X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=diff.c;h=6a713764831e7521958f4b280f2e1d3911fb3cea;hb=e79992abdb42f8c9e517c60d7e023894a83764a1;hp=e101bfd8c808e832a209d352d677e7d8a666a5ec;hpb=4f12d529abbf233e1df93e7ffa5f2719005a2258;p=git.git

diff --git a/diff.c b/diff.c
index e101bfd8c..6a7137648 100644
--- a/diff.c
+++ b/diff.c
@@ -17,39 +17,15 @@ static int diff_detect_rename_default = 0;
 static int diff_rename_limit_default = -1;
 static int diff_use_color_default = 0;
 
-enum color_diff {
-	DIFF_RESET = 0,
-	DIFF_PLAIN = 1,
-	DIFF_METAINFO = 2,
-	DIFF_FRAGINFO = 3,
-	DIFF_FILE_OLD = 4,
-	DIFF_FILE_NEW = 5,
-};
-
-#define COLOR_NORMAL  ""
-#define COLOR_BOLD    "\033[1m"
-#define COLOR_DIM     "\033[2m"
-#define COLOR_UL      "\033[4m"
-#define COLOR_BLINK   "\033[5m"
-#define COLOR_REVERSE "\033[7m"
-#define COLOR_RESET   "\033[m"
-
-#define COLOR_BLACK   "\033[30m"
-#define COLOR_RED     "\033[31m"
-#define COLOR_GREEN   "\033[32m"
-#define COLOR_YELLOW  "\033[33m"
-#define COLOR_BLUE    "\033[34m"
-#define COLOR_MAGENTA "\033[35m"
-#define COLOR_CYAN    "\033[36m"
-#define COLOR_WHITE   "\033[37m"
-
-static const char *diff_colors[] = {
-	[DIFF_RESET]    = COLOR_RESET,
-	[DIFF_PLAIN]    = COLOR_NORMAL,
-	[DIFF_METAINFO] = COLOR_BOLD,
-	[DIFF_FRAGINFO] = COLOR_CYAN,
-	[DIFF_FILE_OLD] = COLOR_RED,
-	[DIFF_FILE_NEW] = COLOR_GREEN,
+/* "\033[1;38;5;2xx;48;5;2xxm\0" is 23 bytes */
+static char diff_colors[][24] = {
+	"\033[m",	/* reset */
+	"",		/* normal */
+	"\033[1m",	/* bold */
+	"\033[36m",	/* cyan */
+	"\033[31m",	/* red */
+	"\033[32m",	/* green */
+	"\033[33m"	/* yellow */
 };
 
 static int parse_diff_color_slot(const char *var, int ofs)
@@ -64,41 +40,121 @@ static int parse_diff_color_slot(const char *var, int ofs)
 		return DIFF_FILE_OLD;
 	if (!strcasecmp(var+ofs, "new"))
 		return DIFF_FILE_NEW;
+	if (!strcasecmp(var+ofs, "commit"))
+		return DIFF_COMMIT;
 	die("bad config variable '%s'", var);
 }
 
