+++ /dev/null
-/***************************************************************************/
-/* */
-/* psobjs.c */
-/* */
-/* Auxiliary functions for PostScript fonts (body). */
-/* */
-/* Copyright 1996-2016 by */
-/* David Turner, Robert Wilhelm, and Werner Lemberg. */
-/* */
-/* This file is part of the FreeType project, and may only be used, */
-/* modified, and distributed under the terms of the FreeType project */
-/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
-/* this file you indicate that you have read the license and */
-/* understand and accept it fully. */
-/* */
-/***************************************************************************/
-
-
-#include <ft2build.h>
-#include FT_INTERNAL_POSTSCRIPT_AUX_H
-#include FT_INTERNAL_DEBUG_H
-#include FT_INTERNAL_CALC_H
-
-#include "psobjs.h"
-#include "psconv.h"
-
-#include "psauxerr.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_psobjs
-
-
- /*************************************************************************/
- /*************************************************************************/
- /***** *****/
- /***** PS_TABLE *****/
- /***** *****/
- /*************************************************************************/
- /*************************************************************************/
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* ps_table_new */
- /* */
- /* <Description> */
- /* Initializes a PS_Table. */
- /* */
- /* <InOut> */
- /* table :: The address of the target table. */
- /* */
- /* <Input> */
- /* count :: The table size = the maximum number of elements. */
- /* */
- /* memory :: The memory object to use for all subsequent */
- /* reallocations. */
- /* */
- /* <Return> */
- /* FreeType error code. 0 means success. */
- /* */
- FT_LOCAL_DEF( FT_Error )
- ps_table_new( PS_Table table,
- FT_Int count,
- FT_Memory memory )
- {
- FT_Error error;
-
-
- table->memory = memory;
- if ( FT_NEW_ARRAY( table->elements, count ) ||
- FT_NEW_ARRAY( table->lengths, count ) )
- goto Exit;
-
- table->max_elems = count;
- table->init = 0xDEADBEEFUL;
- table->num_elems = 0;
- table->block = NULL;
- table->capacity = 0;
- table->cursor = 0;
-
- *(PS_Table_FuncsRec*)&table->funcs = ps_table_funcs;
-
- Exit:
- if ( error )
- FT_FREE( table->elements );
-
- return error;
- }
-
-
- static void
- shift_elements( PS_Table table,
- FT_Byte* old_base )
- {
- FT_PtrDist delta = table->block - old_base;
- FT_Byte** offset = table->elements;
- FT_Byte** limit = offset + table->max_elems;
-
-
- for ( ; offset < limit; offset++ )
- {
- if ( offset[0] )
- offset[0] += delta;
- }
- }
-
-
- static FT_Error
- reallocate_t1_table( PS_Table table,
- FT_Offset new_size )
- {
- FT_Memory memory = table->memory;
- FT_Byte* old_base = table->block;
- FT_Error error;
-
-
- /* allocate new base block */
- if ( FT_ALLOC( table->block, new_size ) )
- {
- table->block = old_base;
- return error;
- }
-
- /* copy elements and shift offsets */
- if ( old_base )
- {
- FT_MEM_COPY( table->block, old_base, table->capacity );
- shift_elements( table, old_base );
- FT_FREE( old_base );
- }
-
- table->capacity = new_size;
-
- return FT_Err_Ok;
- }
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* ps_table_add */
- /* */
- /* <Description> */
- /* Adds an object to a PS_Table, possibly growing its memory block. */
- /* */
- /* <InOut> */
- /* table :: The target table. */
- /* */
- /* <Input> */
- /* idx :: The index of the object in the table. */
- /* */
- /* object :: The address of the object to copy in memory. */
- /* */
- /* length :: The length in bytes of the source object. */
- /* */
- /* <Return> */
- /* FreeType error code. 0 means success. An error is returned if a */
- /* reallocation fails. */
- /* */
- FT_LOCAL_DEF( FT_Error )
- ps_table_add( PS_Table table,
- FT_Int idx,
- void* object,
- FT_UInt length )
- {
- if ( idx < 0 || idx >= table->max_elems )
- {
- FT_ERROR(( "ps_table_add: invalid index\n" ));
- return FT_THROW( Invalid_Argument );
- }
-
- /* grow the base block if needed */
- if ( table->cursor + length > table->capacity )
- {
- FT_Error error;
- FT_Offset new_size = table->capacity;
- FT_PtrDist in_offset;
-
-
- in_offset = (FT_Byte*)object - table->block;
- if ( in_offset < 0 || (FT_Offset)in_offset >= table->capacity )
- in_offset = -1;
-
- while ( new_size < table->cursor + length )
- {
- /* increase size by 25% and round up to the nearest multiple
- of 1024 */
- new_size += ( new_size >> 2 ) + 1;
- new_size = FT_PAD_CEIL( new_size, 1024 );
- }
-
