Commit | Line | Data |
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8fc0321f IM |
1 | #include "cache.h" |
2 | #include "color.h" | |
3 | ||
4 | int perf_use_color_default = 0; | |
5 | ||
6 | static int parse_color(const char *name, int len) | |
7 | { | |
8 | static const char * const color_names[] = { | |
9 | "normal", "black", "red", "green", "yellow", | |
10 | "blue", "magenta", "cyan", "white" | |
11 | }; | |
12 | char *end; | |
13 | int i; | |
14 | for (i = 0; i < ARRAY_SIZE(color_names); i++) { | |
15 | const char *str = color_names[i]; | |
16 | if (!strncasecmp(name, str, len) && !str[len]) | |
17 | return i - 1; | |
18 | } | |
19 | i = strtol(name, &end, 10); | |
20 | if (end - name == len && i >= -1 && i <= 255) | |
21 | return i; | |
22 | return -2; | |
23 | } | |
24 | ||
25 | static int parse_attr(const char *name, int len) | |
26 | { | |
27 | static const int attr_values[] = { 1, 2, 4, 5, 7 }; | |
28 | static const char * const attr_names[] = { | |
29 | "bold", "dim", "ul", "blink", "reverse" | |
30 | }; | |
31 | int i; | |
32 | for (i = 0; i < ARRAY_SIZE(attr_names); i++) { | |
33 | const char *str = attr_names[i]; | |
34 | if (!strncasecmp(name, str, len) && !str[len]) | |
35 | return attr_values[i]; | |
36 | } | |
37 | return -1; | |
38 | } | |
39 | ||
40 | void color_parse(const char *value, const char *var, char *dst) | |
41 | { | |
42 | color_parse_mem(value, strlen(value), var, dst); | |
43 | } | |
44 | ||
45 | void color_parse_mem(const char *value, int value_len, const char *var, | |
46 | char *dst) | |
47 | { | |
48 | const char *ptr = value; | |
49 | int len = value_len; | |
50 | int attr = -1; | |
51 | int fg = -2; | |
52 | int bg = -2; | |
53 | ||
54 | if (!strncasecmp(value, "reset", len)) { | |
55 | strcpy(dst, PERF_COLOR_RESET); | |
56 | return; | |
57 | } | |
58 | ||
59 | /* [fg [bg]] [attr] */ | |
60 | while (len > 0) { | |
61 | const char *word = ptr; | |
62 | int val, wordlen = 0; | |
63 | ||
64 | while (len > 0 && !isspace(word[wordlen])) { | |
65 | wordlen++; | |
66 | len--; | |
67 | } | |
68 | ||
69 | ptr = word + wordlen; | |
70 | while (len > 0 && isspace(*ptr)) { | |
71 | ptr++; | |
72 | len--; | |
73 | } | |
74 | ||
75 | val = parse_color(word, wordlen); | |
76 | if (val >= -1) { | |
77 | if (fg == -2) { | |
78 | fg = val; | |
79 | continue; | |
80 | } | |
81 | if (bg == -2) { | |
82 | bg = val; | |
83 | continue; | |
84 | } | |
85 | goto bad; | |
86 | } | |
87 | val = parse_attr(word, wordlen); | |
88 | if (val < 0 || attr != -1) | |
89 | goto bad; | |
90 | attr = val; | |
91 | } | |
92 | ||
93 | if (attr >= 0 || fg >= 0 || bg >= 0) { | |
94 | int sep = 0; | |
95 | ||
96 | *dst++ = '\033'; | |
97 | *dst++ = '['; | |
98 | if (attr >= 0) { | |
99 | *dst++ = '0' + attr; | |
100 | sep++; | |
101 | } | |
102 | if (fg >= 0) { | |
103 | if (sep++) | |
104 | *dst++ = ';'; | |
105 | if (fg < 8) { | |
106 | *dst++ = '3'; | |
107 | *dst++ = '0' + fg; | |
108 | } else { | |
109 | dst += sprintf(dst, "38;5;%d", fg); | |
110 | } | |
111 | } | |
112 | if (bg >= 0) { | |
113 | if (sep++) | |
114 | *dst++ = ';'; | |
115 | if (bg < 8) { | |
116 | *dst++ = '4'; | |
117 | *dst++ = '0' + bg; | |
118 | } else { | |
119 | dst += sprintf(dst, "48;5;%d", bg); | |
