Append to text file

org.openrewrite.text.AppendToTextFile

Appends or replaces content of an existing plain text file, or creates a new one if it doesn't already exist. Please note that this recipes requires existing plain text files' format to be successfully parsable by OpenRewrite. If a file is left unchanged, it might be parsed as a Quark rather than plain text. In such case, use the plainTextMask option. See the Gradle or Maven plugin configuration page.

Recipe source

GitHub, Issue Tracker, Maven Central

• groupId: org.openrewrite
• artifactId: rewrite-core
• version: 8.40.2

Options

Type	Name	Description	Example
String	relativeFileName	File name, using a relative path. If a non-plaintext file already exists at this location, then this recipe will do nothing.	foo/bar/baz.txt
String	content	Multiline text content to be appended to the file.	Some text.
String	preamble	Optional. If a new file is created, this content will be included at the beginning.	# File generated by OpenRewrite #
Boolean	appendNewline	Optional. Print a newline automatically after the content (and preamble). Default true.
Strategy	existingFileStrategy	Optional. Determines behavior if a file exists at this location prior to Rewrite execution.

• Continue: append new content to existing file contents. If existing file is not plaintext, recipe does nothing.
• Replace: remove existing content from file.
• Leave: (default) do nothing. Existing file is fully preserved.

Note: this only affects the first interaction with the specified file per Rewrite execution. Subsequent instances of this recipe in the same Rewrite execution will always append. Valid options: Continue, Replace, Leave | |

Usage

This recipe has required configuration parameters. Recipes with required configuration parameters cannot be activated directly. To activate this recipe you must create a new recipe which fills in the required parameters. In your rewrite.yml create a new recipe with a unique name. For example: com.yourorg.AppendToTextFileExample. Here's how you can define and customize such a recipe within your rewrite.yml:

rewrite.yml

---
type: specs.openrewrite.org/v1beta/recipe
name: com.yourorg.AppendToTextFileExample
displayName: Append to text file example
recipeList:
  - org.openrewrite.text.AppendToTextFile:
      relativeFileName: foo/bar/baz.txt
      content: Some text.
      preamble: # File generated by OpenRewrite #

Now that com.yourorg.AppendToTextFileExample has been defined, activate it in your build file:

Gradle

1. Add the following to your build.gradle file:

build.gradle

plugins {
    id("org.openrewrite.rewrite") version("6.27.1")
}

rewrite {
    activeRecipe("com.yourorg.AppendToTextFileExample")
    setExportDatatables(true)
}

repositories {
    mavenCentral()
}

2. Run gradle rewriteRun to run the recipe.

Maven

1. Add the following to your pom.xml file:

pom.xml

<project>
  <build>
    <plugins>
      <plugin>
        <groupId>org.openrewrite.maven</groupId>
        <artifactId>rewrite-maven-plugin</artifactId>
        <version>5.45.0</version>
        <configuration>
          <exportDatatables>true</exportDatatables>
          <activeRecipes>
            <recipe>com.yourorg.AppendToTextFileExample</recipe>
          </activeRecipes>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>

2. Run mvn rewrite:run to run the recipe.

Moderne CLI

You will need to have configured the Moderne CLI on your machine before you can run the following command.

shell

mod run . --recipe AppendToTextFileExample

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Data Tables

Source files that had results

org.openrewrite.table.SourcesFileResults

Source files that were modified by the recipe run.

Column Name	Description
Source path before the run	The source path of the file before the run. null when a source file was created during the run.
Source path after the run	A recipe may modify the source path. This is the path after the run. null when a source file was deleted during the run.
Parent of the recipe that made changes	In a hierarchical recipe, the parent of the recipe that made a change. Empty if this is the root of a hierarchy or if the recipe is not hierarchical at all.
Recipe that made changes	The specific recipe that made a change.
Estimated time saving	An estimated effort that a developer to fix manually instead of using this recipe, in unit of seconds.
Cycle	The recipe cycle in which the change was made.

Source files that errored on a recipe

org.openrewrite.table.SourcesFileErrors

The details of all errors produced by a recipe run.

Column Name	Description
Source path	The file that failed to parse.
Recipe that made changes	The specific recipe that made a change.
Stack trace	The stack trace of the failure.

Recipe performance

org.openrewrite.table.RecipeRunStats

Statistics used in analyzing the performance of recipes.

Column Name	Description
The recipe	The recipe whose stats are being measured both individually and cumulatively.
Source file count	The number of source files the recipe ran over.
Source file changed count	The number of source files which were changed in the recipe run. Includes files created, deleted, and edited.
Cumulative scanning time	The total time spent across the scanning phase of this recipe.
99th percentile scanning time	99 out of 100 scans completed in this amount of time.
Max scanning time	The max time scanning any one source file.
Cumulative edit time	The total time spent across the editing phase of this recipe.
99th percentile edit time	99 out of 100 edits completed in this amount of time.
Max edit time	The max time editing any one source file.

Contributors

Jonathan Schnéider, Nick McKinney, Tim te Beek, Maxime Michel, Knut Wannheden, Sam Snyder, Kun Li