5172
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1 |
/***************************************************************************/
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2 |
/* */
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3 |
/* psobjs.c */
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4 |
/* */
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5 |
/* Auxiliary functions for PostScript fonts (body). */
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6 |
/* */
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7 |
/* Copyright 1996-2011 by */
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/* David Turner, Robert Wilhelm, and Werner Lemberg. */
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9 |
/* */
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/* This file is part of the FreeType project, and may only be used, */
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11 |
/* modified, and distributed under the terms of the FreeType project */
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/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
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/* this file you indicate that you have read the license and */
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/* understand and accept it fully. */
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/* */
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/***************************************************************************/
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19 |
#include <ft2build.h>
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20 |
#include FT_INTERNAL_POSTSCRIPT_AUX_H
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21 |
#include FT_INTERNAL_DEBUG_H
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22 |
#include FT_INTERNAL_CALC_H
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23 |
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24 |
#include "psobjs.h"
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25 |
#include "psconv.h"
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26 |
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27 |
#include "psauxerr.h"
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29 |
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30 |
/*************************************************************************/
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31 |
/* */
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32 |
/* The macro FT_COMPONENT is used in trace mode. It is an implicit */
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33 |
/* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
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34 |
/* messages during execution. */
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35 |
/* */
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#undef FT_COMPONENT
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#define FT_COMPONENT trace_psobjs
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40 |
/*************************************************************************/
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/*************************************************************************/
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42 |
/***** *****/
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/***** PS_TABLE *****/
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44 |
/***** *****/
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45 |
/*************************************************************************/
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/*************************************************************************/
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48 |
/*************************************************************************/
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49 |
/* */
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50 |
/* <Function> */
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51 |
/* ps_table_new */
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52 |
/* */
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53 |
/* <Description> */
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54 |
/* Initializes a PS_Table. */
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55 |
/* */
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56 |
/* <InOut> */
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57 |
/* table :: The address of the target table. */
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/* */
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59 |
/* <Input> */
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60 |
/* count :: The table size = the maximum number of elements. */
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/* */
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62 |
/* memory :: The memory object to use for all subsequent */
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63 |
/* reallocations. */
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/* */
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65 |
/* <Return> */
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66 |
/* FreeType error code. 0 means success. */
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67 |
/* */
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68 |
FT_LOCAL_DEF( FT_Error )
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69 |
ps_table_new( PS_Table table,
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FT_Int count,
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71 |
FT_Memory memory )
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{
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FT_Error error;
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74 |
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75 |
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table->memory = memory;
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if ( FT_NEW_ARRAY( table->elements, count ) ||
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78 |
FT_NEW_ARRAY( table->lengths, count ) )
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goto Exit;
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80 |
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table->max_elems = count;
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82 |
table->init = 0xDEADBEEFUL;
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table->num_elems = 0;
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table->block = 0;
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table->capacity = 0;
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table->cursor = 0;
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87 |
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88 |
*(PS_Table_FuncsRec*)&table->funcs = ps_table_funcs;
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89 |
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90 |
Exit:
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91 |
if ( error )
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92 |
FT_FREE( table->elements );
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93 |
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return error;
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}
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97 |
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static void
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shift_elements( PS_Table table,
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FT_Byte* old_base )
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{
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FT_PtrDist delta = table->block - old_base;
