Partially deobfuscated the grfio module
git-svn-id: https://svn.code.sf.net/p/rathena/svn/trunk@10271 54d463be-8e91-2dee-dedb-b68131a5f0ec
This commit is contained in:
ultramage
parent
2216188890
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a5407d3948
@ -4,6 +4,7 @@ AS OF SVN REV. 5091, WE ARE NOW USING TRUNK. ALL UNTESTED BUGFIXES/FEATURES GO
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IF YOU HAVE A WORKING AND TESTED BUGFIX PUT IT INTO STABLE AS WELL AS TRUNK.
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2007/04/17
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* Partially deobfuscated the grfio module
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* Finally fixed mingw problems, managed to build both TXT and SQL
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* Fixed the uint32 platform problem (Microsoft failed so I removed it :)
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* Removed the cbasetypes.h dependency from the mapcache generator
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279
src/tool/grfio.c
279
src/tool/grfio.c
@ -1,28 +1,6 @@
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// Copyright (c) Athena Dev Teams - Licensed under GNU GPL
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// For more information, see LICENCE in the main folder
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/*********************************************************************
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*
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* Ragnarok Online Emulator : grfio.c -- grf file I/O Module
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*--------------------------------------------------------------------
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* special need library : zlib
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*********************************************************************
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* $Id: grfio.c,v 1.2 2004/09/29 17:31:49 kalaspuff Exp $
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*
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* 2002/12/18... the original edition
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* 2003/01/23 ... Code correction
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* 2003/02/01 ... An addition and decryption processing are improved for LocalFile and two or more GRF(s) check processing.
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* 2003/02/02 ... Even if there is no grf it does not stop -- as -- correction
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* 2003/02/02... grf reading specification can be added later -- as -- correction (grfio_add function addition)
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* 2003/02 / 03... at the time of grfio_resourcecheck processing the entry addition processing method -- correction
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* 2003/02/05... change of the processing in grfio_init
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* 2003/02/23... a local file check -- GRFIO_LOCAL -- switch (Defoe -- Function Off)
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* 2003/10/21 ... The data of alpha client was read.
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* 2003/11/10 ... Ready new grf format.
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* 2003/11/11 ... version check fix & bug fix
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* 2006/04/16 ... fixed crash grfio_find_file when file is not found.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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@ -37,9 +15,7 @@
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#include "../zlib/zlib.h"
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#include "../zlib/iowin32.h"
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#else
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#ifndef __FREEBSD__
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#include <zlib.h>
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#endif
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#include <zlib.h>
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#define strcmpi strcasecmp
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#endif
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@ -53,33 +29,34 @@ static char data_dir[1024] = ""; // "../";
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// file entry table struct
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//----------------------------
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typedef struct _FILELIST {
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int srclen; // compressed size
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int srclen_aligned; //
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int srclen; // compressed size
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int srclen_aligned;
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int declen; // original size
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int srcpos;
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int next;
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int srcpos; // position of entry in grf
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int next; // index of next filelist entry with same hash (-1: end of entry chain)
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int cycle;
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char type;
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char fn[128-4*5]; // file name
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char *fnd;
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signed char gentry; // read grf file select
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char* fnd; // if the file was cloned, contains name of original file
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char gentry; // read grf file select
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} FILELIST;
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//gentry ... 0 : It acquires from a local file.
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// It acquires from the resource file of 1>=:gentry_table[gentry-1].
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// 1<=: Check a local file.
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// If it is, after re-setting to 0, it acquires from a local file.
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// If there is nothing, mark reversal will be carried out, and it will re-set, and will acquire from a resource file as well as 1>=.
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//Since char defines *FILELIST.gentry, the maximum which can be added by grfio_add becomes by 127 pieces.
