Mechanical conversion to use prefixcmp()
This mechanically converts strncmp() to use prefixcmp(), but only when
the parameters match specific patterns, so that they can be verified
easily. Leftover from this will be fixed in a separate step, including
idiotic conversions like
if (!strncmp("foo", arg, 3))
=>
if (!(-prefixcmp(arg, "foo")))
This was done by using this script in px.perl
#!/usr/bin/perl -i.bak -p
if (/strncmp\(([^,]+), "([^\\"]*)", (\d+)\)/ && (length($2) == $3)) {
s|strncmp\(([^,]+), "([^\\"]*)", (\d+)\)|prefixcmp($1, "$2")|;
}
if (/strncmp\("([^\\"]*)", ([^,]+), (\d+)\)/ && (length($1) == $3)) {
s|strncmp\("([^\\"]*)", ([^,]+), (\d+)\)|(-prefixcmp($2, "$1"))|;
}
and running:
$ git grep -l strncmp -- '*.c' | xargs perl px.perl
Signed-off-by: Junio C Hamano <junkio@cox.net>
diff --git a/builtin-show-ref.c b/builtin-show-ref.c
index 853f13f..ae0eddd 100644
--- a/builtin-show-ref.c
+++ b/builtin-show-ref.c
@@ -28,8 +28,8 @@
if (tags_only || heads_only) {
int match;
- match = heads_only && !strncmp(refname, "refs/heads/", 11);
- match |= tags_only && !strncmp(refname, "refs/tags/", 10);
+ match = heads_only && !prefixcmp(refname, "refs/heads/");
+ match |= tags_only && !prefixcmp(refname, "refs/tags/");
if (!match)
return 0;
}
@@ -178,8 +178,8 @@
hash_only = 1;
continue;
}
- if (!strncmp(arg, "--hash=", 7) ||
- (!strncmp(arg, "--abbrev", 8) &&
+ if (!prefixcmp(arg, "--hash=") ||
+ (!prefixcmp(arg, "--abbrev") &&
(arg[8] == '=' || arg[8] == '\0'))) {
if (arg[2] != 'h' && !arg[8])
/* --abbrev only */
@@ -215,7 +215,7 @@
}
if (!strcmp(arg, "--exclude-existing"))
return exclude_existing(NULL);
- if (!strncmp(arg, "--exclude-existing=", 19))
+ if (!prefixcmp(arg, "--exclude-existing="))
return exclude_existing(arg + 19);
usage(show_ref_usage);
}
@@ -224,7 +224,7 @@
unsigned char sha1[20];
while (*pattern) {
- if (!strncmp(*pattern, "refs/", 5) &&
+ if (!prefixcmp(*pattern, "refs/") &&
resolve_ref(*pattern, sha1, 1, NULL)) {
if (!quiet)
show_one(*pattern, sha1);
