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package cbt
import java.nio.file.Files._
trait GeneratedSections extends BaseBuild{
def generatedSectionStartMarker( name: String ) = s"AUTO GENERATED SECTION BEGIN: $name "
def generatedSectionEndMarker( name: String ) = s"AUTO GENERATED SECTION END: $name "
assert(
generatedSectionStartMarker("foo").endsWith(" "),
"generatedSectionStartMarker needs to end with a space character"
)
assert(
generatedSectionEndMarker("foo").endsWith(" "),
"generatedSectionEndMarker needs to end with a space character"
)
def replacements: Seq[(String, String)]
def generate = {
def replaceSections(subject: String, sections: Seq[(String, String)]): String = {
sections.headOption.map{
case (name, replacement) =>
replaceSections(
s"(?s)(\n[^\n]*AUTO GENERATED SECTION BEGIN: $name [^\n]*\n).*(\n[^\n]*AUTO GENERATED SECTION END: $name [^\n]*\n)"
.r.replaceAllIn( subject, m => m.group(1) ++ replacement ++ m.group(2) ),
sections.tail
)
}.getOrElse(subject)
}
val updated = sourceFiles.flatMap{ file =>
val template = file.readAsString
val replaced = replaceSections( template, replacements )
if( template != replaced ) {
write( file.toPath, replaced.getBytes )
Some(file)
} else None
}
logger.log("generated-sections","Updated:" + updated.map(_ ++ "\n").mkString)
}
}
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