- error = reallocate_t1_table( table, new_size );
- if ( error )
- return error;
-
- if ( in_offset >= 0 )
- object = table->block + in_offset;
- }
-
- /* add the object to the base block and adjust offset */
- table->elements[idx] = table->block + table->cursor;
- table->lengths [idx] = length;
- FT_MEM_COPY( table->block + table->cursor, object, length );
-
- table->cursor += length;
- return FT_Err_Ok;
- }
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* ps_table_done */
- /* */
- /* <Description> */
- /* Finalizes a PS_TableRec (i.e., reallocate it to its current */
- /* cursor). */
- /* */
- /* <InOut> */
- /* table :: The target table. */
- /* */
- /* <Note> */
- /* This function does NOT release the heap's memory block. It is up */
- /* to the caller to clean it, or reference it in its own structures. */
- /* */
- FT_LOCAL_DEF( void )
- ps_table_done( PS_Table table )
- {
- FT_Memory memory = table->memory;
- FT_Error error;
- FT_Byte* old_base = table->block;
-
-
- /* should never fail, because rec.cursor <= rec.size */
- if ( !old_base )
- return;
-
- if ( FT_ALLOC( table->block, table->cursor ) )
- return;
- FT_MEM_COPY( table->block, old_base, table->cursor );
- shift_elements( table, old_base );
-
- table->capacity = table->cursor;
- FT_FREE( old_base );
-
- FT_UNUSED( error );
- }
-
-
- FT_LOCAL_DEF( void )
- ps_table_release( PS_Table table )
- {
- FT_Memory memory = table->memory;
-
-
- if ( (FT_ULong)table->init == 0xDEADBEEFUL )
- {
- FT_FREE( table->block );
- FT_FREE( table->elements );
- FT_FREE( table->lengths );
- table->init = 0;
- }
- }
-
-
- /*************************************************************************/
- /*************************************************************************/
- /***** *****/
- /***** T1 PARSER *****/
- /***** *****/
- /*************************************************************************/
- /*************************************************************************/
-
-
- /* first character must be already part of the comment */
-
- static void
- skip_comment( FT_Byte* *acur,
- FT_Byte* limit )
- {
- FT_Byte* cur = *acur;
-
-
- while ( cur < limit )
- {
- if ( IS_PS_NEWLINE( *cur ) )
- break;
- cur++;
- }
-
- *acur = cur;
- }
-
-
- static void
- skip_spaces( FT_Byte* *acur,
- FT_Byte* limit )
- {
- FT_Byte* cur = *acur;
-
-
- while ( cur < limit )
- {
- if ( !IS_PS_SPACE( *cur ) )
- {
- if ( *cur == '%' )
- /* According to the PLRM, a comment is equal to a space. */
- skip_comment( &cur, limit );
- else
- break;
- }
- cur++;
- }
-
- *acur = cur;
- }
-
-
-#define IS_OCTAL_DIGIT( c ) ( '0' <= (c) && (c) <= '7' )
-
-
- /* first character must be `('; */
- /* *acur is positioned at the character after the closing `)' */
-
- static FT_Error
- skip_literal_string( FT_Byte* *acur,
- FT_Byte* limit )
- {
- FT_Byte* cur = *acur;
- FT_Int embed = 0;
- FT_Error error = FT_ERR( Invalid_File_Format );
- unsigned int i;
-
-
- while ( cur < limit )
- {
- FT_Byte c = *cur;
-
-
- ++cur;
-
- if ( c == '\\' )
- {
- /* Red Book 3rd ed., section `Literal Text Strings', p. 29: */
- /* A backslash can introduce three different types */
- /* of escape sequences: */
- /* - a special escaped char like \r, \n, etc. */
- /* - a one-, two-, or three-digit octal number */
- /* - none of the above in which case the backslash is ignored */
-
- if ( cur == limit )
- /* error (or to be ignored?) */
- break;
-
- switch ( *cur )
- {
- /* skip `special' escape */
- case 'n':
- case 'r':
- case 't':
- case 'b':
- case 'f':
- case '\\':
- case '(':
- case ')':
- ++cur;
- break;
-
- default:
- /* skip octal escape or ignore backslash */
- for ( i = 0; i < 3 && cur < limit; ++i )
- {
- if ( !IS_OCTAL_DIGIT( *cur ) )
- break;
-
- ++cur;
- }
- }
- }
- else if ( c == '(' )
- embed++;
- else if ( c == ')' )
- {
- embed--;
- if ( embed == 0 )
- {
- error = FT_Err_Ok;
- break;
- }
- }
- }
-
- *acur = cur;
-
- return error;
- }
-
-
- /* first character must be `<' */
-
- static FT_Error
- skip_string( FT_Byte* *acur,
- FT_Byte* limit )
- {
- FT_Byte* cur = *acur;
- FT_Error err = FT_Err_Ok;
-
-
- while ( ++cur < limit )
- {
- /* All whitespace characters are ignored. */
- skip_spaces( &cur, limit );
- if ( cur >= limit )
- break;
-
- if ( !IS_PS_XDIGIT( *cur ) )
- break;
- }
-
- if ( cur < limit && *cur != '>' )
- {
- FT_ERROR(( "skip_string: missing closing delimiter `>'\n" ));
- err = FT_THROW( Invalid_File_Format );
- }
- else
- cur++;
-
- *acur = cur;
- return err;
- }
-
-
- /* first character must be the opening brace that */
