diff options
Diffstat (limited to 'myal.c')
| -rw-r--r-- | myal.c | 231 |
1 files changed, 0 insertions, 231 deletions
@@ -1,231 +0,0 @@ -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> - -const char *filename = "./anime.csv"; - -typedef struct { - char name[80]; - char episode[5]; -} entry_t; - -typedef enum { - MATCH_MODE, - SEARCH_MODE, - APPEND_MODE, - EDIT_MODE, - PRINT_MODE -} mode_e; - -void print_help() -{ - printf("usage: myal [-s <name>] [-ae <name> <episode>] \n"); - printf(" Prints all entries by default \n"); - printf(" -m <name> Prints all anime containing the given string \n"); - printf(" -s <name> Search for a specific anime by name \n"); - printf(" -a <name> <number> Append new anime and episode to file \n"); - printf(" -e <name> <number> Edit the episode number of an anime \n"); - printf("\n"); -} - -char *getfield(char *line, int num) -{ - char *tok; - for (tok = strtok(line, ","); tok && *tok; tok = strtok(NULL, ",")) { - if (!--num) { - return tok; - } - } - return NULL; -} - -// print everything -void print_all() -{ - FILE *fp = fopen(filename, "r"); - if (fp == NULL) { - fprintf(stderr, "ERROR: no such file\n"); - exit(EXIT_FAILURE); - } - - char line[100]; - while (fgets(line, sizeof(line), fp)) { - char *tmp = strdup(line); - char *name = getfield(tmp, 1); - tmp = strdup(line); - char *episode = getfield(tmp, 2); - - printf("Name: %s Episode: %s", name, episode); - free(tmp); - } - fclose(fp); -} - -// print any entry containing the search string -void print_matches(const char *sel) -{ - FILE *fp = fopen(filename, "r"); - if (fp == NULL) { - fprintf(stderr, "ERROR: no such file\n"); - exit(EXIT_FAILURE); - } - - char line[100]; - while (fgets(line, sizeof(line), fp)) { - char *tmp = strdup(line); - char *name = getfield(tmp, 1); - tmp = strdup(line); - char *episode = getfield(tmp, 2); - - if (strcasestr(name, sel) != NULL) { - printf("Name: %s Episode: %s", name, episode); - } - free(tmp); - } - fclose(fp); -} - -// return one single entry matching the search string from the first character -entry_t *get_entry(const char *sel) -{ - FILE *fp = fopen(filename, "r"); - if (fp == NULL) { - fprintf(stderr, "ERROR: no such file\n"); - exit(EXIT_FAILURE); - } - - entry_t *res = malloc(sizeof(entry_t)); - char line[100]; - while (fgets(line, sizeof(line), fp)) { - char *tmp = strdup(line); - char *name = getfield(tmp, 1); - tmp = strdup(line); - char *episode = getfield(tmp, 2); - - if (strncasecmp(name, sel, strlen(sel)) == 0) { - strcpy(res->name, name); - strcpy(res->episode, episode); - break; - } - free(tmp); - } - fclose(fp); - return res; -} - -// append new entry to the end of the csv -void append_entry(const char *name, const char *ep) -{ - FILE *fp = fopen(filename, "a"); - if (fp == NULL) { - fprintf(stderr, "ERROR: no such file\n"); - exit(EXIT_FAILURE); - } - - entry_t *entry = malloc(sizeof(entry_t)); - strncpy(entry->name, name, sizeof(entry->name)); - strncpy(entry->episode, ep, sizeof(entry->episode)); - fprintf(fp, "%s,%s\n", entry->name, entry->episode); -} - -// edit the episode number of an anime -void edit_entry(const char *name, const char *new_ep) -{ - FILE *fp_old = fopen(filename, "r"); - FILE *fp_new = fopen("temp.csv", "w"); - if (fp_old == NULL || fp_new == NULL) { - fprintf(stderr, "ERROR: no such file\n"); - exit(EXIT_FAILURE); - } - - char line[100]; - while (fgets(line, sizeof(line), fp_old)) { - char *tmp = strdup(line); - char *old_name = getfield(tmp, 1); - tmp = strdup(line); - char *old_ep = getfield(tmp, 2); - - if (strcasestr(old_name, name) != NULL) { - fprintf(fp_new, "%s,%s\n", old_name, new_ep); - } else { - fprintf(fp_new, "%s,%s", old_name, old_ep); - } - free(tmp); - } - remove(filename); - rename("temp.csv", filename); - fclose(fp_old); - fclose(fp_new); -} - -int main(int argc, char **argv) -{ - mode_e mode = PRINT_MODE; - int opt; - while ((opt = getopt(argc, argv, "msae")) != -1) { - switch (opt) { - case 'm': mode = MATCH_MODE; break; - case 's': mode = SEARCH_MODE; break; - case 'a': mode = APPEND_MODE; break; - case 'e': mode = EDIT_MODE; break; - default: - print_help(); - exit(EXIT_FAILURE); - } - } - - if (optind >= argc && mode != PRINT_MODE) { - fprintf(stderr, "ERROR: missing argument\n"); - print_help(); - exit(EXIT_FAILURE); - } - - if (optind == 1 && argc == 2) { - fprintf(stderr, "ERROR: no option for argument given\n"); - print_help(); - exit(EXIT_FAILURE); - } - - switch (mode) { - case MATCH_MODE: - print_matches(argv[optind]); - break; - case SEARCH_MODE: - // maybe useful for sanitizing input, but not needed for now - // - // size_t buffer_size = strlen(argv[optind]) + 1; - // char *selection = (char*)malloc(buffer_size); - - // if (selection == NULL) { - // fprintf(stderr, "ERROR: failed to allocate memory for buffer\n"); - // exit(EXIT_FAILURE); - // } - - // strncpy(selection, argv[optind], buffer_size - 1); - // selection[buffer_size - 1] = '\0'; - // [...] - // free(selection); - - entry_t *res = get_entry(argv[optind]); - if (res->name[0] == '\0') { - printf("Entry not found"); - break; - } - printf("Name: %s Episode: %s", res->name, res->episode); - break; - case APPEND_MODE: - append_entry(argv[optind], argv[optind+1]); - break; - case EDIT_MODE: - edit_entry(argv[optind], argv[optind+1]); - break; - case PRINT_MODE: - print_all(); - break; - default: - print_help(); - break; - } - return 0; -} |