C 2 HTML Source
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C 2 HTML - c2html.cpp
<source lang="c"> // To prevent browse information warnings with Microsoft compiler
- pragma warning( disable : 4786 )
- include <iostream>
- include <fstream>
- include <string>
- include "keywords.h"
- include "symbols.h"
void write_html_char( ofstream& stream, const unsigned char character );
void main( int argc, char *argv[] ) {
using namespace std;
// Get the name of the input source file
string source_filename;
if( argc != 2 )
{
cout << "C to HTML converter.\nEnter source file name: ";
cin >> source_filename;
}
else
{
source_filename = argv[1];
}
// Create a name for the output html file const int last_dot = source_filename.find_last_of( '.' ); string html_filename = source_filename.substr( 0, last_dot ) + ".html";
cout << "Converting '" << source_filename << "' to '" << html_filename
<< "'" << endl;
// Open the source and html file streams ifstream source_ifs( source_filename.c_str() ); ofstream html_ofs( html_filename.c_str() );
if( !source_ifs.is_open() )
{
cout << "Failed to open source file '" << source_filename << "'" << endl;
return;
}
if( !html_ofs.is_open() )
{
cout << "Failed to open html file '" << source_filename << "'" << endl;
return;
}
KEYWORDS keywords; SYMBOLS symbols;
html_ofs << "<HTML>\n"; html_ofs << "<HEAD><LINK href=\"code.css\" rel=stylesheet type=\"text/css\"></HEAD>\n"; html_ofs << "<BODY>\n";
// Copy strings from the input file to the output file
while( !source_ifs.eof() )
{
string word;
bool star_found;
// Get the next character from the file
unsigned char character = source_ifs.get();
switch( character )
{
case '\n':
html_ofs << "
\n";
break;
case '"':
// Start string - read until next quote
html_ofs << "";
do
{
write_html_char( html_ofs, character );
character = source_ifs.get();
if( character == '\\' )
{
// Control character - ignore the next character
write_html_char( html_ofs, character );
character = source_ifs.get();
write_html_char( html_ofs, character );
character = source_ifs.get();
}
}
while( character != '"' && !source_ifs.eof() );
write_html_char( html_ofs, character );
html_ofs << "";
break;
case '#':
// Start directive - read until space
html_ofs << "";
write_html_char( html_ofs, character );
source_ifs >> word;
html_ofs << word;
html_ofs << "";
break;
case '/':
// May start comment
character = source_ifs.get();
switch( character )
{
case '/':
// Line comment - read to end of line
html_ofs << "";
write_html_char( html_ofs, '/' );
while( character != '\n' && !source_ifs.eof() )
{
write_html_char( html_ofs, character );
character = source_ifs.get();
}
html_ofs << "";
html_ofs << "
\n";
break;
case '*':
// Limited comment - read until '*/'
html_ofs << "";
write_html_char( html_ofs, '/' );
write_html_char( html_ofs, '*' );
character = source_ifs.get();
star_found = character == '*';
while( !(star_found && character == '/') && !source_ifs.eof() )
{
write_html_char( html_ofs, character );
character = source_ifs.get();
if( character == '*' )
{
star_found = true;
}
}
write_html_char( html_ofs, '/' );
html_ofs << "";
break;
default:
write_html_char( html_ofs, '/' );
write_html_char( html_ofs, character );
break;
}
break;
default:
// If the character is not a symbol read the rest of the word
if( !symbols.is( character ) )
{
// Read in characters up to the next symbol to make a word
string word;
while( !symbols.is( character ) && !source_ifs.eof() )
{
word += character;
character = source_ifs.get();
}
// Write out the word
if( keywords.is( word ) )
{
html_ofs << "";
html_ofs << word;
html_ofs << "";
}
else
{
html_ofs << word;
}
}
write_html_char( html_ofs, character );
break;
}
}
html_ofs << "</BODY>\n"; html_ofs << "</HTML>\n";
cout << "Done!" << endl;
}
void write_html_char( ofstream& stream, const unsigned char character ) {
switch( character )
{
case '\n':
stream << "
\n";
break;
case '\t':
stream << " ";
break;
case '"':
stream << """;
break;
case ' ':
stream << " ";
break;
case '&':
stream << "&";
break;
case '<':
stream << "<";
break;
case '>':
stream << ">";
break;
case 255:
break;
default:
stream.put( character );
break;
}
} </source>
C 2 HTML - keywords.h
<source lang="c">
- include <string>
- include <vector>
using namespace std;
class KEYWORDS { public:
// Default constructor populates keywords list KEYWORDS();
// Function to test if given word is in list
bool is( const string& word,