- /* starts the procedure */
-
- /* NB: [ and ] need not match: */
- /* `/foo {[} def' is a valid PostScript fragment, */
- /* even within a Type1 font */
-
- static FT_Error
- skip_procedure( FT_Byte* *acur,
- FT_Byte* limit )
- {
- FT_Byte* cur;
- FT_Int embed = 0;
- FT_Error error = FT_Err_Ok;
-
-
- FT_ASSERT( **acur == '{' );
-
- for ( cur = *acur; cur < limit && error == FT_Err_Ok; ++cur )
- {
- switch ( *cur )
- {
- case '{':
- ++embed;
- break;
-
- case '}':
- --embed;
- if ( embed == 0 )
- {
- ++cur;
- goto end;
- }
- break;
-
- case '(':
- error = skip_literal_string( &cur, limit );
- break;
-
- case '<':
- error = skip_string( &cur, limit );
- break;
-
- case '%':
- skip_comment( &cur, limit );
- break;
- }
- }
-
- end:
- if ( embed != 0 )
- error = FT_THROW( Invalid_File_Format );
-
- *acur = cur;
-
- return error;
- }
-
-
- /***********************************************************************/
- /* */
- /* All exported parsing routines handle leading whitespace and stop at */
- /* the first character which isn't part of the just handled token. */
- /* */
- /***********************************************************************/
-
-
- FT_LOCAL_DEF( void )
- ps_parser_skip_PS_token( PS_Parser parser )
- {
- /* Note: PostScript allows any non-delimiting, non-whitespace */
- /* character in a name (PS Ref Manual, 3rd ed, p31). */
- /* PostScript delimiters are (, ), <, >, [, ], {, }, /, and %. */
-
- FT_Byte* cur = parser->cursor;
- FT_Byte* limit = parser->limit;
- FT_Error error = FT_Err_Ok;
-
-
- skip_spaces( &cur, limit ); /* this also skips comments */
- if ( cur >= limit )
- goto Exit;
-
- /* self-delimiting, single-character tokens */
- if ( *cur == '[' || *cur == ']' )
- {
- cur++;
- goto Exit;
- }
-
- /* skip balanced expressions (procedures and strings) */
-
- if ( *cur == '{' ) /* {...} */
- {
- error = skip_procedure( &cur, limit );
- goto Exit;
- }
-
- if ( *cur == '(' ) /* (...) */
- {
- error = skip_literal_string( &cur, limit );
- goto Exit;
- }
-
- if ( *cur == '<' ) /* <...> */
- {
- if ( cur + 1 < limit && *(cur + 1) == '<' ) /* << */
- {
- cur++;
- cur++;
- }
- else
- error = skip_string( &cur, limit );
-
- goto Exit;
- }
-
- if ( *cur == '>' )
- {
- cur++;
- if ( cur >= limit || *cur != '>' ) /* >> */
- {
- FT_ERROR(( "ps_parser_skip_PS_token:"
- " unexpected closing delimiter `>'\n" ));
- error = FT_THROW( Invalid_File_Format );
- goto Exit;
- }
- cur++;
- goto Exit;
- }
-
- if ( *cur == '/' )
- cur++;
-
- /* anything else */
- while ( cur < limit )
- {
- /* *cur might be invalid (e.g., ')' or '}'), but this */
- /* is handled by the test `cur == parser->cursor' below */
- if ( IS_PS_DELIM( *cur ) )
- break;
-
- cur++;
- }
-
- Exit:
- if ( cur < limit && cur == parser->cursor )
- {
- FT_ERROR(( "ps_parser_skip_PS_token:"
- " current token is `%c' which is self-delimiting\n"
- " "
- " but invalid at this point\n",
- *cur ));
-
- error = FT_THROW( Invalid_File_Format );
- }
-
- if ( cur > limit )
- cur = limit;
-
- parser->error = error;
- parser->cursor = cur;
- }
-
-
- FT_LOCAL_DEF( void )
- ps_parser_skip_spaces( PS_Parser parser )
- {
- skip_spaces( &parser->cursor, parser->limit );
- }
-
-
- /* `token' here means either something between balanced delimiters */
- /* or the next token; the delimiters are not removed. */
-
- FT_LOCAL_DEF( void )
- ps_parser_to_token( PS_Parser parser,
- T1_Token token )
- {
- FT_Byte* cur;
- FT_Byte* limit;
- FT_Int embed;
-
-
- token->type = T1_TOKEN_TYPE_NONE;
- token->start = NULL;
- token->limit = NULL;
-
- /* first of all, skip leading whitespace */
- ps_parser_skip_spaces( parser );
-
- cur = parser->cursor;
- limit = parser->limit;
-
- if ( cur >= limit )
- return;
-
- switch ( *cur )
- {
- /************* check for literal string *****************/
- case '(':
- token->type = T1_TOKEN_TYPE_STRING;
- token->start = cur;
-
- if ( skip_literal_string( &cur, limit ) == FT_Err_Ok )
- token->limit = cur;
- break;
-
- /************* check for programs/array *****************/
- case '{':
- token->type = T1_TOKEN_TYPE_ARRAY;
- token->start = cur;
-
- if ( skip_procedure( &cur, limit ) == FT_Err_Ok )
- token->limit = cur;
- break;
-
- /************* check for table/array ********************/
- /* XXX: in theory we should also look for "<<" */
- /* since this is semantically equivalent to "["; */
- /* in practice it doesn't matter (?) */
- case '[':
- token->type = T1_TOKEN_TYPE_ARRAY;
- embed = 1;
- token->start = cur++;
-
- /* we need this to catch `[ ]' */
