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kicad/common/gbr_metadata.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2019 Jean-Pierre Charras, jp.charras at wanadoo.fr
* Copyright (C) 2019 KiCad Developers, see AUTHORS.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
*/
/**
* @file gbr_metadata.cpp
* @brief helper functions to handle the gerber metadata in files,
* related to the netlist info and aperture attribute.
*/
#include <fctsys.h>
#include <gbr_metadata.h>
wxString GbrMakeCreationDateAttributeString( GBR_NC_STRING_FORMAT aFormat )
{
// creates the CreationDate attribute:
// The attribute value must conform to the full version of the ISO 8601
// date and time format, including time and time zone. Note that this is
// the date the Gerber file was effectively created,
// not the time the project of PCB was started
wxDateTime date( wxDateTime::GetTimeNow() );
// Date format: see http://www.cplusplus.com/reference/ctime/strftime
wxString timezone_offset; // ISO 8601 offset from UTC in timezone
timezone_offset = date.Format( "%z" ); // Extract the time zone offset
// The time zone offset format is +mm or +hhmm (or -mm or -hhmm)
// (mm = number of minutes, hh = number of hours. 1h00mn is returned as +0100)
// we want +(or -) hh:mm
if( timezone_offset.Len() > 3 ) // format +hhmm or -hhmm found
// Add separator between hours and minutes
timezone_offset.insert( 3, ":", 1 );
wxString msg;
switch( aFormat )
{
case GBR_NC_STRING_FORMAT_X2:
msg.Printf( "%%TF.CreationDate,%s%s*%%", date.FormatISOCombined(), timezone_offset );
break;
case GBR_NC_STRING_FORMAT_X1:
msg.Printf( "G04 #@! TF.CreationDate,%s%s*", date.FormatISOCombined(), timezone_offset );
break;
case GBR_NC_STRING_FORMAT_GBRJOB:
msg.Printf( "\"CreationDate\": \"%s%s\"", date.FormatISOCombined(), timezone_offset );
break;
case GBR_NC_STRING_FORMAT_NCDRILL:
msg.Printf( "; #@! TF.CreationDate,%s%s", date.FormatISOCombined(), timezone_offset );
break;
}
return msg;
}
wxString GbrMakeProjectGUIDfromString( wxString& aText )
{
/* Gerber GUID format should be RFC4122 Version 1 or 4.
* See en.wikipedia.org/wiki/Universally_unique_identifier
* The format is:
* xxxxxxxx-xxxx-Mxxx-Nxxx-xxxxxxxxxxxx
* with
* x = hexDigit lower/upper case
* and
* M = '1' or '4' (UUID version: 1 (basic) or 4 (random)) (we use 4: UUID random)
* and
* N = '8' or '9' or 'A|a' or 'B|b' : UUID variant 1: 2 MSB bits have meaning) (we use N = 9)
* N = 1000 or 1001 or 1010 or 1011 : 10xx means Variant 1 (Variant2: 110x and 111x are reserved)
*/
wxString guid;
// Build a 32 digits GUID from the board name:
// guid has 32 digits, so add chars in name to be sure we can build a 32 digits guid
// (i.e. from a 16 char string name)
// In fact only 30 digits are used, and 2 UID id
wxString bname = aText;
int cnt = 16 - bname.Len();
if( cnt > 0 )
bname.Append( 'X', cnt );
int chr_idx = 0;
// Output the 8 first hex digits:
for( unsigned ii = 0; ii < 4; ii++ )
{
int cc = int( bname[chr_idx++] ) & 0xFF;
guid << wxString::Format( "%2.2x", cc );
}
// Output the 4 next hex digits:
guid << '-';
for( unsigned ii = 0; ii < 2; ii++ )
{
int cc = int( bname[chr_idx++] ) & 0xFF;
guid << wxString::Format( "%2.2x", cc );
}
// Output the 4 next hex digits (UUID version and 3 digits):
guid << "-4"; // first digit: UUID version 4 (M = 4)
{
int cc = int( bname[chr_idx++] ) << 4 & 0xFF0;
cc += int( bname[chr_idx] ) >> 4 & 0x0F;
guid << wxString::Format( "%3.3x", cc );
}
// Output the 4 next hex digits (UUID variant and 3 digits):
guid << "-9"; // first digit: UUID variant 1 (N = 9)
{
int cc = (int( bname[chr_idx++] ) & 0x0F) << 8;