-static const char *parse_diff_color_value(const char *value, const char *var)
-{
-	if (!strcasecmp(value, "normal"))
-		return COLOR_NORMAL;
-	if (!strcasecmp(value, "bold"))
-		return COLOR_BOLD;
-	if (!strcasecmp(value, "dim"))
-		return COLOR_DIM;
-	if (!strcasecmp(value, "ul"))
-		return COLOR_UL;
-	if (!strcasecmp(value, "blink"))
-		return COLOR_BLINK;
-	if (!strcasecmp(value, "reverse"))
-		return COLOR_REVERSE;
-	if (!strcasecmp(value, "reset"))
-		return COLOR_RESET;
-	if (!strcasecmp(value, "black"))
-		return COLOR_BLACK;
-	if (!strcasecmp(value, "red"))
-		return COLOR_RED;
-	if (!strcasecmp(value, "green"))
-		return COLOR_GREEN;
-	if (!strcasecmp(value, "yellow"))
-		return COLOR_YELLOW;
-	if (!strcasecmp(value, "blue"))
-		return COLOR_BLUE;
-	if (!strcasecmp(value, "magenta"))
-		return COLOR_MAGENTA;
-	if (!strcasecmp(value, "cyan"))
-		return COLOR_CYAN;
-	if (!strcasecmp(value, "white"))
-		return COLOR_WHITE;
+static int parse_color(const char *name, int len)
+{
+	static const char * const color_names[] = {
+		"normal", "black", "red", "green", "yellow",
+		"blue", "magenta", "cyan", "white"
+	};
+	char *end;
+	int i;
+	for (i = 0; i < ARRAY_SIZE(color_names); i++) {
+		const char *str = color_names[i];
+		if (!strncasecmp(name, str, len) && !str[len])
+			return i - 1;
+	}
+	i = strtol(name, &end, 10);
+	if (*name && !*end && i >= -1 && i <= 255)
+		return i;
+	return -2;
+}
+
+static int parse_attr(const char *name, int len)
+{
+	static const int attr_values[] = { 1, 2, 4, 5, 7 };
+	static const char * const attr_names[] = {
+		"bold", "dim", "ul", "blink", "reverse"
+	};
+	int i;
+	for (i = 0; i < ARRAY_SIZE(attr_names); i++) {
+		const char *str = attr_names[i];
+		if (!strncasecmp(name, str, len) && !str[len])
+			return attr_values[i];
+	}
+	return -1;
+}
+
+static void parse_diff_color_value(const char *value, const char *var, char *dst)
+{
+	const char *ptr = value;
+	int attr = -1;
+	int fg = -2;
+	int bg = -2;
+
+	if (!strcasecmp(value, "reset")) {
+		strcpy(dst, "\033[m");
+		return;
+	}
+
+	/* [fg [bg]] [attr] */
+	while (*ptr) {
+		const char *word = ptr;
+		int val, len = 0;
+
+		while (word[len] && !isspace(word[len]))
+			len++;
+
+		ptr = word + len;
+		while (*ptr && isspace(*ptr))
+			ptr++;
+
+		val = parse_color(word, len);
+		if (val >= -1) {
+			if (fg == -2) {
+				fg = val;
+				continue;
+			}
+			if (bg == -2) {
+				bg = val;
+				continue;
+			}
+			goto bad;
+		}
+		val = parse_attr(word, len);
+		if (val < 0 || attr != -1)
+			goto bad;
+		attr = val;
+	}
+
+	if (attr >= 0 || fg >= 0 || bg >= 0) {
+		int sep = 0;
+
+		*dst++ = '\033';
+		*dst++ = '[';
+		if (attr >= 0) {
+			*dst++ = '0' + attr;
+			sep++;
+		}
+		if (fg >= 0) {
+			if (sep++)
+				*dst++ = ';';
+			if (fg < 8) {
+				*dst++ = '3';
+				*dst++ = '0' + fg;
+			} else {
+				dst += sprintf(dst, "38;5;%d", fg);
+			}
+		}
+		if (bg >= 0) {
+			if (sep++)
+				*dst++ = ';';
+			if (bg < 8) {
+				*dst++ = '4';
+				*dst++ = '0' + bg;
+			} else {
+				dst += sprintf(dst, "48;5;%d", bg);
+			}
+		}
+		*dst++ = 'm';
+	}
+	*dst = 0;
+	return;
+bad:
 	die("bad config value '%s' for variable '%s'", value, var);
 }
 
@@ -145,7 +201,7 @@ int git_diff_ui_config(const char *var, const char *value)
 	}
 	if (!strncmp(var, "diff.color.", 11)) {
 		int slot = parse_diff_color_slot(var, 11);
-		diff_colors[slot] = parse_diff_color_value(value, var);
+		parse_diff_color_value(value, var, diff_colors[slot]);
 		return 0;
 	}
 	return git_default_config(var, value);
@@ -308,7 +364,7 @@ struct emit_callback {
 	const char **label_path;
 };
 
-static inline const char *get_color(int diff_use_color, enum color_diff ix)
+const char *diff_get_color(int diff_use_color, enum color_diff ix)
 {
 	if (diff_use_color)
 		return diff_colors[ix];
@@ -319,8 +375,8 @@ static void fn_out_consume(void *priv, char *line, unsigned long len)
 {
 	int i;
 	struct emit_callback *ecbdata = priv;
-	const char *set = get_color(ecbdata->color_diff, DIFF_METAINFO);
-	const char *reset = get_color(ecbdata->color_diff, DIFF_RESET);
+	const char *set = diff_get_color(ecbdata->color_diff, DIFF_METAINFO);
+	const char *reset = diff_get_color(ecbdata->color_diff, DIFF_RESET);
 
 	if (ecbdata->label_path[0]) {
 		printf("%s--- %s%s\n", set, ecbdata->label_path[0], reset);
@@ -335,7 +391,7 @@ static void fn_out_consume(void *priv, char *line, unsigned long len)
 		;
 	if (2 <= i && i < len && line[i] == ' ') {
 		ecbdata->nparents = i - 1;
-		set = get_color(ecbdata->color_diff, DIFF_FRAGINFO);
+		set = diff_get_color(ecbdata->color_diff, DIFF_FRAGINFO);
 	}
 	else if (len < ecbdata->nparents)
 		set = reset;
@@ -348,7 +404,7 @@ static void fn_out_consume(void *priv, char *line, unsigned long len)
 			else if (line[i] == '+')
 				color = DIFF_FILE_NEW;
 		}
-		set = get_color(ecbdata->color_diff, color);
+		set = diff_get_color(ecbdata->color_diff, color);
 	}
 	if (len > 0 && line[len-1] == '\n')
 		len--;
@@ -705,8 +761,8 @@ static void builtin_diff(const char *name_a,
 	mmfile_t mf1, mf2;
 	const char *lbl[2];
 	char *a_one, *b_two;
-	const char *set = get_color(o->color_diff, DIFF_METAINFO);
-	const char *reset = get_color(o->color_diff, DIFF_RESET);
+	const char *set = diff_get_color(o->color_diff, DIFF_METAINFO);
+	const char *reset = diff_get_color(o->color_diff, DIFF_RESET);
 
 	a_one = quote_two("a/", name_a);
 	b_two = quote_two("b/", name_b);