diff options
Diffstat (limited to 'src/common/metafile.cpp')
| -rw-r--r-- | src/common/metafile.cpp | 418 |
1 files changed, 418 insertions, 0 deletions
diff --git a/src/common/metafile.cpp b/src/common/metafile.cpp new file mode 100644 index 0000000..d7e260e --- /dev/null +++ b/src/common/metafile.cpp @@ -0,0 +1,418 @@ +// * This file is part of the COLOBOT source code
+// * Copyright (C) 2001-2008, Daniel ROUX & EPSITEC SA, www.epsitec.ch
+// *
+// * 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 3 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, see http://www.gnu.org/licenses/.
+
+// metafile.cpp
+
+#define STRICT
+#define D3D_OVERLOADS
+
+#include <windows.h>
+#include <stdio.h>
+
+#include "language.h"
+#include "metafile.h"
+
+
+
+
+#if _FULL | _NET
+static unsigned char table_codec[23] =
+{
+ 0x85, 0x91, 0x73, 0xcf, 0xa2, 0xbb, 0xf4, 0x77,
+ 0x58, 0x39, 0x37, 0xfd, 0x2a, 0xcc, 0x5f, 0x55,
+ 0x96, 0x90, 0x07, 0xcd, 0x11, 0x88, 0x21,
+};
+
+void Codec(void* buffer, int len, int start)
+{
+ unsigned char *b = (unsigned char*)buffer;
+ int i;
+
+ for ( i=0 ; i<len ; i++ )
+ {
+ b[i] ^= table_codec[(start++)%23];
+ }
+}
+#endif
+
+#if _SCHOOL
+#if _CEEBOTDEMO
+static unsigned char table_codec[136] =
+{
+ 0x76, 0x76, 0x76, 0x76, 0x76, 0x76, 0x76, 0x76,
+ 0x76, 0x76, 0x76, 0x76, 0x76, 0x76, 0x76, 0x76,
+ 0x76, 0x76, 0x76, 0x76, 0x76, 0x76, 0x76, 0x76,
+ 0x76, 0x76, 0x76, 0x76, 0x76, 0x76, 0x76, 0x76,
+ 0x76, 0x76, 0x76, 0x76, 0x76, 0x76, 0x76, 0x76,
+ 0x76, 0x76, 0x76, 0x76, 0x76, 0x76, 0x76, 0x76,
+ 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5,
+ 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5,
+ 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5,
+ 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5,
+ 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5,
+ 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5,
+ 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5,
+ 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5,
+ 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5,
+ 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5,
+ 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5,
+};
+
+void Codec(void* buffer, int len, int start)
+{
+ unsigned char *b = (unsigned char*)buffer;
+ int i;
+
+ for ( i=0 ; i<len ; i++ )
+ {
+ b[i] ^= table_codec[(start++)%136];
+ }
+}
+#else
+static unsigned char table_codec[29] =
+{
+ 0x72, 0x91, 0x37, 0xdf, 0xa1, 0xcc, 0xf5, 0x67,
+ 0x53, 0x40, 0xd3, 0xed, 0x3a, 0xbb, 0x5e, 0x43,
+ 0x67, 0x9a, 0x0c, 0xed, 0x33, 0x77, 0x2f, 0xf2,
+ 0xe3, 0x42, 0x11, 0x5e, 0xc2,
+};
+
+void Codec(void* buffer, int len, int start)
+{
+ unsigned char *b = (unsigned char*)buffer;
+ int i;
+
+ for ( i=0 ; i<len ; i++ )
+ {
+ b[i] ^= table_codec[(start++)%29];
+ }
+}
+#endif
+#endif
+
+#if _DEMO
+static unsigned char table_codec[27] =
+{
+ 0x85, 0x91, 0x77, 0xcf, 0xa3, 0xbb, 0xf4, 0x77,
+ 0x58, 0x39, 0x37, 0xfd, 0x2a, 0xcc, 0x7f, 0x55,
+ 0x96, 0x80, 0x07, 0xcd, 0x11, 0x88, 0x21, 0x44,
+ 0x17, 0xee, 0xf0,
+};
+
+void Codec(void* buffer, int len, int start)
+{
+ unsigned char *b = (unsigned char*)buffer;
+ int i;
+
+ for ( i=0 ; i<len ; i++ )
+ {
+ b[i] ^= table_codec[(start++)%27];
+ }
+}
+#endif
+
+
+
+// Object's constructor.
+
+CMetaFile::CMetaFile()
+{
+ int i;
+
+ for ( i=0 ; i<METAMAX ; i++ )
+ {
+ m_list[i].stream = 0;
+ m_list[i].headers = 0;
+ }
+
+ m_bMeta = FALSE;
+ m_bOpen = FALSE;
+ m_start = 0;
+ m_pos = 0;
+ m_len = 0;
+ m_stream = 0;
+}
+
+// Object's destructor.
+
+CMetaFile::~CMetaFile()
+{
+ MetaClose();
+}
+
+
+// Test if a file exists.
+
+BOOL CMetaFile::IsExist(char *metaname, char *filename)
+{
+ FILE* file;
+ int index, i;
+
+ if ( metaname[0] == 0 )
+ {
+ file = fopen(filename, "rb");
+ if ( file == NULL ) return FALSE;
+ fclose(file);
+ return TRUE;
+ }
+ else
+ {
+ index = MetaOpen(metaname);
+ if ( index == -1 ) return 1;
+
+ for ( i=0 ; i<m_list[index].total ; i++ )
+ {
+ if ( strcmp(m_list[index].headers[i].name, filename) == 0 )
+ {
+ return TRUE;
+ }
+ }
+ return FALSE;
+ }
+}
+
+// Opens a file. If metaname is empty, it normally opens a file.
