.github/dependabot.yml

@@ -1,10 +0,0 @@
-version: 2
-updates:
-  - package-ecosystem: "gomod"
-    directory: /
-    schedule:
-      interval: "daily"
-  - package-ecosystem: "github-actions"
-    directory: "/"
-    schedule:
-      interval: "daily"

.github/workflows/ci.yml

@@ -1,20 +0,0 @@
-name: CI
-
-on: [push]
-
-jobs:
-  test:
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: false
-      matrix:
-        go: [ '1.20', '1.19', '1.18', '1.17', '1.16' ]
-        os: [ ubuntu-latest, macOS-latest, windows-latest ]
-    name: ${{ matrix.os }} Go ${{ matrix.go }} Tests
-    steps:
-      - uses: actions/checkout@v3
-      - name: Setup go
-        uses: actions/setup-go@v4
-        with:
-          go-version: ${{ matrix.go }}
-      - run: go test

.github/workflows/codeql-analysis.yml

@@ -1,72 +0,0 @@
-# For most projects, this workflow file will not need changing; you simply need
-# to commit it to your repository.
-#
-# You may wish to alter this file to override the set of languages analyzed,
-# or to provide custom queries or build logic.
-#
-# ******** NOTE ********
-# We have attempted to detect the languages in your repository. Please check
-# the `language` matrix defined below to confirm you have the correct set of
-# supported CodeQL languages.
-#
-name: "CodeQL"
-
-on:
-  push:
-    branches: [ "main" ]
-  pull_request:
-    # The branches below must be a subset of the branches above
-    branches: [ "main" ]
-  schedule:
-    - cron: '31 4 * * 2'
-
-jobs:
-  analyze:
-    name: Analyze
-    runs-on: ubuntu-latest
-    permissions:
-      actions: read
-      contents: read
-      security-events: write
-
-    strategy:
-      fail-fast: false
-      matrix:
-        language: [ 'go' ]
-        # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python', 'ruby' ]
-        # Learn more about CodeQL language support at https://aka.ms/codeql-docs/language-support
-
-    steps:
-    - name: Checkout repository
-      uses: actions/checkout@v3
-
-    # Initializes the CodeQL tools for scanning.
-    - name: Initialize CodeQL
-      uses: github/codeql-action/init@v2
-      with:
-        languages: ${{ matrix.language }}
-        # If you wish to specify custom queries, you can do so here or in a config file.
-        # By default, queries listed here will override any specified in a config file.
-        # Prefix the list here with "+" to use these queries and those in the config file.
-        
-        # Details on CodeQL's query packs refer to : https://docs.github.com/en/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/configuring-code-scanning#using-queries-in-ql-packs
-        # queries: security-extended,security-and-quality
-
-        
-    # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
-    # If this step fails, then you should remove it and run the build manually (see below)
-    - name: Autobuild
-      uses: github/codeql-action/autobuild@v2
-
-    # ℹ️ Command-line programs to run using the OS shell.
-    # 📚 See https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstepsrun
-
-    #   If the Autobuild fails above, remove it and uncomment the following three lines. 
-    #   modify them (or add more) to build your code if your project, please refer to the EXAMPLE below for guidance.
-
-    # - run: |
-    #   echo "Run, Build Application using script"
-    #   ./location_of_script_within_repo/buildscript.sh
-
-    - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v2

.github/workflows/release.yml

@@ -1,31 +0,0 @@
-on:
-  push:
-    tags:
-    - 'v*' # Push events to matching v*, i.e. v1.0, v20.15.10
-
-name: Upload Release Assets
-
-jobs:
-  build:
-    name: Upload Release Assets
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v3
-      - name: Generate build files
-        uses: thatisuday/go-cross-build@v1.0.2
-        with:
-            platforms: 'linux/amd64, linux/ppc64le, darwin/amd64, darwin/arm64, windows/amd64'
-            package: 'cmd/godotenv'
-            name: 'godotenv'
-            compress: 'true'
-            dest: 'dist'
-      - name: Publish Binaries
-        uses: svenstaro/upload-release-action@v2
-        with:
-          repo_token: ${{ secrets.GITHUB_TOKEN }}
-          release_name: Release ${{ github.ref }}
-          tag: ${{ github.ref }}
-          file: dist/*
-          file_glob: true
-          overwrite: true

.travis.yml

@@ -0,0 +1,8 @@
+language: go
+
+go:
+  - 1.8
+
+os:
+  - linux
+  - osx

README.md

@@ -1,6 +1,6 @@
-# GoDotEnv ![CI](https://github.com/joho/godotenv/workflows/CI/badge.svg) [![Go Report Card](https://goreportcard.com/badge/github.com/joho/godotenv)](https://goreportcard.com/report/github.com/joho/godotenv)
+# GoDotEnv [![Build Status](https://travis-ci.org/joho/godotenv.svg?branch=master)](https://travis-ci.org/joho/godotenv) [![Build status](https://ci.appveyor.com/api/projects/status/9v40vnfvvgde64u4?svg=true)](https://ci.appveyor.com/project/joho/godotenv)
 
-A Go (golang) port of the Ruby [dotenv](https://github.com/bkeepers/dotenv) project (which loads env vars from a .env file).
+A Go (golang) port of the Ruby dotenv project (which loads env vars from a .env file)
 
 From the original Library:
 
@@ -8,9 +8,9 @@ From the original Library:
 >
 > But it is not always practical to set environment variables on development machines or continuous integration servers where multiple projects are run. Dotenv load variables from a .env file into ENV when the environment is bootstrapped.
 
-It can be used as a library (for loading in env for your own daemons etc.) or as a bin command.
+It can be used as a library (for loading in env for your own daemons etc) or as a bin command.
 
-There is test coverage and CI for both linuxish and Windows environments, but I make no guarantees about the bin version working on Windows.
+There is test coverage and CI for both linuxish and windows environments, but I make no guarantees about the bin version working on windows.
 
 ## Installation
 
@@ -21,13 +21,6 @@ go get github.com/joho/godotenv
 ```
 
 or if you want to use it as a bin command
-
-go >= 1.17
-```shell
-go install github.com/joho/godotenv/cmd/godotenv@latest
-```
-
-go < 1.17
 ```shell
 go get github.com/joho/godotenv/cmd/godotenv
 ```
@@ -47,10 +40,9 @@ Then in your Go app you can do something like
 package main
 
 import (
+    "github.com/joho/godotenv"
     "log"
     "os"
-
-    "github.com/joho/godotenv"
 )
 
 func main() {
@@ -75,8 +67,8 @@ import _ "github.com/joho/godotenv/autoload"
 While `.env` in the project root is the default, you don't have to be constrained, both examples below are 100% legit
 
 ```go
-godotenv.Load("somerandomfile")
+_ = godotenv.Load("somerandomfile")
-godotenv.Load("filenumberone.env", "filenumbertwo.env")
+_ = godotenv.Load("filenumberone.env", "filenumbertwo.env")
 ```
 
 If you want to be really fancy with your env file you can do comments and exports (below is a valid env file)
@@ -104,45 +96,6 @@ myEnv, err := godotenv.Read()
 s3Bucket := myEnv["S3_BUCKET"]
 ```
 
