WordContext.cc

00001 //
00002 // WordContext.cc 
00003 //
00004 // WordContext: call Initialize for all classes that need to.
00005 // This will enable the Instance() static member
00006 // of each to return a properly allocated and configured 
00007 // object.
00008 //
00009 // Part of the ht://Dig package <http://www.htdig.org/>
00010 // Copyright (c) 1999, 2000, 2001 The ht://Dig Group
00011 // For copyright details, see the file COPYING in your distribution
00012 // or the GNU General Public License version 2 or later
00013 // <http://www.gnu.org/copyleft/gpl.html>
00014 //
00015 // $Id: WordContext_8cc-source.html,v 1.1 2008年06月08日 10:12:59 sebdiaz Exp $
00016 //
00017 
00018 #ifdef HAVE_CONFIG_H
00019 #include "config.h"
00020 #endif /* HAVE_CONFIG_H */
00021 
00022 #include <stdlib.h>
00023 #include <sys/stat.h>
00024 #include <errno.h>
00025 
00026 #include "WordContext.h"
00027 #include "WordListOne.h"
00028 #include "WordMonitor.h"
00029 
00030 void WordContext::Initialize(const Configuration &config)
00031 {
00032 Finish();
00033 configuration = new Configuration(config);
00034 type = new WordType(*configuration);
00035 key_info = new WordKeyInfo(*configuration);
00036 record_info = new WordRecordInfo(*configuration);
00037 db_info = new WordDBInfo(*configuration);
00038 if(db_info->dbenv) db_info->dbenv->app_private = (void*)this;
00039 if(config.Boolean("wordlist_monitor"))
00040 monitor = new WordMonitor(*configuration);
00041 }
00042 
00043 int WordContext::Initialize(const ConfigDefaults* config_defaults /* = 0 */)
00044 {
00045 Configuration *config = new Configuration();
00046 
00047 if(config_defaults)
00048 config->Defaults(config_defaults);
00049 
00050 String filename = ConfigFile();
00051 
00052 if(!filename.empty())
00053 config->Read(filename);
00054 
00055 Initialize(*config);
00056 
00057 delete config;
00058 
00059 return OK;
00060 }
00061 
00062 int WordContext::ReInitialize()
00063 {
00064 if(type) delete type;
00065 type = 0;
00066 if(key_info) delete key_info;
00067 key_info = 0;
00068 if(record_info) delete record_info;
00069 record_info = 0;
00070 if(db_info) delete db_info;
00071 db_info = 0;
00072 if(monitor) delete monitor;
00073 monitor = 0;
00074 
00075 Configuration& config = *configuration;
00076 
00077 type = new WordType(config);
00078 key_info = new WordKeyInfo(config);
00079 record_info = new WordRecordInfo(config);
00080 db_info = new WordDBInfo(config);
00081 if(db_info->dbenv) db_info->dbenv->app_private = (void*)this;
00082 if(config.Boolean("wordlist_monitor")) {
00083 monitor = new WordMonitor(config);
00084 GetDBInfo().dbenv->mp_monitor = monitor;
00085 }
00086 
00087 return OK;
00088 }
00089 
00090 void WordContext::Finish()
00091 {
00092 if(type) delete type;
00093 type = 0;
00094 if(key_info) delete key_info;
00095 key_info = 0;
00096 if(record_info) delete record_info;
00097 record_info = 0;
00098 if(db_info) delete db_info;
00099 db_info = 0;
00100 if(monitor) delete monitor;
00101 monitor = 0;
00102 if(configuration) delete configuration;
00103 configuration = 0;
00104 }
00105 
00106 WordList* WordContext::List()
00107 {
00108 #if 0
00109 if(configuration->Boolean("wordlist_multi"))
00110 return new WordListMulti(this);
00111 else
00112 #endif
00113 return new WordListOne(this);
00114 }
00115 
00116 WordReference* WordContext::Word()
00117 {
00118 return new WordReference(this);
00119 }
00120 WordReference* WordContext::Word(const String& key0, const String& record0)
00121 {
00122 return new WordReference(this, key0, record0);
00123 }
00124 WordReference* WordContext::Word(const String& word)
00125 {
00126 return new WordReference(this, word);
00127 }
00128 
00129 WordRecord* WordContext::Record()
00130 {
00131 return new WordRecord(this);
00132 }
00133 
00134 WordKey* WordContext::Key()
00135 {
00136 return new WordKey(this);
00137 }
00138 WordKey* WordContext::Key(const String& word)
00139 {
00140 return new WordKey(this, word);
00141 }
00142 
00143 WordKey* WordContext::Key(const WordKey& other)
00144 {
00145 return new WordKey(other);
00146 }
00147 
00148 String WordContext::ConfigFile()
00149 {
00150 String filename;
00151 //
00152 // Check file pointed by MIFLUZ_CONFIG environment variable
00153 //
00154 if(getenv("MIFLUZ_CONFIG")) {
00155 filename << getenv("MIFLUZ_CONFIG");
00156 struct stat statbuf;
00157 if(stat((char*)filename, &statbuf) < 0) {
00158 if(errno != ENOENT) {
00159 fprintf(stderr, "WordContext::ConfigFile: MIFLUZ_CONFIG could not stat %s\n", (char*)filename);
00160 perror("");
00161 return NOTOK;
00162 }
00163 filename.trunc();
00164 }
00165 }
00166 //
00167 // Check for ~/.mifluz
00168 //
00169 if(filename.empty()) {
00170 const char* home = getenv("HOME");
00171 if(home) {
00172 filename << home << "/.mifluz";
00173 struct stat statbuf;
00174 if(stat((char*)filename, &statbuf) < 0) {
00175 if(errno != ENOENT) {
00176 fprintf(stderr, "WordContext::ConfigFile: could not stat %s ", (char*)filename);
00177 perror("");
00178 return NOTOK;
00179 }
00180 filename.trunc();
00181 }
00182 }
00183 }
00184 //
00185 // Check for system wide CONFIG_FILE
00186 //
00187 if(filename.empty()) {
00188 filename << CONFIG_FILE;
00189 struct stat statbuf;
00190 if(stat((char*)filename, &statbuf) < 0) {
00191 if(errno != ENOENT) {
00192 fprintf(stderr, "WordContext::ConfigFile: could not stat %s ", (char*)filename);
00193 perror("");
00194 return NOTOK;
00195 }
00196 filename.trunc();
00197 }
00198 }
00199 
00200 return filename;
00201 }