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/*
* Whitespace rules
*
* Copyright (c) 2007 Junio C Hamano
*/
#include "cache.h"
#include "attr.h"
static struct whitespace_rule {
const char *rule_name;
unsigned rule_bits;
} whitespace_rule_names[] = {
{ "trailing-space", WS_TRAILING_SPACE },
{ "space-before-tab", WS_SPACE_BEFORE_TAB },
{ "indent-with-non-tab", WS_INDENT_WITH_NON_TAB },
};
unsigned parse_whitespace_rule(const char *string)
{
unsigned rule = WS_DEFAULT_RULE;
while (string) {
int i;
size_t len;
const char *ep;
int negated = 0;
string = string + strspn(string, ", \t\n\r");
ep = strchr(string, ',');
if (!ep)
len = strlen(string);
else
len = ep - string;
if (*string == '-') {
negated = 1;
string++;
len--;
}
if (!len)
break;
for (i = 0; i < ARRAY_SIZE(whitespace_rule_names); i++) {
if (strncmp(whitespace_rule_names[i].rule_name,
string, len))
continue;
if (negated)
rule &= ~whitespace_rule_names[i].rule_bits;
else
rule |= whitespace_rule_names[i].rule_bits;
break;
}
string = ep;
}
return rule;
}
static void setup_whitespace_attr_check(struct git_attr_check *check)
{
static struct git_attr *attr_whitespace;
if (!attr_whitespace)
attr_whitespace = git_attr("whitespace", 10);
check[0].attr = attr_whitespace;
}
unsigned whitespace_rule(const char *pathname)
{
struct git_attr_check attr_whitespace_rule;
setup_whitespace_attr_check(&attr_whitespace_rule);
if (!git_checkattr(pathname, 1, &attr_whitespace_rule)) {
const char *value;
value = attr_whitespace_rule.value;
if (ATTR_TRUE(value)) {
/* true (whitespace) */
unsigned all_rule = 0;
int i;
for (i = 0; i < ARRAY_SIZE(whitespace_rule_names); i++)
all_rule |= whitespace_rule_names[i].rule_bits;
return all_rule;
} else if (ATTR_FALSE(value)) {
/* false (-whitespace) */
return 0;
} else if (ATTR_UNSET(value)) {
/* reset to default (!whitespace) */
return whitespace_rule_cfg;
} else {
/* string */
return parse_whitespace_rule(value);
}
} else {
return whitespace_rule_cfg;
}
}
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