+
+int CMetaFile::Open(char *metaname, char *filename)
+{
+ int index, i;
+
+ if ( m_bOpen ) // file already open?
+ {
+ Close();
+ }
+
+ if ( metaname[0] == 0 )
+ {
+ m_stream = fopen(filename, "rb");
+ if ( m_stream == 0 ) return 1;
+ m_bOpen = TRUE;
+ m_bMeta = FALSE;
+ return 0;
+ }
+ else
+ {
+ index = MetaOpen(metaname);
+ if ( index == -1 ) return 1;
+
+ for ( i=0 ; i<m_list[index].total ; i++ )
+ {
+ if ( strcmp(m_list[index].headers[i].name, filename) == 0 )
+ {
+ m_stream = m_list[index].stream;
+ m_start = m_list[index].headers[i].start;
+ m_len = m_list[index].headers[i].len;
+ m_bOpen = TRUE;
+ m_bMeta = TRUE;
+ Seek(0);
+ return 0;
+ }
+ }
+ return 1;
+ }
+}
+
+// Returns the length of a file.
+
+int CMetaFile::RetLength()
+{
+ int len;
+
+ if ( !m_bOpen ) return 0;
+
+ if ( m_bMeta )
+ {
+ len = m_len;
+ }
+ else
+ {
+ fseek(m_stream, 0, SEEK_END);
+ len = ftell(m_stream);
+ fseek(m_stream, 0, SEEK_SET);
+ }
+ return len;
+}
+
+// Positioning in the file, relative to the beginning.
+
+int CMetaFile::Seek(int offset)
+{
+ if ( !m_bOpen ) return 1;
+
+ if ( m_bMeta )
+ {
+ m_pos = m_start+offset;
+ return fseek(m_stream, m_start+offset, SEEK_SET);
+ }
+ else
+ {
+ return fseek(m_stream, offset, SEEK_SET);
+ }
+}
+
+// Reads bytes number.
+
+int CMetaFile::Read(void *buffer, int size)
+{
+ int err;
+
+ if ( !m_bOpen ) return 1;
+
+ if ( m_bMeta )
+ {
+ err = fread(buffer, size, 1, m_stream);
+ Codec(buffer, size, m_pos);
+ m_pos += size;
+ return err;
+ }
+ else
+ {
+ return fread(buffer, size, 1, m_stream);
+ }
+}
+
+// Reads a byte.
+
+int CMetaFile::GetByte()
+{
+ BYTE b;
+
+ if ( !m_bOpen ) return 1;
+
+ b = getc(m_stream);
+ if ( m_bMeta )
+ {
+ Codec(&b, 1, m_pos);
+ m_pos += 1;
+ }
+ return b;
+}
+
+// Reads 2 bytes.
+
+int CMetaFile::GetWord()
+{
+ WORD w;
+
+ if ( !m_bOpen ) return 1;
+
+ w = getc(m_stream);
+ if ( m_bMeta )
+ {
+ Codec(&w, 2, m_pos);
+ m_pos += 2;
+ }
+ return w;
+}
+
+// Closes the file.
+
+int CMetaFile::Close()
+{
+ if ( !m_bOpen ) return 1;
+
+ if ( !m_bMeta )
+ {
+ fclose(m_stream);
+ }
+ m_bOpen = FALSE;
+ m_stream = 0;
+
+ return 0;
+}
+
+
+// Opens a metafile. Returns the index or -1.
+
+int CMetaFile::MetaOpen(char *metaname)
+{
+ int i, j, offset;
+
+ i = MetaSearch(metaname);
+ if ( i != -1 ) return i;
+
+ for ( i=0 ; i<METAMAX ; i++ )
+ {
+ if ( m_list[i].stream == 0 )
+ {
+ m_list[i].stream = fopen(metaname, "rb");
+ if ( m_list[i].stream == 0 ) return -1;
+
+ strcpy(m_list[i].name, metaname); // memorized the name
+
+ fread(&m_list[i].total, sizeof(int), 1, m_list[i].stream);
+ m_list[i].headers = (MetaHeader*)malloc(sizeof(MetaHeader)*m_list[i].total);
+
+ offset = 4;
+ for ( j=0 ; j<m_list[i].total ; j++ )
+ {
+ fread(&m_list[i].headers[j], sizeof(MetaHeader), 1, m_list[i].stream);
+ Codec(&m_list[i].headers[j], sizeof(MetaHeader), offset);
+ offset += sizeof(MetaHeader);
+ }
+ return i;
+ }
+ }
+
+ return -1;
+}
+
+// Seeks if the metafile is already open. Returns the index or -1.
+
+int CMetaFile::MetaSearch(char *metaname)
+{
+ int i;
+
+ for ( i=0 ; i<METAMAX ; i++ )
+ {
+ if ( m_list[i].stream != 0 )
+ {
+ if ( strcmp(m_list[i].name, metaname) == 0 ) return i;
+ }
+ }
+
+ return -1;
+}
+
+// Closes all metafiles.
+
+int CMetaFile::MetaClose()
+{
+ int i;
+
+ if ( m_stream != 0 )
+ {
+ fclose(m_stream);
+ m_stream = 0;
+ }
+
+ for ( i=0 ; i<METAMAX ; i++ )
+ {
+ if ( m_list[i].stream != 0 )
+ {
+ free(m_list[i].headers);
+ m_list[i].headers = 0;
+
+ fclose(m_list[i].stream);
+ m_list[i].stream = 0;
+ }
+ }
+
+ return 0;
+}
+
+
+
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