pdf2swf/xpdf/Object.cc

   1 //========================================================================
   2 //
   3 // Object.cc
   4 //
   5 // Copyright 1996-2003 Glyph & Cog, LLC
   6 //
   7 //========================================================================
   8
   9 #include <aconf.h>
  10
  11 #ifdef USE_GCC_PRAGMAS
  12 #pragma implementation
  13 #endif
  14
  15 #include <stddef.h>
  16 #include "Object.h"
  17 #include "Array.h"
  18 #include "Dict.h"
  19 #include "Error.h"
  20 #include "Stream.h"
  21 #include "XRef.h"
  22
  23 //------------------------------------------------------------------------
  24 // Object
  25 //------------------------------------------------------------------------
  26
  27 char *objTypeNames[numObjTypes] = {
  28   "boolean",
  29   "integer",
  30   "real",
  31   "string",
  32   "name",
  33   "null",
  34   "array",
  35   "dictionary",
  36   "stream",
  37   "ref",
  38   "cmd",
  39   "error",
  40   "eof",
  41   "none"
  42 };
  43
  44 #ifdef DEBUG_MEM
  45 int Object::numAlloc[numObjTypes] =
  46   {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
  47 #endif
  48
  49 Object *Object::initArray(XRef *xref) {
  50   initObj(objArray);
  51   array = new Array(xref);
  52   return this;
  53 }
  54
  55 Object *Object::initDict(XRef *xref) {
  56   initObj(objDict);
  57   dict = new Dict(xref);
  58   return this;
  59 }
  60
  61 Object *Object::initDict(Dict *dictA) {
  62   initObj(objDict);
  63   dict = dictA;
  64   dict->incRef();
  65   return this;
  66 }
  67
  68 Object *Object::initStream(Stream *streamA) {
  69   initObj(objStream);
  70   stream = streamA;
  71   return this;
  72 }
  73
  74 Object *Object::copy(Object *obj) {
  75   *obj = *this;
  76   switch (type) {
  77   case objString:
  78     obj->string = string->copy();
  79     break;
  80   case objName:
  81     obj->name = copyString(name);
  82     break;
  83   case objArray:
  84     array->incRef();
  85     break;
  86   case objDict:
  87     dict->incRef();
  88     break;
  89   case objStream:
  90     stream->incRef();
  91     break;
  92   case objCmd:
  93     obj->cmd = copyString(cmd);
  94     break;
  95   default:
  96     break;
  97   }
  98 #ifdef DEBUG_MEM
  99   ++numAlloc[type];
 100 #endif
 101   return obj;
 102 }
 103
 104 Object *Object::fetch(XRef *xref, Object *obj) {
 105   return (type == objRef && xref) ?
 106          xref->fetch(ref.num, ref.gen, obj) : copy(obj);
 107 }
 108
 109 void Object::free() {
 110   switch (type) {
 111   case objString:
 112     delete string;
 113     break;
 114   case objName:
 115     gfree(name);
 116     break;
 117   case objArray:
 118     if (!array->decRef()) {
 119       delete array;
 120     }
 121     break;
 122   case objDict:
 123     if (!dict->decRef()) {
 124       delete dict;
 125     }
 126     break;
 127   case objStream:
 128     if (!stream->decRef()) {
 129       delete stream;
 130     }
 131     break;
 132   case objCmd:
 133     gfree(cmd);
 134     break;
 135   default:
 136     break;
 137   }
 138 #ifdef DEBUG_MEM
 139   --numAlloc[type];
 140 #endif
 141   type = objNone;
 142 }
 143
 144 char *Object::getTypeName() {
 145   return objTypeNames[type];
 146 }
 147
 148 void Object::print(FILE *f) {
 149   Object obj;
 150   int i;
 151
 152   switch (type) {
 153   case objBool:
 154     fprintf(f, "%s", booln ? "true" : "false");
 155     break;
 156   case objInt:
 157     fprintf(f, "%d", intg);
 158     break;
 159   case objReal:
 160     fprintf(f, "%g", real);
 161     break;
 162   case objString:
 163     fprintf(f, "(");
 164     fwrite(string->getCString(), 1, string->getLength(), stdout);
 165     fprintf(f, ")");
 166     break;
 167   case objName:
 168     fprintf(f, "/%s", name);
 169     break;
 170   case objNull:
 171     fprintf(f, "null");
 172     break;
 173   case objArray:
 174     fprintf(f, "[");
 175     for (i = 0; i < arrayGetLength(); ++i) {
 176       if (i > 0)
 177         fprintf(f, " ");
 178       arrayGetNF(i, &obj);
 179       obj.print(f);
 180       obj.free();
 181     }
 182     fprintf(f, "]");
 183     break;
 184   case objDict:
 185     fprintf(f, "<<");
 186     for (i = 0; i < dictGetLength(); ++i) {
 187       fprintf(f, " /%s ", dictGetKey(i));
 188       dictGetValNF(i, &obj);
 189       obj.print(f);
 190       obj.free();
 191     }
 192     fprintf(f, " >>");
 193     break;
 194   case objStream:
 195     fprintf(f, "<stream>");
 196     break;
 197   case objRef:
 198     fprintf(f, "%d %d R", ref.num, ref.gen);
 199     break;
 200   case objCmd:
 201     fprintf(f, "%s", cmd);
 202     break;
 203   case objError:
 204     fprintf(f, "<error>");
 205     break;
 206   case objEOF:
 207     fprintf(f, "<EOF>");
 208     break;
 209   case objNone:
 210     fprintf(f, "<none>");
 211     break;
 212   }
 213 }
 214
 215 void Object::memCheck(FILE *f) {
 216 #ifdef DEBUG_MEM
 217   int i;
 218   int t;
 219
 220   t = 0;
 221   for (i = 0; i < numObjTypes; ++i)
 222     t += numAlloc[i];
 223   if (t > 0) {
 224     fprintf(f, "Allocated objects:\n");
 225     for (i = 0; i < numObjTypes; ++i) {
 226       if (numAlloc[i] > 0)
 227         fprintf(f, "  %-20s: %6d\n", objTypeNames[i], numAlloc[i]);
 228     }
 229   }
 230 #endif
 231 }