[PATCH] git-apply: implement --summary option.
Typical expected usage is "git-apply --stat --summary" to show
diffstat plus dense description of information available in git
extended headers, such as creations, renames, and mode changes.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/apply.c b/apply.c
index 53a9bb6..31f134c 100644
--- a/apply.c
+++ b/apply.c
@@ -28,10 +28,11 @@
static int check_index = 0;
static int write_index = 0;
static int diffstat = 0;
+static int summary = 0;
static int check = 0;
static int apply = 1;
static int show_files = 0;
-static const char apply_usage[] = "git-apply [--stat] [--check] [--show-files] <patch>";
+static const char apply_usage[] = "git-apply [--stat] [--summary] [--check] [--show-files] <patch>";
/*
* For "diff-stat" like behaviour, we keep track of the biggest change
@@ -60,6 +61,7 @@
unsigned int old_mode, new_mode;
int is_rename, is_copy, is_new, is_delete;
int lines_added, lines_deleted;
+ int score;
struct fragment *fragments;
char *result;
unsigned long resultsize;
@@ -329,11 +331,15 @@
static int gitdiff_similarity(const char *line, struct patch *patch)
{
+ if ((patch->score = strtoul(line, NULL, 10)) == ULONG_MAX)
+ patch->score = 0;
return 0;
}
static int gitdiff_dissimilarity(const char *line, struct patch *patch)
{
+ if ((patch->score = strtoul(line, NULL, 10)) == ULONG_MAX)
+ patch->score = 0;
return 0;
}
@@ -1093,6 +1099,84 @@
printf(" %d files changed, %d insertions(+), %d deletions(-)\n", files, adds, dels);
}
+static void show_file_mode_name(const char *newdelete, unsigned int mode, const char *name)
+{
+ if (mode)
+ printf(" %s mode %06o %s\n", newdelete, mode, name);
+ else
+ printf(" %s %s\n", newdelete, name);
+}
+
+static void show_mode_change(struct patch *p, int show_name)
+{
+ if (p->old_mode && p->new_mode && p->old_mode != p->new_mode) {
+ if (show_name)
+ printf(" mode change %06o => %06o %s\n",
+ p->old_mode, p->new_mode, p->new_name);
+ else
+ printf(" mode change %06o => %06o\n",
+ p->old_mode, p->new_mode);
+ }
+}
+
+static void show_rename_copy(struct patch *p)
+{
+ const char *renamecopy = p->is_rename ? "rename" : "copy";
+ const char *old, *new;
+
+ /* Find common prefix */
+ old = p->old_name;
+ new = p->new_name;
+ while (1) {
+ const char *slash_old, *slash_new;
+ slash_old = strchr(old, '/');
+ slash_new = strchr(new, '/');
+ if (!slash_old ||
+ !slash_new ||
+ slash_old - old != slash_new - new ||
+ memcmp(old, new, slash_new - new))
+ break;
+ old = slash_old + 1;
+ new = slash_new + 1;
+ }
+ /* p->old_name thru old is the common prefix, and old and new
+ * through the end of names are renames
+ */
+ if (old != p->old_name)
+ printf(" %s %.*s{%s => %s} (%d%%)\n", renamecopy,
+ old - p->old_name, p->old_name,
+ old, new, p->score);
+ else
+ printf(" %s %s => %s (%d%%)\n", renamecopy,
+ p->old_name, p->new_name, p->score);
+ show_mode_change(p, 0);
+}
+
+static void summary_patch_list(struct patch *patch)
+{
+ struct patch *p;
+
+ for (p = patch; p; p = p->next) {
+ if (p->is_new)
+ show_file_mode_name("create", p->new_mode, p->new_name);
+ else if (p->is_delete)
+ show_file_mode_name("delete", p->old_mode, p->old_name);
+ else {
+ if (p->is_rename || p->is_copy)
+ show_rename_copy(p);
+ else {
+ if (p->score) {
+ printf(" rewrite %s (%d%%)\n",
+ p->new_name, p->score);
+ show_mode_change(p, 0);
+ }
+ else
+ show_mode_change(p, 1);
+ }
+ }
+ }
+}
+
static void patch_stats(struct patch *patch)
{
int lines = patch->lines_added + patch->lines_deleted;
@@ -1306,6 +1390,9 @@
if (diffstat)
stat_patch_list(list);
+ if (summary)
+ summary_patch_list(list);
+
free(buffer);
return 0;
}
@@ -1333,6 +1420,11 @@
diffstat = 1;
continue;
}
+ if (!strcmp(arg, "--summary")) {
+ apply = 0;
+ summary = 1;
+ continue;
+ }
if (!strcmp(arg, "--check")) {
apply = 0;
check = 1;
