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-rw-r--r--toys/patch.c20
1 files changed, 13 insertions, 7 deletions
diff --git a/toys/patch.c b/toys/patch.c
index 63599652..dab3fbfb 100644
--- a/toys/patch.c
+++ b/toys/patch.c
@@ -51,7 +51,8 @@ DEFINE_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;
)
@@ -308,14 +309,19 @@ void patch_main(void)
// 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)
- error_exit("Corrupt hunk %d at %ld\n", 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;
@@ -323,7 +329,7 @@ void patch_main(void)
// 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;