Commit 96c912a4 authored by Junio C Hamano's avatar Junio C Hamano Committed by Linus Torvalds

[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: default avatarJunio C Hamano <[email protected]>
Signed-off-by: default avatarLinus Torvalds <[email protected]>
parent 03b4538b
......@@ -28,10 +28,11 @@ static int merge_patch = 1;
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 @@ struct patch {
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_renamedst(const char *line, struct patch *patch)
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 @@ static void stat_patch_list(struct patch *patch)
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 @@ static int apply_patch(int fd)
if (diffstat)
stat_patch_list(list);
if (summary)
summary_patch_list(list);
free(buffer);
return 0;
}
......@@ -1333,6 +1420,11 @@ int main(int argc, char **argv)
diffstat = 1;
continue;
}
if (!strcmp(arg, "--summary")) {
apply = 0;
summary = 1;
continue;
}
if (!strcmp(arg, "--check")) {
apply = 0;
check = 1;
......
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