Difference between revisions of "ZIP Module"

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Line 73: Line 73:
 
|-
 
|-
 
| '''Examples'''
 
| '''Examples'''
|If the ZIP archive {{Code|archive.zip}} is empty, {{Code|zip:entries('archive.zip')}} returns:<br/><pre class="brush:xml"><zip:file xmlns:zip="http://expath.org/ns/zip" href="archive.zip"/></pre>
+
|If the ZIP archive {{Code|archive.zip}} is empty, {{Code|zip:entries('archive.zip')}} returns:
 +
<syntaxhighlight lang="xml">
 +
<zip:file xmlns:zip="http://expath.org/ns/zip" href="archive.zip"/>
 +
</syntaxhighlight>
 
|}
 
|}
  
Line 90: Line 93:
 
| '''Examples'''
 
| '''Examples'''
 
|The following function creates a file {{Code|archive.zip}} with the file {{Code|file.txt}} inside:
 
|The following function creates a file {{Code|archive.zip}} with the file {{Code|file.txt}} inside:
<pre class="brush:xquery">
+
<syntaxhighlight lang="xquery">
 
zip:zip-file(
 
zip:zip-file(
 
   <file xmlns="http://expath.org/ns/zip" href="archive.zip">
 
   <file xmlns="http://expath.org/ns/zip" href="archive.zip">
 
     <entry src="file.txt"/>
 
     <entry src="file.txt"/>
 
   </file>)
 
   </file>)
</pre>
+
</syntaxhighlight>
 
The following function creates a file {{Code|archive.zip}}. It contains one file {{Code|readme}} with the content "{{Code|thanks}}":
 
The following function creates a file {{Code|archive.zip}}. It contains one file {{Code|readme}} with the content "{{Code|thanks}}":
<pre class="brush:xquery">
+
<syntaxhighlight lang="xquery">
 
zip:zip-file(
 
zip:zip-file(
 
   <file xmlns="http://expath.org/ns/zip" href="archive.zip">
 
   <file xmlns="http://expath.org/ns/zip" href="archive.zip">
 
     <entry name="readme">thanks</entry>
 
     <entry name="readme">thanks</entry>
 
   </file>)
 
   </file>)
</pre>
+
</syntaxhighlight>
 
|}
 
|}
  
Line 119: Line 122:
 
| '''Examples'''
 
| '''Examples'''
 
|The following function creates a copy {{Code|new.zip}} of the existing {{Code|archive.zip}} file:
 
|The following function creates a copy {{Code|new.zip}} of the existing {{Code|archive.zip}} file:
<pre class="brush:xquery">
+
<syntaxhighlight lang="xquery">
 
zip:update-entries(zip:entries('archive.zip'), 'new.zip')
 
zip:update-entries(zip:entries('archive.zip'), 'new.zip')
</pre>
+
</syntaxhighlight>
 
The following function deletes all PNG files from {{Code|archive.zip}}:
 
The following function deletes all PNG files from {{Code|archive.zip}}:
<pre class="brush:xquery">
+
<syntaxhighlight lang="xquery">
 
declare namespace zip = "http://expath.org/ns/zip";
 
declare namespace zip = "http://expath.org/ns/zip";
 
copy $doc := zip:entries('archive.zip')
 
copy $doc := zip:entries('archive.zip')
 
modify delete node $doc//zip:entry[ends-with(lower-case(@name), '.png')]
 
modify delete node $doc//zip:entry[ends-with(lower-case(@name), '.png')]
 
return zip:update-entries($doc, 'archive.zip')
 
return zip:update-entries($doc, 'archive.zip')
</pre>
+
</syntaxhighlight>
 
|}
 
|}
  

Latest revision as of 14:16, 27 February 2020

This XQuery Module contains functions to handle ZIP archives. The contents of ZIP files can be extracted and listed, and new archives can be created. The module is based on the EXPath ZIP Module. Please note that the ZIP module is not being actively maintained but is still distributed for compatibility with older applications. We recommend you use the Archive Module wherever possible.

