feat(tools): ls parse LS_COLORS

tools/Makefile.am

@@ -8,7 +8,7 @@ bin_PROGRAMS = mkfs.stpd tools.stpd inspect.stpd
 mkfs_stpd_SOURCES = mkfs/main.c
 mkfs_stpd_LDADD = ../libfs/libfs.a mkfs/bootsector.o
 
-tools_stpd_SOURCES = tools/main.c tools/ls.c tools/copy.c tools/mkdir.c tools/rm.c
+tools_stpd_SOURCES = tools/main.c tools/ls.c tools/ls/colors.c tools/copy.c tools/mkdir.c tools/rm.c
 
 inspect_stpd_SOURCES = inspect/main.c
 

tools/tools/ls.c

@@ -15,6 +15,7 @@
 #endif /* HAVE_GETOPT_H */
 #include <stupidfs.h>
 #include "libfs/fs.h"
+#include "ls/colors.h"
 
 #ifdef HAVE_STRUCT_OPTION
 static struct option long_options[] = {
@@ -172,26 +173,59 @@ print_size(struct fs_inode *ip)
 static void
 print_name(struct stpdfs_dirent *dirent, struct fs_inode *ip)
 {
-	if (color)
+	enum COLORS type;
+
+	type = C_NORM;
+
+	if ((ip->inode.mode & STPDFS_S_IFMT) == STPDFS_S_IFREG)
 	{
-		if ((ip->inode.mode & STPDFS_S_IFMT) == STPDFS_S_IFDIR)
+		type = C_FILE;
+	}
+	else if ((ip->inode.mode & STPDFS_S_IFMT) == STPDFS_S_IFDIR)
 	{
-			printf("\033[01;34m");
+		if (ip->inode.mode & (STPDFS_S_IWOTH | STPDFS_S_ISVTX))
+		{
+			type = C_STICKY_OTH_WRITABLE;
+		}
+		else if (ip->inode.mode & STPDFS_S_ISVTX)
+		{
+			type = C_STICKY;
+		}
+		else if (ip->inode.mode & STPDFS_S_IWOTH)
+		{
+			type = C_OTHER_WRITABLE;
+		}
+		else
+		{
+			type = C_DIR;
+		}
 	}
 	else if ((ip->inode.mode & STPDFS_S_IFMT) == STPDFS_S_IFLNK)
 	{
-			printf("\033[01;36m");
+		type = C_LINK;
+	}
+	else if (ip->inode.mode & STPDFS_S_ISUID)
+	{
+		type = C_SETUID;
+	}
+	else if (ip->inode.mode & STPDFS_S_ISGID)
+	{
+		type = C_SETGID;
 	}
 	else if (ip->inode.mode & STPDFS_S_IXUSR)
 	{
-			printf("\033[01;32m");
+		type = C_EXEC;
 	}
+
+	if (color)
+	{
+		printf("%s%s%s", ls_colors[C_LEFT], ls_colors[type], ls_colors[C_RIGHT]);
 	}
 
 	printf("%s\n", dirent->filename);
 	if (color)
 	{
-		printf("\033[0m");
+		printf("%s%s%s", ls_colors[C_LEFT], ls_colors[C_END], ls_colors[C_RIGHT]);
 	}
 }
 
@@ -294,6 +328,7 @@ cmd_ls(int argc, char **argv)
 			break;
 
 		case 'c':
+			ls_parse_colors();
 			color = 1;
 			break;
 

tools/tools/ls/colors.c

@@ -0,0 +1,64 @@
+#include "colors.h"
+#include <stdlib.h>
+#include <string.h>
+
+char *ls_colors[] = {
+	/* C_NORM    */ "0",
+	/* C_FILE    */ "0",
+	/* C_DIR     */ "34",
+	/* C_LINK    */ "35",
+	/* C_SETUID  */ "30;41",
+	/* C_SETGID  */ "30;46",
+	/* C_STICKY_OTH_WRITABLE */ "30;42",
+	/* C_OTHER_WRITABLE */ "30;43",
+	/* C_STICKY  */ "0",
+	/* C_EXEC    */ "31",
+	/* C_LEFT    */ "\033[",
+	/* C_RIGHT   */ "m",
+	/* C_END     */ "0"
+};
+
+static const struct {
+	char *abrv;
+	enum COLORS type;
+} abrv2type[] = {
+	{"no=", C_NORM},
+	{"fi=", C_FILE},
+	{"di=", C_DIR},
+	{"ln=", C_LINK},
+	{"su=", C_SETUID},
+	{"sg=", C_SETGID},
+	{"tw=", C_STICKY_OTH_WRITABLE},
+	{"ow=", C_OTHER_WRITABLE},
+	{"st=", C_STICKY},
+	{"ex=", C_EXEC},
+	{"lc=", C_LEFT},
+	{"rc=", C_RIGHT},
+	{"ec=", C_END},
+	{NULL, 0}
+};
+
+void
+ls_parse_colors(void)
+{
+	char *colors;
+	char *line;
+	int idx;
+
+	colors = getenv("LS_COLORS");
+	if (colors == NULL) return;
+
+	line = strtok(colors, ":");
+	while (line != NULL)
+	{
+		for (idx = 0; abrv2type[idx].abrv != NULL; idx++)
+		{
+			if (strncmp(abrv2type[idx].abrv, line, 3) == 0)
+			{
+				ls_colors[abrv2type[idx].type] = line + 3;
+				break;
+			}
+		}
+		line = strtok(NULL, ":");
+	}
+}

tools/tools/ls/colors.h

@@ -0,0 +1,24 @@
+#ifndef TOOLS_LS_COLORS_H
+# define TOOLS_LS_COLORS_H 1
+
+enum COLORS {
+	C_NORM,
+	C_FILE,
+	C_DIR,
+	C_LINK,
+	C_SETUID,
+	C_SETGID,
+	C_STICKY_OTH_WRITABLE,
+	C_OTHER_WRITABLE,
+	C_STICKY,
+	C_EXEC,
+	C_LEFT,
+	C_RIGHT,
+	C_END
+};
+
+extern char *ls_colors[];
+
+void ls_parse_colors(void);
+
+#endif /* !TOOLS_LS_COLORS_H */