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Unified Diff: sdk/bin/pub_developer

Issue 68503004: Support symlinking to dart-sdk executables on Linux and Mac. (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: remove trailing whitespace Created 7 years, 1 month ago
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Index: sdk/bin/pub_developer
diff --git a/sdk/bin/pub_developer b/sdk/bin/pub_developer
index be0510d990fbc78797d73fe57c7d153a5591215b..287bb7db508cf6d66af67c7eb73430d77bd6453e 100755
--- a/sdk/bin/pub_developer
+++ b/sdk/bin/pub_developer
@@ -6,10 +6,21 @@
# Run pub.dart on the Dart VM. This script assumes the Dart SDK's directory
# structure.
-# Setting BIN_DIR this way is ugly, but is needed to handle the case where
-# dart-sdk/bin has been symlinked to. On MacOS, readlink doesn't work
-# with this case.
-BIN_DIR="$(cd "${0%/*}" ; pwd -P)"
+function follow_links() {
+ file="$1"
+ while [ -h "$file" ]; do
+ # On Mac OS, readlink -f doesn't work.
+ file="$(readlink "$file")"
+ done
+ echo "$file"
+}
+
+# Unlike $0, $BASH_SOURCE points to the absolute path of this file.
+PROG_NAME="$(follow_links "$BASH_SOURCE")"
+
+# Handle the case where dart-sdk/bin has been symlinked to.
+BIN_DIR="$(cd "${PROG_NAME%/*}" ; pwd -P)"
+
SDK_DIR="$(cd "${BIN_DIR}/.." ; pwd -P)"
SNAPSHOT="$BIN_DIR/snapshots/pub.dart.snapshot"
@@ -40,4 +51,4 @@ else
PUB="$SDK_DIR/lib/_internal/pub/bin/pub.dart"
exec "$DART" "--checked" "--package-root=$PACKAGES_DIR" "$PUB" "$@"
-fi
+fi
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