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/home/swipl/lib/swipl/library/pcre.pl
AllApplicationManualNameSummaryHelp

  • swipl
    • library
      • error.pl -- Error generating support
      • apply.pl -- Apply predicates on a list
      • lists.pl -- List Manipulation
      • debug.pl -- Print debug messages and test assertions
      • broadcast.pl -- Event service
      • socket.pl -- Network socket (TCP and UDP) library
      • predicate_options.pl -- Access and analyse predicate options
      • shlib.pl -- Utility library for loading foreign objects (DLLs, shared objects)
      • option.pl -- Option list processing
      • uid.pl
      • unix.pl -- Unix specific operations
      • syslog.pl -- Unix syslog interface
      • thread_pool.pl -- Resource bounded thread management
      • gensym.pl -- Generate unique symbols
      • settings.pl -- Setting management
      • arithmetic.pl -- Extensible arithmetic
      • main.pl -- Provide entry point for scripts
      • readutil.pl -- Read utilities
      • ssl.pl -- Secure Socket Layer (SSL) library
      • crypto.pl -- Cryptography and authentication library
      • filesex.pl -- Extended operations on files
      • doc_http.pl -- Documentation server
      • pldoc.pl -- Process source documentation
      • operators.pl -- Manage operators
      • pairs.pl -- Operations on key-value lists
      • prolog_source.pl -- Examine Prolog source-files
      • sgml.pl -- SGML, XML and HTML parser
      • quasi_quotations.pl -- Define Quasi Quotation syntax
      • uri.pl -- Process URIs
      • url.pl -- Analysing and constructing URL
      • www_browser.pl -- Open a URL in the users browser
      • prolog_colour.pl -- Prolog syntax colouring support.
      • record.pl -- Access compound arguments by name
      • prolog_xref.pl -- Prolog cross-referencer data collection
      • occurs.pl -- Finding and counting sub-terms
      • ordsets.pl -- Ordered set manipulation
      • assoc.pl -- Binary associations
      • ugraphs.pl -- Graph manipulation library
      • memfile.pl
      • xpath.pl -- Select nodes in an XML DOM
      • iostream.pl -- Utilities to deal with streams
      • atom.pl -- Operations on atoms
      • porter_stem.pl
      • solution_sequences.pl -- Modify solution sequences
      • prolog_pack.pl -- A package manager for Prolog
      • prolog_config.pl -- Provide configuration information
      • process.pl -- Create processes and redirect I/O
      • git.pl -- Run GIT commands
      • ctypes.pl -- Character code classification
      • time.pl -- Time and alarm library
      • utf8.pl -- UTF-8 encoding/decoding on lists of character codes.
      • base64.pl -- Base64 encoding and decoding
      • sha.pl -- SHA secure hashes
      • crypt.pl
      • persistency.pl -- Provide persistent dynamic predicates
      • pure_input.pl -- Pure Input from files and streams
      • nb_set.pl -- Non-backtrackable sets
      • xsdp_types.pl -- XML-Schema primitive types
      • uuid.pl -- Universally Unique Identifier (UUID) Library
      • pcre.pl -- Perl compatible regular expression matching for SWI-Prolog
        • re_match/2
        • re_match/3
        • re_matchsub/3
        • re_matchsub/4
        • re_foldl/6
        • re_split/3
        • re_split/4
        • re_replace/4
        • re_replace/5
        • re_compile/3
        • re_flush/0
        • re_config/1
      • aggregate.pl -- Aggregation operators on backtrackable predicates
      • rdf_write.pl -- Write RDF/XML from a list of triples
      • rdf.pl -- RDF/XML parser
      • sgml_write.pl -- XML/SGML writer module
      • archive.pl -- Access several archive formats
      • csv.pl -- Process CSV (Comma-Separated Values) data
      • dialect.pl -- Support multiple Prolog dialects
      • apply_macros.pl -- Goal expansion rules to avoid meta-calling
      • prolog_code.pl -- Utilities for reasoning about code
      • dif.pl -- The dif/2 constraint
      • thread.pl -- High level thread primitives
      • rdf_triple.pl -- Create triples from intermediate representation
      • rdf_parser.pl
      • rewrite_term.pl
      • rbtrees.pl -- Red black trees
      • nb_rbtrees.pl -- Non-backtrackable operations on red black trees
      • pengines.pl -- Pengines: Web Logic Programming Made Easy
      • yall.pl -- Lambda expressions
      • sandbox.pl -- Sandboxed Prolog code
      • prolog_format.pl -- Analyse format specifications
      • random.pl -- Random numbers
      • pengines_io.pl -- Provide Prolog I/O for HTML clients
