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replacetokens-task

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Azure Pipelines task to replace tokens in files with variables.

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# ReplaceTokens
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This Azure Pipelines task replaces tokens in text based files with variable values.

## What's new
Please refer to the [release page](https://github.com/qetza/replacetokens-task/releases/latest) for the latest release notes.

## Breaking changes in v7
Remove Node 16 support.

## Usage
### Inputs
```yaml
- task: qetza.replacetokens.replacetokens-task.replacetokens@7
  inputs:
    # A multiline list of files to replace tokens in.
    # Each line supports:
    #   - multiple glob patterns separated by a semi-colon ';' using fast-glob syntax 
    #     (you must always use forward slash '/' as a directory separator, on win32 will 
    #     automatically replace backslash with forward slash)
    #   - outputing the result in another file adding the output path after an arrow '=>' 
    #     (if the output path is a relative path, it will be relative to the input file)
    #   - wildcard replacement in the output file name using an asterix '*' in the input 
    #     and output file names
    #
    # Example: '**/*.json; !**/local/* => out/*.json' will match all files ending with 
    # '.json' in all directories and sub directories except in `local` directory and the 
    # output will be in a sub directory `out` relative to the input file keeping the file 
    # name.
    #
    # Required.
    sources: ''

# Add BOM when writing files.
    #
    # Optional. Default: false
    addBOM: ''

# A YAML formatted string containing additional variable values (keys are case-insensitive).
    # Value can be:
    #   - an object: properties will be parsed as key/value pairs
    #   - a string starting with '@': value is parsed as multiple glob patterns separated 
    #     by a semi-colon ';' using fast-glob syntax to JSON or YAML files
    #   - a string starting with '$': value is parsed as an environment variable name 
    #     containing JSON encoded key/value pairs
    #   - an array: each item must be an object or a string and will be parsed as 
    #     specified previously
    #
    # Multiple entries are merge into a single list of key/value pairs.
    #
    # Example:
    # - '@**/*.json;**/*.yml;!**/local/*'
    # - '$COMPUTER_VARS'
    # - var1: '${{ parameters.var1 }}'
    #
    # will add all variables from:
    # - '.json' and '.yml' files except under 'local' directory, 
    # - the environment variable 'COMPUTER_VARS'
    # - the inline variable 'var1'
    #
    # Optional.
    additionalVariables: ''

# Enable case-insensitive file path matching in glob patterns for sources and additionalVariables.
    #
    # Optional. Default: true
    caseInsensitivePaths: ''

# The characters to escape when using 'custom' escape.
    #
    # Optional.
    charsToEscape: ''

# The encoding to read and write all files.
    #
    # Accepted values:
    #   - auto: detect encoding using js-chardet
    #   - any value supported by iconv-lite
    #
    # Optional. Default: auto
    encoding: ''

# The character escape type to apply on each value.
    #
    # Accepted values:
    #  - auto: automatically apply JSON or XML escape based on file extension
    #  - off: don't escape values
    #  - json: JSON escape
    #  - xml: XML escape
    #  - custom: apply custom escape using escape-char and chars-to-escape
    #
    # Optional. Default: auto
    escape: ''

# The escape character to use when using 'custom' escape.
    #
    # Optional.
    escapeChar: ''

# The behavior if no files are found.
    #
    # Accepted values:
    #   - ignore: do not output any message, the action do not fail
    #   - warn: output a warning but do not fail the action
    #   - error: fail the action with an error message
    #
    # Optional. Default: ignore
    ifNoFilesFound: ''

# Include directories and files starting with a dot ('.') in glob matching results for sources and additionalVariables.
    #
    # Optional. Default: true
    includeDotPaths: ''

# The log level.
    #
    # Accepted values:
    #   - debug
    #   - info
    #   - warn
    #   - error
    #
    # Debug messages will always be sent to the internal debug system.
    # Error messages will always fail the action.
    #
    # Optional. Default: info
    logLevel: ''

# The behavior if variable is not found.
    #
    # Accepted values:
    #   - none: replace the token with an empty string and log a message
    #   - keep: leave the token and log a message
    #   - replace: replace with the value from missing-var-default and do not 
    #     log a message
    #
    # Optional. Default: none
    missingVarAction: ''

# The default value to use when a key is not found.
    #
    # Optional. Default: empty string
    missingVarDefault: ''

# The level to log key not found messages.
    #
    # Accepted values:
    #   - off
    #   - info
    #   - warn
    #   - error
    #
    # Optional. Default: warn
    missingVarLog: ''

# Enable token replacements in values recusively.
    #
    # Example: '#{message}#' with variables '{"message":"hello #{name}#!","name":"world"}' 
    # will result in 'hello world!'
    #
    # Optional. Default: false
    recursive: ''

# The root path to use when reading files with a relative path.
    #
    # Optional. Default: $(System.DefaultWorkingDirectory)
    root: ''

# The separtor to use when flattening keys in variables.
    #
    # Example: '{ "key": { "array": ["a1", "a2"], "sub": "s1" } }' will be flatten as 
    # '{ "key.array.0": "a1", "key.array.1": "a2", "key.sub": "s1" }'
    #
    # Optional. Default: .
    separator: ''

# Opt out of the anonymous telemetry feature.
    # You can also set the REPLACETOKENS_TELEMETRY_OPTOUT environment variable to '1' or 
    # 'true'.
    #
    # Optional. Default: false
    telemetryOptout: ''

# The token pattern to use.
    # Use 'custom' to provide your own prefix and suffix.
    #
    # Accepted values:
    #   - default: #{ ... }#
    #   - azpipelines: $( ... )
    #   - custom: token-prefix ... token-suffix
    #   - doublebraces: {{ ... }}
    #   - doubleunderscores: __ ... __
    #   - githubactions: ${{ ... }}
    #   - octopus: #{ ... }
    #
    # Optional. Default: default
    tokenPattern: ''

# The token prefix when using 'custom' token pattern.
    #
    # Optional.
    tokenPrefix: ''

# The token suffix when using 'custom' token pattern.
    #
    # Optional.
    tokenSuffix: ''

# Enable transforms on values.
    # The syntax to apply transform on a value is '#{<transform>(<name>[,<parameters>])}#'.
    #
    # Supported transforms:
    #   - base64(name): base64 encode the value
    #   - indent(name[, size, firstline]): indent lines in the value where size is the 
    #     indent size (default is '2') and firstline specifies if the first line must be 
    #     indented also (default is 'false')
    #   - lower(name): lowercase the value
    #   - raw(name): raw value (disable escaping)
    #   - upper(name): uppercase the value
    #
    # Example: 'key=#{upper(KEY1)}#' with '{ "KEY1": "value1" }' will result in 
    # 'key=VALUE1'
    #
    # Optional. Default: false
    transforms: ''

# The tranforms prefix when using transforms.
    #
    # Optional. Default: (
    transformsPrefix: ''

# The tranforms prefix when using transforms.
    #
    # Optional. Default: )
    transformsSuffix: ''

# Use only variables declared in 'additionalVariables'.
    #
    # Optional: Default: false
    useAdditionalVariablesOnly: ''
```

