static int xdl_emit_record(xdfile_t *xdf, long ri, char const *pre, xdemitcb_t *ecb) {
long size, psize = strlen(pre);
char const *rec;
size = xdl_get_rec(xdf, ri, &rec);
if (xdl_emit_diffrec(rec, size, pre, psize, ecb) < 0) {
return -1;
}
return 0;
}
static void xdl_find_func(xdfile_t *xf, long i, char *buf, long sz, long *ll,
find_func_t ff, void *ff_priv) {
/*
* Be quite stupid about this for now. Find a line in the old file
* before the start of the hunk (and context) which starts with a
* plausible character.
*/
const char *rec;
long len;
while (i-- > 0) {
len = xdl_get_rec(xf, i, &rec);
if ((*ll = ff(rec, len, buf, sz, ff_priv)) >= 0)
return;
}
*ll = 0;
}
static long get_func_line(xdfenv_t *xe, xdemitconf_t const *xecfg,
struct func_line *func_line, long start, long limit)
{
find_func_t ff = xecfg->find_func ? xecfg->find_func : def_ff;
long l, size, step = (start > limit) ? -1 : 1;
char *buf, dummy[1];
buf = func_line ? func_line->buf : dummy;
size = func_line ? sizeof(func_line->buf) : sizeof(dummy);
for (l = start; l != limit && 0 <= l && l < xe->xdf1.nrec; l += step) {
const char *rec;
long reclen = xdl_get_rec(&xe->xdf1, l, &rec);
long len = ff(rec, reclen, buf, size, xecfg->find_func_priv);
if (len >= 0) {
if (func_line)
func_line->len = len;
return l;
}
}
return -1;
}
