kicad/gerbview/rs274x.cpp

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/********************************************************/
/* Routine de lecture d'un fichier GERBER format RS274X */
/********************************************************/
#include "fctsys.h"
#include "common.h"
#include "confirm.h"
#include "macros.h"
#include "gerbview.h"
#include "pcbplot.h"
#include "protos.h"
#define CODE( x, y ) ( ( (x) << 8 ) + (y) )
enum RS274X_PARAMETERS {
FORMAT_STATEMENT = CODE( 'F', 'S' ),
AXIS_SELECT = CODE( 'A', 'S' ),
MIRROR_IMAGE = CODE( 'M', 'I' ),
MODE_OF_UNITS = CODE( 'M', 'O' ),
INCH = CODE( 'I', 'N' ),
MILLIMETER = CODE( 'M', 'M' ),
OFFSET = CODE( 'O', 'F' ),
SCALE_FACTOR = CODE( 'S', 'F' ),
IMAGE_NAME = CODE( 'I', 'N' ),
IMAGE_JUSTIFY = CODE( 'I', 'J' ),
IMAGE_OFFSET = CODE( 'I', 'O' ),
IMAGE_POLARITY = CODE( 'I', 'P' ),
IMAGE_ROTATION = CODE( 'I', 'R' ),
PLOTTER_FILM = CODE( 'P', 'M' ),
INCLUDE_FILE = CODE( 'I', 'F' ),
AP_DEFINITION = CODE( 'A', 'D' ),
AP_MACRO = CODE( 'A', 'M' ),
LAYER_NAME = CODE( 'L', 'N' ),
LAYER_POLARITY = CODE( 'L', 'P' ),
KNOCKOUT = CODE( 'K', 'O' ),
STEP_AND_REPEAT = CODE( 'S', 'P' ),
ROTATE = CODE( 'R', 'O' )
};
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/* Local Functions */
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/**
* Function ReadXCommand
* reads in two bytes of data and assembles them into an int with the first
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* byte in the sequence put into the most significant part of a 16 bit value
* and the second byte put into the least significant part of the 16 bit value.
* @param text A reference to a pointer to read bytes from and to advance as
* they are read.
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* @return int - with 16 bits of data in the ls bits, upper bits zeroed.
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*/
static int ReadXCommand( char*& text )
{
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int result;
if( text && *text )
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result = *text++ << 8;
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else
return -1;
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if( text && *text )
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result += *text++;
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else
return -1;
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return result;
}
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/**
* Function ReadInt
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* reads an int from an ASCII character buffer. If there is a comma after the
* int, then skip over that.
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* @param text A reference to a character pointer from which bytes are read
* and the pointer is advanced for each byte read.
* @param int - The int read in.
*/
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static int ReadInt( char*& text )
{
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int ret = (int) strtol( text, &text, 10 );
if( *text == ',' || isspace( *text ) )
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++text;
return ret;
}
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/**
* Function ReadDouble
* reads a double from an ASCII character buffer. If there is a comma after
* the double, then skip over that.
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* @param text A reference to a character pointer from which the ASCII double
* is read from and the pointer advanced for each character read.
* @return double
*/
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static double ReadDouble( char*& text )
{
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double ret = strtod( text, &text );
if( *text == ',' || isspace( *text ) )
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++text;
return ret;
}
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/****************************************************************************/
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bool GERBER::ReadRS274XCommand( WinEDA_GerberFrame* frame, wxDC* DC,
char buff[GERBER_BUFZ], char*& text )
{
/****************************************************************************/
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bool ok = true;
int code_command;
text++;
for( ; ; )
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{
while( *text )
{
switch( *text )
{
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case '%': // end of command
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text++;
m_CommandState = CMD_IDLE;
goto exit; // success completion
case ' ':
case '\r':
case '\n':
text++;
break;
case '*':
text++;
break;
default:
code_command = ReadXCommand( text );
ok = ExecuteRS274XCommand( code_command, buff, text );
if( !ok )
goto exit;
break;
}
}
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// end of current line, read another one.