-... or from an `io.Reader` instead of a local file
-
-```go
-reader := getRemoteFile()
-myEnv, err := godotenv.Parse(reader)
-```
-
-... or from a `string` if you so desire
-
-```go
-content := getRemoteFileContent()
-myEnv, err := godotenv.Unmarshal(content)
-```
-
-### Precedence & Conventions
-
-Existing envs take precedence of envs that are loaded later.
-
-The [convention](https://github.com/bkeepers/dotenv#what-other-env-files-can-i-use)
-for managing multiple environments (i.e. development, test, production)
-is to create an env named `{YOURAPP}_ENV` and load envs in this order:
-
-```go
-env := os.Getenv("FOO_ENV")
-if "" == env {
-  env = "development"
-}
-
-godotenv.Load(".env." + env + ".local")
-if "test" != env {
-  godotenv.Load(".env.local")
-}
-godotenv.Load(".env." + env)
-godotenv.Load() // The Original .env
-```
-
-If you need to, you can also use `godotenv.Overload()` to defy this convention
-and overwrite existing envs instead of only supplanting them. Use with caution.
-
 ### Command Mode
 
 Assuming you've installed the command as above and you've got `$GOPATH/bin` in your `$PATH`
@@ -153,37 +106,11 @@ godotenv -f /some/path/to/.env some_command with some args
 
 If you don't specify `-f` it will fall back on the default of loading `.env` in `PWD`
 
-By default, it won't override existing environment variables; you can do that with the `-o` flag.
-
-### Writing Env Files
-
-Godotenv can also write a map representing the environment to a correctly-formatted and escaped file
-
-```go
-env, err := godotenv.Unmarshal("KEY=value")
-err := godotenv.Write(env, "./.env")
-```
-
-... or to a string
-
-```go
-env, err := godotenv.Unmarshal("KEY=value")
-content, err := godotenv.Marshal(env)
-```
-
 ## Contributing
 
-Contributions are welcome, but with some caveats.
+Contributions are most welcome! The parser itself is pretty stupidly naive and I wouldn't be surprised if it breaks with edge cases.
 
-This library has been declared feature complete (see [#182](https://github.com/joho/godotenv/issues/182) for background) and will not be accepting issues or pull requests adding new functionality or breaking the library API.
+*code changes without tests will not be accepted*
-
-Contributions would be gladly accepted that:
-
-* bring this library's parsing into closer compatibility with the mainline dotenv implementations, in particular [Ruby's dotenv](https://github.com/bkeepers/dotenv) and [Node.js' dotenv](https://github.com/motdotla/dotenv)
-* keep the library up to date with the go ecosystem (ie CI bumps, documentation changes, changes in the core libraries)
-* bug fixes for use cases that pertain to the library's purpose of easing development of codebases deployed into twelve factor environments
-
-*code changes without tests and references to peer dotenv implementations will not be accepted*
 
 1. Fork it
 2. Create your feature branch (`git checkout -b my-new-feature`)
@@ -191,12 +118,10 @@ Contributions would be gladly accepted that:
 4. Push to the branch (`git push origin my-new-feature`)
 5. Create new Pull Request
 
-## Releases
+## CI
 
-Releases should follow [Semver](http://semver.org/) though the first couple of releases are `v1` and `v1.1`.
+Linux: [![wercker status](https://app.wercker.com/status/507594c2ec7e60f19403a568dfea0f78/m "wercker status")](https://app.wercker.com/project/bykey/507594c2ec7e60f19403a568dfea0f78) Windows: [![Build status](https://ci.appveyor.com/api/projects/status/9v40vnfvvgde64u4)](https://ci.appveyor.com/project/joho/godotenv)
-
-Use [annotated tags for all releases](https://github.com/joho/godotenv/issues/30). Example `git tag -a v1.2.1`
 
 ## Who?
 
-The original library [dotenv](https://github.com/bkeepers/dotenv) was written by [Brandon Keepers](http://opensoul.org/), and this port was done by [John Barton](https://johnbarton.co/) based off the tests/fixtures in the original library.
+The original library [dotenv](https://github.com/bkeepers/dotenv) was written by [Brandon Keepers](http://opensoul.org/), and this port was done by [John Barton](http://whoisjohnbarton.com) based off the tests/fixtures in the original library.

autoload/autoload.go

@@ -8,7 +8,7 @@ package autoload
 	And bob's your mother's brother
 */
 
-import "git.coopcloud.tech/toolshed/godotenv"
+import "github.com/joho/godotenv"
 
 func init() {
 	godotenv.Load()

cmd/godotenv/cmd.go

@@ -7,7 +7,7 @@ import (
 
 	"strings"
 
-	"git.coopcloud.tech/toolshed/godotenv"
+	"github.com/joho/godotenv"
 )
 
 func main() {
@@ -15,15 +15,13 @@ func main() {
 	flag.BoolVar(&showHelp, "h", false, "show help")
 	var rawEnvFilenames string
 	flag.StringVar(&rawEnvFilenames, "f", "", "comma separated paths to .env files")
-	var overload bool
-	flag.BoolVar(&overload, "o", false, "override existing .env variables")
 
 	flag.Parse()
 
 	usage := `
-Run a process with an env setup from a .env file
+Run a process with a env setup from a .env file
 
-godotenv [-o] [-f ENV_FILE_PATHS] COMMAND_ARGS
+godotenv [-f ENV_FILE_PATHS] COMMAND_ARGS
 
 ENV_FILE_PATHS: comma separated paths to .env files
 COMMAND_ARGS: command and args you want to run
@@ -49,7 +47,7 @@ example
 	cmd := args[0]
 	cmdArgs := args[1:]
 
-	err := godotenv.Exec(envFilenames, cmd, cmdArgs, overload)
+	err := godotenv.Exec(envFilenames, cmd, cmdArgs)
 	if err != nil {
 		log.Fatal(err)
 	}

fixtures/comments.env

@@ -1,4 +0,0 @@
-# Full line comment
-foo=bar # baz
-bar=foo#baz
-baz="foo"#bar

fixtures/equals.env

@@ -1 +1,2 @@
 export OPTION_A='postgres://localhost:5432/database?sslmode=disable'
+

fixtures/plain.env

@@ -4,5 +4,4 @@ OPTION_C= 3
 OPTION_D =4
 OPTION_E = 5
 OPTION_F = 
-OPTION_G=
+OPTION_G=
-OPTION_H=1 2

fixtures/quoted.env

@@ -6,14 +6,3 @@ OPTION_E="1"
 OPTION_F="2"
 OPTION_G=""
 OPTION_H="\n"
-OPTION_I = "echo 'asd'"
-OPTION_J='line 1
-line 2'
-OPTION_K='line one
-this is \'quoted\'
-one more line'
-OPTION_L="line 1
-line 2"
-OPTION_M="line one
-this is \"quoted\"
-one more line"

fixtures/substitutions.env

@@ -1,5 +0,0 @@
-OPTION_A=1
-OPTION_B=${OPTION_A}
-OPTION_C=$OPTION_B
-OPTION_D=${OPTION_A}${OPTION_B}
-OPTION_E=${OPTION_NOT_DEFINED}

go.mod

@@ -1,3 +0,0 @@
-module git.coopcloud.tech/toolshed/godotenv
-
-go 1.12

godotenv.go

@@ -1,53 +1,37 @@
 // Package godotenv is a go port of the ruby dotenv library (https://github.com/bkeepers/dotenv)
 //
-// Examples/readme can be found on the GitHub page at https://github.com/joho/godotenv
+// Examples/readme can be found on the github page at https://github.com/joho/godotenv
 //
 // The TL;DR is that you make a .env file that looks something like
 //
-//	SOME_ENV_VAR=somevalue
+// 		SOME_ENV_VAR=somevalue
 //
 // and then in your go code you can call
 //
-//	godotenv.Load()
+// 		godotenv.Load()
 //
-// and all the env vars declared in .env will be available through os.Getenv("SOME_ENV_VAR")
+// and all the env vars declared in .env will be avaiable through os.Getenv("SOME_ENV_VAR")
 package godotenv
 
 import (
-	"bytes"
+	"bufio"
-	"fmt"
+	"errors"
-	"io"
 	"os"
 	"os/exec"
-	"sort"
-	"strconv"
 	"strings"
 )
 
