usbloadergx/source/network/HTML_Stream.cpp
giantpune 9e79c9d99b * remove little unused code
* code cleanup
2010-09-18 23:16:05 +00:00

197 lines
4.2 KiB
C++

/***************************************************************************
* Copyright (C) 2010
* by Dimok
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any
* damages arising from the use of this software.
*
* Permission is granted to anyone to use this software for any
* purpose, including commercial applications, and to alter it and
* redistribute it freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you
* must not claim that you wrote the original software. If you use
* this software in a product, an acknowledgment in the product
* documentation would be appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and
* must not be misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source
* distribution.
*
* HTML_Stream Class
*
* for WiiXplorer 2010
***************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "HTML_Stream.h"
#include "networkops.h"
#include "http.h"
#define htmlstringcompare(text, cmp, pos) strncasecmp((const char*) &text[pos], (const char*) cmp, strlen((const char*) cmp))
HTML_Stream::HTML_Stream()
{
HTML_File = NULL;
position = 0;
filesize = 0;
}
HTML_Stream::HTML_Stream( const char * url )
{
HTML_File = NULL;
position = 0;
filesize = 0;
LoadLink( url );
}
HTML_Stream::~HTML_Stream()
{
if ( HTML_File )
free( HTML_File );
}
bool HTML_Stream::LoadLink( const char * url )
{
if ( !IsNetworkInit() )
return false;
struct block file = downloadfile( url );
if ( !file.data || !file.size )
return false;
if ( HTML_File )
free( HTML_File );
HTML_File = ( char * ) file.data;
filesize = file.size;
position = 0;
return true;
}
const char * HTML_Stream::FindStringStart( const char * string )
{
if ( !HTML_File )
return NULL;
while ( ( u32 ) position < filesize )
{
if ( htmlstringcompare( HTML_File, string, position ) == 0 )
break;
position++;
}
return &HTML_File[position];
}
const char * HTML_Stream::FindStringEnd( const char * string )
{
if ( !HTML_File )
return NULL;
while ( ( u32 ) position < filesize )
{
if ( htmlstringcompare( HTML_File, string, position ) == 0 )
break;
position++;
}
if ( ( u32 ) position >= filesize )
{
return NULL;
}
position += strlen( string );
return &HTML_File[position];
}
char * HTML_Stream::CopyString( const char * stopat )
{
if ( !stopat || !HTML_File )
return NULL;
u32 blocksize = 1024;
u32 counter = 0;
u32 allocatedsize = 0;
char * outtext = ( char* ) malloc( blocksize );
if ( !outtext )
return NULL;
allocatedsize = blocksize;
memset( outtext, 0, blocksize );
while ( ( htmlstringcompare( HTML_File, stopat, position ) != 0 ) && ( position + strlen( stopat ) < filesize ) )
{
if ( counter > blocksize )
{
blocksize += 1024;
char * tmpblock = ( char* ) realloc( outtext, blocksize );
if ( !tmpblock )
{
free( outtext );
outtext = NULL;
free( tmpblock );
return NULL;
}
outtext = tmpblock;
}
outtext[counter] = HTML_File[position];
position++;
counter++;
}
outtext[counter] = '\0';
outtext = ( char* ) realloc( outtext, counter + 1 );
return outtext;
}
int HTML_Stream::Seek( u32 pos, int origin )
{
if ( !HTML_File )
return -1;
switch ( origin )
{
case SEEK_SET:
position = pos;
break;
case SEEK_CUR:
position += pos;
break;
case SEEK_END:
position = filesize + pos;
break;
}
return 0;
}
void HTML_Stream::Rewind()
{
if ( !HTML_File )
return;
position = 0;
}
int HTML_Stream::GetPosition()
{
return position;
}