source/libs/poppler/poppler-src/poppler/XpdfPluginAPI.cc

   1 //========================================================================
   2 //
   3 // XpdfPluginAPI.cc
   4 //
   5 // Copyright 2004 Glyph & Cog, LLC
   6 //
   7 //========================================================================
   8
   9 //========================================================================
  10 //
  11 // Modified under the Poppler project - http://poppler.freedesktop.org
  12 //
  13 // All changes made under the Poppler project to this file are licensed
  14 // under GPL version 2 or later
  15 //
  16 // Copyright (C) 2009 Kovid Goyal <kovid@kovidgoyal.net>
  17 // Copyright (C) 2012 Albert Astals Cid <aacid@kde.org>
  18 //
  19 // To see a description of the changes please see the Changelog file that
  20 // came with your tarball or type make ChangeLog if you are building from git
  21 //
  22 //========================================================================
  23
  24 #include "config.h"
  25
  26 #ifdef ENABLE_PLUGINS
  27
  28 #include "gmem.h"
  29 #include "GlobalParams.h"
  30 #include "Object.h"
  31 #include "PDFDoc.h"
  32 #include "XpdfPluginAPI.h"
  33
  34 //------------------------------------------------------------------------
  35
  36 //~ This should use a pool of Objects; change xpdfFreeObj to match.
  37 static Object *allocObj() {
  38   return (Object *)gmalloc(sizeof(Object));
  39 }
  40
  41 //------------------------------------------------------------------------
  42 // Document access functions
  43 //------------------------------------------------------------------------
  44
  45 XpdfObject _xpdfGetInfoDict(XpdfDoc doc) {
  46   Object *obj;
  47
  48   obj = allocObj();
  49   return (XpdfObject)((PDFDoc *)doc)->getDocInfo(obj);
  50 }
  51
  52 XpdfObject _xpdfGetCatalog(XpdfDoc doc) {
  53   Object *obj;
  54
  55   obj = allocObj();
  56   return (XpdfObject)((PDFDoc *)doc)->getXRef()->getCatalog(obj);
  57 }
  58
  59 //------------------------------------------------------------------------
  60 // Object access functions.
  61 //------------------------------------------------------------------------
  62
  63 XpdfBool _xpdfObjIsBool(XpdfObject obj) {
  64   return (XpdfBool)((Object *)obj)->isBool();
  65 }
  66
  67 XpdfBool _xpdfObjIsInt(XpdfObject obj) {
  68   return (XpdfBool)((Object *)obj)->isInt();
  69 }
  70
  71 XpdfBool _xpdfObjIsReal(XpdfObject obj) {
  72   return (XpdfBool)((Object *)obj)->isReal();
  73 }
  74
  75 XpdfBool _xpdfObjIsNumber(XpdfObject obj) {
  76   return (XpdfBool)((Object *)obj)->isNum();
  77 }
  78
  79 XpdfBool _xpdfObjIsString(XpdfObject obj) {
  80   return (XpdfBool)((Object *)obj)->isString();
  81 }
  82
  83 XpdfBool _xpdfObjIsName(XpdfObject obj) {
  84   return (XpdfBool)((Object *)obj)->isName();
  85 }
  86
  87 XpdfBool _xpdfObjIsNull(XpdfObject obj) {
  88   return (XpdfBool)((Object *)obj)->isNull();
  89 }
  90
  91 XpdfBool _xpdfObjIsArray(XpdfObject obj) {
  92   return (XpdfBool)((Object *)obj)->isArray();
  93 }
  94
  95 XpdfBool _xpdfObjIsDict(XpdfObject obj) {
  96   return (XpdfBool)((Object *)obj)->isDict();
  97 }
  98
  99 XpdfBool _xpdfObjIsStream(XpdfObject obj) {
 100   return (XpdfBool)((Object *)obj)->isStream();
 101 }
 102
 103 XpdfBool _xpdfObjIsRef(XpdfObject obj) {
 104   return (XpdfBool)((Object *)obj)->isRef();
 105 }
 106
 107 XpdfBool _xpdfBoolValue(XpdfObject obj) {
 108   return (XpdfBool)((Object *)obj)->getBool();
 109 }
 110
