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mpd_add_to_queue.c (3279B)

      1 #include <mpd/client.h>
      2 #include <stdbool.h>
      3 #include <stdio.h>
      4 #include <stdlib.h>
      5 #include <string.h>
      6 #include <unistd.h>
      7 
      8 // #define DEBUG
      9 #ifdef DEBUG
     10 #define D(x)                                                                   \
     11   do {                                                                         \
     12     x;                                                                         \
     13   } while (0)
     14 #else
     15 #define D(x)                                                                   \
     16   do {                                                                         \
     17   } while (0)
     18 #endif
     19 
     20 #define DEFAULT_HOST "localhost"
     21 #define DEFAULT_PORT 6600
     22 
     23 struct mpd_connection *conn() {
     24   const char *host = getenv("MPD_HOST");
     25   if (host == NULL || strlen(host) == 0) {
     26     host = DEFAULT_HOST;
     27   }
     28 
     29   unsigned port = DEFAULT_PORT;
     30   const char *port_str = getenv("MPD_PORT");
     31   if (port_str != NULL && strlen(port_str) > 0) {
     32     port = (unsigned)atoi(port_str);
     33   }
     34 
     35   struct mpd_connection *c = mpd_connection_new(host, port, 0);
     36   if (c == NULL) {
     37     fprintf(stderr, "Failed to create MPD connection object\n");
     38     return NULL;
     39   }
     40 
     41   enum mpd_error err = mpd_connection_get_error(c);
     42   if (err != 0) {
     43     fprintf(stderr, "Error connecting to MPD (%s:%u): %s (code: %u)\n", host,
     44             port, mpd_connection_get_error_message(c), err);
     45     mpd_connection_free(c);
     46     return NULL;
     47   }
     48 #ifdef PASS
     49   const char *pass = PASS;
     50   if (mpd_run_password(c, pass) == false) {
     51     fprintf(stderr, "MPD authentication failed: %s\n",
     52             mpd_connection_get_error_message(c));
     53     mpd_connection_free(c);
     54     return NULL;
     55   }
     56 #endif
     57   return c;
     58 }
     59 
     60 int main(int argc, char *argv[]) {
     61   FILE *input = stdin;
     62 
     63   if (argc > 1) {
     64     input = fopen(argv[1], "r");
     65     if (input == NULL) {
     66       perror("Error opening file");
     67       return 1;
     68     }
     69   } else if (isatty(STDIN_FILENO)) {
     70     fprintf(stderr, "Reading from stdin... (Press Ctrl+D to finish, or provide "
     71                     "a filename as argument)\n");
     72   }
     73 
     74   struct mpd_connection *c = conn();
     75   if (c == NULL) {
     76     if (input != stdin)
     77       fclose(input);
     78     return -1;
     79   }
     80 
     81   char *line = NULL;
     82   size_t len = 0;
     83   ssize_t read_bytes;
     84   int added_count = 0;
     85   int failed_count = 0;
     86 
     87   while ((read_bytes = getline(&line, &len, input)) != -1) {
     88     if (read_bytes > 0 && line[read_bytes - 1] == '\n') {
     89       line[read_bytes - 1] = '\0';
     90       read_bytes--;
     91     }
     92     if (read_bytes > 0 && line[read_bytes - 1] == '\r') {
     93       line[read_bytes - 1] = '\0';
     94       read_bytes--;
     95     }
     96 
     97     if (read_bytes == 0)
     98       continue;
     99     if (line[0] == '#')
    100       continue;
    101 
    102     if (!mpd_run_add(c, line)) {
    103       fprintf(stderr, "Failed to add track: %s (Error: %s)\n", line,
    104               mpd_connection_get_error_message(c));
    105       failed_count++;
    106       if (!mpd_connection_clear_error(c))
    107         break;
    108     } else {
    109       printf("Added: %s\n", line);
    110       added_count++;
    111     }
    112   }
    113 
    114   printf("\nSummary: Added %d tracks, failed to add %d tracks.\n", added_count,
    115          failed_count);
    116 
    117   free(line);
    118   if (input != stdin)
    119     fclose(input);
    120   mpd_connection_free(c);
    121 
    122   return 0;
    123 }