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FT_Byte** offset = table->elements;
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FT_Byte** limit = offset + table->max_elems;
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for ( ; offset < limit; offset++ )
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{
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if ( offset[0] )
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offset[0] += delta;
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}
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}
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113 |
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114 |
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static FT_Error
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reallocate_t1_table( PS_Table table,
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117 |
FT_Long new_size )
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118 |
{
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FT_Memory memory = table->memory;
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120 |
FT_Byte* old_base = table->block;
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FT_Error error;
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122 |
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123 |
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/* allocate new base block */
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125 |
if ( FT_ALLOC( table->block, new_size ) )
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{
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table->block = old_base;
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return error;
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}
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130 |
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/* copy elements and shift offsets */
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if ( old_base )
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{
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FT_MEM_COPY( table->block, old_base, table->capacity );
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shift_elements( table, old_base );
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FT_FREE( old_base );
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}
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138 |
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table->capacity = new_size;
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140 |
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return PSaux_Err_Ok;
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}
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/*************************************************************************/
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/* */
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/* <Function> */
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148 |
/* ps_table_add */
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/* */
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/* <Description> */
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/* Adds an object to a PS_Table, possibly growing its memory block. */
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/* */
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/* <InOut> */
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/* table :: The target table. */
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/* */
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/* <Input> */
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157 |
/* idx :: The index of the object in the table. */
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/* */
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159 |
/* object :: The address of the object to copy in memory. */
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160 |
/* */
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161 |
/* length :: The length in bytes of the source object. */
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/* */
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163 |
/* <Return> */
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164 |
/* FreeType error code. 0 means success. An error is returned if a */
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/* reallocation fails. */
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/* */
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167 |
FT_LOCAL_DEF( FT_Error )
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168 |
ps_table_add( PS_Table table,
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169 |
FT_Int idx,
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170 |
void* object,
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171 |
FT_PtrDist length )
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172 |
{
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173 |
if ( idx < 0 || idx >= table->max_elems )
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174 |
{
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175 |
FT_ERROR(( "ps_table_add: invalid index\n" ));
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176 |
return PSaux_Err_Invalid_Argument;
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177 |
}
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178 |
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179 |
if ( length < 0 )
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180 |
{
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181 |
FT_ERROR(( "ps_table_add: invalid length\n" ));
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182 |
return PSaux_Err_Invalid_Argument;
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183 |
}
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184 |
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185 |
/* grow the base block if needed */
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186 |
if ( table->cursor + length > table->capacity )
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187 |
{
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188 |
FT_Error error;
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189 |
FT_Offset new_size = table->capacity;
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190 |
FT_PtrDist in_offset;
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191 |
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192 |
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193 |
in_offset = (FT_Byte*)object - table->block;
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194 |
if ( in_offset < 0 || (FT_Offset)in_offset >= table->capacity )
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195 |
in_offset = -1;
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196 |
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197 |
while ( new_size < table->cursor + length )
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|
198 |
{
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|
199 |
/* increase size by 25% and round up to the nearest multiple
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200 |
of 1024 */
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201 |
new_size += ( new_size >> 2 ) + 1;
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202 |
new_size = FT_PAD_CEIL( new_size, 1024 );
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203 |
}
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204 |
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205 |
error = reallocate_t1_table( table, new_size );
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206 |
if ( error )
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207 |
return error;
