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Commit | Line | Data |
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cf1b7869 JH |
1 | /* |
2 | * Whitespace rules | |
3 | * | |
4 | * Copyright (c) 2007 Junio C Hamano | |
5 | */ | |
6 | ||
7 | #include "cache.h" | |
8 | #include "attr.h" | |
9 | ||
10 | static struct whitespace_rule { | |
11 | const char *rule_name; | |
12 | unsigned rule_bits; | |
13 | } whitespace_rule_names[] = { | |
14 | { "trailing-space", WS_TRAILING_SPACE }, | |
15 | { "space-before-tab", WS_SPACE_BEFORE_TAB }, | |
16 | { "indent-with-non-tab", WS_INDENT_WITH_NON_TAB }, | |
17 | }; | |
18 | ||
19 | unsigned parse_whitespace_rule(const char *string) | |
20 | { | |
21 | unsigned rule = WS_DEFAULT_RULE; | |
22 | ||
23 | while (string) { | |
24 | int i; | |
25 | size_t len; | |
26 | const char *ep; | |
27 | int negated = 0; | |
28 | ||
29 | string = string + strspn(string, ", \t\n\r"); | |
30 | ep = strchr(string, ','); | |
31 | if (!ep) | |
32 | len = strlen(string); | |
33 | else | |
34 | len = ep - string; | |
35 | ||
36 | if (*string == '-') { | |
37 | negated = 1; | |
38 | string++; | |
39 | len--; | |
40 | } | |
41 | if (!len) | |
42 | break; | |
43 | for (i = 0; i < ARRAY_SIZE(whitespace_rule_names); i++) { | |
44 | if (strncmp(whitespace_rule_names[i].rule_name, | |
45 | string, len)) | |
46 | continue; | |
47 | if (negated) | |
48 | rule &= ~whitespace_rule_names[i].rule_bits; | |
49 | else | |
50 | rule |= whitespace_rule_names[i].rule_bits; | |
51 | break; | |
52 | } | |
53 | string = ep; | |
54 | } | |
55 | return rule; | |
56 | } | |
57 | ||
58 | static void setup_whitespace_attr_check(struct git_attr_check *check) | |
59 | { | |
60 | static struct git_attr *attr_whitespace; | |
61 | ||
62 | if (!attr_whitespace) | |
63 | attr_whitespace = git_attr("whitespace", 10); | |
64 | check[0].attr = attr_whitespace; | |
65 | } | |
66 | ||
67 | unsigned whitespace_rule(const char *pathname) | |
68 | { | |
69 | struct git_attr_check attr_whitespace_rule; | |
70 | ||
71 | setup_whitespace_attr_check(&attr_whitespace_rule); | |
72 | if (!git_checkattr(pathname, 1, &attr_whitespace_rule)) { | |
73 | const char *value; | |
74 | ||
75 | value = attr_whitespace_rule.value; | |
76 | if (ATTR_TRUE(value)) { | |
77 | /* true (whitespace) */ | |
78 | unsigned all_rule = 0; | |
79 | int i; | |
80 | for (i = 0; i < ARRAY_SIZE(whitespace_rule_names); i++) | |
81 | all_rule |= whitespace_rule_names[i].rule_bits; | |
82 | return all_rule; | |
83 | } else if (ATTR_FALSE(value)) { | |
84 | /* false (-whitespace) */ | |
85 | return 0; | |
86 | } else if (ATTR_UNSET(value)) { | |
87 | /* reset to default (!whitespace) */ | |
88 | return whitespace_rule_cfg; | |
89 | } else { | |
90 | /* string */ | |
91 | return parse_whitespace_rule(value); | |
92 | } | |
93 | } else { | |
94 | return whitespace_rule_cfg; | |
95 | } | |
96 | } |