- parser->cursor = cur;
- ps_parser_skip_spaces( parser );
- cur = parser->cursor;
-
- while ( cur < limit && !parser->error )
- {
- /* XXX: this is wrong because it does not */
- /* skip comments, procedures, and strings */
- if ( *cur == '[' )
- embed++;
- else if ( *cur == ']' )
- {
- embed--;
- if ( embed <= 0 )
- {
- token->limit = ++cur;
- break;
- }
- }
-
- parser->cursor = cur;
- ps_parser_skip_PS_token( parser );
- /* we need this to catch `[XXX ]' */
- ps_parser_skip_spaces ( parser );
- cur = parser->cursor;
- }
- break;
-
- /* ************ otherwise, it is any token **************/
- default:
- token->start = cur;
- token->type = ( *cur == '/' ? T1_TOKEN_TYPE_KEY : T1_TOKEN_TYPE_ANY );
- ps_parser_skip_PS_token( parser );
- cur = parser->cursor;
- if ( !parser->error )
- token->limit = cur;
- }
-
- if ( !token->limit )
- {
- token->start = NULL;
- token->type = T1_TOKEN_TYPE_NONE;
- }
-
- parser->cursor = cur;
- }
-
-
- /* NB: `tokens' can be NULL if we only want to count */
- /* the number of array elements */
-
- FT_LOCAL_DEF( void )
- ps_parser_to_token_array( PS_Parser parser,
- T1_Token tokens,
- FT_UInt max_tokens,
- FT_Int* pnum_tokens )
- {
- T1_TokenRec master;
-
-
- *pnum_tokens = -1;
-
- /* this also handles leading whitespace */
- ps_parser_to_token( parser, &master );
-
- if ( master.type == T1_TOKEN_TYPE_ARRAY )
- {
- FT_Byte* old_cursor = parser->cursor;
- FT_Byte* old_limit = parser->limit;
- T1_Token cur = tokens;
- T1_Token limit = cur + max_tokens;
-
-
- /* don't include outermost delimiters */
- parser->cursor = master.start + 1;
- parser->limit = master.limit - 1;
-
- while ( parser->cursor < parser->limit )
- {
- T1_TokenRec token;
-
-
- ps_parser_to_token( parser, &token );
- if ( !token.type )
- break;
-
- if ( tokens != NULL && cur < limit )
- *cur = token;
-
- cur++;
- }
-
- *pnum_tokens = (FT_Int)( cur - tokens );
-
- parser->cursor = old_cursor;
- parser->limit = old_limit;
- }
- }
-
-
- /* first character must be a delimiter or a part of a number */
- /* NB: `coords' can be NULL if we just want to skip the */
- /* array; in this case we ignore `max_coords' */
-
- static FT_Int
- ps_tocoordarray( FT_Byte* *acur,
- FT_Byte* limit,
- FT_Int max_coords,
- FT_Short* coords )
- {
- FT_Byte* cur = *acur;
- FT_Int count = 0;
- FT_Byte c, ender;
-
-
- if ( cur >= limit )
- goto Exit;
-
- /* check for the beginning of an array; otherwise, only one number */
- /* will be read */
- c = *cur;
- ender = 0;
-
- if ( c == '[' )
- ender = ']';
- else if ( c == '{' )
- ender = '}';
-
- if ( ender )
- cur++;
-
- /* now, read the coordinates */
- while ( cur < limit )
- {
- FT_Short dummy;
- FT_Byte* old_cur;
-
-
- /* skip whitespace in front of data */
- skip_spaces( &cur, limit );
- if ( cur >= limit )
- goto Exit;
-
- if ( *cur == ender )
- {
- cur++;
- break;
- }
-
- old_cur = cur;
-
- if ( coords != NULL && count >= max_coords )
- break;
-
- /* call PS_Conv_ToFixed() even if coords == NULL */
- /* to properly parse number at `cur' */
- *( coords != NULL ? &coords[count] : &dummy ) =
- (FT_Short)( PS_Conv_ToFixed( &cur, limit, 0 ) >> 16 );
-
- if ( old_cur == cur )
- {
- count = -1;
- goto Exit;
- }
- else
- count++;
-
- if ( !ender )
- break;
- }
-
- Exit:
- *acur = cur;
- return count;
- }
-
-
- /* first character must be a delimiter or a part of a number */
- /* NB: `values' can be NULL if we just want to skip the */
- /* array; in this case we ignore `max_values' */
- /* */
- /* return number of successfully parsed values */
-
- static FT_Int
- ps_tofixedarray( FT_Byte* *acur,
- FT_Byte* limit,
- FT_Int max_values,
- FT_Fixed* values,
- FT_Int power_ten )
- {
- FT_Byte* cur = *acur;
- FT_Int count = 0;
- FT_Byte c, ender;
-
-
- if ( cur >= limit )
- goto Exit;
-
- /* Check for the beginning of an array. Otherwise, only one number */
- /* will be read. */
- c = *cur;
- ender = 0;
-
- if ( c == '[' )
- ender = ']';
- else if ( c == '{' )
- ender = '}';
-
- if ( ender )
- cur++;
-
- /* now, read the values */
- while ( cur < limit )
- {
- FT_Fixed dummy;
- FT_Byte* old_cur;
-
-
- /* skip whitespace in front of data */
- skip_spaces( &cur, limit );
- if ( cur >= limit )
- goto Exit;
-
- if ( *cur == ender )
- {
- cur++;
- break;
- }
-
- old_cur = cur;
-
- if ( values != NULL && count >= max_values )
- break;
-
- /* call PS_Conv_ToFixed() even if coords == NULL */
- /* to properly parse number at `cur' */
- *( values != NULL ? &values[count] : &dummy ) =
- PS_Conv_ToFixed( &cur, limit, power_ten );
-
