Install the default "master" branch configuration after cloning a void
[git/git.git] / color.c
CommitLineData
7c92fe0e 1#include "cache.h"
85023577 2#include "color.h"
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3
4#define COLOR_RESET "\033[m"
5
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6int git_use_color_default = 0;
7
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8static int parse_color(const char *name, int len)
9{
10 static const char * const color_names[] = {
11 "normal", "black", "red", "green", "yellow",
12 "blue", "magenta", "cyan", "white"
13 };
14 char *end;
15 int i;
16 for (i = 0; i < ARRAY_SIZE(color_names); i++) {
17 const char *str = color_names[i];
18 if (!strncasecmp(name, str, len) && !str[len])
19 return i - 1;
20 }
21 i = strtol(name, &end, 10);
a0cf49c1 22 if (end - name == len && i >= -1 && i <= 255)
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23 return i;
24 return -2;
25}
26
27static int parse_attr(const char *name, int len)
28{
29 static const int attr_values[] = { 1, 2, 4, 5, 7 };
30 static const char * const attr_names[] = {
31 "bold", "dim", "ul", "blink", "reverse"
32 };
33 int i;
34 for (i = 0; i < ARRAY_SIZE(attr_names); i++) {
35 const char *str = attr_names[i];
36 if (!strncasecmp(name, str, len) && !str[len])
37 return attr_values[i];
38 }
39 return -1;
40}
41
42void color_parse(const char *value, const char *var, char *dst)
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43{
44 color_parse_mem(value, strlen(value), var, dst);
45}
46
47void color_parse_mem(const char *value, int value_len, const char *var,
48 char *dst)
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49{
50 const char *ptr = value;
2c2dc7c8 51 int len = value_len;
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52 int attr = -1;
53 int fg = -2;
54 int bg = -2;
55
2c2dc7c8 56 if (!strncasecmp(value, "reset", len)) {
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57 strcpy(dst, "\033[m");
58 return;
59 }
60
61 /* [fg [bg]] [attr] */
2c2dc7c8 62 while (len > 0) {
7c92fe0e 63 const char *word = ptr;
2c2dc7c8 64 int val, wordlen = 0;
7c92fe0e 65
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66 while (len > 0 && !isspace(word[wordlen])) {
67 wordlen++;
68 len--;
69 }
7c92fe0e 70
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71 ptr = word + wordlen;
72 while (len > 0 && isspace(*ptr)) {
7c92fe0e 73 ptr++;
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74 len--;
75 }
7c92fe0e 76
2c2dc7c8 77 val = parse_color(word, wordlen);
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78 if (val >= -1) {
79 if (fg == -2) {
80 fg = val;
81 continue;
82 }
83 if (bg == -2) {
84 bg = val;
85 continue;
86 }
87 goto bad;
88 }
2c2dc7c8 89 val = parse_attr(word, wordlen);
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90 if (val < 0 || attr != -1)
91 goto bad;
92 attr = val;
93 }
94
95 if (attr >= 0 || fg >= 0 || bg >= 0) {
96 int sep = 0;
97
98 *dst++ = '\033';
99 *dst++ = '[';
100 if (attr >= 0) {
101 *dst++ = '0' + attr;
102 sep++;
103 }
104 if (fg >= 0) {
105 if (sep++)
106 *dst++ = ';';
107 if (fg < 8) {
108 *dst++ = '3';
109 *dst++ = '0' + fg;
110 } else {
111 dst += sprintf(dst, "38;5;%d", fg);
112 }
113 }
114 if (bg >= 0) {
115 if (sep++)
116 *dst++ = ';';
117 if (bg < 8) {
118 *dst++ = '4';
119 *dst++ = '0' + bg;
120 } else {
121 dst += sprintf(dst, "48;5;%d", bg);
122 }
123 }
124 *dst++ = 'm';
125 }
126 *dst = 0;
127 return;
128bad:
2c2dc7c8 129 die("bad color value '%.*s' for variable '%s'", value_len, value, var);
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130}
131
0f6f5a40 132int git_config_colorbool(const char *var, const char *value, int stdout_is_tty)
7c92fe0e 133{
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134 if (value) {
135 if (!strcasecmp(value, "never"))
136 return 0;
137 if (!strcasecmp(value, "always"))
138 return 1;
139 if (!strcasecmp(value, "auto"))
140 goto auto_color;
7c92fe0e 141 }
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142
143 /* Missing or explicit false to turn off colorization */
144 if (!git_config_bool(var, value))
7c92fe0e 145 return 0;
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146
147 /* any normal truth value defaults to 'auto' */
148 auto_color:
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149 if (stdout_is_tty < 0)
150 stdout_is_tty = isatty(1);
6e9af863 151 if (stdout_is_tty || (pager_in_use() && pager_use_color)) {
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152 char *term = getenv("TERM");
153 if (term && strcmp(term, "dumb"))
154 return 1;
155 }
156 return 0;
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157}
158
ef90d6d4 159int git_color_default_config(const char *var, const char *value, void *cb)
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160{
161 if (!strcmp(var, "color.ui")) {
162 git_use_color_default = git_config_colorbool(var, value, -1);
163 return 0;
164 }
165
ef90d6d4 166 return git_default_config(var, value, cb);
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167}
168
f26a0012 169static int color_vfprintf(FILE *fp, const char *color, const char *fmt,
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170 va_list args, const char *trail)
171{
172 int r = 0;
173
174 if (*color)
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175 r += fprintf(fp, "%s", color);
176 r += vfprintf(fp, fmt, args);
7c92fe0e 177 if (*color)
f26a0012 178 r += fprintf(fp, "%s", COLOR_RESET);
7c92fe0e 179 if (trail)
f26a0012 180 r += fprintf(fp, "%s", trail);
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181 return r;
182}
183
184
185
f26a0012 186int color_fprintf(FILE *fp, const char *color, const char *fmt, ...)
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187{
188 va_list args;
189 int r;
190 va_start(args, fmt);
f26a0012 191 r = color_vfprintf(fp, color, fmt, args, NULL);
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192 va_end(args);
193 return r;
194}
195
f26a0012 196int color_fprintf_ln(FILE *fp, const char *color, const char *fmt, ...)
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197{
198 va_list args;
199 int r;
200 va_start(args, fmt);
f26a0012 201 r = color_vfprintf(fp, color, fmt, args, "\n");
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202 va_end(args);
203 return r;
204}
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205
206/*
207 * This function splits the buffer by newlines and colors the lines individually.
208 *
209 * Returns 0 on success.
210 */
211int color_fwrite_lines(FILE *fp, const char *color,
212 size_t count, const char *buf)
213{
214 if (!*color)
215 return fwrite(buf, count, 1, fp) != 1;
216 while (count) {
217 char *p = memchr(buf, '\n', count);
218 if (p != buf && (fputs(color, fp) < 0 ||
219 fwrite(buf, p ? p - buf : count, 1, fp) != 1 ||
220 fputs(COLOR_RESET, fp) < 0))
221 return -1;
222 if (!p)
223 return 0;
224 if (fputc('\n', fp) < 0)
225 return -1;
226 count -= p + 1 - buf;
227 buf = p + 1;
228 }
229 return 0;
230}
231
232