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Diffstat (limited to 'xdiff/xemit.c')
-rw-r--r--xdiff/xemit.c37
1 files changed, 23 insertions, 14 deletions
diff --git a/xdiff/xemit.c b/xdiff/xemit.c
index 4b6e639..d3d9c84 100644
--- a/xdiff/xemit.c
+++ b/xdiff/xemit.c
@@ -69,7 +69,24 @@ static xdchange_t *xdl_get_hunk(xdchange_t *xscr, xdemitconf_t const *xecfg) {
}
-static void xdl_find_func(xdfile_t *xf, long i, char *buf, long sz, long *ll) {
+static long def_ff(const char *rec, long len, char *buf, long sz, void *priv)
+{
+ if (len > 0 &&
+ (isalpha((unsigned char)*rec) || /* identifier? */
+ *rec == '_' || /* also identifier? */
+ *rec == '$')) { /* identifiers from VMS and other esoterico */
+ if (len > sz)
+ len = sz;
+ while (0 < len && isspace((unsigned char)rec[len - 1]))
+ len--;
+ memcpy(buf, rec, len);
+ return len;
+ }
+ return -1;
+}
+
+static void xdl_find_func(xdfile_t *xf, long i, char *buf, long sz, long *ll,
+ find_func_t ff, void *ff_priv) {
/*
* Be quite stupid about this for now. Find a line in the old file
@@ -80,22 +97,12 @@ static void xdl_find_func(xdfile_t *xf, long i, char *buf, long sz, long *ll) {
const char *rec;
long len;
- *ll = 0;
while (i-- > 0) {
len = xdl_get_rec(xf, i, &rec);
- if (len > 0 &&
- (isalpha((unsigned char)*rec) || /* identifier? */
- *rec == '_' || /* also identifier? */
- *rec == '$')) { /* mysterious GNU diff's invention */
- if (len > sz)
- len = sz;
- while (0 < len && isspace((unsigned char)rec[len - 1]))
- len--;
- memcpy(buf, rec, len);
- *ll = len;
+ if ((*ll = ff(rec, len, buf, sz, ff_priv)) >= 0)
return;
- }
}
+ *ll = 0;
}
@@ -120,6 +127,7 @@ int xdl_emit_diff(xdfenv_t *xe, xdchange_t *xscr, xdemitcb_t *ecb,
xdchange_t *xch, *xche;
char funcbuf[80];
long funclen = 0;
+ find_func_t ff = xecfg->find_func ? xecfg->find_func : def_ff;
if (xecfg->flags & XDL_EMIT_COMMON)
return xdl_emit_common(xe, xscr, ecb, xecfg);
@@ -143,7 +151,8 @@ int xdl_emit_diff(xdfenv_t *xe, xdchange_t *xscr, xdemitcb_t *ecb,
if (xecfg->flags & XDL_EMIT_FUNCNAMES) {
xdl_find_func(&xe->xdf1, s1, funcbuf,
- sizeof(funcbuf), &funclen);
+ sizeof(funcbuf), &funclen,
+ ff, xecfg->find_func_priv);
}
if (xdl_emit_hunk_hdr(s1 + 1, e1 - s1, s2 + 1, e2 - s2,
funcbuf, funclen, ecb) < 0)