- if ( old_cur == cur )
- {
- count = -1;
- goto Exit;
- }
- else
- count++;
-
- if ( !ender )
- break;
- }
-
- Exit:
- *acur = cur;
- return count;
- }
-
-
-#if 0
-
- static FT_String*
- ps_tostring( FT_Byte** cursor,
- FT_Byte* limit,
- FT_Memory memory )
- {
- FT_Byte* cur = *cursor;
- FT_UInt len = 0;
- FT_Int count;
- FT_String* result;
- FT_Error error;
-
-
- /* XXX: some stupid fonts have a `Notice' or `Copyright' string */
- /* that simply doesn't begin with an opening parenthesis, even */
- /* though they have a closing one! E.g. "amuncial.pfb" */
- /* */
- /* We must deal with these ill-fated cases there. Note that */
- /* these fonts didn't work with the old Type 1 driver as the */
- /* notice/copyright was not recognized as a valid string token */
- /* and made the old token parser commit errors. */
-
- while ( cur < limit && ( *cur == ' ' || *cur == '\t' ) )
- cur++;
- if ( cur + 1 >= limit )
- return 0;
-
- if ( *cur == '(' )
- cur++; /* skip the opening parenthesis, if there is one */
-
- *cursor = cur;
- count = 0;
-
- /* then, count its length */
- for ( ; cur < limit; cur++ )
- {
- if ( *cur == '(' )
- count++;
-
- else if ( *cur == ')' )
- {
- count--;
- if ( count < 0 )
- break;
- }
- }
-
- len = (FT_UInt)( cur - *cursor );
- if ( cur >= limit || FT_ALLOC( result, len + 1 ) )
- return 0;
-
- /* now copy the string */
- FT_MEM_COPY( result, *cursor, len );
- result[len] = '\0';
- *cursor = cur;
- return result;
- }
-
-#endif /* 0 */
-
-
- static int
- ps_tobool( FT_Byte* *acur,
- FT_Byte* limit )
- {
- FT_Byte* cur = *acur;
- FT_Bool result = 0;
-
-
- /* return 1 if we find `true', 0 otherwise */
- if ( cur + 3 < limit &&
- cur[0] == 't' &&
- cur[1] == 'r' &&
- cur[2] == 'u' &&
- cur[3] == 'e' )
- {
- result = 1;
- cur += 5;
- }
- else if ( cur + 4 < limit &&
- cur[0] == 'f' &&
- cur[1] == 'a' &&
- cur[2] == 'l' &&
- cur[3] == 's' &&
- cur[4] == 'e' )
- {
- result = 0;
- cur += 6;
- }
-
- *acur = cur;
- return result;
- }
-
-
- /* load a simple field (i.e. non-table) into the current list of objects */
-
- FT_LOCAL_DEF( FT_Error )
- ps_parser_load_field( PS_Parser parser,
- const T1_Field field,
- void** objects,
- FT_UInt max_objects,
- FT_ULong* pflags )
- {
- T1_TokenRec token;
- FT_Byte* cur;
- FT_Byte* limit;
- FT_UInt count;
- FT_UInt idx;
- FT_Error error;
- T1_FieldType type;
-
-
- /* this also skips leading whitespace */
- ps_parser_to_token( parser, &token );
- if ( !token.type )
- goto Fail;
-
- count = 1;
- idx = 0;
- cur = token.start;
- limit = token.limit;
-
- type = field->type;
-
- /* we must detect arrays in /FontBBox */
- if ( type == T1_FIELD_TYPE_BBOX )
- {
- T1_TokenRec token2;
- FT_Byte* old_cur = parser->cursor;
- FT_Byte* old_limit = parser->limit;
-
-
- /* don't include delimiters */
- parser->cursor = token.start + 1;
- parser->limit = token.limit - 1;
-
- ps_parser_to_token( parser, &token2 );
- parser->cursor = old_cur;
- parser->limit = old_limit;
-
- if ( token2.type == T1_TOKEN_TYPE_ARRAY )
- {
- type = T1_FIELD_TYPE_MM_BBOX;
- goto FieldArray;
- }
- }
- else if ( token.type == T1_TOKEN_TYPE_ARRAY )
- {
- count = max_objects;
-
- FieldArray:
- /* if this is an array and we have no blend, an error occurs */
- if ( max_objects == 0 )
- goto Fail;
-
- idx = 1;
-
- /* don't include delimiters */
- cur++;
- limit--;
- }
-
- for ( ; count > 0; count--, idx++ )
- {
- FT_Byte* q = (FT_Byte*)objects[idx] + field->offset;
- FT_Long val;
- FT_String* string;
-
-
- skip_spaces( &cur, limit );
-
- switch ( type )
- {
- case T1_FIELD_TYPE_BOOL:
- val = ps_tobool( &cur, limit );
- goto Store_Integer;
-
- case T1_FIELD_TYPE_FIXED:
- val = PS_Conv_ToFixed( &cur, limit, 0 );
- goto Store_Integer;
-
- case T1_FIELD_TYPE_FIXED_1000:
- val = PS_Conv_ToFixed( &cur, limit, 3 );
- goto Store_Integer;
-
- case T1_FIELD_TYPE_INTEGER:
- val = PS_Conv_ToInt( &cur, limit );
- /* fall through */
-
- Store_Integer:
- switch ( field->size )
- {
- case (8 / FT_CHAR_BIT):
- *(FT_Byte*)q = (FT_Byte)val;
- break;
-
- case (16 / FT_CHAR_BIT):
- *(FT_UShort*)q = (FT_UShort)val;
- break;
-
- case (32 / FT_CHAR_BIT):
- *(FT_UInt32*)q = (FT_UInt32)val;
- break;
-
- default: /* for 64-bit systems */
- *(FT_Long*)q = val;
- }
- break;
-
- case T1_FIELD_TYPE_STRING:
- case T1_FIELD_TYPE_KEY:
- {
- FT_Memory memory = parser->memory;
- FT_UInt len = (FT_UInt)( limit - cur );
-
-
- if ( cur >= limit )
- break;
-
- /* we allow both a string or a name */
- /* for cases like /FontName (foo) def */
- if ( token.type == T1_TOKEN_TYPE_KEY )
- {
