kicad/common/richio.cpp

237 lines
5.7 KiB
C++

/*
* This program source code file is part of KICAD, a free EDA CAD application.
*
* Copyright (C) 2007-2010 SoftPLC Corporation, Dick Hollenbeck <dick@softplc.com>
* Copyright (C) 2007 Kicad Developers, see change_log.txt for contributors.
*
* 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 2
* 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, you may find one here:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* or you may search the http://www.gnu.org website for the version 2 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <cstdarg>
#include "richio.h"
// This file defines 3 classes useful for working with DSN text files and is named
// "richio" after its author, Richard Hollenbeck, aka Dick Hollenbeck.
//-----<LINE_READER>------------------------------------------------------
LINE_READER::LINE_READER( unsigned aMaxLineLength )
{
lineNum = 0;
maxLineLength = aMaxLineLength;
// the real capacity is 10 bytes larger than requested.
capacity = aMaxLineLength + 10;
line = new char[capacity];
line[0] = '\0';
length = 0;
}
FILE_LINE_READER::FILE_LINE_READER( FILE* aFile, unsigned aMaxLineLength ) :
LINE_READER( aMaxLineLength )
{
fp = aFile;
}
int FILE_LINE_READER::ReadLine() throw (IOError)
{
const char* p = fgets( line, capacity, fp );
if( !p )
{
line[0] = 0;
length = 0;
}
else
{
length = strlen( line );
if( length > maxLineLength )
throw IOError( _("Line length exceeded") );
++lineNum;
}
return length;
}
int STRING_LINE_READER::ReadLine() throw (IOError)
{
size_t nlOffset = source.find( '\n', ndx );
size_t advance;
if( nlOffset == std::string::npos )
advance = source.length() - ndx;
else
advance = nlOffset - ndx + 1; // include the newline, so +1
if( advance )
{
if( advance > maxLineLength )
throw IOError( _("Line length exceeded") );
wxASSERT( ndx + advance <= source.length() );
memcpy( line, &source[ndx], advance );
++lineNum;
ndx += advance;
}
length = advance;
line[advance] = 0;
return advance;
}
//-----<OUTPUTFORMATTER>----------------------------------------------------
// factor out a common GetQuoteChar
const char* OUTPUTFORMATTER::GetQuoteChar( const char* wrapee, const char* quote_char )
{
// Include '#' so a symbol is not confused with a comment. We intend
// to wrap any symbol starting with a '#'.
// Our LEXER class handles comments, and comments appear to be an extension
// to the SPECCTRA DSN specification.
if( *wrapee == '#' )
return quote_char;
if( strlen(wrapee)==0 )
return quote_char;
bool isFirst = true;
for( ; *wrapee; ++wrapee, isFirst=false )
{
static const char quoteThese[] = "\t ()"
"%" // per Alfons of freerouting.net, he does not like this unquoted as of 1-Feb-2008
"{}" // guessing that these are problems too
;
// if the string to be wrapped (wrapee) has a delimiter in it,
// return the quote_char so caller wraps the wrapee.
if( strchr( quoteThese, *wrapee ) )
return quote_char;
if( !isFirst && '-' == *wrapee )
return quote_char;
}
return ""; // caller does not need to wrap, can use an unwrapped string.
}
//-----<STRINGFORMATTER>----------------------------------------------------
const char* STRINGFORMATTER::GetQuoteChar( const char* wrapee )
{
// for what we are using STRINGFORMATTER for at this time, we can return
// the nul string always.
return "";
// return OUTPUTFORMATTER::GetQuoteChar( const char* wrapee, "\"" );
}
int STRINGFORMATTER::vprint( const char* fmt, va_list ap )
{
int ret = vsnprintf( &buffer[0], buffer.size(), fmt, ap );
if( ret >= (int) buffer.size() )
{
buffer.reserve( ret+200 );
ret = vsnprintf( &buffer[0], buffer.size(), fmt, ap );
}
if( ret > 0 )
mystring.append( (const char*) &buffer[0] );
return ret;
}
int STRINGFORMATTER::sprint( const char* fmt, ... )
{
va_list args;
va_start( args, fmt );
int ret = vprint( fmt, args);
va_end( args );
return ret;
}
int STRINGFORMATTER::Print( int nestLevel, const char* fmt, ... ) throw( IOError )
{
#define NESTWIDTH 2 ///< how many spaces per nestLevel
va_list args;
va_start( args, fmt );
int result = 0;
int total = 0;
for( int i=0; i<nestLevel; ++i )
{
result = sprint( "%*c", NESTWIDTH, ' ' );
if( result < 0 )
break;
total += result;
}
if( result<0 || (result=vprint( fmt, args ))<0 )
{
throw IOError( _("Error writing to STRINGFORMATTER") );
}
va_end( args );
total += result;
return total;
}
void STRINGFORMATTER::StripUseless()
{
std::string copy = mystring;
mystring.clear();
for( std::string::iterator i=copy.begin(); i!=copy.end(); ++i )
{
if( !isspace( *i ) && *i!=')' && *i!='(' && *i!='"' )
{
mystring += *i;
}
}
}