a-magdy · November 13, 2023 14:01 · Nov 13, 2023 · Aug 31, 2023 · Aug 31, 2023 · Aug 31, 2023
diff --git a/source_env_var_file b/source_env_var_file
@@ -0,0 +1,47 @@
+# Export all variables from a env var file
+# $1 => env var file path
+source_env_var_file() {
+  file="$1"
+
+  if [ ! -f "$file" ]; then
+    echo "Error: $file does not exist"
+    return 1
+  fi
+
+  while IFS= read -r line; do
+    # Trim whitespace from start and end of line
+    line=$(echo "$line" | sed 's/^[[:space:]]*//; s/[[:space:]]*$//')
+
+    # Validate the line against the regex (skips empty lines and comments and lines where key is not valid)
+    [[ ! "$line" =~ ^[A-Za-z_][A-Za-z0-9_]*=.* ]] && continue
+    # # Skip empty lines
+    # [ -z "$line" ] && continue
+    # # Skip comments
+    # [[ "$line" =~ ^#.*$ ]] && continue
+
+    # Split the line into a key and value
+    key=$(echo "$line" | cut -d "=" -f 1)
+    value=$(echo "$line" | cut -d "=" -f 2-)
+
+    # Trim whitespace from start and end of value
+    value=$(echo "$value" | sed 's/^[[:space:]]*//; s/[[:space:]]*$//')
+
+    # Skip if the key or value is empty
+    [ -z "$key" ] || [ -z "$value" ] && continue
+
+    # If the value isn't wrapped in quotes and contains any special characters, wrap it in single quotes
+    if [[ "$value" != "'"* && "$value" != '"'* ]] && [[ "$value" =~ [[:space:]\!\@\#\$\%\^\&\*\(\)\[\]\{\}\<\>\?\!\~\`\:\;\+\=\-\.\/\\\|] ]]; then
+      value="'$value'"
+    fi
+
+    # Export the variable
+    export "$key"="$value"
+  done <"$file"
+
+  # # eval "$(grep -E '^export [A-Za-z_][A-Za-z0-9_]*=.*' "$file")" # validates lines with regex as (export key=value) and evals the line
+  # eval "$(grep -E '^[A-Za-z_][A-Za-z0-9_]*=.*' "$file" | sed 's/.*/export &;/')" # normal approach - validate lines with regex as (key=value) and export them
+
+  # Special chars to check: \s,!,@,#,$,%,^,&,*,(,),[,],{,},<,>,?,!,~,`,",',:,;,+,=,-,.,_,/,\,|
+  # Wrap the value in single quotes if contains special chars and not already wrapped
+  # eval "$(grep -E '^[A-Za-z_][A-Za-z0-9_]*=.*' "$file" | sed 's/^[[:space:]]*//; s/[[:space:]]*$//; s/[^A-Za-z0-9_]=/=/; s/.*/&;/; s/=[^'"'"'A-Za-z0-9_]/='\''&'\''/')"
+}
diff --git a/scripts.sh → env.sh b/scripts.sh → env.sh
diff --git a/.env → example.env b/.env → example.env
diff --git a/.env b/.env
@@ -0,0 +1,7 @@
+# Example .env file
+
+
+
+
+VAR=something
+VAR2='one two three'
diff --git a/scripts.sh b/scripts.sh
@@ -1,6 +1,8 @@
 #!/bin/bash
 
-# send the file to grep directly
+# Use grep to validate each line using regex (clears out comments, empty lines and validates that each line is in the format of env vars)
+# Then send it out to sed, to append export at the beginning of each line and ; at the end
+# Then eval all
 eval "$(grep -E '^[A-Za-z_][A-Za-z0-9_]*=.*' '.env' | sed 's/.*/export &;/')"
 
 #====================================================================================

diff --git a/scripts.sh b/scripts.sh
@@ -1,10 +1,16 @@
 #!/bin/bash
 
+# send the file to grep directly
+eval "$(grep -E '^[A-Za-z_][A-Za-z0-9_]*=.*' '.env' | sed 's/.*/export &;/')"
+
+#====================================================================================
+# Archive
+#====================================================================================
 # Simple (Works for most cases)
 export $(grep -v '^#' .env | xargs)
-
 # Complex (Works with vars that contain spaces
 eval "$(cat '.env' | grep -v '^#' | grep -v '^$' | sed 's/.*/export &;/')"
-
 # Complex with 1 grep regex that covers all cases (comments, empty lines & validates the <var_name=...> style)
 eval "$(cat './.env.local' | grep -E '^[A-Za-z_][A-Za-z0-9_]*=.*' | sed 's/.*/export &;/')"
+
+#====================================================================================
diff --git a/scripts.sh b/scripts.sh
@@ -5,3 +5,6 @@ export $(grep -v '^#' .env | xargs)
 
 # Complex (Works with vars that contain spaces
 eval "$(cat '.env' | grep -v '^#' | grep -v '^$' | sed 's/.*/export &;/')"
+
+# Complex with 1 grep regex that covers all cases (comments, empty lines & validates the <var_name=...> style)
+eval "$(cat './.env.local' | grep -E '^[A-Za-z_][A-Za-z0-9_]*=.*' | sed 's/.*/export &;/')"
diff --git a/scripts.sh b/scripts.sh
@@ -0,0 +1,7 @@
+#!/bin/bash
+
+# Simple (Works for most cases)
+export $(grep -v '^#' .env | xargs)
+
+# Complex (Works with vars that contain spaces
+eval "$(cat '.env' | grep -v '^#' | grep -v '^$' | sed 's/.*/export &;/')"
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