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index 90e0844108e7e8765cbe1b5f4d6620c1fe2db115..f14288bb8a100c43c6709f658b9a9ca44832fd7f 100644 (file)
--- a/diff.c
+++ b/diff.c
/*
* Copyright (C) 2005 Junio C Hamano
*/
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <signal.h>
#include "cache.h"
#include "quote.h"
#include "diff.h"
#include "xdiff-interface.h"
#include "color.h"
+#ifdef NO_FAST_WORKING_DIRECTORY
+#define FAST_WORKING_DIRECTORY 0
+#else
+#define FAST_WORKING_DIRECTORY 1
+#endif
+
static int use_size_cache;
static int diff_detect_rename_default;
static char diff_colors[][COLOR_MAXLEN] = {
"\033[m", /* reset */
- "", /* normal */
- "\033[1m", /* bold */
- "\033[36m", /* cyan */
- "\033[31m", /* red */
- "\033[32m", /* green */
- "\033[33m" /* yellow */
+ "", /* 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) */
};
static int parse_diff_color_slot(const char *var, int ofs)
return DIFF_FILE_NEW;
if (!strcasecmp(var+ofs, "commit"))
return DIFF_COMMIT;
+ if (!strcasecmp(var+ofs, "whitespace"))
+ return DIFF_WHITESPACE;
die("bad config variable '%s'", var);
}
diff_rename_limit_default = git_config_int(var, value);
return 0;
}
- if (!strcmp(var, "diff.color")) {
+ if (!strcmp(var, "diff.color") || !strcmp(var, "color.diff")) {
diff_use_color_default = git_config_colorbool(var, value);
return 0;
}
diff_detect_rename_default = DIFF_DETECT_RENAME;
return 0;
}
- if (!strncmp(var, "diff.color.", 11)) {
+ if (!strncmp(var, "diff.color.", 11) || !strncmp(var, "color.diff.", 11)) {
int slot = parse_diff_color_slot(var, 11);
color_parse(value, var, diff_colors[slot]);
return 0;
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);
return "";
}
+static void emit_line(const char *set, const char *reset, const char *line, int len)
+{
+ if (len > 0 && line[len-1] == '\n')
+ len--;
+ fputs(set, stdout);
+ fwrite(line, len, 1, stdout);
+ puts(reset);
+}
+
+static void emit_add_line(const char *reset, struct emit_callback *ecbdata, const char *line, int len)
+{
+ int col0 = ecbdata->nparents;
+ int last_tab_in_indent = -1;
+ int last_space_in_indent = -1;
+ int i;
+ int tail = len;
+ int need_highlight_leading_space = 0;
+ 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(set, reset, line, len);
+ return;
+ }
+
+ /* The line is a newly added line. Does it have funny leading
+ * whitespaces? In indent, SP should never precede a TAB.
+ */
+ for (i = col0; i < len; i++) {
+ if (line[i] == '\t') {
+ last_tab_in_indent = i;
+ if (0 <= last_space_in_indent)
+ need_highlight_leading_space = 1;
+ }
+ else if (line[i] == ' ')
+ last_space_in_indent = i;
+ else
+ break;
+ }
+ fputs(set, stdout);
+ fwrite(line, col0, 1, stdout);
+ fputs(reset, stdout);
+ if (((i == len) || line[i] == '\n') && i != col0) {
+ /* The whole line was indent */
+ emit_line(ws, reset, line + col0, len - col0);
+ return;
+ }
+ i = col0;
+ if (need_highlight_leading_space) {
+ while (i < last_tab_in_indent) {
+ if (line[i] == ' ') {
+ fputs(ws, stdout);
+ putchar(' ');
+ fputs(reset, stdout);
+ }
+ else
+ putchar(line[i]);
+ i++;
+ }
+ }
+ tail = len - 1;
+ if (line[tail] == '\n' && i < tail)
+ tail--;
+ while (i < tail) {
+ if (!isspace(line[tail]))
+ break;
+ tail--;
+ }
+ if ((i < tail && line[tail + 1] != '\n')) {
+ /* This has whitespace between tail+1..len */
+ fputs(set, stdout);
+ fwrite(line + i, tail - i + 1, 1, stdout);
+ fputs(reset, stdout);
+ emit_line(ws, reset, line + tail + 1, len - tail - 1);
+ }
+ else
+ emit_line(set, reset, line + i, len - i);
+}
+
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 *reset = diff_get_color(ecbdata->color_diff, DIFF_RESET);
;
if (2 <= i && i < len && line[i] == ' ') {
ecbdata->nparents = i - 1;