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//gentry ... > 0 : data read from a grf file (gentry_table[gentry-1])
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//gentry ... 0 : data read from a local file (data directory)
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//gentry ... < 0 : entry "-(gentry)" is marked for a local file check
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// - if local file exists, gentry will be set to 0 (thus using the local file)
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// - if local file doesn't exist, sign is inverted (thus using the original file inside a grf)
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// (NOTE: this case is only used once (during startup) and only if GRFIO_LOCAL is enabled)
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// (NOTE: probably meant to be used to override grf contents by files in the data directory)
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//#define GRFIO_LOCAL
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#define GENTRY_LIMIT 512
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#define FILELIST_LIMIT 1048576 // temporary maximum, and a theory top maximum are 2G.
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static FILELIST *filelist = NULL;
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// stores info about every loaded file
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static FILELIST* filelist = NULL;
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static int filelist_entrys = 0;
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static int filelist_maxentry = 0;
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static char **gentry_table = NULL;
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// stores grf file names
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static char** gentry_table = NULL;
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static int gentry_entrys = 0;
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static int gentry_maxentry = 0;
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@ -138,7 +115,7 @@ static unsigned char NibbleData[4][64]={
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/*-----------------
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* long data get
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*/
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static unsigned int getlong(unsigned char *p)
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static unsigned int getlong(unsigned char* p)
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{
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return p[0]
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| p[1] << 0x08
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@ -148,16 +125,15 @@ static unsigned int getlong(unsigned char *p)
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/*==========================================
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* Grf data decode : Subs
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*------------------------------------------
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*/
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static void NibbleSwap(BYTE *Src, int len)
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*------------------------------------------*/
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static void NibbleSwap(BYTE* Src, int len)
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{
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for(;0<len;len--,Src++) {
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*Src = (*Src>>4) | (*Src<<4);
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}
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}
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static void BitConvert(BYTE *Src,char *BitSwapTable)
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static void BitConvert(BYTE* Src, char* BitSwapTable)
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{
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int lop,prm;
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BYTE tmp[8];
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@ -171,7 +147,7 @@ static void BitConvert(BYTE *Src,char *BitSwapTable)
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memcpy(Src,tmp,8);
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}
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static void BitConvert4(BYTE *Src)
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static void BitConvert4(BYTE* Src)
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{
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int lop,prm;
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BYTE tmp[8];
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@ -202,7 +178,7 @@ static void BitConvert4(BYTE *Src)
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Src[3] ^= tmp[7];
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}
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static void decode_des_etc(BYTE *buf,int len,int type,int cycle)
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static void decode_des_etc(BYTE* buf, int len, int type, int cycle)
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{
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int lop,cnt=0;
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if(cycle<3) cycle=3;
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@ -252,9 +228,8 @@ static void decode_des_etc(BYTE *buf,int len,int type,int cycle)
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}
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/*==========================================
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* Grf data decode sub : zip
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*------------------------------------------
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*/
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int decode_zip(unsigned char *dest, unsigned long* destLen, const unsigned char* source, unsigned long sourceLen)
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*------------------------------------------*/
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int decode_zip(unsigned char* dest, unsigned long* destLen, const unsigned char* source, unsigned long sourceLen)
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{
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z_stream stream;
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int err;
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@ -285,7 +260,8 @@ int decode_zip(unsigned char *dest, unsigned long* destLen, const unsigned char*
