[PATCH 14/14] wt-status: Show orphaned entries in "git status" output

["Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>]

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
 wt-status.c |   39 +++++++++++++++++++++++++++++++++++++++
 wt-status.h |    1 +
 2 files changed, 40 insertions(+), 0 deletions(-)

diff --git a/wt-status.c b/wt-status.c
index 7cf890f..4c237e2 100644
--- a/wt-status.c
+++ b/wt-status.c
@@ -20,6 +20,7 @@ static char wt_status_colors[][COLOR_MAXLEN] = {
 	"\033[31m", /* WT_STATUS_CHANGED: red */
 	"\033[31m", /* WT_STATUS_UNTRACKED: red */
 	"\033[31m", /* WT_STATUS_NOBRANCH: red */
+	"\033[31m", /* WT_STATUS_ORPHANED: red */
 };
 
 enum untracked_status_type show_untracked_files = SHOW_NORMAL_UNTRACKED_FILES;
@@ -83,6 +84,16 @@ static void wt_status_print_dirty_header(struct wt_status *s,
 	color_fprintf_ln(s->fp, c, "#");
 }
 
+static void wt_status_print_orphaned_header(struct wt_status *s)
+{
+	const char *c = color(WT_STATUS_HEADER);
+	color_fprintf_ln(s->fp, c, "# Orphaned files:");
+	color_fprintf_ln(s->fp, c, "#   (these are tracked, but marked no-checkout and should not be present)");
+	color_fprintf_ln(s->fp, c, "#   (use \"git update-index --checkout\" to remove no-checkout status)");
+	color_fprintf_ln(s->fp, c, "#   (otherwise remove them to avoid confusion because git will ignore them)");
+	color_fprintf_ln(s->fp, c, "#");
+}
+
 static void wt_status_print_untracked_header(struct wt_status *s)
 {
 	const char *c = color(WT_STATUS_HEADER);
@@ -233,6 +244,33 @@ static void wt_status_print_changed(struct wt_status *s)
 	run_diff_files(&rev, 0);
 }
 
+static void wt_status_print_orphaned(struct wt_status *s)
+{
+	int i, show_header = 0;
+	struct stat st;
+	struct strbuf buf;
+
+	strbuf_init(&buf, 0);
+	for (i = 0; i < the_index.cache_nr; i++) {
+		struct cache_entry *ce = the_index.cache[i];
+
+		if (ce_checkout(ce) || lstat(ce->name, &st))
+			continue;
+
+		if (!show_header) {
+			wt_status_print_orphaned_header(s);
+			show_header = 1;
+		}
+
+		color_fprintf(s->fp, color(WT_STATUS_HEADER), "#\t");
+		color_fprintf_ln(s->fp, color(WT_STATUS_ORPHANED), "%s",
+				 quote_path(ce->name, -1, &buf, s->prefix));
+	}
+
+	if (show_header)
+		color_fprintf_ln(s->fp, color(WT_STATUS_HEADER),"#");
+}
+
 static void wt_status_print_submodule_summary(struct wt_status *s)
 {
 	struct child_process sm_summary;
@@ -373,6 +411,7 @@ void wt_status_print(struct wt_status *s)
 	}
 
 	wt_status_print_changed(s);
+	wt_status_print_orphaned(s);
 	if (wt_status_submodule_summary)
 		wt_status_print_submodule_summary(s);
 	if (show_untracked_files)
diff --git a/wt-status.h b/wt-status.h
index 78add09..52f1eb5 100644
--- a/wt-status.h
+++ b/wt-status.h
@@ -9,6 +9,7 @@ enum color_wt_status {
 	WT_STATUS_CHANGED,
 	WT_STATUS_UNTRACKED,
 	WT_STATUS_NOBRANCH,
+	WT_STATUS_ORPHANED,
 };
 
 enum untracked_status_type {
-- 
1.6.0.96.g2fad1.dirty