pdftops/XpdfPluginAPI.cxx

   1 //========================================================================
   2 //
   3 // XpdfPluginAPI.cc
   4 //
   5 // Copyright 2004 Glyph & Cog, LLC
   6 //
   7 //========================================================================
   8
   9 #include <config.h>
  10
  11 #ifdef ENABLE_PLUGINS
  12
  13 #include "gmem.h"
  14 #include "GlobalParams.h"
  15 #include "Object.h"
  16 #include "PDFDoc.h"
  17 #ifdef WIN32
  18 #include "WinPDFCore.h"
  19 #else
  20 #include "XPDFCore.h"
  21 #endif
  22 #include "XpdfPluginAPI.h"
  23
  24 //------------------------------------------------------------------------
  25
  26 //~ This should use a pool of Objects; change xpdfFreeObj to match.
  27 static Object *allocObj() {
  28   return (Object *)gmalloc(sizeof(Object));
  29 }
  30
  31 //------------------------------------------------------------------------
  32 // Document access functions
  33 //------------------------------------------------------------------------
  34
  35 XpdfObject _xpdfGetInfoDict(XpdfDoc doc) {
  36   Object *obj;
  37
  38   obj = allocObj();
  39   return (XpdfObject)((PDFDoc *)doc)->getDocInfo(obj);
  40 }
  41
  42 XpdfObject _xpdfGetCatalog(XpdfDoc doc) {
  43   Object *obj;
  44
  45   obj = allocObj();
  46   return (XpdfObject)((PDFDoc *)doc)->getXRef()->getCatalog(obj);
  47 }
  48
  49 #ifdef _WIN32
  50
  51 HWND _xpdfWin32GetWindow(XpdfDoc doc) {
  52   WinPDFCore *core;
  53
  54   if (!(core = (WinPDFCore *)((PDFDoc *)doc)->getGUIData())) {
  55     return NULL;
  56   }
  57   return core->getDrawFrame();
  58 }
  59
  60 #else
  61
  62 Widget _xpdfXGetWindow(XpdfDoc doc) {
  63   XPDFCore *core;
  64
  65   if (!(core = (XPDFCore *)((PDFDoc *)doc)->getGUIData())) {
  66     return NULL;
  67   }
  68   return core->getWidget();
  69 }
  70
  71 #endif
  72
  73 //------------------------------------------------------------------------
  74 // Object access functions.
  75 //------------------------------------------------------------------------
  76
  77 XpdfBool _xpdfObjIsBool(XpdfObject obj) {
  78   return (XpdfBool)((Object *)obj)->isBool();
  79 }
  80
  81 XpdfBool _xpdfObjIsInt(XpdfObject obj) {
  82   return (XpdfBool)((Object *)obj)->isInt();
  83 }
  84
  85 XpdfBool _xpdfObjIsReal(XpdfObject obj) {
  86   return (XpdfBool)((Object *)obj)->isReal();
  87 }
  88
  89 XpdfBool _xpdfObjIsNumber(XpdfObject obj) {
  90   return (XpdfBool)((Object *)obj)->isNum();
  91 }
  92
  93 XpdfBool _xpdfObjIsString(XpdfObject obj) {
  94   return (XpdfBool)((Object *)obj)->isString();
  95 }
  96
  97 XpdfBool _xpdfObjIsName(XpdfObject obj) {
  98   return (XpdfBool)((Object *)obj)->isName();
  99 }
 100
 101 XpdfBool _xpdfObjIsNull(XpdfObject obj) {
 102   return (XpdfBool)((Object *)obj)->isNull();
 103 }
 104
 105 XpdfBool _xpdfObjIsArray(XpdfObject obj) {
 106   return (XpdfBool)((Object *)obj)->isArray();
 107 }
 108
 109 XpdfBool _xpdfObjIsDict(XpdfObject obj) {
 110   return (XpdfBool)((Object *)obj)->isDict();
 111 }
 112
 113 XpdfBool _xpdfObjIsStream(XpdfObject obj) {
 114   return (XpdfBool)((Object *)obj)->isStream();
 115 }
 116
 117 XpdfBool _xpdfObjIsRef(XpdfObject obj) {
 118   return (XpdfBool)((Object *)obj)->isRef();
 119 }
 120
 121 XpdfBool _xpdfBoolValue(XpdfObject obj) {
 122   return (XpdfBool)((Object *)obj)->getBool();
 123 }
 124
 125 int _xpdfIntValue(XpdfObject obj) {
 126   if (!((Object *)obj)->isInt()) {
 127     return 0;
 128   }
