/
XS.xs
519 lines (481 loc) · 19.8 KB
/
XS.xs
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#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
typedef PerlIO * InputStream;
#define S_TXT 0
#define S_CHK_B 1
#define S_WAIT_LTR 2
#define S_END 3
#define WRAP 80
#define TABSTOP 8
static void
store( image, x, y, c, attr, is_truecolor, rgb_f, rgb_b, wrap, width, height, pal )
SV *image;
int *x;
int *y;
unsigned char c;
int attr;
int is_truecolor;
int *rgb_f;
int *rgb_b;
int wrap;
int *width;
int *height;
AV *pal;
{
HV *pixel = newHV();
hv_store( pixel, "char", 4, newSVpvn( &c, 1 ), 0 );
if( is_truecolor == 1 ) {
AV *rgb = newAV();
av_push( rgb, newSViv( rgb_f[ 0 ] ) );
av_push( rgb, newSViv( rgb_f[ 1 ] ) );
av_push( rgb, newSViv( rgb_f[ 2 ] ) );
av_push( pal, newRV_noinc((SV *) rgb ) );
hv_store( pixel, "fg", 2, newSViv( av_len( pal ) ), 0 );
rgb = newAV();
av_push( rgb, newSViv( rgb_b[ 0 ] ) );
av_push( rgb, newSViv( rgb_b[ 1 ] ) );
av_push( rgb, newSViv( rgb_b[ 2 ] ) );
av_push( pal, newRV_noinc((SV *) rgb ) );
hv_store( pixel, "bg", 2, newSViv( av_len( pal ) ), 0 );
}
else {
hv_store( pixel, "attr", 4, newSViv( attr ), 0 );
}
AV *rows = (AV *) SvRV( *hv_fetch( (HV *) SvRV( image ), "pixeldata", 9, 0 ) );
int newrow = 1;
AV *row = newAV();
SV **elem_p = av_fetch( rows, *y, FALSE );
if( elem_p ) {
row = (AV *) SvRV( *elem_p );
newrow = 0;
}
av_store( row, *x, newRV_noinc((SV *) pixel ) );
if( newrow ) {
av_store( rows, *y, newRV_noinc((SV *) row) );
}
if( *x + 1 > *width ){
*width = *x + 1;
}
if( *y + 1 > *height ){
*height = *y + 1;
}
(*x)++;
if( *x == wrap ) {
*x = 0; (*y)++;
}
}
static void
set_attrs( attr, args, pal, rgb_f, rgb_b ) // set the current attribute byte
int *attr;
AV *args;
AV *pal;
int *rgb_f;
int *rgb_b;
{
int i;
int arg;
int oldfg;
int oldbg;
AV *c;
for( i = 0; i <= av_len( args ); i++ ) {
arg = SvIV(* av_fetch( args, i, 0 ) );
if ( arg == 0 ) {
*attr = 7;
c = (AV *) SvRV( *av_fetch( pal, 7, 0 ) );
rgb_f[ 0 ] = SvIV(* av_fetch( c, 0, 0 ) );
rgb_f[ 1 ] = SvIV(* av_fetch( c, 1, 0 ) );
rgb_f[ 2 ] = SvIV(* av_fetch( c, 2, 0 ) );
c = (AV *) SvRV( *av_fetch( pal, 0, 0 ) );
rgb_b[ 0 ] = SvIV(* av_fetch( c, 0, 0 ) );
rgb_b[ 1 ] = SvIV(* av_fetch( c, 1, 0 ) );
rgb_b[ 2 ] = SvIV(* av_fetch( c, 2, 0 ) );
}
else if ( arg == 1 ) {
*attr |= 8;
c = (AV *) SvRV( *av_fetch( pal, *attr & 15, 0 ) );
rgb_f[ 0 ] = SvIV(* av_fetch( c, 0, 0 ) );
rgb_f[ 1 ] = SvIV(* av_fetch( c, 1, 0 ) );
rgb_f[ 2 ] = SvIV(* av_fetch( c, 2, 0 ) );
}
else if ( arg == 2 || arg == 22 ) {
*attr &= 247;
c = (AV *) SvRV( *av_fetch( pal, *attr & 15, 0 ) );
rgb_f[ 0 ] = SvIV(* av_fetch( c, 0, 0 ) );
rgb_f[ 1 ] = SvIV(* av_fetch( c, 1, 0 ) );
rgb_f[ 2 ] = SvIV(* av_fetch( c, 2, 0 ) );
}
else if ( arg == 5 ) {
*attr |= 128;
c = (AV *) SvRV( *av_fetch( pal, ( *attr & 240 ) >> 4, 0 ) );
rgb_b[ 0 ] = SvIV(* av_fetch( c, 0, 0 ) );
rgb_b[ 1 ] = SvIV(* av_fetch( c, 1, 0 ) );
rgb_b[ 2 ] = SvIV(* av_fetch( c, 2, 0 ) );
}
else if ( arg == 7 || arg == 27 ) {
