From 7f89eb3cfff465cf32d03a2ae6919252eae67e9b Mon Sep 17 00:00:00 2001 From: David Oberhollenzer Date: Thu, 21 Sep 2023 15:53:14 +0200 Subject: libutil: add a string list helper to replace some of the adhoc ones Signed-off-by: David Oberhollenzer --- lib/util/src/strlist.c | 71 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 lib/util/src/strlist.c (limited to 'lib/util/src/strlist.c') diff --git a/lib/util/src/strlist.c b/lib/util/src/strlist.c new file mode 100644 index 0000000..9d1fd78 --- /dev/null +++ b/lib/util/src/strlist.c @@ -0,0 +1,71 @@ +/* SPDX-License-Identifier: LGPL-3.0-or-later */ +/* + * strlist.c + * + * Copyright (C) 2023 David Oberhollenzer + */ +#include "config.h" +#include "util/strlist.h" +#include "util/util.h" +#include "compat.h" + +#include + +void strlist_cleanup(strlist_t *list) +{ + for (size_t i = 0; i < list->count; ++i) + free(list->strings[i]); + + free(list->strings); + memset(list, 0, sizeof(*list)); +} + +int strlist_init_copy(strlist_t *dst, const strlist_t *src) +{ + memset(dst, 0, sizeof(*dst)); + + dst->strings = alloc_array(sizeof(char *), src->capacity); + if (dst->strings == NULL) + return -1; + + dst->count = src->count; + dst->capacity = src->capacity; + + for (size_t i = 0; i < src->count; ++i) { + dst->strings[i] = strdup(src->strings[i]); + + if (dst->strings[i] == NULL) { + dst->count = i; + strlist_cleanup(dst); + return -1; + } + } + + return 0; +} + +int strlist_append(strlist_t *list, const char *str) +{ + if (list->count == list->capacity) { + size_t new_cap = list->capacity ? (list->capacity * 2) : 128; + size_t new_sz; + char **new; + + if (SZ_MUL_OV(new_cap, sizeof(char *), &new_sz)) + return -1; + + new = realloc(list->strings, new_sz); + if (new == NULL) + return -1; + + list->capacity = new_cap; + list->strings = new; + } + + list->strings[list->count] = strdup(str); + if (list->strings[list->count] == NULL) + return -1; + + list->count += 1; + return 0; +} -- cgit v1.2.3