- set = diff_get_color(ecbdata->color_diff, DIFF_FRAGINFO);
+ emit_line(diff_get_color(ecbdata->color_diff, DIFF_FRAGINFO),
+ reset, line, len);
+ return;
}
- else if (len < ecbdata->nparents)
+
+ if (len < ecbdata->nparents) {
set = reset;
- else {
- int nparents = ecbdata->nparents;
- int color = DIFF_PLAIN;
- if (ecbdata->diff_words && 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->minus);
- return;
- } else 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--;
- } else
- for (i = 0; i < nparents && len; i++) {
- if (line[i] == '-')
- color = DIFF_FILE_OLD;
- else if (line[i] == '+')
- color = DIFF_FILE_NEW;
- }
- set = diff_get_color(ecbdata->color_diff, color);
+ emit_line(reset, reset, line, len);
+ return;
}
- if (len > 0 && line[len-1] == '\n')
+
+ 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->minus);
+ return;
+ } else 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--;
- fputs (set, stdout);
- fwrite (line, len, 1, stdout);
- puts (reset);
+ emit_line(set, 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(diff_get_color(ecbdata->color_diff, color),
+ reset, line, len);
+ return;
+ }
+ emit_add_line(reset, ecbdata, line, len);
}
static char *pprint_rename(const char *a, const char *b)
static int scale_linear(int it, int width, int max_change)
{
/*
- * round(width * it / max_change);
+ * make sure that at least one '-' is printed if there were deletions,
+ * and likewise for '+'.
*/
- return (it * width * 2 + max_change) / (max_change * 2);
+ if (max_change < 2)
+ return it;
+ return ((it - 1) * (width - 1) + max_change - 1) / (max_change - 1);
}
static void show_name(const char *prefix, const char *name, int len,
dels += del;
if (width <= max_change) {
- total = scale_linear(total, width, max_change);
add = scale_linear(add, width, max_change);
- del = total - add;
+ del = scale_linear(del, width, max_change);
+ total = add + del;
}
show_name(prefix, name, len, reset, set);
printf("%5d ", added + deleted);
set, total_files, adds, dels, reset);
}
+static void show_shortstats(struct diffstat_t* data)
+{
+ int i, adds = 0, dels = 0, total_files = data->nr;
+
+ if (data->nr == 0)
+ return;
+
+ for (i = 0; i < data->nr; i++) {
+ if (!data->files[i]->is_binary &&
+ !data->files[i]->is_unmerged) {
+ int added = data->files[i]->added;
+ int deleted= data->files[i]->deleted;
+ if (!data->files[i]->is_renamed &&
+ (added + deleted == 0)) {
+ total_files--;
+ } else {
+ adds += added;
+ dels += deleted;
+ }
+ }
+ free(data->files[i]->name);
+ free(data->files[i]);
+ }
+ free(data->files);
+
+ printf(" %d files changed, %d insertions(+), %d deletions(-)\n",
+ total_files, adds, dels);
+}
+
+static void show_numstat(struct diffstat_t* data, struct diff_options *options)
+{
+ int i;
+
+ for (i = 0; i < data->nr; i++) {
+ struct diffstat_file *file = data->files[i];
+
+ if (file->is_binary)
+ printf("-\t-\t");
+ else
+ printf("%d\t%d\t", file->added, file->deleted);
+ if (options->line_termination &&
+ quote_c_style(file->name, NULL, NULL, 0))
+ quote_c_style(file->name, NULL, stdout, 0);
+ else
+ fputs(file->name, stdout);
+ putchar(options->line_termination);
+ }
+}
+
struct checkdiff_t {
struct xdiff_emit_state xm;
const char *filename;
if (line[0] == '+') {
int i, spaces = 0;
- data->lineno++;
-
/* check space before tab */
for (i = 1; i < len && (line[i] == ' ' || line[i] == '\t'); i++)
if (line[i] == ' ')
if (isspace(line[len - 1]))
printf("%s:%d: white space at end: %.*s\n",
data->filename, data->lineno, (int)len, line);
+
+ data->lineno++;
} else if (line[0] == ' ')
data->lineno++;
else if (line[0] == '@') {
* the work tree has that object contents, return true, so that
* prepare_temp_file() does not have to inflate and extract.