## Examples
### Multiple target files and opt out of sending telemetry data
```yaml
- task: qetza.replacetokens.replacetokens-task.replacetokens@7
  inputs:
    telemetryOptout: true
    sources: |
      **/*.json;!**/*.dev.json;!**/vars.json => _tmp/*.json
      **/*.yml
```

### Additional variables
```yaml
- task: qetza.replacetokens.replacetokens-task.replacetokens@7
  inputs:
    sources: '**/*.json'
    additionalVariables: |
      - '@**/vars.(json|yml|yaml)'      # read from files
      - '$ENV_VARS',                    # read from env
      - var1: '${{ parameters.var1 }}'  # inline key/value pairs
        var2: '${{ parameters.var2 }}'
```

### Access outputs
```yaml
steps:
- task: qetza.replacetokens.replacetokens-task.replacetokens@7
  name: replaceTokens
  inputs:
    sources: '**/*.json'
- script: |
    echo "defaults  : $(replaceTokens.defaults)"
    echo "files     : $(replaceTokens.files)"
    echo "replaced  : $(replaceTokens.replaced)"
    echo "tokens    : $(replaceTokens.tokens)"
    echo "transforms: $(replaceTokens.transforms)"
```

## Data/Telemetry
The Replace Tokens task for Azure Pipelines collects **anonymous** usage data and sends them by default to its author to help improve the product. If you don't wish to send usage data, you can change your telemetry settings through the `inputs` _telemetryOptout_ parameter or by setting the `REPLACETOKENS_TELEMETRY_OPTOUT` environment variable to `1` or `true`.

The following **anonymous** data is send:
- the **hash** of your collection id
- the **hash** of your project id and pipeline definition id
- the hosting (`server` or `cloud`)
- the agent OS (`Windows`, `macOS` or `Linux`)
- the inputs values for
  - _addBOM_
  - _caseInsensitivePaths_
  - _charsToEscape_
  - _encoding_
  - _escape_
  - _escapeChar_
  - _ifNoFilesFound_
  - _includeDotPaths_
  - _logLevel_
  - _missingVarAction_
  - _missingVarDefault_
  - _missingVarLog_
  - _recursive_
  - _separator_
  - _tokenPattern_
  - _tokenPrefix_
  - _tokenSuffix_
  - _transforms_
  - _transformsPrefix_
  - _transformsSuffix_
  - _useAdditionalVariablesOnly_
- the **number of** _sources_ entries
- the **number of** _additionalVariables_ entries referencing file
- the **number of** _additionalVariables_ entries referencing environment variables
- the **number of** _additionalVariables_ inline entries
- the task result (`succeed` or `failed`)
- the task execution duration
- the outputs (defaults, files, replaced, tokens and transforms)

You can see the JSON serialized telemetry data sent in debug logs.

replacetokens-task

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