1yaml(n) YAML processing yaml(n)
2______________________________________________________________________________
6
8 yaml - YAML Format Encoder/Decoder
9
11 package require Tcl 8.4
12 package require yaml ?0.4.1?
14 ::yaml::yaml2dict ?options? txt
16 ::yaml::yaml2huddle ?options? txt
18 ::yaml::setOption ?options?
20 ::yaml::dict2yaml dict ?indent? ?wordwrap?
22 ::yaml::list2yaml list ?indent? ?wordwrap?
24 ::yaml::huddle2yaml huddle ?indent? ?wordwrap?
26______________________________________________________________________________
28
30 The yaml package provides a simple Tcl-only library for parsing the
31 YAML http://www.yaml.org/ data exchange format as specified in
32 http://www.yaml.org/spec/1.1/.
33 The yaml package returns data as a Tcl dict. Either the dict package
35 or Tcl 8.5 is required for use.
36
38 ::yaml::yaml2dict ?options? txt
39 ::yaml::yaml2huddle ?options? txt
41 Parse yaml formatted text txt into a Tcl dict/huddle and return
42 the value.
43 -file txt is a filename of YAML-stream.
45 -stream
47 txt is just a YAML-stream.
48 -types list
50 The list is a type list for the yaml-scalar types.(e.g.
51 !!str !!timestamp !!integer !!true ...)
52 -types {timestamp integer null true false}
54 In this case, if a string matched "timestamp", converted
56 to the TCL internal timestamp.(e.g.
57 "2001-12-15T02:59:43.1Z" => 1008385183)
58 -m:true param
60 The param is two elements of list for the value of true,
61 and considered strings.
62 -m:true {1 {true on + yes y}}
64 In this case, the string "yes" found in YAML Stream, au‐
66 tomatically converted 1.
67 -m:false param
69 The param is two elements of list for the value of false,
70 and considered strings.
71 -m:false {0 {false off - no n}}
73 -m:null param
75 The param is two elements of list for the value of null,
76 and considered strings.
77 -m:null {"" {null nil "" ~}}
79 -validate
81 Experiment,old: Output stream contains YAML's-tag, each
82 node.
83 % puts [::yaml::load -validate {[aaa, bbb]}]
85 =>
86 !!seq {{!!str aaa} {!!str bbb}}
87 ::yaml::setOption ?options?
90 Change implicit options for the library. Now, the params are
91 the same as ::yaml::yaml2dict. Arguments of::yaml::yaml2dict is
92 more priority than this setting.
93 ::yaml::dict2yaml dict ?indent? ?wordwrap?
95 ::yaml::list2yaml list ?indent? ?wordwrap?
97 ::yaml::huddle2yaml huddle ?indent? ?wordwrap?
99 Convert a dict/list/huddle object into YAML stream.
100 indent spaces indent of each block node. currently default is
102 2.
103 wordwrap
105 word wrap for YAML stream. currently default is 40.
106
108 An example of a yaml stream converted to Tcl. A yaml stream is re‐
109 turned as a single item with multiple elements.
110 {
112 --- !<tag:clarkevans.com,2002:invoice>
113 invoice: 34843
114 date : 2001-01-23
115 bill-to: &id001
116 given : Chris
117 family : Dumars
118 address:
119 lines: |
120 458 Walkman Dr.
121 Suite #292
122 city : Royal Oak
123 state : MI
124 postal : 48046
125 ship-to: *id001
126 product:
127 - sku : BL394D
128 quantity : 4
129 description : Basketball
130 price : 450.00
131 - sku : BL4438H
132 quantity : 1
133 description : Super Hoop
134 price : 2392.00
135 tax : 251.42
136 total: 4443.52
137 comments:
138 Late afternoon is best.
139 Backup contact is Nancy
140 Billsmer @ 338-4338.
141 }
142 =>
143 invoice 34843 date 2001-01-23 bill-to {given Chris family Dumars address {lines {458 Walkman Dr.
144 Suite #292
145 } city {Royal Oak} state MI postal 48046}} ship-to {given Chris family Dumars address {lines {458 Walkman Dr.
146 Suite #292
147 } 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.}
148 An example of a yaml object converted to Tcl. A yaml object is re‐
150 turned as a multi-element list (a dict).
151 {
153 ---
154 - [name , hr, avg ]
155 - [Mark McGwire, 65, 0.278]
156 - [Sammy Sosa , 63, 0.288]
157 -
158 Mark McGwire: {hr: 65, avg: 0.278}
159 Sammy Sosa: { hr: 63, avg: 0.288}
160 }
161 =>
162 {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}}
163
166 tag parser not implemented. currentry, tags are merely ignored.
167 Only Anchor => Aliases ordering. back alias-referring is not supported.
169 Too many braces, or too few braces.
171 Not enough character set of line feeds. Please use only "\n" as line
173 breaks.
174
176 This document, and the package it describes, will undoubtedly contain
177 bugs and other problems. Please report such in the category yaml of
178 the Tcllib Trackers [http://core.tcl.tk/tcllib/reportlist]. Please
179 also report any ideas for enhancements you may have for either package
180 and/or documentation.
181 When proposing code changes, please provide unified diffs, i.e the out‐
183 put of diff -u.
184 Note further that attachments are strongly preferred over inlined
186 patches. Attachments can be made by going to the Edit form of the
187 ticket immediately after its creation, and then using the left-most
188 button in the secondary navigation bar.
189
191 base64, huddle, json
192
194 data exchange, huddle, parsing, text processing, yaml
195
197 Copyright (c) 2008 KATO Kanryu <kanryu6@users.sourceforge.net>
198tcllib 0.4.1 yaml(n)