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return err;
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}
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int encode_zip(unsigned char *dest, unsigned long* destLen, const unsigned char* source, unsigned long sourceLen) {
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int encode_zip(unsigned char* dest, unsigned long* destLen, const unsigned char* source, unsigned long sourceLen)
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{
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z_stream stream;
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int err;
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memset(&stream, 0, sizeof(stream));
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@ -320,9 +296,8 @@ int encode_zip(unsigned char *dest, unsigned long* destLen, const unsigned char*
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* Adapted from miniunz.c [Celest]
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* Version 1.01b, May 30th, 2004
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* Copyright (C) 1998-2004 Gilles Vollant
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* -------------------------------------
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*/
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int deflate_file (const char *source, const char *filename)
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* -------------------------------------*/
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int deflate_file (const char* source, const char* filename)
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{
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#ifdef _WIN32
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zlib_filefunc_def ffunc;
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@ -378,7 +353,7 @@ int deflate_file (const char *source, const char *filename)
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return 0;
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}
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unsigned long grfio_crc32 (const unsigned char *buf, unsigned int len)
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unsigned long grfio_crc32 (const unsigned char* buf, unsigned int len)
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{
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return crc32(crc32(0L, Z_NULL, 0), buf, len);
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}
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@ -389,13 +364,12 @@ unsigned long grfio_crc32 (const unsigned char *buf, unsigned int len)
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/*==========================================
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* File List : Hash make
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*------------------------------------------
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*/
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static int filehash(unsigned char *fname)
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*------------------------------------------*/
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static int filehash(char* fname)
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{
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unsigned int hash=0;
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unsigned int hash = 0;
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while(*fname) {
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hash = ((hash<<1)+(hash>>7)*9+tolower(*fname));
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hash = ((hash<<1) + (hash>>7)*9 + (unsigned int)tolower((unsigned char)(*fname)));
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fname++;
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}
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return hash & 255;
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@ -403,55 +377,51 @@ static int filehash(unsigned char *fname)
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/*==========================================
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* File List : Hash initalize
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*------------------------------------------
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*/
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*------------------------------------------*/
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static void hashinit(void)
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{
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int lop;
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for (lop = 0; lop < 256; lop++)
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filelist_hash[lop] = -1;
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int i;
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for (i = 0; i < 256; i++)
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filelist_hash[i] = -1;
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}
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/*==========================================
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* File List : File find
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*------------------------------------------
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*/
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static FILELIST *filelist_find(char *fname)
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*------------------------------------------*/
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static FILELIST* filelist_find(char* fname)
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{
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int hash;
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int hash, index;
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if (!filelist)
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return NULL;
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for (hash = filelist_hash[filehash((unsigned char *) fname)]; hash >= 0; hash = filelist[hash].next) {
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if(strcmpi(filelist[hash].fn, fname) == 0)
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hash = filelist_hash[filehash(fname)];
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for (index = hash; index != -1; index = filelist[index].next)
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if(!strcmpi(filelist[index].fn, fname))
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break;
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}
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return (hash >= 0) ? &filelist[hash] : NULL;