oldfg = *attr & 15;
oldbg = ( *attr & 240 ) >> 4;
*attr = oldbg | ( oldfg << 4 );
c = (AV *) SvRV( *av_fetch( pal, *attr & 15, 0 ) );
rgb_f[ 0 ] = SvIV(* av_fetch( c, 0, 0 ) );
rgb_f[ 1 ] = SvIV(* av_fetch( c, 1, 0 ) );
rgb_f[ 2 ] = SvIV(* av_fetch( c, 2, 0 ) );
c = (AV *) SvRV( *av_fetch( pal, ( *attr & 240 ) >> 4, 0 ) );
rgb_b[ 0 ] = SvIV(* av_fetch( c, 0, 0 ) );
rgb_b[ 1 ] = SvIV(* av_fetch( c, 1, 0 ) );
rgb_b[ 2 ] = SvIV(* av_fetch( c, 2, 0 ) );
}
else if ( arg == 25 ) {
*attr &= 127;
c = (AV *) SvRV( *av_fetch( pal, ( *attr & 240 ) >> 4, 0 ) );
rgb_b[ 0 ] = SvIV(* av_fetch( c, 0, 0 ) );
rgb_b[ 1 ] = SvIV(* av_fetch( c, 1, 0 ) );
rgb_b[ 2 ] = SvIV(* av_fetch( c, 2, 0 ) );
}
else if ( arg >= 30 && arg <= 37 ) {
*attr &= 248;
*attr |= ( arg - 30 );
c = (AV *) SvRV( *av_fetch( pal, *attr & 15, 0 ) );
rgb_f[ 0 ] = SvIV(* av_fetch( c, 0, 0 ) );
rgb_f[ 1 ] = SvIV(* av_fetch( c, 1, 0 ) );
rgb_f[ 2 ] = SvIV(* av_fetch( c, 2, 0 ) );
}
else if ( arg >= 40 && arg <= 47 ) {
*attr &= 143;
*attr |= ( ( arg - 40 ) << 4 );
c = (AV *) SvRV( *av_fetch( pal, ( *attr & 240 ) >> 4, 0 ) );
rgb_b[ 0 ] = SvIV(* av_fetch( c, 0, 0 ) );
rgb_b[ 1 ] = SvIV(* av_fetch( c, 1, 0 ) );
rgb_b[ 2 ] = SvIV(* av_fetch( c, 2, 0 ) );
}
}
}
MODULE = Image::TextMode::Reader::ANSI::XS PACKAGE = Image::TextMode::Reader::ANSI::XS
PROTOTYPES: DISABLE
SV *
_read( self, image, file, options )
SV *self
SV *image
InputStream file
HV *options
PREINIT:
unsigned char c;
int state = S_TXT;
unsigned char argbuf[ 255 ];
int arg_index = 0;
int x = 0;
int y = 0;
int save_x = 0;
int save_y = 0;
int attr = 7;
int wrap = WRAP;
int width = 0;
int height = 0;
int filesize = 0;
int is_truecolor = 0;
int rgb_f[3];
int rgb_b[3];
AV *args = newAV();
CODE:
int i;
int count;
char *feature;
SV **temp_pv;
sv_2mortal( (SV * ) args );
// render options hashref
HV *render_opts = (HV *) SvRV( *hv_fetch( (HV *) SvRV( image ), "render_options", 14, 0 ) );
// palette
AV *pal = (AV *) SvRV( *hv_fetch( (HV *) SvRV( *hv_fetch( (HV *) SvRV( image ), "palette", 7, 0 ) ), "colors", 6, 0 ) );
// get options
if( hv_exists( options, "width", 5 ) ) {
wrap = SvIV(* hv_fetch( options, "width", 5, 0 ) );
}
if( !wrap ) {
wrap = WRAP;
}
// blink mode
SV *saucerec = *hv_fetch( (HV *) SvRV( image ), "sauce", 5, 0 );
if( hv_exists( (HV *) SvRV( saucerec ), "has_sauce", 9 ) ) {
SV *has_sauce = *hv_fetch( (HV *) SvRV( saucerec ), "has_sauce", 9, 0 );
if( SvOK( has_sauce ) && SvTRUE( has_sauce ) ) {
int flags = SvIV( *hv_fetch( (HV *) SvRV( saucerec ), "flags_id", 8, 0 ) );
hv_store( render_opts, "blink_mode", 10, newSViv( 0 ), (flags & 1) ^ 1 );
}
}
filesize = SvIV(* hv_fetch( options, "filesize", 8, 0 ) );
PerlIO_rewind( file );
while ( state != S_END && ( c = PerlIO_getc( file ) ) != -1 && !PerlIO_eof( file ) && PerlIO_tell( file ) <= filesize ) {
switch ( state ) {
case S_TXT : // parse text
switch( c ) {
case '\x1a' : state = S_END; break;
case '\x1b' : state = S_CHK_B; break;
case '\n' :
x = 0; y++;
case '\r' : break;