cc += int( bname[chr_idx++] ) & 0xFF;
guid << wxString::Format( "%3.3x", cc );
}
// Output the 12 last hex digits:
guid << '-';
for( unsigned ii = 0; ii < 6; ii++ )
{
int cc = int( bname[chr_idx++] ) & 0xFF;
guid << wxString::Format( "%2.2x", cc );
}
return guid;
}
std::string GBR_APERTURE_METADATA::FormatAttribute( GBR_APERTURE_ATTRIB aAttribute,
bool aUseX1StructuredComment )
{
std::string attribute_string; // the specific aperture attribute (TA.xxx)
std::string comment_string; // a optional G04 comment line to write before the TA. line
// generate a string to print a Gerber Aperture attribute
switch( aAttribute )
{
case GBR_APERTURE_ATTRIB_END: // Dummy value (aAttribute must be < GBR_APERTURE_ATTRIB_END)
case GBR_APERTURE_ATTRIB_NONE: // idle command: do nothing
break;
case GBR_APERTURE_ATTRIB_ETCHEDCMP: // print info associated to an item
// which connects 2 different nets
// (Net tees, microwave component)
attribute_string = "TA.AperFunction,EtchedComponent";
break;
case GBR_APERTURE_ATTRIB_CONDUCTOR: // print info associated to a track
attribute_string = "TA.AperFunction,Conductor";
break;
case GBR_APERTURE_ATTRIB_EDGECUT: // print info associated to a board outline (edge.cut layer)
attribute_string = "TA.AperFunction,Profile";
break;
case GBR_APERTURE_ATTRIB_VIAPAD: // print info associated to a flashed via
attribute_string = "TA.AperFunction,ViaPad";
break;
case GBR_APERTURE_ATTRIB_NONCONDUCTOR: // print info associated to a item on a copper layer
// which is not a track (for instance a text)
attribute_string = "TA.AperFunction,NonConductor";
break;
case GBR_APERTURE_ATTRIB_COMPONENTPAD: // print info associated to a flashed
// through hole component on outer layer
attribute_string = "TA.AperFunction,ComponentPad";
break;
case GBR_APERTURE_ATTRIB_SMDPAD_SMDEF: // print info associated to a flashed for SMD pad.
// with solder mask defined from the copper shape
// Excluded BGA pads which have their own type
attribute_string = "TA.AperFunction,SMDPad,SMDef";
break;
case GBR_APERTURE_ATTRIB_SMDPAD_CUDEF: // print info associated to a flashed SMD pad with
// a solder mask defined by the solder mask
attribute_string = "TA.AperFunction,SMDPad,CuDef";
break;
case GBR_APERTURE_ATTRIB_BGAPAD_SMDEF: // print info associated to flashed BGA pads with
// a solder mask defined by the copper shape
attribute_string = "TA.AperFunction,BGAPad,SMDef";
break;
case GBR_APERTURE_ATTRIB_BGAPAD_CUDEF: // print info associated to a flashed BGA pad with
// a solder mask defined by the solder mask
attribute_string = "TA.AperFunction,BGAPad,CuDef";
break;
case GBR_APERTURE_ATTRIB_CONNECTORPAD: // print info associated to a flashed edge connector pad (outer layers)
attribute_string = "TA.AperFunction,ConnectorPad";
break;
case GBR_APERTURE_ATTRIB_WASHERPAD: // print info associated to flashed mechanical pads (NPTH)
attribute_string = "TA.AperFunction,WasherPad";
break;
case GBR_APERTURE_ATTRIB_HEATSINKPAD: // print info associated to a flashed heat sink pad
// (typically for SMDs)
attribute_string = "TA.AperFunction,HeatsinkPad";
break;
case GBR_APERTURE_ATTRIB_VIADRILL: // print info associated to a via hole in drill files
attribute_string = "TA.AperFunction,ViaDrill";
break;
case GBR_APERTURE_ATTRIB_COMPONENTDRILL: // print info associated to a component
// round pad hole in drill files
attribute_string = "TA.AperFunction,ComponentDrill";
break;
// print info associated to a component oblong pad hole in drill files
// Same as a round pad hole, but is a specific aperture in drill file and
// a G04 comment is added to the aperture function
