diff options
Diffstat (limited to 'third_party/git/color.c')
| -rw-r--r-- | third_party/git/color.c | 458 |
1 files changed, 0 insertions, 458 deletions
diff --git a/third_party/git/color.c b/third_party/git/color.c deleted file mode 100644 index 64f52a4f93a2..000000000000 --- a/third_party/git/color.c +++ /dev/null @@ -1,458 +0,0 @@ -#include "cache.h" -#include "config.h" -#include "color.h" - -static int git_use_color_default = GIT_COLOR_AUTO; -int color_stdout_is_tty = -1; - -/* - * The list of available column colors. - */ -const char *column_colors_ansi[] = { - GIT_COLOR_RED, - GIT_COLOR_GREEN, - GIT_COLOR_YELLOW, - GIT_COLOR_BLUE, - GIT_COLOR_MAGENTA, - GIT_COLOR_CYAN, - GIT_COLOR_BOLD_RED, - GIT_COLOR_BOLD_GREEN, - GIT_COLOR_BOLD_YELLOW, - GIT_COLOR_BOLD_BLUE, - GIT_COLOR_BOLD_MAGENTA, - GIT_COLOR_BOLD_CYAN, - GIT_COLOR_RESET, -}; - -enum { - COLOR_BACKGROUND_OFFSET = 10, - COLOR_FOREGROUND_ANSI = 30, - COLOR_FOREGROUND_RGB = 38, - COLOR_FOREGROUND_256 = 38, - COLOR_FOREGROUND_BRIGHT_ANSI = 90, -}; - -/* Ignore the RESET at the end when giving the size */ -const int column_colors_ansi_max = ARRAY_SIZE(column_colors_ansi) - 1; - -/* An individual foreground or background color. */ -struct color { - enum { - COLOR_UNSPECIFIED = 0, - COLOR_NORMAL, - COLOR_ANSI, /* basic 0-7 ANSI colors */ - COLOR_256, - COLOR_RGB - } type; - /* The numeric value for ANSI and 256-color modes */ - unsigned char value; - /* 24-bit RGB color values */ - unsigned char red, green, blue; -}; - -/* - * "word" is a buffer of length "len"; does it match the NUL-terminated - * "match" exactly? - */ -static int match_word(const char *word, int len, const char *match) -{ - return !strncasecmp(word, match, len) && !match[len]; -} - -static int get_hex_color(const char *in, unsigned char *out) -{ - unsigned int val; - val = (hexval(in[0]) << 4) | hexval(in[1]); - if (val & ~0xff) - return -1; - *out = val; - return 0; -} - -/* - * If an ANSI color is recognized in "name", fill "out" and return 0. - * Otherwise, leave out unchanged and return -1. - */ -static int parse_ansi_color(struct color *out, const char *name, int len) -{ - /* Positions in array must match ANSI color codes */ - static const char * const color_names[] = { - "black", "red", "green", "yellow", - "blue", "magenta", "cyan", "white" - }; - int i; - int color_offset = COLOR_FOREGROUND_ANSI; - - if (strncasecmp(name, "bright", 6) == 0) { - color_offset = COLOR_FOREGROUND_BRIGHT_ANSI; - name += 6; - len -= 6; - } - for (i = 0; i < ARRAY_SIZE(color_names); i++) { - if (match_word(name, len, color_names[i])) { - out->type = COLOR_ANSI; - out->value = i + color_offset; - return 0; - } - } - return -1; -} - -static int parse_color(struct color *out, const char *name, int len) -{ - char *end; - long val; - - /* First try the special word "normal"... */ - if (match_word(name, len, "normal")) { - out->type = COLOR_NORMAL; - return 0; - } - - /* Try a 24-bit RGB value */ - if (len == 7 && name[0] == '#') { - if (!get_hex_color(name + 1, &out->red) && - !get_hex_color(name + 3, &out->green) && - !get_hex_color(name + 5, &out->blue)) { - out->type = COLOR_RGB; - return 0; - } - } - - /* Then pick from our human-readable color names... */ - if (parse_ansi_color(out, name, len) == 0) { - return 0; - } - - /* And finally try a literal 256-color-mode number */ - val = strtol(name, &end, 10); - if (end - name == len) { - /* - * Allow "-1" as an alias for "normal", but other negative - * numbers are bogus. - */ - if (val < -1) - ; /* fall through to error */ - else if (val < 0) { - out->type = COLOR_NORMAL; - return 0; - /* Rewrite 0-7 as more-portable standard colors. */ - } else if (val < 8) { - out->type = COLOR_ANSI; - out->value = val + COLOR_FOREGROUND_ANSI; - return 0; - /* Rewrite 8-15 as more-portable aixterm colors. */ - } else if (val < 16) { - out->type = COLOR_ANSI; - out->value = val - 8 + COLOR_FOREGROUND_BRIGHT_ANSI; - return 0; - } else if (val < 256) { - out->type = COLOR_256; - out->value = val; - return 0; - } - } - - return -1; -} - -static int parse_attr(const char *name, size_t len) -{ - static const struct { - const char *name; - size_t len; - int val, neg; - } attrs[] = { -#define ATTR(x, val, neg) { (x), sizeof(x)-1, (val), (neg) } - ATTR("bold", 1, 22), - ATTR("dim", 2, 22), - ATTR("italic", 3, 23), - ATTR("ul", 4, 24), - ATTR("blink", 5, 25), - ATTR("reverse", 7, 27), - ATTR("strike", 9, 29) -#undef ATTR - }; - int negate = 0; - int i; - - if (skip_prefix_mem(name, len, "no", &name, &len)) { - skip_prefix_mem(name, len, "-", &name, &len); - negate = 1; - } - - for (i = 0; i < ARRAY_SIZE(attrs); i++) { - if (attrs[i].len == len && !memcmp(attrs[i].name, name, len)) - return negate ? attrs[i].neg : attrs[i].val; - } - return -1; -} - -int color_parse(const char *value, char *dst) -{ - return color_parse_mem(value, strlen(value), dst); -} - -/* - * Write the ANSI color codes for "c" to "out"; the string should - * already have the ANSI escape code in it. "out" should have enough - * space in it to fit any color. - */ -static char *color_output(char *out, int len, const struct color *c, int background) -{ - int offset = 0; - - if (background) - offset = COLOR_BACKGROUND_OFFSET; - switch (c->type) { - case COLOR_UNSPECIFIED: - case COLOR_NORMAL: - break; - case COLOR_ANSI: - out += xsnprintf(out, len, "%d", c->value + offset); - break; - case COLOR_256: - out += xsnprintf(out, len, "%d;5;%d", COLOR_FOREGROUND_256 + offset, - c->value); - break; - case COLOR_RGB: - out += xsnprintf(out, len, "%d;2;%d;%d;%d", - COLOR_FOREGROUND_RGB + offset, - c->red, c->green, c->blue); - break; - } - return out; -} - -static int color_empty(const struct color *c) -{ - return c->type <= COLOR_NORMAL; -} - -int color_parse_mem(const char *value, int value_len, char *dst) -{ - const char *ptr = value; - int len = value_len; - char *end = dst + COLOR_MAXLEN; - unsigned int attr = 0; - struct color fg = { COLOR_UNSPECIFIED }; - struct color bg = { COLOR_UNSPECIFIED }; - - while (len > 0 && isspace(*ptr)) { - ptr++; - len--; - } - - if (!len) { - dst[0] = '\0'; - return 0; - } - - if (!strncasecmp(ptr, "reset", len)) { - xsnprintf(dst, end - dst, GIT_COLOR_RESET); - return 0; - } - - /* [fg [bg]] [attr]... */ - while (len > 0) { - const char *word = ptr; - struct color c = { COLOR_UNSPECIFIED }; - int val, wordlen = 0; - - while (len > 0 && !isspace(word[wordlen])) { - wordlen++; - len--; - } - - ptr = word + wordlen; - while (len > 0 && isspace(*ptr)) { - ptr++; - len--; - } - - if (!parse_color(&c, word, wordlen)) { - if (fg.type == COLOR_UNSPECIFIED) { - fg = c; - continue; - } - if (bg.type == COLOR_UNSPECIFIED) { - bg = c; - continue; - } - goto bad; - } - val = parse_attr(word, wordlen); - if (0 <= val) - attr |= (1 << val); - else - goto bad; - } - -#undef OUT -#define OUT(x) do { \ - if (dst == end) \ - BUG("color parsing ran out of space"); \ - *dst++ = (x); \ -} while(0) - - if (attr || !color_empty(&fg) || !color_empty(&bg)) { - int sep = 0; - int i; - - OUT('\033'); - OUT('['); - - for (i = 0; attr; i++) { - unsigned bit = (1 << i); - if (!