1 files changed, 115 insertions, 0 deletions
diff --git a/src/util/parseconf.sh b/src/util/parseconf.sh
new file mode 100644
index 0000000..d215a99
--- /dev/null
+++ b/src/util/parseconf.sh
@@ -0,0 +1,115 @@
+#!/bin/sh
+
+usage () {
+    printf "Usage $0 "
+    echo << "EOF"
+OPTIONS... [FILTER]
+
+Print the parsed config file filtering by the keys
+Arguments:
+    -f file         read configuration from a file, uses /dev/sdtin otherwise
+    -v              only print values
+    -c n            print the last [n]
+EOF
+}
+
+# parse a single config file line
+#
+parse_line() {
+    [ "$#" = 0 ] && return
+
+    local line="$@"
+    local key=$1
+
+    shift
+    local value="$@"
+    value=${value%#*}
+
+    case $key in 
+        "include")
+            cat $value | parse
+            return
+            ;;
+        "]")
+            IFS=. 
+            set -- $list
+            list="${*%${!#}}"
+            IFS=" " 
+            printf "\n"
+            return
+            ;;
+        "}")
+            [ "$level" = "${level%.*}" ] &&
+                level="" || level=${level%.*}
+            return
+            ;;
+    esac
+
+    case ${value##* } in 
+        "{")
+            level="${level}${level:+.}${key}"
+            ;;
+        "[")
+            list="${list}${list:+.}${key}"
+            printf "$level${level:+.}$key:"
+            ;;
+        *)
+
+            [ "${#list}" = "0" ] && 
+                printf "$level${level:+.}$key:$value\n" ||
+                printf "$line "
+            ;;
+    esac
+}
+
+# print the parsed values from the config file in key:value format
+#
+parse () {
+    local file="$1"
+
+    export level=""
+    export list=""
+    while IFS= read -r line; do
+        parse_line $line 
+    done < "/dev/stdin" 
+}
+
+# Use the env variable if exists
+[ -z ${CONF_FILE} ] && CONF_FILE="/dev/stdin"
+
+# initialise options
+print_keys=true
+count=
+
+while getopts ":f:c:v" opt; do
+    case "${opt}" in 
+        f)
+            [ "${OPTARG}" = "-" ] &&
+                CONF_FILE="/dev/stdin" ||
+                CONF_FILE="${OPTARG}"
+            ;;
+
+        v)
+            print_keys=false
+            ;;
+        c)
+            count="${OPTARG}q"
+            ;;
+        *)
+    esac
+done
+
+shift $((OPTIND-1))
+
+[ $# = 0 ] &&
+    pattern=".*" ||
+    pattern=$(echo $@ | sed "s/\*/[^:]*/g")
+
+$print_keys && 
+    pattern="s/^($pattern:.+)/\1/p;${count}" ||
+    pattern="s/^$pattern:(.+)/\1/p;${count}"
+
+# strip whitespace
+sed "s/^\s*#.*$\|\s(\s\+)\|^\s\|\s^\|;*$//g" $CONF_FILE |
+    parse $@ | 
+    sed -rn $pattern