DIFF_FORMAT_DIFFSTAT) {
diff_flush_stat(p, options, &diffstat);
}
show_stats(&diffstat);
+ separator++;
}
- if (output_format & DIFF_FORMAT_SUMMARY) {
+ if (output_format & DIFF_FORMAT_SUMMARY && !is_summary_empty(q)) {
for (i = 0; i < q->nr; i++)
diff_summary(q->queue[i]);
+ separator++;
}
if (output_format & DIFF_FORMAT_PATCH) {
- if (output_format & (DIFF_FORMAT_DIFFSTAT |
- DIFF_FORMAT_SUMMARY)) {
- if (options->stat_sep)
+ if (separator) {
+ if (options->stat_sep) {
+ /* attach patch instead of inline */
fputs(options->stat_sep, stdout);
- else
+ } else {
putchar(options->line_termination);
+ }
}
for (i = 0; i < q->nr; i++) {
for (i = 0; i < q->nr; i++)
diff_free_filepair(q->queue[i]);
+free_queue:
free(q->queue);
q->queue = NULL;
q->nr = q->alloc = 0;