Conventions[edit]

All functions in this module are assigned to the http://expath.org/ns/zip namespace, which is statically bound to the zip prefix.
All errors are assigned to the http://expath.org/ns/error namespace, which is statically bound to the experr prefix.

Functions[edit]

zip:binary-entry[edit]

Signatures zip:binary-entry($uri as xs:string, $path as xs:string) as xs:base64Binary
Summary Extracts the binary file at $path within the ZIP file located at $uri and returns it as an xs:base64Binary item.
Errors ZIP0001: the specified path does not exist.
ZIP0003: the operation fails for some other reason.

zip:text-entry[edit]

Signatures zip:text-entry($uri as xs:string, $path as xs:string) as xs:string
zip:text-entry($uri as xs:string, $path as xs:string, $encoding as xs:string) as xs:string
Summary Extracts the text file at $path within the ZIP file located at $uri and returns it as an xs:string item.
An optional encoding can be specified via $encoding.
Errors ZIP0001: the specified path does not exist.
ZIP0003: the operation fails for some other reason.

zip:xml-entry[edit]

Signatures zip:xml-entry($uri as xs:string, $path as xs:string) as document-node()
Summary Extracts the XML file at $path within the ZIP file located at $uri and returns it as a document node.
Errors ZIP0001: the specified path does not exist.
ZIP0003: the operation fails for some other reason.

zip:html-entry[edit]

Signatures zip:html-entry($uri as xs:string, $path as xs:string) as document-node()
Summary Extracts the HTML file at $path within the ZIP file located at $uri and returns it as a document node. The file is converted to XML first if Tagsoup is found in the classpath.
Errors ZIP0001: the specified path does not exist.
ZIP0003: the operation fails for some other reason.

zip:entries[edit]

Signatures zip:entries($uri as xs:string) as element(zip:file)
Summary Generates an ZIP XML Representation of the hierarchical structure of the ZIP file located at $uri and returns it as an element node. The file contents are not returned by this function.
Errors ZIP0001: the specified path does not exist.
ZIP0003: the operation fails for some other reason.
Examples If the ZIP archive archive.zip is empty, zip:entries('archive.zip') returns:
<zip:file xmlns:zip="http://expath.org/ns/zip" href="archive.zip"/>

zip:zip-file[edit]

Signatures zip:zip-file($zip as element(zip:file)) as empty-sequence()
Summary Creates a new ZIP archive with the characteristics described by $zip, the ZIP XML Representation.
Errors ZIP0001: an addressed file does not exist.
ZIP0002: entries in the ZIP archive description are unknown, missing, or invalid.
ZIP0003: the operation fails for some other reason.
Examples The following function creates a file archive.zip with the file file.txt inside:
zip:zip-file(
  <file xmlns="http://expath.org/ns/zip" href="archive.zip">
    <entry src="file.txt"/>
  </file>)

The following function creates a file archive.zip. It contains one file readme with the content "thanks":

zip:zip-file(
  <file xmlns="http://expath.org/ns/zip" href="archive.zip">
    <entry name="readme">thanks</entry>
  </file>)

zip:update-entries[edit]

Signatures zip:update-entries($zip as element(zip:file), $output as xs:string) as empty-sequence()
Summary Updates an existing ZIP archive or creates a modifed copy, based on the characteristics described by $zip, the ZIP XML Representation. The $output argument is the URI where the modified ZIP file is copied to.
Errors ZIP0001: an addressed file does not exist.
ZIP0002: entries in the ZIP archive description are unknown, missing, or invalid.
ZIP0003: the operation fails for some other reason.
Examples The following function creates a copy new.zip of the existing archive.zip file:
zip:update-entries(zip:entries('archive.zip'), 'new.zip')

The following function deletes all PNG files from archive.zip:

declare namespace zip = "http://expath.org/ns/zip";
copy $doc := zip:entries('archive.zip')
modify delete node $doc//zip:entry[ends-with(lower-case(@name), '.png')]
return zip:update-entries($doc, 'archive.zip')

Errors[edit]

Code Description
ZIP0001 A specified path does not exist.
ZIP0002 Entries in the ZIP archive description are unknown, missing, or invalid.
ZIP0003 An operation fails for some other reason.