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208 |
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|
209 |
if ( in_offset >= 0 )
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210 |
object = table->block + in_offset;
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|
211 |
}
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212 |
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213 |
/* add the object to the base block and adjust offset */
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214 |
table->elements[idx] = table->block + table->cursor;
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215 |
table->lengths [idx] = length;
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216 |
FT_MEM_COPY( table->block + table->cursor, object, length );
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217 |
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218 |
table->cursor += length;
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219 |
return PSaux_Err_Ok;
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220 |
}
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221 |
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222 |
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223 |
/*************************************************************************/
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224 |
/* */
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225 |
/* <Function> */
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226 |
/* ps_table_done */
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227 |
/* */
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228 |
/* <Description> */
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229 |
/* Finalizes a PS_TableRec (i.e., reallocate it to its current */
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230 |
/* cursor). */
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231 |
/* */
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232 |
/* <InOut> */
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233 |
/* table :: The target table. */
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234 |
/* */
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235 |
/* <Note> */
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236 |
/* This function does NOT release the heap's memory block. It is up */
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237 |
/* to the caller to clean it, or reference it in its own structures. */
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238 |
/* */
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239 |
FT_LOCAL_DEF( void )
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240 |
ps_table_done( PS_Table table )
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241 |
{
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|
242 |
FT_Memory memory = table->memory;
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243 |
FT_Error error;
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|
244 |
FT_Byte* old_base = table->block;
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245 |
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246 |
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247 |
/* should never fail, because rec.cursor <= rec.size */
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248 |
if ( !old_base )
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249 |
return;
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250 |
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251 |
if ( FT_ALLOC( table->block, table->cursor ) )
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252 |
return;
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253 |
FT_MEM_COPY( table->block, old_base, table->cursor );
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254 |
shift_elements( table, old_base );
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255 |
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256 |
table->capacity = table->cursor;
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257 |
FT_FREE( old_base );
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258 |
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259 |
FT_UNUSED( error );
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260 |
}
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261 |
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262 |
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263 |
FT_LOCAL_DEF( void )
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264 |
ps_table_release( PS_Table table )
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|
265 |
{
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|
266 |
FT_Memory memory = table->memory;
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267 |
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268 |
|
|
269 |
if ( (FT_ULong)table->init == 0xDEADBEEFUL )
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|
270 |
{
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|
271 |
FT_FREE( table->block );
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|
272 |
FT_FREE( table->elements );
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|
273 |
FT_FREE( table->lengths );
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|
274 |
table->init = 0;
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|
275 |
}
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|
276 |
}
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|
277 |
|
|
278 |
|
|
279 |
/*************************************************************************/
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|
280 |
/*************************************************************************/
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|
281 |
/***** *****/
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282 |
/***** T1 PARSER *****/
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283 |
/***** *****/
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284 |
/*************************************************************************/
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|
285 |
/*************************************************************************/
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286 |
|
|
287 |
|
|
288 |
/* first character must be already part of the comment */
|
|
289 |
|
|
290 |
static void
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|
291 |
skip_comment( FT_Byte* *acur,
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|
292 |
FT_Byte* limit )
|
|
293 |
{
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|
294 |
FT_Byte* cur = *acur;
|
|
295 |
|
|
296 |
|
|
297 |
while ( cur < limit )
|
|
298 |
{
|
|
299 |
if ( IS_PS_NEWLINE( *cur ) )
|
|
300 |
break;
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|
301 |
cur++;
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|
302 |
}
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|
303 |
|
|
304 |
*acur = cur;
|
|
305 |
}
|
|
306 |
|
|
307 |
|
|
308 |
static void
|
|
309 |
skip_spaces( FT_Byte* *acur,
|
|
310 |
FT_Byte* limit )
|
|
311 |
{
|
|
312 |
FT_Byte* cur = *acur;
|
|
313 |
|
|
314 |
|
|
315 |
while ( cur < limit )
|
|
316 |
{
|
|
317 |
if ( !IS_PS_SPACE( *cur ) )
|
|
318 |
{
|
|
319 |
if ( *cur == '%' )
|
|
320 |
/* According to the PLRM, a comment is equal to a space. */
|
|
321 |
skip_comment( &cur, limit );
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|
322 |
else
|
|
323 |
break;
|
|
324 |
}
|
|
325 |
cur++;
|
|
326 |
}
|
|
327 |
|
|
328 |
*acur = cur;
|
|
329 |
}
|
|
330 |
|
|
331 |
|
|
332 |
#define IS_OCTAL_DIGIT( c ) ( '0' <= (c) && (c) <= '7' )
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|
333 |
|
|
334 |
|
|
335 |
/* first character must be `('; */
|
|
336 |
/* *acur is positioned at the character after the closing `)' */