 111 int _xpdfIntValue(XpdfObject obj) {
 112   if (!((Object *)obj)->isInt()) {
 113     return 0;
 114   }
 115   return ((Object *)obj)->getInt();
 116 }
 117
 118 double _xpdfRealValue(XpdfObject obj) {
 119   if (!((Object *)obj)->isReal()) {
 120     return 0;
 121   }
 122   return ((Object *)obj)->getReal();
 123 }
 124
 125 double _xpdfNumberValue(XpdfObject obj) {
 126   if (!((Object *)obj)->isNum()) {
 127     return 0;
 128   }
 129   return ((Object *)obj)->getNum();
 130 }
 131
 132 int _xpdfStringLength(XpdfObject obj) {
 133   if (!((Object *)obj)->isString()) {
 134     return 0;
 135   }
 136   return ((Object *)obj)->getString()->getLength();
 137 }
 138
 139 char *_xpdfStringValue(XpdfObject obj) {
 140   if (!((Object *)obj)->isString()) {
 141     return 0;
 142   }
 143   return ((Object *)obj)->getString()->getCString();
 144 }
 145
 146 char *_xpdfNameValue(XpdfObject obj) {
 147   if (!((Object *)obj)->isName()) {
 148     return NULL;
 149   }
 150   return ((Object *)obj)->getName();
 151 }
 152
 153 int _xpdfArrayLength(XpdfObject obj) {
 154   if (!((Object *)obj)->isArray()) {
 155     return 0;
 156   }
 157   return ((Object *)obj)->arrayGetLength();
 158 }
 159
 160 XpdfObject _xpdfArrayGet(XpdfObject obj, int idx) {
 161   Object *elem;
 162
 163   elem = allocObj();
 164   if (!((Object *)obj)->isArray()) {
 165     return (XpdfObject)elem->initNull();
 166   }
 167   return (XpdfObject)((Object *)obj)->arrayGet(idx, elem);
 168 }
 169
 170 XpdfObject _xpdfDictGet(XpdfObject obj, char *key) {
 171   Object *elem;
 172
 173   elem = allocObj();
 174   if (!((Object *)obj)->isDict()) {
 175     return (XpdfObject)elem->initNull();
 176   }
 177   return (XpdfObject)((Object *)obj)->dictLookup(key, elem);
 178 }
 179
 180 void _xpdfFreeObj(XpdfObject obj) {
 181   ((Object *)obj)->free();
 182   gfree(obj);
 183 }
 184
 185 //------------------------------------------------------------------------
 186 // Memory allocation functions
 187 //------------------------------------------------------------------------
 188
 189 void *_xpdfMalloc(int size) {
 190   return gmalloc(size);
 191 }
 192
 193 void *_xpdfRealloc(void *p, int size) {
 194   return grealloc(p, size);
 195 }
 196
 197 void _xpdfFree(void *p) {
 198   gfree(p);
 199 }
 200
 201 //------------------------------------------------------------------------
 202 // Security handlers
 203 //------------------------------------------------------------------------
 204
 205 void _xpdfRegisterSecurityHandler(XpdfSecurityHandler *handler) {
 206   if (handler->version <= xpdfPluginAPIVersion) {
 207     globalParams->addSecurityHandler(handler);
 208   }
 209 }
 210
 211 //------------------------------------------------------------------------
 212
 213 XpdfPluginVecTable xpdfPluginVecTable = {
 214   xpdfPluginAPIVersion,
 215   &_xpdfGetInfoDict,
 216   &_xpdfGetCatalog,
 217   &_xpdfObjIsBool,
 218   &_xpdfObjIsInt,
 219   &_xpdfObjIsReal,
 220   &_xpdfObjIsString,
 221   &_xpdfObjIsName,
 222   &_xpdfObjIsNull,
 223   &_xpdfObjIsArray,
 224   &_xpdfObjIsDict,
 225   &_xpdfObjIsStream,
 226   &_xpdfObjIsRef,
 227   &_xpdfBoolValue,
 228   &_xpdfIntValue,
 229   &_xpdfRealValue,
 230   &_xpdfStringLength,
 231   &_xpdfStringValue,
 232   &_xpdfNameValue,
 233   &_xpdfArrayLength,
 234   &_xpdfArrayGet,
 235   &_xpdfDictGet,
 236   &_xpdfFreeObj,
 237   &_xpdfMalloc,
 238   &_xpdfRealloc,
 239   &_xpdfFree,
 240   &_xpdfRegisterSecurityHandler,
 241 };
 242
 243 #endif // ENABLE_PLUGINS