gui_common.c

   1 /*
   2  * Copyright (C) 2006-2008 Andre Noll <maan@systemlinux.org>
   3  *
   4  * Licensed under the GPL v2. For licencing details see COPYING.
   5  */
   6
   7 /** \file gui_common.c Functions used by the guis of paraslash. */
   8
   9
  10 #include <sys/types.h>
  11 #include <dirent.h>
  12
  13 #include "para.h"
  14 #include "string.h"
  15 #include "fd.h"
  16
  17 int para_open_audiod_pipe(char *cmd)
  18 {
  19         int fds[3] = {0, 1, 0};
  20         pid_t pid;
  21         int ret = para_exec_cmdline_pid(&pid, cmd, fds);
  22         if (ret < 0)
  23                 return ret;
  24         ret = mark_fd_nonblocking(fds[1]);
  25         if (ret > 0)
  26                 return fds[1];
  27         close(fds[1]);
  28         return ret;
  29 }
  30
  31 int read_audiod_pipe(int fd, line_handler_t *line_handler)
  32 {
  33         static char buf[4096];
  34         const ssize_t bufsize = sizeof(buf) - 1;
  35         static ssize_t loaded;
  36         ssize_t ret;
  37
  38         if (loaded >= bufsize)
  39                 loaded = 0;
  40         ret = read(fd, buf + loaded, bufsize - loaded);
  41         if (ret > 0) {
  42                 loaded += ret;
  43                 buf[loaded] = '\0';
  44                 loaded = for_each_line(buf, loaded, line_handler, NULL);
  45         }
  46         return ret;
  47 }