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Commit | Line | Data |
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17712991 LT |
1 | #include <ctype.h> |
2 | ||
3 | #include "cache.h" | |
4 | ||
5 | #define MAXNAME (256) | |
6 | ||
7 | static FILE *config_file; | |
8 | static int config_linenr; | |
9 | static int get_next_char(void) | |
10 | { | |
11 | int c; | |
12 | FILE *f; | |
13 | ||
14 | c = '\n'; | |
15 | if ((f = config_file) != NULL) { | |
16 | c = fgetc(f); | |
17 | if (c == '\n') | |
18 | config_linenr++; | |
19 | if (c == EOF) { | |
20 | config_file = NULL; | |
21 | c = '\n'; | |
22 | } | |
23 | } | |
24 | return c; | |
25 | } | |
26 | ||
27 | static char *parse_value(void) | |
28 | { | |
29 | static char value[1024]; | |
30 | int quote = 0, comment = 0, len = 0, space = 0; | |
31 | ||
32 | for (;;) { | |
33 | int c = get_next_char(); | |
34 | if (len >= sizeof(value)) | |
35 | return NULL; | |
36 | if (c == '\n') { | |
37 | if (quote) | |
38 | return NULL; | |
39 | value[len] = 0; | |
40 | return value; | |
41 | } | |
42 | if (comment) | |
43 | continue; | |
44 | if (isspace(c) && !quote) { | |
45 | space = 1; | |
46 | continue; | |
47 | } | |
48 | if (space) { | |
49 | if (len) | |
50 | value[len++] = ' '; | |
51 | space = 0; | |
52 | } | |
53 | if (c == '\\') { | |
54 | c = get_next_char(); | |
55 | switch (c) { | |
56 | case '\n': | |
57 | continue; | |
58 | case 't': | |
59 | c = '\t'; | |
60 | break; | |
61 | case 'b': | |
62 | c = '\b'; | |
63 | break; | |
64 | case 'n': | |
65 | c = '\n'; | |
66 | break; | |
67 | return NULL; | |
68 | } | |
69 | value[len++] = c; | |
70 | continue; | |
71 | } | |
72 | if (c == '"') { | |
73 | quote = 1-quote; | |
74 | continue; | |
75 | } | |
76 | if (!quote) { | |
77 | if (c == ';' || c == '#') { | |
78 | comment = 1; | |
79 | continue; | |
80 | } | |
81 | } | |
82 | value[len++] = c; | |
83 | } | |
84 | } | |
85 | ||
86 | static int get_value(config_fn_t fn, char *name, unsigned int len) | |
87 | { | |
88 | int c; | |
89 | char *value; | |
90 | ||
91 | /* Get the full name */ | |
92 | for (;;) { | |
93 | c = get_next_char(); | |
94 | if (c == EOF) | |
95 | break; | |
96 | if (!isalnum(c)) | |
97 | break; | |
98 | name[len++] = tolower(c); | |
99 | if (len >= MAXNAME) | |
100 | return -1; | |
101 | } | |
102 | name[len] = 0; | |
103 | while (c == ' ' || c == '\t') | |
104 | c = get_next_char(); | |
105 | ||
106 | value = NULL; | |
107 | if (c != '\n') { | |
108 | if (c != '=') | |
109 | return -1; | |
110 | value = parse_value(); | |
111 | if (!value) | |
112 | return -1; | |
113 | } | |
114 | return fn(name, value); | |
115 | } | |
116 | ||
117 | static int get_base_var(char *name) | |
118 | { | |
119 | int baselen = 0; | |
120 | ||
121 | for (;;) { | |
122 | int c = get_next_char(); | |
123 | if (c == EOF) | |
124 | return -1; | |
125 | if (c == ']') | |
126 | return baselen; | |
127 | if (!isalnum(c)) | |
128 | return -1; | |
129 | if (baselen > MAXNAME / 2) | |
130 | return -1; | |
131 | name[baselen++] = tolower(c); | |
132 | } | |
133 | } | |
134 | ||
135 | static int git_parse_file(config_fn_t fn) | |
136 | { | |
137 | int comment = 0; | |
138 | int baselen = 0; | |
139 | static char var[MAXNAME]; | |
140 | ||
141 | for (;;) { | |
142 | int c = get_next_char(); | |
143 | if (c == '\n') { | |
144 | /* EOF? */ | |
145 | if (!config_file) | |
146 | return 0; | |
147 | comment = 0; | |
148 | continue; | |
149 | } | |
150 | if (comment || isspace(c)) | |
151 | continue; | |
152 | if (c == '#' || c == ';') { | |
153 | comment = 1; | |
154 | continue; | |
155 | } | |
156 | if (c == '[') { | |
157 | baselen = get_base_var(var); | |
158 | if (baselen <= 0) | |
159 | break; | |
160 | var[baselen++] = '.'; | |
161 | var[baselen] = 0; | |
162 | continue; | |
163 | } | |
164 | if (!isalpha(c)) | |
165 | break; | |
166 | var[baselen] = c; | |
167 | if (get_value(fn, var, baselen+1) < 0) | |
168 | break; | |
169 | } | |
170 | die("bad config file line %d", config_linenr); | |
171 | } | |
172 | ||
173 | int git_config_int(const char *name, const char *value) | |
174 | { | |
175 | if (value && *value) { | |
176 | char *end; | |
177 | int val = strtol(value, &end, 0); | |
178 | if (!*end) | |
179 | return val; | |
180 | } | |
181 | die("bad config value for '%s'", name); | |
182 | } | |
183 | ||
184 | int git_config_bool(const char *name, const char *value) | |
185 | { | |
186 | if (!value) | |
187 | return 1; | |
188 | if (!*value) | |
189 | return 0; | |
190 | if (!strcasecmp(value, "true")) | |
191 | return 1; | |
192 | if (!strcasecmp(value, "false")) | |
193 | return 0; | |
194 | return git_config_int(name, value) != 0; | |
195 | } | |
196 | ||
197 | int git_default_config(const char *var, const char *value) | |
198 | { | |
199 | /* This needs a better name */ | |
200 | if (!strcmp(var, "core.filemode")) { | |
201 | trust_executable_bit = git_config_bool(var, value); | |
202 | return 0; | |
203 | } | |
204 | ||
205 | /* Add other config variables here.. */ | |
206 | return 0; | |
207 | } | |
208 | ||
209 | int git_config(config_fn_t fn) | |
210 | { | |
211 | int ret; | |
212 | FILE *f = fopen(git_path("config"), "r"); | |
213 | ||
214 | ret = -1; | |
215 | if (f) { | |
216 | config_file = f; | |
217 | config_linenr = 1; | |
218 | ret = git_parse_file(fn); | |
219 | fclose(f); | |
220 | } | |
221 | return ret; | |
222 | } |