wow. that was easy: git mv core nucleus
[feisty_meow.git] / nucleus / library / filesystem / directory.cpp
diff --git a/nucleus/library/filesystem/directory.cpp b/nucleus/library/filesystem/directory.cpp
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+/*****************************************************************************\
+*                                                                             *
+*  Name   : directory                                                         *
+*  Author : Chris Koeritz                                                     *
+*                                                                             *
+*******************************************************************************
+* Copyright (c) 2001-$now By Author.  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 is online at:      *
+*     http://www.fsf.org/copyleft/gpl.html                                    *
+* Please send any updates to: fred@gruntose.com                               *
+\*****************************************************************************/
+
+#include "directory.h"
+#include "filename.h"
+
+#include <algorithms/shell_sort.h>
+#include <application/windoze_helper.h>
+#include <basis/astring.h>
+#include <basis/contracts.h>
+#include <basis/functions.h>
+#include <basis/utf_conversion.h>
+#include <loggers/program_wide_logger.h>
+#include <structures/string_array.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#ifdef __UNIX__
+  #include <dirent.h>
+  #include <fnmatch.h>
+  #include <string.h>
+  #include <unistd.h>
+#endif
+#ifdef __WIN32__
+  #include <direct.h>
+#endif
+
+/*
+#ifdef __WIN32__
+  const int MAX_ABS_PATH = 2048;
+#elif defined(__APPLE__)
+  const int MAX_ABS_PATH = 2048;
+#else
+  const int MAX_ABS_PATH = MAX_ABS_PATH;
+#endif
+*/
+
+#undef LOG
+#define LOG(s) CLASS_EMERGENCY_LOG(program_wide_logger::get(), s)
+
+using namespace algorithms;
+using namespace basis;
+using namespace loggers;
+using namespace structures;
+
+namespace filesystem {
+
+directory::directory(const astring &path, const char *pattern)
+: _scanned_okay(false),
+  _path(new astring),
+  _files(new string_array),
+  _folders(new string_array),
+  _pattern(new astring(pattern))
+{ reset(path, pattern); }
+
+directory::directory(const directory &to_copy)
+: _scanned_okay(false),
+  _path(new astring),
+  _files(new string_array),
+  _folders(new string_array),
+  _pattern(new astring)
+{ reset(*to_copy._path, to_copy._pattern->observe()); }
+
+directory::~directory()
+{
+  _scanned_okay = false;
+  WHACK(_path);
+  WHACK(_files);
+  WHACK(_folders);
+  WHACK(_pattern);
+}
+
+const astring &directory::path() const { return *_path; }
+
+const astring &directory::pattern() const { return *_pattern; }
+
+directory &directory::operator =(const directory &to_copy)
+{
+  if (this == &to_copy) return *this;  // oops.
+  _scanned_okay = false;
+  reset(*to_copy._path, to_copy._pattern->observe());
+  return *this;
+}
+
+astring directory::absolute_path(const astring &rel_path)
+{
+  char abs_path[MAX_ABS_PATH + 1];
+  abs_path[0] = '\0';
+#ifdef __WIN32__
+  if (!_fullpath(abs_path, rel_path.s(), MAX_ABS_PATH)) return "";
+  return abs_path;
+#else
+  if (!realpath(rel_path.s(), abs_path)) return "";
+  return abs_path;
+#endif
+}
+
+astring directory::current()
+{
+  astring to_return(".");  // failure result.
+#ifdef __WIN32__
+  flexichar buffer[MAX_ABS_PATH + 1] = { '\0' };
+  GetCurrentDirectory(MAX_ABS_PATH, buffer);
+  to_return = from_unicode_temp(buffer);
+#else
+  char buffer[MAX_ABS_PATH + 1] = { '\0' };
+  if (realpath(".", buffer)) to_return = buffer;
+#endif
+  return to_return;
+}
+
+bool directory::reset(const astring &path, const char *pattern)
+{ *_path = path; *_pattern = pattern; return rescan(); }
+
+bool directory::move_up(const char *pattern)
+{
+  astring currdir = current();
+  return reset(currdir + "/..", pattern);
+}
+
+bool directory::move_down(const astring &subdir, const char *pattern)
+{
+  astring currdir = current();
+  return reset(currdir + "/" + subdir, pattern);
+}
+
+const string_array &directory::files() const { return *_files; }
+
+const string_array &directory::directories() const { return *_folders; }
+
+bool directory::rescan()
+{
+  FUNCDEF("rescan");
+  _scanned_okay = false;
+  _files->reset();
+  _folders->reset();
+  astring cur_dir = ".";
+  astring par_dir = "..";
+#ifdef __WIN32__
+  // start reading the directory.
