2 files changed, 18 insertions, 0 deletions
diff --git a/deps.mk b/deps.mk
index a4831c0..c1eb55c 100644
--- a/deps.mk
+++ b/deps.mk
@@ -16,6 +16,7 @@ sources.sh = \
 	src/tempname \
 	src/timestamp \
 	src/untill \
+	src/uri \
 	src/uuid \
 	src/varlist \
 
diff --git a/src/uri b/src/uri
new file mode 100755
index 0000000..39f1409
--- /dev/null
+++ b/src/uri
@@ -0,0 +1,17 @@
+#!/bin/sh
+set -eu
+
+awk '
+BEGIN {
+	for (i = 0; i < 256; i++) {
+		hex[sprintf("%c", i)] = sprintf("%%%02X", i)
+	}
+}
+
+{
+	for (i = 1; i < length($0); i++) {
+		c = substr($0, i, 1)
+		printf "%s", (c ~ /^[-._a-zA-Z0-9]$/ ? c : hex[c])
+	}
+}
+'