-const doubleQuoteSpecialChars = "\\\n\r\"!$`"
-
-// Parse reads an env file from io.Reader, returning a map of keys and values.
-func Parse(r io.Reader) (map[string]string, map[string]map[string]string, error) {
-	var buf bytes.Buffer
-	_, err := io.Copy(&buf, r)
-	if err != nil {
-		return nil, nil, err
-	}
-
-	return UnmarshalBytes(buf.Bytes())
-}
-
 // Load will read your env file(s) and load them into ENV for this process.
 //
-// Call this function as close as possible to the start of your program (ideally in main).
+// Call this function as close as possible to the start of your program (ideally in main)
 //
-// If you call Load without any args it will default to loading .env in the current path.
+// If you call Load without any args it will default to loading .env in the current path
 //
-// You can otherwise tell it which files to load (there can be more than one) like:
+// You can otherwise tell it which files to load (there can be more than one) like
 //
-//	godotenv.Load("fileone", "filetwo")
+//		godotenv.Load("fileone", "filetwo")
 //
-// It's important to note that it WILL NOT OVERRIDE an env variable that already exists - consider the .env file to set dev vars or sensible defaults.
+// It's important to note that it WILL NOT OVERRIDE an env variable that already exists - consider the .env file to set dev vars or sensible defaults
 func Load(filenames ...string) (err error) {
 	filenames = filenamesOrDefault(filenames)
 
@@ -62,15 +46,15 @@ func Load(filenames ...string) (err error) {
 
 // Overload will read your env file(s) and load them into ENV for this process.
 //
-// Call this function as close as possible to the start of your program (ideally in main).
+// Call this function as close as possible to the start of your program (ideally in main)
 //
-// If you call Overload without any args it will default to loading .env in the current path.
+// If you call Overload without any args it will default to loading .env in the current path
 //
-// You can otherwise tell it which files to load (there can be more than one) like:
+// You can otherwise tell it which files to load (there can be more than one) like
 //
-//	godotenv.Overload("fileone", "filetwo")
+//		godotenv.Overload("fileone", "filetwo")
 //
-// It's important to note this WILL OVERRIDE an env variable that already exists - consider the .env file to forcefully set all vars.
+// It's important to note this WILL OVERRIDE an env variable that already exists - consider the .env file to forcefilly set all vars.
 func Overload(filenames ...string) (err error) {
 	filenames = filenamesOrDefault(filenames)
 
@@ -85,13 +69,12 @@ func Overload(filenames ...string) (err error) {
 
 // Read all env (with same file loading semantics as Load) but return values as
 // a map rather than automatically writing values into env
-func Read(filenames ...string) (envMap map[string]string, modMap map[string]map[string]string, err error) {
+func Read(filenames ...string) (envMap map[string]string, err error) {
 	filenames = filenamesOrDefault(filenames)
 	envMap = make(map[string]string)
-	modMap = make(map[string]map[string]string)
 
 	for _, filename := range filenames {
-		individualEnvMap, individualModMap, individualErr := readFile(filename)
+		individualEnvMap, individualErr := readFile(filename)
 
 		if individualErr != nil {
 			err = individualErr
@@ -101,44 +84,20 @@ func Read(filenames ...string) (envMap map[string]string, modMap map[string]map[
 		for key, value := range individualEnvMap {
 			envMap[key] = value
 		}
-
-		for key, value := range individualModMap {
-			modMap[key] = value
-		}
 	}
 
 	return
 }
 
-// Unmarshal reads an env file from a string, returning a map of keys and values.
-func Unmarshal(str string) (envMap map[string]string, modifierMap map[string]map[string]string, err error) {
-	return UnmarshalBytes([]byte(str))
-}
-
-// UnmarshalBytes parses env file from byte slice of chars, returning a map of keys and values.
-func UnmarshalBytes(src []byte) (map[string]string, map[string]map[string]string, error) {
-	vars := make(map[string]string)
-	modifiers := make(map[string]map[string]string)
-	err := parseBytes(src, vars, modifiers)
-
-	return vars, modifiers, err
-}
-
 // Exec loads env vars from the specified filenames (empty map falls back to default)
 // then executes the cmd specified.
 //
-// Simply hooks up os.Stdin/err/out to the command and calls Run().
+// Simply hooks up os.Stdin/err/out to the command and calls Run()
 //
 // If you want more fine grained control over your command it's recommended
-// that you use `Load()`, `Overload()` or `Read()` and the `os/exec` package yourself.
+// that you use `Load()` or `Read()` and the `os/exec` package yourself.
-func Exec(filenames []string, cmd string, cmdArgs []string, overload bool) error {
+func Exec(filenames []string, cmd string, cmdArgs []string) error {
-	op := Load
+	Load(filenames...)
-	if overload {
-		op = Overload
-	}
-	if err := op(filenames...); err != nil {
-		return err
-	}
 
 	command := exec.Command(cmd, cmdArgs...)
 	command.Stdin = os.Stdin
@@ -147,39 +106,6 @@ func Exec(filenames []string, cmd string, cmdArgs []string, overload bool) error
 	return command.Run()
 }
 
-// Write serializes the given environment and writes it to a file.
-func Write(envMap map[string]string, filename string) error {
-	content, err := Marshal(envMap)
-	if err != nil {
-		return err
-	}
-	file, err := os.Create(filename)
-	if err != nil {
-		return err
-	}
-	defer file.Close()
-	_, err = file.WriteString(content + "\n")
-	if err != nil {
-		return err
-	}
-	return file.Sync()
-}
-
-// Marshal outputs the given environment as a dotenv-formatted environment file.
-// Each line is in the format: KEY="VALUE" where VALUE is backslash-escaped.
-func Marshal(envMap map[string]string) (string, error) {
-	lines := make([]string, 0, len(envMap))
-	for k, v := range envMap {
-		if d, err := strconv.Atoi(v); err == nil {
-			lines = append(lines, fmt.Sprintf(`%s=%d`, k, d))
-		} else {
-			lines = append(lines, fmt.Sprintf(`%s="%s"`, k, doubleQuoteEscape(v)))
-		}
-	}
-	sort.Strings(lines)
-	return strings.Join(lines, "\n"), nil
-}
-
 func filenamesOrDefault(filenames []string) []string {
 	if len(filenames) == 0 {
 		return []string{".env"}
@@ -188,7 +114,7 @@ func filenamesOrDefault(filenames []string) []string {
 }
 
 func loadFile(filename string, overload bool) error {
-	envMap, _, err := readFile(filename)
+	envMap, err := readFile(filename)
 	if err != nil {
 		return err
 	}
@@ -202,33 +128,120 @@ func loadFile(filename string, overload bool) error {
 
 	for key, value := range envMap {
 		if !currentEnv[key] || overload {
-			_ = os.Setenv(key, value)
+			os.Setenv(key, value)
 		}
 	}
 
 	return nil
 }
 
-func readFile(filename string) (envMap map[string]string, modMap map[string]map[string]string, err error) {
+func readFile(filename string) (envMap map[string]string, err error) {
 	file, err := os.Open(filename)
 	if err != nil {
 		return
 	}
 	defer file.Close()
 
