mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-11-03 06:49:26 +01:00
9428c78d63
Solves issues with systems that e.g. require special options for compilation of programs (e.g. libc programs to find libc startup code) or the actual build has been compiled with options that are incompatible with default ones. Tested changes by building an i386-linux local build and i386-linux->arm-linux cross-builds git-svn-id: trunk@22397 - |
||
|---|---|---|
| .. | ||
| examples | ||
| src | ||
| fpmake.pp | ||
| Makefile | ||
| Makefile.fpc | ||
| README.txt | ||
This directory contains an implementation of an indexing and search mechanism. Architecture: ============= The indexer and search mechanism design is modular: - A storage mechanism - An indexer class - A search class - Text processing classes. The indexer uses a text processing class and a storage mechanism to create a search database. The search class uses the same storage mechanism to search the database. Currently, 3 databases are supported: - In memory database (plus flat file storage) - Firebird database - sqlite database. 3 input text processors are supported: - Plain text - HTML - Pas files. A text processor is selected based on the extension of a file, if a file is processed. It is possible to specify a list of words to ignore per language, and a mask for words to ignore. On top of the file/stream indexer, a database indexer is implemented. It can be used to implement full-text search on a database. Sample programs for all 3 classes (search, index and index DB) are provided in the examples dir. Overview of units: ================== fpindexer: The indexer, search and abstract database engine classes. An abstract SQL storage engine class. ireaderhtml an input engine for HTML files. ireaderpas an input engine for pascal files. ireadertxt an input engine for plain text files. masks Copied from the LCL, to implement masks on words. memindexdb A memory storage engine. sqldbindexdb An abstract SQLDB storage engine. fbindexdb A descendent of the SQLDB storage engine which uses a firebird database. sqliteindexdb SQLite database storage engine. dbindexdb Component to index a database. Overview of classes: ==================== fpindexer: ---------- TFPIndexer: The indexing engine. TCustomFileReader: abstract input engine. TFileHandlersManager: factory for file reader classes. TIgnoreListDef: Word ignore list definition. TIgnoreLists: Collection of ignore lists TFPSearch: the search engine. TCustomIndexDB: Abstract storage engine. TSQLIndexDB: Abstract SQL-Based storage engine. ireaderhtml: ------------ TIReaderHTML: HTML input engine. ireaderpas: ----------- TIReaderPAS: pascal input engine. ireadertxt: ----------- TIReaderTXT: plain text input engine. memindexdb: ----------- TMemIndexDB: In memory storage engine TFileIndexDB: Descendent of TMemIndexDB which stores everything in a flat file using a custom format. sqldbindexdb: ------------- TSQLDBIndexDB: Abstract class for SQLDB-based storage (descendent of TSQLIndexDB) sqliteindexdb: -------------- TSQLiteIndexDB: SQLIte based storage engine, descendent of TSQLIndexDB fbindexdb: ---------- TFBIndexDB TSQLDBIndexDB descendent for Firebird. dbindexdb: ---------- TDBIndexer: Implements a database indexer, using a second database as the index. TIBIndexer: Descendent of TDBIndexer for firebird.