Annotation of parser3/src/types/pa_vhashfile.C, revision 1.25
1.1 parser 1: /** @file
2: Parser: @b table class.
3:
1.20 paf 4: Copyright(c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com)
1.19 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.1 parser 6: */
7:
1.25 ! paf 8: static const char* IDENT="$Date: 2003/11/06 10:09:33 $";
1.1 parser 9:
10: #include "pa_vtable.h"
11: #include "pa_vstring.h"
12: #include "pa_vhashfile.h"
13: #include "pa_threads.h"
1.8 parser 14: #include "pa_globals.h"
1.1 parser 15:
16: // methods
17:
1.22 paf 18: void check(const char *step, apr_status_t status) {
19: if(status==APR_SUCCESS)
20: return;
21:
22: throw Exception("todo.todo",
23: 0,
24: "%s error: %d", step, status);
25: }
26:
27: void VHashfile::open(const String& afile_name) {
28: check("apr_sdbm_open", apr_sdbm_open(&db, afile_name.cstr(String::L_FILE_SPEC),
1.25 ! paf 29: APR_WRITE|APR_CREATE|APR_SHARELOCK,
1.22 paf 30: 0664, 0));
31: }
32:
33: VHashfile::~VHashfile() {
34: if(db)
35: check("apr_sdbm_close", apr_sdbm_close(db));
36: }
37:
38: void VHashfile::clear() {
39: }
40:
1.8 parser 41: void VHashfile::put_field(const String& aname, Value *avalue) {
42: time_t time_to_die=0;
43: const String *value_string;
44:
1.23 paf 45: if(HashStringValue *hash=avalue->get_hash()) {
46: if(Value *value_value=hash->get(value_name)) {
1.9 parser 47: if(value_value->get_junction())
1.23 paf 48: throw Exception(0,
49: 0,
50: VALUE_NAME" must not be code");
1.8 parser 51:
52: value_string=&value_value->as_string();
53:
1.23 paf 54: if(Value *expires_value=hash->get(expires_name))
1.8 parser 55: time_to_die=time(0)+(time_t)expires_value->as_double();
56: } else
1.23 paf 57: throw Exception(0,
1.8 parser 58: &aname,
1.23 paf 59: "put hash value must contain ."VALUE_NAME);
1.8 parser 60: } else
61: value_string=&avalue->as_string();
1.5 parser 62:
1.23 paf 63: // get_table_ptr(&aname)->put(aname, *value_string, time_to_die);
64:
65: apr_sdbm_datum_t key;
66: key.dptr=const_cast<char*>(aname.cstr());
1.24 paf 67: key.dsize=aname.length();
1.23 paf 68:
69: apr_sdbm_datum_t value;
70: value.dptr=const_cast<char*>(value_string->cstr());
1.24 paf 71: value.dsize=value_string->length();
1.23 paf 72:
73: // * APR_SDBM_INSERT return an error if the record exists
74: check("apr_sdbm_store", apr_sdbm_store(db, key, value, APR_SDBM_REPLACE));
1.1 parser 75: }
76:
1.11 paf 77: Value *VHashfile::get_field(const String& aname) {
1.23 paf 78: apr_sdbm_datum_t key;
79: key.dptr=const_cast<char*>(aname.cstr());
1.24 paf 80: key.dsize=aname.length();
1.23 paf 81:
82: apr_sdbm_datum_t value;
83:
84: check("apr_sdbm_fetch", apr_sdbm_fetch(db, &value, key));
85:
86: if(value.dptr)
1.24 paf 87: return new VString(*new String(pa_strdup(value.dptr, value.dsize)));
1.3 parser 88: else
89: return 0;
1.24 paf 90: }
91:
92: void VHashfile::remove(const String& aname) {
93: apr_sdbm_datum_t key;
94: key.dptr=const_cast<char*>(aname.cstr());
95: key.dsize=aname.length();
96:
97: check("apr_sdbm_delete", apr_sdbm_delete(db, key));
1.1 parser 98: }
99:
1.25 ! paf 100: HashStringValue *VHashfile::get_hash() {
! 101: HashStringValue& result=*new HashStringValue();
1.4 parser 102:
1.25 ! paf 103: check("apr_sdbm_lock", apr_sdbm_lock(db, APR_FLOCK_SHARED));
! 104: try {
! 105: apr_sdbm_datum_t apkey;
! 106: apr_status_t status;
! 107: if(apr_sdbm_firstkey(db, &apkey)==APR_SUCCESS)
! 108: do {
! 109: apr_sdbm_datum_t apvalue;
! 110: check("apr_sdbm_fetch", apr_sdbm_fetch(db, &apvalue, apkey));
! 111:
! 112: const char *clkey=pa_strdup(apkey.dptr, apkey.dsize);
! 113: const char *clvalue=pa_strdup(apvalue.dptr, apvalue.dsize);
! 114: result.put(clkey, new VString(*new String(clvalue)));
! 115: } while(apr_sdbm_nextkey(db, &apkey)==APR_SUCCESS);
! 116:
! 117: return &result;
! 118: } catch(...) {
! 119: check("apr_sdbm_unlock", apr_sdbm_unlock(db));
! 120: rethrow;
1.4 parser 121: }
122:
1.25 ! paf 123: check("apr_sdbm_unlock", apr_sdbm_unlock(db));
1.1 parser 124: }
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