envexp: drop package in favour of asciigoat.org/parsers/shexp

Signed-off-by: Alejandro Mery <[email protected]>

envexp/expand.go

@@ -1,39 +0,0 @@
-// Package envexp provides environment variable expansion using sh syntax
-package envexp
-
-import (
-	"os"
-)
-
-// A VarGetter is a function that for a given paramenter
-// returns a string representing its value
-type VarGetter func(key string) string
-
-// A Expander is an object that you can use to Expand strings
-type Expander struct {
-	get VarGetter
-}
-
-// NewExpander allocates a new Expander using a
-// given VarGetter, or os.Getenv if none is given
-func NewExpander(f VarGetter) *Expander {
-	if f == nil {
-		f = os.Getenv
-	}
-
-	return &Expander{
-		get: f,
-	}
-}
-
-// Get resolves a variable name as the given Expander
-// would do
-func (exp *Expander) Get(key string) string {
-	return exp.get(key)
-}
-
-// Expand expands a string using the VarGetter
-// defined for the given Expander
-func (exp *Expander) Expand(s string) string {
-	return s
-}

envexp/global.go

@@ -1,39 +0,0 @@
-package envexp
-
-import (
-	"io"
-	"os"
-)
-
-var envExpander = &Expander{
-	get: os.Getenv,
-}
-
-// Expand uses os.GetEnv() to expand a given string
-func Expand(s string) string {
-	return envExpander.Expand(s)
-}
-
-// NewReaderSize creates a new Reader wrapper with a given buffer size
-// using os.GetEnv() for expanding
-func NewReaderSize(in io.Reader, size int) *Reader {
-	return envExpander.NewReaderSize(in, size)
-}
-
-// NewReader creates a new Reader wrapper
-// using os.GetEnv() for expanding
-func NewReader(in io.Reader) *Reader {
-	return envExpander.NewReader(in)
-}
-
-// NewReaderFileSize creates a new Reader for a file
-// with a given buffer size using os.GetEnv() for expanding
-func NewReaderFileSize(filename string, size int) (*Reader, error) {
-	return envExpander.NewReaderFileSize(filename, size)
-}
-
-// NewReaderFile creates a new Reader for a file
-// using os.GetEnv() for expanding
-func NewReaderFile(filename string) (*Reader, error) {
-	return envExpander.NewReaderFile(filename)
-}

envexp/reader.go

@@ -1,64 +0,0 @@
-package envexp
-
-import (
-	"bytes"
-	"io"
-	"os"
-)
-
-const (
-	MinimumBufferSize = 32
-	DefaultBufferSize = 4096
-)
-
-type Reader struct {
-	exp *Expander
-	in  io.Reader
-	buf *bytes.Buffer
-	out *bytes.Buffer
-}
-
-func (rd *Reader) Read(b []byte) (int, error) {
-	return rd.in.Read(b)
-}
-
-func (rd *Reader) Close() error {
-	if f, ok := rd.in.(io.Closer); ok {
-		return f.Close()
-	}
-	return nil
-}
-
-//
-// Constructors
-//
-func (exp *Expander) NewReaderSize(in io.Reader, size int) *Reader {
-	if size < MinimumBufferSize {
-		size = DefaultBufferSize
-	}
-
-	return &Reader{
-		exp: exp,
-		in:  in,
-		buf: bytes.NewBuffer(make([]byte, 0, size)),
-		out: bytes.NewBuffer(make([]byte, 0, size)),
-	}
-}
-
-func (exp *Expander) NewReader(in io.Reader) *Reader {
-	return exp.NewReaderSize(in, DefaultBufferSize)
-}
-
-func (exp *Expander) NewReaderFileSize(filename string, size int) (*Reader, error) {
-	f, err := os.Open(filename)
-	if err != nil {
-		return nil, err
-	}
-
-	rd := exp.NewReaderSize(f, size)
-	return rd, nil
-}
-
-func (exp *Expander) NewReaderFile(filename string) (*Reader, error) {
-	return exp.NewReaderFileSize(filename, DefaultBufferSize)
-}