yaml(n) 							  YAML processing							   yaml(n)

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NAME

       yaml - YAML Format Encoder/Decoder

SYNOPSIS

       package require Tcl  8.4

       package require yaml  ?0.3.3?

       ::yaml::yaml2dict ?options? txt

       ::yaml::yaml2huddle ?options? txt

       ::yaml::setOption ?options?

       ::yaml::dict2yaml dict ?indent? ?wordwrap?

       ::yaml::list2yaml list ?indent? ?wordwrap?

       ::yaml::huddle2yaml huddle ?indent? ?wordwrap?

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DESCRIPTION

       The  yaml  package  provides  a	simple	Tcl-only  library  for	parsing the YAML http://www.yaml.org/ data exchange format as specified in
       http://www.yaml.org/spec/1.1/.

       The yaml package returns data as a Tcl dict.  Either the dict package or Tcl 8.5 is required for use.

COMMANDS

       ::yaml::yaml2dict ?options? txt

       ::yaml::yaml2huddle ?options? txt
	      Parse yaml formatted text txt into a Tcl dict/huddle and return the value.

	      -file  txt is a filename of YAML-stream.

	      -stream
		     txt is just a YAML-stream.

	      -types list
		     The list is a type list for the yaml-scalar types.(e.g. !!str !!timestamp !!integer !!true ...)
		      -types {timestamp integer null true false}
		     In this case, if a string matched "timestamp", converted to the  TCL  internal  timestamp.(e.g.  "2001-12-15T02:59:43.1Z"	=>
		     1008385183)

	      -m:true param
		     The param is two elements of list for the value of true, and considered strings.
		      -m:true {1 {true on + yes y}}
		     In this case, the string "yes" found in YAML Stream, automatically converted 1.

	      -m:false param
		     The param is two elements of list for the value of false, and considered strings.
		      -m:false {0 {false off - no n}}

	      -m:null param
		     The param is two elements of list for the value of null, and considered strings.
		      -m:null {"" {null nil "" ~}}

	      -validate
		     Experiment,old: Output stream contains YAML's-tag, each node.
		     % puts [::yaml::load -validate {[aaa, bbb]}]
		     =>
		     !!seq {{!!str aaa} {!!str bbb}}

       ::yaml::setOption ?options?
	      Change  implicit options for the library.  Now, the params are the same as ::yaml::yaml2dict.  Arguments of::yaml::yaml2dict is more
	      priority than this setting.

       ::yaml::dict2yaml dict ?indent? ?wordwrap?

       ::yaml::list2yaml list ?indent? ?wordwrap?

       ::yaml::huddle2yaml huddle ?indent? ?wordwrap?
	      Convert a dict/list/huddle object into YAML stream.

	      indent spaces indent of each block node.	currently default is 2.

	      wordwrap
		     word wrap for YAML stream.  currently default is 40.

EXAMPLES

       An example of a yaml stream converted to Tcl.  A yaml stream is returned as a single item with multiple elements.

       {
       --- !<tag:clarkevans.com,2002:invoice>
       invoice: 34843
       date   : 2001-01-23
       bill-to: &id001
	   given  : Chris
	   family : Dumars
	   address:
	       lines: |
		   458 Walkman Dr.
		   Suite #292
	       city    : Royal Oak
	       state   : MI
	       postal  : 48046
       ship-to: *id001
       product:
	   - sku	 : BL394D
	     quantity	 : 4
	     description : Basketball
	     price	 : 450.00
	   - sku	 : BL4438H
	     quantity	 : 1
	     description : Super Hoop
	     price	 : 2392.00
       tax  : 251.42
       total: 4443.52
       comments:
	   Late afternoon is best.
	   Backup contact is Nancy
	   Billsmer @ 338-4338.
       }
       =>
       invoice 34843 date 2001-01-23 bill-to {given Chris family Dumars address {lines {458 Walkman Dr.
       Suite #292
       } city {Royal Oak} state MI postal 48046}} ship-to {given Chris family Dumars address {lines {458 Walkman Dr.
       Suite #292
       } city {Royal Oak} state MI postal 48046}} product {{sku BL394D quantity 4 description Basketball price 450.00} {sku BL4438H quantity 1 description {Super Hoop} price 2392.00}} tax 251.42 total 4443.52 comments {Late afternoon is best. Backup contact is Nancy Billsmer @ 338-4338.}

       An example of a yaml object converted to Tcl.  A yaml object is returned as a multi-element list (a dict).

       {
       ---
       - [name	      , hr, avg  ]
       - [Mark McGwire, 65, 0.278]
       - [Sammy Sosa  , 63, 0.288]
       -
	 Mark McGwire: {hr: 65, avg: 0.278}
	 Sammy Sosa: { hr: 63, avg: 0.288}
       }
       =>
       {name hr avg} {{Mark McGwire} 65 0.278} {{Sammy Sosa} 63 0.288} {{Mark McGwire} {hr 65 avg 0.278} {Sammy Sosa} {hr 63 avg 0.288}}

LIMITATIONS

       tag parser not implemented. currentry, tags are merely ignored.

       Only Anchor => Aliases ordering. back alias-referring is not supported.

       Too many braces, or too few braces.

       Not enough character set of line feeds. Please use only "
" as line breaks.

BUGS, IDEAS, FEEDBACK
       This document, and the package it describes, will undoubtedly contain bugs and other problems.  Please report such in the category yaml	of
       the  Tcllib  SF	Trackers [http://sourceforge.net/tracker/?group_id=12883].  Please also report any ideas for enhancements you may have for
       either package and/or documentation.

SEE ALSO

       base64, huddle, json

KEYWORDS

       data exchange, huddle, parsing, text processing, yaml

COPYRIGHT

       Copyright (c) 2008 KATO Kanryu <kanryu6@users.sourceforge.net>

yaml								       0.3.3								   yaml(n)