mtxlaunch.cpp

/**
 * This is free and unencumbered software released into the public domain.
 *
 * Anyone is free to copy, modify, publish, use, compile, sell, or
 * distribute this software, either in source code form or as a compiled
 * binary, for any purpose, commercial or non-commercial, and by any
 * means.
 *
 * In jurisdictions that recognize copyright laws, the author or authors
 * of this software dedicate any and all copyright interest in the
 * software to the public domain. We make this dedication for the benefit
 * of the public at large and to the detriment of our heirs and
 * successors. We intend this dedication to be an overt act of
 * relinquishment in perpetuity of all present and future rights to this
 * software under copyright law.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * For more information, please refer to <http://unlicense.org/>
 */
#include <iostream>
#include <errno.h>
#include <libgen.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>

int main(int argc, char **argv)
{
  std::string cmd, arg, fullcmd;
  char *pfx;
  char *argv_child[argc + 1] = {0};
  int i, j = 1, errsv, rv = 0;

  cmd = "mkvtoolnix-gui";

  if (argc > 1 && strncmp(argv[1], "mkv", 3) == 0) {
    arg = std::string(argv[1]);
    if (arg == "mkvinfo-gui") {
      cmd = "mkvinfo";
      argv_child[1] = (char *)"-g";
      j = 2;
    } else if (arg == "mkvinfo" || arg == "mkvinfo-text")
      cmd = "mkvinfo";
    else if (arg == "mkvextract")
      cmd = "mkvextract";
    else if (arg == "mkvmerge")
      cmd = "mkvmerge";
    else if (arg == "mkvpropedit")
      cmd = "mkvpropedit";
  }

  if (!(pfx = realpath("/proc/self/exe", NULL))) {
    std::cerr << "error: could not resolve /proc/self/exe" << std::endl;
    return 1;
  } else {
    fullcmd = std::string(dirname(pfx)) + "/" + cmd;
    free(pfx);
  }
  argv_child[0] = (char *)fullcmd.c_str();

  if (argc > 1) {
    for (i = 2; i < argc; i++, j++) {
      argv_child[j] = argv[i];
    }
  }

  rv = execvp(fullcmd.c_str(), argv_child);
  errsv = errno;

  if (rv == -1) {
    std::cerr << "execvp() failed to run `" << fullcmd << "': " << strerror(errsv) << std::endl;
    return errsv;
  }
  return 0;
}