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return (index >= 0) ? &filelist[index] : NULL;
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}
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char *grfio_find_file(char *fname){
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// returns the original file name
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/*
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char* grfio_find_file(char* fname)
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{
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FILELIST *filelist = filelist_find(fname);
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if (!filelist) return NULL;
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return (!filelist->fnd?filelist->fn:filelist->fnd);
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return (!filelist->fnd ? filelist->fn : filelist->fnd);
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}
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*/
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/*==========================================
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* File List : Filelist add
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*------------------------------------------
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*/
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*------------------------------------------*/
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#define FILELIST_ADDS 1024 // number increment of file lists `
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static FILELIST* filelist_add(FILELIST *entry)
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static FILELIST* filelist_add(FILELIST* entry)
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{
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int hash;
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if (filelist_entrys >= FILELIST_LIMIT) {
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printf("GRF filelist limit reached!\n");
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exit(1);
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}
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if (filelist_entrys >= filelist_maxentry) {
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filelist = (FILELIST *)realloc(filelist, (filelist_maxentry + FILELIST_ADDS) * sizeof(FILELIST));
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memset(filelist + filelist_maxentry, '\0', FILELIST_ADDS * sizeof(FILELIST));
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@ -460,7 +430,7 @@ static FILELIST* filelist_add(FILELIST *entry)
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memcpy (&filelist[filelist_entrys], entry, sizeof(FILELIST));
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hash = filehash((unsigned char *) entry->fn);
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hash = filehash(entry->fn);
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filelist[filelist_entrys].next = filelist_hash[hash];
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filelist_hash[hash] = filelist_entrys;
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@ -469,10 +439,11 @@ static FILELIST* filelist_add(FILELIST *entry)
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return &filelist[filelist_entrys - 1];
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}
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static FILELIST* filelist_modify(FILELIST *entry)
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// adds a new entry or overwrites an existing one
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static FILELIST* filelist_modify(FILELIST* entry)
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{
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FILELIST *fentry;
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if ((fentry = filelist_find(entry->fn)) != NULL) {
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FILELIST* fentry = filelist_find(entry->fn);
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if (fentry != NULL) {
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int tmp = fentry->next;
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memcpy(fentry, entry, sizeof(FILELIST));
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fentry->next = tmp;
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@ -482,18 +453,15 @@ static FILELIST* filelist_modify(FILELIST *entry)
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return fentry;
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}
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/*==========================================
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* File List : filelist size adjust
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*------------------------------------------
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*/
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// shrinks the file list array if too long
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static void filelist_adjust(void)
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{
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if (filelist != NULL) {
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if (filelist_maxentry > filelist_entrys) {
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filelist = (FILELIST *)realloc(
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filelist, filelist_entrys * sizeof(FILELIST));
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filelist_maxentry = filelist_entrys;
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}
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if (filelist == NULL)
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return;
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if (filelist_entrys < filelist_maxentry) {
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filelist = (FILELIST *)realloc(filelist, filelist_entrys * sizeof(FILELIST));
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filelist_maxentry = filelist_entrys;
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}
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}
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@ -501,13 +469,11 @@ static void filelist_adjust(void)
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*** Grfio Sobroutines ***
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***********************************************************/
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/*==========================================
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* Grfio : Resource file size get
