Rewrite Python filters in awk

1 files changed, 39 insertions, 0 deletions

diff --git a/contrib/hldiff b/contrib/hldiff
new file mode 100755
index 0000000..f2bda8d
--- /dev/null
+++ b/contrib/hldiff
@@ -0,0 +1,39 @@
+#!/bin/awk -f
+BEGIN {
+	bright = "\x1B[1m"
+	red = "\x1B[31m"
+	green = "\x1B[32m"
+	cyan = "\x1B[36m"
+	reset = "\x1B[0m"
+
+	hit_diff = 0
+}
+{
+	if (hit_diff == 0) {
+		if ($0 ~ /^diff /) {
+			hit_diff = 1;
+			print bright $0 reset
+		} else if ($0 ~ /^ .*\|.*(\+|-)/) {
+			left = substr($0, 0, index($0, "|")-1)
+			right = substr($0, index($0, "|"))
+			gsub(/-+/, red "&" reset, right)
+			gsub(/\++/, green "&" reset, right)
+			print left right
+		} else {
+			print $0
+		}
+	} else {
+		if ($0 ~ /^-/) {
+			print red $0 reset
+		} else if ($0 ~ /^+/) {
+			print green $0 reset
+		} else if ($0 ~ /^ /) {
+			print $0
+		} else if ($0 ~ /^@@ (-[0-9]+,[0-9]+ \+[0-9]+,[0-9]+) @@.*/) {
+			sub(/^@@ (-[0-9]+,[0-9]+ \+[0-9]+,[0-9]+) @@/, cyan "&" reset)
+			print $0
+		} else {
+			print bright $0 reset
+		}
+	}
+}