stdlib.strings

Added string functions to standard library

pkg/stdlib/strings/encode.go

@@ -0,0 +1,101 @@
+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
+}