case GBR_APERTURE_ATTRIB_COMPONENTOBLONGDRILL:
comment_string = "aperture for slot hole";
attribute_string = "TA.AperFunction,ComponentDrill";
break;
}
std::string full_attribute_string;
wxString eol_string;
if( !attribute_string.empty() )
{
if( !comment_string.empty() )
{
full_attribute_string = "G04 " + comment_string + "*\n";
}
if( aUseX1StructuredComment )
{
full_attribute_string += "G04 #@! ";
eol_string = "*\n";
}
else
{
full_attribute_string += "%";
eol_string = "*%\n";
}
}
full_attribute_string += attribute_string + eol_string;
return full_attribute_string;
}
// Helper function to convert a ascii hex char to its integer value
// If the char is not a hexa char, return -1
int char2Hex( unsigned aCode )
{
if( aCode >= '0' && aCode <= '9' )
return aCode - '0';
if( aCode >= 'A' && aCode <= 'F' )
return aCode - 'A' + 10;
if( aCode >= 'a' && aCode <= 'f' )
return aCode - 'a' + 10;
return -1;
}
wxString FormatStringFromGerber( const wxString& aString )
{
// make the inverse conversion of formatStringToGerber()
// It converts a "normalized" gerber string and convert it to a 16 bits sequence unicode
// and return a wxString (unicode 16) from the gerber string
// Note the initial gerber string can already contain unicode chars.
wxString txt;
unsigned count = aString.Length();
for( unsigned ii = 0; ii < count; ++ii )
{
unsigned code = aString[ii];
if( code == '\\' && ii < count-5 && aString[ii+1] == 'u' )
{
// Note the latest Gerber X2 spec (2019 06) uses \uXXXX to encode
// the unicode XXXX hexadecimal value
// If 4 chars next to 'u' are hexadecimal chars,
// convert these 4 hexadecimal digits to a 16 bit unicode
// (Gerber allows only 4 hexadecimal digits)
// If an error occurs, the escape sequence is not translated,
// and used "as this"
long value = 0;
bool error = false;
for( int jj = 0; jj < 4; jj++ )
{
value <<= 4;
code = aString[ii+jj+2];
int hexa = char2Hex( code );
if( hexa >= 0 )
value += hexa;
else
{
error = true;
break;
}
}
if( !error )
{
if( value >= ' ' ) // Is a valid wxChar ?
txt.Append( wxChar( value ) );
ii += 5;
}
else
{
txt.Append( aString[ii] );
continue;
}
}
else
txt.Append( aString[ii] );
}
return txt;
}
std::string formatStringToGerber( const wxString& aString )
{
/* format string means convert any code > 0x7F and unautorized code to a hexadecimal
* 16 bits sequence unicode
* unautorized codes are ',' '*' '%' '\'
*/
std::string txt;
txt.reserve( aString.Length() );
for( unsigned ii = 0; ii < aString.Length(); ++ii )
{
unsigned code = aString[ii];
bool convert = false;
switch( code )
{
case '\\':
case '%':
case '*':
case ',':
convert = true;
break;
default:
break;
}
if( convert || code > 0x7F )
{
// Convert code to 4 hexadecimal digit
// (Gerber allows only 4 hexadecimal digit)
char hexa[32];
sprintf( hexa,"\\u%4.4X", code & 0xFFFF);
txt += hexa;
}
else
txt += char( code );
}
return txt;
}
// Netname and Pan num fields cannot be empty in Gerber files
// Normalized names must be used, if any
#define NO_NET_NAME wxT( "N/C" ) // net name of not connected pads (one pad net) (normalized)
#define NO_PAD_NAME wxT( "" ) // pad name of pads without pad name/number (not normalized)
bool FormatNetAttribute( std::string& aPrintedText, std::string& aLastNetAttributes,
GBR_NETLIST_METADATA* aData, bool& aClearPreviousAttributes,
bool aUseX1StructuredComment )
{
aClearPreviousAttributes = false;
wxString prepend_string;
wxString eol_string;
if( aUseX1StructuredComment )
{
prepend_string = "G04 #@! ";
eol_string = "*\n";
}
else
{
prepend_string = "%";
eol_string = "*%\n";
}
// print a Gerber net attribute record.
