122 lines
3.4 KiB
C++
122 lines
3.4 KiB
C++
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/*
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Copyright (c) 2006-2009 by Jakob Schroeter <js@camaya.net>
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This file is part of the gloox library. http://camaya.net/gloox
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This software is distributed under a license. The full license
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agreement can be found in the file LICENSE in this distribution.
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This software may not be copied, modified, sold or distributed
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other than expressed in the named license agreement.
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This software is distributed without any warranty.
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*/
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#include "util.h"
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#include "gloox.h"
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namespace gloox
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{
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namespace util
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{
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int internalLog2( unsigned int n )
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{
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int pos = 0;
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if ( n >= 1<<16 ) { n >>= 16; pos += 16; }
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if ( n >= 1<< 8 ) { n >>= 8; pos += 8; }
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if ( n >= 1<< 4 ) { n >>= 4; pos += 4; }
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if ( n >= 1<< 2 ) { n >>= 2; pos += 2; }
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if ( n >= 1<< 1 ) { pos += 1; }
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return ( (n == 0) ? (-1) : pos );
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}
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unsigned _lookup( const std::string& str, const char* values[], unsigned size, int def )
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{
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unsigned i = 0;
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for( ; i < size && str != values[i]; ++i )
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;
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return ( i == size && def >= 0 ) ? (unsigned)def : i;
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}
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const std::string _lookup( unsigned code, const char* values[], unsigned size, const std::string& def )
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{
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return code < size ? std::string( values[code] ) : def;
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}
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unsigned _lookup2( const std::string& str, const char* values[],
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unsigned size, int def )
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{
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return 1 << _lookup( str, values, size, def <= 0 ? def : (int)internalLog2( def ) );
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}
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const std::string _lookup2( unsigned code, const char* values[], unsigned size, const std::string& def )
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{
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const unsigned i = (unsigned)internalLog2( code );
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return i < size ? std::string( values[i] ) : def;
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}
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static const char escape_chars[] = { '&', '<', '>', '\'', '"' };
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static const std::string escape_seqs[] = { "amp;", "lt;", "gt;", "apos;", "quot;" };
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static const unsigned escape_size = 5;
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const std::string escape( std::string what )
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{
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for( size_t val, i = 0; i < what.length(); ++i )
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{
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for( val = 0; val < escape_size; ++val )
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{
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if( what[i] == escape_chars[val] )
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{
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what[i] = '&';
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what.insert( i+1, escape_seqs[val] );
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i += escape_seqs[val].length();
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break;
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}
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}
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}
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return what;
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}
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bool checkValidXMLChars( const std::string& data )
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{
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if( data.empty() )
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return true;
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std::string::const_iterator it = data.begin();
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for( ; it != data.end()
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&& ( (unsigned char)(*it) == 0x09
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|| (unsigned char)(*it) == 0x0a
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|| (unsigned char)(*it) == 0x0d
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|| ( (unsigned char)(*it) >= 0x20
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&& (unsigned char)(*it) != 0xc0
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&& (unsigned char)(*it) != 0xc1
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&& (unsigned char)(*it) < 0xf5 ) ); ++it )
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;
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return ( it == data.end() );
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}
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void replaceAll( std::string& target, const std::string& find, const std::string& replace )
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{
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std::string::size_type findSize = find.size();
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std::string::size_type replaceSize = replace.size();
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if( findSize == 0 )
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return;
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std::string::size_type index = target.find( find, 0 );
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while( index != std::string::npos )
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{
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target.replace( index, findSize, replace );
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index = target.find( find, index+replaceSize );
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}
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}
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}
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}
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