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git/builtin/patch-id.c
Stephen Boyd c2e86addb8 Fix sparse warnings
Fix warnings from 'make check'.

 - These files don't include 'builtin.h' causing sparse to complain that
   cmd_* isn't declared:

   builtin/clone.c:364, builtin/fetch-pack.c:797,
   builtin/fmt-merge-msg.c:34, builtin/hash-object.c:78,
   builtin/merge-index.c:69, builtin/merge-recursive.c:22
   builtin/merge-tree.c:341, builtin/mktag.c:156, builtin/notes.c:426
   builtin/notes.c:822, builtin/pack-redundant.c:596,
   builtin/pack-refs.c:10, builtin/patch-id.c:60, builtin/patch-id.c:149,
   builtin/remote.c:1512, builtin/remote-ext.c:240,
   builtin/remote-fd.c:53, builtin/reset.c:236, builtin/send-pack.c:384,
   builtin/unpack-file.c:25, builtin/var.c:75

 - These files have symbols which should be marked static since they're
   only file scope:

   submodule.c:12, diff.c:631, replace_object.c:92, submodule.c:13,
   submodule.c:14, trace.c:78, transport.c:195, transport-helper.c:79,
   unpack-trees.c:19, url.c:3, url.c:18, url.c:104, url.c:117, url.c:123,
   url.c:129, url.c:136, thread-utils.c:21, thread-utils.c:48

 - These files redeclare symbols to be different types:

   builtin/index-pack.c:210, parse-options.c:564, parse-options.c:571,
   usage.c:49, usage.c:58, usage.c:63, usage.c:72

 - These files use a literal integer 0 when they really should use a NULL
   pointer:

   daemon.c:663, fast-import.c:2942, imap-send.c:1072, notes-merge.c:362

While we're in the area, clean up some unused #includes in builtin files
(mostly exec_cmd.h).

Signed-off-by: Stephen Boyd <bebarino@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-03-22 10:16:54 -07:00

155 lines
3 KiB
C

#include "builtin.h"
static void flush_current_id(int patchlen, unsigned char *id, git_SHA_CTX *c)
{
unsigned char result[20];
char name[50];
if (!patchlen)
return;
git_SHA1_Final(result, c);
memcpy(name, sha1_to_hex(id), 41);
printf("%s %s\n", sha1_to_hex(result), name);
git_SHA1_Init(c);
}
static int remove_space(char *line)
{
char *src = line;
char *dst = line;
unsigned char c;
while ((c = *src++) != '\0') {
if (!isspace(c))
*dst++ = c;
}
return dst - line;
}
static int scan_hunk_header(const char *p, int *p_before, int *p_after)
{
static const char digits[] = "0123456789";
const char *q, *r;
int n;
q = p + 4;
n = strspn(q, digits);
if (q[n] == ',') {
q += n + 1;
n = strspn(q, digits);
}
if (n == 0 || q[n] != ' ' || q[n+1] != '+')
return 0;
r = q + n + 2;
n = strspn(r, digits);
if (r[n] == ',') {
r += n + 1;
n = strspn(r, digits);
}
if (n == 0)
return 0;
*p_before = atoi(q);
*p_after = atoi(r);
return 1;
}
static int get_one_patchid(unsigned char *next_sha1, git_SHA_CTX *ctx)
{
static char line[1000];
int patchlen = 0, found_next = 0;
int before = -1, after = -1;
while (fgets(line, sizeof(line), stdin) != NULL) {
char *p = line;
int len;
if (!memcmp(line, "diff-tree ", 10))
p += 10;
else if (!memcmp(line, "commit ", 7))
p += 7;
else if (!memcmp(line, "From ", 5))
p += 5;
else if (!memcmp(line, "\\ ", 2) && 12 < strlen(line))
continue;
if (!get_sha1_hex(p, next_sha1)) {
found_next = 1;
break;
}
/* Ignore commit comments */
if (!patchlen && memcmp(line, "diff ", 5))
continue;
/* Parsing diff header? */
if (before == -1) {
if (!memcmp(line, "index ", 6))
continue;
else if (!memcmp(line, "--- ", 4))
before = after = 1;
else if (!isalpha(line[0]))
break;
}
/* Looking for a valid hunk header? */
if (before == 0 && after == 0) {
if (!memcmp(line, "@@ -", 4)) {
/* Parse next hunk, but ignore line numbers. */
scan_hunk_header(line, &before, &after);
continue;
}
/* Split at the end of the patch. */
if (memcmp(line, "diff ", 5))
break;
/* Else we're parsing another header. */
before = after = -1;
}
/* If we get here, we're inside a hunk. */
if (line[0] == '-' || line[0] == ' ')
before--;
if (line[0] == '+' || line[0] == ' ')
after--;
/* Compute the sha without whitespace */
len = remove_space(line);
patchlen += len;
git_SHA1_Update(ctx, line, len);
}
if (!found_next)
hashclr(next_sha1);
return patchlen;
}
static void generate_id_list(void)
{
unsigned char sha1[20], n[20];
git_SHA_CTX ctx;
int patchlen;
git_SHA1_Init(&ctx);
hashclr(sha1);
while (!feof(stdin)) {
patchlen = get_one_patchid(n, &ctx);
flush_current_id(patchlen, sha1, &ctx);
hashcpy(sha1, n);
}
}
static const char patch_id_usage[] = "git patch-id < patch";
int cmd_patch_id(int argc, const char **argv, const char *prefix)
{
if (argc != 1)
usage(patch_id_usage);
generate_id_list();
return 0;
}