git-apply: implement "diffstat" output
Hey, it's almost free by now, and it's a good way to see that we parse the patches correctly.
This commit is contained in:
parent
19c58fb84d
commit
3f40315aaa
90
apply.c
90
apply.c
@ -21,6 +21,13 @@
|
||||
static int merge_patch = 1;
|
||||
static const char apply_usage[] = "git-apply <patch>";
|
||||
|
||||
/*
|
||||
* For "diff-stat" like behaviour, we keep track of the biggest change
|
||||
* we've seen, and the longest filename. That allows us to do simple
|
||||
* scaling.
|
||||
*/
|
||||
static int max_change, max_len;
|
||||
|
||||
/*
|
||||
* Various "current state", notably line numbers and what
|
||||
* file (and how) we're patching right now.. The "is_xxxx"
|
||||
@ -41,6 +48,7 @@ struct patch {
|
||||
char *new_name, *old_name;
|
||||
unsigned int old_mode, new_mode;
|
||||
int is_rename, is_copy, is_new, is_delete;
|
||||
int lines_added, lines_deleted;
|
||||
struct fragment *fragments;
|
||||
struct patch *next;
|
||||
};
|
||||
@ -503,6 +511,7 @@ static int find_header(char *line, unsigned long size, int *hdrsize, struct patc
|
||||
*/
|
||||
static int parse_fragment(char *line, unsigned long size, struct patch *patch, struct fragment *fragment)
|
||||
{
|
||||
int added, deleted;
|
||||
int len = linelen(line, size), offset;
|
||||
unsigned long pos[4], oldlines, newlines;
|
||||
|
||||
@ -521,6 +530,7 @@ static int parse_fragment(char *line, unsigned long size, struct patch *patch, s
|
||||
line += len;
|
||||
size -= len;
|
||||
linenr++;
|
||||
added = deleted = 0;
|
||||
for (offset = len; size > 0; offset += len, size -= len, line += len, linenr++) {
|
||||
if (!oldlines && !newlines)
|
||||
break;
|
||||
@ -535,13 +545,17 @@ static int parse_fragment(char *line, unsigned long size, struct patch *patch, s
|
||||
newlines--;
|
||||
break;
|
||||
case '-':
|
||||
deleted++;
|
||||
oldlines--;
|
||||
break;
|
||||
case '+':
|
||||
added++;
|
||||
newlines--;
|
||||
break;
|
||||
}
|
||||
}
|
||||
patch->lines_added += added;
|
||||
patch->lines_deleted += deleted;
|
||||
return offset;
|
||||
}
|
||||
|
||||
@ -586,14 +600,52 @@ static int parse_chunk(char *buffer, unsigned long size, struct patch *patch)
|
||||
return offset + hdrsize + patchsize;
|
||||
}
|
||||
|
||||
const char pluses[] = "++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++";
|
||||
const char minuses[]= "----------------------------------------------------------------------";
|
||||
|
||||
static void show_stats(struct patch *patch)
|
||||
{
|
||||
char *name = patch->old_name;
|
||||
int len, max, add, del;
|
||||
|
||||
if (!name)
|
||||
name = patch->new_name;
|
||||
|
||||
/*
|
||||
* "scale" the filename
|
||||
*/
|
||||
len = strlen(name);
|
||||
max = max_len;
|
||||
if (max > 50)
|
||||
max = 50;
|
||||
if (len > max)
|
||||
name += len - max;
|
||||
len = max;
|
||||
|
||||
/*
|
||||
* scale the add/delete
|
||||
*/
|
||||
max = max_change;
|
||||
if (max + len > 70)
|
||||
max = 70 - len;
|
||||
|
||||
add = (patch->lines_added * max + max_change/2) / max_change;
|
||||
del = (patch->lines_deleted * max + max_change/2) / max_change;
|
||||
printf(" %-*s |%5d %.*s%.*s\n",
|
||||
len, name, patch->lines_added + patch->lines_deleted,
|
||||
add, pluses, del, minuses);
|
||||
}
|
||||
|
||||
static void apply_patch_list(struct patch *patch)
|
||||
{
|
||||
int files, adds, dels;
|
||||
|
||||
files = adds = dels = 0;
|
||||
if (!patch)
|
||||
die("no patch found");
|
||||
do {
|
||||
const char *old_name = patch->old_name;
|
||||
const char *new_name = patch->new_name;
|
||||
struct fragment *frag;
|
||||
|
||||
if (old_name) {
|
||||
if (cache_name_pos(old_name, strlen(old_name)) < 0)
|
||||
@ -606,21 +658,30 @@ static void apply_patch_list(struct patch *patch)
|
||||
die("file %s already exists", new_name);
|
||||
}
|
||||
|
||||
printf("Applying patch to %s\n", new_name);
|
||||
printf(" new=%d delete=%d copy=%d rename=%d\n",
|
||||
patch->is_new, patch->is_delete, patch->is_copy, patch->is_rename);
|
||||
if (patch->old_mode != patch->new_mode)
|
||||
printf(" %o->%o\n", patch->old_mode, patch->new_mode);
|
||||
frag = patch->fragments;
|
||||
while (frag) {
|
||||
printf("Fragment %lu,%lu -> %lu,%lu\n%.*s",
|
||||
frag->oldpos, frag->oldlines,
|
||||
frag->newpos, frag->newlines,
|
||||
frag->size, frag->patch);
|
||||
frag = frag->next;
|
||||
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);
|
||||
}
|
||||
|
||||
} while ((patch = patch->next) != NULL);
|
||||
static void patch_stats(struct patch *patch)
|
||||
{
|
||||
int lines = patch->lines_added + patch->lines_deleted;
|
||||
|
||||
if (lines > max_change)
|
||||
max_change = lines;
|
||||
if (patch->old_name) {
|
||||
int len = strlen(patch->old_name);
|
||||
if (len > max_len)
|
||||
max_len = len;
|
||||
}
|
||||
if (patch->new_name) {
|
||||
int len = strlen(patch->new_name);
|
||||
if (len > max_len)
|
||||
max_len = len;
|
||||
}
|
||||
}
|
||||
|
||||
static int apply_patch(int fd)
|
||||
@ -641,6 +702,7 @@ static int apply_patch(int fd)
|
||||
nr = parse_chunk(buffer + offset, size, patch);
|
||||
if (nr < 0)
|
||||
break;
|
||||
patch_stats(patch);
|
||||
*listp = patch;
|
||||
listp = &patch->next;
|
||||
offset += nr;
|
||||
|
Loading…
Reference in New Issue
Block a user