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Diffstat (limited to 'debian/htdig/htdig-3.2.0b6/htcommon/HtWordList.cc')
| -rw-r--r-- | debian/htdig/htdig-3.2.0b6/htcommon/HtWordList.cc | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/debian/htdig/htdig-3.2.0b6/htcommon/HtWordList.cc b/debian/htdig/htdig-3.2.0b6/htcommon/HtWordList.cc new file mode 100644 index 00000000..566898c1 --- /dev/null +++ b/debian/htdig/htdig-3.2.0b6/htcommon/HtWordList.cc @@ -0,0 +1,209 @@ +// +// HtWordList.cc +// +// HtWordList: Specialized WordList class that can hold a list +// of words waiting to be inserted in the database. +// +// Part of the ht://Dig package <http://www.htdig.org/> +// Copyright (c) 1995-2004 The ht://Dig Group +// For copyright details, see the file COPYING in your distribution +// or the GNU Library General Public License (LGPL) version 2 or later +// <http://www.gnu.org/copyleft/lgpl.html> +// +// $Id: HtWordList.cc,v 1.7 2004/05/28 13:15:12 lha Exp $ +// + +#ifdef HAVE_CONFIG_H +#include "htconfig.h" +#endif /* HAVE_CONFIG_H */ + +#include "HtWordList.h" +#include "HtWordReference.h" +#include "WordRecord.h" +#include "WordType.h" +#include "HtConfiguration.h" +#include "htString.h" + +#include <stdio.h> +#include <stdlib.h> +#include <ctype.h> + +#ifdef HAVE_STD +#include <iostream> +#include <fstream> +#ifdef HAVE_NAMESPACES +using namespace std; +#endif +#else +#include <iostream.h> +#include <fstream.h> +#endif /* HAVE_STD */ + +#include <errno.h> + +//***************************************************************************** +// HtWordList::~HtWordList() +// +HtWordList::~HtWordList() +{ + delete words; +} + +//***************************************************************************** +// +HtWordList::HtWordList(const HtConfiguration& config_arg) : + WordList(config_arg) +{ + words = new List; +} + +//***************************************************************************** +// +void HtWordList::Replace(const WordReference& arg) +{ + // + // New word. Create a new reference for it and cache it in the object. + // + words->Add(new WordReference(arg)); +} + +//***************************************************************************** +// void HtWordList::Flush() +// Dump the current list of words to the database. After +// the words have been dumped, the list will be destroyed to make +// room for the words of the next document. +// +void HtWordList::Flush() +{ + HtWordReference *wordRef; + + // Provided for backwards compatibility + if (!isopen) + Open(config["word_db"], O_RDWR); + + words->Start_Get(); + while ((wordRef = (HtWordReference *) words->Get_Next())) + { + if (wordRef->Word().length() == 0) { + cerr << "HtWordList::Flush: unexpected empty word\n"; + continue; + } + + Override(*wordRef); + } + + // Cleanup + words->Destroy(); +} + +//***************************************************************************** +// void HtWordList::Skip() +// The current document has disappeared or been modified. +// We do not need to store these words. +// +void HtWordList::Skip() +{ + words->Destroy(); +} + +// +// Callback data dedicated to Dump and dump_word communication +// +class DumpWordData : public Object +{ +public: + DumpWordData(FILE* fl_arg) { fl = fl_arg; } + + FILE* fl; +}; + +//***************************************************************************** +// +// Write the ascii representation of a word occurence. Helper +// of WordList::Dump +// +static int dump_word(WordList *, WordDBCursor &, const WordReference *word, Object &data) +{ + const HtWordReference *word_tmp = (const HtWordReference *)word; + + DumpWordData &info = (DumpWordData &)data; + + word_tmp->Dump(info.fl); + + return OK; +} + +//***************************************************************************** +// int HtWordList::Dump(char* filename) +// +// Write an ascii version of the word database in <filename> +// +int HtWordList::Dump(const String& filename) +{ + FILE *fl; + + if (!isopen) { + cerr << "WordList::Dump: database must be opened first\n"; + return NOTOK; + } + + if((fl = fopen(filename, "w")) == 0) { + perror(form("WordList::Dump: opening %s for writing", (const char*)filename)); + return NOTOK; + } + + HtWordReference::DumpHeader(fl); + DumpWordData data(fl); + WordCursor* search = Cursor(dump_word, &data); + search->Walk(); + delete search; + + fclose(fl); + + return OK; +} + +//***************************************************************************** +// int HtWordList::Load(char* filename) +// +// Read in an ascii version of the word database in <filename> +// +int HtWordList::Load(const String& filename) +{ + FILE *fl; + String data; + HtWordReference *next; + + if (!isopen) { + cerr << "WordList::Load: database must be opened first\n"; + return NOTOK; + } + + if((fl = fopen(filename, "r")) == 0) { + perror(form("WordList::Load: opening %s for reading", (const char*)filename)); + return NOTOK; + } + + if (HtWordReference::LoadHeader(fl) != OK) + { + cerr << "WordList::Load: header is not correct\n"; + return NOTOK; + } + + while (data.readLine(fl)) + { + next = new HtWordReference; + if (next->Load(data) != OK) + { + delete next; + continue; + } + + words->Add(next); + } + + Flush(); + fclose(fl); + + return OK; +} |