(attr & bit)) - continue; - attr &= ~bit; - if (sep++) - OUT(';'); - dst += xsnprintf(dst, end - dst, "%d", i); - } - if (!color_empty(&fg)) { - if (sep++) - OUT(';'); - dst = color_output(dst, end - dst, &fg, 0); - } - if (!color_empty(&bg)) { - if (sep++) - OUT(';'); - dst = color_output(dst, end - dst, &bg, 1); - } - OUT('m'); - } - OUT(0); - return 0; -bad: - return error(_("invalid color value: %.*s"), value_len, value); -#undef OUT -} - -int git_config_colorbool(const char *var, const char *value) -{ - if (value) { - if (!strcasecmp(value, "never")) - return 0; - if (!strcasecmp(value, "always")) - return 1; - if (!strcasecmp(value, "auto")) - return GIT_COLOR_AUTO; - } - - if (!var) - return -1; - - /* Missing or explicit false to turn off colorization */ - if (!git_config_bool(var, value)) - return 0; - - /* any normal truth value defaults to 'auto' */ - return GIT_COLOR_AUTO; -} - -static int check_auto_color(int fd) -{ - static int color_stderr_is_tty = -1; - int *is_tty_p = fd == 1 ? &color_stdout_is_tty : &color_stderr_is_tty; - if (*is_tty_p < 0) - *is_tty_p = isatty(fd); - if (*is_tty_p || (fd == 1 && pager_in_use() && pager_use_color)) { - if (!is_terminal_dumb()) - return 1; - } - return 0; -} - -int want_color_fd(int fd, int var) -{ - /* - * NEEDSWORK: This function is sometimes used from multiple threads, and - * we end up using want_auto racily. That "should not matter" since - * we always write the same value, but it's still wrong. This function - * is listed in .tsan-suppressions for the time being. - */ - - static int want_auto[3] = { -1, -1, -1 }; - - if (fd < 1 || fd >= ARRAY_SIZE(want_auto)) - BUG("file descriptor out of range: %d", fd); - - if (var < 0) - var = git_use_color_default; - - if (var == GIT_COLOR_AUTO) { - if (want_auto[fd] < 0) - want_auto[fd] = check_auto_color(fd); - return want_auto[fd]; - } - return var; -} - -int git_color_config(const char *var, const char *value, void *cb) -{ - if (!strcmp(var, "color.ui")) { - git_use_color_default = git_config_colorbool(var, value); - return 0; - } - - return 0; -} - -int git_color_default_config(const char *var, const char *value, void *cb) -{ - if (git_color_config(var, value, cb) < 0) - return -1; - - return git_default_config(var, value, cb); -} - -void color_print_strbuf(FILE *fp, const char *color, const struct strbuf *sb) -{ - if (*color) - fprintf(fp, "%s", color); - fprintf(fp, "%s", sb->buf); - if (*color) - fprintf(fp, "%s", GIT_COLOR_RESET); -} - -static int color_vfprintf(FILE *fp, const char *color, const char *fmt, - va_list args, const char *trail) -{ - int r = 0; - - if (*color) - r += fprintf(fp, "%s", color); - r += vfprintf(fp, fmt, args); - if (*color) - r += fprintf(fp, "%s", GIT_COLOR_RESET); - if (trail) - r += fprintf(fp, "%s", trail); - return r; -} - -int color_fprintf(FILE *fp, const char *color, const char *fmt, ...) -{ - va_list args; - int r; - va_start(args, fmt); - r = color_vfprintf(fp, color, fmt, args, NULL); - va_end(args); - return r; -} - -int color_fprintf_ln(FILE *fp, const char *color, const char *fmt, ...) -{ - va_list args; - int r; - va_start(args, fmt); - r = color_vfprintf(fp, color, fmt, args, "\n"); - va_end(args); - return r; -} - -int color_is_nil(const char *c) -{ - return !strcmp(c, "NIL"); -} |