+++ /dev/null
-/*
- * The 3D Studio File Format Library
- * Copyright (C) 1996-2001 by J.E. Hoffmann <je-h@gmx.net>
- * All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation; either version 2.1 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 Lesser General Public
- * License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * $Id: chunk.c,v 1.14 2001/07/07 19:05:30 jeh Exp $
- */
-#define LIB3DS_EXPORT
-#include <lib3ds/chunk.h>
-#include <lib3ds/io.h>
-#include <lib3ds/chunktable.h>
-#include <string.h>
-#include <stdarg.h>
-
-
-/*#define LIB3DS_CHUNK_DEBUG*/
-/*#define LIB3DS_CHUNK_WARNING*/
-
-
-/*!
- * \defgroup chunk Chunk Handling
- *
- * \author J.E. Hoffmann <je-h@gmx.net>
- */
-
-
-static Lib3dsBool enable_dump=LIB3DS_FALSE;
-static Lib3dsBool enable_unknown=LIB3DS_FALSE;
-static char lib3ds_chunk_level[128]="";
-
-
-static void
-lib3ds_chunk_debug_enter(Lib3dsChunk *c)
-{
- strcat(lib3ds_chunk_level, " ");
-}
-
-
-static void
-lib3ds_chunk_debug_leave(Lib3dsChunk *c)
-{
- lib3ds_chunk_level[strlen(lib3ds_chunk_level)-2]=0;
-}
-
-
-static void
-lib3ds_chunk_debug_dump(Lib3dsChunk *c)
-{
- if (enable_dump) {
- printf("%s%s (0x%X) size=%lu\n",
- lib3ds_chunk_level,
- lib3ds_chunk_name(c->chunk),
- c->chunk,
- c->size
- );
- }
-}
-
-
-/*!
- * \ingroup chunk
- */
-void
-lib3ds_chunk_enable_dump(Lib3dsBool enable, Lib3dsBool unknown)
-{
- enable_dump=enable;
- enable_unknown=unknown;
-}
-
-
-/*!
- * \ingroup chunk
- *
- * Reads a 3d-Studio chunk header from a little endian file stream.
- *
- * \param c The chunk to store the data.
- * \param f The file stream.
- *
- * \return True on success, False otherwise.
- */
-Lib3dsBool
-lib3ds_chunk_read(Lib3dsChunk *c, Lib3dsIo *io)
-{
- ASSERT(c);
- ASSERT(io);
- c->cur=lib3ds_io_tell(io);
- c->chunk=lib3ds_io_read_word(io);
- c->size=lib3ds_io_read_dword(io);
- c->end=c->cur+c->size;
- c->cur+=6;
- if (lib3ds_io_error(io) || (c->size<6)) {
- return(LIB3DS_FALSE);
- }
- return(LIB3DS_TRUE);
-
-}
-
-
-/*!
- * \ingroup chunk
- */
-Lib3dsBool
-lib3ds_chunk_read_start(Lib3dsChunk *c, Lib3dsWord chunk, Lib3dsIo *io)
-{
- ASSERT(c);
- ASSERT(io);
- if (!lib3ds_chunk_read(c, io)) {
- return(LIB3DS_FALSE);
- }
- lib3ds_chunk_debug_enter(c);
- return((chunk==0) || (c->chunk==chunk));
-}
-
-
-/*!
- * \ingroup chunk
- */
-void
-lib3ds_chunk_read_tell(Lib3dsChunk *c, Lib3dsIo *io)
-{
- c->cur=lib3ds_io_tell(io);
-}
-
-
-/*!
- * \ingroup chunk
- */
-Lib3dsWord
-lib3ds_chunk_read_next(Lib3dsChunk *c, Lib3dsIo *io)
-{
- Lib3dsChunk d;
-
- if (c->cur>=c->end) {
- ASSERT(c->cur==c->end);
- return(0);
- }
-
- lib3ds_io_seek(io, (long)c->cur, LIB3DS_SEEK_SET);
- d.chunk=lib3ds_io_read_word(io);
- d.size=lib3ds_io_read_dword(io);
- lib3ds_chunk_debug_dump(&d);
- c->cur+=d.size;
- return(d.chunk);
-}
-
-
-/*!
