TargetPattern: support repository renaming
Support renaming of repositories at the level of the string representation of
target patterns. In this way, we can take the renaming, e.g., for execution
platforms, into account at a time where a pattern cannot yet be evaluated. This
is possible, as no expansion happens in the repository part of a pattern.
Change-Id: I001e82f3138f80665aeff4d7229c9c4449b3be44
PiperOrigin-RevId: 256953991
diff --git a/src/main/java/com/google/devtools/build/lib/cmdline/TargetPattern.java b/src/main/java/com/google/devtools/build/lib/cmdline/TargetPattern.java
index 02a9985..543699d 100644
--- a/src/main/java/com/google/devtools/build/lib/cmdline/TargetPattern.java
+++ b/src/main/java/com/google/devtools/build/lib/cmdline/TargetPattern.java
@@ -34,6 +34,7 @@
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
+import java.util.Map;
import java.util.Objects;
import java.util.regex.Pattern;
import javax.annotation.concurrent.Immutable;
@@ -642,6 +643,36 @@
}
}
+ /**
+ * Apply a renaming to the repository part of a pattern string, returning the renamed pattern
+ * string. This function only looks at the repository part of the pattern string, not the rest; so
+ * any syntactic errors will not be handled here, but simply remain. Similarly, if the repository
+ * part of the pattern is not syntactically valid, the renaming simply does not match and the
+ * string is returned unchanged.
+ */
+ public static String renameRepository(
+ String pattern, Map<RepositoryName, RepositoryName> renaming) {
+ if (!pattern.startsWith("@")) {
+ return pattern;
+ }
+ int pkgStart = pattern.indexOf("//");
+ if (pkgStart < 0) {
+ return pattern;
+ }
+ RepositoryName repository;
+ try {
+ repository = RepositoryName.create(pattern.substring(0, pkgStart));
+ } catch (LabelSyntaxException e) {
+ return pattern;
+ }
+ RepositoryName newRepository = renaming.get(repository);
+ if (newRepository == null) {
+ // No renaming required
+ return pattern;
+ }
+ return newRepository.getName() + pattern.substring(pkgStart);
+ }
+
@Immutable
public static final class Parser {
// A valid pattern either starts with exactly 0 slashes (relative pattern) or exactly two