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*------------------------------------------
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*/
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int grfio_size(char *fname)
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// returns a file's size
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/*
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int grfio_size(char* fname)
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{
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FILELIST *entry;
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FILELIST* entry;
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entry = filelist_find(fname);
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@ -519,7 +485,7 @@ int grfio_size(char *fname)
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sprintf(lfname, "%s%s", data_dir, fname);
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for (p = &lfname[0]; *p != 0; p++)
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if (*p=='\\') *p = '/'; // * At the time of Unix
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if (*p=='\\') *p = '/';
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if (stat(lfname, &st) == 0) {
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strncpy(lentry.fn, fname, sizeof(lentry.fn) - 1);
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@ -529,22 +495,21 @@ int grfio_size(char *fname)
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entry = filelist_modify(&lentry);
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} else if (entry == NULL) {
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printf("%s not found (grfio_size)\n", fname);
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//exit(1);
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return -1;
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}
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}
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return entry->declen;
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}
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*/
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/*==========================================
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* Grfio : Resource file read & size get
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*------------------------------------------
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*/
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void* grfio_reads(char *fname, int *size)
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*------------------------------------------*/
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void* grfio_reads(char* fname, int* size)
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{
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FILE *in;
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FILELIST *entry;
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unsigned char *buf2 = NULL;
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FILE* in;
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FILELIST* entry;
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unsigned char* buf2 = NULL;
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entry = filelist_find(fname);
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@ -555,7 +520,7 @@ void* grfio_reads(char *fname, int *size)
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sprintf(lfname, "%s%s", data_dir, fname);
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for (p = &lfname[0]; *p != 0; p++)
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if (*p == '\\') *p = '/'; // * At the time of Unix
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if (*p == '\\') *p = '/';
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in = fopen(lfname, "rb");
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if (in != NULL) {
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@ -582,8 +547,8 @@ void* grfio_reads(char *fname, int *size)
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}
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}
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if (entry != NULL && entry->gentry > 0) { // Archive[GRF] File Read
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char *gfname = gentry_table[entry->gentry - 1];
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in = fopen(gfname, "rb");
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char* grfname = gentry_table[entry->gentry - 1];
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in = fopen(grfname, "rb");
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if(in != NULL) {
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unsigned char *buf = (unsigned char *)malloc(entry->srclen_aligned + 1024);
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fseek(in, entry->srcpos, 0);
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@ -607,7 +572,7 @@ void* grfio_reads(char *fname, int *size)
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}
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free(buf);
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} else {
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printf("%s not found (grfio_reads - GRF file %s)\n", fname, gfname);
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printf("%s not found (grfio_reads - GRF file %s)\n", fname, grfname);
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return NULL;
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}
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}
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@ -619,9 +584,8 @@ void* grfio_reads(char *fname, int *size)
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/*==========================================
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* Resource filename decode
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*------------------------------------------
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*/
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static char * decode_filename(unsigned char *buf,int len)
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*------------------------------------------*/
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static char* decode_filename(unsigned char* buf, int len)
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{
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int lop;
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for(lop=0;lop<len;lop+=8) {
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@ -635,23 +599,22 @@ static char * decode_filename(unsigned char *buf,int len)
