bin/watch-build-logs: Add new script to watch build logs

1 files changed, 26 insertions, 0 deletions

diff --git a/bin/watch-build-logs b/bin/watch-build-logs
new file mode 100755
index 0000000..064dc85
--- /dev/null
+++ b/bin/watch-build-logs
@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+trap 'echo ""; kill -- -$$' INT
+
+# shellcheck source=../lib/load-configuration
+. "${0%/*}/../lib/load-configuration"
+
+runtail() {
+    # tail will quit with follow=name when the file is deleted
+    # thus no manual cleanup is needed
+    tail --follow=name "$1" -n +1 2>/dev/null &
+}
+
+# Check if we're already building something, and if so, tail it before we wait for new files
+CURRENTLOG=$(printf '%s\n' "$work_dir/"tmp.build-packages.*/*.build-log | sort | tail -n 1)
+if [[ -f $CURRENTLOG ]]; then
+    runtail "$CURRENTLOG"
+fi
+
+inotifywait -P -r -m "$work_dir" -e create --include '(\.build-log$)|(tmp\.build-packages\.[a-zA-Z0-9]+$)' --format '%w%f' -q |
+    while read -r FILE; do
+        if [[ -z $FILE || -d $FILE ]]; then
+            continue
+        fi
+
+        runtail "$FILE"
+    done