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ferret/pkg/stdlib/strings/encode.go
Tim Voronov e6d692010c stdlib.strings
Added string functions to standard library
2018-09-21 20:37:09 -04:00

102 lines
2.5 KiB
Go

package strings
import (
"context"
"crypto/md5"
"crypto/sha1"
"crypto/sha512"
"encoding/base64"
"github.com/MontFerret/ferret/pkg/runtime/core"
"github.com/MontFerret/ferret/pkg/runtime/values"
"net/url"
)
/*
* Returns the encoded String of uri.
* @param (String) - Uri to encode.
* @returns String - Encoded string.
*/
func EncodeURIComponent(_ context.Context, args ...core.Value) (core.Value, error) {
err := core.ValidateArgs(args, 1, 1)
if err != nil {
return values.EmptyString, err
}
str := url.QueryEscape(args[0].String())
return values.NewString(str), nil
}
/*
* Calculates the MD5 checksum for text and return it in a hexadecimal string representation.
* @param text (String) - The string to do calculations against to.
* @return (String) - MD5 checksum as hex string.
*/
func Md5(_ context.Context, args ...core.Value) (core.Value, error) {
err := core.ValidateArgs(args, 1, 1)
if err != nil {
return values.EmptyString, err
}
text := args[0].String()
res := md5.Sum([]byte(text))
return values.NewString(string(res[:])), nil
}
/*
* Calculates the SHA1 checksum for text and returns it in a hexadecimal string representation.
* @param text (String) - The string to do calculations against to.
* @return (String) - Sha1 checksum as hex string.
*/
func Sha1(_ context.Context, args ...core.Value) (core.Value, error) {
err := core.ValidateArgs(args, 1, 1)
if err != nil {
return values.EmptyString, err
}
text := args[0].String()
res := sha1.Sum([]byte(text))
return values.NewString(string(res[:])), nil
}
/*
* Calculates the SHA512 checksum for text and returns it in a hexadecimal string representation.
* @param text (String) - The string to do calculations against to.
* @return (String) - SHA512 checksum as hex string.
*/
func Sha512(_ context.Context, args ...core.Value) (core.Value, error) {
err := core.ValidateArgs(args, 1, 1)
if err != nil {
return values.EmptyString, err
}
text := args[0].String()
res := sha512.Sum512([]byte(text))
return values.NewString(string(res[:])), nil
}
/*
* Returns the base64 representation of value.
* @param value (string) - The string to encode.
* @returns toBase64String (String) - A base64 representation of the string.
*/
func ToBase64(_ context.Context, args ...core.Value) (core.Value, error) {
err := core.ValidateArgs(args, 1, 1)
if err != nil {
return values.EmptyString, err
}
value := args[0].String()
out := base64.StdEncoding.EncodeToString([]byte(value))
return values.NewString(string(out)), nil
}