*/
-static int work_tree_matches(const char *name, const unsigned char *sha1)
+static int reuse_worktree_file(const char *name, const unsigned char *sha1, int want_file)
{
struct cache_entry *ce;
struct stat st;
if (!active_cache)
return 0;
+ /* We want to avoid the working directory if our caller
+ * doesn't need the data in a normal file, this system
+ * is rather slow with its stat/open/mmap/close syscalls,
+ * and the object is contained in a pack file. The pack
+ * is probably already open and will be faster to obtain
+ * the data through than the working directory. Loose
+ * 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))
+ return 0;
+
len = strlen(name);
pos = cache_name_pos(name, len);
if (pos < 0)
if (s->data)
return err;
if (!s->sha1_valid ||
- work_tree_matches(s->path, s->sha1)) {
+ reuse_worktree_file(s->path, s->sha1, 0)) {
struct stat st;
int fd;
if (lstat(s->path, &st) < 0) {
}
if (!one->sha1_valid ||
- work_tree_matches(name, one->sha1)) {
+ reuse_worktree_file(name, one->sha1, 1)) {
struct stat st;
if (lstat(name, &st) < 0) {
if (errno == ENOENT)
DIFF_FORMAT_CHECKDIFF |
DIFF_FORMAT_NO_OUTPUT))
options->output_format &= ~(DIFF_FORMAT_RAW |
+ DIFF_FORMAT_NUMSTAT |
DIFF_FORMAT_DIFFSTAT |
+ DIFF_FORMAT_SHORTSTAT |
DIFF_FORMAT_SUMMARY |
DIFF_FORMAT_PATCH);
* recursive bits for other formats here.
*/
if (options->output_format & (DIFF_FORMAT_PATCH |
+ DIFF_FORMAT_NUMSTAT |
DIFF_FORMAT_DIFFSTAT |
+ DIFF_FORMAT_SHORTSTAT |
+ DIFF_FORMAT_SUMMARY |
DIFF_FORMAT_CHECKDIFF))
options->recursive = 1;
/*
else if (!strcmp(arg, "--patch-with-raw")) {
options->output_format |= DIFF_FORMAT_PATCH | DIFF_FORMAT_RAW;
}
+ else if (!strcmp(arg, "--numstat")) {
+ options->output_format |= DIFF_FORMAT_NUMSTAT;
+ }
+ else if (!strcmp(arg, "--shortstat")) {
+ options->output_format |= DIFF_FORMAT_SHORTSTAT;
+ }
else if (!strncmp(arg, "--stat", 6)) {
char *end;
int width = options->stat_width;
separator++;
}
- if (output_format & DIFF_FORMAT_DIFFSTAT) {
+ if (output_format & (DIFF_FORMAT_DIFFSTAT|DIFF_FORMAT_SHORTSTAT|DIFF_FORMAT_NUMSTAT)) {
struct diffstat_t diffstat;
memset(&diffstat, 0, sizeof(struct diffstat_t));
if (check_pair_status(p))
diff_flush_stat(p, options, &diffstat);
}
- show_stats(&diffstat, options);
+ if (output_format & DIFF_FORMAT_NUMSTAT)
+ show_numstat(&diffstat, options);
+ if (output_format & DIFF_FORMAT_DIFFSTAT)
+ show_stats(&diffstat, options);
+ else if (output_format & DIFF_FORMAT_SHORTSTAT)
+ show_shortstats(&diffstat);
separator++;
}