2 #include "string-list.h"
5 * Parse an argument into a string list. arg should either be a
6 * ':'-separated list of strings, or "-" to indicate an empty string
7 * list (as opposed to "", which indicates a string list containing a
8 * single empty string). list->strdup_strings must be set.
10 static void parse_string_list(struct string_list *list, const char *arg)
12 if (!strcmp(arg, "-"))
15 (void)string_list_split(list, arg, ':', -1);
18 static void write_list(const struct string_list *list)
21 for (i = 0; i < list->nr; i++)
22 printf("[%d]: \"%s\"\n", i, list->items[i].string);
25 static void write_list_compact(const struct string_list *list)
31 printf("%s", list->items[0].string);
32 for (i = 1; i < list->nr; i++)
33 printf(":%s", list->items[i].string);
38 static int prefix_cb(struct string_list_item *item, void *cb_data)
40 const char *prefix = (const char *)cb_data;
41 return starts_with(item->string, prefix);
44 int cmd_main(int argc, const char **argv)
46 if (argc == 5 && !strcmp(argv[1], "split")) {
47 struct string_list list = STRING_LIST_INIT_DUP;
49 const char *s = argv[2];
51 int maxsplit = atoi(argv[4]);
53 i = string_list_split(&list, s, delim, maxsplit);
56 string_list_clear(&list, 0);
60 if (argc == 5 && !strcmp(argv[1], "split_in_place")) {
61 struct string_list list = STRING_LIST_INIT_NODUP;
63 char *s = xstrdup(argv[2]);
65 int maxsplit = atoi(argv[4]);
67 i = string_list_split_in_place(&list, s, delim, maxsplit);
70 string_list_clear(&list, 0);
75 if (argc == 4 && !strcmp(argv[1], "filter")) {
77 * Retain only the items that have the specified prefix.
78 * Arguments: list|- prefix
80 struct string_list list = STRING_LIST_INIT_DUP;
81 const char *prefix = argv[3];
83 parse_string_list(&list, argv[2]);
84 filter_string_list(&list, 0, prefix_cb, (void *)prefix);
85 write_list_compact(&list);
86 string_list_clear(&list, 0);
90 if (argc == 3 && !strcmp(argv[1], "remove_duplicates")) {
91 struct string_list list = STRING_LIST_INIT_DUP;
93 parse_string_list(&list, argv[2]);
94 string_list_remove_duplicates(&list, 0);
95 write_list_compact(&list);
96 string_list_clear(&list, 0);
100 if (argc == 2 && !strcmp(argv[1], "sort")) {
101 struct string_list list = STRING_LIST_INIT_NODUP;
102 struct strbuf sb = STRBUF_INIT;
103 struct string_list_item *item;
105 strbuf_read(&sb, 0, 0);
108 * Split by newline, but don't create a string_list item
109 * for the empty string after the last separator.
111 if (sb.buf[sb.len - 1] == '\n')
112 strbuf_setlen(&sb, sb.len - 1);
113 string_list_split_in_place(&list, sb.buf, '\n', -1);
115 string_list_sort(&list);
117 for_each_string_list_item(item, &list)
120 string_list_clear(&list, 0);
125 fprintf(stderr, "%s: unknown function name: %s\n", argv[0],
126 argv[1] ? argv[1] : "(there was none)");