diff options
Diffstat (limited to 'devtools/create_kyradat/pak.cpp')
-rw-r--r-- | devtools/create_kyradat/pak.cpp | 250 |
1 files changed, 250 insertions, 0 deletions
diff --git a/devtools/create_kyradat/pak.cpp b/devtools/create_kyradat/pak.cpp new file mode 100644 index 0000000000..4179f42df0 --- /dev/null +++ b/devtools/create_kyradat/pak.cpp @@ -0,0 +1,250 @@ +/* ScummVM - Graphic Adventure Engine + * + * ScummVM is the legal property of its developers, whose names + * are too numerous to list here. Please refer to the COPYRIGHT + * file distributed with this source distribution. + * + * 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. + * + * $URL$ + * $Id$ + * + */ + +// Disable symbol overrides so that we can use system headers. +#define FORBIDDEN_SYMBOL_ALLOW_ALL + +#include "pak.h" + +bool PAKFile::loadFile(const char *file, const bool isAmiga) { + _isAmiga = isAmiga; + if (!file) + return true; + + delete _fileList; + _fileList = 0; + + FILE *pakfile = fopen(file, "rb"); + if (!pakfile) + return false; + + uint32 filesize = fileSize(pakfile); + + // TODO: get rid of temp. buffer + uint8 *buffer = new uint8[filesize]; + assert(buffer); + + fread(buffer, filesize, 1, pakfile); + + fclose(pakfile); + + const char *currentName = 0; + + uint32 startoffset = _isAmiga ? READ_BE_UINT32(buffer) : READ_LE_UINT32(buffer); + uint32 endoffset = 0; + uint8* position = buffer + 4; + + while (true) { + uint32 strlgt = strlen((const char*)position); + currentName = (const char*)position; + + if (!(*currentName)) + break; + + position += strlgt + 1; + endoffset = _isAmiga ? READ_BE_UINT32(position) : READ_LE_UINT32(position); + if (endoffset > filesize) { + endoffset = filesize; + } else if (endoffset == 0) { + endoffset = filesize; + } + position += 4; + + uint8 *data = new uint8[endoffset - startoffset]; + assert(data); + memcpy(data, buffer + startoffset, endoffset - startoffset); + addFile(currentName, data, endoffset - startoffset); + data = 0; + + if (endoffset == filesize) + break; + + startoffset = endoffset; + } + + delete[] buffer; + return true; +} + +bool PAKFile::saveFile(const char *file) { + if (!_fileList) + return true; + + FILE *f = fopen(file, "wb"); + if (!f) { + error("couldn't open file '%s' for writing", file); + return false; + } + + // TODO: implement error handling + uint32 startAddr = _fileList->getTableSize()+5+4; + static const char *zeroName = "\0\0\0\0\0"; + + uint32 curAddr = startAddr; + for (FileList *cur = _fileList; cur; cur = cur->next) { + if (_isAmiga) + writeUint32BE(f, curAddr); + else + writeUint32LE(f, curAddr); + fwrite(cur->filename, 1, strlen(cur->filename) + 1, f); + curAddr += cur->size; + } + if (_isAmiga) + writeUint32BE(f, curAddr); + else + writeUint32LE(f, curAddr); + fwrite(zeroName, 1, 5, f); + + for (FileList *cur = _fileList; cur; cur = cur->next) + fwrite(cur->data, 1, cur->size, f); + + fclose(f); + return true; +} + +void PAKFile::drawFileList() { + FileList *cur = _fileList; + while (cur) { + printf("Filename: '%s' size: %d\n", cur->filename, cur->size); + cur = cur->next; + } +} + +bool PAKFile::outputAllFiles() { + FileList *cur = _fileList; + while (cur) { + FILE *file = fopen(cur->filename, "wb"); + if (!file) { + error("couldn't open file '%s' for writing", cur->filename); + return false; + } + printf("Exracting file '%s'...", cur->filename); + if (fwrite(cur->data, 1, cur->size, file) == cur->size) { + printf("OK\n"); + } else { + printf("FAILED\n"); + return false; + } + fclose(file); + cur = cur->next; + } + return true; +} + +bool PAKFile::outputFileAs(const char *f, const char *fn) { + FileList *cur = (_fileList != 0) ? _fileList->findEntry(f) : 0; + + if (!cur) { + error("file '%s' not found", f); + return false; + } + + FILE *file = fopen(fn, "wb"); + if (!file) { + error("couldn't open file '%s' in write mode", fn); + return false; + } + printf("Exracting file '%s' to file '%s'...", cur->filename, fn); + if (fwrite(cur->data, 1, cur->size, file) == cur->size) { + printf("OK\n"); + } else { + printf("FAILED\n"); + return false; + } + fclose(file); + return true; +} + +const uint8 *PAKFile::getFileData(const char *file, uint32 *size) { + FileList *cur = (_fileList != 0) ? _fileList->findEntry(file) : 0; + + if (!cur) + return 0; + + if (size) + *size = cur->size; + return cur->data; +} + +bool PAKFile::addFile(const char *name, const char *file) { + if (_fileList && _fileList->findEntry(name)) { + error("entry '%s' already exists", name); + return false; + } + + FILE *f = fopen(file, "rb"); + if (!f) { + error("couldn't open file '%s'", file); + return false; + } + + uint32 filesize = fileSize(f); + uint8 *data = new uint8[filesize]; + assert(data); + if (fread(data, 1, filesize, f) != filesize) { + error("couldn't read from file '%s'", file); + return false; + } + fclose(f); + return addFile(name, data, filesize); +} + +bool PAKFile::addFile(const char *name, uint8 *data, uint32 size) { + if (_fileList && _fileList->findEntry(name)) { + error("entry '%s' already exists", name); + return false; + } + + FileList *newEntry = new FileList; + assert(newEntry); + newEntry->filename = new char[strlen(name)+1]; + assert(newEntry->filename); + strncpy(newEntry->filename, name, strlen(name)+1); + newEntry->size = size; + newEntry->data = data; + + if (_fileList) { + _fileList->addEntry(newEntry); + } else { + _fileList = newEntry; + } + return true; +} + +bool PAKFile::removeFile(const char *name) { + for (FileList *cur = _fileList, *last = 0; cur; last = cur, cur = cur->next) { + if (scumm_stricmp(cur->filename, name) == 0) { + FileList *next = cur->next; + cur->next = 0; + delete cur; + if (last) + last->next = next; + else + _fileList = next; + return true; + } + } + return false; +} |