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utf support for string

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This commit is contained in:
Hayden Parker
2016-02-05 22:00:47 -08:00
parent b3fa7082cf
commit ef6cb2362c
4 changed files with 70 additions and 64 deletions
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22
lib/common/string.go
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@ -4,14 +4,14 @@ import (
"errors"
)
type String []byte
type String []rune
func (str String) Length() (int, error) {
if len(str) == 0 {
// log
return 0, errors.New("error parsing string: zero length")
}
length := Integer([]byte{str[0]})
length := Integer([]byte{byte(str[0])})
inferred_len := length + 1
str_len := len(str)
if inferred_len > str_len {
@ -24,12 +24,12 @@ func (str String) Length() (int, error) {
return length, nil
}
func (str String) Data() ([]byte, error) {
func (str String) Data() ([]rune, error) {
length, err := str.Length()
if err != nil {
switch err.Error() {
case "error parsing string: zero length":
return make([]byte, 0), err
return make([]rune, 0), err
case "string parsing warning: string data is shorter than specified by length":
return str[1:], err
case "string parsing warning: string contains data beyond length":
@ -44,28 +44,28 @@ func (str String) GoString() (string, error) {
return string(content), err
}
func ToI2PString(data []byte) (String, error) {
func ToI2PString(data []rune) (String, error) {
data_len := len(data)
if data_len >= 256 {
return make([]byte, 0), errors.New("cannot store that much data in I2P string")
return make([]rune, 0), errors.New("cannot store that much data in I2P string")
}
i2p_string := []byte{byte(data_len)}
i2p_string := []rune{rune(data_len)}
i2p_string = append(i2p_string, data...)
return String(i2p_string), nil
}
func ReadString(data []byte) (String, []byte, error) {
func ReadString(data []rune) (String, []rune, error) {
str := String(data)
length, err := String(data).Length()
if err != nil {
switch err.Error() {
case "error parsing string: zero length":
return String{}, make([]byte, 0), err
return String{}, make([]rune, 0), err
case "string parsing warning: string data is shorter than specified by length":
return str, make([]byte, 0), err
return str, make([]rune, 0), err
case "string parsing warning: string contains data beyond length":
return String(str[:length+1]), str[length+1:], err
}
}
return str, make([]byte, 0), nil
return str, make([]rune, 0), nil
}