[PATCH 09/16] list-files: add -F/--classify

[Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>]

This appends an indicator after the file name if it's executable, a
directory and so on, like in GNU ls. In fact append_indicator() is a
rewrite from get_type_indicator() in coreutils.git commit
7326d1f1a67edf21947ae98194f98c38b6e9e527.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>
---
 builtin/list-files.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/builtin/list-files.c b/builtin/list-files.c
index 316f59c..97fa8bf 100644
--- a/builtin/list-files.c
+++ b/builtin/list-files.c
@@ -15,6 +15,7 @@ static unsigned int colopts;
 static int max_depth;
 static int show_dirs;
 static int use_color = -1;
+static int show_indicator;
 
 static const char * const ls_usage[] = {
 	N_("git list-files [options] [<pathspec>...]"),
@@ -31,9 +32,33 @@ struct option ls_options[] = {
 	OPT_SET_INT('R', "recursive", &max_depth,
 		    N_("shortcut for --max-depth=-1"), -1),
 	OPT__COLOR(&use_color, N_("show color")),
+	OPT_BOOL('F', "classify", &show_indicator,
+		 N_("append indicator (one of */=>@|) to entries")),
 	OPT_END()
 };
 
+static void append_indicator(struct strbuf *sb, mode_t mode)
+{
+	char c = 0;
+	if (S_ISREG(mode)) {
+		if (mode & (S_IXUSR | S_IXGRP | S_IXOTH))
+			c = '*';
+	} else if (S_ISDIR(mode))
+		c = '/';
+	else if (S_ISLNK(mode))
+		c = '@';
+	else if (S_ISFIFO(mode))
+		c = '|';
+	else if (S_ISSOCK(mode))
+		c = '=';
+#ifdef S_ISDOOR
+	else if (S_ISDOOR(mode))
+		c = '>';
+#endif
+	if (c)
+		strbuf_addch(sb, c);
+}
+
 static void add_one(struct string_list *result, const char *name, int mode,
 		    const char *tag)
 {
@@ -47,6 +72,8 @@ static void add_one(struct string_list *result, const char *name, int mode,
 		color_filename(&sb, name, quoted.buf, mode, 1);
 		strbuf_release(&quoted);
 	}
+	if (show_indicator)
+		append_indicator(&sb, mode);
 	strbuf_insert(&sb, 0, "   ", 3);
 	sb.buf[0] = tag[0];
 	sb.buf[1] = tag[1];
-- 
2.3.0.rc1.137.g477eb31

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