statein.h

00001 //
00002 // statein.h
00003 //
00004 // Copyright (C) 1998 Limit Point Systems, Inc.
00005 //
00006 // Author: Curtis Janssen <cljanss@limitpt.com>
00007 // Maintainer: LPS
00008 //
00009 // This file is part of the SC Toolkit.
00010 //
00011 // The SC Toolkit is free software; you can redistribute it and/or modify
00012 // it under the terms of the GNU Library General Public License as published by
00013 // the Free Software Foundation; either version 2, or (at your option)
00014 // any later version.
00015 //
00016 // The SC Toolkit is distributed in the hope that it will be useful,
00017 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00018 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00019 // GNU Library General Public License for more details.
00020 //
00021 // You should have received a copy of the GNU Library General Public License
00022 // along with the SC Toolkit; see the file COPYING.LIB.  If not, write to
00023 // the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
00024 //
00025 // The U.S. Government is granted a limited license as per AL 91-7.
00026 //
00027 
00028 #ifndef _util_state_statein_h
00029 #define _util_state_statein_h
00030 
00031 #ifdef __GNUC__
00032 #pragma interface
00033 #endif
00034 
00035 #include <string>
00036 #include <vector>
00037 #include <map>
00038 
00039 #include <util/state/state.h>
00040 #include <util/keyval/keyval.h>
00041 
00042 namespace sc {
00043 
00044 class StateInData {
00045   public:
00046     Ref<SavableState> ptr;
00047     int size;
00048     int type;
00049     int offset;
00050 
00051     StateInData(): size(0), type(0), offset(0) {}
00052 };
00053 
00054 class StateClassData {
00055   public:
00056     int version;
00057     char *name;
00058     const ClassDesc *classdesc;
00059     int ninstance;
00060   public:
00061     StateClassData(int v=-1, const ClassDesc *c=0, char *name=0):
00062       version(v), name(name), classdesc(c), ninstance(0) {}
00063     StateClassData(const StateClassData &d) { operator=(d); }
00064     ~StateClassData();
00065     StateClassData &operator=(const StateClassData &d);
00066 };
00067 
00070 class StateIn:  public DescribedClass {
00071     friend class SavableState;
00072     friend class TranslateDataIn;
00073   private:
00074     // do not allow copy constructor or assignment
00075     StateIn(const StateIn&);
00076     void operator=(const StateIn&);
00077     int have_cd_;
00078     int dir_loc_;
00079     char key_[KeyVal::MaxKeywordLength];
00080     int keylength_;
00081   protected:
00082     Ref<KeyVal> override_;
00083     TranslateDataIn *translate_;
00084     std::map<int,StateInData> ps_;
00085     int expected_object_num_;
00086     std::map<ClassDescP,int> classidmap_;
00087     std::map<int,StateClassData> classdatamap_;
00088     int nextclassid_;
00089     int node_to_node_;
00090     int version_;
00091     int date_;
00092     char userid_[9];
00093     char format_;
00094     virtual int get_array_void(void*,int);
00095 
00096     int push_key(const char *key);
00097     void pop_key(int n) { key_[n] = '\0'; keylength_ = n; }
00098     const char *key() { return key_; }
00099 
00100     void get_directory();
00101     int directory_location() const { return dir_loc_; }
00102     void find_and_get_directory();
00103 
00104     // The following members are called by friend SavableState
00105 
00111     virtual int getobject(Ref<SavableState> &);
00112 
00114     virtual int dir_getobject(Ref<SavableState> &, const char *name);
00115 
00120     virtual void haveobject(int,const Ref<SavableState> &);
00121 
00124     virtual void nextobject(int);
00125     virtual void haveobject(const Ref<SavableState> &);
00126 
00127     void have_classdesc() { have_cd_ = 1; }
00128     int need_classdesc() { int tmp = have_cd_; have_cd_ = 0; return !tmp; }
00129 
00134     virtual int get(const ClassDesc**);
00135   public:
00136     StateIn();
00137     virtual ~StateIn();
00138 
00141     virtual void get_header();
00142 
00145     virtual int version(const ClassDesc*);
00146     
00148     virtual int getstring(char*&);
00149     
00151     virtual int get(std::string&);
00152 
00154     virtual int get(char&r, const char *keyword = 0);
00155     virtual int get(unsigned int&r, const char *keyword = 0);
00156     virtual int get(int&r, const char *keyword = 0);
00157     virtual int get(bool&r, const char *keyword = 0);
00158     virtual int get(float&r, const char *keyword = 0);
00159     virtual int get(double&r, const char *keyword = 0);
00162     virtual int get(char*&);
00163     virtual int get(unsigned int*&);
00164     virtual int get(int*&);
00165     virtual int get(float*&);
00166     virtual int get(double*&);
00169     virtual int get_array_char(char*p,int size);
00170     virtual int get_array_uint(unsigned int*p,int size);
00171     virtual int get_array_int(int*p,int size);
00172     virtual int get_array_float(float*p,int size);
00173     virtual int get_array_double(double*p,int size);
00174 
00176     template <class T>
00177     int get(typename std::vector<T> &v) {
00178       int l;
00179       int r = get(l);
00180       if (l) { v.resize(l); for (int i=0; i<l; i++) r += get(v[i]); }
00181       return r;
00182     }
00183 
00188     int node_to_node() const { return node_to_node_; }
00189 
00191     virtual int use_directory();
00192 
00194     virtual int tell();
00197     virtual void seek(int);
00200     virtual int seekable();
00201     int has_directory() const { return dir_loc_ != 0; }
00202 
00205     virtual void list_objects(std::ostream& = ExEnv::out0());
00206 
00209     void set_override(const Ref<KeyVal>&kv) { override_ = kv; }
00211     const Ref<KeyVal> &override() const { return override_; }
00212   };
00213 
00214 }
00215 
00216 #endif
00217 
00218 // Local Variables:
00219 // mode: c++
00220 // c-file-style: "CLJ"
00221 // End:

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