Edit File: YAML::Syck.3pm
.\" Automatically generated by Pod::Man 2.22 (Pod::Simple 3.13) .\" .\" Standard preamble: .\" ======================================================================== .de Sp \" Vertical space (when we can't use .PP) .if t .sp .5v .if n .sp .. .de Vb \" Begin verbatim text .ft CW .nf .ne \\$1 .. .de Ve \" End verbatim text .ft R .fi .. .\" Set up some character translations and predefined strings. \*(-- will .\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left .\" double quote, and \*(R" will give a right double quote. \*(C+ will .\" give a nicer C++. Capital omega is used to do unbreakable dashes and .\" therefore won't be available. \*(C` and \*(C' expand to `' in nroff, .\" nothing in troff, for use with C<>. .tr \(*W- .ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p' .ie n \{\ . ds -- \(*W- . ds PI pi . if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch . if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch . ds L" "" . ds R" "" . ds C` "" . ds C' "" 'br\} .el\{\ . ds -- \|\(em\| . ds PI \(*p . ds L" `` . ds R" '' 'br\} .\" .\" Escape single quotes in literal strings from groff's Unicode transform. .ie \n(.g .ds Aq \(aq .el .ds Aq ' .\" .\" If the F register is turned on, we'll generate index entries on stderr for .\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index .\" entries marked with X<> in POD. Of course, you'll have to process the .\" output yourself in some meaningful fashion. .ie \nF \{\ . de IX . tm Index:\\$1\t\\n%\t"\\$2" .. . nr % 0 . rr F .\} .el \{\ . de IX .. .\} .\" ======================================================================== .\" .IX Title "YAML::Syck 3" .TH YAML::Syck 3 "2017-04-19" "perl v5.10.1" "User Contributed Perl Documentation" .\" For nroff, turn off justification. Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" YAML::Syck \- Fast, lightweight YAML loader and dumper .SH "SYNOPSIS" .IX Header "SYNOPSIS" .Vb 1 \& use YAML::Syck; \& \& # Set this for interoperability with other YAML/Syck bindings: \& # e.g. Load(\*(AqYes\*(Aq) becomes 1 and Load(\*(AqNo\*(Aq) becomes \*(Aq\*(Aq. \& $YAML::Syck::ImplicitTyping = 1; \& \& $data = Load($yaml); \& $yaml = Dump($data); \& \& # $file can be an IO object, or a filename \& $data = LoadFile($file); \& DumpFile($file, $data); \& \& # A string with multiple YAML streams in it \& $yaml = Dump(@data); \& @data = Load($yaml); \& \& # Dumping into a pre\-existing output buffer \& my $yaml; \& DumpInto(\e$yaml, @data); .Ve .SH "DESCRIPTION" .IX Header "DESCRIPTION" This module provides a Perl interface to the \fBlibsyck\fR data serialization library. It exports the \f(CW\*(C`Dump\*(C'\fR and \f(CW\*(C`Load\*(C'\fR functions for converting Perl data structures to \s-1YAML\s0 strings, and the other way around. .PP \&\fB\s-1NOTE\s0\fR: If you are working with other language's YAML/Syck bindings (such as Ruby), please set \f(CW$YAML::Syck::ImplicitTyping\fR to \f(CW1\fR before calling the \f(CW\*(C`Load\*(C'\fR/\f(CW\*(C`Dump\*(C'\fR functions. The default setting is for preserving backward-compatibility with \f(CW\*(C`YAML.pm\*(C'\fR. .SH "Differences Between YAML::Syck and YAML" .IX Header "Differences Between YAML::Syck and YAML" .SS "Error handling" .IX Subsection "Error handling" Some calls are designed to die rather than returning \s-1YAML\s0. You should wrap your calls in eval to assure you do not get unexpected results. .SH "FLAGS" .IX Header "FLAGS" .ie n .SS "$YAML::Syck::Headless" .el .SS "\f(CW$YAML::Syck::Headless\fP" .IX Subsection "$YAML::Syck::Headless" Defaults to false. Setting this to a true value will make \f(CW\*(C`Dump\*(C'\fR omit the leading \f(CW\*(C`\-\-\-\en\*(C'\fR marker. .ie n .SS "$YAML::Syck::SortKeys" .el .SS "\f(CW$YAML::Syck::SortKeys\fP" .IX Subsection "$YAML::Syck::SortKeys" Defaults to false. Setting this to a true value will make \f(CW\*(C`Dump\*(C'\fR sort hash keys. .ie n .SS "$YAML::Syck::SingleQuote" .el .SS "\f(CW$YAML::Syck::SingleQuote\fP" .IX Subsection "$YAML::Syck::SingleQuote" Defaults to false. Setting this to a true value will make \f(CW\*(C`Dump\*(C'\fR always emit single quotes instead of bare strings. .ie n .SS "$YAML::Syck::ImplicitTyping" .el .SS "\f(CW$YAML::Syck::ImplicitTyping\fP" .IX Subsection "$YAML::Syck::ImplicitTyping" Defaults to false. Setting this to a true value will make \f(CW\*(C`Load\*(C'\fR recognize various implicit types in \s-1YAML\s0, such as unquoted \f(CW\*(C`true\*(C'\fR, \f(CW\*(C`false\*(C'\fR, as well as integers and floating-point numbers. Otherwise, only \f(CW\*(C`~\*(C'\fR is recognized to be \f(CW\*(C`undef\*(C'\fR. .ie n .SS "$YAML::Syck::ImplicitUnicode" .el .SS "\f(CW$YAML::Syck::ImplicitUnicode\fP" .IX Subsection "$YAML::Syck::ImplicitUnicode" Defaults to false. For Perl 5.8.0 or later, setting this to a true value will make \f(CW\*(C`Load\*(C'\fR set Unicode flag on for every string that contains valid \s-1UTF8\s0 sequences, and make \f(CW\*(C`Dump\*(C'\fR return a unicode string. .PP Regardless of this flag, Unicode strings are dumped verbatim without escaping; byte strings with high-bit set will be dumped with backslash escaping. .PP However, because \s-1YAML\s0 does not distinguish between these two kinds of strings, so this flag will affect loading of both variants of strings. .PP If you want to use LoadFile or DumpFile with unicode, you are required to open your own file in order to assure it's \s-1UTF8\s0 encoded: .PP .Vb 2 \& open(my $fh, ">:encoding(UTF\-8)", "out.yml"); \& DumpFile($fh, $hashref); .Ve .ie n .SS "$YAML::Syck::ImplicitBinary" .el .SS "\f(CW$YAML::Syck::ImplicitBinary\fP" .IX Subsection "$YAML::Syck::ImplicitBinary" Defaults to false. For Perl 5.8.0 or later, setting this to a true value will make \f(CW\*(C`Dump\*(C'\fR generate Base64\-encoded \f(CW\*(C`!!binary\*(C'\fR data for all non-Unicode scalars containing high-bit bytes. .ie n .SS "$YAML::Syck::UseCode / $YAML::Syck::LoadCode / $YAML::Syck::DumpCode" .el .SS "\f(CW$YAML::Syck::UseCode\fP / \f(CW$YAML::Syck::LoadCode\fP / \f(CW$YAML::Syck::DumpCode\fP" .IX Subsection "$YAML::Syck::UseCode / $YAML::Syck::LoadCode / $YAML::Syck::DumpCode" These flags control whether or not to try and eval/deparse perl source code; each of them defaults to false. .PP Setting \f(CW$YAML::Syck::UseCode\fR to a true value is equivalent to setting both \f(CW$YAML::Syck::LoadCode\fR and \f(CW$YAML::Syck::DumpCode\fR to true. .ie n .SS "$YAML::Syck::LoadBlessed" .el .SS "\f(CW$YAML::Syck::LoadBlessed\fP" .IX Subsection "$YAML::Syck::LoadBlessed" Defaults to true. Setting to false will block YAML::Syck from doing \s-1ANY\s0 blessing. This is an interface change since 1.21. The variable name was misleading, implying that no blessing would happen when in fact it did. .PP Prior to 1.22, setting this to a false value only prevented \f(CW\*(C`Load\*(C'\fR from blessing tag names that did not begin with \f(CW\*(C`!!perl\*(C'\fR or \f(CW\*(C`!perl\*(C'\fR;. .SH "BUGS" .IX Header "BUGS" Dumping Glob/IO values do not work yet. .PP Dumping of Tied variables is unsupported. .PP Dumping into tied (or other magic variables) with \f(CW\*(C`DumpInto\*(C'\fR might not work properly in all cases. .SH "CAVEATS" .IX Header "CAVEATS" This module implements the \s-1YAML\s0 1.0 spec. To deal with data in \s-1YAML\s0 1.1, please use the \f(CW\*(C`YAML::XS\*(C'\fR module instead. .PP The current implementation bundles libsyck source code; if your system has a site-wide shared libsyck, it will \fInot\fR be used. .PP Tag names such as \f(CW\*(C`!!perl/hash:Foo\*(C'\fR is blessed into the package \f(CW\*(C`Foo\*(C'\fR, but the \f(CW\*(C`!hs/foo\*(C'\fR and \f(CW\*(C`!!hs/Foo\*(C'\fR tags are blessed into \f(CW\*(C`hs::Foo\*(C'\fR. Note that this holds true even if the tag contains non-word characters; for example, \&\f(CW\*(C`!haskell.org/Foo\*(C'\fR is blessed into \f(CW\*(C`haskell.org::Foo\*(C'\fR. Please use Class::Rebless to cast it into other user-defined packages. You can also set the LoadBlessed flag false to disable all blessing. .PP This module has <a lot of known issues> and has only been semi-actively maintained since 2007. If you encounter an issue with it probably won't be fixed unless you <offer up a patch> in Git that's ready for release. .PP There are still good reasons to use this module, such as better interoperability with other syck wrappers (like Ruby's), or some edge case of \s-1YAML\s0's syntax that it handles better. It'll probably work perfectly for you, but if it doesn't you may want to look at \&\s-1YAML::XS\s0, or perhaps at looking another serialization format like \&\s-1JSON\s0. .SH "SEE ALSO" .IX Header "SEE ALSO" \&\s-1YAML\s0, JSON::Syck .PP <http://www.yaml.org/> .SH "AUTHORS" .IX Header "AUTHORS" Audrey Tang <cpan@audreyt.org> .SH "COPYRIGHT" .IX Header "COPYRIGHT" Copyright 2005\-2009 by Audrey Tang <cpan@audreyt.org>. .PP This software is released under the \s-1MIT\s0 license cited below. .PP The \fIlibsyck\fR code bundled with this library is released by \&\*(L"why the lucky stiff\*(R", under a BSD-style license. See the \fI\s-1COPYING\s0\fR file for details. .ie n .SS "The ""\s-1MIT\s0"" License" .el .SS "The ``\s-1MIT\s0'' License" .IX Subsection "The MIT License" Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the \*(L"Software\*(R"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: .PP The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. .PP \&\s-1THE\s0 \s-1SOFTWARE\s0 \s-1IS\s0 \s-1PROVIDED\s0 \*(L"\s-1AS\s0 \s-1IS\s0\*(R", \s-1WITHOUT\s0 \s-1WARRANTY\s0 \s-1OF\s0 \s-1ANY\s0 \s-1KIND\s0, \s-1EXPRESS\s0 \&\s-1OR\s0 \s-1IMPLIED\s0, \s-1INCLUDING\s0 \s-1BUT\s0 \s-1NOT\s0 \s-1LIMITED\s0 \s-1TO\s0 \s-1THE\s0 \s-1WARRANTIES\s0 \s-1OF\s0 \s-1MERCHANTABILITY\s0, \&\s-1FITNESS\s0 \s-1FOR\s0 A \s-1PARTICULAR\s0 \s-1PURPOSE\s0 \s-1AND\s0 \s-1NONINFRINGEMENT\s0. \s-1IN\s0 \s-1NO\s0 \s-1EVENT\s0 \s-1SHALL\s0 \&\s-1THE\s0 \s-1AUTHORS\s0 \s-1OR\s0 \s-1COPYRIGHT\s0 \s-1HOLDERS\s0 \s-1BE\s0 \s-1LIABLE\s0 \s-1FOR\s0 \s-1ANY\s0 \s-1CLAIM\s0, \s-1DAMAGES\s0 \s-1OR\s0 \s-1OTHER\s0 \&\s-1LIABILITY\s0, \s-1WHETHER\s0 \s-1IN\s0 \s-1AN\s0 \s-1ACTION\s0 \s-1OF\s0 \s-1CONTRACT\s0, \s-1TORT\s0 \s-1OR\s0 \s-1OTHERWISE\s0, \s-1ARISING\s0 \&\s-1FROM\s0, \s-1OUT\s0 \s-1OF\s0 \s-1OR\s0 \s-1IN\s0 \s-1CONNECTION\s0 \s-1WITH\s0 \s-1THE\s0 \s-1SOFTWARE\s0 \s-1OR\s0 \s-1THE\s0 \s-1USE\s0 \s-1OR\s0 \s-1OTHER\s0 \&\s-1DEALINGS\s0 \s-1IN\s0 \s-1THE\s0 \s-1SOFTWARE\s0.
Back to File Manager