int first = 0,
int last = wordlist.size()-1 ) const;
private:
// Private member containing word list static vector<string> wordlist;
};
vector<string> KEYWORDS::wordlist;
inline KEYWORDS::KEYWORDS() {
// Sorted list of keywords wordlist.push_back( "and" ); // c++ wordlist.push_back( "and_eq" ); // c++ wordlist.push_back( "asm" ); wordlist.push_back( "auto" ); wordlist.push_back( "bitand" ); // c++ wordlist.push_back( "bitor" ); // c++ wordlist.push_back( "bool" ); // c++ wordlist.push_back( "break" ); wordlist.push_back( "case" ); wordlist.push_back( "catch" ); // c++ wordlist.push_back( "char" ); wordlist.push_back( "class" ); wordlist.push_back( "compl" ); // c++ wordlist.push_back( "const" ); wordlist.push_back( "const_cast" ); // c++ wordlist.push_back( "continue" ); wordlist.push_back( "default" ); wordlist.push_back( "delete" ); wordlist.push_back( "do" ); wordlist.push_back( "double" ); wordlist.push_back( "dynamic_cast" ); // c++ wordlist.push_back( "else" ); wordlist.push_back( "enum" ); wordlist.push_back( "explicit" ); // c++ wordlist.push_back( "extern" ); wordlist.push_back( "false" ); // c++ wordlist.push_back( "float" ); wordlist.push_back( "for" ); wordlist.push_back( "friend" ); wordlist.push_back( "goto" ); wordlist.push_back( "if" ); wordlist.push_back( "inline" ); wordlist.push_back( "int" ); wordlist.push_back( "long" ); wordlist.push_back( "mutable" ); // c++ wordlist.push_back( "namespace" ); // c++ wordlist.push_back( "new" ); wordlist.push_back( "not" ); // c++ wordlist.push_back( "not_eq" ); // c++ wordlist.push_back( "operator" ); wordlist.push_back( "or" ); // c++ wordlist.push_back( "or_eq" ); // c++ wordlist.push_back( "private" ); wordlist.push_back( "protected" ); wordlist.push_back( "public" ); wordlist.push_back( "register" ); wordlist.push_back( "reinterpret_cast" ); // c++ wordlist.push_back( "return" ); wordlist.push_back( "short" ); wordlist.push_back( "signed" ); wordlist.push_back( "sizeof" ); wordlist.push_back( "static" ); wordlist.push_back( "static_cast" ); // c++ wordlist.push_back( "struct" ); wordlist.push_back( "switch" ); wordlist.push_back( "template" ); wordlist.push_back( "this" ); wordlist.push_back( "throw" ); // c++ wordlist.push_back( "true" ); // c++ wordlist.push_back( "try" ); // c++ wordlist.push_back( "typedef" ); wordlist.push_back( "typeid" ); // c++ wordlist.push_back( "typename" ); // c++ wordlist.push_back( "union" ); wordlist.push_back( "unsigned" ); wordlist.push_back( "using" ); // c++ wordlist.push_back( "virtual" ); wordlist.push_back( "void" ); wordlist.push_back( "volatile" ); wordlist.push_back( "wchar_t" ); // c++ wordlist.push_back( "while" ); wordlist.push_back( "xor" ); // c++ wordlist.push_back( "xor_eq" ); // c++
}
inline bool KEYWORDS::is( const string& word, int first, int last ) const {
if( first >= last )
return word == wordlist[ first ];
// Binary search - split the list in two and search the appropriate half
int centre = first + (last - first) / 2;
if( word < wordlist[ centre ] )
{
return is( word, first, centre - 1 );
}
if( word > wordlist[ centre ] )
{
return is( word, centre + 1, last );
}
return true;
} </source>
C 2 HTML - symbols.h
<source lang="c"> const int NUMBER_OF_ASCII_CHARACTERS = 255;
class SYMBOLS { public:
// Default constructor identifies characters that are symbols SYMBOLS();
// Function to test if given character is a symbol bool is( const unsigned char character ) const;
private:
// Private member containing true or false for all characters bool symbols[NUMBER_OF_ASCII_CHARACTERS];
};
inline SYMBOLS::SYMBOLS() {
// Start with all characters not being a symbol
for( int c = 0; c < NUMBER_OF_ASCII_CHARACTERS; c++ )
{
symbols[c] = false;
}
// Set characters that are symbols to true symbols['\n'] = true; symbols['\t'] = true; symbols['"'] = true; symbols[' '] = true;
symbols[';'] = true;
symbols[':'] = true;
symbols['('] = true;
symbols[')'] = true;
symbols['['] = true;
symbols[']'] = true;
symbols['.'] = true;
symbols['!'] = true;
symbols['~'] = true;
symbols['-'] = true;
symbols['+'] = true;
symbols['&'] = true;
symbols['*'] = true;
symbols['/'] = true;
symbols['%'] = true;
symbols['<'] = true;
symbols['>'] = true;
symbols['^'] = true;
symbols['|'] = true;
symbols['?'] = true;
symbols['='] = true;
symbols[','] = true;
}
inline bool SYMBOLS::is( const unsigned char character ) const {
return symbols[ character ];
} </source>