94 lines
2.8 KiB
C
94 lines
2.8 KiB
C
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#include "doubly-linked-list.h"
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#include <stdatomic.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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dll_list *list = NULL;
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dll_node *head = NULL;
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char *list_string = NULL;
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#define ASSERT_STR_EQ(expected, actual) \
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{ \
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if (strcmp(expected, actual) != 0) { \
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fprintf(stderr, \
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"strings don't match. expected: \"%s\", actual: \"%s\"\n", \
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expected, actual); \
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cleanup(); \
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return 1; \
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} \
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}
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char *list_to_string(dll_list *list) {
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char *list_string = malloc(sizeof(char));
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list_string[0] = '\0';
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dll_node *current_node = list->head;
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while (current_node != NULL) {
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// TODO: There's probably a better way to do this. Find it
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int list_string_length = strlen(list_string);
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int new_length = list_string_length + strlen(current_node->value) + 1;
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if (current_node->previous != NULL) {
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new_length += 2; // Add space for another ", "
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}
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char *new_list_string = realloc(list_string, new_length);
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if (new_list_string == NULL) {
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fprintf(stderr, "error: failed to reallocate memory for list string\n");
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return NULL;
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} else {
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list_string = new_list_string;
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}
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if (list_string_length > 0 && current_node->previous != NULL) {
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strcpy(&list_string[list_string_length], ", ");
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list_string_length += 2;
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}
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strcpy(&list_string[list_string_length], current_node->value);
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list_string[new_length - 1] = '\0';
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current_node = current_node->next;
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}
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return list_string;
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}
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void cleanup() {
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if (list != NULL) {
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dll_list_free(list);
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list = NULL;
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}
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if (head != NULL) {
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dll_node_free(head);
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head = NULL;
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}
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if (list_string != NULL) {
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free(list_string);
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list_string = NULL;
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}
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}
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int main(int argc, char **argv) {
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list = dll_list_new();
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dll_node *head = dll_node_new("0");
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dll_list_append(list, head);
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head = NULL;
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// TODO: Extract test utilities to shared file
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list_string = list_to_string(list);
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ASSERT_STR_EQ("0", list_string);
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dll_node *third = dll_node_new("2");
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dll_list_insert(list, third, 2);
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free(list_string);
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list_string = list_to_string(list);
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ASSERT_STR_EQ("0, 2", list_string);
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dll_node *second = dll_node_new("1");
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dll_list_insert(list, second, 1);
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free(list_string);
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list_string = list_to_string(list);
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ASSERT_STR_EQ("0, 1, 2", list_string);
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cleanup();
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return 0;
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}
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