-	return Parse(file)
+	envMap = make(map[string]string)
+
+	var lines []string
+	scanner := bufio.NewScanner(file)
+	for scanner.Scan() {
+		lines = append(lines, scanner.Text())
+	}
+
+	if err = scanner.Err(); err != nil {
+		return
+	}
+
+	for _, fullLine := range lines {
+		if !isIgnoredLine(fullLine) {
+			var key, value string
+			key, value, err = parseLine(fullLine)
+
+			if err != nil {
+				return
+			}
+			envMap[key] = value
+		}
+	}
+	return
 }
 
-func doubleQuoteEscape(line string) string {
+func parseLine(line string) (key string, value string, err error) {
-	for _, c := range doubleQuoteSpecialChars {
+	if len(line) == 0 {
-		toReplace := "\\" + string(c)
+		err = errors.New("zero length string")
-		if c == '\n' {
+		return
-			toReplace = `\n`
-		}
-		if c == '\r' {
-			toReplace = `\r`
-		}
-		line = strings.Replace(line, string(c), toReplace, -1)
 	}
-	return line
+
+	// ditch the comments (but keep quoted hashes)
+	if strings.Contains(line, "#") {
+		segmentsBetweenHashes := strings.Split(line, "#")
+		quotesAreOpen := false
+		var segmentsToKeep []string
+		for _, segment := range segmentsBetweenHashes {
+			if strings.Count(segment, "\"") == 1 || strings.Count(segment, "'") == 1 {
+				if quotesAreOpen {
+					quotesAreOpen = false
+					segmentsToKeep = append(segmentsToKeep, segment)
+				} else {
+					quotesAreOpen = true
+				}
+			}
+
+			if len(segmentsToKeep) == 0 || quotesAreOpen {
+				segmentsToKeep = append(segmentsToKeep, segment)
+			}
+		}
+
+		line = strings.Join(segmentsToKeep, "#")
+	}
+
+	// now split key from value
+	splitString := strings.SplitN(line, "=", 2)
+
+	if len(splitString) != 2 {
+		// try yaml mode!
+		splitString = strings.SplitN(line, ":", 2)
+	}
+
+	if len(splitString) != 2 {
+		err = errors.New("Can't separate key from value")
+		return
+	}
+
+	// Parse the key
+	key = splitString[0]
+	if strings.HasPrefix(key, "export") {
+		key = strings.TrimPrefix(key, "export")
+	}
+	key = strings.Trim(key, " ")
+
+	// Parse the value
+	value = splitString[1]
+
+	// trim
+	value = strings.Trim(value, " ")
+
+	// check if we've got quoted values
+	if value != "" {
+		first := string(value[0:1])
+		last := string(value[len(value)-1:])
+		if first == last && strings.ContainsAny(first, `"'`) {
+			// pull the quotes off the edges
+			value = strings.Trim(value, `"'`)
+
+			// expand quotes
+			value = strings.Replace(value, `\"`, `"`, -1)
+			// expand newlines
+			value = strings.Replace(value, `\n`, "\n", -1)
+		}
+	}
+
+	return
+}
+
+func isIgnoredLine(line string) bool {
+	trimmedLine := strings.Trim(line, " \n\t")
+	return len(trimmedLine) == 0 || strings.HasPrefix(trimmedLine, "#")
 }

godotenv_test.go

@@ -1,24 +1,16 @@
 package godotenv
 
 import (
-	"bytes"
-	"fmt"
 	"os"
-	"reflect"
-	"strings"
 	"testing"
 )
 
 var noopPresets = make(map[string]string)
 
 func parseAndCompare(t *testing.T, rawEnvLine string, expectedKey string, expectedValue string) {
-	result, _, err := Unmarshal(rawEnvLine)
+	key, value, _ := parseLine(rawEnvLine)
-	if err != nil {
+	if key != expectedKey || value != expectedValue {
-		t.Errorf("Expected %q to parse as %q: %q, errored %q", rawEnvLine, expectedKey, expectedValue, err)
+		t.Errorf("Expected '%v' to parse as '%v' => '%v', got '%v' => '%v' instead", rawEnvLine, expectedKey, expectedValue, key, value)
-		return
-	}
-	if result[expectedKey] != expectedValue {
-		t.Errorf("Expected '%v' to parse as '%v' => '%v', got %q instead", rawEnvLine, expectedKey, expectedValue, result)
 	}
 }
 
@@ -39,7 +31,7 @@ func loadEnvAndCompareValues(t *testing.T, loader func(files ...string) error, e
 		envValue := os.Getenv(k)
 		v := expectedValues[k]
 		if envValue != v {
-			t.Errorf("Mismatch for key '%v': expected '%#v' got '%#v'", k, v, envValue)
+			t.Errorf("Mismatch for key '%v': expected '%v' got '%v'", k, v, envValue)
 		}
 	}
 }
@@ -84,10 +76,9 @@ func TestReadPlainEnv(t *testing.T) {
 		"OPTION_E": "5",
 		"OPTION_F": "",
 		"OPTION_G": "",
-		"OPTION_H": "1 2",
 	}
 
-	envMap, _, err := Read(envFileName)
+	envMap, err := Read(envFileName)
 	if err != nil {
 		t.Error("Error reading file")
 	}
@@ -103,23 +94,6 @@ func TestReadPlainEnv(t *testing.T) {
 	}
 }
 
-func TestParse(t *testing.T) {
-	envMap, _, err := Parse(bytes.NewReader([]byte("ONE=1\nTWO='2'\nTHREE = \"3\"")))
-	expectedValues := map[string]string{
-		"ONE":   "1",
-		"TWO":   "2",
-		"THREE": "3",
-	}
-	if err != nil {
-		t.Fatalf("error parsing env: %v", err)
-	}
-	for key, value := range expectedValues {
-		if envMap[key] != value {
-			t.Errorf("expected %s to be %s, got %s", key, value, envMap[key])
-		}
-	}
-}
-
 func TestLoadDoesNotOverride(t *testing.T) {
 	envFileName := "fixtures/plain.env"
 
@@ -136,7 +110,7 @@ func TestLoadDoesNotOverride(t *testing.T) {
 	loadEnvAndCompareValues(t, Load, envFileName, expectedValues, presets)
 }
 
