Gradle copy task expand yaml file escape whole string - templates

Question

I have the following gradle task:
processResources {
inputs.properties(project.properties.findAll { it.value instanceof String })
filesMatching("**/*.yaml") {
filteringCharset = 'UTF-8'
expand project.properties
}
}
that I use to process a spring boot application.yaml file that contains variable placeholders.
How can I escape a whole log pattern without escaping every single special character, thus keeping the pattern clean?
application.yaml:
logging:
pattern:
console: %clr(%d{${LOG_DATEFORMAT_PATTERN:-yyyy-MM-dd HH:mm:ss.SSS}}){faint} %clr(${LOG_LEVEL_PATTERN:-%5p}) %clr(${PID:- }){magenta} %clr(---){faint} %clr([t]){faint} %clr(%-40.40logger{39}){cyan} %clr(:){faint} %m%n${LOG_EXCEPTION_CONVERSION_WORD:-%wEx}
Tried using slashy strings with no success:
1.Tried:
/%clr(%d{${LOG_DATEFORMAT_PATTERN:-yyyy-MM-dd HH:mm:ss.SSS}}){faint} %clr(${LOG_LEVEL_PATTERN:-%5p}) %clr(${PID:- }){magenta} %clr(---){faint} %clr([t]){faint} %clr(%-40.40logger{39}){cyan} %clr(:){faint} %m%n${LOG_EXCEPTION_CONVERSION_WORD:-%wEx}/
Error:
Caused by: groovy.lang.GroovyRuntimeException: Failed to parse template script (your template may contain an error or be trying to use expressions not currently supported): startup failed:
SimpleTemplateScript8.groovy: 138: expecting '}', found 'HH' # line 138, column 60.
ATEFORMAT_PATTERN:-yyyy-MM-dd HH:mm:ss.S
^
2.Tried:
$/%clr(%d{${LOG_DATEFORMAT_PATTERN:-yyyy-MM-dd HH:mm:ss.SSS}}){faint} %clr(${LOG_LEVEL_PATTERN:-%5p}) %clr(${PID:- }){magenta} %clr(---){faint} %clr([t]){faint} %clr(%-40.40logger{39}){cyan} %clr(:){faint} %m%n${LOG_EXCEPTION_CONVERSION_WORD:-%wEx}/$
Error:
Caused by: groovy.lang.GroovyRuntimeException: Failed to parse template script (your template may contain an error or be trying to use expressions not currently supported): startup failed:
SimpleTemplateScript10.groovy: 138: illegal string body character after dollar sign;
solution: either escape a literal dollar sign "\$5" or bracket the value expression "${5}" # line 138, column 15.
console: $/%clr(%d{${LOG_DATEFORMAT_PATTERN:-yyyy-MM-dd HH:mm:ss.SSS}}){faint} %clr(${LOG_LEVEL_PATTERN:-%5p}) %clr(${PID:- }){magenta} %clr(---){faint} %clr([t]){faint} %clr(%-40.40logger{39}){cyan} %clr(:){faint} %m%n${LOG_EXCEPTION_CONVERSION_WORD:-%wEx}/$
^

Answer 1

Given that your YAML files contains character which are interpreted as tokens by the expand method, relying on Groovy's SimpleTemplateEngine, you should use an alternative method like the filter methods.
The documentation shows a number of examples of filter. By using the underlying Ant ReplaceTokens you might have better luck, as it uses #token# as the notation.