Add onl(1df)

1 files changed, 28 insertions, 0 deletions

diff --git a/bin/onl.awk b/bin/onl.awk
new file mode 100644
index 00000000..140fb64c
--- /dev/null
+++ b/bin/onl.awk
@@ -0,0 +1,28 @@
+# Flatten input into one single-space separated line with no unprintable chars
+
+# For each not-all-spaces line:
+{ 
+    # Strip unprintable chars
+    gsub(/[^[:print:]]/, "")
+
+    # All horizontal whitespace groups to one space
+    gsub(/[ \t]+/, " ")
+
+    # No leading or trailing space
+    sub(/^ /, "")
+    sub(/ $/, "")
+
+    # If there's nothing left, go on to the next line
+    if (!length)
+        next
+
+    # If this isn't the first line, add a leading space
+    if (NR > 1)
+        printf " "
+
+    # Print the content without a newline
+    printf "%s", $0
+}
+
+# Print a newline to close the line
+END { printf "\n" }