case '\t' :
count = ( x + 1 ) % TABSTOP;
if( count ) {
count = TABSTOP - count;
for ( i = 0; i < count; i++ ) {
store( image, &x, &y, ' ', attr, is_truecolor, &rgb_f, &rgb_b, wrap, &width, &height, pal );
}
}
break;
default :
store( image, &x, &y, c, attr, is_truecolor, &rgb_f, &rgb_b, wrap, &width, &height, pal );
break;
}
break;
case S_CHK_B : // check for a left square bracket
if( c != '[' ) {
store( image, &x, &y, '\x1b', attr, is_truecolor, &rgb_f, &rgb_b, wrap, &width, &height, pal );
store( image, &x, &y, c, attr, is_truecolor, &rgb_f, &rgb_b, wrap, &width, &height, pal );
state = S_TXT;
}
else {
state = S_WAIT_LTR;
}
break;
case S_WAIT_LTR : // wait for a letter to exec. a command
if ( isALPHA( c ) || c == ';' ) {
argbuf[arg_index] = 0;
av_push( args, newSVpv( argbuf, 0 ) );
arg_index = 0;
if( c == ';' )
break;
}
if ( isALPHA( c ) ) {
switch( c ) {
case 'm' : // set attributes
set_attrs( &attr, args, pal, rgb_f, rgb_b );
break;
case 'H' : // set position
case 'f' :
temp_pv = av_fetch( args, 0, TRUE );
y = looks_like_number( *temp_pv ) ? SvIV( *temp_pv ) : 1;
temp_pv = av_fetch( args, 1, TRUE );
x = looks_like_number( *temp_pv ) ? SvIV( *temp_pv ) : 1;
y--;
x--;
if( y < 0 ) y = 0;
if( x < 0 ) x = 0;
break;
case 'A' : // move up
temp_pv = av_fetch( args, 0, TRUE );
i = looks_like_number( *temp_pv ) ? SvIV( *temp_pv ) : 1;
y -= i;
if( y < 0 ) y = 0;
break;
case 'B' : // move down
temp_pv = av_fetch( args, 0, TRUE );
i = looks_like_number( *temp_pv ) ? SvIV( *temp_pv ) : 1;
y += i;
break;
case 'C' : // move right
temp_pv = av_fetch( args, 0, TRUE );
i = looks_like_number( *temp_pv ) ? SvIV( *temp_pv ) : 1;
x += i;
break;
case 'D' : // move left
temp_pv = av_fetch( args, 0, TRUE );
i = looks_like_number( *temp_pv ) ? SvIV( *temp_pv ) : 1;
x -= i;
if( x < 0 ) x = 0;
break;
case 'E' : // next line
temp_pv = av_fetch( args, 0, TRUE );
i = looks_like_number( *temp_pv ) ? SvIV( *temp_pv ) : 1;
x = 0;
y += i;
break;
case 'F' : // previous line
temp_pv = av_fetch( args, 0, TRUE );
i = looks_like_number( *temp_pv ) ? SvIV( *temp_pv ) : 1;
x = 0;
y -= i;
if( y < 0 ) y = 0;
break;
case 'G' : // horizontal move
temp_pv = av_fetch( args, 0, TRUE );
i = looks_like_number( *temp_pv ) ? SvIV( *temp_pv ) : 1;
x = i - 1;
break;
case 'h' : // feature on
feature = av_len( args ) < 0 ? "" : SvPV_nolen(* av_fetch( args, 0, 0 ) );
if( strcmp( feature, "?33" ) == 0 ) {
hv_store( render_opts, "blink_mode", 10, newSViv( 0 ), 0 );
}
break;
case 'l' : // feature off
feature = av_len( args ) < 0 ? "" : SvPV_nolen(* av_fetch( args, 0, 0 ) );
if( strcmp( feature, "?33" ) == 0 ) {
hv_store( render_opts, "blink_mode", 10, newSViv( 1 ), 0 );
}
break;
case 's' : // save position
save_x = x; save_y = y;
break;
case 't' : // rgb palette set
hv_store( render_opts, "truecolor", 9, newSViv( 1 ), 0 );
is_truecolor = 1;
i = SvIV(* av_fetch( args, 0, TRUE ) );
if( i == 0 ) {
rgb_b[ 0 ] = SvIV(* av_fetch( args, 1, TRUE ) );
rgb_b[ 1 ] = SvIV(* av_fetch( args, 2, TRUE ) );
