refactor

scripts/validate.sh

@@ -0,0 +1,58 @@
+#!/bin/sh
+
+root="$PWD/image/overlay"
+env_file="${1:-.env}"
+
+if [ ! -f "$env_file" ]; then
+    echo "cannot find $env_file"
+    exit 1
+fi
+
+current_file=""
+
+fail=0
+
+while IFS= read -r line; do
+    case "$line" in
+        \#\ /*)
+            current_file="${line#\# }"
+
+            target="$root$current_file"
+
+            if [ ! -f "$target" ]; then
+                echo "missing file: $target" >&2
+                fail=1
+                current_file=""
+            fi
+            ;;
+        \#\:*)
+            continue
+            ;;
+        *=*)
+            if [ -z "$current_file" ]; then
+                echo "warning: value without file: $line" >&2
+                continue
+            fi
+
+            key="${line%%=*}"
+
+            target="$root$current_file"
+
+            if ! grep -q "_${key}_" "$target"; then
+                echo "missing variable: _${key}_ in $target" >&2
+                fail=1
+            fi
+            ;;
+
+        "")
+            continue
+            ;;
+
+        *)
+            echo "unknown line: $line" >&2
+            fail=1
+            ;;
+    esac
+done < "$env_file"
+
+exit "$fail"