lib.c

#include <dirent.h>
#include <limits.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "audio_len.h"

bool isAudioFiles(char const *name) {
  size_t len = strlen(name);
  if (len > 4 &&
      (strcmp(name + len - 4, ".mp3") && strcmp(name + len - 4, ".mp4") &&
       strcmp(name + len - 4, ".wav")) == 0)
    return true;
  else
    return false;
}

void process(fileDir d) {
  bool isAudioFiles(char const *name);
  char *getTime(const char *s, char *n);

  DIR *dir;
  struct dirent *entry;

  FILE *file;
  char *path = (char *)malloc(sizeof(char));

  sprintf(path, "%s/%s", d.dst, d.op);

  file = fopen(path, "w+");

  if ((dir = opendir(d.src)) == NULL)
    fprintf(stderr, "could't open %s\n", d.src), exit(1);
  else {
    fprintf(file, "NOME,DURAÇÃO\n");
    while ((entry = readdir(dir)) != NULL) {
      if (isAudioFiles(entry->d_name) == true) {
        fprintf(file, "%s,%s", entry->d_name, getTime(d.src, entry->d_name));
      }
    }

    fclose(file);
    closedir(dir);
  }
}

char *getTime(const char *s, char *n) {
  FILE *fp;
  char time[15];
  char *result = (char *) malloc(CHAR_MAX * sizeof(char));

  char cmd[100];
  sprintf(cmd, "soxi -D %s/%s 2>/dev/null", s, n);

  fp = popen(cmd, "r");

  if (fp == NULL)
    fprintf(stderr, "soxi command failed\n");

  if (fgets(time, 15, fp) != NULL)
    result = time;
  else
    fprintf(stderr, "fgets error\n");

  pclose(fp);

  return result;
  free(result);
}

void help() {
  fprintf(stderr, "\nUSAGE: audio_length [OPTIOMS] -n <FILENAME.csv>\n"
                  "Options:\n"
                  "       -s <path for source directory>\n"
                  "       -d <path for destination file>\n\n");
}