|
|
337 |
|
|
338 |
static FT_Error
|
|
339 |
skip_literal_string( FT_Byte* *acur,
|
|
340 |
FT_Byte* limit )
|
|
341 |
{
|
|
342 |
FT_Byte* cur = *acur;
|
|
343 |
FT_Int embed = 0;
|
|
344 |
FT_Error error = PSaux_Err_Invalid_File_Format;
|
|
345 |
unsigned int i;
|
|
346 |
|
|
347 |
|
|
348 |
while ( cur < limit )
|
|
349 |
{
|
|
350 |
FT_Byte c = *cur;
|
|
351 |
|
|
352 |
|
|
353 |
++cur;
|
|
354 |
|
|
355 |
if ( c == '\\' )
|
|
356 |
{
|
|
357 |
/* Red Book 3rd ed., section `Literal Text Strings', p. 29: */
|
|
358 |
/* A backslash can introduce three different types */
|
|
359 |
/* of escape sequences: */
|
|
360 |
/* - a special escaped char like \r, \n, etc. */
|
|
361 |
/* - a one-, two-, or three-digit octal number */
|
|
362 |
/* - none of the above in which case the backslash is ignored */
|
|
363 |
|
|
364 |
if ( cur == limit )
|
|
365 |
/* error (or to be ignored?) */
|
|
366 |
break;
|
|
367 |
|
|
368 |
switch ( *cur )
|
|
369 |
{
|
|
370 |
/* skip `special' escape */
|
|
371 |
case 'n':
|
|
372 |
case 'r':
|
|
373 |
case 't':
|
|
374 |
case 'b':
|
|
375 |
case 'f':
|
|
376 |
case '\\':
|
|
377 |
case '(':
|
|
378 |
case ')':
|
|
379 |
++cur;
|
|
380 |
break;
|
|
381 |
|
|
382 |
default:
|
|
383 |
/* skip octal escape or ignore backslash */
|
|
384 |
for ( i = 0; i < 3 && cur < limit; ++i )
|
|
385 |
{
|
|
386 |
if ( !IS_OCTAL_DIGIT( *cur ) )
|
|
387 |
break;
|
|
388 |
|
|
389 |
++cur;
|
|
390 |
}
|
|
391 |
}
|
|
392 |
}
|
|
393 |
else if ( c == '(' )
|
|
394 |
embed++;
|
|
395 |
else if ( c == ')' )
|
|
396 |
{
|
|
397 |
embed--;
|
|
398 |
if ( embed == 0 )
|
|
399 |
{
|
|
400 |
error = PSaux_Err_Ok;
|
|
401 |
break;
|
|
402 |
}
|
|
403 |
}
|
|
404 |
}
|
|
405 |
|
|
406 |
*acur = cur;
|
|
407 |
|
|
408 |
return error;
|
|
409 |
}
|
|
410 |
|
|
411 |
|
|
412 |
/* first character must be `<' */
|
|
413 |
|
|
414 |
static FT_Error
|
|
415 |
skip_string( FT_Byte* *acur,
|
|
416 |
FT_Byte* limit )
|
|
417 |
{
|
|
418 |
FT_Byte* cur = *acur;
|
|
419 |
FT_Error err = PSaux_Err_Ok;
|
|
420 |
|
|
421 |
|
|
422 |
while ( ++cur < limit )
|
|
423 |
{
|
|
424 |
/* All whitespace characters are ignored. */
|
|
425 |
skip_spaces( &cur, limit );
|
|
426 |
if ( cur >= limit )
|
|
427 |
break;
|
|
428 |
|
|
429 |
if ( !IS_PS_XDIGIT( *cur ) )
|
|
430 |
break;
|
|
431 |
}
|
|
432 |
|
|
433 |
if ( cur < limit && *cur != '>' )
|
|
434 |
{
|
|
435 |
FT_ERROR(( "skip_string: missing closing delimiter `>'\n" ));
|
|
436 |
err = PSaux_Err_Invalid_File_Format;
|
|
437 |
}
|
|
438 |
else
|
|
439 |
cur++;
|
|
440 |
|
|
441 |
*acur = cur;
|
|
442 |
return err;
|
|
443 |
}
|
|
444 |
|
|
445 |
|
|
446 |
/* first character must be the opening brace that */
|
|
447 |
/* starts the procedure */
|
|
448 |
|
|
449 |
/* NB: [ and ] need not match: */
|
|
450 |
/* `/foo {[} def' is a valid PostScript fragment, */
|
|
451 |
/* even within a Type1 font */
|
|
452 |
|
|
453 |
static FT_Error
|
|
454 |
skip_procedure( FT_Byte* *acur,
|
|
455 |
FT_Byte* limit )
|
|
456 |
{
|
|
457 |
FT_Byte* cur;
|
|
458 |
FT_Int embed = 0;
|
|
459 |
FT_Error error = PSaux_Err_Ok;
|
|
460 |
|
|
461 |
|
|
462 |
FT_ASSERT( **acur == '{' );
|
|
463 |
|
|
464 |
for ( cur = *acur; cur < limit && error == PSaux_Err_Ok; ++cur )
|
|
465 |
{
|
|
466 |
switch ( *cur )
|
|
467 |
{
|
|
468 |
case '{':
|
|
469 |
++embed;
|
|
470 |
break;
|
|
471 |
|
|
472 |
case '}':
|
|
473 |
--embed;
|
|
474 |
if ( embed == 0 )
|
|
475 |
{
|
|
476 |
++cur;
|
|
477 |
goto end;
|
|
478 |
}
|
|
479 |
break;
|
|
480 |
|
|
481 |
case '(':
|
|
482 |
error = skip_literal_string( &cur, limit );
|
|
483 |
break;
|
|
484 |
|
|
485 |
case '<':
|
|
486 |
error = skip_string( &cur, limit );
|
|
487 |
break;
|
|
488 |
|
|
489 |
case '%':
|
|
490 |
skip_comment( &cur, limit );
|
|
491 |
break;
|
|
492 |
}
|
|
493 |
}
|
|
494 |
|
|
495 |
end:
|
|
496 |
if ( embed != 0 )
|
|
497 |
error = PSaux_Err_Invalid_File_Format;
|
|
498 |
|
|
499 |
*acur = cur;
|
|
500 |
|
|
501 |
return error;
|
|
502 |
}
|
|
503 |
|
|
504 |
|
|
505 |
/***********************************************************************/
|
|
506 |
/* */
|
|
507 |
/* All exported parsing routines handle leading whitespace and stop at */
|
|
508 |
/* the first character which isn't part of the just handled token. */
|
|
509 |
/* */
|
|
510 |
/***********************************************************************/
|
|
511 |
|
|
512 |
|
|
513 |
FT_LOCAL_DEF( void )
|
|
514 |
ps_parser_skip_PS_token( PS_Parser parser )
|
|
515 |
{
|
|
516 |
/* Note: PostScript allows any non-delimiting, non-whitespace */
|
|
517 |
/* character in a name (PS Ref Manual, 3rd ed, p31). */
|
|
518 |
/* PostScript delimiters are (, ), <, >, [, ], {, }, /, and %. */
|
|
519 |
|
|
520 |
FT_Byte* cur = parser->cursor;
|
|
521 |
FT_Byte* limit = parser->limit;
|
|
522 |
FT_Error error = PSaux_Err_Ok;
|
|
523 |
|
|
524 |
|
|
525 |
skip_spaces( &cur, limit ); /* this also skips comments */
|
|
526 |
if ( cur >= limit )
|
|
527 |
goto Exit;
|
|
528 |
|
|
529 |
/* self-delimiting, single-character tokens */
|
|
530 |
if ( *cur == '[' || *cur == ']' )
|
|
531 |
{
|
|
532 |
cur++;
|
|
533 |
goto Exit;
|
|
534 |
}
|
|
535 |
|
|
536 |
/* skip balanced expressions (procedures and strings) */
|
|
537 |
|
|
538 |
if ( *cur == '{' ) /* {...} */
|
|
539 |
{
|
|
540 |
error = skip_procedure( &cur, limit );
|
|
541 |
goto Exit;
|
|
542 |
}
|
|
543 |
|
|
544 |
if ( *cur == '(' ) /* (...) */
|
|
545 |
{
|
|
546 |
error = skip_literal_string( &cur, limit );
|
|
547 |
goto Exit;
|
|
548 |
}
|
|
549 |
|
|
550 |
if ( *cur == '<' ) /* <...> */
|
|
551 |
{
|
|
552 |
if ( cur + 1 < limit && *(cur + 1) == '<' ) /* << */
|
|
553 |
{
|
|
554 |
cur++;
|
|
555 |
cur++;
|
|
556 |
}
|
|
557 |
else
|
|
558 |
error = skip_string( &cur, limit );
|
|
559 |
|
|
560 |
goto Exit;
|
|
561 |
}
|
|
562 |
|
|
563 |
if ( *cur == '>' )
|
|
564 |
{
|
|
565 |
cur++;
|
|
566 |
if ( cur >= limit || *cur != '>' ) /* >> */
|
|
567 |
{
|
|
568 |
FT_ERROR(( "ps_parser_skip_PS_token:"
|
|
569 |
" unexpected closing delimiter `>'\n" ));
|
|
570 |
error = PSaux_Err_Invalid_File_Format;
|
|
571 |
goto Exit;
|
|
572 |
}
|
|
573 |
cur++;
|
|
574 |
goto Exit;
|
|
575 |
}
|
|
576 |
|
|
577 |
if ( *cur == '/' )
|
|
578 |
cur++;
|
|
579 |
|
|
580 |
/* anything else */
|
|
581 |
while ( cur < limit )
|
|
582 |
{
|
|
583 |
/* *cur might be invalid (e.g., ')' or '}'), but this */
|
|
584 |
/* is handled by the test `cur == parser->cursor' below */
|
|
585 |
if ( IS_PS_DELIM( *cur ) )
|
|
586 |
break;
|
|
587 |
|
|
588 |
cur++;
|
|
589 |
}
|
|
590 |
|
|
591 |
Exit:
|
|
592 |
if ( cur == parser->cursor )
|
|
593 |
{
|
|
594 |
FT_ERROR(( "ps_parser_skip_PS_token:"
|
|
595 |
" current token is `%c' which is self-delimiting\n"
|
|
596 |
" "
|
|
597 |
" but invalid at this point\n",
|
|
598 |
*cur ));
|
|
599 |
|
|
600 |
error = PSaux_Err_Invalid_File_Format;
|
|
601 |
}
|
|
602 |
|
|
603 |
parser->error = error;
|
|
604 |
parser->cursor = cur;
|
|
605 |
}
|
|
606 |
|
|
607 |
|
|
608 |
FT_LOCAL_DEF( void )
|
|
609 |
ps_parser_skip_spaces( PS_Parser parser )
|
|
610 |
{
|
|
611 |
skip_spaces( &parser->cursor, parser->limit );
|
|
612 |
}
|
|
613 |
|
|
614 |
|
|
615 |
/* `token' here means either something between balanced delimiters */
|
|
616 |
/* or the next token; the delimiters are not removed. */
|
|
617 |
|
|
618 |
FT_LOCAL_DEF( void )
|
|
619 |
ps_parser_to_token( PS_Parser parser,
|
|
620 |
T1_Token token )
|
|
621 |
{
|
|
622 |
FT_Byte* cur;
|
|
623 |
FT_Byte* limit;
|
|
624 |
FT_Int embed;
|
|
625 |
|
|
626 |
|
|
627 |
token->type = T1_TOKEN_TYPE_NONE;
|
|
628 |
token->start = 0;
|
|
629 |
token->limit = 0;
|
|
630 |
|
|
631 |
/* first of all, skip leading whitespace */
|
|
632 |
ps_parser_skip_spaces( parser );
|
|
633 |
|
|
634 |
cur = parser->cursor;
|
|
635 |
limit = parser->limit;
|
|
636 |
|
|
637 |
if ( cur >= limit )
|
|