 129   return ((Object *)obj)->getInt();
 130 }
 131
 132 double _xpdfRealValue(XpdfObject obj) {
 133   if (!((Object *)obj)->isReal()) {
 134     return 0;
 135   }
 136   return ((Object *)obj)->getReal();
 137 }
 138
 139 double _xpdfNumberValue(XpdfObject obj) {
 140   if (!((Object *)obj)->isNum()) {
 141     return 0;
 142   }
 143   return ((Object *)obj)->getNum();
 144 }
 145
 146 int _xpdfStringLength(XpdfObject obj) {
 147   if (!((Object *)obj)->isString()) {
 148     return 0;
 149   }
 150   return ((Object *)obj)->getString()->getLength();
 151 }
 152
 153 char *_xpdfStringValue(XpdfObject obj) {
 154   if (!((Object *)obj)->isString()) {
 155     return 0;
 156   }
 157   return ((Object *)obj)->getString()->getCString();
 158 }
 159
 160 char *_xpdfNameValue(XpdfObject obj) {
 161   if (!((Object *)obj)->isName()) {
 162     return NULL;
 163   }
 164   return ((Object *)obj)->getName();
 165 }
 166
 167 int _xpdfArrayLength(XpdfObject obj) {
 168   if (!((Object *)obj)->isArray()) {
 169     return 0;
 170   }
 171   return ((Object *)obj)->arrayGetLength();
 172 }
 173
 174 XpdfObject _xpdfArrayGet(XpdfObject obj, int idx) {
 175   Object *elem;
 176
 177   elem = allocObj();
 178   if (!((Object *)obj)->isArray()) {
 179     return (XpdfObject)elem->initNull();
 180   }
 181   return (XpdfObject)((Object *)obj)->arrayGet(idx, elem);
 182 }
 183
 184 XpdfObject _xpdfDictGet(XpdfObject obj, char *key) {
 185   Object *elem;
 186
 187   elem = allocObj();
 188   if (!((Object *)obj)->isDict()) {
 189     return (XpdfObject)elem->initNull();
 190   }
 191   return (XpdfObject)((Object *)obj)->dictLookup(key, elem);
 192 }
 193
 194 void _xpdfFreeObj(XpdfObject obj) {
 195   ((Object *)obj)->free();
 196   gfree(obj);
 197 }
 198
 199 //------------------------------------------------------------------------
 200 // Memory allocation functions
 201 //------------------------------------------------------------------------
 202
 203 void *_xpdfMalloc(int size) {
 204   return gmalloc(size);
 205 }
 206
 207 void *_xpdfRealloc(void *p, int size) {
 208   return grealloc(p, size);
 209 }
 210
 211 void _xpdfFree(void *p) {
 212   gfree(p);
 213 }
 214
 215 //------------------------------------------------------------------------
 216 // Security handlers
 217 //------------------------------------------------------------------------
 218
 219 void _xpdfRegisterSecurityHandler(XpdfSecurityHandler *handler) {
 220   if (handler->version <= xpdfPluginAPIVersion) {
 221     globalParams->addSecurityHandler(handler);
 222   }
 223 }
 224
 225 //------------------------------------------------------------------------
 226
 227 XpdfPluginVecTable xpdfPluginVecTable = {
 228   xpdfPluginAPIVersion,
 229   &_xpdfGetInfoDict,
 230   &_xpdfGetCatalog,
 231 #ifdef _WIN32
 232   &_xpdfWin32GetWindow,
 233 #else
 234   &_xpdfXGetWindow,
 235 #endif
 236   &_xpdfObjIsBool,
 237   &_xpdfObjIsInt,
 238   &_xpdfObjIsReal,
 239   &_xpdfObjIsString,
 240   &_xpdfObjIsName,
 241   &_xpdfObjIsNull,
 242   &_xpdfObjIsArray,
 243   &_xpdfObjIsDict,
 244   &_xpdfObjIsStream,
 245   &_xpdfObjIsRef,
 246   &_xpdfBoolValue,
 247   &_xpdfIntValue,
 248   &_xpdfRealValue,
 249   &_xpdfStringLength,
 250   &_xpdfStringValue,
 251   &_xpdfNameValue,
 252   &_xpdfArrayLength,
 253   &_xpdfArrayGet,
 254   &_xpdfDictGet,
 255   &_xpdfFreeObj,
 256   &_xpdfMalloc,
 257   &_xpdfRealloc,
 258   &_xpdfFree,
 259   &_xpdfRegisterSecurityHandler,
 260 };
 261
 262 #endif // ENABLE_PLUGINS