<stránka
	xmlns="https://trac.frantovo.cz/xml-web-generator/wiki/xmlns/strana"
	xmlns:m="https://trac.frantovo.cz/xml-web-generator/wiki/xmlns/makro">
	
	<nadpis>Release v0.10</nadpis>
	<perex>third public release of Relational pipes</perex>
	<m:release>v0.10</m:release>

	<text xmlns="http://www.w3.org/1999/xhtml">
		<p>
			We are pleased to introduce you the new version of <m:name/>.
			This release brings Guile support and some minor changes:
		</p>
		
		<ul>
			<li>
				<strong>Guile transformations</strong>:
				the new tool <code>relpipe-tr-guile</code> integrates GNU Guile
				and allows writing filters (WHERE-like conditions) and transformations (SELECT-like projections)
				in the Scheme language.
				Filter could look like e.g. <code>--where '(or (= $size 666) (= $size 1984) )'</code>.
				See the <m:a href="examples">examples</m:a> page for details.
			</li>
		
			<li>
				<strong>ODS output</strong>:
				Integer attributes are now generated with proper data type,
				so e.g. in LibreOffice they are recognized as numbers instead of strings.
			</li>
			
			<li>
				<strong>CSV output</strong>:
				Now generates CRLF line-ends (as defined in RFC 4180).
			</li>
		
			<li>
				<strong>Filesystem input</strong>:
				Now allows custom relation names (option: <code>--relation</code>).
				And default xattr namespace is now <code>user</code> so the attribute names do not have to be prefixed with <code>user.</code>.
			</li>
		</ul>
		<!--
		<p>
			See the <m:a href="examples">examples</m:a> page for details.
		</p>
		-->
		
		<h3>Data types</h3>
		<ul>
			<li m:since="v0.8">boolean</li>
			<li m:since="v0.8">variable unsigned integer (prototype)</li>
			<li m:since="v0.8">string in UTF-8</li>
		</ul>
		<h3>Inputs</h3>
		<ul>
			<li m:since="v0.9">XML</li>
			<li m:since="v0.9">CSV</li>
			<li m:since="v0.9">file system</li>
			<li m:since="v0.8">CLI</li>
			<li m:since="v0.8">fstab</li>
		</ul>
		<h3>Transformations</h3>
		<ul>
			<li m:since="v0.10">guile: filtering and transformations defined in the Scheme language using GNU Guile</li>
			<li m:since="v0.8">grep: regular expression filter, removes unwanted records from the relation</li>
			<li m:since="v0.8">cut: regular expression attribute cutter (removes or duplicates attributes and can also DROP whole relation)</li>
			<li m:since="v0.8">sed: regular expression replacer</li>
			<li m:since="v0.8">validator: just a pass-through filter that crashes on invalid data</li>
			<li m:since="v0.8">python: highly experimental</li>
		</ul>
		<h3>Outputs</h3>
		<ul>
			<li m:since="v0.9">CSV</li>
			<li m:since="v0.8">tabular</li>
			<li m:since="v0.8">XML</li>
			<li m:since="v0.8">nullbyte</li>
			<li m:since="v0.8">GUI in Qt</li>
			<li m:since="v0.8">ODS (LibreOffice)</li>
		</ul>
		
		<p>
			Instalation was tested on Debian GNU/Linux 9.6.
			The process should be similar on other distributions.
		</p>
		
		<m:pre src="examples/release-v0.10.sh" jazyk="bash" odkaz="ano"/>
		
		<p>
			<m:name/> are modular thus you can download and install only parts you need (the libraries are needed always).
			Tools <code>out-gui.qt</code> and <code>tr-python</code> require additional libraries and are not built by default.
		</p>
		
		<p>
			The module <code>relpipe-in-filesystem</code> uses C++ filesystem API which is supported since GCC 8.
			This module can be compiled and seems usable even with GCC 6, but requires some patching (switch to the experimental API):
		</p>
		
		<m:pre jazyk="bash"><![CDATA[sed 's@#include <filesystem>@#include <experimental/filesystem>@g' -i "$RELPIPE_SRC"/relpipe-in-filesystem.cpp/src/FileAttributeFinder.h "$RELPIPE_SRC"/relpipe-in-filesystem.cpp/src/XattrAttributeFinder.h "$RELPIPE_SRC"/relpipe-in-filesystem.cpp/src/FilesystemCommand.h "$RELPIPE_SRC"/relpipe-in-filesystem.cpp/src/AttributeFinder.h
sed 's@std::filesystem@std::experimental::filesystem@g' -i "$RELPIPE_SRC"/relpipe-in-filesystem.cpp/src/FileAttributeFinder.h "$RELPIPE_SRC"/relpipe-in-filesystem.cpp/src/XattrAttributeFinder.h "$RELPIPE_SRC"/relpipe-in-filesystem.cpp/src/FilesystemCommand.h "$RELPIPE_SRC"/relpipe-in-filesystem.cpp/src/AttributeFinder.h
sed 's/.*PROPERTY CXX_STANDARD.*/#\0/g' -i "$RELPIPE_SRC"/relpipe-in-filesystem.cpp/src/CMakeLists.txt]]></m:pre>

		<p>
			The module <code>relpipe-tr-guile</code> uses GNU Guile 2.2 but can also work with 2.0.
			In such case, it requires this patch:
		</p>
		
		<m:pre jazyk="bash"><![CDATA[sed 's/guile-2\.2/guile-2.0/g' -i "$RELPIPE_SRC"/relpipe-tr-guile.cpp/src/CMakeLists.txt]]></m:pre>

	</text>

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