638 |
return;
|
|
639 |
|
|
640 |
switch ( *cur )
|
|
641 |
{
|
|
642 |
/************* check for literal string *****************/
|
|
643 |
case '(':
|
|
644 |
token->type = T1_TOKEN_TYPE_STRING;
|
|
645 |
token->start = cur;
|
|
646 |
|
|
647 |
if ( skip_literal_string( &cur, limit ) == PSaux_Err_Ok )
|
|
648 |
token->limit = cur;
|
|
649 |
break;
|
|
650 |
|
|
651 |
/************* check for programs/array *****************/
|
|
652 |
case '{':
|
|
653 |
token->type = T1_TOKEN_TYPE_ARRAY;
|
|
654 |
token->start = cur;
|
|
655 |
|
|
656 |
if ( skip_procedure( &cur, limit ) == PSaux_Err_Ok )
|
|
657 |
token->limit = cur;
|
|
658 |
break;
|
|
659 |
|
|
660 |
/************* check for table/array ********************/
|
|
661 |
/* XXX: in theory we should also look for "<<" */
|
|
662 |
/* since this is semantically equivalent to "["; */
|
|
663 |
/* in practice it doesn't matter (?) */
|
|
664 |
case '[':
|
|
665 |
token->type = T1_TOKEN_TYPE_ARRAY;
|
|
666 |
embed = 1;
|
|
667 |
token->start = cur++;
|
|
668 |
|
|
669 |
/* we need this to catch `[ ]' */
|
|
670 |
parser->cursor = cur;
|
|
671 |
ps_parser_skip_spaces( parser );
|
|
672 |
cur = parser->cursor;
|
|
673 |
|
|
674 |
while ( cur < limit && !parser->error )
|
|
675 |
{
|
|
676 |
/* XXX: this is wrong because it does not */
|
|
677 |
/* skip comments, procedures, and strings */
|
|
678 |
if ( *cur == '[' )
|
|
679 |
embed++;
|
|
680 |
else if ( *cur == ']' )
|
|
681 |
{
|
|
682 |
embed--;
|
|
683 |
if ( embed <= 0 )
|
|
684 |
{
|
|
685 |
token->limit = ++cur;
|
|
686 |
break;
|
|
687 |
}
|
|
688 |
}
|
|
689 |
|
|
690 |
parser->cursor = cur;
|
|
691 |
ps_parser_skip_PS_token( parser );
|
|
692 |
/* we need this to catch `[XXX ]' */
|
|
693 |
ps_parser_skip_spaces ( parser );
|
|
694 |
cur = parser->cursor;
|
|
695 |
}
|
|
696 |
break;
|
|
697 |
|
|
698 |
/* ************ otherwise, it is any token **************/
|
|
699 |
default:
|
|
700 |
token->start = cur;
|
|
701 |
token->type = ( *cur == '/' ? T1_TOKEN_TYPE_KEY : T1_TOKEN_TYPE_ANY );
|
|
702 |
ps_parser_skip_PS_token( parser );
|
|
703 |
cur = parser->cursor;
|
|
704 |
if ( !parser->error )
|
|
705 |
token->limit = cur;
|
|
706 |
}
|
|
707 |
|
|
708 |
if ( !token->limit )
|
|
709 |
{
|
|
710 |
token->start = 0;
|
|
711 |
token->type = T1_TOKEN_TYPE_NONE;
|
|
712 |
}
|
|
713 |
|
|
714 |
parser->cursor = cur;
|
|
715 |
}
|
|
716 |
|
|
717 |
|
|
718 |
/* NB: `tokens' can be NULL if we only want to count */
|
|
719 |
/* the number of array elements */
|
|
720 |
|
|
721 |
FT_LOCAL_DEF( void )
|
|
722 |
ps_parser_to_token_array( PS_Parser parser,
|
|
723 |
T1_Token tokens,
|
|
724 |
FT_UInt max_tokens,
|
|
725 |
FT_Int* pnum_tokens )
|
|
726 |
{
|
|
727 |
T1_TokenRec master;
|
|
728 |
|
|
729 |
|
|
730 |
*pnum_tokens = -1;
|
|
731 |
|
|
732 |
/* this also handles leading whitespace */
|
|
733 |
ps_parser_to_token( parser, &master );
|
|
734 |
|
|
735 |
if ( master.type == T1_TOKEN_TYPE_ARRAY )
|
|
736 |
{
|
|
737 |
FT_Byte* old_cursor = parser->cursor;
|
|
738 |
FT_Byte* old_limit = parser->limit;
|
|
739 |
T1_Token cur = tokens;
|
|
740 |
T1_Token limit = cur + max_tokens;
|
|
741 |
|
|
742 |
|
|
743 |
/* don't include outermost delimiters */
|
|
744 |
parser->cursor = master.start + 1;
|
|
745 |
parser->limit = master.limit - 1;
|
|
746 |
|
|
747 |
while ( parser->cursor < parser->limit )
|
|
748 |
{
|
|
749 |
T1_TokenRec token;
|
|
750 |
|
|
751 |
|
|
752 |
ps_parser_to_token( parser, &token );
|
|
753 |
if ( !token.type )
|
|
754 |
break;
|
|
755 |
|
|
756 |
if ( tokens != NULL && cur < limit )
|
|
757 |
*cur = token;
|
|
758 |
|
|
759 |
cur++;
|
|
760 |
}
|
|
761 |
|
|
762 |
*pnum_tokens = (FT_Int)( cur - tokens );
|
|
763 |
|
|
764 |
parser->cursor = old_cursor;
|
|
765 |
parser->limit = old_limit;
|
|
766 |
}
|
|
767 |
}
|
|
768 |
|
|
769 |
|
|
770 |
/* first character must be a delimiter or a part of a number */
|
|
771 |
/* NB: `coords' can be NULL if we just want to skip the */
|
|
772 |
/* array; in this case we ignore `max_coords' */
|
|
773 |
|
|
774 |
static FT_Int
|
|
775 |
ps_tocoordarray( FT_Byte* *acur,
|
|
776 |
FT_Byte* limit,
|
|
777 |
FT_Int max_coords,
|
|
778 |
FT_Short* coords )
|
|
779 |
{
|
|
780 |
FT_Byte* cur = *acur;
|
|
781 |
FT_Int count = 0;
|
|
782 |
FT_Byte c, ender;
|
|
783 |
|
|
784 |
|
|
785 |
if ( cur >= limit )
|
|
786 |
goto Exit;
|
|
787 |
|
|
788 |
/* check for the beginning of an array; otherwise, only one number */
|
|
789 |
/* will be read */
|
|
790 |
c = *cur;
|
|
791 |
ender = 0;
|
|
792 |
|
|
793 |
if ( c == '[' )
|
|
794 |
ender = ']';
|
|
795 |
else if ( c == '{' )
|
|
796 |
ender = '}';
|
|
797 |
|
|
798 |
if ( ender )
|
|
799 |
cur++;
|
|
800 |
|
|
801 |
/* now, read the coordinates */
|
|
802 |
while ( cur < limit )
|
|
803 |
{
|
|
804 |
FT_Short dummy;
|
|
805 |
FT_Byte* old_cur;
|
|
806 |
|
|
807 |
|
|
808 |
/* skip whitespace in front of data */
|
|
809 |
skip_spaces( &cur, limit );
|
|
810 |
if ( cur >= limit )
|
|
811 |
goto Exit;
|
|
812 |
|
|
813 |
if ( *cur == ender )
|
|
814 |
{
|
|
815 |
cur++;
|
|
816 |
break;
|
|
817 |
}
|
|
818 |
|
|
819 |
old_cur = cur;
|
|
820 |
|
|
821 |
if ( coords != NULL && count >= max_coords )
|
|
822 |
break;
|
|
823 |
|
|
824 |
/* call PS_Conv_ToFixed() even if coords == NULL */
|
|
825 |
/* to properly parse number at `cur' */
|
|
826 |
*( coords != NULL ? &coords[count] : &dummy ) =
|
|
827 |
(FT_Short)( PS_Conv_ToFixed( &cur, limit, 0 ) >> 16 );
|
|
828 |
|
|
829 |
if ( old_cur == cur )
|
|
830 |
{
|
|
831 |
count = -1;
|
|
832 |
goto Exit;
|
|
833 |
}
|
|
834 |
else
|
|
835 |
count++;
|
|
836 |
|
|
837 |
if ( !ender )
|
|
838 |
break;
|
|
839 |
}
|
|
840 |
|
|
841 |
Exit:
|
|
842 |
*acur = cur;
|
|
843 |
return count;
|
|
844 |
}
|
|
845 |
|
|
846 |
|
|
847 |
/* first character must be a delimiter or a part of a number */
|
|
848 |
/* NB: `values' can be NULL if we just want to skip the */
|
|
849 |
/* array; in this case we ignore `max_values' */
|
|
850 |
|
|
851 |
static FT_Int
|
|
852 |
ps_tofixedarray( FT_Byte* *acur,
|
|
853 |
FT_Byte* limit,
|
|
854 |
FT_Int max_values,
|
|
855 |
FT_Fixed* values,
|
|
856 |
FT_Int power_ten )
|
|
857 |
{
|
|
858 |
FT_Byte* cur = *acur;
|
|
859 |
FT_Int count = 0;
|
|
860 |
FT_Byte c, ender;
|
|
861 |
|
|
862 |
|
|
863 |
if ( cur >= limit )
|
|
864 |
goto Exit;
|
|
865 |
|
|
866 |
/* Check for the beginning of an array. Otherwise, only one number */
|
|
867 |
/* will be read. */
|
|
868 |
c = *cur;
|
|
869 |
ender = 0;
|
|
870 |
|
|
871 |
if ( c == '[' )
|
|
872 |
ender = ']';
|
|
873 |
else if ( c == '{' )
|
|
874 |
ender = '}';
|
|
875 |
|
|
876 |
if ( ender )
|
|
877 |
cur++;
|
|
878 |
|
|
879 |
/* now, read the values */
|
|
880 |
while ( cur < limit )
|
|
881 |
{
|
|
882 |
FT_Fixed dummy;
|
|
883 |
FT_Byte* old_cur;
|
|
884 |
|
|
885 |
|
|
886 |
/* skip whitespace in front of data */
|
|
887 |
skip_spaces( &cur, limit );
|
|
888 |
if ( cur >= limit )
|
|
889 |
goto Exit;
|
|
890 |
|
|
891 |
if ( *cur == ender )
|
|
892 |
{
|
|
893 |
cur++;
|
|
894 |
break;
|
|
895 |
}
|
|
896 |
|
|
897 |
old_cur = cur;
|
|
898 |
|
|
899 |
if ( values != NULL && count >= max_values )
|
|
900 |
break;
|
|
901 |
|
|
902 |
/* call PS_Conv_ToFixed() even if coords == NULL */
|
|
903 |
/* to properly parse number at `cur' */
|
|
904 |
*( values != NULL ? &values[count] : &dummy ) =
|
|
905 |
PS_Conv_ToFixed( &cur, limit, power_ten );
|
|
906 |
|
|
907 |
if ( old_cur == cur )
|
|
908 |
{
|
|
909 |
count = -1;
|
|
910 |
goto Exit;
|
|
911 |
}
|
|
912 |
else
|
|
913 |
count++;
|
|
914 |
|
|
915 |
if ( !ender )
|
|
916 |
break;
|
|
917 |
}
|
|
918 |
|
|
919 |
Exit:
|
|
920 |
*acur = cur;
|
|
921 |
return count;
|
|
922 |
}
|
|
923 |
|
|
924 |
|
|
925 |
#if 0
|
|
926 |
|
|
927 |
static FT_String*
|
|
928 |
ps_tostring( FT_Byte** cursor,
|
|
929 |
FT_Byte* limit,
|
|
930 |
FT_Memory memory )
|
|
931 |
{
|
|
