l_qfiles.c

quakeIII源码这个不用我多说吧

/*
===========================================================================
Copyright (C) 1999-2005 Id Software, Inc.

This file is part of Quake III Arena source code.

Quake III Arena source code 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.

Quake III Arena source code 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 Foobar; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
===========================================================================
*/

#if defined(WIN32)|defined(_WIN32)
#include <windows.h>
#include <sys/types.h>
#include <sys/stat.h>
#else
#include <glob.h>
#include <sys/stat.h>
#include <unistd.h>
#endif

#include "qbsp.h"

//file extensions with their type
typedef struct qfile_exttype_s
{
	char *extension;
	int type;
} qfile_exttyp_t;

qfile_exttyp_t quakefiletypes[] =
{
	{QFILEEXT_UNKNOWN, QFILETYPE_UNKNOWN},
	{QFILEEXT_PAK, QFILETYPE_PAK},
	{QFILEEXT_PK3, QFILETYPE_PK3},
	{QFILEEXT_SIN, QFILETYPE_PAK},
	{QFILEEXT_BSP, QFILETYPE_BSP},
	{QFILEEXT_MAP, QFILETYPE_MAP},
	{QFILEEXT_MDL, QFILETYPE_MDL},
	{QFILEEXT_MD2, QFILETYPE_MD2},
	{QFILEEXT_MD3, QFILETYPE_MD3},
	{QFILEEXT_WAL, QFILETYPE_WAL},
	{QFILEEXT_WAV, QFILETYPE_WAV},
	{QFILEEXT_AAS, QFILETYPE_AAS},
	{NULL, 0}
};

//===========================================================================
//
// Parameter:			-
// Returns:				-
// Changes Globals:		-
//===========================================================================
int QuakeFileExtensionType(char *extension)
{
	int i;

	for (i = 0; quakefiletypes[i].extension; i++)
	{
		if (!stricmp(extension, quakefiletypes[i].extension))
		{
			return quakefiletypes[i].type;
		} //end if
	} //end for
	return QFILETYPE_UNKNOWN;
} //end of the function QuakeFileExtensionType
//===========================================================================
//
// Parameter:			-
// Returns:				-
// Changes Globals:		-
//===========================================================================
char *QuakeFileTypeExtension(int type)
{
	int i;

	for (i = 0; quakefiletypes[i].extension; i++)
	{
		if (quakefiletypes[i].type == type)
		{
			return quakefiletypes[i].extension;
		} //end if
	} //end for
	return QFILEEXT_UNKNOWN;
} //end of the function QuakeFileExtension
//===========================================================================
//
// Parameter:			-
// Returns:				-
// Changes Globals:		-
//===========================================================================
int QuakeFileType(char *filename)
{
	char ext[_MAX_PATH] = ".";

	ExtractFileExtension(filename, ext+1);
	return QuakeFileExtensionType(ext);
} //end of the function QuakeFileTypeFromFileName
//===========================================================================
//
// Parameter:				-
// Returns:					-
// Changes Globals:		-
//===========================================================================
char *StringContains(char *str1, char *str2, int casesensitive)
{
	int len, i, j;

	len = strlen(str1) - strlen(str2);
	for (i = 0; i <= len; i++, str1++)
	{
		for (j = 0; str2[j]; j++)
		{
			if (casesensitive)
			{
				if (str1[j] != str2[j]) break;
			} //end if
			else
			{
				if (toupper(str1[j]) != toupper(str2[j])) break;
			} //end else
		} //end for
		if (!str2[j]) return str1;
	} //end for
	return NULL;
} //end of the function StringContains
//===========================================================================
//
// Parameter:			-
// Returns:				-
// Changes Globals:		-
//===========================================================================
int FileFilter(char *filter, char *filename, int casesensitive)
{
	char buf[1024];
	char *ptr;
	int i, found;