rgb_b[ 2 ] = SvIV(* av_fetch( args, 3, TRUE ) );
}
else {
rgb_f[ 0 ] = SvIV(* av_fetch( args, 1, TRUE ) );
rgb_f[ 1 ] = SvIV(* av_fetch( args, 2, TRUE ) );
rgb_f[ 2 ] = SvIV(* av_fetch( args, 3, TRUE ) );
}
break;
case 'u' : // restore position
x = save_x; y = save_y;
break;
case 'J' : // clear screen
temp_pv = av_fetch( args, 0, TRUE );
i = looks_like_number( *temp_pv ) ? SvIV( *temp_pv ) : 0;
if( !i ) {
int row;
int next = y + 1;
for( row = 1; row <= height - next + 1; row++ ) {
ENTER;
SAVETMPS;
PUSHMARK( SP );
XPUSHs( image );
XPUSHs( sv_2mortal( newSViv( next ) ) );
PUTBACK;
call_method( "delete_line", G_DISCARD | G_VOID );
SPAGAIN;
FREETMPS;
LEAVE;
height--;
}
ENTER;
SAVETMPS;
PUSHMARK( SP );
XPUSHs( image );
XPUSHs( sv_2mortal( newSViv( y ) ) );
AV *cols = newAV();
av_store( cols, 0, newSViv( x ) );
av_store( cols, 1, newSViv( -1 ) );
XPUSHs( sv_2mortal( newRV_noinc((SV *) cols) ) );
PUTBACK;
call_method( "clear_line", G_DISCARD | G_VOID );
SPAGAIN;
FREETMPS;
LEAVE;
}
else if( i == 1 ) {
int row;
for( row = 0; row < y; row++ ) {
ENTER;
SAVETMPS;
PUSHMARK( SP );
XPUSHs( image );
XPUSHs( sv_2mortal( newSViv( row ) ) );
PUTBACK;
call_method( "clear_line", G_DISCARD | G_VOID );
SPAGAIN;
FREETMPS;
LEAVE;
}
ENTER;
SAVETMPS;
PUSHMARK( SP );
XPUSHs( image );
XPUSHs( sv_2mortal( newSViv( y ) ) );
AV *cols = newAV();
av_store( cols, 0, newSViv( 0 ) );
av_store( cols, 1, newSViv( x ) );
XPUSHs( sv_2mortal( newRV_noinc((SV *) cols) ) );
PUTBACK;
call_method( "clear_line", G_DISCARD | G_VOID );
SPAGAIN;
FREETMPS;
LEAVE;
}
else if( i == 2 ) {
ENTER;
SAVETMPS;
PUSHMARK( SP );
XPUSHs( image );
PUTBACK;
call_method( "clear_screen", G_DISCARD | G_VOID );
SPAGAIN;
FREETMPS;
LEAVE;
width = 0;
height = 0;
x = 0;
y = 0;
}
break;
case 'K' : // clear line
temp_pv = av_fetch( args, 0, TRUE );
i = looks_like_number( *temp_pv ) ? SvIV( *temp_pv ) : 0;
ENTER;
SAVETMPS;
PUSHMARK( SP );
XPUSHs( image );
XPUSHs( sv_2mortal( newSViv( y ) ) );
if( !i ) {
AV *cols = newAV();
av_store( cols, 0, newSViv( x ) );
av_store( cols, 1, newSViv( -1 ) );
XPUSHs( sv_2mortal( newRV_noinc((SV *) cols) ) );
}
else if( i == 1 ) {
AV *cols = newAV();
av_store( cols, 0, newSViv( 0 ) );
av_store( cols, 1, newSViv( x ) );
XPUSHs( sv_2mortal( newRV_noinc((SV *) cols) ) );
}
else if( i == 2 ) { // no additional args
}
PUTBACK;
call_method( "clear_line", G_DISCARD | G_VOID );
SPAGAIN;
FREETMPS;
LEAVE;
break;
default:
break;
}
av_clear( args );
state = S_TXT;
break;
}
argbuf[ arg_index ] = c;
arg_index++;
break;
case S_END : // done parsing
default : break;
}
}
// set width + height of the image
ENTER;
SAVETMPS;
PUSHMARK( SP );
XPUSHs( image );
XPUSHs( sv_2mortal( newSViv( width ) ) );
PUTBACK;
call_method( "width", G_DISCARD | G_VOID );
SPAGAIN;
FREETMPS;
LEAVE;
ENTER;
SAVETMPS;
PUSHMARK( SP );
XPUSHs( image );
XPUSHs( sv_2mortal( newSViv( height ) ) );
PUTBACK;
call_method( "height", G_DISCARD | G_VOID );
SPAGAIN;
FREETMPS;
LEAVE;
RETVAL = SvREFCNT_inc( image );
OUTPUT:
RETVAL