From fe7edfe3a3d2e5fb47ea8349e30ebcd3190fd18e Mon Sep 17 00:00:00 2001
From: Peter Wu <peter@lekensteyn.nl>
Date: Sat, 29 Mar 2014 16:08:39 +0100
Subject: shell: extend with string functionality

---
 shell | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'shell')

diff --git a/shell b/shell
index 039f404..a0ab1fb 100755
--- a/shell
+++ b/shell
@@ -22,6 +22,9 @@ as in the following (non-meaningful) example:
 
 In this case, the message is padded with '0xff'.
 
+The data can also be interleaved with chars by starting an argument
+with a underscore (_). For example, "_foo" is equivalent to "66 6f 6f".
+
 This function does not show replies, use the 'read-dev-usbmon' program
 instead.
 HELP
@@ -34,6 +37,8 @@ HELP
 	fi
 
 	for arg; do
+		# clear the fill char, makes only sense as last argument
+		fillchar=
 		if [[ $arg =~ ^(0[xX])?[0-9a-fA-F]{1,2}(\.\.)?$ ]]; then
 			byte=${arg#0[Xx]}
 			byte=${byte%..}
@@ -42,6 +47,9 @@ HELP
 
 			# extend with last byte
 			[[ $arg != *.. ]] || fillchar=$byte
+		elif [[ $arg =~ ^_ ]]; then
+			# Literal string
+			bytes+=( $(echo -n "${arg#_}" | xxd -ps | fold -w2) )
 		else
 			echo "Invalid argument: $arg"
 			return 1
-- 
cgit v1.2.1