-func TestOverloadDoesOverride(t *testing.T) {
+func TestOveroadDoesOverride(t *testing.T) {
 	envFileName := "fixtures/plain.env"
 
 	// ensure NO overload
@@ -158,7 +132,6 @@ func TestLoadPlainEnv(t *testing.T) {
 		"OPTION_C": "3",
 		"OPTION_D": "4",
 		"OPTION_E": "5",
-		"OPTION_H": "1 2",
 	}
 
 	loadEnvAndCompareValues(t, Load, envFileName, expectedValues, noopPresets)
@@ -168,7 +141,7 @@ func TestLoadExportedEnv(t *testing.T) {
 	envFileName := "fixtures/exported.env"
 	expectedValues := map[string]string{
 		"OPTION_A": "2",
-		"OPTION_B": "\\n",
+		"OPTION_B": "\n",
 	}
 
 	loadEnvAndCompareValues(t, Load, envFileName, expectedValues, noopPresets)
@@ -189,125 +162,16 @@ func TestLoadQuotedEnv(t *testing.T) {
 		"OPTION_A": "1",
 		"OPTION_B": "2",
 		"OPTION_C": "",
-		"OPTION_D": "\\n",
+		"OPTION_D": "\n",
 		"OPTION_E": "1",
 		"OPTION_F": "2",
 		"OPTION_G": "",
 		"OPTION_H": "\n",
-		"OPTION_I": "echo 'asd'",
-		"OPTION_J": "line 1\nline 2",
-		"OPTION_K": "line one\nthis is \\'quoted\\'\none more line",
-		"OPTION_L": "line 1\nline 2",
-		"OPTION_M": "line one\nthis is \"quoted\"\none more line",
 	}
 
 	loadEnvAndCompareValues(t, Load, envFileName, expectedValues, noopPresets)
 }
 
-func TestSubstitutions(t *testing.T) {
-	envFileName := "fixtures/substitutions.env"
-	expectedValues := map[string]string{
-		"OPTION_A": "1",
-		"OPTION_B": "1",
-		"OPTION_C": "1",
-		"OPTION_D": "11",
-		"OPTION_E": "",
-	}
-
-	loadEnvAndCompareValues(t, Load, envFileName, expectedValues, noopPresets)
-}
-
-func TestExpanding(t *testing.T) {
-	tests := []struct {
-		name     string
-		input    string
-		expected map[string]string
-	}{
-		{
-			"expands variables found in values",
-			"FOO=test\nBAR=$FOO",
-			map[string]string{"FOO": "test", "BAR": "test"},
-		},
-		{
-			"parses variables wrapped in brackets",
-			"FOO=test\nBAR=${FOO}bar",
-			map[string]string{"FOO": "test", "BAR": "testbar"},
-		},
-		{
-			"expands undefined variables to an empty string",
-			"BAR=$FOO",
-			map[string]string{"BAR": ""},
-		},
-		{
-			"expands variables in double quoted strings",
-			"FOO=test\nBAR=\"quote $FOO\"",
-			map[string]string{"FOO": "test", "BAR": "quote test"},
-		},
-		{
-			"does not expand variables in single quoted strings",
-			"BAR='quote $FOO'",
-			map[string]string{"BAR": "quote $FOO"},
-		},
-		{
-			"does not expand escaped variables",
-			`FOO="foo\$BAR"`,
-			map[string]string{"FOO": "foo$BAR"},
-		},
-		{
-			"does not expand escaped variables",
-			`FOO="foo\${BAR}"`,
-			map[string]string{"FOO": "foo${BAR}"},
-		},
-		{
-			"does not expand escaped variables",
-			"FOO=test\nBAR=\"foo\\${FOO} ${FOO}\"",
-			map[string]string{"FOO": "test", "BAR": "foo${FOO} test"},
-		},
-	}
-
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			env, _, err := Parse(strings.NewReader(tt.input))
-			if err != nil {
-				t.Errorf("Error: %s", err.Error())
-			}
-			for k, v := range tt.expected {
-				if strings.Compare(env[k], v) != 0 {
-					t.Errorf("Expected: %s, Actual: %s", v, env[k])
-				}
-			}
-		})
-	}
-}
-
-func TestVariableStringValueSeparator(t *testing.T) {
-	input := "TEST_URLS=\"stratum+tcp://stratum.antpool.com:3333\nstratum+tcp://stratum.antpool.com:443\""
-	want := map[string]string{
-		"TEST_URLS": "stratum+tcp://stratum.antpool.com:3333\nstratum+tcp://stratum.antpool.com:443",
-	}
-	got, _, err := Parse(strings.NewReader(input))
-	if err != nil {
-		t.Error(err)
-	}
-
-	if len(got) != len(want) {
-		t.Fatalf(
-			"unexpected value:\nwant:\n\t%#v\n\ngot:\n\t%#v", want, got)
-	}
-
-	for k, wantVal := range want {
-		gotVal, ok := got[k]
-		if !ok {
-			t.Fatalf("key %q doesn't present in result", k)
-		}
-		if wantVal != gotVal {
-			t.Fatalf(
-				"mismatch in %q value:\nwant:\n\t%s\n\ngot:\n\t%s", k,
-				wantVal, gotVal)
-		}
-	}
-}
-
 func TestActualEnvVarsAreLeftAlone(t *testing.T) {
 	os.Clearenv()
 	os.Setenv("OPTION_A", "actualenv")
@@ -335,38 +199,22 @@ func TestParsing(t *testing.T) {
 	// parses escaped double quotes
 	parseAndCompare(t, `FOO="escaped\"bar"`, "FOO", `escaped"bar`)
 
-	// parses single quotes inside double quotes
-	parseAndCompare(t, `FOO="'d'"`, "FOO", `'d'`)
-
 	// parses yaml style options
 	parseAndCompare(t, "OPTION_A: 1", "OPTION_A", "1")
 
-	// parses yaml values with equal signs
-	parseAndCompare(t, "OPTION_A: Foo=bar", "OPTION_A", "Foo=bar")
-
-	// parses non-yaml options with colons
-	parseAndCompare(t, "OPTION_A=1:B", "OPTION_A", "1:B")
-
 	// parses export keyword
 	parseAndCompare(t, "export OPTION_A=2", "OPTION_A", "2")
-	parseAndCompare(t, `export OPTION_B='\n'`, "OPTION_B", "\\n")
+	parseAndCompare(t, `export OPTION_B='\n'`, "OPTION_B", "\n")
-	parseAndCompare(t, "export exportFoo=2", "exportFoo", "2")
-	parseAndCompare(t, "exportFOO=2", "exportFOO", "2")
-	parseAndCompare(t, "export_FOO =2", "export_FOO", "2")
-	parseAndCompare(t, "export.FOO= 2", "export.FOO", "2")
-	parseAndCompare(t, "export\tOPTION_A=2", "OPTION_A", "2")
-	parseAndCompare(t, "  export OPTION_A=2", "OPTION_A", "2")
-	parseAndCompare(t, "\texport OPTION_A=2", "OPTION_A", "2")
 
 	// it 'expands newlines in quoted strings' do
 	// expect(env('FOO="bar\nbaz"')).to eql('FOO' => "bar\nbaz")
 	parseAndCompare(t, `FOO="bar\nbaz"`, "FOO", "bar\nbaz")
 
