color.h

   1 #ifndef COLOR_H
   2 #define COLOR_H
   3
   4 struct strbuf;
   5
   6 /*
   7  * The maximum length of ANSI color sequence we would generate:
   8  * - leading ESC '['            2
   9  * - attr + ';'                 2 * num_attr (e.g. "1;")
  10  * - no-attr + ';'              3 * num_attr (e.g. "22;")
  11  * - fg color + ';'             17 (e.g. "38;2;255;255;255;")
  12  * - bg color + ';'             17 (e.g. "48;2;255;255;255;")
  13  * - terminating 'm' NUL        2
  14  *
  15  * The above overcounts by one semicolon but it is close enough.
  16  *
  17  * The space for attributes is also slightly overallocated, as
  18  * the negation for some attributes is the same (e.g., nobold and nodim).
  19  *
  20  * We allocate space for 7 attributes.
  21  */
  22 #define COLOR_MAXLEN 75
  23
  24 #define GIT_COLOR_NORMAL        ""
  25 #define GIT_COLOR_RESET         "\033[m"
  26 #define GIT_COLOR_BOLD          "\033[1m"
  27 #define GIT_COLOR_RED           "\033[31m"
  28 #define GIT_COLOR_GREEN         "\033[32m"
  29 #define GIT_COLOR_YELLOW        "\033[33m"
  30 #define GIT_COLOR_BLUE          "\033[34m"
  31 #define GIT_COLOR_MAGENTA       "\033[35m"
  32 #define GIT_COLOR_CYAN          "\033[36m"
  33 #define GIT_COLOR_BOLD_RED      "\033[1;31m"
  34 #define GIT_COLOR_BOLD_GREEN    "\033[1;32m"
  35 #define GIT_COLOR_BOLD_YELLOW   "\033[1;33m"
  36 #define GIT_COLOR_BOLD_BLUE     "\033[1;34m"
  37 #define GIT_COLOR_BOLD_MAGENTA  "\033[1;35m"
  38 #define GIT_COLOR_BOLD_CYAN     "\033[1;36m"
  39 #define GIT_COLOR_BG_RED        "\033[41m"
  40 #define GIT_COLOR_BG_GREEN      "\033[42m"
  41 #define GIT_COLOR_BG_YELLOW     "\033[43m"
  42 #define GIT_COLOR_BG_BLUE       "\033[44m"
  43 #define GIT_COLOR_BG_MAGENTA    "\033[45m"
  44 #define GIT_COLOR_BG_CYAN       "\033[46m"
  45
  46 /* A special value meaning "no color selected" */
  47 #define GIT_COLOR_NIL "NIL"
  48
  49 /*
  50  * The first three are chosen to match common usage in the code, and what is
  51  * returned from git_config_colorbool. The "auto" value can be returned from
  52  * config_colorbool, and will be converted by want_color() into either 0 or 1.
  53  */
  54 #define GIT_COLOR_UNKNOWN -1
  55 #define GIT_COLOR_NEVER  0
  56 #define GIT_COLOR_ALWAYS 1
  57 #define GIT_COLOR_AUTO   2
  58
  59 /* A default list of colors to use for commit graphs and show-branch output */
  60 extern const char *column_colors_ansi[];
  61 extern const int column_colors_ansi_max;
  62
  63 /*
  64  * Generally the color code will lazily figure this out itself, but
  65  * this provides a mechanism for callers to override autodetection.
  66  */
  67 extern int color_stdout_is_tty;
  68
  69 /*
  70  * Use the first one if you need only color config; the second is a convenience
  71  * if you are just going to change to git_default_config, too.
  72  */
  73 int git_color_config(const char *var, const char *value, void *cb);
  74 int git_color_default_config(const char *var, const char *value, void *cb);
  75
  76 /*
  77  * Set the color buffer (which must be COLOR_MAXLEN bytes)
  78  * to the raw color bytes; this is useful for initializing
  79  * default color variables.
  80  */
  81 void color_set(char *dst, const char *color_bytes);
  82
  83 int git_config_colorbool(const char *var, const char *value);
  84 int want_color(int var);
  85 int color_parse(const char *value, char *dst);
  86 int color_parse_mem(const char *value, int len, char *dst);
  87 __attribute__((format (printf, 3, 4)))
  88 int color_fprintf(FILE *fp, const char *color, const char *fmt, ...);
  89 __attribute__((format (printf, 3, 4)))
  90 int color_fprintf_ln(FILE *fp, const char *color, const char *fmt, ...);
  91 void color_print_strbuf(FILE *fp, const char *color, const struct strbuf *sb);
  92
  93 int color_is_nil(const char *color);
  94
  95 #endif /* COLOR_H */