[git commit master 1/1] patch: deal with ommitted ", len" in hunk headers (default len to 1)
Rob Landley
rob at landley.net
Fri Aug 13 14:41:15 UTC 2010
commit: http://git.busybox.net/busybox/commit/?id=760d0ebbe5edaedb60b4de64bde2ad098d1f45d9
branch: http://git.busybox.net/busybox/commit/?id=refs/heads/master
Signed-off-by: Rob Landley <rob at landley.net>
Signed-off-by: Denys Vlasenko <vda.linux at googlemail.com>
---
editors/patch.c | 20 +++++++++++++-------
1 files changed, 13 insertions(+), 7 deletions(-)
diff --git a/editors/patch.c b/editors/patch.c
index 7f3234e..b12c662 100644
--- a/editors/patch.c
+++ b/editors/patch.c
@@ -227,7 +227,8 @@ struct globals {
long prefix;
struct double_list *current_hunk;
- long oldline, oldlen, newline, newlen, linenum;
+ long oldline, oldlen, newline, newlen;
+ long linenum;
int context, state, filein, fileout, filepatch, hunknum;
char *tempname;
@@ -505,14 +506,19 @@ int patch_main(int argc UNUSED_PARAM, char **argv)
// way the patch man page says, so you have to read the first hunk
// and _guess_.
- // Start a new hunk?
+ // Start a new hunk? Usually @@ -oldline,oldlen +newline,newlen @@
+ // but a missing ,value means the value is 1.
} else if (state == 1 && !strncmp("@@ -", patchline, 4)) {
int i;
+ char *s = patchline+4;
- i = sscanf(patchline+4, "%ld,%ld +%ld,%ld", &TT.oldline,
- &TT.oldlen, &TT.newline, &TT.newlen);
- if (i != 4)
- bb_error_msg_and_die("corrupt hunk %d at %ld", TT.hunknum, TT.linenum);
+ // Read oldline[,oldlen] +newline[,newlen]
+
+ TT.oldlen = TT.newlen = 1;
+ TT.oldline = strtol(s, &s, 10);
+ if (*s == ',') TT.oldlen=strtol(s+1, &s, 10);
+ TT.newline = strtol(s+2, &s, 10);
+ if (*s == ',') TT.newlen = strtol(s+1, &s, 10);
TT.context = 0;
state = 2;
@@ -520,7 +526,7 @@ int patch_main(int argc UNUSED_PARAM, char **argv)
// If this is the first hunk, open the file.
if (TT.filein == -1) {
int oldsum, newsum, del = 0;
- char *s, *name;
+ char *name;
oldsum = TT.oldline + TT.oldlen;
newsum = TT.newline + TT.newlen;
--
1.7.1
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