-	// it 'parses variables with "." in the name' do
+	// it 'parses varibales with "." in the name' do
 	// expect(env('FOO.BAR=foobar')).to eql('FOO.BAR' => 'foobar')
 	parseAndCompare(t, "FOO.BAR=foobar", "FOO.BAR", "foobar")
 
-	// it 'parses variables with several "=" in the value' do
+	// it 'parses varibales with several "=" in the value' do
 	// expect(env('FOO=foobar=')).to eql('FOO' => 'foobar=')
 	parseAndCompare(t, "FOO=foobar=", "FOO", "foobar=")
 
@@ -374,9 +222,6 @@ func TestParsing(t *testing.T) {
 	// expect(env('foo=bar ')).to eql('foo' => 'bar') # not 'bar '
 	parseAndCompare(t, "FOO=bar ", "FOO", "bar")
 
-	// unquoted internal whitespace is preserved
-	parseAndCompare(t, `KEY=value value`, "KEY", "value value")
-
 	// it 'ignores inline comments' do
 	// expect(env("foo=bar # this is foo")).to eql('foo' => 'bar')
 	parseAndCompare(t, "FOO=bar # this is foo", "FOO", "bar")
@@ -393,66 +238,45 @@ func TestParsing(t *testing.T) {
 	parseAndCompare(t, `FOO="ba#r"`, "FOO", "ba#r")
 	parseAndCompare(t, "FOO='ba#r'", "FOO", "ba#r")
 
-	// newlines and backslashes should be escaped
-	parseAndCompare(t, `FOO="bar\n\ b\az"`, "FOO", "bar\n baz")
-	parseAndCompare(t, `FOO="bar\\\n\ b\az"`, "FOO", "bar\\\n baz")
-	parseAndCompare(t, `FOO="bar\\r\ b\az"`, "FOO", "bar\\r baz")
-
-	parseAndCompare(t, `="value"`, "", "value")
-
-	// unquoted whitespace around keys should be ignored
-	parseAndCompare(t, " KEY =value", "KEY", "value")
-	parseAndCompare(t, "   KEY=value", "KEY", "value")
-	parseAndCompare(t, "\tKEY=value", "KEY", "value")
-
 	// it 'throws an error if line format is incorrect' do
 	// expect{env('lol$wut')}.to raise_error(Dotenv::FormatError)
 	badlyFormattedLine := "lol$wut"
-	_, _, err := Unmarshal(badlyFormattedLine)
+	_, _, err := parseLine(badlyFormattedLine)
 	if err == nil {
 		t.Errorf("Expected \"%v\" to return error, but it didn't", badlyFormattedLine)
 	}
 }
 
 func TestLinesToIgnore(t *testing.T) {
-	cases := map[string]struct {
+	// it 'ignores empty lines' do
-		input string
+	// expect(env("\n \t  \nfoo=bar\n \nfizz=buzz")).to eql('foo' => 'bar', 'fizz' => 'buzz')
-		want  string
+	if !isIgnoredLine("\n") {
-	}{
+		t.Error("Line with nothing but line break wasn't ignored")
-		"Line with nothing but line break": {
-			input: "\n",
-		},
-		"Line with nothing but windows-style line break": {
-			input: "\r\n",
-		},
-		"Line full of whitespace": {
-			input: "\t\t ",
-		},
-		"Comment": {
-			input: "# Comment",
-		},
-		"Indented comment": {
-			input: "\t # comment",
-		},
-		"non-ignored value": {
-			input: `export OPTION_B='\n'`,
-			want:  `export OPTION_B='\n'`,
-		},
 	}
 
-	for n, c := range cases {
+	if !isIgnoredLine("\t\t ") {
-		t.Run(n, func(t *testing.T) {
+		t.Error("Line full of whitespace wasn't ignored")
-			got := string(getStatementStart([]byte(c.input)))
+	}
-			if got != c.want {
+
-				t.Errorf("Expected:\t %q\nGot:\t %q", c.want, got)
+	// it 'ignores comment lines' do
-			}
+	// expect(env("\n\n\n # HERE GOES FOO \nfoo=bar")).to eql('foo' => 'bar')
-		})
+	if !isIgnoredLine("# comment") {
+		t.Error("Comment wasn't ignored")
+	}
+
+	if !isIgnoredLine("\t#comment") {
+		t.Error("Indented comment wasn't ignored")
+	}
+
+	// make sure we're not getting false positives
+	if isIgnoredLine(`export OPTION_B='\n'`) {
+		t.Error("ignoring a perfectly valid line to parse")
 	}
 }
 
 func TestErrorReadDirectory(t *testing.T) {
 	envFileName := "fixtures/"
-	envMap, _, err := Read(envFileName)
+	envMap, err := Read(envFileName)
 
 	if err == nil {
 		t.Errorf("Expected error, got %v", envMap)
@@ -461,249 +285,8 @@ func TestErrorReadDirectory(t *testing.T) {
 