      • zlib.pl -- Zlib wrapper for SWI-Prolog
      • bdb.pl -- Berkeley DB interface
      • hash_stream.pl -- Maintain a hash on a stream
      • md5.pl -- MD5 hashes
      • pprint.pl -- Pretty Print Prolog terms
      • modules.pl -- Module utility predicates
      • lazy_lists.pl -- Lazy list handling
      • edinburgh.pl -- Some traditional Edinburgh predicates
      • prolog_clause.pl -- Get detailed source-information about a clause
      • prolog_breakpoints.pl -- Manage Prolog break-points
      • dicts.pl -- Dict utilities
      • backcomp.pl -- Backward compatibility
      • paxos.pl -- A Replicated Data Store
      • doc_latex.pl -- PlDoc LaTeX backend
      • system.pl -- System utilities
      • quintus.pl -- Quintus compatibility
      • prolog_debug.pl -- User level debugging tools
      • streampool.pl -- Input multiplexing
      • stomp.pl -- STOMP client.
      • date.pl -- Process dates and times
      • statistics.pl -- Get information about resource usage
      • listing.pl -- List programs and pretty print clauses
      • snowball.pl -- The Snowball multi-lingual stemmer library
      • unicode.pl -- Unicode string handling
      • heaps.pl -- heaps/priority queues
      • files.pl
      • optparse.pl -- command line parsing
      • threadutil.pl -- Interactive thread utilities
      • edit.pl -- Editor interface
      • help.pl -- Text based manual
      • fastrw.pl -- Fast reading and writing of terms
      • redis.pl -- Redis client
      • prolog_stack.pl -- Examine the Prolog stack
      • editline.pl -- BSD libedit based command line editing
      • odbc.pl
      • jpl.pl -- A Java interface for SWI Prolog 7.x
      • zip.pl -- Access resource ZIP archives
      • hashtable.pl -- Hash tables
      • ansi_term.pl -- Print decorated text to ANSI consoles
      • isub.pl -- isub: a string similarity measure
      • terms.pl -- Term manipulation
      • check.pl -- Consistency checking
      • prolog_codewalk.pl -- Prolog code walker
      • prolog_autoload.pl -- Autoload all dependencies
      • shell.pl -- Elementary shell commands
      • wfs.pl -- Well Founded Semantics interface
      • portray_text.pl -- Portray text
      • prolog_jiti.pl -- Just In Time Indexing (JITI) utilities
      • strings.pl -- String utilities
      • plunit.pl -- Unit Testing
      • xmlenc.pl -- XML encryption library
      • prolog_metainference.pl -- Infer meta-predicate properties
      • c14n2.pl -- C14n2 canonical XML documents
      • charsio.pl -- I/O on Lists of Character Codes
      • make.pl -- Reload modified source files
      • writef.pl -- Old-style formatted write
      • qsave.pl -- Save current program as a state or executable
      • sort.pl
      • tables.pl -- XSB interface to tables
      • varnumbers.pl -- Utilities for numbered terms
      • when.pl -- Conditional coroutining
      • intercept.pl -- Intercept and signal interface
      • term_to_json.pl
      • mqi.pl
      • increval.pl -- Incremental dynamic predicate modification
      • explain.pl -- Describe Prolog Terms
      • prolog_wrap.pl -- Wrapping predicates
      • win_menu.pl -- Console window menu
      • tty.pl -- Terminal operations
      • test_cover.pl -- Clause coverage analysis
      • table.pl
      • udp_broadcast.pl -- A UDP broadcast proxy
      • xmldsig.pl -- XML Digital signature
      • redis_streams.pl -- Using Redis streams
      • yaml.pl -- Process YAML data
      • prolog_trace.pl -- Print access to predicates
      • prolog_stream.pl -- A stream with Prolog callbacks
      • base32.pl -- Base32 encoding and decoding
      • doc_files.pl -- Create stand-alone documentation files
      • prolog_history.pl -- Per-directory persistent commandline history
      • readline.pl -- GNU readline interface
      • coinduction.pl -- Co-Logic Programming
      • codesio.pl -- I/O on Lists of Character Codes
      • protobufs.pl -- Google's Protocol Buffers ("protobufs")
      • rlimit.pl
      • double_metaphone.pl -- Phonetic string matching
      • oset.pl -- Ordered set manipulation
      • cgi.pl -- Read CGI parameters
      • pdt_console.pl
      • pwp.pl -- Prolog Well-formed Pages
 re_config(+Term)
Extract configuration information from the pcre library. Term is of the form Name(Value). Name is derived from the PCRE_CONFIG_* constant after removing PCRE_CONFIG_ and mapping the name to lower case, e.g. utf8, unicode_properties, etc. Value is a Prolog boolean, integer, or atom. For boolean (1 or 0) values, true or false is returned.

