[PATCH v7 06/10] git-clean: rm -i style interactive cleaning

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Add a "rm -i" style interactive cleaning method. User must confirm one
by one before starting to delete.

Signed-off-by: Jiang Xin <worldhello.net@xxxxxxxxx>
---
 builtin/clean.c | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/builtin/clean.c b/builtin/clean.c
index 75e37..5bb36 100644
--- a/builtin/clean.c
+++ b/builtin/clean.c
@@ -721,6 +721,40 @@ static int edit_by_numbers_cmd()
 	return 0;
 }
 
+static int rm_i_cmd()
+{
+	struct strbuf confirm = STRBUF_INIT;
+	struct strbuf buf = STRBUF_INIT;
+	struct string_list_item *item;
+	const char *qname;
+	int changed = 0, eof = 0;
+
+	for_each_string_list_item(item, &del_list) {
+		/* Ctrl-D should stop removing files */
+		if (!eof) {
+			qname = quote_path_relative(item->string, -1, &buf, *the_prefix);
+			printf(_("remove %s ? "), qname);
+			if (strbuf_getline(&confirm, stdin, '\n') != EOF) {
+				strbuf_trim(&confirm);
+			} else {
+				putchar('\n');
+				eof = 1;
+			}
+		}
+		if (!confirm.len || !strncasecmp(confirm.buf, "no", confirm.len)) {
+			*item->string = '\0';
+			changed++;
+		}
+	}
+
+	if (changed)
+		string_list_remove_empty_items(&del_list, 0);
+
+	strbuf_release(&buf);
+	strbuf_release(&confirm);
+	return MENU_RETURN_NO_LOOP;
+}
+
 static int quit_cmd()
 {
 	string_list_clear(&del_list, 0);
@@ -735,6 +769,7 @@ static int help_cmd(int x)
 		    "clean            - start cleaning\n"
 		    "edit by patterns - exclude items from deletion\n"
 		    "edit by numbers  - select items to be deleted by numbers\n"
+		    "rm -i            - delete items one by one, like \"rm -i\"\n"
 		    "quit             - stop cleaning\n"
 		    "help             - this screen\n"
 		    "?                - help for prompt selection"
@@ -753,6 +788,7 @@ static void interactive_main_loop()
 			{'c', "clean",			0, clean_cmd},
 			{'p', "edit by patterns",	0, edit_by_patterns_cmd},
 			{'n', "edit by numbers",	0, edit_by_numbers_cmd},
+			{'i', "rm -i",			0, rm_i_cmd},
 			{'q', "quit",			0, quit_cmd},
 			{'h', "help",			0, help_cmd},
 		};
-- 
1.8.3.rc1.341.g1c24ab7

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