Andrew's git - gitweb.git/blob - t/helper/test-string-list.c

   1#include "cache.h"
   2#include "string-list.h"
   3
   4/*
   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.
   9 */
  10static void parse_string_list(struct string_list *list, const char *arg)
  11{
  12        if (!strcmp(arg, "-"))
  13                return;
  14
  15        (void)string_list_split(list, arg, ':', -1);
  16}
  17
  18static void write_list(const struct string_list *list)
  19{
  20        int i;
  21        for (i = 0; i < list->nr; i++)
  22                printf("[%d]: \"%s\"\n", i, list->items[i].string);
  23}
  24
  25static void write_list_compact(const struct string_list *list)
  26{
  27        int i;
  28        if (!list->nr)
  29                printf("-\n");
  30        else {
  31                printf("%s", list->items[0].string);
  32                for (i = 1; i < list->nr; i++)
  33                        printf(":%s", list->items[i].string);
  34                printf("\n");
  35        }
  36}
  37
  38static int prefix_cb(struct string_list_item *item, void *cb_data)
  39{
  40        const char *prefix = (const char *)cb_data;
  41        return starts_with(item->string, prefix);
  42}
  43
  44int cmd_main(int argc, const char **argv)
  45{
  46        if (argc == 5 && !strcmp(argv[1], "split")) {
  47                struct string_list list = STRING_LIST_INIT_DUP;
  48                int i;
  49                const char *s = argv[2];
  50                int delim = *argv[3];
  51                int maxsplit = atoi(argv[4]);
  52
  53                i = string_list_split(&list, s, delim, maxsplit);
  54                printf("%d\n", i);
  55                write_list(&list);
  56                string_list_clear(&list, 0);
  57                return 0;
  58        }
  59
  60        if (argc == 5 && !strcmp(argv[1], "split_in_place")) {
  61                struct string_list list = STRING_LIST_INIT_NODUP;
  62                int i;
  63                char *s = xstrdup(argv[2]);
  64                int delim = *argv[3];
  65                int maxsplit = atoi(argv[4]);
  66
  67                i = string_list_split_in_place(&list, s, delim, maxsplit);
  68                printf("%d\n", i);
  69                write_list(&list);
  70                string_list_clear(&list, 0);
  71                free(s);
  72                return 0;
  73        }
  74
  75        if (argc == 4 && !strcmp(argv[1], "filter")) {
  76                /*
  77                 * Retain only the items that have the specified prefix.
  78                 * Arguments: list|- prefix
  79                 */
  80                struct string_list list = STRING_LIST_INIT_DUP;
  81                const char *prefix = argv[3];
  82
  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);
  87                return 0;
  88        }
  89
  90        if (argc == 3 && !strcmp(argv[1], "remove_duplicates")) {
  91                struct string_list list = STRING_LIST_INIT_DUP;
  92
  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);
  97                return 0;
  98        }
  99
 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;
 104
 105                strbuf_read(&sb, 0, 0);
 106
 107                /*
 108                 * Split by newline, but don't create a string_list item
 109                 * for the empty string after the last separator.
 110                 */
 111                if (sb.len && sb.buf[sb.len - 1] == '\n')
 112                        strbuf_setlen(&sb, sb.len - 1);
 113                string_list_split_in_place(&list, sb.buf, '\n', -1);
 114
 115                string_list_sort(&list);
 116
 117                for_each_string_list_item(item, &list)
 118                        puts(item->string);
 119
 120                string_list_clear(&list, 0);
 121                strbuf_release(&sb);
 122                return 0;
 123        }
 124
 125        fprintf(stderr, "%s: unknown function name: %s\n", argv[0],
 126                argv[1] ? argv[1] : "(there was none)");
 127        return 1;
 128}