From 8ce674db7ea92f6b3e551280b462c4f52ac74116 Mon Sep 17 00:00:00 2001
From: davidovski <david@davidovski.xyz>
Date: Sun, 13 Feb 2022 17:52:07 +0000
Subject: added test suite for parseconf

---
 src/parseconf | 106 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 106 insertions(+)
 create mode 100755 src/parseconf

(limited to 'src/parseconf')

diff --git a/src/parseconf b/src/parseconf
new file mode 100755
index 0000000..c5ed801
--- /dev/null
+++ b/src/parseconf
@@ -0,0 +1,106 @@
+#!/bin/bash
+
+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
+}
+
+# print the parsed values from the config file in key:value format
+#
+parse () {
+    local file="$1"
+    local level=""
+    local list=""
+    while IFS= read -r line; do
+        line=$(sed "s/\s\+/ /g" <<< "$line" | sed "s/^\s\|\s$\|;*$//g")
+        
+        grep -q "^#" <<< "$line" && continue
+        grep -q "." <<< "$line" || continue
+
+        local key=$(echo $line | cut -d" " -f1)
+        local value=$(echo $line | cut -d" " -f2-)
+
+        [ "$key" = "include" ] && parse $value && continue
+
+        case ${value: -1} in 
+            "{")
+                level="$level$key."
+                ;;
+            "[")
+                list="$list$key."
+                printf "$level$key:"
+                ;;
+            "}")
+                level=$(sed "s/[^\.]\w*\.$//g" <<< "$level")
+                ;;
+            "]")
+                printf "\n"
+                list=$(sed "s/[^\.]\w*\.$//g" <<< "$list")
+                ;;
+            *)
+
+                grep -q "." <<< "$list" && 
+                    printf "$line " ||
+                    printf "$level$key:$value\n"
+                ;;
+        esac
+    done < "$file"
+}
+
+# Filter the parsed file for specific keys
+#
+filter () {
+    local pattern=
+
+    [ $# = 0 ] &&
+        pattern=".*" ||
+        pattern=$(sed "s/\*/.*/g"<<< "$@")
+
+    $print_keys && 
+        pattern="s/^($pattern:.+)/\1/p" ||
+        pattern="s/^$pattern:(.+)/\1/p"
+
+
+    parse $CONF_FILE | sed -rn $pattern
+}
+
+# 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}"
+            ;;
+        *)
+    esac
+done
+
+shift $((OPTIND-1))
+
+[ -z ${count} ] &&
+    filter "$@" ||
+    filter "$@" | tail -n $count
+
+
-- 
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