Is resource filtering in Gradle possible without using tokens? - gradle

Question

The recommended way to do resource filtering in Gradle is by having tokens in the properties file and then replacing them when processing.
Example
# config.properties
hostname = #myhost#
and in build.gradle do something like below
processResources {
filter ReplaceTokens, tokens: [
"myhost": project.property('myhost')
]
}
The problem with this approach is that it won't work when running from IDEs like eclipse. I would like the property files to be free of Gradle specific tokens i.e just have
hostname = localhost
but have option to replace it when building from Gradle.

Answer 1

You could use the following (not tested):
processResources {
filesMatching('**/config.properties') {
filter {
it.replace('localhost', project.property('myhost'))
}
}
}
Or you could have a default file, used during development in your IDE, and have another file containing tokens and replacing the development one when building using gradle. Something like this (not tested)
processResources {
exclude '**/config.properties'
filesMatching('**/config-prod.properties') {
setName 'config.properties'
filter ReplaceTokens, tokens: [
"myhost": project.property('myhost')
]
}
}

Answer 2

Can use thing like placeholder if you want.
In config.properties file
var1=${var1}
var2=${var2}
In gradle.properties file
processResources {
filesMatching('**config.properties') {
expand(
'var1': project.property('var1'),
'var2': project.property('var2'),
)
}
}

Answer 3

The spring-boot approach
project.version=X.X.X.X
info.build.version=#project.version#
http://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#production-ready-application-info-automatic-expansion

Answer 4

# File: application.yml
# forward gradle properties to spring boot properties
version: #version#
Setup gradle task (tested with Gradle 7.4):
import org.apache.tools.ant.filters.ReplaceTokens
processResources {
with copySpec {
from 'src/main/resources'
include 'application*.yml'
duplicatesStrategy 'include'
project.properties.findAll {it.value != null}.each {
filter(ReplaceTokens, tokens: [(it.key): it.value.toString()])
}
}
}
Resulting file:
# File: application.yml
# forward gradle properties to spring boot properties
version: 0.0.1-SNAPSHOT