diff options
Diffstat (limited to 'src/pcf/pcfread.c')
| -rw-r--r-- | src/pcf/pcfread.c | 1267 |
1 files changed, 0 insertions, 1267 deletions
diff --git a/src/pcf/pcfread.c b/src/pcf/pcfread.c deleted file mode 100644 index b9123cf..0000000 --- a/src/pcf/pcfread.c +++ /dev/null @@ -1,1267 +0,0 @@ -/* pcfread.c - - FreeType font driver for pcf fonts - - Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 by - Francesco Zappa Nardelli - -Permission is hereby granted, free of charge, to any person obtaining a copy -of this software and associated documentation files (the "Software"), to deal -in the Software without restriction, including without limitation the rights -to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -copies of the Software, and to permit persons to whom the Software is -furnished to do so, subject to the following conditions: - -The above copyright notice and this permission notice shall be included in -all copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -THE SOFTWARE. -*/ - - -#include <ft2build.h> - -#include FT_INTERNAL_DEBUG_H -#include FT_INTERNAL_STREAM_H -#include FT_INTERNAL_OBJECTS_H - -#include "pcf.h" -#include "pcfdrivr.h" -#include "pcfread.h" - -#include "pcferror.h" - - - /*************************************************************************/ - /* */ - /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ - /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ - /* messages during execution. */ - /* */ -#undef FT_COMPONENT -#define FT_COMPONENT trace_pcfread - - -#if defined( FT_DEBUG_LEVEL_TRACE ) - static const char* const tableNames[] = - { - "prop", "accl", "mtrcs", "bmps", "imtrcs", - "enc", "swidth", "names", "accel" - }; -#endif - - - static - const FT_Frame_Field pcf_toc_header[] = - { -#undef FT_STRUCTURE -#define FT_STRUCTURE PCF_TocRec - - FT_FRAME_START( 8 ), - FT_FRAME_ULONG_LE( version ), - FT_FRAME_ULONG_LE( count ), - FT_FRAME_END - }; - - - static - const FT_Frame_Field pcf_table_header[] = - { -#undef FT_STRUCTURE -#define FT_STRUCTURE PCF_TableRec - - FT_FRAME_START( 16 ), - FT_FRAME_ULONG_LE( type ), - FT_FRAME_ULONG_LE( format ), - FT_FRAME_ULONG_LE( size ), - FT_FRAME_ULONG_LE( offset ), - FT_FRAME_END - }; - - - static FT_Error - pcf_read_TOC( FT_Stream stream, - PCF_Face face ) - { - FT_Error error; - PCF_Toc toc = &face->toc; - PCF_Table tables; - - FT_Memory memory = FT_FACE(face)->memory; - FT_UInt n; - - - if ( FT_STREAM_SEEK ( 0 ) || - FT_STREAM_READ_FIELDS ( pcf_toc_header, toc ) ) - return PCF_Err_Cannot_Open_Resource; - - if ( toc->version != PCF_FILE_VERSION || - toc->count > FT_ARRAY_MAX( face->toc.tables ) || - toc->count == 0 ) - return PCF_Err_Invalid_File_Format; - - if ( FT_NEW_ARRAY( face->toc.tables, toc->count ) ) - return PCF_Err_Out_Of_Memory; - - tables = face->toc.tables; - for ( n = 0; n < toc->count; n++ ) - { - if ( FT_STREAM_READ_FIELDS( pcf_table_header, tables ) ) - goto Exit; - tables++; - } - - /* Sort tables and check for overlaps. Because they are almost */ - /* always ordered already, an in-place bubble sort with simultaneous */ - /* boundary checking seems appropriate. */ - tables = face->toc.tables; - - for ( n = 0; n < toc->count - 1; n++ ) - { - FT_UInt i, have_change; - - - have_change = 0; - - for ( i = 0; i < toc->count - 1 - n; i++ ) - { - PCF_TableRec tmp; - - - if ( tables[i].offset > tables[i + 1].offset ) - { - tmp = tables[i]; - tables[i] = tables[i + 1]; - tables[i + 1] = tmp; - - have_change = 1; - } - - if ( ( tables[i].size > tables[i + 1].offset ) || - ( tables[i].offset > tables[i + 1].offset - tables[i].size ) ) - return PCF_Err_Invalid_Offset; - } - - if ( !have_change ) - break; - } - -#if defined( FT_DEBUG_LEVEL_TRACE ) - - { - FT_UInt i, j; - const char* name = "?"; - - - FT_TRACE4(( "pcf_read_TOC:\n" )); - - FT_TRACE4(( " number of tables: %ld\n", face->toc.count )); - - tables = face->toc.tables; - for ( i = 0; i < toc->count; i++ ) - { - for ( j = 0; j < sizeof ( tableNames ) / sizeof ( tableNames[0] ); - j++ ) - if ( tables[i].type == (FT_UInt)( 1 << j ) ) - name = tableNames[j]; - - FT_TRACE4(( " %d: type=%s, format=0x%X, " - "size=%ld (0x%lX), offset=%ld (0x%lX)\n", - i, name, - tables[i].format, - tables[i].size, tables[i].size, - tables[i].offset, tables[i].offset )); - } - } - -#endif - - return PCF_Err_Ok; - - Exit: - FT_FREE( face->toc.tables ); - return error; - } - - -#define PCF_METRIC_SIZE 12 - - static - const FT_Frame_Field pcf_metric_header[] = - { -#undef FT_STRUCTURE -#define FT_STRUCTURE PCF_MetricRec - - FT_FRAME_START( PCF_METRIC_SIZE ), - FT_FRAME_SHORT_LE( leftSideBearing ), - FT_FRAME_SHORT_LE( rightSideBearing ), - FT_FRAME_SHORT_LE( characterWidth ), - FT_FRAME_SHORT_LE( ascent ), - FT_FRAME_SHORT_LE( descent ), - FT_FRAME_SHORT_LE( attributes ), - FT_FRAME_END - }; - - - static - const FT_Frame_Field pcf_metric_msb_header[] = - { -#undef FT_STRUCTURE -#define FT_STRUCTURE PCF_MetricRec - - FT_FRAME_START( PCF_METRIC_SIZE ), - FT_FRAME_SHORT( leftSideBearing ), - FT_FRAME_SHORT( rightSideBearing ), - FT_FRAME_SHORT( characterWidth ), - FT_FRAME_SHORT( ascent ), - FT_FRAME_SHORT( descent ), - FT_FRAME_SHORT( attributes ), - FT_FRAME_END - }; - - -#define PCF_COMPRESSED_METRIC_SIZE 5 - - static - const FT_Frame_Field pcf_compressed_metric_header[] = - { -#undef FT_STRUCTURE -#define FT_STRUCTURE PCF_Compressed_MetricRec - - FT_FRAME_START( PCF_COMPRESSED_METRIC_SIZE ), - FT_FRAME_BYTE( leftSideBearing ), - FT_FRAME_BYTE( rightSideBearing ), - FT_FRAME_BYTE( characterWidth ), - FT_FRAME_BYTE( ascent ), - FT_FRAME_BYTE( descent ), - FT_FRAME_END - }; - - - static FT_Error - pcf_get_metric( FT_Stream stream, - FT_ULong format, - PCF_Metric metric ) - { - FT_Error error = PCF_Err_Ok; - - - if ( PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT ) ) - { - const FT_Frame_Field* fields; - - - /* parsing normal metrics */ - fields = PCF_BYTE_ORDER( format ) == MSBFirst - ? pcf_metric_msb_header - : pcf_metric_header; - - /* the following sets `error' but doesn't return in case of failure */ - (void)FT_STREAM_READ_FIELDS( fields, metric ); - } - else - { - PCF_Compressed_MetricRec compr; - - - /* parsing compressed metrics */ - if ( FT_STREAM_READ_FIELDS( pcf_compressed_metric_header, &compr ) ) - goto Exit; - - metric->leftSideBearing = (FT_Short)( compr.leftSideBearing - 0x80 ); - metric->rightSideBearing = (FT_Short)( compr.rightSideBearing - 0x80 ); - metric->characterWidth = (FT_Short)( compr.characterWidth - 0x80 ); - metric->ascent = (FT_Short)( compr.ascent - 0x80 ); - metric->descent = (FT_Short)( compr.descent - 0x80 ); - metric->attributes = 0; - } - - Exit: - return error; - } - - - static FT_Error - pcf_seek_to_table_type( FT_Stream stream, - PCF_Table tables, - FT_Int ntables, - FT_ULong type, - FT_ULong *aformat, - FT_ULong *asize ) - { - FT_Error error = PCF_Err_Invalid_File_Format; - FT_Int i; - - - for ( i = 0; i < ntables; i++ ) - if ( tables[i].type == type ) - { - if ( stream->pos > tables[i].offset ) - { - error = PCF_Err_Invalid_Stream_Skip; - goto Fail; - } - - if ( FT_STREAM_SKIP( tables[i].offset - stream->pos ) ) - { - error = PCF_Err_Invalid_Stream_Skip; - goto Fail; - } - - *asize = tables[i].size; - *aformat = tables[i].format; - - return PCF_Err_Ok; - } - - Fail: - *asize = 0; - return error; - } - - - static FT_Bool - pcf_has_table_type( PCF_Table tables, - FT_Int ntables, - FT_ULong type ) - { - FT_Int i; - - - for ( i = 0; i < ntables; i++ ) - if ( tables[i].type == type ) - return TRUE; - - return FALSE; - } - - -#define PCF_PROPERTY_SIZE 9 - - static - const FT_Frame_Field pcf_property_header[] = - { -#undef FT_STRUCTURE -#define FT_STRUCTURE PCF_ParsePropertyRec - - FT_FRAME_START( PCF_PROPERTY_SIZE ), - FT_FRAME_LONG_LE( name ), - FT_FRAME_BYTE ( isString ), - FT_FRAME_LONG_LE( value ), - FT_FRAME_END - }; - - - static - const FT_Frame_Field pcf_property_msb_header[] = - { -#undef FT_STRUCTURE -#define FT_STRUCTURE PCF_ParsePropertyRec - - FT_FRAME_START( PCF_PROPERTY_SIZE ), - FT_FRAME_LONG( name ), - FT_FRAME_BYTE( isString ), - FT_FRAME_LONG( value ), - FT_FRAME_END - }; - - - FT_LOCAL_DEF( PCF_Property ) - pcf_find_property( PCF_Face face, - const FT_String* prop ) - { - PCF_Property properties = face->properties; - FT_Bool found = 0; - int i; - - - for ( i = 0 ; i < face->nprops && !found; i++ ) - { - if ( !ft_strcmp( properties[i].name, prop ) ) - found = 1; - } - - if ( found ) - return properties + i - 1; - else - return NULL; - } - - - static FT_Error - pcf_get_properties( FT_Stream stream, - PCF_Face face ) - { - PCF_ParseProperty props = 0; - PCF_Property properties; - FT_UInt nprops, i; - FT_ULong format, size; - FT_Error error; - FT_Memory memory = FT_FACE(face)->memory; - FT_ULong string_size; - FT_String* strings = 0; - - - error = pcf_seek_to_table_type( stream, - face->toc.tables, - face->toc.count, - PCF_PROPERTIES, - &format, - &size ); - if ( error ) - goto Bail; - - if ( FT_READ_ULONG_LE( format ) ) - goto Bail; - - FT_TRACE4(( "pcf_get_properties:\n" )); - - FT_TRACE4(( " format = %ld\n", format )); - - if ( !PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT ) ) - goto Bail; - - if ( PCF_BYTE_ORDER( format ) == MSBFirst ) - (void)FT_READ_ULONG( nprops ); - else - (void)FT_READ_ULONG_LE( nprops ); - if ( error ) - goto Bail; - - FT_TRACE4(( " nprop = %d\n", nprops )); - - /* rough estimate */ - if ( nprops > size / PCF_PROPERTY_SIZE ) - { - error = PCF_Err_Invalid_Table; - goto Bail; - } - - face->nprops = nprops; - - if ( FT_NEW_ARRAY( props, nprops ) ) - goto Bail; - - for ( i = 0; i < nprops; i++ ) - { - if ( PCF_BYTE_ORDER( format ) == MSBFirst ) - { - if ( FT_STREAM_READ_FIELDS( pcf_property_msb_header, props + i ) ) - goto Bail; - } - else - { - if ( FT_STREAM_READ_FIELDS( pcf_property_header, props + i ) ) - goto Bail; - } - } - - /* pad the property array */ - /* */ - /* clever here - nprops is the same as the number of odd-units read, */ - /* as only isStringProp are odd length (Keith Packard) */ - /* */ - if ( nprops & 3 ) - { - i = 4 - ( nprops & 3 ); - FT_Stream_Skip( stream, i ); - } - - if ( PCF_BYTE_ORDER( format ) == MSBFirst ) - (void)FT_READ_ULONG( string_size ); - else - (void)FT_READ_ULONG_LE( string_size ); - if ( error ) - goto Bail; - - FT_TRACE4(( " string_size = %ld\n", string_size )); - - /* rough estimate */ - if ( string_size > size - nprops * PCF_PROPERTY_SIZE ) - { - error = PCF_Err_Invalid_Table; - goto Bail; - } - - if ( FT_NEW_ARRAY( strings, string_size ) ) - goto Bail; - - error = FT_Stream_Read( stream, (FT_Byte*)strings, string_size ); - if ( error ) - goto Bail; - - if ( FT_NEW_ARRAY( properties, nprops ) ) - goto Bail; - - face->properties = properties; - - for ( i = 0; i < nprops; i++ ) - { - FT_Long name_offset = props[i].name; - - - if ( ( name_offset < 0 ) || - ( (FT_ULong)name_offset > string_size ) ) - { - error = PCF_Err_Invalid_Offset; - goto Bail; - } - - if ( FT_STRDUP( properties[i].name, strings + name_offset ) ) - goto Bail; - - FT_TRACE4(( " %s:", properties[i].name )); - - properties[i].isString = props[i].isString; - - if ( props[i].isString ) - { - FT_Long value_offset = props[i].value; - - - if ( ( value_offset < 0 ) || - ( (FT_ULong)value_offset > string_size ) ) - { - error = PCF_Err_Invalid_Offset; - goto Bail; - } - - if ( FT_STRDUP( properties[i].value.atom, strings + value_offset ) ) - goto Bail; - - FT_TRACE4(( " `%s'\n", properties[i].value.atom )); - } - else - { - properties[i].value.integer = props[i].value; - - FT_TRACE4(( " %d\n", properties[i].value.integer )); - } - } - - error = PCF_Err_Ok; - - Bail: - FT_FREE( props ); - FT_FREE( strings ); - - return error; - } - - - static FT_Error - pcf_get_metrics( FT_Stream stream, - PCF_Face face ) - { - FT_Error error = PCF_Err_Ok; - FT_Memory memory = FT_FACE(face)->memory; - FT_ULong format, size; - PCF_Metric metrics = 0; - FT_ULong nmetrics, i; - - - error = pcf_seek_to_table_type( stream, - face->toc.tables, - face->toc.count, - PCF_METRICS, - &format, - &size ); - if ( error ) - return error; - - if ( FT_READ_ULONG_LE( format ) ) - goto Bail; - - if ( !PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT ) && - !PCF_FORMAT_MATCH( format, PCF_COMPRESSED_METRICS ) ) - return PCF_Err_Invalid_File_Format; - - if ( PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT ) ) - { - if ( PCF_BYTE_ORDER( format ) == MSBFirst ) - (void)FT_READ_ULONG( nmetrics ); - else - (void)FT_READ_ULONG_LE( nmetrics ); - } - else - { - if ( PCF_BYTE_ORDER( format ) == MSBFirst ) - (void)FT_READ_USHORT( nmetrics ); - else - (void)FT_READ_USHORT_LE( nmetrics ); - } - if ( error ) - return PCF_Err_Invalid_File_Format; - - face->nmetrics = nmetrics; - - FT_TRACE4(( "pcf_get_metrics:\n" )); - - FT_TRACE4(( " number of metrics: %d\n", nmetrics )); - - /* rough estimate */ - if ( PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT ) ) - { - if ( nmetrics > size / PCF_METRIC_SIZE ) - return PCF_Err_Invalid_Table; - } - else - { - if ( nmetrics > size / PCF_COMPRESSED_METRIC_SIZE ) - return PCF_Err_Invalid_Table; - } - - if ( FT_NEW_ARRAY( face->metrics, nmetrics ) ) - return PCF_Err_Out_Of_Memory; - - metrics = face->metrics; - for ( i = 0; i < nmetrics; i++ ) - { - pcf_get_metric( stream, format, metrics + i ); - - metrics[i].bits = 0; - - FT_TRACE5(( " idx %d: width=%d, " - "lsb=%d, rsb=%d, ascent=%d, descent=%d, swidth=%d\n", - i, - ( metrics + i )->characterWidth, - ( metrics + i )->leftSideBearing, - ( metrics + i )->rightSideBearing, - ( metrics + i )->ascent, - ( metrics + i )->descent, - ( metrics + i )->attributes )); - - if ( error ) - break; - } - - if ( error ) - FT_FREE( face->metrics ); - - Bail: - return error; - } - - - static FT_Error - pcf_get_bitmaps( FT_Stream stream, - PCF_Face face ) - { - FT_Error error = PCF_Err_Ok; - FT_Memory memory = FT_FACE(face)->memory; - FT_Long* offsets; - FT_Long bitmapSizes[GLYPHPADOPTIONS]; - FT_ULong format, size; - int nbitmaps, i, sizebitmaps = 0; - - - error = pcf_seek_to_table_type( stream, - face->toc.tables, - face->toc.count, - PCF_BITMAPS, - &format, - &size ); - if ( error ) - return error; - - error = FT_Stream_EnterFrame( stream, 8 ); - if ( error ) - return error; - - format = FT_GET_ULONG_LE(); - if ( PCF_BYTE_ORDER( format ) == MSBFirst ) - nbitmaps = FT_GET_ULONG(); - else - nbitmaps = FT_GET_ULONG_LE(); - - FT_Stream_ExitFrame( stream ); - - if ( !PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT ) ) - return PCF_Err_Invalid_File_Format; - - FT_TRACE4(( "pcf_get_bitmaps:\n" )); - - FT_TRACE4(( " number of bitmaps: %d\n", nbitmaps )); - - if ( nbitmaps != face->nmetrics ) - return PCF_Err_Invalid_File_Format; - - if ( FT_NEW_ARRAY( offsets, nbitmaps ) ) - return error; - - for ( i = 0; i < nbitmaps; i++ ) - { - if ( PCF_BYTE_ORDER( format ) == MSBFirst ) - (void)FT_READ_LONG( offsets[i] ); - else - (void)FT_READ_LONG_LE( offsets[i] ); - - FT_TRACE5(( " bitmap %d: offset %ld (0x%lX)\n", - i, offsets[i], offsets[i] )); - } - if ( error ) - goto Bail; - - for ( i = 0; i < GLYPHPADOPTIONS; i++ ) - { - if ( PCF_BYTE_ORDER( format ) == MSBFirst ) - (void)FT_READ_LONG( bitmapSizes[i] ); - else - (void)FT_READ_LONG_LE( bitmapSizes[i] ); - if ( error ) - goto Bail; - - sizebitmaps = bitmapSizes[PCF_GLYPH_PAD_INDEX( format )]; - - FT_TRACE4(( " padding %d implies a size of %ld\n", i, bitmapSizes[i] )); - } - - FT_TRACE4(( " %d bitmaps, padding index %ld\n", - nbitmaps, - PCF_GLYPH_PAD_INDEX( format ) )); - FT_TRACE4(( " bitmap size = %d\n", sizebitmaps )); - - FT_UNUSED( sizebitmaps ); /* only used for debugging */ - - for ( i = 0; i < nbitmaps; i++ ) - { - /* rough estimate */ - if ( ( offsets[i] < 0 ) || - ( (FT_ULong)offsets[i] > size ) ) - { - FT_ERROR(( "pcf_get_bitmaps:")); - FT_ERROR(( " invalid offset to bitmap data of glyph %d\n", i )); - } - else - face->metrics[i].bits = stream->pos + offsets[i]; - } - - face->bitmapsFormat = format; - - Bail: - FT_FREE( offsets ); - return error; - } - - - static FT_Error - pcf_get_encodings( FT_Stream stream, - PCF_Face face ) - { - FT_Error error = PCF_Err_Ok; - FT_Memory memory = FT_FACE(face)->memory; - FT_ULong format, size; - int firstCol, lastCol; - int firstRow, lastRow; - int nencoding, encodingOffset; - int i, j; - PCF_Encoding tmpEncoding, encoding = 0; - - - error = pcf_seek_to_table_type( stream, - face->toc.tables, - face->toc.count, - PCF_BDF_ENCODINGS, - &format, - &size ); - if ( error ) - return error; - - error = FT_Stream_EnterFrame( stream, 14 ); - if ( error ) - return error; - - format = FT_GET_ULONG_LE(); - - if ( PCF_BYTE_ORDER( format ) == MSBFirst ) - { - firstCol = FT_GET_SHORT(); - lastCol = FT_GET_SHORT(); - firstRow = FT_GET_SHORT(); - lastRow = FT_GET_SHORT(); - face->defaultChar = FT_GET_SHORT(); - } - else - { - firstCol = FT_GET_SHORT_LE(); - lastCol = FT_GET_SHORT_LE(); - firstRow = FT_GET_SHORT_LE(); - lastRow = FT_GET_SHORT_LE(); - face->defaultChar = FT_GET_SHORT_LE(); - } - - FT_Stream_ExitFrame( stream ); - - if ( !PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT ) ) - return PCF_Err_Invalid_File_Format; - - FT_TRACE4(( "pdf_get_encodings:\n" )); - - FT_TRACE4(( " firstCol %d, lastCol %d, firstRow %d, lastRow %d\n", - firstCol, lastCol, firstRow, lastRow )); - - nencoding = ( lastCol - firstCol + 1 ) * ( lastRow - firstRow + 1 ); - - if ( FT_NEW_ARRAY( tmpEncoding, 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++ ) - { - if ( PCF_BYTE_ORDER( format ) == MSBFirst ) - encodingOffset = FT_GET_SHORT(); - else - encodingOffset = FT_GET_SHORT_LE(); - - if ( encodingOffset != -1 ) - { - tmpEncoding[j].enc = ( ( ( i / ( lastCol - firstCol + 1 ) ) + - firstRow ) * 256 ) + - ( ( i % ( lastCol - firstCol + 1 ) ) + - firstCol ); - - tmpEncoding[j].glyph = (FT_Short)encodingOffset; - - FT_TRACE5(( " code %d (0x%04X): idx %d\n", - tmpEncoding[j].enc, tmpEncoding[j].enc, - tmpEncoding[j].glyph )); - - j++; - } - } - FT_Stream_ExitFrame( stream ); - - if ( FT_NEW_ARRAY( encoding, j ) ) - goto Bail; - - for ( i = 0; i < j; i++ ) - { - encoding[i].enc = tmpEncoding[i].enc; - encoding[i].glyph = tmpEncoding[i].glyph; - } - - face->nencodings = j; - face->encodings = encoding; - FT_FREE( tmpEncoding ); - - return error; - - Bail: - FT_FREE( encoding ); - FT_FREE( tmpEncoding ); - return error; - } - - - static - const FT_Frame_Field pcf_accel_header[] = - { -#undef FT_STRUCTURE -#define FT_STRUCTURE PCF_AccelRec - - FT_FRAME_START( 20 ), - FT_FRAME_BYTE ( noOverlap ), - FT_FRAME_BYTE ( constantMetrics ), - FT_FRAME_BYTE ( terminalFont ), - FT_FRAME_BYTE ( constantWidth ), - FT_FRAME_BYTE ( inkInside ), - FT_FRAME_BYTE ( inkMetrics ), - FT_FRAME_BYTE ( drawDirection ), - FT_FRAME_SKIP_BYTES( 1 ), - FT_FRAME_LONG_LE ( fontAscent ), - FT_FRAME_LONG_LE ( fontDescent ), - FT_FRAME_LONG_LE ( maxOverlap ), - FT_FRAME_END - }; - - - static - const FT_Frame_Field pcf_accel_msb_header[] = - { -#undef FT_STRUCTURE -#define FT_STRUCTURE PCF_AccelRec - - FT_FRAME_START( 20 ), - FT_FRAME_BYTE ( noOverlap ), - FT_FRAME_BYTE ( constantMetrics ), - FT_FRAME_BYTE ( terminalFont ), - FT_FRAME_BYTE ( constantWidth ), - FT_FRAME_BYTE ( inkInside ), - FT_FRAME_BYTE ( inkMetrics ), - FT_FRAME_BYTE ( drawDirection ), - FT_FRAME_SKIP_BYTES( 1 ), - FT_FRAME_LONG ( fontAscent ), - FT_FRAME_LONG ( fontDescent ), - FT_FRAME_LONG ( maxOverlap ), - FT_FRAME_END - }; - - - static FT_Error - pcf_get_accel( FT_Stream stream, - PCF_Face face, - FT_ULong type ) - { - FT_ULong format, size; - FT_Error error = PCF_Err_Ok; - PCF_Accel accel = &face->accel; - - - error = pcf_seek_to_table_type( stream, - face->toc.tables, - face->toc.count, - type, - &format, - &size ); - if ( error ) - goto Bail; - - if ( FT_READ_ULONG_LE( format ) ) - goto Bail; - - if ( !PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT ) && - !PCF_FORMAT_MATCH( format, PCF_ACCEL_W_INKBOUNDS ) ) - goto Bail; - - if ( PCF_BYTE_ORDER( format ) == MSBFirst ) - { - if ( FT_STREAM_READ_FIELDS( pcf_accel_msb_header, accel ) ) - goto Bail; - } - else - { - if ( FT_STREAM_READ_FIELDS( pcf_accel_header, accel ) ) - goto Bail; - } - - error = pcf_get_metric( stream, - format & ( ~PCF_FORMAT_MASK ), - &(accel->minbounds) ); - if ( error ) - goto Bail; - - error = pcf_get_metric( stream, - format & ( ~PCF_FORMAT_MASK ), - &(accel->maxbounds) ); - if ( error ) - goto Bail; - - if ( PCF_FORMAT_MATCH( format, PCF_ACCEL_W_INKBOUNDS ) ) - { - error = pcf_get_metric( stream, - format & ( ~PCF_FORMAT_MASK ), - &(accel->ink_minbounds) ); - if ( error ) - goto Bail; - - error = pcf_get_metric( stream, - format & ( ~PCF_FORMAT_MASK ), - &(accel->ink_maxbounds) ); - if ( error ) - goto Bail; - } - else - { - accel->ink_minbounds = accel->minbounds; /* I'm not sure about this */ - accel->ink_maxbounds = accel->maxbounds; - } - - Bail: - return error; - } - - - static FT_Error - pcf_interpret_style( PCF_Face pcf ) - { - FT_Error error = PCF_Err_Ok; - FT_Face face = FT_FACE( pcf ); - FT_Memory memory = face->memory; - - PCF_Property prop; - - int nn, len; - char* strings[4] = { NULL, NULL, NULL, NULL }; - int lengths[4]; - - - face->style_flags = 0; - - prop = pcf_find_property( pcf, "SLANT" ); - if ( prop && prop->isString && - ( *(prop->value.atom) == 'O' || *(prop->value.atom) == 'o' || - *(prop->value.atom) == 'I' || *(prop->value.atom) == 'i' ) ) - { - face->style_flags |= FT_STYLE_FLAG_ITALIC; - strings[2] = ( *(prop->value.atom) == 'O' || - *(prop->value.atom) == 'o' ) ? (char *)"Oblique" - : (char *)"Italic"; - } - - prop = pcf_find_property( pcf, "WEIGHT_NAME" ); - if ( prop && prop->isString && - ( *(prop->value.atom) == 'B' || *(prop->value.atom) == 'b' ) ) - { - face->style_flags |= FT_STYLE_FLAG_BOLD; - strings[1] = (char *)"Bold"; - } - - prop = pcf_find_property( pcf, "SETWIDTH_NAME" ); - if ( prop && prop->isString && - *(prop->value.atom) && - !( *(prop->value.atom) == 'N' || *(prop->value.atom) == 'n' ) ) - strings[3] = (char *)(prop->value.atom); - - prop = pcf_find_property( pcf, "ADD_STYLE_NAME" ); - if ( prop && prop->isString && - *(prop->value.atom) && - !( *(prop->value.atom) == 'N' || *(prop->value.atom) == 'n' ) ) - strings[0] = (char *)(prop->value.atom); - - for ( len = 0, nn = 0; nn < 4; nn++ ) - { - lengths[nn] = 0; - if ( strings[nn] ) - { - lengths[nn] = ft_strlen( strings[nn] ); - len += lengths[nn] + 1; - } - } - - if ( len == 0 ) - { - strings[0] = (char *)"Regular"; - lengths[0] = ft_strlen( strings[0] ); - len = lengths[0] + 1; - } - - { - char* s; - - - if ( FT_ALLOC( face->style_name, len ) ) - return error; - - s = face->style_name; - - for ( nn = 0; nn < 4; nn++ ) - { - char* src = strings[nn]; - - - len = lengths[nn]; - - if ( src == NULL ) - continue; - - /* separate elements with a space */ - if ( s != face->style_name ) - *s++ = ' '; - - ft_memcpy( s, src, len ); - - /* need to convert spaces to dashes for */ - /* add_style_name and setwidth_name */ - if ( nn == 0 || nn == 3 ) - { - int mm; - - - for ( mm = 0; mm < len; mm++ ) - if (s[mm] == ' ') - s[mm] = '-'; - } - - s += len; - } - *s = 0; - } - - return error; - } - - - FT_LOCAL_DEF( FT_Error ) - pcf_load_font( FT_Stream stream, - PCF_Face face ) - { - FT_Error error = PCF_Err_Ok; - FT_Memory memory = FT_FACE(face)->memory; - FT_Bool hasBDFAccelerators; - - - error = pcf_read_TOC( stream, face ); - if ( error ) - goto Exit; - - error = pcf_get_properties( stream, face ); - if ( error ) - goto Exit; - - /* Use the old accelerators if no BDF accelerators are in the file. */ - hasBDFAccelerators = pcf_has_table_type( face->toc.tables, - face->toc.count, - PCF_BDF_ACCELERATORS ); - if ( !hasBDFAccelerators ) - { - error = pcf_get_accel( stream, face, PCF_ACCELERATORS ); - if ( error ) - goto Exit; - } - - /* metrics */ - error = pcf_get_metrics( stream, face ); - if ( error ) - goto Exit; - - /* bitmaps */ - error = pcf_get_bitmaps( stream, face ); - if ( error ) - goto Exit; - - /* encodings */ - error = pcf_get_encodings( stream, face ); - if ( error ) - goto Exit; - - /* BDF style accelerators (i.e. bounds based on encoded glyphs) */ - if ( hasBDFAccelerators ) - { - error = pcf_get_accel( stream, face, PCF_BDF_ACCELERATORS ); - if ( error ) - goto Exit; - } - - /* XXX: TO DO: inkmetrics and glyph_names are missing */ - - /* now construct the face object */ - { - FT_Face root = FT_FACE( face ); - PCF_Property prop; - - - root->num_faces = 1; - root->face_index = 0; - root->face_flags = FT_FACE_FLAG_FIXED_SIZES | - FT_FACE_FLAG_HORIZONTAL | - FT_FACE_FLAG_FAST_GLYPHS; - - if ( face->accel.constantWidth ) - root->face_flags |= FT_FACE_FLAG_FIXED_WIDTH; - - if ( ( error = pcf_interpret_style( face ) ) != 0 ) - goto Exit; - - prop = pcf_find_property( face, "FAMILY_NAME" ); - if ( prop && prop->isString ) - { - if ( FT_STRDUP( root->family_name, prop->value.atom ) ) - goto Exit; - } - else - root->family_name = NULL; - - /* - * Note: We shift all glyph indices by +1 since we must - * respect the convention that glyph 0 always corresponds - * to the `missing glyph'. - * - * This implies bumping the number of `available' glyphs by 1. - */ - root->num_glyphs = face->nmetrics + 1; - - root->num_fixed_sizes = 1; - if ( FT_NEW_ARRAY( root->available_sizes, 1 ) ) - goto Exit; - - { - FT_Bitmap_Size* bsize = root->available_sizes; - FT_Short resolution_x = 0, resolution_y = 0; - - - FT_MEM_ZERO( bsize, sizeof ( FT_Bitmap_Size ) ); - -#if 0 - bsize->height = face->accel.maxbounds.ascent << 6; -#endif - bsize->height = (FT_Short)( face->accel.fontAscent + - face->accel.fontDescent ); - - prop = pcf_find_property( face, "AVERAGE_WIDTH" ); - if ( prop ) - bsize->width = (FT_Short)( ( prop->value.integer + 5 ) / 10 ); - else - bsize->width = (FT_Short)( bsize->height * 2/3 ); - - prop = pcf_find_property( face, "POINT_SIZE" ); - if ( prop ) - /* convert from 722.7 decipoints to 72 points per inch */ - bsize->size = - (FT_Pos)( ( prop->value.integer * 64 * 7200 + 36135L ) / 72270L ); - - prop = pcf_find_property( face, "PIXEL_SIZE" ); - if ( prop ) - bsize->y_ppem = (FT_Short)prop->value.integer << 6; - - prop = pcf_find_property( face, "RESOLUTION_X" ); - if ( prop ) - resolution_x = (FT_Short)prop->value.integer; - - prop = pcf_find_property( face, "RESOLUTION_Y" ); - if ( prop ) - resolution_y = (FT_Short)prop->value.integer; - - if ( bsize->y_ppem == 0 ) - { - bsize->y_ppem = bsize->size; - if ( resolution_y ) - bsize->y_ppem = bsize->y_ppem * resolution_y / 72; - } - if ( resolution_x && resolution_y ) - bsize->x_ppem = bsize->y_ppem * resolution_x / resolution_y; - else - bsize->x_ppem = bsize->y_ppem; - } - - /* set up charset */ - { - PCF_Property charset_registry = 0, charset_encoding = 0; - - - charset_registry = pcf_find_property( face, "CHARSET_REGISTRY" ); - charset_encoding = pcf_find_property( face, "CHARSET_ENCODING" ); - - if ( charset_registry && charset_registry->isString && - charset_encoding && charset_encoding->isString ) - { - if ( FT_STRDUP( face->charset_encoding, - charset_encoding->value.atom ) || - FT_STRDUP( face->charset_registry, - charset_registry->value.atom ) ) - goto Exit; - } - } - } - - Exit: - if ( error ) - { - /* This is done to respect the behaviour of the original */ - /* PCF font driver. */ - error = PCF_Err_Invalid_File_Format; - } - - return error; - } - - -/* END */ |