501 lines
14 KiB
Go
501 lines
14 KiB
Go
package otto
|
|
|
|
import (
|
|
"bytes"
|
|
"regexp"
|
|
"strconv"
|
|
"strings"
|
|
"unicode/utf8"
|
|
)
|
|
|
|
// String
|
|
|
|
func stringValueFromStringArgumentList(argumentList []Value) Value {
|
|
if len(argumentList) > 0 {
|
|
return toValue_string(argumentList[0].string())
|
|
}
|
|
return toValue_string("")
|
|
}
|
|
|
|
func builtinString(call FunctionCall) Value {
|
|
return stringValueFromStringArgumentList(call.ArgumentList)
|
|
}
|
|
|
|
func builtinNewString(self *_object, argumentList []Value) Value {
|
|
return toValue_object(self.runtime.newString(stringValueFromStringArgumentList(argumentList)))
|
|
}
|
|
|
|
func builtinString_toString(call FunctionCall) Value {
|
|
return call.thisClassObject("String").primitiveValue()
|
|
}
|
|
func builtinString_valueOf(call FunctionCall) Value {
|
|
return call.thisClassObject("String").primitiveValue()
|
|
}
|
|
|
|
func builtinString_fromCharCode(call FunctionCall) Value {
|
|
chrList := make([]uint16, len(call.ArgumentList))
|
|
for index, value := range call.ArgumentList {
|
|
chrList[index] = toUint16(value)
|
|
}
|
|
return toValue_string16(chrList)
|
|
}
|
|
|
|
func builtinString_charAt(call FunctionCall) Value {
|
|
checkObjectCoercible(call.runtime, call.This)
|
|
idx := int(call.Argument(0).number().int64)
|
|
chr := stringAt(call.This._object().stringValue(), idx)
|
|
if chr == utf8.RuneError {
|
|
return toValue_string("")
|
|
}
|
|
return toValue_string(string(chr))
|
|
}
|
|
|
|
func builtinString_charCodeAt(call FunctionCall) Value {
|
|
checkObjectCoercible(call.runtime, call.This)
|
|
idx := int(call.Argument(0).number().int64)
|
|
chr := stringAt(call.This._object().stringValue(), idx)
|
|
if chr == utf8.RuneError {
|
|
return NaNValue()
|
|
}
|
|
return toValue_uint16(uint16(chr))
|
|
}
|
|
|
|
func builtinString_concat(call FunctionCall) Value {
|
|
checkObjectCoercible(call.runtime, call.This)
|
|
var value bytes.Buffer
|
|
value.WriteString(call.This.string())
|
|
for _, item := range call.ArgumentList {
|
|
value.WriteString(item.string())
|
|
}
|
|
return toValue_string(value.String())
|
|
}
|
|
|
|
func builtinString_indexOf(call FunctionCall) Value {
|
|
checkObjectCoercible(call.runtime, call.This)
|
|
value := call.This.string()
|
|
target := call.Argument(0).string()
|
|
if 2 > len(call.ArgumentList) {
|
|
return toValue_int(strings.Index(value, target))
|
|
}
|
|
start := toIntegerFloat(call.Argument(1))
|
|
if 0 > start {
|
|
start = 0
|
|
} else if start >= float64(len(value)) {
|
|
if target == "" {
|
|
return toValue_int(len(value))
|
|
}
|
|
return toValue_int(-1)
|
|
}
|
|
index := strings.Index(value[int(start):], target)
|
|
if index >= 0 {
|
|
index += int(start)
|
|
}
|
|
return toValue_int(index)
|
|
}
|
|
|
|
func builtinString_lastIndexOf(call FunctionCall) Value {
|
|
checkObjectCoercible(call.runtime, call.This)
|
|
value := call.This.string()
|
|
target := call.Argument(0).string()
|
|
if 2 > len(call.ArgumentList) || call.ArgumentList[1].IsUndefined() {
|
|
return toValue_int(strings.LastIndex(value, target))
|
|
}
|
|
length := len(value)
|
|
if length == 0 {
|
|
return toValue_int(strings.LastIndex(value, target))
|
|
}
|
|
start := call.ArgumentList[1].number()
|
|
if start.kind == numberInfinity { // FIXME
|
|
// startNumber is infinity, so start is the end of string (start = length)
|
|
return toValue_int(strings.LastIndex(value, target))
|
|
}
|
|
if 0 > start.int64 {
|
|
start.int64 = 0
|
|
}
|
|
end := int(start.int64) + len(target)
|
|
if end > length {
|
|
end = length
|
|
}
|
|
return toValue_int(strings.LastIndex(value[:end], target))
|
|
}
|
|
|
|
func builtinString_match(call FunctionCall) Value {
|
|
checkObjectCoercible(call.runtime, call.This)
|
|
target := call.This.string()
|
|
matcherValue := call.Argument(0)
