1 files changed, 134 insertions, 0 deletions
diff --git a/dirconvert.c b/dirconvert.c
new file mode 100644
index 0000000..40c7ed1
--- /dev/null
+++ b/dirconvert.c
@@ -0,0 +1,134 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2021
+ *	Cameron Katri.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY CAMERON KATRI AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL CAMERON KATRI OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#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";
+
+void	usage(void);
+int	tolscolors(char *);
+int	tols_colors(char *);
+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 *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 = strdup("");
+
+	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);
+	free(ls_out);
+	return 0;
+}
+
+void
+usage(void)
+{
+	(void)fprintf(stderr, "usage: %s LSCOLORS|LS_COLORS\n", getprogname());
+	exit(EX_USAGE);
+}