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patch: fix "patch at the beginning" testcase failure

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Signed-off-by: Rob Landley <rob@landley.net>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Rob Landley 2010-11-29 03:24:51 +01:00 committed by Denys Vlasenko
parent 0ab45da929
commit 8027a202a8
1 changed files with 14 additions and 9 deletions
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23
editors/patch.c
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@ -238,7 +238,7 @@ static int apply_one_hunk(void)
// complete hunk. // complete hunk.
plist = TT.current_hunk; plist = TT.current_hunk;
buf = NULL; buf = NULL;
if (TT.context) for (;;) { if (reverse ? TT.oldlen : TT.newlen) for (;;) {
char *data = xmalloc_reads(TT.filein, NULL, NULL); char *data = xmalloc_reads(TT.filein, NULL, NULL);
TT.linenum++; TT.linenum++;
@ -352,6 +352,8 @@ int patch_main(int argc UNUSED_PARAM, char **argv)
int reverse, state = 0; int reverse, state = 0;
char *oldname = NULL, *newname = NULL; char *oldname = NULL, *newname = NULL;
char *opt_p, *opt_i; char *opt_p, *opt_i;
long oldlen = oldlen; /* for compiler */
long newlen = newlen; /* for compiler */
INIT_TT(); INIT_TT();
@ -391,8 +393,8 @@ int patch_main(int argc UNUSED_PARAM, char **argv)
if (*patchline==' ' || *patchline=='+' || *patchline=='-') { if (*patchline==' ' || *patchline=='+' || *patchline=='-') {
dlist_add(&TT.current_hunk, patchline); dlist_add(&TT.current_hunk, patchline);
if (*patchline != '+') TT.oldlen--; if (*patchline != '+') oldlen--;
if (*patchline != '-') TT.newlen--; if (*patchline != '-') newlen--;
// Context line? // Context line?
if (*patchline==' ' && state==2) TT.context++; if (*patchline==' ' && state==2) TT.context++;
@ -400,7 +402,7 @@ int patch_main(int argc UNUSED_PARAM, char **argv)
// If we've consumed all expected hunk lines, apply the hunk. // If we've consumed all expected hunk lines, apply the hunk.
if (!TT.oldlen && !TT.newlen) state = apply_one_hunk(); if (!oldlen && !newlen) state = apply_one_hunk();
continue; continue;
} }
fail_hunk(); fail_hunk();
@ -447,11 +449,14 @@ int patch_main(int argc UNUSED_PARAM, char **argv)
// Read oldline[,oldlen] +newline[,newlen] // Read oldline[,oldlen] +newline[,newlen]
TT.oldlen = TT.newlen = 1; TT.oldlen = oldlen = TT.newlen = newlen = 1;
TT.oldline = strtol(s, &s, 10); TT.oldline = strtol(s, &s, 10);
if (*s == ',') TT.oldlen=strtol(s+1, &s, 10); if (*s == ',') TT.oldlen = oldlen = strtol(s+1, &s, 10);
TT.newline = strtol(s+2, &s, 10); TT.newline = strtol(s+2, &s, 10);
if (*s == ',') TT.newlen = strtol(s+1, &s, 10); if (*s == ',') TT.newlen = newlen = strtol(s+1, &s, 10);
if (oldlen < 1 && newlen < 1)
bb_error_msg_and_die("Really? %s", patchline);
TT.context = 0; TT.context = 0;
state = 2; state = 2;
@ -461,8 +466,8 @@ int patch_main(int argc UNUSED_PARAM, char **argv)
int oldsum, newsum, empty = 0; int oldsum, newsum, empty = 0;
char *name; char *name;
oldsum = TT.oldline + TT.oldlen; oldsum = TT.oldline + oldlen;
newsum = TT.newline + TT.newlen; newsum = TT.newline + newlen;
name = reverse ? oldname : newname; name = reverse ? oldname : newname;