kicad/new/sch_lpid.cpp

336 lines
7.5 KiB
C++

/*
* This program source code file is part of KICAD, a free EDA CAD application.
*
* Copyright (C) 2010 SoftPLC Corporation, Dick Hollenbeck <dick@softplc.com>
* Copyright (C) 2010 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 <cstring>
#include <wx/wx.h> // _()
#include <sch_lpid.h>
using namespace SCH;
static inline bool isDigit( char c )
{
return c >= '0' && c <= '9';
}
const char* EndsWithRev( const char* start, const char* tail, char separator )
{
bool sawDigit = false;
while( tail > start && isDigit( *--tail ) )
{
sawDigit = true;
}
// if sawDigit, tail points to the 'v' here.
if( sawDigit && tail-3 >= start )
{
tail -= 3;
if( tail[0]==separator && tail[1]=='r' && tail[2]=='e' && tail[3]=='v' )
{
return tail+1; // omit separator, return "revN[N..]"
}
}
return 0;
}
//----<Policy and field test functions>-------------------------------------
// These all return -1 on success, or >= 0 if there is an error at a
// particular character offset into their respective arguments. If >=0,
// then that return value gives the character offset of the error.
static inline int okLogical( const STRING& aField )
{
// std::string::npos is largest positive number, casting to int makes it -1.
// Returning that means success.
return int( aField.find_first_of( ":/" ) );
}
static inline int okBase( const STRING& aField )
{
int offset = int( aField.find_first_of( ":/" ) );
if( offset != -1 )
return offset;
// cannot be empty
if( !aField.size() )
return 0;
return offset; // ie. -1
}
static inline int okCategory( const STRING& aField )
{
return int( aField.find_first_of( ":/" ) );
}
static int okRevision( const STRING& aField )
{
char rev[32]; // C string for speed
if( aField.size() >= 4 && aField.size() <= sizeof(rev)-3 )
{
strcpy( rev, "x/" );
strcat( rev, aField.c_str() );
if( EndsWithRev( rev, rev + strlen(rev) ) == rev+2 )
return -1; // success
}
return 0; // first character position "is in error", is best we can do.
}
//----</Policy and field test functions>-------------------------------------
int LPID::Parse( const STRING& aLPID )
{
logical.clear();
category.clear();
baseName.clear();
partName.clear();
revision.clear();
const char* rev = EndsWithRev( aLPID );
size_t revNdx;
size_t partNdx;
size_t baseNdx;
int offset;
//=====<revision>=========================================
if( rev )
{
revNdx = rev - aLPID.c_str();
// no need to check revision, EndsWithRev did that.
revision = aLPID.substr( revNdx );
--revNdx; // back up to omit the '/' which preceeds the rev
}
else
revNdx = aLPID.size();
//=====<logical>==========================================
if( ( partNdx = aLPID.find( ':' ) ) != aLPID.npos )
{
offset = SetLogicalLib( aLPID.substr( 0, partNdx ) );
if( offset > -1 )
{
return offset;
}
++partNdx; // skip ':'
}
else
partNdx = 0;
//=====<rawName && category>==============================
// "length limited" search:
const char* base = (const char*) memchr( aLPID.c_str() + partNdx, '/', revNdx - partNdx );
if( base )
{
baseNdx = base - aLPID.c_str();
offset = SetCategory( aLPID.substr( partNdx, baseNdx - partNdx ) );
if( offset > -1 )
{
return offset + partNdx;
}
++baseNdx; // skip '/'
}
else
{
baseNdx = partNdx;
}
//=====<baseName>==========================================
offset = SetBaseName( aLPID.substr( baseNdx, revNdx - baseNdx ) );
if( offset > -1 )
{
return offset + baseNdx;
}
return -1;
}
LPID::LPID( const STRING& aLPID ) throw( PARSE_ERROR )
{
int offset = Parse( aLPID );
if( offset != -1 )
{
THROW_PARSE_ERROR(
_( "Illegal character found in LPID string" ),
wxConvertMB2WX( aLPID.c_str() ),
0,
offset
);
}
}
int LPID::SetLogicalLib( const STRING& aLogical )
{
int offset = okLogical( aLogical );
if( offset == -1 )
{
logical = aLogical;
}
return offset;
}
int LPID::SetCategory( const STRING& aCategory )
{
int offset = okCategory( aCategory );
if( offset == -1 )
{
category = aCategory;
// set the partName too
if( category.size() )
{
partName = category;
partName += '/';
partName += baseName;
}
else
partName = baseName;
}
return offset;
}
int LPID::SetBaseName( const STRING& aBaseName )
{
int offset = okBase( aBaseName );
if( offset == -1 )
{
baseName = aBaseName;
// set the partName too
if( category.size() )
{
partName = category;
partName += '/';
partName += baseName;
}
else
partName = baseName;
}
return offset;
}
int LPID::SetRevision( const STRING& aRevision )
{
int offset = okRevision( aRevision );
if( offset == -1 )
{
revision = aRevision;
}
return offset;
}
STRING LPID::Format() const
{
STRING ret;
if( logical.size() )
{
ret += logical;
ret += ':';
}
if( category.size() )
{
ret += category;
ret += '/';
}
ret += baseName;
if( revision.size() )
{
ret += '/';
ret += revision;
}
return ret;
}
#if 0 && defined(DEBUG)
// build this with Debug CMAKE_BUILD_TYPE
void LPID::Test()
{
static const char* lpids[] = {
"me:passives/R/rev0",
"passives/R/rev2",
":passives/R/rev3",
"C/rev22",
"passives/C22",
"R",
"me:R",
// most difficult:
"me:/R/rev0",
"me:R/rev0",
};
for( unsigned i=0; i<sizeof(lpids)/sizeof(lpids[0]); ++i )
{
// test some round tripping
LPID lpid( lpids[i] ); // parse
// format
printf( "input:'%s' full:'%s' base:'%s' partName:'%s' cat:'%s' rev:'%s'\n",
lpids[i],
lpid.Format().c_str(),
lpid.GetBaseName().c_str(),
lpid.GetPartName().c_str(),
lpid.GetCategory().c_str(),
lpid.GetRevision().c_str()
);
}
}
int main( int argc, char** argv )
{
LPID::Test();
return 0;
}
#endif