- * \ingroup chunk
- */
-void
-lib3ds_chunk_read_reset(Lib3dsChunk *c, Lib3dsIo *io)
-{
- lib3ds_io_seek(io, -6, LIB3DS_SEEK_CUR);
-}
-
-
-/*!
- * \ingroup chunk
- */
-void
-lib3ds_chunk_read_end(Lib3dsChunk *c, Lib3dsIo *io)
-{
- lib3ds_chunk_debug_leave(c);
- lib3ds_io_seek(io, c->end, LIB3DS_SEEK_SET);
-}
-
-
-/*!
- * \ingroup chunk
- *
- * Writes a 3d-Studio chunk header into a little endian file stream.
- *
- * \param c The chunk to be written.
- * \param f The file stream.
- *
- * \return True on success, False otherwise.
- */
-Lib3dsBool
-lib3ds_chunk_write(Lib3dsChunk *c, Lib3dsIo *io)
-{
- ASSERT(c);
- if (!lib3ds_io_write_word(io, c->chunk)) {
- LIB3DS_ERROR_LOG;
- return(LIB3DS_FALSE);
- }
- if (!lib3ds_io_write_dword(io, c->size)) {
- LIB3DS_ERROR_LOG;
- return(LIB3DS_FALSE);
- }
- return(LIB3DS_TRUE);
-}
-
-
-/*!
- * \ingroup chunk
- */
-Lib3dsBool
-lib3ds_chunk_write_start(Lib3dsChunk *c, Lib3dsIo *io)
-{
- ASSERT(c);
- c->size=0;
- c->cur=lib3ds_io_tell(io);
- if (!lib3ds_io_write_word(io, c->chunk)) {
- return(LIB3DS_FALSE);
- }
- if (!lib3ds_io_write_dword(io, c->size)) {
- return(LIB3DS_FALSE);
- }
- return(LIB3DS_TRUE);
-}
-
-
-/*!
- * \ingroup chunk
- */
-Lib3dsBool
-lib3ds_chunk_write_end(Lib3dsChunk *c, Lib3dsIo *io)
-{
- ASSERT(c);
- c->size=lib3ds_io_tell(io) - c->cur;
- lib3ds_io_seek(io, c->cur+2, LIB3DS_SEEK_SET);
- if (!lib3ds_io_write_dword(io, c->size)) {
- LIB3DS_ERROR_LOG;
- return(LIB3DS_FALSE);
- }
-
- c->cur+=c->size;
- lib3ds_io_seek(io, c->cur, LIB3DS_SEEK_SET);
- if (lib3ds_io_error(io)) {
- LIB3DS_ERROR_LOG;
- return(LIB3DS_FALSE);
- }
- return(LIB3DS_TRUE);
-}
-
-
-/*!
- * \ingroup chunk
- */
-const char*
-lib3ds_chunk_name(Lib3dsWord chunk)
-{
- Lib3dsChunkTable *p;
-
- for (p=lib3ds_chunk_table; p->name!=0; ++p) {
- if (p->chunk==chunk) {
- return(p->name);
- }
- }
- return("***UNKNOWN***");
-}
-
-
-/*!
- * \ingroup chunk
- */
-void
-lib3ds_chunk_unknown(Lib3dsWord chunk)
-{
- if (enable_unknown) {
- printf("%s***WARNING*** Unknown Chunk: %s (0x%X)\n",
- lib3ds_chunk_level,
- lib3ds_chunk_name(chunk),
- chunk
- );
- }
-}
-
-
-/*!
- * \ingroup chunk
- */
-void
-lib3ds_chunk_dump_info(const char *format, ...)
-{
- if (enable_dump) {
- char s[1024];
- va_list marker;
-
- va_start(marker, format);
- vsprintf(s, format, marker);
- va_end(marker);
-
- printf("%s%s\n", lib3ds_chunk_level, s);
- }
-}
-
-
-
-
-
-
-
projects / summerhack / blobdiff