+  WIN32_FIND_DATA wfd;
+  astring real_path_spec = *_path + "/" + *_pattern;
+  HANDLE search_handle = FindFirstFile(to_unicode_temp(real_path_spec), &wfd);
+  if (search_handle == INVALID_HANDLE_VALUE) return false;  // bad path.
+  do {
+    // ignore the two standard directory entries.
+    astring filename_transcoded(from_unicode_temp(wfd.cFileName));
+    if (!strcmp(filename_transcoded.s(), cur_dir.s())) continue;
+    if (!strcmp(filename_transcoded.s(), par_dir.s())) continue;
+
+#ifdef UNICODE
+//temp
+    to_unicode_persist(fudgemart, filename_transcoded);
+    if (memcmp((wchar_t*)fudgemart, wfd.cFileName, wcslen(wfd.cFileName)*2))
+      printf("failed to compare the string before and after transcoding\n");
+#endif
+
+//wprintf(to_unicode_temp("file is %ls\n"), (wchar_t*)to_unicode_temp(filename_transcoded));
+    
+    filename temp_name(*_path, filename_transcoded.s());
+
+    // add this to the appropriate list.
+    if (temp_name.is_directory()) {
+      _folders->concatenate(filename_transcoded);
+    } else {
+      _files->concatenate(filename_transcoded);
+
+#ifdef UNICODE
+      to_unicode_persist(fudgemart2, temp_name.raw());
+      FILE *fpjunk = _wfopen(fudgemart2, to_unicode_temp("rb"));
+      if (!fpjunk)
+        LOG(astring("failed to open the file for testing: ") + temp_name.raw() + "\n");
+      if (fpjunk) fclose(fpjunk);
+#endif
+
+       }
+  } while (FindNextFile(search_handle, &wfd));
+  FindClose(search_handle);
+#endif
+#ifdef __UNIX__
+  DIR *dir = opendir(_path->s());
+//hmmm: could check errno to determine what caused the problem.
+  if (!dir) return false;
+  dirent *entry = readdir(dir);
+  while (entry) {
+    char *file = entry->d_name;
+    bool add_it = true;
+    if (!strcmp(file, cur_dir.s())) add_it = false;
+    if (!strcmp(file, par_dir.s())) add_it = false;
+    // make sure that the filename matches the pattern also.
+    if (add_it && !fnmatch(_pattern->s(), file, 0)) {
+      filename temp_name(*_path, file);
+      // add this to the appropriate list.
+      if (temp_name.is_directory())
+        _folders->concatenate(file);
+      else 
+        _files->concatenate(file);
+    }
+    entry = readdir(dir);
+  }
+  closedir(dir);
+#endif
+  shell_sort(_files->access(), _files->length());
+  shell_sort(_folders->access(), _folders->length());
+
+  _scanned_okay = true;
+  return true;
+}
+
+bool directory::make_directory(const astring &path)
+{
+#ifdef __UNIX__
+  int mk_ret = mkdir(path.s(), 0777);
+#endif
+#ifdef __WIN32__
+  int mk_ret = mkdir(path.s());
+#endif
+  return !mk_ret;
+}
+
+bool directory::remove_directory(const astring &path)
+{
+#ifdef __UNIX__
+  int rm_ret = rmdir(path.s());
+#endif
+#ifdef __WIN32__
+  int rm_ret = rmdir(path.s());
+#endif
+  return !rm_ret;
+}
+
+bool directory::recursive_create(const astring &directory_name)
+{
+//  FUNCDEF("recursive_create");
+  filename dir(directory_name);
+  string_array pieces;
+  dir.separate(pieces);
+  for (int i = 0; i < pieces.length(); i++) {
+    // check each location along the way.
+    string_array partial = pieces.subarray(0, i);
+    filename curr;
+    curr.join(partial);  // this is our current location.
+    // make sure, if we see a drive letter component, that we call it
+    // a proper directory name.
+    if (curr.raw()[curr.raw().end()] == ':')
+      curr = curr.raw() + "/";
+    if (curr.exists()) {
+      if (curr.is_directory()) {
+        continue;  // that's good.
+      }
+      return false;  // if it's an existing file, we're hosed.
+    }
+    // the directory at this place doesn't exist yet.  let's create it.
+    if (!directory::make_directory(curr.raw())) return false;
+  }
+  return true;
+}
+
+} // namespace.