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-rw-r--r--src/makefile/functions.rs27
1 files changed, 27 insertions, 0 deletions
diff --git a/src/makefile/functions.rs b/src/makefile/functions.rs
index e6efd1c..2192d26 100644
--- a/src/makefile/functions.rs
+++ b/src/makefile/functions.rs
@@ -20,6 +20,10 @@ pub fn expand_call(
assert_eq!(args.len(), 3);
text::subst(macros, &args[0], &args[1], &args[2])
}
+ "patsubst" => {
+ assert_eq!(args.len(), 3);
+ text::patsubst(macros, &args[0], &args[1], &args[2])
+ }
"strip" => {
assert_eq!(args.len(), 1);
text::strip(macros, &args[0])
@@ -148,6 +152,29 @@ mod text {
Ok(text.replace(&from, &to))
}
+ pub fn patsubst(
+ macros: &MacroSet,
+ from: &TokenString,
+ to: &TokenString,
+ text: &TokenString,
+ ) -> Result<String> {
+ let from = macros.expand(from)?;
+ let to = macros.expand(to)?;
+ let text = macros.expand(text)?;
+ let words = text
+ .split_whitespace()
+ .map(|word| {
+ let pattern_match = r#match(&from, word)?.and_then(|x| x.get(1));
+ Ok(if let Some(pm) = pattern_match {
+ to.replace('%', pm.as_str())
+ } else {
+ word.to_owned()
+ })
+ })
+ .collect::<Result<Vec<_>>>()?;
+ Ok(words.join(" "))
+ }
+
pub fn strip(macros: &MacroSet, text: &TokenString) -> Result<String> {
let text = macros.expand(text)?;
// TODO don't allocate this vec