1 files changed, 104 insertions, 0 deletions
diff --git a/lscolors.c b/lscolors.c
new file mode 100644
index 0000000..41e7b0b
--- /dev/null
+++ b/lscolors.c
@@ -0,0 +1,104 @@
+#include <ctype.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sysexits.h>
+
+const char *types[11] = { "di", "ln", "so", "pi", "ex", "bd", "cd", "su", "sg",
+	"tw", "ow" };
+const char col[8] = "abcdefgh";
+
+int tolscolors(char *);
+int tols_colors(char *);
+void usage(void);
+char numtocol(char, bool);
+
+int
+main(int argc, char **argv)
+{
+	if (argc != 2)
+		usage();
+
+	if (strchr(argv[1], '='))
+		return tolscolors(argv[1]);
+	else
+		return tols_colors(argv[1]);
+
+	/* NOTREACHED */
+	return 0;
+}
+
+int
+tolscolors(char *dircolor)
+{
+	char *color, *ent, *buf, *val, *val2;
+	char out[22] = "xxxxxxxxxxxxxxxxxxxxxx";
+	bool bold = false;
+
+	while ((ent = buf = strsep(&dircolor, ":")) != NULL) {
+		for (int i = 0; i < 11; i++) {
+			if (strncmp(ent, types[i], strlen(types[i])) == 0) {
+				bold = false;
+				while ((val = strsep(&buf, "=")) != NULL) {
+					while ((val2 = strsep(&val, ";")) !=
+					    NULL) {
+						if (strcmp(val2, "01") == 0) {
+							bold = true;
+						} else if (val2[0] == '3') {
+							out[2 * i] = numtocol(
+							    val2[1], bold);
+						} else if (val2[0] == '4') {
+							out[2 * i + 1] =
+							    numtocol(
+								val2[1], NULL);
+						}
+					}
+				}
+			}
+		}
+	}
+	printf("%s\n", out);
+	return 0;
+}
+
+char
+numtocol(char c, bool bold)
+{
+	char buf = col[strtol(&c, NULL, 10)];
+	if (bold)
+		return toupper(buf);
+	else
+		return buf;
+}
+
+int
+tols_colors(char *lscolors)
+{
+	char *ls_out;
+	strcpy(ls_out, "");
+
+	for (int i = 0; i < 11; i++) {
+		if (lscolors[2 * i] == 'x' && lscolors[2 * i + 1] == 'x')
+			continue;
+		sprintf(ls_out + strlen(ls_out), "%s=", types[i]);
+		if (isupper(lscolors[2 * i]))
+			sprintf(ls_out + strlen(ls_out), "01;");
+		if (tolower(lscolors[2 * i])  == 'x')
+			sprintf(ls_out + strlen(ls_out), "00");
+		else if (tolower(lscolors[2 * i] != 'x'))
+			sprintf(ls_out + strlen(ls_out), "3%i", (int)(strchr(col, tolower(lscolors[2 * i])) - col));
+		if (tolower(lscolors[2 * i + 1])  != 'x')
+			sprintf(ls_out + strlen(ls_out), ";4%i", (int)(strchr(col, tolower(lscolors[2 * i])) - col));
+		sprintf(ls_out + strlen(ls_out), ":");
+	}
+	printf("%s\n", ls_out);
+	return 0;
+}
+
+void
+usage(void)
+{
+	(void)fprintf(stderr, "%s\n", "usage: lscolors format_code ");
+	exit(EX_USAGE);
+}