104 lines
2 KiB
C
104 lines
2 KiB
C
#include "dynarray.h"
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#include <limits.h>
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#include <stdlib.h>
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#include <string.h>
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void
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dynarray_init( dynarray_t *a )
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{
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a->count = a->capacity = 0;
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a->items = NULL;
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}
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static void
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dynarray_reserve_more( dynarray_t *a, int count )
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{
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int old_cap = a->capacity;
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int new_cap = old_cap;
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const int max_cap = INT_MAX/sizeof(void*);
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void** new_items;
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int new_count = a->count + count;
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if (count <= 0)
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return;
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if (count > max_cap - a->count)
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abort();
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new_count = a->count + count;
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while (new_cap < new_count) {
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old_cap = new_cap;
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new_cap += (new_cap >> 2) + 4;
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if (new_cap < old_cap || new_cap > max_cap) {
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new_cap = max_cap;
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}
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}
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new_items = realloc(a->items, new_cap*sizeof(void*));
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if (new_items == NULL)
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abort();
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a->items = new_items;
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a->capacity = new_cap;
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}
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void
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dynarray_append( dynarray_t *a, void* item )
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{
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if (a->count >= a->capacity)
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dynarray_reserve_more(a, 1);
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a->items[a->count++] = item;
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}
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void
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dynarray_done( dynarray_t *a )
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{
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free(a->items);
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a->items = NULL;
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a->count = a->capacity = 0;
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}
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// string arrays
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void strlist_init( strlist_t *list )
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{
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dynarray_init(list);
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}
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void strlist_append_b( strlist_t *list, const void* str, size_t slen )
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{
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char *copy = malloc(slen+1);
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memcpy(copy, str, slen);
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copy[slen] = '\0';
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dynarray_append(list, copy);
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}
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void strlist_append_dup( strlist_t *list, const char *str)
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{
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strlist_append_b(list, str, strlen(str));
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}
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void strlist_done( strlist_t *list )
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{
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STRLIST_FOREACH(list, string, free(string));
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dynarray_done(list);
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}
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static int strlist_compare_strings(const void* a, const void* b)
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{
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const char *sa = *(const char **)a;
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const char *sb = *(const char **)b;
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return strcmp(sa, sb);
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}
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void strlist_sort( strlist_t *list )
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{
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if (list->count > 0) {
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qsort(list->items,
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(size_t)list->count,
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sizeof(void*),
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strlist_compare_strings);
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}
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}
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