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if( fgets( buff, GERBER_BUFZ, m_Current_File ) == NULL )
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{
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// end of file
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ok = false;
break;
}
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text = buff;
}
exit:
return ok;
}
/*******************************************************************************/
bool GERBER::ExecuteRS274XCommand( int command,
char buff[GERBER_BUFZ],
char*& text )
{
/*******************************************************************************/
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int code;
int xy_seq_len, xy_seq_char;
bool ok = TRUE;
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char line[GERBER_BUFZ];
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wxString msg;
double fcoord;
double conv_scale = m_GerbMetric ? PCB_INTERNAL_UNIT /
25.4 : PCB_INTERNAL_UNIT;
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D( printf( "%22s: Command <%c%c>\n", __func__, (command >> 8) & 0xFF,
command & 0xFF ); )
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switch( command )
{
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case FORMAT_STATEMENT:
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xy_seq_len = 2;
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while( *text != '*' )
{
switch( *text )
{
case ' ':
text++;
break;
case 'L': // No Leading 0
m_NoTrailingZeros = FALSE;
text++;
break;
case 'T': // No trailing 0
m_NoTrailingZeros = TRUE;
text++;
break;
case 'A': // Absolute coord
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m_Relative = FALSE;
text++;
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break;
case 'I': // Absolute coord
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m_Relative = TRUE;
text++;
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break;
case 'N': // Sequence code (followed by the number of digits for the X,Y command
text++;
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xy_seq_char = *text++;
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if( (xy_seq_char >= '0') && (xy_seq_char <= '9') )
xy_seq_len = -'0';
break;
case 'X':
case 'Y': // Valeurs transmises :2 (really xy_seq_len : FIX ME) digits
{
code = *(text++);
char ctmp = *(text++) - '0';
if( code == 'X' )
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{
m_FmtScale.x = *text - '0'; // = nb chiffres apres la virgule
m_FmtLen.x = ctmp + m_FmtScale.x; // = nb total de chiffres
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}
else
{
m_FmtScale.y = *text - '0';
m_FmtLen.y = ctmp + m_FmtScale.y;
}
text++;
}
break;
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case '*':
break;
default:
GetEndOfBlock( buff, text, m_Current_File );
ok = FALSE;
break;
}
}
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break;
case AXIS_SELECT:
case MIRROR_IMAGE:
ok = FALSE;
break;
case MODE_OF_UNITS:
code = ReadXCommand( text );
if( code == INCH )
m_GerbMetric = FALSE;
else if( code == MILLIMETER )
m_GerbMetric = TRUE;
conv_scale = m_GerbMetric ? PCB_INTERNAL_UNIT /
25.4 : PCB_INTERNAL_UNIT;
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break;
case OFFSET: // command: OFAnnBnn (nn = float number)
m_Offset.x = m_Offset.y = 0;
while( *text != '*' )
{
switch( *text )
{
case 'A': // A axis offset in current unit (inch ou mm)
text++;
fcoord = ReadDouble( text );
m_Offset.x = wxRound( fcoord * conv_scale );
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break;
case 'B': // B axis offset in current unit (inch ou mm)
text++;
fcoord = ReadDouble( text );
m_Offset.y = wxRound( fcoord * conv_scale );
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break;
}
}
break;
case SCALE_FACTOR:
case IMAGE_JUSTIFY:
case IMAGE_ROTATION:
case IMAGE_OFFSET:
case PLOTTER_FILM:
case LAYER_NAME:
case KNOCKOUT:
case STEP_AND_REPEAT:
case ROTATE:
msg.Printf( _( "Command <%c%c> ignored by Gerbview" ),
(command >> 8) & 0xFF, command & 0xFF );
if( g_DebugLevel > 0 )
wxMessageBox( msg );
break;
case IMAGE_NAME:
m_Name.Empty();
while( *text != '*' )
{
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m_Name.Append( *text++ );
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}
break;
case IMAGE_POLARITY:
if( strnicmp( text, "NEG", 3 ) == 0 )
m_ImageNegative = true;
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else
m_ImageNegative = false;
D( printf( "%22s: IMAGE_POLARITY m_ImageNegative=%s\n", __func__,
m_ImageNegative ? "true" : "false" ); )
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break;
case LAYER_POLARITY:
if( *text == 'C' )
m_LayerNegative = true;
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else
m_LayerNegative = false;
D( printf( "%22s: LAYER_POLARITY m_LayerNegative=%s\n", __func__,
m_LayerNegative ? "true" : "false" ); )
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break;
case INCLUDE_FILE:
if( m_FilesPtr >= 10 )
{
ok = FALSE;
DisplayError( NULL, _( "Too many include files!!" ) );
break;
}
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strcpy( line, text );
strtok( line, "*%%\n\r" );
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m_FilesList[m_FilesPtr] = m_Current_File;
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m_Current_File = fopen( line, "rt" );
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if( m_Current_File == 0 )
{
wxString msg;
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msg.Printf( wxT( "fichier <%s> non trouve" ), line );
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DisplayError( NULL, msg, 10 );
ok = FALSE;
m_Current_File = m_FilesList[m_FilesPtr];
break;
}
m_FilesPtr++;
break;
case AP_MACRO:
ok = ReadApertureMacro( buff, text, m_Current_File );
if( !ok )
break;
break;
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case AP_DEFINITION:
// input example: %ADD30R,0.081800X0.101500*%
// at this point, text points to 2nd 'D'
if( *text++ != 'D' )
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{
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ok = FALSE;
break;
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}
m_Has_DCode = TRUE;
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code = ReadInt( text );
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D_CODE* dcode;
dcode = GetDCODE( code );
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if( dcode == NULL )
break;
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// at this point, text points to character after the ADD<num>,
// i.e. R in example above. If text[0] is one of the usual
// apertures: (C,R,O,P), there is a comma after it.
if( text[1] == ',' )
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{
char stdAperture = *text;
text += 2; // skip "C," for example
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dcode->m_Size.x = dcode->m_Size.y =
wxRound( ReadDouble( text ) * conv_scale );
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switch( stdAperture )
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{
case 'C': // Circle
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dcode->m_Shape = APT_CIRCLE;
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while( *text == ' ' )
text++;
if( *text == 'X' )
{
text++;
dcode->m_Drill.x = dcode->m_Drill.y =
wxRound( ReadDouble( text ) * conv_scale );
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dcode->m_DrillShape = 1;
}
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while( *text == ' ' )
text++;
if( *text == 'X' )
{
text++;
dcode->m_Drill.y =
wxRound( ReadDouble( text ) * conv_scale );
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dcode->m_DrillShape = 2;
}
dcode->m_Defined = TRUE;
break;
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case 'O': // oval
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case 'R': // rect
dcode->m_Shape = (stdAperture == 'O') ? APT_OVAL : APT_RECT;
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while( *text == ' ' )
text++;
if( *text == 'X' )
{
text++;
dcode->m_Size.y =
wxRound( ReadDouble( text ) * conv_scale );
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}
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while( *text == ' ' )
text++;
if( *text == 'X' )
{
text++;
dcode->m_Drill.x = dcode->m_Drill.y =
wxRound( ReadDouble( text ) * conv_scale );
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dcode->m_DrillShape = 1;
}
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while( *text == ' ' )
text++;
if( *text == 'Y' )
{
text++;
dcode->m_Drill.y =
wxRound( ReadDouble( text ) * conv_scale );
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dcode->m_DrillShape = 2;
}
dcode->m_Defined = TRUE;
break;
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case 'P': // Polygon
dcode->m_Shape = APT_POLYGON;
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dcode->m_Defined = TRUE;
break;
}
}
else // text[0] starts an aperture macro name
{
APERTURE_MACRO am_lookup;
while( *text && *text != '*' && *text != ',' )
am_lookup.name.Append( *text++ );
if( *text && *text == ',' )
{
while( *text && *text != '*' )
{
double param = ReadDouble( text );
if( *text == 'X' || isspace( *text ) )
++text;
dcode->AppendParam( param );
}
}
// lookup the aperture macro here.