932 |
FT_Byte* cur = *cursor;
|
|
933 |
FT_PtrDist len = 0;
|
|
934 |
FT_Int count;
|
|
935 |
FT_String* result;
|
|
936 |
FT_Error error;
|
|
937 |
|
|
938 |
|
|
939 |
/* XXX: some stupid fonts have a `Notice' or `Copyright' string */
|
|
940 |
/* that simply doesn't begin with an opening parenthesis, even */
|
|
941 |
/* though they have a closing one! E.g. "amuncial.pfb" */
|
|
942 |
/* */
|
|
943 |
/* We must deal with these ill-fated cases there. Note that */
|
|
944 |
/* these fonts didn't work with the old Type 1 driver as the */
|
|
945 |
/* notice/copyright was not recognized as a valid string token */
|
|
946 |
/* and made the old token parser commit errors. */
|
|
947 |
|
|
948 |
while ( cur < limit && ( *cur == ' ' || *cur == '\t' ) )
|
|
949 |
cur++;
|
|
950 |
if ( cur + 1 >= limit )
|
|
951 |
return 0;
|
|
952 |
|
|
953 |
if ( *cur == '(' )
|
|
954 |
cur++; /* skip the opening parenthesis, if there is one */
|
|
955 |
|
|
956 |
*cursor = cur;
|
|
957 |
count = 0;
|
|
958 |
|
|
959 |
/* then, count its length */
|
|
960 |
for ( ; cur < limit; cur++ )
|
|
961 |
{
|
|
962 |
if ( *cur == '(' )
|
|
963 |
count++;
|
|
964 |
|
|
965 |
else if ( *cur == ')' )
|
|
966 |
{
|
|
967 |
count--;
|
|
968 |
if ( count < 0 )
|
|
969 |
break;
|
|
970 |
}
|
|
971 |
}
|
|
972 |
|
|
973 |
len = cur - *cursor;
|
|
974 |
if ( cur >= limit || FT_ALLOC( result, len + 1 ) )
|
|
975 |
return 0;
|
|
976 |
|
|
977 |
/* now copy the string */
|
|
978 |
FT_MEM_COPY( result, *cursor, len );
|
|
979 |
result[len] = '\0';
|
|
980 |
*cursor = cur;
|
|
981 |
return result;
|
|
982 |
}
|
|
983 |
|
|
984 |
#endif /* 0 */
|
|
985 |
|
|
986 |
|
|
987 |
static int
|
|
988 |
ps_tobool( FT_Byte* *acur,
|
|
989 |
FT_Byte* limit )
|
|
990 |
{
|
|
991 |
FT_Byte* cur = *acur;
|
|
992 |
FT_Bool result = 0;
|
|
993 |
|
|
994 |
|
|
995 |
/* return 1 if we find `true', 0 otherwise */
|
|
996 |
if ( cur + 3 < limit &&
|
|
997 |
cur[0] == 't' &&
|
|
998 |
cur[1] == 'r' &&
|
|
999 |
cur[2] == 'u' &&
|
|
1000 |
cur[3] == 'e' )
|
|
1001 |
{
|
|
1002 |
result = 1;
|
|
1003 |
cur += 5;
|
|
1004 |
}
|
|
1005 |
else if ( cur + 4 < limit &&
|
|
1006 |
cur[0] == 'f' &&
|
|
1007 |
cur[1] == 'a' &&
|
|
1008 |
cur[2] == 'l' &&
|
|
1009 |
cur[3] == 's' &&
|
|
1010 |
cur[4] == 'e' )
|
|
1011 |
{
|
|
1012 |
result = 0;
|
|
1013 |
cur += 6;
|
|
1014 |
}
|
|
1015 |
|
|
1016 |
*acur = cur;
|
|
1017 |
return result;
|
|
1018 |
}
|
|
1019 |
|
|
1020 |
|
|
1021 |
/* load a simple field (i.e. non-table) into the current list of objects */
|
|
1022 |
|
|
1023 |
FT_LOCAL_DEF( FT_Error )
|
|
1024 |
ps_parser_load_field( PS_Parser parser,
|
|
1025 |
const T1_Field field,
|
|
1026 |
void** objects,
|
|
1027 |
FT_UInt max_objects,
|
|
1028 |
FT_ULong* pflags )
|
|
1029 |
{
|
|
1030 |
T1_TokenRec token;
|
|
1031 |
FT_Byte* cur;
|
|
1032 |
FT_Byte* limit;
|
|
1033 |
FT_UInt count;
|
|
1034 |
FT_UInt idx;
|
|
1035 |
FT_Error error;
|
|
1036 |
|
|
1037 |
|
|
1038 |
/* this also skips leading whitespace */
|
|
1039 |
ps_parser_to_token( parser, &token );
|
|
1040 |
if ( !token.type )
|
|
1041 |
goto Fail;
|
|
1042 |
|
|
1043 |
count = 1;
|
|
1044 |
idx = 0;
|
|
1045 |
cur = token.start;
|
|
1046 |
limit = token.limit;
|
|
1047 |
|
|
1048 |
/* we must detect arrays in /FontBBox */
|
|
1049 |
if ( field->type == T1_FIELD_TYPE_BBOX )
|
|
1050 |
{
|
|
1051 |
T1_TokenRec token2;
|
|
1052 |
FT_Byte* old_cur = parser->cursor;
|
|
1053 |
FT_Byte* old_limit = parser->limit;
|
|
1054 |
|
|
1055 |
|
|
1056 |
/* don't include delimiters */
|
|
1057 |
parser->cursor = token.start + 1;
|
|
1058 |
parser->limit = token.limit - 1;
|
|
1059 |
|
|
1060 |
ps_parser_to_token( parser, &token2 );
|
|
1061 |
parser->cursor = old_cur;
|
|
1062 |
parser->limit = old_limit;
|
|
1063 |
|
|
1064 |
if ( token2.type == T1_TOKEN_TYPE_ARRAY )
|
|
1065 |
goto FieldArray;
|
|
1066 |
}
|
|
1067 |
else if ( token.type == T1_TOKEN_TYPE_ARRAY )
|
|
1068 |
{
|
|
1069 |
FieldArray:
|
|
1070 |
/* if this is an array and we have no blend, an error occurs */
|
|
1071 |
if ( max_objects == 0 )
|
|
1072 |
goto Fail;
|
|
1073 |
|
|
1074 |
count = max_objects;
|
|
1075 |
idx = 1;
|
|
1076 |
|
|
1077 |
/* don't include delimiters */
|
|
1078 |
cur++;
|
|
1079 |
limit--;
|
|
1080 |
}
|
|
1081 |
|
|
1082 |
for ( ; count > 0; count--, idx++ )
|
|
1083 |
{
|
|
1084 |
FT_Byte* q = (FT_Byte*)objects[idx] + field->offset;
|
|
1085 |
FT_Long val;
|
|
1086 |
FT_String* string;
|
|
1087 |
|
|
1088 |
|
|
1089 |
skip_spaces( &cur, limit );
|
|
1090 |
|
|
1091 |
switch ( field->type )
|
|
1092 |
{
|
|
1093 |
case T1_FIELD_TYPE_BOOL:
|
|
1094 |
val = ps_tobool( &cur, limit );
|
|
1095 |
goto Store_Integer;
|
|
1096 |
|
|
1097 |
case T1_FIELD_TYPE_FIXED:
|
|
1098 |
val = PS_Conv_ToFixed( &cur, limit, 0 );
|
|
1099 |
goto Store_Integer;
|
|
1100 |
|
|
1101 |
case T1_FIELD_TYPE_FIXED_1000:
|
|
1102 |
val = PS_Conv_ToFixed( &cur, limit, 3 );
|
|
1103 |
goto Store_Integer;
|
|
1104 |
|
|
1105 |
case T1_FIELD_TYPE_INTEGER:
|
|
1106 |
val = PS_Conv_ToInt( &cur, limit );
|
|
1107 |
/* fall through */
|
|
1108 |
|
|
1109 |
Store_Integer:
|
|
1110 |
switch ( field->size )
|
|
1111 |
{
|
|
1112 |
case (8 / FT_CHAR_BIT):
|
|
1113 |
*(FT_Byte*)q = (FT_Byte)val;
|
|
1114 |
break;
|
|
1115 |
|
|
1116 |
case (16 / FT_CHAR_BIT):
|
|
1117 |
*(FT_UShort*)q = (FT_UShort)val;
|
|
1118 |
break;
|
|
1119 |
|
|
1120 |
case (32 / FT_CHAR_BIT):
|
|
1121 |
*(FT_UInt32*)q = (FT_UInt32)val;
|
|
1122 |
break;
|
|
1123 |
|
|
1124 |
default: /* for 64-bit systems */
|
|
1125 |
*(FT_Long*)q = val;
|
|
1126 |
}
|
|
1127 |
break;
|
|
1128 |
|
|
1129 |
case T1_FIELD_TYPE_STRING:
|
|
1130 |
case T1_FIELD_TYPE_KEY:
|
|
1131 |
{
|
|
1132 |
FT_Memory memory = parser->memory;
|
|
1133 |
FT_UInt len = (FT_UInt)( limit - cur );
|
|
1134 |
|
|
1135 |
|
|
1136 |
if ( cur >= limit )
|
|
1137 |
break;
|
|
1138 |
|
|
1139 |
/* we allow both a string or a name */
|
|
1140 |
/* for cases like /FontName (foo) def */
|
|
1141 |
if ( token.type == T1_TOKEN_TYPE_KEY )
|
|
1142 |
{
|
|
1143 |
/* don't include leading `/' */
|
|
1144 |
len--;
|
|
1145 |
cur++;
|
|
1146 |
}
|
|
1147 |
else if ( token.type == T1_TOKEN_TYPE_STRING )
|
|
1148 |
{
|
|
1149 |
/* don't include delimiting parentheses */
|
|
1150 |
/* XXX we don't handle <<...>> here */
|
|
1151 |
/* XXX should we convert octal escapes? */
|
|
1152 |
/* if so, what encoding should we use? */
|
|
1153 |
cur++;
|
|
1154 |
len -= 2;
|
|
1155 |
}
|
|
1156 |
else
|
|
1157 |
{
|
|
1158 |
FT_ERROR(( "ps_parser_load_field:"
|
|
1159 |
" expected a name or string\n"
|
|
1160 |
" "
|
|
1161 |
" but found token of type %d instead\n",
|
|
1162 |
token.type ));
|
|
1163 |
error = PSaux_Err_Invalid_File_Format;
|
|
1164 |
goto Exit;
|
|
1165 |
}
|
|
1166 |
|
|
1167 |
/* for this to work (FT_String**)q must have been */
|
|
1168 |
/* initialized to NULL */
|
|
1169 |
if ( *(FT_String**)q != NULL )
|
|
1170 |
{
|
|
1171 |
FT_TRACE0(( "ps_parser_load_field: overwriting field %s\n",
|
|
1172 |
field->ident ));
|
|
1173 |
FT_FREE( *(FT_String**)q );
|
|
1174 |
*(FT_String**)q = NULL;
|
|
1175 |
}
|
|
1176 |
|
|
1177 |
if ( FT_ALLOC( string, len + 1 ) )
|
|
1178 |
goto Exit;
|
|
1179 |
|
|
1180 |
FT_MEM_COPY( string, cur, len );
|
|
1181 |
string[len] = 0;
|
|
1182 |
|
|
1183 |
*(FT_String**)q = string;
|
|
1184 |
}
|
|
1185 |
break;
|
|
1186 |
|
|
1187 |
case T1_FIELD_TYPE_BBOX:
|
|
1188 |
{
|
|
1189 |
FT_Fixed temp[4];
|
|
1190 |
FT_BBox* bbox = (FT_BBox*)q;
|
|
1191 |
FT_Int result;
|
|
1192 |
|
|
1193 |
|
|
1194 |
result = ps_tofixedarray( &cur, limit, 4, temp, 0 );
|
|
1195 |
|
|
1196 |
if ( result < 0 )
|
|
1197 |
{
|
|
1198 |
FT_ERROR(( "ps_parser_load_field:"
|
|
1199 |
" expected four integers in bounding box\n" ));
|
|
1200 |
error = PSaux_Err_Invalid_File_Format;
|
|
1201 |
goto Exit;
|
|
1202 |
}
|
|
1203 |
|
|
1204 |
bbox->xMin = FT_RoundFix( temp[0] );
|
|
1205 |