 func TestErrorParsing(t *testing.T) {
 	envFileName := "fixtures/invalid1.env"
-	envMap, _, err := Read(envFileName)
+	envMap, err := Read(envFileName)
 	if err == nil {
 		t.Errorf("Expected error, got %v", envMap)
 	}
 }
-
-func TestComments(t *testing.T) {
-	envFileName := "fixtures/comments.env"
-	expectedValues := map[string]string{
-		"foo": "bar",
-		"bar": "foo#baz",
-		"baz": "foo",
-	}
-
-	loadEnvAndCompareValues(t, Load, envFileName, expectedValues, noopPresets)
-}
-
-func TestWrite(t *testing.T) {
-	writeAndCompare := func(env string, expected string) {
-		envMap, _, _ := Unmarshal(env)
-		actual, _ := Marshal(envMap)
-		if expected != actual {
-			t.Errorf("Expected '%v' (%v) to write as '%v', got '%v' instead.", env, envMap, expected, actual)
-		}
-	}
-	// just test some single lines to show the general idea
-	// TestRoundtrip makes most of the good assertions
-
-	// values are always double-quoted
-	writeAndCompare(`key=value`, `key="value"`)
-	// double-quotes are escaped
-	writeAndCompare(`key=va"lu"e`, `key="va\"lu\"e"`)
-	// but single quotes are left alone
-	writeAndCompare(`key=va'lu'e`, `key="va'lu'e"`)
-	// newlines, backslashes, and some other special chars are escaped
-	writeAndCompare(`foo="\n\r\\r!"`, `foo="\n\r\\r\!"`)
-	// lines should be sorted
-	writeAndCompare("foo=bar\nbaz=buzz", "baz=\"buzz\"\nfoo=\"bar\"")
-	// integers should not be quoted
-	writeAndCompare(`key="10"`, `key=10`)
-}
-
-func TestRoundtrip(t *testing.T) {
-	fixtures := []string{"equals.env", "exported.env", "plain.env", "quoted.env"}
-	for _, fixture := range fixtures {
-		fixtureFilename := fmt.Sprintf("fixtures/%s", fixture)
-		env, _, err := readFile(fixtureFilename)
-		if err != nil {
-			t.Errorf("Expected '%s' to read without error (%v)", fixtureFilename, err)
-		}
-		rep, err := Marshal(env)
-		if err != nil {
-			t.Errorf("Expected '%s' to Marshal (%v)", fixtureFilename, err)
-		}
-		roundtripped, _, err := Unmarshal(rep)
-		if err != nil {
-			t.Errorf("Expected '%s' to Mashal and Unmarshal (%v)", fixtureFilename, err)
-		}
-		if !reflect.DeepEqual(env, roundtripped) {
-			t.Errorf("Expected '%s' to roundtrip as '%v', got '%v' instead", fixtureFilename, env, roundtripped)
-		}
-
-	}
-}
-
-func TestTrailingNewlines(t *testing.T) {
-	cases := map[string]struct {
-		input string
-		key   string
-		value string
-	}{
-		"Simple value without trailing newline": {
-			input: "KEY=value",
-			key:   "KEY",
-			value: "value",
-		},
-		"Value with internal whitespace without trailing newline": {
-			input: "KEY=value value",
-			key:   "KEY",
-			value: "value value",
-		},
-		"Value with internal whitespace with trailing newline": {
-			input: "KEY=value value\n",
-			key:   "KEY",
-			value: "value value",
-		},
-		"YAML style - value with internal whitespace without trailing newline": {
-			input: "KEY: value value",
-			key:   "KEY",
-			value: "value value",
-		},
-		"YAML style - value with internal whitespace with trailing newline": {
-			input: "KEY: value value\n",
-			key:   "KEY",
-			value: "value value",
-		},
-	}
-
-	for n, c := range cases {
-		t.Run(n, func(t *testing.T) {
-			result, _, err := Unmarshal(c.input)
-			if err != nil {
-				t.Errorf("Input: %q Unexpected error:\t%q", c.input, err)
-			}
-			if result[c.key] != c.value {
-				t.Errorf("Input %q Expected:\t %q/%q\nGot:\t %q", c.input, c.key, c.value, result)
-			}
-		})
-	}
-}
-
-func TestWhitespace(t *testing.T) {
-	cases := map[string]struct {
-		input string
-		key   string
-		value string
-	}{
-		"Leading whitespace": {
-			input: " A=a\n",
-			key:   "A",
-			value: "a",
-		},
-		"Leading tab": {
-			input: "\tA=a\n",
-			key:   "A",
-			value: "a",
-		},
-		"Leading mixed whitespace": {
-			input: " \t \t\n\t \t A=a\n",
-			key:   "A",
-			value: "a",
-		},
-		"Leading whitespace before export": {
-			input: " \t\t export    A=a\n",
-			key:   "A",
-			value: "a",
-		},
-		"Trailing whitespace": {
-			input: "A=a \t \t\n",
-			key:   "A",
-			value: "a",
-		},
-		"Trailing whitespace with export": {
-			input: "export A=a\t \t \n",
-			key:   "A",
-			value: "a",
-		},
-		"No EOL": {
-			input: "A=a",
-			key:   "A",
-			value: "a",
-		},
-		"Trailing whitespace with no EOL": {
-			input: "A=a ",
-			key:   "A",
-			value: "a",
-		},
-	}
-
-	for n, c := range cases {
-		t.Run(n, func(t *testing.T) {
-			result, _, err := Unmarshal(c.input)
-			if err != nil {
-				t.Errorf("Input: %q Unexpected error:\t%q", c.input, err)
-			}
-			if result[c.key] != c.value {
-				t.Errorf("Input %q Expected:\t %q/%q\nGot:\t %q", c.input, c.key, c.value, result)
-			}
-		})
-	}
-}
-
-func TestModfiers(t *testing.T) {
-	cases := map[string]struct {
-		input     string
-		key       string
-		value     string
-		modifiers map[string]string
-	}{
-		"No Modifier": {
-			input: "A=a",
-			key:   "A",
-			value: "a",
-		},
-		"With comment": {
-			input: "A=a # my comment",
-			key:   "A",
-			value: "a",
-		},
-		"With single modifier": {
-			input: "A=a # foo=bar",
-			key:   "A",
-			value: "a",
-			modifiers: map[string]string{
-				"foo": "bar",
-			},
-		},
-		"With multiple modifiers": {
-			input: "A=a # foo=bar length=10",
-			key:   "A",
-			value: "a",
-			modifiers: map[string]string{
-				"foo":    "bar",
-				"length": "10",
-			},
-		},
-		"With quoted var": {
-			input: "A='a' # foo=bar",
-			key:   "A",
-			value: "a",
-			modifiers: map[string]string{
-				"foo": "bar",
-			},
-		},
-		"With quoted var 2": {
-			input: "A='a' # foo=bar\nB=b",
-			key:   "A",
-			value: "a",
-			modifiers: map[string]string{
-				"foo": "bar",
-			},
-		},
-	}
-
-	for n, c := range cases {
-		t.Run(n, func(t *testing.T) {
-			values, modifiers, err := Unmarshal(c.input)
-			if err != nil {
-				t.Errorf("Input: %q Unexpected error:\t%q", c.input, err)
-			}
-			if values[c.key] != c.value {
-				t.Errorf("Input %q Expected:\t %q/%q\nGot:\t %q", c.input, c.key, c.value, values)
-			}
-
-			if modifiers[c.key] == nil && c.modifiers != nil {
-				t.Errorf("Input %q Expected modifiers\n Got: none", c.input)
-			} else {
-				for k, v := range c.modifiers {
-					if modifiers[c.key][k] != v {
-						t.Errorf("Input %q Expected modifier %s=%s\n Got: %s=%s", c.input, k, v, k, modifiers[c.key][k])
-					}
-				}
-			}
-		})
-	}
-}

