- swi-prolog
- library
- filesex.pl -- Extended operations on files
- apply.pl -- Apply predicates on a list
- error.pl -- Error generating support
- shlib.pl -- Utility library for loading foreign objects (DLLs, shared objects)
- lists.pl -- List Manipulation
- pairs.pl -- Operations on key-value lists
- doc_http.pl -- Documentation server
- pldoc.pl -- Process source documentation
- memfile.pl
- operators.pl -- Manage operators
- debug.pl -- Print debug messages and test assertions
- option.pl -- Option list processing
- prolog_source.pl -- Examine Prolog source-files
- socket.pl -- Network socket (TCP and UDP) library
- thread_pool.pl -- Resource bounded thread management
- rbtrees.pl -- Red black trees
- gensym.pl -- Generate unique symbols
- readutil.pl -- Read utilities
- url.pl -- Analysing and constructing URL
- utf8.pl -- UTF-8 encoding/decoding on lists of character codes.
- uri.pl -- Process URIs
- settings.pl -- Setting management
- broadcast.pl -- Event service
- arithmetic.pl -- Extensible arithmetic
- sgml.pl -- SGML, XML and HTML parser
- iostream.pl -- Utilities to deal with streams
- dialect.pl -- Support multiple Prolog dialects
- quasi_quotations.pl -- Define Quasi Quotation syntax
- pure_input.pl -- Pure Input from files and streams
- time.pl -- Time and alarm library
- base64.pl -- Base64 encoding and decoding
- aggregate.pl -- Aggregation operators on backtrackable predicates
- ordsets.pl -- Ordered set manipulation
- oset.pl -- Ordered set manipulation
- www_browser.pl -- Open a URL in the users browser
- process.pl -- Create processes and redirect I/O
- prolog_colour.pl -- Prolog syntax colouring support.
- prolog_xref.pl -- Prolog cross-referencer data collection
- predicate_options.pl -- Access and analyse predicate options
- prolog_clause.pl -- Get detailed source-information about a clause
- occurs.pl -- Finding and counting sub-terms
- listing.pl -- List programs and pretty print clauses
- record.pl -- Access compound arguments by name
- assoc.pl -- Binary associations
- ugraphs.pl -- Graph manipulation library
- xpath.pl -- Select nodes in an XML DOM
- prolog_pack.pl -- A package manager for Prolog
- archive.pl -- Access several archive formats
- rdf.pl
- rdf_parser.pl
- rewrite.pl
- quintus.pl -- Quintus compatibility
- rdf_triple.pl -- Create triples from intermediate representation
- sgml_write.pl -- XML/SGML writer module
- xsdp_types.pl -- XML-Schema primitive types
- thread.pl -- High level thread primitives
- git.pl -- Run GIT commands
- ctypes.pl -- Character code classification
- sha.pl -- SHA secure hashes
- crypt.pl
- persistency.pl -- Provide persistent dynamic predicates
- tty.pl -- Terminal operations
- c14n2.pl -- C14n2 canonical XML documents
- dicts.pl -- Dict utilities
- solution_sequences.pl -- Modify solution sequences
- nb_set.pl -- Non-backtrackable sets
- terms.pl -- Term manipulation
- apply_macros.pl -- Goal expansion rules to avoid meta-calling
- snowball.pl -- The Snowball multi-lingual stemmer library
- sandbox.pl -- Sandboxed Prolog code
- prolog_format.pl -- Analyse format specifications
- when.pl -- Conditional coroutining
- double_metaphone.pl -- Phonetic string matching
- porter_stem.pl
- uuid.pl -- Universally Unique Identifier (UUID) Library
- pcre.pl -- Perl compatible regular expression matching for SWI-Prolog
- backcomp.pl -- Backward compatibility
- system.pl -- System utilities
- rdf_write.pl -- Write RDF/XML from a list of triples
- date.pl -- Process dates and times
- zlib.pl -- Zlib wrapper for SWI-Prolog
- rdf_ntriples.pl -- RDF N-triples parser (obsolete)
- csv.pl -- Process CSV (Comma-Separated Values) data
- dif.pl -- The dif/2 constraint
- ssl.pl -- Secure Socket Layer (SSL) library
- crypto.pl -- Cryptography and authentication library
- ansi_term.pl -- Print decorated text to ANSI consoles
- pengines.pl -- Pengines: Web Logic Programming Made Easy
- charsio.pl -- I/O on Lists of Character Codes
- modules.pl -- Module utility predicates
- term_to_json.pl
- prolog_stack.pl -- Examine the Prolog stack
- statistics.pl -- Get information about resource usage
- editline.pl -- BSD libedit based command line editing
- console_input.pl
- prolog_history.pl -- Per-directory persistent commandline history
- base32.pl -- Base32 encoding and decoding
- edinburgh.pl -- Some traditional Edinburgh predicates
- helpidx.pl
- explain.pl -- Describe Prolog Terms
- edit.pl -- Editor interface
- make.pl -- Reload modified source files
- check.pl -- Consistency checking
- prolog_codewalk.pl -- Prolog code walker
- prolog_metainference.pl -- Infer meta-predicate properties
- prolog_breakpoints.pl -- Manage Prolog break-points
- threadutil.pl -- Interactive thread utilities
- help.pl
- uid.pl -- User and group management on Unix systems
- unix.pl -- Unix specific operations
- syslog.pl -- Unix syslog interface
- main.pl -- Provide entry point for scripts
- md5.pl -- MD5 hashes
- qsave.pl -- Save current program as a state or executable
- prolog_autoload.pl -- Autoload all dependencies
- optparse.pl -- command line parsing
- hash_stream.pl -- Maintain a hash on a stream
- shell.pl -- Elementary shell commands
- win_menu.pl -- Console window menu
- pengines_io.pl -- Provide Prolog I/O for HTML clients
- yall.pl -- Lambda expressions
- prolog_stream.pl -- A stream with Prolog callbacks
- readline.pl -- GNU readline interface
- random.pl -- Random numbers
- doc_files.pl -- Create stand-alone documentation files
- chr.pl
- sort.pl
- files.pl
- writef.pl -- Old-style formatted write
- tabling.pl -- Tabled execution (SLG WAM)
- varnumbers.pl -- Utilities for numbered terms
- library
- menu(+Title, +Options, -Choice) is semidet
- Show a menu. The display is cleared, the title is centered at
the top, the options are displayed and finally the user actions
are parsed and the user's choice is returned. The screen looks
like this:
-------------------------------------------- | | | Title | | | | 1) Option One | | 2) Option Two | | 3) Quit | | | | Your Choice? * | | |
The user selects an item by pressing the number of the item, or the first letter of the option. If more then one option match, the common prefix of the matching options is given and the user is expected to type the next character. On illegal input the screen is flashed (or a beep is given if the terminal can't flash the screen).
Text fields (the title and option texts) are either plain atoms or terms Fmt/Args. In the latter case the argument is transformed into an atom using format/3.
The specification of an option is a term PrologName:UserName. PrologName is an atom, which is returned as choice if the user selects this menu item. UserName is processed as a text field (see above) and displayed. The entries are numbered automatically.
The example above could be defined as:
get_action(Choice) :- menu('Title', [ option_1 : 'Option One' , option_2 : 'Option Two' , quit : 'Quit' ], Choice).