mirror of
https://github.com/ZDoom/raze-gles.git
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427 lines
10 KiB
C++
427 lines
10 KiB
C++
/*
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** findfile.cpp
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** Warpper around the native directory scanning API
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**
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**---------------------------------------------------------------------------
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** Copyright 1998-2016 Randy Heit
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** Copyright 2005-2020 Christoph Oelckers
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions
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** are met:
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**
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** 1. Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** 2. Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in the
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** documentation and/or other materials provided with the distribution.
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** 3. The name of the author may not be used to endorse or promote products
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** derived from this software without specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**---------------------------------------------------------------------------
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**
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*/
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#include "findfile.h"
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#include "zstring.h"
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#include "cmdlib.h"
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#include "printf.h"
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#include "configfile.h"
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#ifndef _WIN32
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#include <unistd.h>
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#include <fnmatch.h>
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static const char *pattern;
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static int matchfile(const struct dirent *ent)
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{
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return fnmatch(pattern, ent->d_name, FNM_NOESCAPE) == 0;
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}
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void *I_FindFirst(const char *const filespec, findstate_t *const fileinfo)
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{
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FString dir;
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const char *const slash = strrchr(filespec, '/');
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if (slash)
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{
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pattern = slash + 1;
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dir = FString(filespec, slash - filespec + 1);
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fileinfo->path = dir;
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}
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else
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{
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pattern = filespec;
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dir = ".";
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}
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fileinfo->current = 0;
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fileinfo->count = scandir(dir.GetChars(), &fileinfo->namelist, matchfile, alphasort);
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if (fileinfo->count > 0)
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{
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return fileinfo;
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}
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return (void *)-1;
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}
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int I_FindNext(void *const handle, findstate_t *const fileinfo)
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{
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findstate_t *const state = static_cast<findstate_t *>(handle);
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if (state->current < fileinfo->count)
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{
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return ++state->current < fileinfo->count ? 0 : -1;
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}
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return -1;
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}
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int I_FindClose(void *const handle)
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{
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findstate_t *const state = static_cast<findstate_t *>(handle);
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if (handle != (void *)-1 && state->count > 0)
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{
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for (int i = 0; i < state->count; ++i)
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{
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free(state->namelist[i]);
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}
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free(state->namelist);
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state->namelist = nullptr;
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state->count = 0;
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}
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return 0;
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}
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int I_FindAttr(findstate_t *const fileinfo)
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{
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dirent *const ent = fileinfo->namelist[fileinfo->current];
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const FString path = fileinfo->path + ent->d_name;
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bool isdir;
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if (DirEntryExists(path, &isdir))
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{
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return isdir ? FA_DIREC : 0;
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}
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return 0;
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}
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#else
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#include <windows.h>
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#include <direct.h>
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//==========================================================================
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//
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// I_FindFirst
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//
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// Start a pattern matching sequence.
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//
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//==========================================================================
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void *I_FindFirst(const char *filespec, findstate_t *fileinfo)
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{
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static_assert(sizeof(WIN32_FIND_DATAW) == sizeof(fileinfo->FindData), "FindData size mismatch");
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auto widespec = WideString(filespec);
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fileinfo->UTF8Name = "";
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return FindFirstFileW(widespec.c_str(), (LPWIN32_FIND_DATAW)&fileinfo->FindData);
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}
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//==========================================================================
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//
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// I_FindNext
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//
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// Return the next file in a pattern matching sequence.
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//
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//==========================================================================
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int I_FindNext(void *handle, findstate_t *fileinfo)
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{
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fileinfo->UTF8Name = "";
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return !FindNextFileW((HANDLE)handle, (LPWIN32_FIND_DATAW)&fileinfo->FindData);
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}
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//==========================================================================
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//
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// I_FindClose
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//
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// Finish a pattern matching sequence.