re_config/1 will backtrack through all the possible configuration values if its argument is a variable. If an unknown option is specified, re_config/1 fails.

Non-compatible changes between PCRE1 and PCRE2 because numeric values changed: bsr and newline have been replaced by bsr2 and newline2:

  • bsr2 - previously bsr returned 0 or 1; now returns unicode or anycrlf
  • newline2 - previously newline returned an integer, now returns cr, lf, crlf, any, anycrlf, nul

Term values are as follows. Some values might not exist, depending on the version of PCRE2 and the options it was built with.

  • bsr2 The character sequences that the \R escape sequence matches by default. Replaces bsr option from PCRE1, which is not compatible.
  • compiled_widths An integer whose lower bits indicate which code unit widths were selected when PCRE2 was built. The 1-bit indicates 8-bit support, and the 2-bit and 4-bit indicate 16-bit and 32-bit support, respectively. The 1 bit should always be set because the wrapper code requires 8 bit support.
  • depthlimit
  • heaplimit
  • jit true if just-in-time compiling is available.
  • jittarget A string containing the name of the architecture for which the JIT compiler is configured. e.g., 'x86 64bit (little endian + unaligned)'.
  • linksize
  • matchlimit
  • never_backslash_c
  • newline2 An atom whose value specifies the default character sequence that is recognized as meaning "newline" (cr, lf, crlf, any, anycrlf, nul). Replaces newline option from PCRE1, which is not compatible.
  • parenslimit
  • stackrecurse
  • unicode Always true
  • unicode_version The unicode version as an atom, e.g. '12.1.0'.
  • utf8 - synonym for unicode
  • parens_limit
  • version The version information as an atom, containing the PCRE version number and release date, e.g. '10.34 2019-11-21'.

    For backwards compatibility with PCRE1, the following are accepted, but are deprecated:

    • utf8 - synonym for unicode
    • link_size - synonym for linksize
    • match_limit - synonym for matchlimit
    • parens_limit - synonym for parenslimit
    • unicode_properties - always true

    The following have been removed because they don't exist in PCRE2 and don't seem to have any meaningful use in PCRE1:

    • posix_malloc_threshold
    • match_limit_recursion
ClioPatria (version V3.1.1-42-gd6a756b-DIRTY)