120 | } | |
121 | } | |
122 | *dst++ = 'm'; | |
123 | } | |
124 | *dst = 0; | |
125 | return; | |
126 | bad: | |
127 | die("bad color value '%.*s' for variable '%s'", value_len, value, var); | |
128 | } | |
129 | ||
130 | int perf_config_colorbool(const char *var, const char *value, int stdout_is_tty) | |
131 | { | |
132 | if (value) { | |
133 | if (!strcasecmp(value, "never")) | |
134 | return 0; | |
135 | if (!strcasecmp(value, "always")) | |
136 | return 1; | |
137 | if (!strcasecmp(value, "auto")) | |
138 | goto auto_color; | |
139 | } | |
140 | ||
141 | /* Missing or explicit false to turn off colorization */ | |
142 | if (!perf_config_bool(var, value)) | |
143 | return 0; | |
144 | ||
145 | /* any normal truth value defaults to 'auto' */ | |
146 | auto_color: | |
147 | if (stdout_is_tty < 0) | |
148 | stdout_is_tty = isatty(1); | |
149 | if (stdout_is_tty || (pager_in_use() && pager_use_color)) { | |
150 | char *term = getenv("TERM"); | |
151 | if (term && strcmp(term, "dumb")) | |
152 | return 1; | |
153 | } | |
154 | return 0; | |
155 | } | |
156 | ||
157 | int perf_color_default_config(const char *var, const char *value, void *cb) | |
158 | { | |
159 | if (!strcmp(var, "color.ui")) { | |
160 | perf_use_color_default = perf_config_colorbool(var, value, -1); | |
161 | return 0; | |
162 | } | |
163 | ||
164 | return perf_default_config(var, value, cb); | |
165 | } | |
166 | ||
167 | static int color_vfprintf(FILE *fp, const char *color, const char *fmt, | |
168 | va_list args, const char *trail) | |
169 | { | |
170 | int r = 0; | |
171 | ||
172 | if (*color) | |
173 | r += fprintf(fp, "%s", color); | |
174 | r += vfprintf(fp, fmt, args); | |
175 | if (*color) | |
176 | r += fprintf(fp, "%s", PERF_COLOR_RESET); | |
177 | if (trail) | |
178 | r += fprintf(fp, "%s", trail); | |
179 | return r; | |
180 | } | |
181 | ||
182 | ||
183 | ||
184 | int color_fprintf(FILE *fp, const char *color, const char *fmt, ...) | |
185 | { | |
186 | va_list args; | |
187 | int r; | |
188 | va_start(args, fmt); | |
189 | r = color_vfprintf(fp, color, fmt, args, NULL); | |
190 | va_end(args); | |
191 | return r; | |
192 | } | |
193 | ||
194 | int color_fprintf_ln(FILE *fp, const char *color, const char *fmt, ...) | |
195 | { | |
196 | va_list args; | |
197 | int r; | |
198 | va_start(args, fmt); | |
199 | r = color_vfprintf(fp, color, fmt, args, "\n"); | |
200 | va_end(args); | |
201 | return r; | |
202 | } | |
203 | ||
204 | /* | |
205 | * This function splits the buffer by newlines and colors the lines individually. | |
206 | * | |
207 | * Returns 0 on success. | |
208 | */ | |
209 | int color_fwrite_lines(FILE *fp, const char *color, | |
210 | size_t count, const char *buf) | |
211 | { | |
212 | if (!*color) | |
213 | return fwrite(buf, count, 1, fp) != 1; | |
214 | while (count) { | |
215 | char *p = memchr(buf, '\n', count); | |
216 | if (p != buf && (fputs(color, fp) < 0 || | |
217 | fwrite(buf, p ? p - buf : count, 1, fp) != 1 || | |
218 | fputs(PERF_COLOR_RESET, fp) < 0)) | |
219 | return -1; | |
220 | if (!p) | |
221 | return 0; | |
222 | if (fputc('\n', fp) < 0) | |
223 | return -1; | |
224 | count -= p + 1 - buf; | |
225 | buf = p + 1; | |
226 | } | |
227 | return 0; | |
228 | } | |
229 | ||
230 |