|
|
matcher := matcherValue._object()
|
|
if !matcherValue.IsObject() || matcher.class != "RegExp" {
|
|
matcher = call.runtime.newRegExp(matcherValue, Value{})
|
|
}
|
|
global := matcher.get("global").bool()
|
|
if !global {
|
|
match, result := execRegExp(matcher, target)
|
|
if !match {
|
|
return nullValue
|
|
}
|
|
return toValue_object(execResultToArray(call.runtime, target, result))
|
|
}
|
|
|
|
{
|
|
result := matcher.regExpValue().regularExpression.FindAllStringIndex(target, -1)
|
|
matchCount := len(result)
|
|
if result == nil {
|
|
matcher.put("lastIndex", toValue_int(0), true)
|
|
return Value{} // !match
|
|
}
|
|
matchCount = len(result)
|
|
valueArray := make([]Value, matchCount)
|
|
for index := 0; index < matchCount; index++ {
|
|
valueArray[index] = toValue_string(target[result[index][0]:result[index][1]])
|
|
}
|
|
matcher.put("lastIndex", toValue_int(result[matchCount-1][1]), true)
|
|
return toValue_object(call.runtime.newArrayOf(valueArray))
|
|
}
|
|
}
|
|
|
|
var builtinString_replace_Regexp = regexp.MustCompile("\\$(?:[\\$\\&\\'\\`1-9]|0[1-9]|[1-9][0-9])")
|
|
|
|
func builtinString_findAndReplaceString(input []byte, lastIndex int, match []int, target []byte, replaceValue []byte) (output []byte) {
|
|
matchCount := len(match) / 2
|
|
output = input
|
|
if match[0] != lastIndex {
|
|
output = append(output, target[lastIndex:match[0]]...)
|
|
}
|
|
replacement := builtinString_replace_Regexp.ReplaceAllFunc(replaceValue, func(part []byte) []byte {
|
|
// TODO Check if match[0] or match[1] can be -1 in this scenario
|
|
switch part[1] {
|
|
case '$':
|
|
return []byte{'$'}
|
|
case '&':
|
|
return target[match[0]:match[1]]
|
|
case '`':
|
|
return target[:match[0]]
|
|
case '\'':
|
|
return target[match[1]:len(target)]
|
|
}
|
|
matchNumberParse, error := strconv.ParseInt(string(part[1:]), 10, 64)
|
|
matchNumber := int(matchNumberParse)
|
|
if error != nil || matchNumber >= matchCount {
|
|
return []byte{}
|
|
}
|
|
offset := 2 * matchNumber
|
|
if match[offset] != -1 {
|
|
return target[match[offset]:match[offset+1]]
|
|
}
|
|
return []byte{} // The empty string
|
|
})
|
|
output = append(output, replacement...)
|
|
return output
|
|
}
|
|
|
|
func builtinString_replace(call FunctionCall) Value {
|
|
checkObjectCoercible(call.runtime, call.This)
|
|
target := []byte(call.This.string())
|
|
searchValue := call.Argument(0)
|
|
searchObject := searchValue._object()
|
|
|
|
// TODO If a capture is -1?
|
|
var search *regexp.Regexp
|
|
global := false
|
|
find := 1
|
|
if searchValue.IsObject() && searchObject.class == "RegExp" {
|
|
regExp := searchObject.regExpValue()
|
|
search = regExp.regularExpression
|
|
if regExp.global {
|
|
find = -1
|
|
}
|
|
} else {
|
|
search = regexp.MustCompile(regexp.QuoteMeta(searchValue.string()))
|
|
}
|
|
|
|
found := search.FindAllSubmatchIndex(target, find)
|
|
if found == nil {
|
|
return toValue_string(string(target)) // !match
|
|
}
|
|
|
|
{
|
|
lastIndex := 0
|
|
result := []byte{}
|
|
|
|
replaceValue := call.Argument(1)
|
|
if replaceValue.isCallable() {
|
|
target := string(target)
|
|
replace := replaceValue._object()
|
|
for _, match := range found {
|
|
if match[0] != lastIndex {
|
|
result = append(result, target[lastIndex:match[0]]...)
|
|
}
|
|
matchCount := len(match) / 2
|
|
argumentList := make([]Value, matchCount+2)
|
|
for index := 0; index < matchCount; index++ {
|
|
offset := 2 * index
|
|
if match[offset] != -1 {
|
|
argumentList[index] = toValue_string(target[match[offset]:match[offset+1]])
|
|
} else {
|
|
argumentList[index] = Value{}
|
|
}
|
|
}
|
|
argumentList[matchCount+0] = toValue_int(match[0])
|
|
argumentList[matchCount+1] = toValue_string(target)
|
|
replacement := replace.call(Value{}, argumentList, false, nativeFrame).string()
|
|
result = append(result, []byte(replacement)...)
