> For the complete documentation index, see [llms.txt](https://docs.onum.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.onum.com/actions-changelog/parser.md).

# Parser

Learn more about this Action in [this article](/pipelines/actions/transformation/parser.md).

<details>

<summary>v1.2.1</summary>

<mark style="background-color:purple;">**Released on**</mark> <mark style="background-color:purple;"></mark><mark style="background-color:purple;">04/30/2026</mark>

Minor bug fixes

</details>

<details>

<summary>v1.2.0</summary>

<mark style="background-color:purple;">**Released on**</mark> <mark style="background-color:purple;"></mark><mark style="background-color:purple;">01/15/2025</mark>

User interface improved.

</details>

<details>

<summary>v1.1.0</summary>

<mark style="background-color:purple;">**Released on**</mark> <mark style="background-color:purple;"></mark><mark style="background-color:purple;">08/08/2025</mark>

* Performance improved.
* Included the ability to use the `optional` operator in groups. Everything inside the group marked as optional could be included or excluded from the log, and it would be parsed correctly.

</details>

<details>

<summary>v1.0.2</summary>

<mark style="background-color:purple;">**Released on**</mark> <mark style="background-color:purple;"></mark><mark style="background-color:purple;">08/01/2025</mark>

We've resolved some issues in XML parsers related to map-typed XPath fields.

</details>

<details>

<summary>v1.0.1</summary>

<mark style="background-color:purple;">**Released on**</mark> <mark style="background-color:purple;"></mark><mark style="background-color:purple;">07/04/2025</mark>

Raw byte values for integer and float fields are no longer stored in order to avoid inconsistencies in downstream actions (e.g., Message Builder).

</details>

<details>

<summary>v1.0.0</summary>

<mark style="background-color:purple;">**Released on**</mark> <mark style="background-color:purple;"></mark><mark style="background-color:purple;">05/23/2025</mark>

Support new subtypes in the options `fields` and `indices` of a `keyValueList`. Now, it supports lists, so that it is able to extract all the values of a key that is duplicated. For example:

```
key1=value1 key2=value key1=anotherValue1
```

</details>

<details>

<summary>v0.5.0</summary>

<mark style="background-color:purple;">**Released on**</mark> <mark style="background-color:purple;"></mark><mark style="background-color:purple;">05/08/2025</mark>

* Added support for XML parsing.
* Key-value lists now detect single quotes.

</details>

<details>

<summary>v0.4.1</summary>

<mark style="background-color:purple;">**Released on**</mark> <mark style="background-color:purple;"></mark><mark style="background-color:purple;">01/31/2025</mark>

* Eager value evaluation on JSON and CSV files.
* Removed characters unescaping except in JSON and CSV files.
* Allow long values for the option `kvSeparator` of `key-values`.
* Fixed key-value detection when a key-value separator appears in the value part.

</details>

<details>

<summary>v0.4.0</summary>

<mark style="background-color:purple;">**Released on**</mark> <mark style="background-color:purple;"></mark><mark style="background-color:purple;">11/27/2024</mark>

* Added support for escape sequences in string and key-value fields.
* Support any character as a key-value pair separator.

</details>

<details>

<summary>v0.3.2</summary>

<mark style="background-color:purple;">**Released on**</mark> <mark style="background-color:purple;"></mark><mark style="background-color:purple;">09/18/2024</mark>

Fixed CSV and key-value parser bug when parsing empty integer, float, or boolean fields.

</details>

<details>

<summary>v0.3.1</summary>

<mark style="background-color:purple;">**Released on**</mark> <mark style="background-color:purple;"></mark><mark style="background-color:purple;">08/14/2024</mark>

Fixed parser in JSON empty string value.

</details>

<details>

<summary>v0.3.0</summary>

<mark style="background-color:purple;">**Released on**</mark> <mark style="background-color:purple;"></mark><mark style="background-color:purple;">07/04/2024</mark>

Minor bug fixing.

</details>

<details>

<summary>v0.2.0</summary>

<mark style="background-color:purple;">**Released on**</mark> <mark style="background-color:purple;"></mark><mark style="background-color:purple;">07/04/2024</mark>

JSON parser now parses strings with 2 backlashes in a row correctly.

</details>

<details>

<summary>v0.1.0</summary>

<mark style="background-color:purple;">**Released on**</mark> <mark style="background-color:purple;"></mark><mark style="background-color:purple;">04/12/2024</mark>

Support PCL-grammar syntax with aliases and restricted field names.

</details>

<details>

<summary>v0.0.1</summary>

<mark style="background-color:purple;">**Released on**</mark> <mark style="background-color:purple;"></mark><mark style="background-color:purple;">07/05/2023</mark>

Initial version

</details>