	while(*filter)
	{
		if (*filter == '*')
		{
			filter++;
			for (i = 0; *filter; i++)
			{
				if (*filter == '*' || *filter == '?') break;
				buf[i] = *filter;
				filter++;
			} //end for
			buf[i] = '\0';
			if (strlen(buf))
			{
				ptr = StringContains(filename, buf, casesensitive);
				if (!ptr) return false;
				filename = ptr + strlen(buf);
			} //end if
		} //end if
		else if (*filter == '?')
		{
			filter++;
			filename++;
		} //end else if
		else if (*filter == '[' && *(filter+1) == '[')
		{
			filter++;
		} //end if
		else if (*filter == '[')
		{
			filter++;
			found = false;
			while(*filter && !found)
			{
				if (*filter == ']' && *(filter+1) != ']') break;
				if (*(filter+1) == '-' && *(filter+2) && (*(filter+2) != ']' || *(filter+3) == ']'))
				{
					if (casesensitive)
					{
						if (*filename >= *filter && *filename <= *(filter+2)) found = true;
					} //end if
					else
					{
						if (toupper(*filename) >= toupper(*filter) &&
							toupper(*filename) <= toupper(*(filter+2))) found = true;
					} //end else
					filter += 3;
				} //end if
				else
				{
					if (casesensitive)
					{
						if (*filter == *filename) found = true;
					} //end if
					else
					{
						if (toupper(*filter) == toupper(*filename)) found = true;
					} //end else
					filter++;
				} //end else
			} //end while
			if (!found) return false;
			while(*filter)
			{
				if (*filter == ']' && *(filter+1) != ']') break;
				filter++;
			} //end while
			filter++;
			filename++;
		} //end else if
		else
		{
			if (casesensitive)
			{
				if (*filter != *filename) return false;
			} //end if
			else
			{
				if (toupper(*filter) != toupper(*filename)) return false;
			} //end else
			filter++;
			filename++;
		} //end else
	} //end while
	return true;
} //end of the function FileFilter
//===========================================================================
//
// Parameter:			-
// Returns:				-
// Changes Globals:		-
//===========================================================================
quakefile_t *FindQuakeFilesInZip(char *zipfile, char *filter)
{
	unzFile			uf;
	int				err;
	unz_global_info gi;
	char			filename_inzip[MAX_PATH];
	unz_file_info	file_info;
	int				i;
	quakefile_t		*qfiles, *lastqf, *qf;

	uf = unzOpen(zipfile);
	err = unzGetGlobalInfo(uf, &gi);

	if (err != UNZ_OK) return NULL;

	unzGoToFirstFile(uf);

	qfiles = NULL;
	lastqf = NULL;
	for (i = 0; i < gi.number_entry; i++)
	{
		err = unzGetCurrentFileInfo(uf, &file_info, filename_inzip, sizeof(filename_inzip), NULL,0,NULL,0);
		if (err != UNZ_OK) break;

		ConvertPath(filename_inzip);
		if (FileFilter(filter, filename_inzip, false))
		{
			qf = malloc(sizeof(quakefile_t));
			if (!qf) Error("out of memory");
			memset(qf, 0, sizeof(quakefile_t));
			strcpy(qf->pakfile, zipfile);
			strcpy(qf->filename, zipfile);
			strcpy(qf->origname, filename_inzip);
			qf->zipfile = true;
			//memcpy( &buildBuffer[i].zipfileinfo, (unz_s*)uf, sizeof(unz_s));
			memcpy(&qf->zipinfo, (unz_s*)uf, sizeof(unz_s));
			qf->offset = 0;
			qf->length = file_info.uncompressed_size;
			qf->type = QuakeFileType(filename_inzip);
			//add the file ot the list
			qf->next = NULL;
			if (lastqf) lastqf->next = qf;
			else qfiles = qf;
			lastqf = qf;
		} //end if
		unzGoToNextFile(uf);
	} //end for

	unzClose(uf);

	return qfiles;
} //end of the function FindQuakeFilesInZip
//===========================================================================
//
// Parameter:			-
// Returns:				-
// Changes Globals:		-
//===========================================================================
quakefile_t *FindQuakeFilesInPak(char *pakfile, char *filter)
{
	FILE *fp;
	dpackheader_t packheader;
	dsinpackfile_t *packfiles;
	dpackfile_t *idpackfiles;
	quakefile_t *qfiles, *lastqf, *qf;
	int numpackdirs, i;

	qfiles = NULL;
	lastqf = NULL;
	//open the pak file
	fp = fopen(pakfile, "rb");
	if (!fp)
	{
		Warning("can't open pak file %s", pakfile);
		return NULL;
	} //end if
	//read pak header, check for valid pak id and seek to the dir entries
	if ((fread(&packheader, 1, sizeof(dpackheader_t), fp) != sizeof(dpackheader_t))
		|| (packheader.ident != IDPAKHEADER && packheader.ident != SINPAKHEADER)
		||	(fseek(fp, LittleLong(packheader.dirofs), SEEK_SET))
		)
	{
		fclose(fp);
		Warning("invalid pak file %s", pakfile);
		return NULL;
	} //end if
	//if it is a pak file from id software
	if (packheader.ident == IDPAKHEADER)
	{
		//number of dir entries in the pak file
		numpackdirs = LittleLong(packheader.dirlen) / sizeof(dpackfile_t);