Move the code to search for a function line to be shown in the hunk
header into its own function and to make returning the length-limited
result string easier, introduce struct func_line.
Signed-off-by: Rene Scharfe <rene.scharfe@xxxxxxxxxxxxxx>
---
xdiff/xemit.c | 43 +++++++++++++++++++++++++++----------------
1 files changed, 27 insertions(+), 16 deletions(-)
diff --git a/xdiff/xemit.c b/xdiff/xemit.c
index 277e2ee..64eb17a 100644
--- a/xdiff/xemit.c
+++ b/xdiff/xemit.c
@@ -100,14 +100,35 @@ static int xdl_emit_common(xdfenv_t *xe, xdchange_t *xscr, xdemitcb_t *ecb,
return 0;
}
+struct func_line {
+ long len;
+ char buf[80];
+};
+
+static void 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 = sizeof(func_line->buf);
+ char *buf = func_line->buf;
+
+ for (l = start; l > limit && 0 <= l; l--) {
+ 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) {
+ func_line->len = len;
+ break;
+ }
+ }
+}
+
int xdl_emit_diff(xdfenv_t *xe, xdchange_t *xscr, xdemitcb_t *ecb,
xdemitconf_t const *xecfg) {
long s1, s2, e1, e2, lctx;
xdchange_t *xch, *xche;
- char funcbuf[80];
- long funclen = 0;
long funclineprev = -1;
- find_func_t ff = xecfg->find_func ? xecfg->find_func : def_ff;
+ struct func_line func_line = { 0 };
if (xecfg->flags & XDL_EMIT_COMMON)
return xdl_emit_common(xe, xscr, ecb, xecfg);
@@ -130,22 +151,12 @@ int xdl_emit_diff(xdfenv_t *xe, xdchange_t *xscr, xdemitcb_t *ecb,
*/
if (xecfg->flags & XDL_EMIT_FUNCNAMES) {
- long l;
- for (l = s1 - 1; l >= 0 && l > funclineprev; l--) {
- const char *rec;
- long reclen = xdl_get_rec(&xe->xdf1, l, &rec);
- long newfunclen = ff(rec, reclen, funcbuf,
- sizeof(funcbuf),
- xecfg->find_func_priv);
- if (newfunclen >= 0) {
- funclen = newfunclen;
- break;
- }
- }
+ get_func_line(xe, xecfg, &func_line,
+ s1 - 1, funclineprev);
funclineprev = s1 - 1;
}
if (xdl_emit_hunk_hdr(s1 + 1, e1 - s1, s2 + 1, e2 - s2,
- funcbuf, funclen, ecb) < 0)
+ func_line.buf, func_line.len, ecb) < 0)
return -1;
/*
--
1.7.7
--
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