GHOST_SystemPathsUnix.cpp

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/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2010 Blender Foundation.
 * All rights reserved.
 */
 
#include <cstdio>
#include <sstream>
 
#include "GHOST_SystemPathsUnix.h"
 
#include "GHOST_Debug.h"
 
// For timing
 
#include <sys/time.h>
#include <unistd.h>
 
#include <cstdlib> /* for exit */
#include <stdio.h> /* for fprintf only */
 
#include <pwd.h> /* for get home without use getenv() */
#include <string>
 
using std::string;
 
#ifdef PREFIX
static const char *static_path = PREFIX "/share";
#else
static const char *static_path = NULL;
#endif
 
GHOST_SystemPathsUnix::GHOST_SystemPathsUnix()
{
}
 
GHOST_SystemPathsUnix::~GHOST_SystemPathsUnix()
{
}
 
const GHOST_TUns8 *GHOST_SystemPathsUnix::getSystemDir(int, const char *versionstr) const
{
  /* XXX On Debian ignore versionstr when building the system path */
  versionstr = "";
 
  /* no prefix assumes a portable build which only uses bundled scripts */
  if (static_path) {
    static string system_path = string(static_path) + "/blender/" + versionstr;
    return (GHOST_TUns8 *)system_path.c_str();
  }
 
  return NULL;
}
 
const GHOST_TUns8 *GHOST_SystemPathsUnix::getUserDir(int version, const char *versionstr) const
{
  static string user_path = "";
  static int last_version = 0;
 
  /* in blender 2.64, we migrate to XDG. to ensure the copy previous settings
   * operator works we give a different path depending on the requested version */
  if (version < 264) {
    if (user_path.empty() || last_version != version) {
      const char *home = getenv("HOME");
 
      last_version = version;
 
      if (home) {
        user_path = string(home) + "/.blender/" + versionstr;
      }
      else {
        return NULL;
      }
    }
    return (GHOST_TUns8 *)user_path.c_str();
  }
  else {
    if (user_path.empty() || last_version != version) {
      const char *home = getenv("XDG_CONFIG_HOME");
 
      last_version = version;
 
      if (home) {
        user_path = string(home) + "/blender/" + versionstr;
      }
      else {
        home = getenv("HOME");
 
        if (home == NULL)
          home = getpwuid(getuid())->pw_dir;
 
        user_path = string(home) + "/.config/blender/" + versionstr;
      }
    }
 
    return (const GHOST_TUns8 *)user_path.c_str();
  }
}
 
const GHOST_TUns8 *GHOST_SystemPathsUnix::getUserSpecialDir(GHOST_TUserSpecialDirTypes type) const
{
  const char *type_str;
 
  switch (type) {
    case GHOST_kUserSpecialDirDesktop:
      type_str = "DESKTOP";
      break;
    case GHOST_kUserSpecialDirDocuments:
      type_str = "DOCUMENTS";
      break;
    case GHOST_kUserSpecialDirDownloads:
      type_str = "DOWNLOAD";
      break;
    case GHOST_kUserSpecialDirMusic:
      type_str = "MUSIC";
      break;
    case GHOST_kUserSpecialDirPictures:
      type_str = "PICTURES";
      break;
    case GHOST_kUserSpecialDirVideos:
      type_str = "VIDEOS";
      break;
    default:
      GHOST_ASSERT(
          false,
          "GHOST_SystemPathsUnix::getUserSpecialDir(): Invalid enum value for type parameter");
      return NULL;
  }
 
  static string path = "";
  /* Pipe stderr to /dev/null to avoid error prints. We will fail gracefully still. */
  string command = string("xdg-user-dir ") + type_str + " 2> /dev/null";
 
  FILE *fstream = popen(command.c_str(), "r");
  if (fstream == NULL) {
    return NULL;
  }
  std::stringstream path_stream;
  while (!feof(fstream)) {
    char c = fgetc(fstream);
    /* xdg-user-dir ends the path with '\n'. */
    if (c == '\n') {
      break;
    }
    path_stream << c;
  }
  if (pclose(fstream) == -1) {
    perror("GHOST_SystemPathsUnix::getUserSpecialDir failed at pclose()");
    return NULL;
  }
 
  path = path_stream.str();
  return path[0] ? (const GHOST_TUns8 *)path.c_str() : NULL;
}
 
const GHOST_TUns8 *GHOST_SystemPathsUnix::getBinaryDir() const
{
  return NULL;
}
 
void GHOST_SystemPathsUnix::addToSystemRecentFiles(const char * /*filename*/) const
{
  /* TODO: implement for X11 */
}