- swipl
- library
- error.pl
- debug.pl
- apply.pl
- lists.pl
- broadcast.pl -- Event service
- predicate_options.pl -- Access and analyse predicate options
- shlib.pl -- Utility library for loading foreign objects (DLLs, shared objects)
- option.pl -- Option list processing
- thread_pool.pl -- Resource bounded thread management
- gensym.pl -- Generate unique symbols
- settings.pl
- arithmetic.pl
- main.pl -- Provide entry point for scripts
- readutil.pl -- Read utilities
- operators.pl -- Manage operators
- pairs.pl -- Operations on key-value lists
- prolog_source.pl -- Examine Prolog source-files
- quasi_quotations.pl -- Define Quasi Quotation syntax
- 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
- iostream.pl -- Utilities to deal with streams
- atom.pl -- Operations on atoms
- prolog_pack.pl -- A package manager for Prolog
- solution_sequences.pl -- Modify solution sequences
- git.pl -- Run GIT commands
- ctypes.pl -- Character code classification
- utf8.pl -- UTF-8 encoding/decoding on lists of character codes.
- base64.pl -- Base64 encoding and decoding
- persistency.pl -- Provide persistent dynamic predicates
- pure_input.pl -- Pure Input from files and streams
- nb_set.pl -- Non-backtrackable sets
- aggregate.pl -- Aggregation operators on backtrackable predicates
- csv.pl -- Process CSV (Comma-Separated Values) data
- dialect.pl -- Support multiple Prolog dialects
- apply_macros.pl -- Goal expansion rules to avoid meta-calling
- yall.pl -- Lambda expressions
- prolog_code.pl -- Utilities for reasoning about code
- dif.pl -- The dif/2 constraint
- thread.pl -- High level thread primitives
- rbtrees.pl -- Red black trees
- nb_rbtrees.pl -- Non-backtrackable operations on red black trees
- random.pl -- Random numbers
- sandbox.pl -- Sandboxed Prolog code
- prolog_format.pl -- Analyse format specifications
- 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
- help.pl -- Text based manual
- tty.pl -- Terminal operations
- backcomp.pl -- Backward compatibility
- date.pl -- Process dates and times
- listing.pl -- List programs and pretty print clauses
- prolog_profile.pl -- Execution profiler
- quintus.pl -- Quintus compatibility
- charsio.pl -- I/O on Lists of Character Codes
- prolog_autoload.pl -- Autoload all dependencies
- check.pl -- Consistency checking
- optparse.pl -- command line parsing
- base32.pl -- Base32 encoding and decoding
- codesio.pl -- I/O on Lists of Character Codes
- coinduction.pl -- Co-Logic Programming
- heaps.pl -- heaps/priority queues
- sort.pl
- statistics.pl -- Get information about resource usage
- terms.pl -- Term manipulation
- varnumbers.pl -- Utilities for numbered terms
- when.pl -- Conditional coroutining
- ansi_term.pl -- Print decorated text to ANSI consoles
- strings.pl -- String utilities
- explain.pl -- Describe Prolog Terms
- threadutil.pl -- Interactive thread utilities
- prolog_stack.pl -- Examine the Prolog stack
- edit.pl -- Editor interface
- make.pl -- Reload modified source files
- prolog_codewalk.pl -- Prolog code walker
- prolog_metainference.pl -- Infer meta-predicate properties
- wfs.pl -- Well Founded Semantics interface
- prolog_config.pl -- Provide configuration information
- zip.pl -- Access resource ZIP archives
- oset.pl -- Ordered set manipulation
- tables.pl -- XSB interface to tables
- prolog_trace.pl -- Print access to predicates
- portray_text.pl -- Portray text
- shell.pl -- Elementary shell commands
- hashtable.pl -- Hash tables
- prolog_wrap.pl -- Wrapping predicates
- win_menu.pl -- Console window menu
- system.pl -- System utilities
- prolog_debug.pl -- User level debugging tools
- prolog_coverage.pl -- Coverage analysis tool
- files.pl
- rwlocks.pl -- Read/write locks
- macros.pl -- Macro expansion
- intercept.pl -- Intercept and signal interface
- prolog_versions.pl -- Demand specific (Prolog) versions
- writef.pl -- Old-style formatted write
- fastrw.pl -- Fast reading and writing of terms
- prolog_jiti.pl -- Just In Time Indexing (JITI) utilities
- qsave.pl -- Save current program as a state or executable
- increval.pl -- Incremental dynamic predicate modification
- streams.pl -- Manage Prolog streams
- prolog_history.pl -- Per-directory persistent commandline history
- library
- with_output_to(?Output, :Goal, +Options) is det
- Run Goal and once/1 while capturing all output to all streams
(
current_output
,user_output
anduser_error
) in the string Output. Options processed:- capture(ListOfStreams)
- List of streams to capture. Default is
[]
, causing the predicate to call with_output_to/2. The only admissible list elements are the alias names for the Prolog standard streams. Ascurrent_output
is always captured, the only two values areuser_output
anduser_error
- color(Boolean)
- When
true
, pretend the output is a terminal, causing messages to use ANSI term escape sequences for color.
For example, the following captures an error message. Note that we must catch and print the message inside Goal. If we do not do so the exception of Goal is simply propagated into the environment without binding Output.
?- with_output_to(string(Out), catch(A is log(-1), E, print_message(error, E)), [capture([user_error]), color(true)]). Out = "\u001B[1;31mERROR: is/2: Arithmetic: \c evaluation error: `undefined'\n\u001B[0m", E = error(evaluation_error(undefined), context(system:(is)/2, _)).