- /* don't include leading `/' */
- len--;
- cur++;
- }
- else if ( token.type == T1_TOKEN_TYPE_STRING )
- {
- /* don't include delimiting parentheses */
- /* XXX we don't handle <<...>> here */
- /* XXX should we convert octal escapes? */
- /* if so, what encoding should we use? */
- cur++;
- len -= 2;
- }
- else
- {
- FT_ERROR(( "ps_parser_load_field:"
- " expected a name or string\n"
- " "
- " but found token of type %d instead\n",
- token.type ));
- error = FT_THROW( Invalid_File_Format );
- goto Exit;
- }
-
- /* for this to work (FT_String**)q must have been */
- /* initialized to NULL */
- if ( *(FT_String**)q != NULL )
- {
- FT_TRACE0(( "ps_parser_load_field: overwriting field %s\n",
- field->ident ));
- FT_FREE( *(FT_String**)q );
- *(FT_String**)q = NULL;
- }
-
- if ( FT_ALLOC( string, len + 1 ) )
- goto Exit;
-
- FT_MEM_COPY( string, cur, len );
- string[len] = 0;
-
- *(FT_String**)q = string;
- }
- break;
-
- case T1_FIELD_TYPE_BBOX:
- {
- FT_Fixed temp[4];
- FT_BBox* bbox = (FT_BBox*)q;
- FT_Int result;
-
-
- result = ps_tofixedarray( &cur, limit, 4, temp, 0 );
-
- if ( result < 4 )
- {
- FT_ERROR(( "ps_parser_load_field:"
- " expected four integers in bounding box\n" ));
- error = FT_THROW( Invalid_File_Format );
- goto Exit;
- }
-
- bbox->xMin = FT_RoundFix( temp[0] );
- bbox->yMin = FT_RoundFix( temp[1] );
- bbox->xMax = FT_RoundFix( temp[2] );
- bbox->yMax = FT_RoundFix( temp[3] );
- }
- break;
-
- case T1_FIELD_TYPE_MM_BBOX:
- {
- FT_Memory memory = parser->memory;
- FT_Fixed* temp;
- FT_Int result;
- FT_UInt i;
-
-
- if ( FT_NEW_ARRAY( temp, max_objects * 4 ) )
- goto Exit;
-
- for ( i = 0; i < 4; i++ )
- {
- result = ps_tofixedarray( &cur, limit, (FT_Int)max_objects,
- temp + i * max_objects, 0 );
- if ( result < 0 || (FT_UInt)result < max_objects )
- {
- FT_ERROR(( "ps_parser_load_field:"
- " expected %d integer%s in the %s subarray\n"
- " "
- " of /FontBBox in the /Blend dictionary\n",
- max_objects, max_objects > 1 ? "s" : "",
- i == 0 ? "first"
- : ( i == 1 ? "second"
- : ( i == 2 ? "third"
- : "fourth" ) ) ));
- error = FT_THROW( Invalid_File_Format );
-
- FT_FREE( temp );
- goto Exit;
- }
-
- skip_spaces( &cur, limit );
- }
-
- for ( i = 0; i < max_objects; i++ )
- {
- FT_BBox* bbox = (FT_BBox*)objects[i];
-
-
- bbox->xMin = FT_RoundFix( temp[i ] );
- bbox->yMin = FT_RoundFix( temp[i + max_objects] );
- bbox->xMax = FT_RoundFix( temp[i + 2 * max_objects] );
- bbox->yMax = FT_RoundFix( temp[i + 3 * max_objects] );
- }
-
- FT_FREE( temp );
- }
- break;
-
- default:
- /* an error occurred */
- goto Fail;
- }
- }
-
-#if 0 /* obsolete -- keep for reference */
- if ( pflags )
- *pflags |= 1L << field->flag_bit;
-#else
- FT_UNUSED( pflags );
-#endif
-
- error = FT_Err_Ok;
-
- Exit:
- return error;
-
- Fail:
- error = FT_THROW( Invalid_File_Format );
- goto Exit;
- }
-
-
-#define T1_MAX_TABLE_ELEMENTS 32
-
-
- FT_LOCAL_DEF( FT_Error )
- ps_parser_load_field_table( PS_Parser parser,
- const T1_Field field,
- void** objects,
- FT_UInt max_objects,
- FT_ULong* pflags )
- {
- T1_TokenRec elements[T1_MAX_TABLE_ELEMENTS];
- T1_Token token;
- FT_Int num_elements;
- FT_Error error = FT_Err_Ok;
- FT_Byte* old_cursor;
- FT_Byte* old_limit;
- T1_FieldRec fieldrec = *(T1_Field)field;
-
-
- fieldrec.type = T1_FIELD_TYPE_INTEGER;
- if ( field->type == T1_FIELD_TYPE_FIXED_ARRAY ||
- field->type == T1_FIELD_TYPE_BBOX )
- fieldrec.type = T1_FIELD_TYPE_FIXED;
-
- ps_parser_to_token_array( parser, elements,
- T1_MAX_TABLE_ELEMENTS, &num_elements );
- if ( num_elements < 0 )
- {
- error = FT_ERR( Ignore );
- goto Exit;
- }
- if ( (FT_UInt)num_elements > field->array_max )
- num_elements = (FT_Int)field->array_max;
-
- old_cursor = parser->cursor;
- old_limit = parser->limit;
-
- /* we store the elements count if necessary; */
- /* we further assume that `count_offset' can't be zero */
- if ( field->type != T1_FIELD_TYPE_BBOX && field->count_offset != 0 )
- *(FT_Byte*)( (FT_Byte*)objects[0] + field->count_offset ) =
- (FT_Byte)num_elements;
-
- /* we now load each element, adjusting the field.offset on each one */
- token = elements;
- for ( ; num_elements > 0; num_elements--, token++ )
- {
- parser->cursor = token->start;
- parser->limit = token->limit;
-
- error = ps_parser_load_field( parser,
- &fieldrec,
- objects,
- max_objects,
- 0 );
- if ( error )
- break;
-
- fieldrec.offset += fieldrec.size;
- }
-
-#if 0 /* obsolete -- keep for reference */
- if ( pflags )
- *pflags |= 1L << field->flag_bit;
-#else
- FT_UNUSED( pflags );
-#endif
-
