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git-apply: make the diffstat output happen for "--stat" only. 

Slowly this is takign the form of a program that we'd actually
use. Now "git-apply --stat" basically ends up being a perfectly
useful diffstat.
This commit is contained in:
Linus Torvalds 2005-05-26 12:25:52 -07:00
parent 3f40315aaa
commit fab2c257be
1 changed files with 67 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

94
apply.c
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@ -19,6 +19,8 @@
// We default to the merge behaviour, since that's what most people would
// expect
static int merge_patch = 1;
static int diffstat = 0;
static int check = 1;
static const char apply_usage[] = "git-apply <patch>";
/*
@ -384,9 +386,19 @@ static int parse_git_header(char *line, int len, unsigned int size, struct patch
return offset;
}
static int parse_num(const char *line, int len, int offset, const char *expect, unsigned long *p)
static int parse_num(const char *line, unsigned long *p)
{
char *ptr;
if (!isdigit(*line))
return 0;
*p = strtoul(line, &ptr, 10);
return ptr - line;
}
static int parse_range(const char *line, int len, int offset, const char *expect,
unsigned long *p1, unsigned long *p2)
{
int digits, ex;
if (offset < 0 || offset >= len)
@ -394,16 +406,25 @@ static int parse_num(const char *line, int len, int offset, const char *expect,
line += offset;
len -= offset;
if (!isdigit(*line))
digits = parse_num(line, p1);
if (!digits)
return -1;
*p = strtoul(line, &ptr, 10);
digits = ptr - line;
offset += digits;
line += digits;
len -= digits;
*p2 = *p1;
if (*line == ',') {
digits = parse_num(line+1, p2);
if (!digits)
return -1;
offset += digits+1;
line += digits+1;
len -= digits+1;
}
ex = strlen(expect);
if (ex > len)
return -1;
@ -425,10 +446,8 @@ static int parse_fragment_header(char *line, int len, struct fragment *fragment)
return -1;
/* Figure out the number of lines in a fragment */
offset = parse_num(line, len, 4, ",", &fragment->oldpos);
offset = parse_num(line, len, offset, " +", &fragment->oldlines);
offset = parse_num(line, len, offset, ",", &fragment->newpos);
offset = parse_num(line, len, offset, " @@", &fragment->newlines);
offset = parse_range(line, len, 4, " +", &fragment->oldpos, &fragment->oldlines);
offset = parse_range(line, len, offset, " @@", &fragment->newpos, &fragment->newlines);
return offset;
}
@ -552,6 +571,9 @@ static int parse_fragment(char *line, unsigned long size, struct patch *patch, s
added++;
newlines--;
break;
/* We allow "\ No newline at end of file" */
case '\\':
break;
}
}
patch->lines_added += added;
@ -608,8 +630,11 @@ static void show_stats(struct patch *patch)
char *name = patch->old_name;
int len, max, add, del;
if (!name)
if (!name) {
name = patch->new_name;
if (!name)
return;
}
/*
* "scale" the filename
@ -636,6 +661,23 @@ static void show_stats(struct patch *patch)
add, pluses, del, minuses);
}
static void check_patch(struct patch *patch)
{
const char *old_name = patch->old_name;
const char *new_name = patch->new_name;
if (old_name) {
if (cache_name_pos(old_name, strlen(old_name)) < 0)
die("file %s does not exist", old_name);
if (patch->is_new < 0)
patch->is_new = 0;
}
if (new_name && (patch->is_new | patch->is_rename | patch->is_copy)) {
if (cache_name_pos(new_name, strlen(new_name)) >= 0)
die("file %s already exists", new_name);
}
}
static void apply_patch_list(struct patch *patch)
{
int files, adds, dels;
@ -644,26 +686,19 @@ static void apply_patch_list(struct patch *patch)
if (!patch)
die("no patch found");
do {
const char *old_name = patch->old_name;
const char *new_name = patch->new_name;
if (check)
check_patch(patch);
if (old_name) {
if (cache_name_pos(old_name, strlen(old_name)) < 0)
die("file %s does not exist", old_name);
if (patch->is_new < 0)
patch->is_new = 0;
if (diffstat) {
files++;
adds += patch->lines_added;
dels += patch->lines_deleted;
show_stats(patch);
}
if (new_name && (patch->is_new | patch->is_rename | patch->is_copy)) {
if (cache_name_pos(new_name, strlen(new_name)) >= 0)
die("file %s already exists", new_name);
}
files++;
adds += patch->lines_added;
dels += patch->lines_deleted;
show_stats(patch);
} while ((patch = patch->next) != NULL);
printf(" %d files changed, %d insertions(+), %d deletions(-)\n", files, adds, dels);
if (diffstat)
printf(" %d files changed, %d insertions(+), %d deletions(-)\n", files, adds, dels);
}
static void patch_stats(struct patch *patch)
@ -736,6 +771,11 @@ int main(int argc, char **argv)
merge_patch = 0;
continue;
}
if (!strcmp(arg, "--stat")) {
check = 0;
diffstat = 1;
continue;
}
fd = open(arg, O_RDONLY);
if (fd < 0)
usage(apply_usage);