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[pcf] Streamline parsing of PCF encoding table.

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* src/pcf/pcfread.c (pcf_get_encodings): Use simpler double for-loop.
Reallocate array instead of using temporary storage.
This commit is contained in:
Alexei Podtelezhnikov 2013-02-01 20:24:00 -05:00
parent 3b1f206b04
commit 0eb6316fde
2 changed files with 28 additions and 30 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2013-02-01 Alexei Podtelezhnikov <apodtele@gmail.com>
[pcf] Streamline parsing of PCF encoding table.
* src/pcf/pcfread.c (pcf_get_encodings): Use simpler double for-loop.
Reallocate array instead of using temporary storage.
2013-02-01 Werner Lemberg <wl@gnu.org>
Fix Savannah bug #38227.

51
src/pcf/pcfread.c
View File

@ -2,7 +2,7 @@
FreeType font driver for pcf fonts
Copyright 2000-2010, 2012 by
Copyright 2000-2010, 2012, 2013 by
Francesco Zappa Nardelli
Permission is hereby granted, free of charge, to any person obtaining a copy
@ -771,8 +771,8 @@ THE SOFTWARE.
int firstCol, lastCol;
int firstRow, lastRow;
int nencoding, encodingOffset;
int i, j;
PCF_Encoding tmpEncoding = NULL, encoding = 0;
int i, j, k;
PCF_Encoding encoding = NULL;
error = pcf_seek_to_table_type( stream,
@ -819,56 +819,47 @@ THE SOFTWARE.
nencoding = ( lastCol - firstCol + 1 ) * ( lastRow - firstRow + 1 );
if ( FT_NEW_ARRAY( tmpEncoding, nencoding ) )
if ( FT_NEW_ARRAY( encoding, nencoding ) )
return PCF_Err_Out_Of_Memory;
error = FT_Stream_EnterFrame( stream, 2 * nencoding );
if ( error )
goto Bail;
for ( i = 0, j = 0 ; i < nencoding; i++ )
k = 0;
for ( i = firstRow; i <= lastRow; i++ )
{
if ( PCF_BYTE_ORDER( format ) == MSBFirst )
encodingOffset = FT_GET_SHORT();
else
encodingOffset = FT_GET_SHORT_LE();
if ( encodingOffset != -1 )
for ( j = firstCol; j <= lastCol; j++ )
{
tmpEncoding[j].enc = ( ( ( i / ( lastCol - firstCol + 1 ) ) +
firstRow ) * 256 ) +
( ( i % ( lastCol - firstCol + 1 ) ) +
firstCol );
if ( PCF_BYTE_ORDER( format ) == MSBFirst )
encodingOffset = FT_GET_SHORT();
else
encodingOffset = FT_GET_SHORT_LE();
tmpEncoding[j].glyph = (FT_Short)encodingOffset;
if ( encodingOffset != -1 )
{
encoding[k].enc = i * 256 + j;
encoding[k].glyph = (FT_Short)encodingOffset;
FT_TRACE5(( " code %d (0x%04X): idx %d\n",
tmpEncoding[j].enc, tmpEncoding[j].enc,
tmpEncoding[j].glyph ));
FT_TRACE5(( " code %d (0x%04X): idx %d\n",
encoding[k].enc, encoding[k].enc, encoding[k].glyph ));
j++;
k++;
}
}
}
FT_Stream_ExitFrame( stream );
if ( FT_NEW_ARRAY( encoding, j ) )
if ( FT_RENEW_ARRAY( encoding, nencoding, k ) )
goto Bail;
for ( i = 0; i < j; i++ )
{
encoding[i].enc = tmpEncoding[i].enc;
encoding[i].glyph = tmpEncoding[i].glyph;
}
face->nencodings = j;
face->nencodings = k;
face->encodings = encoding;
FT_FREE( tmpEncoding );
return error;
Bail:
FT_FREE( encoding );
FT_FREE( tmpEncoding );
return error;
}