gui_common.c

   1 /*
   2  * Copyright (C) 2006-2007 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 extern const char *status_item_list[NUM_STAT_ITEMS];
  18
  19 int para_open_audiod_pipe(char *cmd)
  20 {
  21         int fds[3] = {0, 1, 0};
  22         pid_t pid;
  23         int ret = para_exec_cmdline_pid(&pid, cmd, fds);
  24         if (ret < 0)
  25                 return ret;
  26         ret = mark_fd_nonblock(fds[1]);
  27         if (ret > 0)
  28                 return fds[1];
  29         close(fds[1]);
  30         return ret;
  31 }
  32
  33 int read_audiod_pipe(int fd, line_handler_t *line_handler)
  34 {
  35         static char buf[4096];
  36         const ssize_t bufsize = sizeof(buf) - 1;
  37         static ssize_t loaded;
  38         ssize_t ret;
  39
  40         if (loaded >= bufsize)
  41                 loaded = 0;
  42         ret = read(fd, buf + loaded, bufsize - loaded);
  43         if (ret > 0) {
  44                 loaded += ret;
  45                 buf[loaded] = '\0';
  46                 loaded = for_each_line(buf, loaded, line_handler, NULL);
  47         }
  48         return ret;
  49 }