mirror of
https://github.com/git/git.git
synced 2024-12-11 10:54:21 +08:00
105 lines
2.2 KiB
C
105 lines
2.2 KiB
C
#include "cache.h"
|
|
#include "xdiff-interface.h"
|
|
|
|
static int parse_num(char **cp_p, int *num_p)
|
|
{
|
|
char *cp = *cp_p;
|
|
int num = 0;
|
|
int read_some;
|
|
|
|
while ('0' <= *cp && *cp <= '9')
|
|
num = num * 10 + *cp++ - '0';
|
|
if (!(read_some = cp - *cp_p))
|
|
return -1;
|
|
*cp_p = cp;
|
|
*num_p = num;
|
|
return 0;
|
|
}
|
|
|
|
int parse_hunk_header(char *line, int len,
|
|
int *ob, int *on,
|
|
int *nb, int *nn)
|
|
{
|
|
char *cp;
|
|
cp = line + 4;
|
|
if (parse_num(&cp, ob)) {
|
|
bad_line:
|
|
return error("malformed diff output: %s", line);
|
|
}
|
|
if (*cp == ',') {
|
|
cp++;
|
|
if (parse_num(&cp, on))
|
|
goto bad_line;
|
|
}
|
|
else
|
|
*on = 1;
|
|
if (*cp++ != ' ' || *cp++ != '+')
|
|
goto bad_line;
|
|
if (parse_num(&cp, nb))
|
|
goto bad_line;
|
|
if (*cp == ',') {
|
|
cp++;
|
|
if (parse_num(&cp, nn))
|
|
goto bad_line;
|
|
}
|
|
else
|
|
*nn = 1;
|
|
return -!!memcmp(cp, " @@", 3);
|
|
}
|
|
|
|
static void consume_one(void *priv_, char *s, unsigned long size)
|
|
{
|
|
struct xdiff_emit_state *priv = priv_;
|
|
char *ep;
|
|
while (size) {
|
|
unsigned long this_size;
|
|
ep = memchr(s, '\n', size);
|
|
this_size = (ep == NULL) ? size : (ep - s + 1);
|
|
priv->consume(priv, s, this_size);
|
|
size -= this_size;
|
|
s += this_size;
|
|
}
|
|
}
|
|
|
|
int xdiff_outf(void *priv_, mmbuffer_t *mb, int nbuf)
|
|
{
|
|
struct xdiff_emit_state *priv = priv_;
|
|
int i;
|
|
|
|
for (i = 0; i < nbuf; i++) {
|
|
if (mb[i].ptr[mb[i].size-1] != '\n') {
|
|
/* Incomplete line */
|
|
priv->remainder = realloc(priv->remainder,
|
|
priv->remainder_size +
|
|
mb[i].size);
|
|
memcpy(priv->remainder + priv->remainder_size,
|
|
mb[i].ptr, mb[i].size);
|
|
priv->remainder_size += mb[i].size;
|
|
continue;
|
|
}
|
|
|
|
/* we have a complete line */
|
|
if (!priv->remainder) {
|
|
consume_one(priv, mb[i].ptr, mb[i].size);
|
|
continue;
|
|
}
|
|
priv->remainder = realloc(priv->remainder,
|
|
priv->remainder_size +
|
|
mb[i].size);
|
|
memcpy(priv->remainder + priv->remainder_size,
|
|
mb[i].ptr, mb[i].size);
|
|
consume_one(priv, priv->remainder,
|
|
priv->remainder_size + mb[i].size);
|
|
free(priv->remainder);
|
|
priv->remainder = NULL;
|
|
priv->remainder_size = 0;
|
|
}
|
|
if (priv->remainder) {
|
|
consume_one(priv, priv->remainder, priv->remainder_size);
|
|
free(priv->remainder);
|
|
priv->remainder = NULL;
|
|
priv->remainder_size = 0;
|
|
}
|
|
return 0;
|
|
}
|