bbox->yMin = FT_RoundFix( temp[1] );
|
|
1206 |
bbox->xMax = FT_RoundFix( temp[2] );
|
|
1207 |
bbox->yMax = FT_RoundFix( temp[3] );
|
|
1208 |
}
|
|
1209 |
break;
|
|
1210 |
|
|
1211 |
default:
|
|
1212 |
/* an error occurred */
|
|
1213 |
goto Fail;
|
|
1214 |
}
|
|
1215 |
}
|
|
1216 |
|
|
1217 |
#if 0 /* obsolete -- keep for reference */
|
|
1218 |
if ( pflags )
|
|
1219 |
*pflags |= 1L << field->flag_bit;
|
|
1220 |
#else
|
|
1221 |
FT_UNUSED( pflags );
|
|
1222 |
#endif
|
|
1223 |
|
|
1224 |
error = PSaux_Err_Ok;
|
|
1225 |
|
|
1226 |
Exit:
|
|
1227 |
return error;
|
|
1228 |
|
|
1229 |
Fail:
|
|
1230 |
error = PSaux_Err_Invalid_File_Format;
|
|
1231 |
goto Exit;
|
|
1232 |
}
|
|
1233 |
|
|
1234 |
|
|
1235 |
#define T1_MAX_TABLE_ELEMENTS 32
|
|
1236 |
|
|
1237 |
|
|
1238 |
FT_LOCAL_DEF( FT_Error )
|
|
1239 |
ps_parser_load_field_table( PS_Parser parser,
|
|
1240 |
const T1_Field field,
|
|
1241 |
void** objects,
|
|
1242 |
FT_UInt max_objects,
|
|
1243 |
FT_ULong* pflags )
|
|
1244 |
{
|
|
1245 |
T1_TokenRec elements[T1_MAX_TABLE_ELEMENTS];
|
|
1246 |
T1_Token token;
|
|
1247 |
FT_Int num_elements;
|
|
1248 |
FT_Error error = PSaux_Err_Ok;
|
|
1249 |
FT_Byte* old_cursor;
|
|
1250 |
FT_Byte* old_limit;
|
|
1251 |
T1_FieldRec fieldrec = *(T1_Field)field;
|
|
1252 |
|
|
1253 |
|
|
1254 |
fieldrec.type = T1_FIELD_TYPE_INTEGER;
|
|
1255 |
if ( field->type == T1_FIELD_TYPE_FIXED_ARRAY ||
|
|
1256 |
field->type == T1_FIELD_TYPE_BBOX )
|
|
1257 |
fieldrec.type = T1_FIELD_TYPE_FIXED;
|
|
1258 |
|
|
1259 |
ps_parser_to_token_array( parser, elements,
|
|
1260 |
T1_MAX_TABLE_ELEMENTS, &num_elements );
|
|
1261 |
if ( num_elements < 0 )
|
|
1262 |
{
|
|
1263 |
error = PSaux_Err_Ignore;
|
|
1264 |
goto Exit;
|
|
1265 |
}
|
|
1266 |
if ( (FT_UInt)num_elements > field->array_max )
|
|
1267 |
num_elements = field->array_max;
|
|
1268 |
|
|
1269 |
old_cursor = parser->cursor;
|
|
1270 |
old_limit = parser->limit;
|
|
1271 |
|
|
1272 |
/* we store the elements count if necessary; */
|
|
1273 |
/* we further assume that `count_offset' can't be zero */
|
|
1274 |
if ( field->type != T1_FIELD_TYPE_BBOX && field->count_offset != 0 )
|
|
1275 |
*(FT_Byte*)( (FT_Byte*)objects[0] + field->count_offset ) =
|
|
1276 |
(FT_Byte)num_elements;
|
|
1277 |
|
|
1278 |
/* we now load each element, adjusting the field.offset on each one */
|
|
1279 |
token = elements;
|
|
1280 |
for ( ; num_elements > 0; num_elements--, token++ )
|
|
1281 |
{
|
|
1282 |
parser->cursor = token->start;
|
|
1283 |
parser->limit = token->limit;
|
|
1284 |
ps_parser_load_field( parser, &fieldrec, objects, max_objects, 0 );
|
|
1285 |
fieldrec.offset += fieldrec.size;
|
|
1286 |
}
|
|
1287 |
|
|
1288 |
#if 0 /* obsolete -- keep for reference */
|
|
1289 |
if ( pflags )
|
|
1290 |
*pflags |= 1L << field->flag_bit;
|
|
1291 |
#else
|
|
1292 |
FT_UNUSED( pflags );
|
|
1293 |
#endif
|
|
1294 |
|
|
1295 |
parser->cursor = old_cursor;
|
|
1296 |
parser->limit = old_limit;
|
|
1297 |
|
|
1298 |
Exit:
|
|
1299 |
return error;
|
|
1300 |
}
|
|
1301 |
|
|
1302 |
|
|
1303 |
FT_LOCAL_DEF( FT_Long )
|
|
1304 |
ps_parser_to_int( PS_Parser parser )
|
|
1305 |
{
|
|
1306 |
ps_parser_skip_spaces( parser );
|
|
1307 |
return PS_Conv_ToInt( &parser->cursor, parser->limit );
|
|
1308 |
}
|
|
1309 |
|
|
1310 |
|
|
1311 |
/* first character must be `<' if `delimiters' is non-zero */
|
|
1312 |
|
|
1313 |
FT_LOCAL_DEF( FT_Error )
|
|
1314 |
ps_parser_to_bytes( PS_Parser parser,
|
|
1315 |
FT_Byte* bytes,
|
|
1316 |
FT_Offset max_bytes,
|
|
1317 |
FT_Long* pnum_bytes,
|
|
1318 |
FT_Bool delimiters )
|
|
1319 |
{
|
|
1320 |
FT_Error error = PSaux_Err_Ok;
|
|
1321 |
FT_Byte* cur;
|
|
1322 |
|
|
1323 |
|
|
1324 |
ps_parser_skip_spaces( parser );
|
|
1325 |
cur = parser->cursor;
|
|
1326 |
|
|
1327 |
if ( cur >= parser->limit )
|
|
1328 |
goto Exit;
|
|
1329 |
|
|
1330 |
if ( delimiters )
|
|
1331 |
{
|
|
1332 |
if ( *cur != '<' )
|
|
1333 |
{
|
|
1334 |
FT_ERROR(( "ps_parser_to_bytes: Missing starting delimiter `<'\n" ));
|
|
1335 |
error = PSaux_Err_Invalid_File_Format;
|
|
1336 |
goto Exit;
|
|
1337 |
}
|
|
1338 |
|
|
1339 |
cur++;
|
|
1340 |
}
|
|
1341 |
|
|
1342 |
*pnum_bytes = PS_Conv_ASCIIHexDecode( &cur,
|
|
1343 |
parser->limit,
|
|
1344 |
bytes,
|
|
1345 |
max_bytes );
|
|
1346 |
|
|
1347 |
if ( delimiters )
|
|
1348 |
{
|
|
1349 |
if ( cur < parser->limit && *cur != '>' )
|
|
1350 |
{
|
|
1351 |
FT_ERROR(( "ps_parser_to_bytes: Missing closing delimiter `>'\n" ));
|
|
1352 |
error = PSaux_Err_Invalid_File_Format;
|
|
1353 |
goto Exit;
|
|
1354 |
}
|
|
1355 |
|
|
1356 |
cur++;
|
|
1357 |
}
|
|
1358 |
|
|
1359 |
parser->cursor = cur;
|
|
1360 |
|
|
1361 |
Exit:
|
|
1362 |
return error;
|
|
1363 |
}
|
|
1364 |
|
|
1365 |
|
|
1366 |
FT_LOCAL_DEF( FT_Fixed )
|
|
1367 |
ps_parser_to_fixed( PS_Parser parser,
|
|
1368 |
FT_Int power_ten )
|
|
1369 |
{
|
|
1370 |
ps_parser_skip_spaces( parser );
|
|
1371 |
return PS_Conv_ToFixed( &parser->cursor, parser->limit, power_ten );
|
|
1372 |
}
|
|
1373 |
|
|
1374 |
|
|
1375 |
FT_LOCAL_DEF( FT_Int )
|
|
1376 |
ps_parser_to_coord_array( PS_Parser parser,
|
|
1377 |
FT_Int max_coords,
|
|
1378 |
FT_Short* coords )
|
|
1379 |
{
|
|
1380 |
ps_parser_skip_spaces( parser );
|
|
1381 |
return ps_tocoordarray( &parser->cursor, parser->limit,
|
|
1382 |
max_coords, coords );
|
|
1383 |
}
|
|
1384 |
|
|
1385 |
|
|
1386 |
FT_LOCAL_DEF( FT_Int )
|
|
1387 |
ps_parser_to_fixed_array( PS_Parser parser,
|
|
1388 |
FT_Int max_values,
|
|
1389 |
FT_Fixed* values,
|
|
1390 |
FT_Int power_ten )
|
|
1391 |
{
|
|
1392 |
ps_parser_skip_spaces( parser );
|
|
1393 |
return ps_tofixedarray( &parser->cursor, parser->limit,
|
|
1394 |
max_values, values, power_ten );
|
|
1395 |
}
|
|
1396 |
|
|
1397 |
|
|
1398 |
#if 0
|
|
1399 |
|
|
1400 |
FT_LOCAL_DEF( FT_String* )
|
|
1401 |
T1_ToString( PS_Parser parser )
|
|
1402 |
{
|
|
1403 |
return ps_tostring( &parser->cursor, parser->limit, parser->memory );
|
|
1404 |
}
|
|
1405 |
|
|
1406 |
|
|
1407 |
FT_LOCAL_DEF( FT_Bool )
|
|
1408 |
T1_ToBool( PS_Parser parser )
|
|
1409 |
{
|
|
1410 |
return ps_tobool( &parser->cursor, parser->limit );
|
|
1411 |
}
|
|
1412 |
|
|
1413 |
#endif /* 0 */
|
|
1414 |
|
|
1415 |
|
|
1416 |
FT_LOCAL_DEF( void )
|
|
1417 |
ps_parser_init( PS_Parser parser,
|
|
1418 |
FT_Byte* base,
|
|
1419 |
FT_Byte* limit,
|
|
1420 |
FT_Memory memory )
|
|
1421 |
{
|
|
1422 |
parser->error = PSaux_Err_Ok;
|
|
1423 |
parser->base = base;
|
|
1424 |
parser->limit = limit;
|
|
1425 |
parser->cursor = base;
|
|
1426 |
parser->memory = memory;
|
|
1427 |
parser->funcs = ps_parser_funcs;
|
|
1428 |
}
|
|
1429 |
|
|
1430 |
|
|
1431 |
FT_LOCAL_DEF( void )
|
|
1432 |
ps_parser_done( PS_Parser parser )
|
|
1433 |
{
|
|
1434 |
FT_UNUSED( parser );
|
|
1435 |
}
|
|
1436 |
|
|
1437 |
|
|
1438 |
/*************************************************************************/
|
|
1439 |
/*************************************************************************/
|
|
1440 |
/***** *****/
|
|
1441 |
/***** T1 BUILDER *****/
|
|
1442 |
/***** *****/
|
|
1443 |
/*************************************************************************/
|
|
1444 |
/*************************************************************************/
|
|
1445 |
|
|
1446 |
/*************************************************************************/
|
|
1447 |
/* */
|
|
1448 |
/* <Function> */
|
|
1449 |
/* t1_builder_init */
|
|
1450 |
/* */
|
|
1451 |
/* <Description> */
|
|
1452 |
/* Initializes a given glyph builder. */
|
|
1453 |
/* */
|
|
1454 |
/* <InOut> */
|
|
1455 |
/* builder :: A pointer to the glyph builder to initialize. */
|
|
1456 |
/* */
|
|
1457 |
/* <Input> */
|
|
1458 |
/* face :: The current face object. */
|
|
1459 |
/* */
|
|
1460 |
/* size :: The current size object. */
|
|
1461 |
/* */
|
|
1462 |
/* glyph :: The current glyph object. */
|
|
1463 |
/* */
|
|
1464 |