- parser->cursor = old_cursor;
- parser->limit = old_limit;
-
- Exit:
- return error;
- }
-
-
- FT_LOCAL_DEF( FT_Long )
- ps_parser_to_int( PS_Parser parser )
- {
- ps_parser_skip_spaces( parser );
- return PS_Conv_ToInt( &parser->cursor, parser->limit );
- }
-
-
- /* first character must be `<' if `delimiters' is non-zero */
-
- FT_LOCAL_DEF( FT_Error )
- ps_parser_to_bytes( PS_Parser parser,
- FT_Byte* bytes,
- FT_Offset max_bytes,
- FT_ULong* pnum_bytes,
- FT_Bool delimiters )
- {
- FT_Error error = FT_Err_Ok;
- FT_Byte* cur;
-
-
- ps_parser_skip_spaces( parser );
- cur = parser->cursor;
-
- if ( cur >= parser->limit )
- goto Exit;
-
- if ( delimiters )
- {
- if ( *cur != '<' )
- {
- FT_ERROR(( "ps_parser_to_bytes: Missing starting delimiter `<'\n" ));
- error = FT_THROW( Invalid_File_Format );
- goto Exit;
- }
-
- cur++;
- }
-
- *pnum_bytes = PS_Conv_ASCIIHexDecode( &cur,
- parser->limit,
- bytes,
- max_bytes );
-
- if ( delimiters )
- {
- if ( cur < parser->limit && *cur != '>' )
- {
- FT_ERROR(( "ps_parser_to_bytes: Missing closing delimiter `>'\n" ));
- error = FT_THROW( Invalid_File_Format );
- goto Exit;
- }
-
- cur++;
- }
-
- parser->cursor = cur;
-
- Exit:
- return error;
- }
-
-
- FT_LOCAL_DEF( FT_Fixed )
- ps_parser_to_fixed( PS_Parser parser,
- FT_Int power_ten )
- {
- ps_parser_skip_spaces( parser );
- return PS_Conv_ToFixed( &parser->cursor, parser->limit, power_ten );
- }
-
-
- FT_LOCAL_DEF( FT_Int )
- ps_parser_to_coord_array( PS_Parser parser,
- FT_Int max_coords,
- FT_Short* coords )
- {
- ps_parser_skip_spaces( parser );
- return ps_tocoordarray( &parser->cursor, parser->limit,
- max_coords, coords );
- }
-
-
- FT_LOCAL_DEF( FT_Int )
- ps_parser_to_fixed_array( PS_Parser parser,
- FT_Int max_values,
- FT_Fixed* values,
- FT_Int power_ten )
- {
- ps_parser_skip_spaces( parser );
- return ps_tofixedarray( &parser->cursor, parser->limit,
- max_values, values, power_ten );
- }
-
-
-#if 0
-
- FT_LOCAL_DEF( FT_String* )
- T1_ToString( PS_Parser parser )
- {
- return ps_tostring( &parser->cursor, parser->limit, parser->memory );
- }
-
-
- FT_LOCAL_DEF( FT_Bool )
- T1_ToBool( PS_Parser parser )
- {
- return ps_tobool( &parser->cursor, parser->limit );
- }
-
-#endif /* 0 */
-
-
- FT_LOCAL_DEF( void )
- ps_parser_init( PS_Parser parser,
- FT_Byte* base,
- FT_Byte* limit,
- FT_Memory memory )
- {
- parser->error = FT_Err_Ok;
- parser->base = base;
- parser->limit = limit;
- parser->cursor = base;
- parser->memory = memory;
- parser->funcs = ps_parser_funcs;
- }
-
-
- FT_LOCAL_DEF( void )
- ps_parser_done( PS_Parser parser )
- {
- FT_UNUSED( parser );
- }
-
-
- /*************************************************************************/
- /*************************************************************************/
- /***** *****/
- /***** T1 BUILDER *****/
- /***** *****/
- /*************************************************************************/
- /*************************************************************************/
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* t1_builder_init */
- /* */
- /* <Description> */
- /* Initializes a given glyph builder. */
- /* */
- /* <InOut> */
- /* builder :: A pointer to the glyph builder to initialize. */
- /* */
- /* <Input> */
- /* face :: The current face object. */
- /* */
- /* size :: The current size object. */
- /* */
- /* glyph :: The current glyph object. */
- /* */
- /* hinting :: Whether hinting should be applied. */
- /* */
- FT_LOCAL_DEF( void )
- t1_builder_init( T1_Builder builder,
- FT_Face face,
- FT_Size size,
- FT_GlyphSlot glyph,
- FT_Bool hinting )
- {
- builder->parse_state = T1_Parse_Start;
- builder->load_points = 1;
-
- builder->face = face;
- builder->glyph = glyph;
- builder->memory = face->memory;
-
- if ( glyph )
- {
- FT_GlyphLoader loader = glyph->internal->loader;
-
-
- builder->loader = loader;
- builder->base = &loader->base.outline;
- builder->current = &loader->current.outline;
- FT_GlyphLoader_Rewind( loader );
-
- builder->hints_globals = size->internal;
- builder->hints_funcs = NULL;
-
- if ( hinting )
- builder->hints_funcs = glyph->internal->glyph_hints;
- }
-
- builder->pos_x = 0;
- builder->pos_y = 0;
-
- builder->left_bearing.x = 0;
- builder->left_bearing.y = 0;
- builder->advance.x = 0;
- builder->advance.y = 0;
-
- builder->funcs = t1_builder_funcs;
- }
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* t1_builder_done */
- /* */
- /* <Description> */
- /* Finalizes a given glyph builder. Its contents can still be used */
