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Annotation of parser3/src/types/pa_vhashfile.h, revision 1.18

1.1       parser      1: /** @file
                      2:        Parser: @b hashfile parser type decl.
                      3: 
1.17      paf         4:        Copyright (c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com)
1.15      paf         5:        Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.1       parser      6: */
                      7: 
                      8: #ifndef PA_VHASHFILE_H
                      9: #define PA_VHASHFILE_H
                     10: 
1.18    ! paf        11: static const char* IDENT_VHASHFILE_H="$Date: 2003/11/06 08:22:50 $";
1.17      paf        12: 
1.1       parser     13: #include "classes.h"
                     14: #include "pa_value.h"
                     15: #include "pa_hash.h"
                     16: #include "pa_vint.h"
1.17      paf        17: 
                     18: #include "apr_sdbm.h"
                     19: 
                     20: // defines
                     21: 
                     22: #define VHASHFILE_TYPE "hashfile"
1.1       parser     23: 
1.7       parser     24: // externs
                     25: 
1.17      paf        26: extern Methoded *hashfile_class;
1.1       parser     27: 
1.7       parser     28: // forwards
                     29: 
                     30: class Autosave_marked_to_cancel_cache ;
                     31: 
1.17      paf        32: /// value of type 'hashfile', implemented with SDBM library bundled in ../libs/sdbm
                     33: class VHashfile : public VStateless_object, PA_Cleaned {
1.1       parser     34: public: // value
                     35: 
1.17      paf        36:        override const char *type() const { return VHASHFILE_TYPE; }
                     37:        override VStateless_class *get_class() { return hashfile_class; }
1.1       parser     38: 
                     39:        /// VHashfile: true
1.17      paf        40:        override bool is_defined() const { return true; }
1.1       parser     41: 
                     42:        /// VHashfile: convert to VHash
1.17      paf        43:        override HashStringValue *get_hash(const String *source);
1.1       parser     44: 
                     45:        /// VHashfile: (key)=value
1.17      paf        46:        override Value* get_element(const String& aname, Value& aself, bool looking_up) { 
1.1       parser     47:                // $CLASS,$method
1.17      paf        48:                if(Value *result=VStateless_object::get_element(aname, aself, looking_up))
1.1       parser     49:                        return result;
                     50:                
                     51:                // $element
1.17      paf        52:                return get_field(aname);
1.1       parser     53:        }
                     54:        
1.5       parser     55:        /// VHashfile: (key)=value, (key)=(value+expires)
1.17      paf        56:        override bool put_element(const String& aname, Value* avalue, bool /*replace*/) { 
                     57:                put_field(aname, avalue);
                     58:                return false; // nobody is supposed to derive from hashfile, so does not matter
1.6       parser     59:        }
1.1       parser     60: 
                     61: public: // usage
                     62: 
1.17      paf        63:        VHashfile(): db(0) {}
1.18    ! paf        64:        override ~VHashfile();
1.9       paf        65: 
1.17      paf        66:        void open(const String& afile_name);
1.1       parser     67: 
1.17      paf        68:        void clear();
1.9       paf        69: 
1.1       parser     70: private:
                     71: 
1.9       paf        72:        Value *get_field(const String& aname);
                     73:        void put_field(const String& aname, Value *avalue);
1.1       parser     74: 
                     75: private:
                     76: 
1.17      paf        77:        apr_sdbm_t *db;
                     78: 
1.1       parser     79: };
                     80: 
                     81: #endif