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//
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//==========================================================================
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int I_FindClose(void *handle)
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{
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return FindClose((HANDLE)handle);
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}
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//==========================================================================
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//
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// I_FindName
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//
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// Returns the name for an entry
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//
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//==========================================================================
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const char *I_FindName(findstate_t *fileinfo)
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{
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if (fileinfo->UTF8Name.IsEmpty()) fileinfo->UTF8Name = fileinfo->FindData.Name;
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return fileinfo->UTF8Name.GetChars();
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}
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#endif
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//==========================================================================
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//
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// D_AddFile
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//
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//==========================================================================
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bool D_AddFile(TArray<FString>& wadfiles, const char* file, bool check, int position, FConfigFile* config)
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{
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if (file == nullptr || *file == '\0')
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{
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return false;
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}
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if (check && !DirEntryExists(file))
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{
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const char* f = BaseFileSearch(file, ".wad", false, config);
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if (f == nullptr)
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{
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Printf("Can't find '%s'\n", file);
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return false;
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}
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file = f;
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}
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FString f = file;
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FixPathSeperator(f);
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if (position == -1) wadfiles.Push(f);
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else wadfiles.Insert(position, f);
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return true;
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}
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//==========================================================================
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//
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// D_AddWildFile
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//
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//==========================================================================
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void D_AddWildFile(TArray<FString>& wadfiles, const char* value, const char *extension, FConfigFile* config)
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{
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if (value == nullptr || *value == '\0')
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{
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return;
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}
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const char* wadfile = BaseFileSearch(value, extension, false, config);
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if (wadfile != nullptr)
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{
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D_AddFile(wadfiles, wadfile, true, -1, config);
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}
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else
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{ // Try pattern matching
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findstate_t findstate;
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char path[ZPATH_MAX];
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char* sep;
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void* handle = I_FindFirst(value, &findstate);
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strcpy(path, value);
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sep = strrchr(path, '/');
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if (sep == nullptr)
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{
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sep = strrchr(path, '\\');
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#ifdef _WIN32
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if (sep == nullptr && path[1] == ':')
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{
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sep = path + 1;
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}
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#endif
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}
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if (handle != ((void*)-1))
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{
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do
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{
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if (!(I_FindAttr(&findstate) & FA_DIREC))
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{
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if (sep == nullptr)
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{
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D_AddFile(wadfiles, I_FindName(&findstate), true, -1, config);
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}
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else
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{
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strcpy(sep + 1, I_FindName(&findstate));
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D_AddFile(wadfiles, path, true, -1, config);
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}
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}
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} while (I_FindNext(handle, &findstate) == 0);
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}
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I_FindClose(handle);
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}
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}
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//==========================================================================
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//
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// D_AddConfigWads
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//
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// Adds all files in the specified config file section.
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//
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//==========================================================================
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void D_AddConfigFiles(TArray<FString>& wadfiles, const char* section, const char* extension, FConfigFile *config)
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{
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if (config && config->SetSection(section))
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{
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const char* key;
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const char* value;
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FConfigFile::Position pos;
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while (config->NextInSection(key, value))
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{
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if (stricmp(key, "Path") == 0)
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{
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// D_AddWildFile resets config's position, so remember it
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config->GetPosition(pos);
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D_AddWildFile(wadfiles, ExpandEnvVars(value), extension, config);
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// Reset config's position to get next wad
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config->SetPosition(pos);
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}
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}
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}
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}
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//==========================================================================
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//
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// D_AddDirectory
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//
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// Add all .wad files in a directory. Does not descend into subdirectories.
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//
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//==========================================================================
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void D_AddDirectory(TArray<FString>& wadfiles, const char* dir, const char *filespec, FConfigFile* config)
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{
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char curdir[ZPATH_MAX];
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if (getcwd(curdir, ZPATH_MAX))
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{
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char skindir[ZPATH_MAX];
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findstate_t findstate;
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void* handle;
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size_t stuffstart;
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stuffstart = strlen(dir);
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memcpy(skindir, dir, stuffstart * sizeof(*dir));
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skindir[stuffstart] = 0;
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if (skindir[stuffstart - 1] == '/')
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{
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skindir[--stuffstart] = 0;
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}
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if (!chdir(skindir))
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{
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skindir[stuffstart++] = '/';
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if ((handle = I_FindFirst(filespec, &findstate)) != (void*)-1)
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{
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do
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{
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if (!(I_FindAttr(&findstate) & FA_DIREC))
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{
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strcpy(skindir + stuffstart, I_FindName(&findstate));
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D_AddFile(wadfiles, skindir, true, -1, config);
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}
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} while (I_FindNext(handle, &findstate) == 0);
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I_FindClose(handle);
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}
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}
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chdir(curdir);
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}
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}
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//==========================================================================
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//
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// BaseFileSearch
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//
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// If a file does not exist at <file>, looks for it in the directories
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// specified in the config file. Returns the path to the file, if found,
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// or nullptr if it could not be found.
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//
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//==========================================================================
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const char* BaseFileSearch(const char* file, const char* ext, bool lookfirstinprogdir, FConfigFile* config)
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{
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static char wad[ZPATH_MAX];
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if (file == nullptr || *file == '\0')
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{
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return nullptr;
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}
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if (lookfirstinprogdir)
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{
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mysnprintf(wad, countof(wad), "%s%s%s", progdir.GetChars(), progdir.Back() == '/' ? "" : "/", file);
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if (DirEntryExists(wad))
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{
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return wad;
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}
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}
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if (DirEntryExists(file))
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{
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mysnprintf(wad, countof(wad), "%s", file);
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return wad;
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}
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if (config != nullptr && config->SetSection("FileSearch.Directories"))
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{
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const char* key;
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const char* value;
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while (config->NextInSection(key, value))
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{
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if (stricmp(key, "Path") == 0)
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{
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FString dir;
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dir = NicePath(value);
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if (dir.IsNotEmpty())
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{
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mysnprintf(wad, countof(wad), "%s%s%s", dir.GetChars(), dir.Back() == '/' ? "" : "/", file);
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if (DirEntryExists(wad))
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{
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return wad;
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}
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}
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}
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}
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}
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// Retry, this time with a default extension
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if (ext != nullptr)
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{
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FString tmp = file;
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DefaultExtension(tmp, ext);
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return BaseFileSearch(tmp, nullptr, lookfirstinprogdir, config);
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}
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return nullptr;
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}
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