parser.go

@@ -1,293 +0,0 @@
-package godotenv
-
-import (
-	"bytes"
-	"errors"
-	"fmt"
-	"regexp"
-	"strings"
-	"unicode"
-)
-
-const (
-	charComment       = '#'
-	prefixSingleQuote = '\''
-	prefixDoubleQuote = '"'
-
-	exportPrefix = "export"
-)
-
-func parseBytes(src []byte, vars map[string]string, modifiers map[string]map[string]string) error {
-	src = bytes.Replace(src, []byte("\r\n"), []byte("\n"), -1)
-	cutset := src
-	for {
-		cutset = getStatementStart(cutset)
-		if cutset == nil {
-			// reached end of file
-			break
-		}
-
-		key, left, err := locateKeyName(cutset)
-		if err != nil {
-			return err
-		}
-
-		value, mods, left, err := extractVarValue(left, vars)
-		if err != nil {
-			return err
-		}
-
-		vars[key] = value
-		modifiers[key] = mods
-		cutset = left
-	}
-
-	return nil
-}
-
-// getStatementPosition returns position of statement begin.
-//
-// It skips any comment line or non-whitespace character.
-func getStatementStart(src []byte) []byte {
-	pos := indexOfNonSpaceChar(src)
-	if pos == -1 {
-		return nil
-	}
-
-	src = src[pos:]
-	if src[0] != charComment {
-		return src
-	}
-
-	// skip comment section
-	pos = bytes.IndexFunc(src, isCharFunc('\n'))
-	if pos == -1 {
-		return nil
-	}
-
-	return getStatementStart(src[pos:])
-}
-
-// locateKeyName locates and parses key name and returns rest of slice
-func locateKeyName(src []byte) (key string, cutset []byte, err error) {
-	// trim "export" and space at beginning
-	src = bytes.TrimLeftFunc(src, isSpace)
-	if bytes.HasPrefix(src, []byte(exportPrefix)) {
-		trimmed := bytes.TrimPrefix(src, []byte(exportPrefix))
-		if bytes.IndexFunc(trimmed, isSpace) == 0 {
-			src = bytes.TrimLeftFunc(trimmed, isSpace)
-		}
-	}
-
-	// locate key name end and validate it in single loop
-	offset := 0
-loop:
-	for i, char := range src {
-		rchar := rune(char)
-		if isSpace(rchar) {
-			continue
-		}
-
-		switch char {
-		case '=', ':':
-			// library also supports yaml-style value declaration
-			key = string(src[0:i])
-			offset = i + 1
-			break loop
-		case '_':
-		default:
-			// variable name should match [A-Za-z0-9_.]
-			if unicode.IsLetter(rchar) || unicode.IsNumber(rchar) || rchar == '.' {
-				continue
-			}
-
-			return "", nil, fmt.Errorf(
-				`unexpected character %q in variable name near %q`,
-				string(char), string(src))
-		}
-	}
-
-	if len(src) == 0 {
-		return "", nil, errors.New("zero length string")
-	}
-
-	// trim whitespace
-	key = strings.TrimRightFunc(key, unicode.IsSpace)
-	cutset = bytes.TrimLeftFunc(src[offset:], isSpace)
-	return key, cutset, nil
-}
-
-// extractVarValue extracts variable value and returns rest of slice
-func extractVarValue(src []byte, vars map[string]string) (value string, modifiers map[string]string, rest []byte, err error) {
-	quote, hasPrefix := hasQuotePrefix(src)
-	// unquoted value - read until end of line
-	endOfLine := bytes.IndexFunc(src, isLineEnd)
-	// Hit EOF without a trailing newline
-	if endOfLine == -1 {
-		endOfLine = len(src)
-
-		if endOfLine == 0 {
-			return "", nil, nil, nil
-		}
-	}
-	if !hasPrefix {
-		// Convert line to rune away to do accurate countback of runes
-		line := []rune(string(src[0:endOfLine]))
-
-		// Assume end of line is end of var
-		endOfVar := len(line)
-		if endOfVar == 0 {
-			return "", nil, src[endOfLine:], nil
-		}
-
-		comment := ""
-		// Work backwards to check if the line ends in whitespace then
-		// a comment (ie asdasd # some comment)
-		for i := endOfVar - 1; i >= 0; i-- {
-			if line[i] == charComment && i > 0 {
-				comment = string(line[i+1:])
-				if isSpace(line[i-1]) {
-					endOfVar = i
-					break
-				}
-			}
-		}
-
-		trimmed := strings.TrimFunc(string(line[0:endOfVar]), isSpace)
-
-		return expandVariables(trimmed, vars), extractModifiers(comment), src[endOfLine:], nil
-	}
-
-	// lookup quoted string terminator
-	for i := 1; i < len(src); i++ {
-		if char := src[i]; char != quote {
-			continue
-		}
-
-		// skip escaped quote symbol (\" or \', depends on quote)
-		if prevChar := src[i-1]; prevChar == '\\' {
-			continue
-		}
-
-		// trim quotes
-		trimFunc := isCharFunc(rune(quote))
-		value = string(bytes.TrimLeftFunc(bytes.TrimRightFunc(src[0:i], trimFunc), trimFunc))
-		if quote == prefixDoubleQuote {
-			// unescape newlines for double quote (this is compat feature)
-			// and expand environment variables
-			value = expandVariables(expandEscapes(value), vars)
-		}
-
-		var mods map[string]string
-		if endOfLine > i {
-			mods = extractModifiers(string(src[i+1 : endOfLine]))
-		}
-		return value, mods, src[i+1:], nil
-	}
-
-	// return formatted error if quoted string is not terminated
-	valEndIndex := bytes.IndexFunc(src, isCharFunc('\n'))
-	if valEndIndex == -1 {
-		valEndIndex = len(src)
-	}
-
-	return "", nil, nil, fmt.Errorf("unterminated quoted value %s", src[:valEndIndex])
-}
-
-func extractModifiers(comment string) map[string]string {
-	if comment == "" {
-		return nil
-	}
-	comment = strings.TrimSpace(comment)
-	kvpairs := strings.Split(comment, " ")
-	mods := make(map[string]string)
-	for _, kv := range kvpairs {
-		kvsplit := strings.Split(kv, "=")
-		if len(kvsplit) != 2 {
-			continue
-		}
-		mods[kvsplit[0]] = kvsplit[1]
-	}
-	return mods
-}
-
-func expandEscapes(str string) string {
-	out := escapeRegex.ReplaceAllStringFunc(str, func(match string) string {
-		c := strings.TrimPrefix(match, `\`)
-		switch c {
-		case "n":
-			return "\n"
-		case "r":
-			return "\r"
-		default:
-			return match
-		}
-	})
-	return unescapeCharsRegex.ReplaceAllString(out, "$1")
-}
-
-func indexOfNonSpaceChar(src []byte) int {
-	return bytes.IndexFunc(src, func(r rune) bool {
-		return !unicode.IsSpace(r)
-	})
-}
-
-// hasQuotePrefix reports whether charset starts with single or double quote and returns quote character
-func hasQuotePrefix(src []byte) (prefix byte, isQuored bool) {
-	if len(src) == 0 {
-		return 0, false
-	}
-
-	switch prefix := src[0]; prefix {
-	case prefixDoubleQuote, prefixSingleQuote:
-		return prefix, true
-	default:
-		return 0, false
-	}
-}
-
-func isCharFunc(char rune) func(rune) bool {
-	return func(v rune) bool {
-		return v == char
-	}
-}
-
-// isSpace reports whether the rune is a space character but not line break character
-//
-// this differs from unicode.IsSpace, which also applies line break as space
-func isSpace(r rune) bool {
-	switch r {
-	case '\t', '\v', '\f', '\r', ' ', 0x85, 0xA0:
-		return true
-	}
-	return false
-}
-
-func isLineEnd(r rune) bool {
-	if r == '\n' || r == '\r' {
-		return true
-	}
-	return false
-}
-
-var (
-	escapeRegex        = regexp.MustCompile(`\\.`)
-	expandVarRegex     = regexp.MustCompile(`(\\)?(\$)(\()?\{?([A-Z0-9_]+)?\}?`)
-	unescapeCharsRegex = regexp.MustCompile(`\\([^$])`)
-)
-
-func expandVariables(v string, m map[string]string) string {
-	return expandVarRegex.ReplaceAllStringFunc(v, func(s string) string {
-		submatch := expandVarRegex.FindStringSubmatch(s)
-
-		if submatch == nil {
-			return s
-		}
-		if submatch[1] == "\\" || submatch[2] == "(" {
-			return submatch[0][1:]
-		} else if submatch[4] != "" {
-			return m[submatch[4]]
-		}
-		return s
-	})
-}