APERTURE_MACRO* pam = FindApertureMacro( am_lookup );
if( !pam )
{
// @todo not found, don't know how to report an error
D( printf( "aperture macro %s not found\n",
CONV_TO_UTF8( am_lookup.name ) ); )
ok = false;
break;
}
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dcode->m_Shape = APT_MACRO;
dcode->SetMacro( (APERTURE_MACRO*) pam );
}
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break;
default:
ok = FALSE;
break;
}
ok = GetEndOfBlock( buff, text, m_Current_File );
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return ok;
}
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/*****************************************************************/
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bool GetEndOfBlock( char buff[GERBER_BUFZ], char*& text, FILE* gerber_file )
{
/*****************************************************************/
for( ; ; )
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{
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while( (text < buff + GERBER_BUFZ) && *text )
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{
if( *text == '*' )
return TRUE;
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if( *text == '%' )
return TRUE;
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text++;
}
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if( fgets( buff, GERBER_BUFZ, gerber_file ) == NULL )
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break;
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text = buff;
}
return FALSE;
}
/*******************************************************************/
bool GERBER::ReadApertureMacro( char buff[GERBER_BUFZ],
char*& text,
FILE* gerber_file )
{
/*******************************************************************/
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APERTURE_MACRO am;
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// read macro name
while( *text )
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{
if( *text == '*' )
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{
++text;
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break;
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}
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am.name.Append( *text++ );
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}
if( g_DebugLevel > 0 )
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wxMessageBox( am.name, wxT( "macro name" ) );
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for( ; ; )
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{
AM_PRIMITIVE prim;
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if( *text == '*' )
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++text;
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if( *text == '\n' )
++text;
if( !*text )
{
text = buff;
if( fgets( buff, GERBER_BUFZ, gerber_file ) == NULL )
return false;
}
if( *text == '%' )
break; // exit with text still pointing at %
prim.primitive_id = (AM_PRIMITIVE_ID) ReadInt( text );
int paramCount;
switch( prim.primitive_id )
{
case AMP_CIRCLE:
paramCount = 4;
break;
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case AMP_LINE2:
case AMP_LINE20:
paramCount = 7;
break;
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case AMP_LINE_CENTER:
case AMP_LINE_LOWER_LEFT:
paramCount = 6;
break;
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case AMP_EOF:
paramCount = 0;
break;
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case AMP_OUTLINE:
paramCount = 4;
break;
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case AMP_POLYGON:
paramCount = 4;
break;
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case AMP_MOIRE:
paramCount = 9;
break;
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case AMP_THERMAL:
paramCount = 6;
break;
default:
// @todo, there needs to be a way of reporting the line number
// and character offset.
D( printf( "Invalid primitive id code %d\n", prim.primitive_id ); )
return false;
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}
int i;
for( i = 0; i < paramCount && *text && *text != '*'; ++i )
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{
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prim.params.push_back( DCODE_PARAM() );
DCODE_PARAM& param = prim.params.back();
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if( *text == '$' )
{
++text;
param.SetIndex( ReadInt( text ) );
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}
else
param.SetValue( ReadDouble( text ) );
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}
if( i < paramCount ) // maybe some day we can throw an exception and track a line number
printf( "i=%d, insufficient parameters\n", i );
// there are more parameters to read if this is an AMP_OUTLINE
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if( prim.primitive_id == AMP_OUTLINE )
{
// params[1] is a count of polygon points, so it must be given
// in advance, i.e. be immediate.
wxASSERT( prim.params[1].IsImmediate() );
paramCount = (int) prim.params[1].GetValue( 0 ) * 2 + 1;
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for( int i = 0; i < paramCount && *text && *text != '*'; ++i )
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{
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prim.params.push_back( DCODE_PARAM() );
DCODE_PARAM& param = prim.params.back();
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if( *text == '$' )
{
++text;
param.SetIndex( ReadInt( text ) );
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}
else
param.SetValue( ReadDouble( text ) );
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}
}
am.primitives.push_back( prim );
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}
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m_aperture_macros.insert( am );
return true;
}