| /* |
| * Functions related to storing/retrieving and manipulating DIAL data. |
| */ |
| #include "dial_data.h" |
| #include <stddef.h> |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <string.h> |
| |
| /** |
| * Returns the path where data is stored for the given app. |
| */ |
| static char* getAppPath(char app_name[]) { |
| size_t name_size = strlen(app_name) + sizeof(DIAL_DATA_DIR) + 1; |
| char* filename = (char*) malloc(name_size); |
| filename[0] = 0; |
| strncat(filename, DIAL_DATA_DIR, name_size); |
| strncat(filename, app_name, name_size - sizeof(DIAL_DATA_DIR)); |
| return filename; |
| } |
| |
| void store_dial_data(char app_name[], DIALData *data) { |
| char* filename = getAppPath(app_name); |
| FILE *f = fopen(filename, "w"); |
| if (f == NULL) { |
| printf("Cannot open DIAL data output file: %s\n", filename); |
| exit(1); |
| } |
| for (DIALData *first = data; first != NULL; first = first->next) { |
| fprintf(f, "%s %s\n", first->key, first->value); |
| } |
| fclose(f); |
| } |
| |
| DIALData *retrieve_dial_data(char *app_name) { |
| char* filename = getAppPath(app_name); |
| FILE *f = fopen(filename, "r"); |
| if (f == NULL) { |
| return NULL; // no dial data found, that's fine |
| } |
| DIALData *result = NULL; |
| char key[256]; |
| char value[256]; |
| while (fscanf(f, "%255s %255s\n", key, value) != EOF) { |
| DIALData *newNode = (DIALData *) malloc(sizeof(DIALData)); |
| newNode->key = strdup(key); |
| newNode->value = strdup(value); |
| newNode->next = result; |
| result = newNode; |
| } |
| fclose(f); |
| return result; |
| } |
| |