|
|
lastIndex = match[1]
|
|
}
|
|
|
|
} else {
|
|
replace := []byte(replaceValue.string())
|
|
for _, match := range found {
|
|
result = builtinString_findAndReplaceString(result, lastIndex, match, target, replace)
|
|
lastIndex = match[1]
|
|
}
|
|
}
|
|
|
|
if lastIndex != len(target) {
|
|
result = append(result, target[lastIndex:]...)
|
|
}
|
|
|
|
if global && searchObject != nil {
|
|
searchObject.put("lastIndex", toValue_int(lastIndex), true)
|
|
}
|
|
|
|
return toValue_string(string(result))
|
|
}
|
|
}
|
|
|
|
func builtinString_search(call FunctionCall) Value {
|
|
checkObjectCoercible(call.runtime, call.This)
|
|
target := call.This.string()
|
|
searchValue := call.Argument(0)
|
|
search := searchValue._object()
|
|
if !searchValue.IsObject() || search.class != "RegExp" {
|
|
search = call.runtime.newRegExp(searchValue, Value{})
|
|
}
|
|
result := search.regExpValue().regularExpression.FindStringIndex(target)
|
|
if result == nil {
|
|
return toValue_int(-1)
|
|
}
|
|
return toValue_int(result[0])
|
|
}
|
|
|
|
func stringSplitMatch(target string, targetLength int64, index uint, search string, searchLength int64) (bool, uint) {
|
|
if int64(index)+searchLength > searchLength {
|
|
return false, 0
|
|
}
|
|
found := strings.Index(target[index:], search)
|
|
if 0 > found {
|
|
return false, 0
|
|
}
|
|
return true, uint(found)
|
|
}
|
|
|
|
func builtinString_split(call FunctionCall) Value {
|
|
checkObjectCoercible(call.runtime, call.This)
|
|
target := call.This.string()
|
|
|
|
separatorValue := call.Argument(0)
|
|
limitValue := call.Argument(1)
|
|
limit := -1
|
|
if limitValue.IsDefined() {
|
|
limit = int(toUint32(limitValue))
|
|
}
|
|
|
|
if limit == 0 {
|
|
return toValue_object(call.runtime.newArray(0))
|
|
}
|
|
|
|
if separatorValue.IsUndefined() {
|
|
return toValue_object(call.runtime.newArrayOf([]Value{toValue_string(target)}))
|
|
}
|
|
|
|
if separatorValue.isRegExp() {
|
|
targetLength := len(target)
|
|
search := separatorValue._object().regExpValue().regularExpression
|
|
valueArray := []Value{}
|
|
result := search.FindAllStringSubmatchIndex(target, -1)
|
|
lastIndex := 0
|
|
found := 0
|
|
|
|
for _, match := range result {
|
|
if match[0] == match[1] {
|
|
// FIXME Ugh, this is a hack
|
|
if match[0] == 0 || match[0] == targetLength {
|
|
continue
|
|
}
|
|
}
|
|
|
|
if lastIndex != match[0] {
|
|
valueArray = append(valueArray, toValue_string(target[lastIndex:match[0]]))
|
|
found++
|
|
} else if lastIndex == match[0] {
|
|
if lastIndex != -1 {
|
|
valueArray = append(valueArray, toValue_string(""))
|
|
found++
|
|
}
|
|
}
|
|
|
|
lastIndex = match[1]
|
|
if found == limit {
|
|
goto RETURN
|
|
}
|
|
|
|
captureCount := len(match) / 2
|
|
for index := 1; index < captureCount; index++ {
|
|
offset := index * 2
|
|
value := Value{}
|
|
if match[offset] != -1 {
|
|
value = toValue_string(target[match[offset]:match[offset+1]])
|
|
}
|
|
valueArray = append(valueArray, value)
|
|
found++
|
|
if found == limit {
|
|
goto RETURN
|
|
}
|
|
}
|
|
}
|
|
|
|
if found != limit {
|
|
if lastIndex != targetLength {
|
|
valueArray = append(valueArray, toValue_string(target[lastIndex:targetLength]))
|
|
} else {
|
|
valueArray = append(valueArray, toValue_string(""))
|
|
}
|
|
}
|
|
|
|
RETURN:
|
|
return toValue_object(call.runtime.newArrayOf(valueArray))
|
|
|
|
} else {
|
|
separator := separatorValue.string()
|
|
|
|
splitLimit := limit
|
|
excess := false
|
|
if limit > 0 {
|
|
splitLimit = limit + 1
|
|
excess = true
|
|
}
|
|
|
|
split := strings.SplitN(target, separator, splitLimit)
|
|
|
|