// it is added to the object attributes dictionnary
// On file, only modified or new attributes are printed.
if( aData == NULL )
return false;
std::string pad_attribute_string;
std::string net_attribute_string;
std::string cmp_attribute_string;
if( aData->m_NetAttribType == GBR_NETLIST_METADATA::GBR_NETINFO_UNSPECIFIED )
return false; // idle command: do nothing
if( ( aData->m_NetAttribType & GBR_NETLIST_METADATA::GBR_NETINFO_PAD ) )
{
// print info associated to a flashed pad (cmpref, pad name)
// example: %TO.P,R5,3*%
pad_attribute_string = prepend_string + "TO.P,";
pad_attribute_string += formatStringToGerber( aData->m_Cmpref ) + ",";
if( aData->m_Padname.IsEmpty() )
// Happens for "mechanical" or never connected pads
pad_attribute_string += formatStringToGerber( NO_PAD_NAME );
else
pad_attribute_string += formatStringToGerber( aData->m_Padname );
pad_attribute_string += eol_string;
}
if( ( aData->m_NetAttribType & GBR_NETLIST_METADATA::GBR_NETINFO_NET ) )
{
// print info associated to a net
// example: %TO.N,Clk3*%
net_attribute_string = prepend_string + "TO.N,";
if( aData->m_Netname.IsEmpty() )
{
if( aData->m_NotInNet )
{
// Happens for not connectable pads: mechanical pads
// and pads with no padname/num
// In this case the net name must be left empty
}
else
{
// Happens for not connected pads: use a normalized
// dummy name
net_attribute_string += formatStringToGerber( NO_NET_NAME );
}
}
else
net_attribute_string += formatStringToGerber( aData->m_Netname );
net_attribute_string += eol_string;
}
if( ( aData->m_NetAttribType & GBR_NETLIST_METADATA::GBR_NETINFO_CMP ) &&
!( aData->m_NetAttribType & GBR_NETLIST_METADATA::GBR_NETINFO_PAD ) )
{
// print info associated to a footprint
// example: %TO.C,R2*%
// Because GBR_NETINFO_PAD option already contains this info, it is not
// created here for a GBR_NETINFO_PAD attribute
cmp_attribute_string = prepend_string + "TO.C,";
cmp_attribute_string += formatStringToGerber( aData->m_Cmpref ) + eol_string;
}
// the full list of requested attributes:
std::string full_attribute_string = pad_attribute_string + net_attribute_string
+ cmp_attribute_string;
// the short list of requested attributes
// (only modified or new attributes are stored here):
std::string short_attribute_string;
if( aLastNetAttributes != full_attribute_string )
{
// first, remove no more existing attributes.
// Because in Kicad the full attribute list is evaluated for each object,
// the entire dictionnary is cleared
bool clearDict = false;
if( aLastNetAttributes.find( "TO.P," ) != std::string::npos )
{
if( pad_attribute_string.empty() ) // No more this attribute
clearDict = true;
else if( aLastNetAttributes.find( pad_attribute_string )
== std::string::npos ) // This attribute has changed
short_attribute_string += pad_attribute_string;
}
else // New attribute
short_attribute_string += pad_attribute_string;
if( aLastNetAttributes.find( "TO.N," ) != std::string::npos )
{
if( net_attribute_string.empty() ) // No more this attribute
clearDict = true;
else if( aLastNetAttributes.find( net_attribute_string )
== std::string::npos ) // This attribute has changed
short_attribute_string += net_attribute_string;
}
else // New attribute
short_attribute_string += net_attribute_string;
if( aLastNetAttributes.find( "TO.C," ) != std::string::npos )
{
if( cmp_attribute_string.empty() ) // No more this attribute
clearDict = true;
else if( aLastNetAttributes.find( cmp_attribute_string )
== std::string::npos ) // This attribute has changed
short_attribute_string += cmp_attribute_string;
}
else // New attribute
short_attribute_string += cmp_attribute_string;
aClearPreviousAttributes = clearDict;
aLastNetAttributes = full_attribute_string;
if( clearDict )
aPrintedText = full_attribute_string;
else
aPrintedText = short_attribute_string;
}
return true;
}
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