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XML DOM processing for Golang, supports xpath query

License: Apache License 2.0

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dom golang xml xml-parser xpath

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go-xmldom's Issues

Update XML example please

go-xmldom is able to "Update XML using dom", so is it possible to locate an xml node via xapth then edit/modify the content/attributes?

If so, an working example would be appreciated. Thx.

Array access with negative index

In go-xmldom/node.go (master branch), function PrevSibling(), there's:

if i >= 0 {
  return n.Parent.Children[i-1]
}

The >= should probably be >.

I was parsing a XML file that contains CData sections and got empty strings. After a little digging I found the error. It seems that the underlying xml package produces multiple xml.CharData-Tokens for a node if it contains CData.
Replacing

go-xmldom/dom.go

Line 69 in e1029cd

e.Text = string(bytes.TrimSpace(token))

with

e.Text += string(bytes.TrimSpace(token))

fixes the error.

Additionally I wrote a test case for this issue.

func TestParseCData(t *testing.T) {
	doc, err := xmldom.ParseXML(`
	<r>
	<![CDATA[
		Hello World!
	]]>
	</r>
	`)
	if err != nil {
		t.Fail()
	}
	if doc.Root.Text != "Hello World!" {
		t.Errorf(`got "%s", expected "Hello World!"`, doc.Root.Text)
	}
}

(Node) RemoveChild(Node) has a typo in the append() parameter

For the code line:

n.Children = append(n.Children[:1], n.Children[i+1:]...)

the "1" in the first n.Children[] index should be "i"
like this

n.Children = append(n.Children[:i], n.Children[i+1:]...)

I played with it here to figure out why RemoveChild() wasn't working right for me:
https://play.golang.org/p/e1-Xn6R-qQ

Bug, attribute name "prefixes" are dropped

Reading this XML file (an SVG) and then simply resaving it will write invalid characters in the CSS part.

The error that chrome gives on trying to read this SVG

This page contains the following errors:
error on line 2 at column 457: Attribute version redefined
Below is a rendering of the page up to the first error.

Line 2:
original

<svg
   xmlns:dc="http://purl.org/dc/elements/1.1/"
   xmlns:cc="http://creativecommons.org/ns#"
   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
   xmlns:svg="http://www.w3.org/2000/svg"
   xmlns="http://www.w3.org/2000/svg"
   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
   id="Logo"
   width="2139"
   height="2139"
   viewBox="0 0 2139 2139"
   version="1.1"
   sodipodi:docname="siknas07-alt03.svg"
   inkscape:version="0.92.1 r15371"
   inkscape:label="Cirkel">

rewritten file

<svg dc="http://purl.org/dc/elements/1.1/" cc="http://creativecommons.org/ns#" rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" svg="http://www.w3.org/2000/svg" xmlns="http://www.w3.org/2000/svg" sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd" inkscape="http://www.inkscape.org/namespaces/inkscape" id="Logo" width="2139" height="2139" viewBox="0 0 2139 2139" version="1.1" docname="siknas07-alt03.svg" version="0.92.1 r15371" label="Cirkel">

Seems like all prefixes are dropped from the attribute names, resulting in duplicate version:

version="1.1"
inkscape:version="0.92.1 r15371"

Becomes

version="1.1"
version="0.92.1 r15371"

Small program to reproduce this:

package main

import (
	"fmt"
	xmldom "github.com/subchen/go-xmldom"
)

var svgData = `
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<svg
   xmlns:dc="http://purl.org/dc/elements/1.1/"
   xmlns:cc="http://creativecommons.org/ns#"
   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
   xmlns:svg="http://www.w3.org/2000/svg"
   xmlns="http://www.w3.org/2000/svg"
   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
   id="Logo"
   width="2139"
   height="2139"
   viewBox="0 0 2139 2139"
   version="1.1"
   sodipodi:docname="siknas07-alt03.svg"
   inkscape:version="0.92.1 r15371"
   inkscape:label="Cirkel">
  <metadata
     id="metadata30">
    <rdf:RDF>
      <cc:Work
         rdf:about="">
        <dc:format>image/svg+xml</dc:format>
        <dc:type
           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
        <dc:title></dc:title>
      </cc:Work>
    </rdf:RDF>
  </metadata>
  <sodipodi:namedview
     pagecolor="#ffffff"
     bordercolor="#666666"
     borderopacity="1"
     objecttolerance="10"
     gridtolerance="10"
     guidetolerance="10"
     inkscape:pageopacity="0"
     inkscape:pageshadow="2"
     inkscape:window-width="1280"
     inkscape:window-height="961"
     id="namedview28"
     showgrid="false"
     inkscape:zoom="0.15603291"
     inkscape:cx="160.60893"
     inkscape:cy="1292.5084"
     inkscape:window-x="-8"
     inkscape:window-y="616"
     inkscape:window-maximized="1"
     inkscape:current-layer="g4553" />
  <defs
     id="defs4">
    <style
       id="style2">
      .cls-1 {
        fill: #35462d;
      }