/* hinting :: Whether hinting should be applied. */
|
|
1465 |
/* */
|
|
1466 |
FT_LOCAL_DEF( void )
|
|
1467 |
t1_builder_init( T1_Builder builder,
|
|
1468 |
FT_Face face,
|
|
1469 |
FT_Size size,
|
|
1470 |
FT_GlyphSlot glyph,
|
|
1471 |
FT_Bool hinting )
|
|
1472 |
{
|
|
1473 |
builder->parse_state = T1_Parse_Start;
|
|
1474 |
builder->load_points = 1;
|
|
1475 |
|
|
1476 |
builder->face = face;
|
|
1477 |
builder->glyph = glyph;
|
|
1478 |
builder->memory = face->memory;
|
|
1479 |
|
|
1480 |
if ( glyph )
|
|
1481 |
{
|
|
1482 |
FT_GlyphLoader loader = glyph->internal->loader;
|
|
1483 |
|
|
1484 |
|
|
1485 |
builder->loader = loader;
|
|
1486 |
builder->base = &loader->base.outline;
|
|
1487 |
builder->current = &loader->current.outline;
|
|
1488 |
FT_GlyphLoader_Rewind( loader );
|
|
1489 |
|
|
1490 |
builder->hints_globals = size->internal;
|
|
1491 |
builder->hints_funcs = 0;
|
|
1492 |
|
|
1493 |
if ( hinting )
|
|
1494 |
builder->hints_funcs = glyph->internal->glyph_hints;
|
|
1495 |
}
|
|
1496 |
|
|
1497 |
builder->pos_x = 0;
|
|
1498 |
builder->pos_y = 0;
|
|
1499 |
|
|
1500 |
builder->left_bearing.x = 0;
|
|
1501 |
builder->left_bearing.y = 0;
|
|
1502 |
builder->advance.x = 0;
|
|
1503 |
builder->advance.y = 0;
|
|
1504 |
|
|
1505 |
builder->funcs = t1_builder_funcs;
|
|
1506 |
}
|
|
1507 |
|
|
1508 |
|
|
1509 |
/*************************************************************************/
|
|
1510 |
/* */
|
|
1511 |
/* <Function> */
|
|
1512 |
/* t1_builder_done */
|
|
1513 |
/* */
|
|
1514 |
/* <Description> */
|
|
1515 |
/* Finalizes a given glyph builder. Its contents can still be used */
|
|
1516 |
/* after the call, but the function saves important information */
|
|
1517 |
/* within the corresponding glyph slot. */
|
|
1518 |
/* */
|
|
1519 |
/* <Input> */
|
|
1520 |
/* builder :: A pointer to the glyph builder to finalize. */
|
|
1521 |
/* */
|
|
1522 |
FT_LOCAL_DEF( void )
|
|
1523 |
t1_builder_done( T1_Builder builder )
|
|
1524 |
{
|
|
1525 |
FT_GlyphSlot glyph = builder->glyph;
|
|
1526 |
|
|
1527 |
|
|
1528 |
if ( glyph )
|
|
1529 |
glyph->outline = *builder->base;
|
|
1530 |
}
|
|
1531 |
|
|
1532 |
|
|
1533 |
/* check that there is enough space for `count' more points */
|
|
1534 |
FT_LOCAL_DEF( FT_Error )
|
|
1535 |
t1_builder_check_points( T1_Builder builder,
|
|
1536 |
FT_Int count )
|
|
1537 |
{
|
|
1538 |
return FT_GLYPHLOADER_CHECK_POINTS( builder->loader, count, 0 );
|
|
1539 |
}
|
|
1540 |
|
|
1541 |
|
|
1542 |
/* add a new point, do not check space */
|
|
1543 |
FT_LOCAL_DEF( void )
|
|
1544 |
t1_builder_add_point( T1_Builder builder,
|
|
1545 |
FT_Pos x,
|
|
1546 |
FT_Pos y,
|
|
1547 |
FT_Byte flag )
|
|
1548 |
{
|
|
1549 |
FT_Outline* outline = builder->current;
|
|
1550 |
|
|
1551 |
|
|
1552 |
if ( builder->load_points )
|
|
1553 |
{
|
|
1554 |
FT_Vector* point = outline->points + outline->n_points;
|
|
1555 |
FT_Byte* control = (FT_Byte*)outline->tags + outline->n_points;
|
|
1556 |
|
|
1557 |
|
|
1558 |
point->x = FIXED_TO_INT( x );
|
|
1559 |
point->y = FIXED_TO_INT( y );
|
|
1560 |
*control = (FT_Byte)( flag ? FT_CURVE_TAG_ON : FT_CURVE_TAG_CUBIC );
|
|
1561 |
}
|
|
1562 |
outline->n_points++;
|
|
1563 |
}
|
|
1564 |
|
|
1565 |
|
|
1566 |
/* check space for a new on-curve point, then add it */
|
|
1567 |
FT_LOCAL_DEF( FT_Error )
|
|
1568 |
t1_builder_add_point1( T1_Builder builder,
|
|
1569 |
FT_Pos x,
|
|
1570 |
FT_Pos y )
|
|
1571 |
{
|
|
1572 |
FT_Error error;
|
|
1573 |
|
|
1574 |
|
|
1575 |
error = t1_builder_check_points( builder, 1 );
|
|
1576 |
if ( !error )
|
|
1577 |
t1_builder_add_point( builder, x, y, 1 );
|
|
1578 |
|
|
1579 |
return error;
|
|
1580 |
}
|
|
1581 |
|
|
1582 |
|
|
1583 |
/* check space for a new contour, then add it */
|
|
1584 |
FT_LOCAL_DEF( FT_Error )
|
|
1585 |
t1_builder_add_contour( T1_Builder builder )
|
|
1586 |
{
|
|
1587 |
FT_Outline* outline = builder->current;
|
|
1588 |
FT_Error error;
|
|
1589 |
|
|
1590 |
|
|
1591 |
/* this might happen in invalid fonts */
|
|
1592 |
if ( !outline )
|
|
1593 |
{
|
|
1594 |
FT_ERROR(( "t1_builder_add_contour: no outline to add points to\n" ));
|
|
1595 |
return PSaux_Err_Invalid_File_Format;
|
|
1596 |
}
|
|
1597 |
|
|
1598 |
if ( !builder->load_points )
|
|
1599 |
{
|
|
1600 |
outline->n_contours++;
|
|
1601 |
return PSaux_Err_Ok;
|
|
1602 |
}
|
|
1603 |
|
|
1604 |
error = FT_GLYPHLOADER_CHECK_POINTS( builder->loader, 0, 1 );
|
|
1605 |
if ( !error )
|
|
1606 |
{
|
|
1607 |
if ( outline->n_contours > 0 )
|
|
1608 |
outline->contours[outline->n_contours - 1] =
|
|
1609 |
(short)( outline->n_points - 1 );
|
|
1610 |
|
|
1611 |
outline->n_contours++;
|
|
1612 |
}
|
|
1613 |
|
|
1614 |
return error;
|
|
1615 |
}
|
|
1616 |
|
|
1617 |
|
|
1618 |
/* if a path was begun, add its first on-curve point */
|
|
1619 |
FT_LOCAL_DEF( FT_Error )
|
|
1620 |
t1_builder_start_point( T1_Builder builder,
|
|
1621 |
FT_Pos x,
|
|
1622 |
FT_Pos y )
|
|
1623 |
{
|
|
1624 |
FT_Error error = PSaux_Err_Invalid_File_Format;
|
|
1625 |
|
|
1626 |
|
|
1627 |
/* test whether we are building a new contour */
|
|
1628 |
|
|
1629 |
if ( builder->parse_state == T1_Parse_Have_Path )
|
|
1630 |
error = PSaux_Err_Ok;
|
|
1631 |
else
|
|
1632 |
{
|
|
1633 |
builder->parse_state = T1_Parse_Have_Path;
|
|
1634 |
error = t1_builder_add_contour( builder );
|
|
1635 |
if ( !error )
|
|
1636 |
error = t1_builder_add_point1( builder, x, y );
|
|
1637 |
}
|
|
1638 |
|
|
1639 |
return error;
|
|
1640 |
}
|
|
1641 |
|
|
1642 |
|
|
1643 |
/* close the current contour */
|
|
1644 |
FT_LOCAL_DEF( void )
|
|
1645 |
t1_builder_close_contour( T1_Builder builder )
|
|
1646 |
{
|
|
1647 |
FT_Outline* outline = builder->current;
|
|
1648 |
FT_Int first;
|
|
1649 |
|
|
1650 |
|
|
1651 |
if ( !outline )
|
|
1652 |
return;
|
|
1653 |
|
|
1654 |
first = outline->n_contours <= 1
|
|
1655 |
? 0 : outline->contours[outline->n_contours - 2] + 1;
|
|
1656 |
|
|
1657 |
/* We must not include the last point in the path if it */
|
|
1658 |
/* is located on the first point. */
|
|
1659 |
if ( outline->n_points > 1 )
|
|
1660 |
{
|
|
1661 |
FT_Vector* p1 = outline->points + first;
|
|
1662 |
FT_Vector* p2 = outline->points + outline->n_points - 1;
|
|
1663 |
FT_Byte* control = (FT_Byte*)outline->tags + outline->n_points - 1;
|
|
1664 |
|
|
1665 |
|
|
1666 |
/* `delete' last point only if it coincides with the first */
|
|
1667 |
/* point and it is not a control point (which can happen). */
|
|
1668 |
if ( p1->x == p2->x && p1->y == p2->y )
|
|
1669 |
if ( *control == FT_CURVE_TAG_ON )
|
|
1670 |
outline->n_points--;
|
|
1671 |
}
|
|
1672 |
|
|
1673 |
if ( outline->n_contours > 0 )
|
|
1674 |
{
|
|
1675 |
/* Don't add contours only consisting of one point, i.e., */
|
|
1676 |
/* check whether the first and the last point is the same. */
|
|
1677 |
if ( first == outline->n_points - 1 )
|
|
1678 |
{
|
|
1679 |
outline->n_contours--;
|
|
1680 |
outline->n_points--;
|
|
1681 |
}
|
|
1682 |
else
|
|
1683 |
outline->contours[outline->n_contours - 1] =
|
|
1684 |
(short)( outline->n_points - 1 );
|
|
1685 |
}
|
|
1686 |
}
|
|
1687 |
|
|
1688 |
|
|
1689 |
/*************************************************************************/
|
|
1690 |
/*************************************************************************/
|
|
1691 |
/***** *****/
|
|
1692 |
/***** OTHER *****/
|
|
1693 |
/***** *****/
|
|
1694 |
/*************************************************************************/
|
|
1695 |
/*************************************************************************/
|
|
1696 |
|
|
1697 |
FT_LOCAL_DEF( void )
|
|
1698 |
t1_decrypt( FT_Byte* buffer,
|
|
1699 |
FT_Offset length,
|
|
1700 |
FT_UShort seed )
|
|
1701 |
{
|
|
1702 |
PS_Conv_EexecDecode( &buffer,
|
|
1703 |
buffer + length,
|
|
1704 |
buffer,
|
|
1705 |
length,
|
|
1706 |
&seed );
|
|
1707 |
}
|
|
1708 |
|
|
1709 |
|
|
1710 |
/* END */
|