- /* after the call, but the function saves important information */
- /* within the corresponding glyph slot. */
- /* */
- /* <Input> */
- /* builder :: A pointer to the glyph builder to finalize. */
- /* */
- FT_LOCAL_DEF( void )
- t1_builder_done( T1_Builder builder )
- {
- FT_GlyphSlot glyph = builder->glyph;
-
-
- if ( glyph )
- glyph->outline = *builder->base;
- }
-
-
- /* check that there is enough space for `count' more points */
- FT_LOCAL_DEF( FT_Error )
- t1_builder_check_points( T1_Builder builder,
- FT_Int count )
- {
- return FT_GLYPHLOADER_CHECK_POINTS( builder->loader, count, 0 );
- }
-
-
- /* add a new point, do not check space */
- FT_LOCAL_DEF( void )
- t1_builder_add_point( T1_Builder builder,
- FT_Pos x,
- FT_Pos y,
- FT_Byte flag )
- {
- FT_Outline* outline = builder->current;
-
-
- if ( builder->load_points )
- {
- FT_Vector* point = outline->points + outline->n_points;
- FT_Byte* control = (FT_Byte*)outline->tags + outline->n_points;
-
-
- point->x = FIXED_TO_INT( x );
- point->y = FIXED_TO_INT( y );
- *control = (FT_Byte)( flag ? FT_CURVE_TAG_ON : FT_CURVE_TAG_CUBIC );
- }
- outline->n_points++;
- }
-
-
- /* check space for a new on-curve point, then add it */
- FT_LOCAL_DEF( FT_Error )
- t1_builder_add_point1( T1_Builder builder,
- FT_Pos x,
- FT_Pos y )
- {
- FT_Error error;
-
-
- error = t1_builder_check_points( builder, 1 );
- if ( !error )
- t1_builder_add_point( builder, x, y, 1 );
-
- return error;
- }
-
-
- /* check space for a new contour, then add it */
- FT_LOCAL_DEF( FT_Error )
- t1_builder_add_contour( T1_Builder builder )
- {
- FT_Outline* outline = builder->current;
- FT_Error error;
-
-
- /* this might happen in invalid fonts */
- if ( !outline )
- {
- FT_ERROR(( "t1_builder_add_contour: no outline to add points to\n" ));
- return FT_THROW( Invalid_File_Format );
- }
-
- if ( !builder->load_points )
- {
- outline->n_contours++;
- return FT_Err_Ok;
- }
-
- error = FT_GLYPHLOADER_CHECK_POINTS( builder->loader, 0, 1 );
- if ( !error )
- {
- if ( outline->n_contours > 0 )
- outline->contours[outline->n_contours - 1] =
- (short)( outline->n_points - 1 );
-
- outline->n_contours++;
- }
-
- return error;
- }
-
-
- /* if a path was begun, add its first on-curve point */
- FT_LOCAL_DEF( FT_Error )
- t1_builder_start_point( T1_Builder builder,
- FT_Pos x,
- FT_Pos y )
- {
- FT_Error error = FT_ERR( Invalid_File_Format );
-
-
- /* test whether we are building a new contour */
-
- if ( builder->parse_state == T1_Parse_Have_Path )
- error = FT_Err_Ok;
- else
- {
- builder->parse_state = T1_Parse_Have_Path;
- error = t1_builder_add_contour( builder );
- if ( !error )
- error = t1_builder_add_point1( builder, x, y );
- }
-
- return error;
- }
-
-
- /* close the current contour */
- FT_LOCAL_DEF( void )
- t1_builder_close_contour( T1_Builder builder )
- {
- FT_Outline* outline = builder->current;
- FT_Int first;
-
-
- if ( !outline )
- return;
-
- first = outline->n_contours <= 1
- ? 0 : outline->contours[outline->n_contours - 2] + 1;
-
- /* We must not include the last point in the path if it */
- /* is located on the first point. */
- if ( outline->n_points > 1 )
- {
- FT_Vector* p1 = outline->points + first;
- FT_Vector* p2 = outline->points + outline->n_points - 1;
- FT_Byte* control = (FT_Byte*)outline->tags + outline->n_points - 1;
-
-
- /* `delete' last point only if it coincides with the first */
- /* point and it is not a control point (which can happen). */
- if ( p1->x == p2->x && p1->y == p2->y )
- if ( *control == FT_CURVE_TAG_ON )
- outline->n_points--;
- }
-
- if ( outline->n_contours > 0 )
- {
- /* Don't add contours only consisting of one point, i.e., */
- /* check whether the first and the last point is the same. */
- if ( first == outline->n_points - 1 )
- {
- outline->n_contours--;
- outline->n_points--;
- }
- else
- outline->contours[outline->n_contours - 1] =
- (short)( outline->n_points - 1 );
- }
- }
-
-
- /*************************************************************************/
- /*************************************************************************/
- /***** *****/
- /***** OTHER *****/
- /***** *****/
- /*************************************************************************/
- /*************************************************************************/
-
- FT_LOCAL_DEF( void )
- t1_decrypt( FT_Byte* buffer,
- FT_Offset length,
- FT_UShort seed )
- {
- PS_Conv_EexecDecode( &buffer,
- buffer + length,
- buffer,
- length,
- &seed );
- }
-
-
-/* END */
projects / reactos.git / blobdiff