      .cls-1, .cls-2, .cls-3, .cls-5 {
        fill-rule: evenodd;
      }

      .cls-2, .cls-5 {
        fill: none;
        stroke-width: 20px;
      }

      .cls-2 {
        stroke: #90a3bc;
      }

      .cls-3 {
        fill: #90a3bc;
      }

      .cls-4 {
        opacity: 0.08;
        mix-blend-mode: difference;
      }

      .cls-5 {
        stroke: #296d69;
      }
    </style>
    <clipPath
       clipPathUnits="userSpaceOnUse"
       id="clipPath4562">
      <circle
         cx="1069.5"
         cy="1069.5"
         r="1069.5"
         id="circle4564" />
    </clipPath>
    <clipPath clipPathUnits="userSpaceOnUse" id="SiknasClipPath">
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         inkscape:connector-curvature="0"
         style="fill:white;fill-rule:evenodd"
         inkscape:label="iknas_road_as_shape" />
      <path
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         class="cls-1"
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         inkscape:connector-curvature="0"
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  </defs>
  <g
     id="g4553"
     inkscape:label="Logo"
     clip-path="url(#clipPath4562)">
    <rect
       inkscape:label="Background"
       y="0"
       x="0"
       height="2151.8179"
       width="2161.4312"
       id="rect3713"
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    <g
       id="Siknas"
       inkscape:label="Siknas">
      <path
         id="iknäs_road_as_shape"
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         id="Hamnen" />
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         style="fill:none;fill-rule:evenodd;stroke:#296d69;stroke-width:20px"
         inkscape:connector-curvature="0"
         d="m 230,1406 c 0,0 -33.594,-37.01 -138,11 -104.406,48.01 -62,23 -62,23"
         class="cls-5"
         id="Viken" />
      <path
         style="fill:none;fill-rule:evenodd;stroke:#296d69;stroke-width:20px"
         inkscape:connector-curvature="0"
         d="m 559,1103 c 0,0 -183.833,125.62 -223,177 -39.167,51.38 -149.638,165.57 -162,239 -12.362,73.43 6.88,89.52 33,111 26.12,21.48 73.288,52.09 196,-13 122.712,-65.09 282.307,-194.32 374,-216 83.4,-19.72 263.28,-36.47 245,-146 -18.45,-110.53 -23,-121 -23,-121"
         class="cls-5"
         data-name="Runt byn"
         id="Runt_byn" />
      <path
         style="fill:none;fill-rule:evenodd;stroke:#296d69;stroke-width:20px"
         inkscape:connector-curvature="0"
         d="m 2135,133 -638,450 c 0,0 -125.27,105.348 -148,181 -31.24,103.975 -31.35,168.034 -13,256"
         class="cls-5"
         id="Lappkullen" />
    </g>
  </g>
  <circle
     id="circle4528"
     r="1069.5"
     cy="1069.5"
     cx="1069.5"
     style="display:none"
     inkscape:label="Cirkel" />
</svg>
`

func main() {
	fmt.Println(svgData)

	fmt.Println("---------------------------------")
		
	doc := xmldom.Must(xmldom.ParseXML(svgData))
	fmt.Println(doc.XMLPretty())
}

custom xml prefixes

I'd like to add namespaced attributes but I find that xpath queries seem to be ignored unless I recreate a new node. Not a bug of go-xmldom but i really can't see why it doesn't work within my code.

One of the things i tried to do was export the xml before the creation of the new node and after.
The only difference was the existence of a namespaced prefix ux:Class.

I tried adding a a namespace directive but its not respecting the existence of the prefix.

Just to get the code the work I would just recreate the node using the existing xml which weirdly allows the xpath query to work however later other weird side effects regarding other ux prefixes are ignored or just plain old don't exist after some simple node additions.

Do you have any suggestions for preserving custom prefixes?

How come this query does not return results?

I'm trying to search for a node in a document
I think my xpath query is correct in syntax but does not return any elements. The following test fails.

func TestLayerIDFinding(t *testing.T) {
	xm :=
		`<?xml version="1.0" encoding="UTF-8"?><_signin.SignInButton X="28" Y="352" Width="320" Height="50" LayerID="7FD41E11-85C2-45CC-AFFA-E9D480F22503" />`
	node := xmldom.Must(xmldom.ParseXML(xm))
	xpath := `//_signin.SignInButton[@LayerID="7FD41E11-85C2-45CC-AFFA-E9D480F22503"]`
	r := node.Root.QueryOne(xpath)
	if r == nil {
		t.Error("Could Not find element")
	} else {
		t.Log("Element found")
	}
}

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subchen / go-xmldom Goto Github PK

go-xmldom's People

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go-xmldom's Issues

Update XML example please

Array access with negative index

Parsing CDATA does not work

(Node) RemoveChild(Node) has a typo in the append() parameter

n.Children = append(n.Children[:1], n.Children[i+1:]...)

n.Children = append(n.Children[:i], n.Children[i+1:]...)

Bug, attribute name "prefixes" are dropped

custom xml prefixes

How come this query does not return results?

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React

Vue.js

Typescript

TensorFlow

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D3

Recommend Topics

javascript

web

server

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Visualization

Game

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Facebook

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Google

Alibaba

D3

Tencent