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filter: refactor cgit_new_filter()

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Use prefixcmp() as a preparation for using strip_prefix() later. Also,
interpret the command as a file name if it contains a colon but none of
the filter prefixes matches instead of bailing out and adding a special
check for Windows.

Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de>
This commit is contained in:
Lukas Fleischer 2014-01-14 00:29:07 +01:00 committed by Jason A. Donenfeld
parent 3488d12405
commit 80f87c1003
1 changed files with 7 additions and 23 deletions
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30
filter.c
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@ -379,31 +379,19 @@ static const struct {
const char *prefix;
struct cgit_filter *(*ctor)(const char *cmd, int argument_count);
} filter_specs[] = {
{ "exec", new_exec_filter },
{ "exec:", new_exec_filter },
#ifndef NO_LUA
{ "lua", new_lua_filter },
{ "lua:", new_lua_filter },
#endif
};
struct cgit_filter *cgit_new_filter(const char *cmd, filter_type filtertype)
{
char *colon;
int i;
size_t len;
int argument_count;
int argument_count, i;
if (!cmd || !cmd[0])
return NULL;
colon = strchr(cmd, ':');
len = colon - cmd;
/*
* In case we're running on Windows, don't allow a single letter before
* the colon.
*/
if (len == 1)
colon = NULL;
switch (filtertype) {
case EMAIL:
argument_count = 2;
@ -420,15 +408,11 @@ struct cgit_filter *cgit_new_filter(const char *cmd, filter_type filtertype)
break;
}
/* If no prefix is given, exec filter is the default. */
if (!colon)
return new_exec_filter(cmd, argument_count);
for (i = 0; i < ARRAY_SIZE(filter_specs); i++) {
if (len == strlen(filter_specs[i].prefix) &&
!strncmp(filter_specs[i].prefix, cmd, len))
return filter_specs[i].ctor(colon + 1, argument_count);
if (!prefixcmp(cmd, filter_specs[i].prefix))
return filter_specs[i].ctor(strchr(cmd, ':') + 1, argument_count);
}
die("Invalid filter type: %.*s", (int) len, cmd);
/* If no valid prefix is given, exec filter is the default. */
return new_exec_filter(cmd, argument_count);
}