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/*==========================================
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* Grfio : Entry table read
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*------------------------------------------
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*/
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static int grfio_entryread(char *gfname,int gentry)
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*------------------------------------------*/
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static int grfio_entryread(char* grfname, int gentry)
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{
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FILE *fp;
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FILE* fp;
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long grf_size,list_size;
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unsigned char grf_header[0x2e];
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int lop,entry,entrys,ofs,grf_version;
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char *fname;
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unsigned char *grf_filelist;
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fp = fopen(gfname, "rb");
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fp = fopen(grfname, "rb");
|
||||
if (fp == NULL) {
|
||||
printf("GRF data file not found: '%s'\n",gfname);
|
||||
printf("GRF data file not found: '%s'\n",grfname);
|
||||
return 1; // 1:not found error
|
||||
} else
|
||||
printf("GRF data file found: '%s'\n",gfname);
|
||||
printf("GRF data file found: '%s'\n",grfname);
|
||||
|
||||
fseek(fp,0,2); // SEEK_END
|
||||
grf_size = ftell(fp);
|
||||
@ -661,7 +624,7 @@ static int grfio_entryread(char *gfname,int gentry)
|
||||
fseek(fp,getlong(grf_header+0x1e),1)) // SEEK_CUR
|
||||
{
|
||||
fclose(fp);
|
||||
printf("GRF %s read error\n",gfname);
|
||||
printf("GRF %s read error\n", grfname);
|
||||
return 2; // 2:file format error
|
||||
}
|
||||
|
||||
@ -679,7 +642,7 @@ static int grfio_entryread(char *gfname,int gentry)
|
||||
for (entry = 0,ofs = 0; entry < entrys; entry++) {
|
||||
int ofs2, srclen, srccount;
|
||||
unsigned char type;
|
||||
char *period_ptr;
|
||||
char* period_ptr;
|
||||
FILELIST aentry;
|
||||
|
||||
ofs2 = ofs+getlong(grf_filelist+ofs)+4;
|
||||
@ -807,22 +770,21 @@ static int grfio_entryread(char *gfname,int gentry)
|
||||
|
||||
/*==========================================
|
||||
* Grfio : Resource file check
|
||||
*------------------------------------------
|
||||
*/
|
||||
*------------------------------------------*/
|
||||
static void grfio_resourcecheck(void)
|
||||
{
|
||||
char w1[256], w2[256], src[256], dst[256], restable[256], line[256];
|
||||
char *ptr, *buf;
|
||||
FILELIST *entry;
|
||||
int size, i = 0;
|
||||
FILE *fp;
|
||||
FILELIST* entry;
|
||||
int size;
|
||||
FILE* fp;
|
||||
|
||||
// read resnametable from data directory and return if successful
|
||||
sprintf(restable, "%sdata\\resnametable.txt", data_dir);
|
||||
for (ptr = &restable[0]; *ptr != 0; ptr++)
|
||||
if (*ptr == '\\') *ptr = '/';
|
||||
|
||||
fp = fopen(restable,"rb");
|
||||
fp = fopen(restable, "rb");
|
||||
if (fp) {
|
||||
while (fgets(line, sizeof(line) - 1, fp)) {
|
||||
if (sscanf(line, "%[^#]#%[^#]#", w1, w2) == 2 &&
|
||||
@ -839,7 +801,6 @@ static void grfio_resourcecheck(void)
|
||||
strncpy(fentry.fn, src, sizeof(fentry.fn) - 1);
|
||||
fentry.fnd = grfio_alloc_ptr(dst);
|
||||
filelist_modify(&fentry);
|
||||
i++;
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -867,10 +828,9 @@ static void grfio_resourcecheck(void)
|
||||
strncpy(fentry.fn, src, sizeof(fentry.fn) - 1);
|
||||
fentry.fnd = grfio_alloc_ptr(dst);
|
||||
filelist_modify(&fentry);
|
||||
i++;
|
||||
}
|
||||
}
|
||||
ptr = strchr(ptr,'\n'); // Next line
|
||||
ptr = strchr(ptr, '\n'); // Next line
|
||||
if (!ptr) break;
|
||||
ptr++;
|
||||
}
|
||||
@ -882,44 +842,33 @@ static void grfio_resourcecheck(void)
|
||||
|
||||
/*==========================================
|
||||
* Grfio : Resource add
|
||||
*------------------------------------------
|
||||
*/
|
||||
*------------------------------------------*/
|
||||
#define GENTRY_ADDS 4 // The number increment of gentry_table entries
|
||||
|
||||
static int grfio_add(char *fname)
|
||||
static int grfio_add(char* fname)
|
||||
{
|
||||
grfio_alloc_ptr(fname);
|
||||
|
||||
return grfio_entryread(fname, gentry_entrys - 1);
|
||||
}
|
||||
|
||||
char *grfio_alloc_ptr(char *fname)
|
||||
// adds a copy of 'fname' into the gentry_table
|
||||
char* grfio_alloc_ptr(char* fname)
|
||||
{
|
||||
size_t len;
|
||||
char *buf;
|
||||
|
||||
if (gentry_entrys >= GENTRY_LIMIT) {
|
||||
printf("GRF file entry limit reached!\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
if (gentry_entrys >= gentry_maxentry) {
|
||||
gentry_maxentry += GENTRY_ADDS;
|
||||
gentry_table = (char**)realloc(gentry_table, gentry_maxentry * sizeof(char*));
|
||||
memset(gentry_table + (gentry_maxentry - GENTRY_ADDS), 0, sizeof(char*) * GENTRY_ADDS);
|
||||
}
|
||||
len = strlen( fname );
|
||||
buf = (char*)malloc(len + 1);
|
||||
strcpy(buf, fname);
|
||||
gentry_table[gentry_entrys++] = buf;
|
||||
|
||||
return buf;
|
||||
gentry_table[gentry_entrys++] = strdup(fname);
|
||||
|
||||
return gentry_table[gentry_entrys - 1];
|
||||
}
|
||||
|
||||
/*==========================================
|
||||
* Grfio : Finalize
|
||||
*------------------------------------------
|
||||
*/
|
||||
*------------------------------------------*/
|
||||
void grfio_final(void)
|
||||
{
|
||||
if (filelist != NULL)
|
||||
@ -928,10 +877,10 @@ void grfio_final(void)
|
||||
filelist_entrys = filelist_maxentry = 0;
|
||||
|
||||
if (gentry_table != NULL) {
|
||||
int lop;
|
||||
for (lop = 0; lop < gentry_entrys; lop++) {
|
||||
if (gentry_table[lop] != NULL)
|
||||
free(gentry_table[lop]);
|
||||
int i;
|
||||
for (i = 0; i < gentry_entrys; i++) {
|
||||
if (gentry_table[i] != NULL)
|
||||
free(gentry_table[i]);
|
||||
}
|
||||
free(gentry_table);
|
||||
}
|
||||
@ -941,11 +890,10 @@ void grfio_final(void)
|
||||
|
||||
/*==========================================
|
||||
* Grfio : Initialize
|
||||
*------------------------------------------
|
||||
*/
|
||||
void grfio_init(char *fname)
|
||||
*------------------------------------------*/
|
||||
void grfio_init(char* fname)
|
||||
{
|
||||
FILE *data_conf;
|
||||
FILE* data_conf;
|
||||
char line[1024], w1[1024], w2[1024];
|
||||
int grf_num = 0;
|
||||
|
||||
@ -976,6 +924,7 @@ void grfio_init(char *fname)
|
||||
|
||||
// Unnecessary area release of filelist
|
||||
filelist_adjust();
|
||||
|
||||
// Resource check
|
||||
grfio_resourcecheck();
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user