[PATCH v2 1/4] util: add copy function

[Jonatan Schlag <jonatan.schlag@ipfire.org>]

[-- Attachment #1: Type: text/plain, Size: 957 bytes --]

Adds a nice function to copy simple configuration files.

Signed-off-by: Jonatan Schlag <jonatan.schlag(a)ipfire.org>
---
 src/functions/functions.util | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/src/functions/functions.util b/src/functions/functions.util
index 0a9b3d6..a6c98c6 100644
--- a/src/functions/functions.util
+++ b/src/functions/functions.util
@@ -766,3 +766,29 @@ hex2dec() {
 dec2hex() {
 	printf "%02x\n" "${1}"
 }
+
+
+copy() {
+	# This function just copy to config files
+	assert [ $# -eq 2 ]
+	src=${1}
+	dst=${2}
+
+	local data=$(fread ${src})
+	if [ ! $? -eq 0 ]; then
+		log ERROR "Could not read data from ${src}"
+		return ${EXIT_ERROR}
+	fi
+
+	if [  -e ${dst} ]; then
+		log ERROR "Destination ${dst} already exist"
+		return ${EXIT_ERROR}
+	else
+		touch ${dst}
+	fi
+
+	if ! fwrite ${dst} "${data}"; then
+		log ERROR "Could not write data to ${dst}"
+		return ${EXIT_ERROR}
+	fi
+}
-- 
2.6.3