applied changes from 0.3pre6 (patch from rev40 to rev49)

git-svn-id: https://clonekeenplus.svn.sourceforge.net/svnroot/clonekeenplus/cgenius/trunk@79 4df4b0f3-56ce-47cb-b001-ed939b7d65a6

src/fileio/CExeFile.cpp

@@ -0,0 +1,222 @@
+/*
+ * CExeFile.cpp
+ *
+ *  Created on: 17.07.2009
+ *      Author: gerstrong
+ */
+
+#include "CExeFile.h"
+#include <string.h>
+#include <iostream>
+#include <fstream>
+using namespace std;
+
+CExeFile::CExeFile(int episode, char *datadirectory) {
+	m_episode = episode;
+	m_datadirectory = datadirectory;
+	m_data = NULL;
+}
+
+CExeFile::~CExeFile() {
+	if(m_data) delete m_data;
+}
+
+bool CExeFile::readData()
+{
+	char filename[256];
+	unsigned char *m_data_temp;
+
+	sprintf(filename, "data/%skeen%d.exe", m_datadirectory, m_episode);
+
+	ifstream File(filename,ios::binary);
+
+	if(!File) return false;
+
+	File.seekg(0,ios::end);
+	m_datasize = File.tellg();
+	File.seekg(0,ios::beg);
+
+	m_data_temp = new unsigned char[m_datasize];
+	File.read((char*)m_data_temp, m_datasize);
+
+	File.close();
+
+	vector<unsigned char> *decdata;
+	decdata = new vector<unsigned char>;
+
+	if(unlzexe(m_data_temp, decdata))
+	{
+		m_datasize = decdata->size();
+		m_data = new unsigned char[m_datasize];
+		memcpy(m_data, decdata->data(), m_datasize);
+	}
+	else
+	{
+		m_datasize -= 512; // if already decompressed subtract the header
+		m_data = new unsigned char[m_datasize];
+		memcpy(m_data, m_data_temp+512,m_datasize);
+	}
+	delete m_data_temp;
+
+	if(!decdata->empty()) decdata->clear();
+	delete decdata;
+
+	return true;
+}
+
+int CExeFile::get_bit(int *p_bit_count, unsigned char *fin, int *posin)
+{
+  static unsigned short bits;
+  int bit;
+
+  bit = bits & 1;
+  (*p_bit_count)--;
+
+  if ((*p_bit_count) <= 0)
+  {
+	  unsigned short a,b;
+	  a = (unsigned char) fin[(*posin)++];
+	  b = (unsigned char) fin[(*posin)++] << 8;
+	  bits = a | b;
+
+    if ((*p_bit_count) == -1) /* special case for first bit word */
+    {
+      bit = bits & 1;
+      bits >>= 1;
+    }
+
+    (*p_bit_count) += 16;
+  }
+  else
+    bits >>= 1;
+
+  return bit;
+}
+
+// return how much was unpacked or zero if nothing was unpacked
+int CExeFile::unlzexe(unsigned char *fin, vector<unsigned char> *outbuffer)
+{
+	  int bit_count;
+	  short offset;
+	  int pos, repeat;
+	  int posin = 0;	// position of input
+
+	  pos = 0;
+	  bit_count = 0;
+
+      /* skip header */
+	  posin = 32;
+
+	  while (1)
+	  {
+
+		  if (get_bit(&bit_count, fin, &posin))
+		  {
+			  outbuffer->push_back(fin[posin]);
+			  //outbuffer[pos] = fin[posin];
+			  pos++;
+			  posin++;
+		  }
+		  else
+		  {
+			  if (get_bit(&bit_count, fin, &posin))
+			  {
+				  unsigned char tmp[2];
+				  memcpy(tmp,fin+posin,2);
+				  posin+=2;
+				  repeat = (tmp[1] & 0x07);
+
+				  offset = ((tmp[1] & ~0x07) << 5) | tmp[0] | 0xE000;
+
+				  if (repeat == 0)
+				  {
+					  repeat = fin[posin++];
+
+					  if (repeat == 0)
+						  break;
+					  else if (repeat == 1)
+						  continue;
+					  else
+						  repeat++;
+				  }
+				  else
+					  repeat += 2;
+
+
+
+			  }
+			  else
+			  {
+				  repeat = get_bit(&bit_count, fin, &posin) << 1;
+				  repeat |= get_bit(&bit_count, fin, &posin);
+				  repeat += 2;
+				  offset = fin[posin++] | 0xFF00;
+			  }
+
+			  while (repeat > 0)
+			  {
+				  outbuffer->push_back(outbuffer->at(pos + offset));
+				  //outbuffer[pos] = outbuffer[pos + offset];
+				  pos++;
+				  repeat--;
+			  }
+		}
+	  }
+
+	  return pos;
+}
+
+int CExeFile::getEXEVersion()
+{
+    switch (m_datasize)
+    {
+		case 99762:
+			if(m_episode != 1)
+				return -1;
+			else
+				return 110;
+		case 99972:
+			if(m_episode != 1)
+				return -1;
+			else
+				return 131;
+
+		case 398:
+			if(m_episode != 1)
+				return -1;
+			else
+				return 134;
+
+		case 118114:
+			if(m_episode != 2)
+				return -1;
+			else
+				return 100;
+
+		case 118160:
+
+			if(m_episode != 2)
+				return -1;
+			else
+				return 131;
+
+		case 127086:
+
+			if(m_episode != 3)
+				return -1;
+			else
+				return 100;
+
+		case 127104:
+			if(m_episode != 3)
+				return -1;
+			else
+				return 131;
+
+		default: return -2;
+    }
+}
+
+unsigned char* CExeFile::getData()
+{	return m_data;	}
+