Contents

Generate yaml from xml and xml from yaml

Sergey Chulanov included in devops

2023-02-13 160 words One minute

Contents

First off we should get schema for out `pom.xml`. It is on the head of `pom.xml`:

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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">

Get it:

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wget http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd

Secondly, we need to install `xml2yaml`:

Debian, Ubuntu, Kali Linux, Raspbian:

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apt-get install libxml-compile-perl
xml2yaml help 
ERROR: no schema's specified

Next, there are exmaples of commands:

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xml2yaml xml-file schema-file(s)  >yaml-file
xml2yaml -x xml-file -s schema-files -o yaml-file
# for our cas `maven-4.0.0.xsd` was downloaded on the first step
xml2yaml -x pom.xml -s maven-4.0.0.xsd -o 1.yml

There is a useful link

After that, let’s install yq:

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sudo add-apt-repository ppa:rmescandon/yq
sudo apt update
sudo apt install yq

Then, try than everything is ok:

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yq -v

Finally, generate `xml` from `yaml`:

This we can’t get the same xml-file.

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yq  --xml-attribute-prefix @   \
    --xml-content-name '#text' \
    --input-format yaml        \
    --output-format xml        \
    1.yml > 1.xml