nimforum mirror - Output of xmltree's $() method is peculiar (yet correct)

AxBen (orginal) [2016-08-16T17:04:55+02:00] view original

When using Nim's xmltree module for the first time, I encountered the following peculiarities:

xmltree's $() method [line numbers refer to the resulting XML document]

replaces e.g. "/" in attributes [lines 1, 7, ...] (not necessary; happily passes the check at https://validator.w3.org/; usually only ', ", &, <, and > should be replaced)

reorders a tag's attributes [lines 5, ...] (nasty when comparing input and output)

joins (at times) structured/indented lines [lines 4, 20, ...] (cmp. above)

not always/inconsistently indents contained tags [lines 4, 20, ...] (cmp. above)

Also, it has not way to

set an indentation value (e.g. two or three spaces)

set an indentation mode (e.g. join or split contained tags)

It would be nice to be able to influence $()'s behavior and have a more "beautified" rsp. consistent output (especially given the fact, that this module is a part of the standard library).

Sample prog

import xmlparser, xmltree

var
   outFile: File
   errors:  seq[string] = @[]
   
   xml = loadXml("blocklist.xml", errors)

if open(outFile, "xmltest.xml", fmWrite):
   outFile.write($xml)
   outFile.close()

Sample input file (extracts from Mozilla's blocklist.xml):

<?xml version="1.0"?>

<blocklist xmlns="http://www.mozilla.org/2006/addons-blocklist" lastupdate="1469801851000">
   <emItems>
      <emItem  blockID="i45" id="{22119944-ED35-4ab1-910B-E619EA06A115}">
      <versionRange  minVersion="0.1" maxVersion="7.6.1">
      <targetApplication  id="{ec8030f7-c20a-464f-9b0e-13a3a9e97384}">
      <versionRange  minVersion="8.0a1" maxVersion="*" />
      </targetApplication>
      </versionRange>
      <prefs></prefs>
      </emItem>
      
      <emItem  blockID="i506" id="/^ext@bettersurfplus/">
      <versionRange  minVersion="0" maxVersion="*" severity="3"></versionRange>
      <prefs></prefs>
      </emItem>
      
      <emItem  blockID="i1119" id="/^([email protected]|[email protected]|[email protected]|[email protected])$/">
      <versionRange  minVersion="0" maxVersion="*" severity="3"></versionRange>
      <prefs></prefs>
      </emItem>
   </emItems>
   
   <pluginItems>
      <pluginItem  blockID="p26">
      <match name="name" exp="^Yahoo Application State Plugin$" /><match name="description" exp="^Yahoo Application State Plugin$" /><match name="filename" exp="npYState.dll" /><versionRange >
      <targetApplication  id="{ec8030f7-c20a-464f-9b0e-13a3a9e97384}">
      <versionRange  minVersion="3.0a1" maxVersion="3.*" />
      </targetApplication>
      </versionRange>
      </pluginItem>
   </pluginItems>
   
   <gfxItems>
      <gfxBlacklistEntry  blockID="g35"><os>WINNT 6.1</os><vendor>0x10de</vendor><devices>
      <device>0x0a6c</device>
      </devices>
      <feature>DIRECT2D</feature><featureStatus>BLOCKED_DRIVER_VERSION</featureStatus><driverVersion>8.17.12.5896</driverVersion><driverVersionComparator>LESS_THAN_OR_EQUAL</driverVersionComparator></gfxBlacklistEntry>
      
      <gfxBlacklistEntry  blockID="g1072"><os>All</os><vendor>0x8086</vendor><devices>
      <device>0x2a42</device>
      <device>0x2e22</device>
      <device>0x2e12</device>
      <device>0x2e32</device>
      <device>0x0046</device>
      </devices>
      <featureStatus>BLOCKED_DRIVER_VERSION</featureStatus><driverVersion>8.15.10.1892</driverVersion><driverVersionComparator>EQUAL</driverVersionComparator></gfxBlacklistEntry>
   </gfxItems>
   
   <certItems>
   <certItem issuerName="MIGQMQswCQYDVQQGEwJHQjEbMBkGA1UECBMSR3JlYXRlciBNYW5jaGVzdGVyMRAwDgYDVQQHEwdTYWxmb3JkMRowGAYDVQQKExFDT01PRE8gQ0EgTGltaXRlZDE2MDQGA1UEAxMtQ09NT0RPIFJTQSBEb21haW4gVmFsaWRhdGlvbiBTZWN1cmUgU2VydmVyIENB">
   <serialNumber>D9UltDPl4XVfSSqQOvdiwQ==</serialNumber>
   </certItem>
   </certItems>
</blocklist>

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