if excess && len(split) > limit {
|
|
split = split[:limit]
|
|
}
|
|
|
|
valueArray := make([]Value, len(split))
|
|
for index, value := range split {
|
|
valueArray[index] = toValue_string(value)
|
|
}
|
|
|
|
return toValue_object(call.runtime.newArrayOf(valueArray))
|
|
}
|
|
}
|
|
|
|
func builtinString_slice(call FunctionCall) Value {
|
|
checkObjectCoercible(call.runtime, call.This)
|
|
target := call.This.string()
|
|
|
|
length := int64(len(target))
|
|
start, end := rangeStartEnd(call.ArgumentList, length, false)
|
|
if end-start <= 0 {
|
|
return toValue_string("")
|
|
}
|
|
return toValue_string(target[start:end])
|
|
}
|
|
|
|
func builtinString_substring(call FunctionCall) Value {
|
|
checkObjectCoercible(call.runtime, call.This)
|
|
target := call.This.string()
|
|
|
|
length := int64(len(target))
|
|
start, end := rangeStartEnd(call.ArgumentList, length, true)
|
|
if start > end {
|
|
start, end = end, start
|
|
}
|
|
return toValue_string(target[start:end])
|
|
}
|
|
|
|
func builtinString_substr(call FunctionCall) Value {
|
|
target := call.This.string()
|
|
|
|
size := int64(len(target))
|
|
start, length := rangeStartLength(call.ArgumentList, size)
|
|
|
|
if start >= size {
|
|
return toValue_string("")
|
|
}
|
|
|
|
if length <= 0 {
|
|
return toValue_string("")
|
|
}
|
|
|
|
if start+length >= size {
|
|
// Cap length to be to the end of the string
|
|
// start = 3, length = 5, size = 4 [0, 1, 2, 3]
|
|
// 4 - 3 = 1
|
|
// target[3:4]
|
|
length = size - start
|
|
}
|
|
|
|
return toValue_string(target[start : start+length])
|
|
}
|
|
|
|
func builtinString_toLowerCase(call FunctionCall) Value {
|
|
checkObjectCoercible(call.runtime, call.This)
|
|
return toValue_string(strings.ToLower(call.This.string()))
|
|
}
|
|
|
|
func builtinString_toUpperCase(call FunctionCall) Value {
|
|
checkObjectCoercible(call.runtime, call.This)
|
|
return toValue_string(strings.ToUpper(call.This.string()))
|
|
}
|
|
|
|
// 7.2 Table 2 — Whitespace Characters & 7.3 Table 3 - Line Terminator Characters
|
|
const builtinString_trim_whitespace = "\u0009\u000A\u000B\u000C\u000D\u0020\u00A0\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u2028\u2029\u202F\u205F\u3000\uFEFF"
|
|
|
|
func builtinString_trim(call FunctionCall) Value {
|
|
checkObjectCoercible(call.runtime, call.This)
|
|
return toValue(strings.Trim(call.This.string(),
|
|
builtinString_trim_whitespace))
|
|
}
|
|
|
|
// Mozilla extension, not ECMAScript 5
|
|
func builtinString_trimLeft(call FunctionCall) Value {
|
|
checkObjectCoercible(call.runtime, call.This)
|
|
return toValue(strings.TrimLeft(call.This.string(),
|
|
builtinString_trim_whitespace))
|
|
}
|
|
|
|
// Mozilla extension, not ECMAScript 5
|
|
func builtinString_trimRight(call FunctionCall) Value {
|
|
checkObjectCoercible(call.runtime, call.This)
|
|
return toValue(strings.TrimRight(call.This.string(),
|
|
builtinString_trim_whitespace))
|
|
}
|
|
|
|
func builtinString_localeCompare(call FunctionCall) Value {
|
|
checkObjectCoercible(call.runtime, call.This)
|
|
this := call.This.string()
|
|
that := call.Argument(0).string()
|
|
if this < that {
|
|
return toValue_int(-1)
|
|
} else if this == that {
|
|
return toValue_int(0)
|
|
}
|
|
return toValue_int(1)
|
|
}
|
|
|
|
/*
|
|
An alternate version of String.trim
|
|
func builtinString_trim(call FunctionCall) Value {
|
|
checkObjectCoercible(call.This)
|
|
return toValue_string(strings.TrimFunc(call.string(.This), isWhiteSpaceOrLineTerminator))
|
|
}
|
|
*/
|
|
|
|
func builtinString_toLocaleLowerCase(call FunctionCall) Value {
|
|
return builtinString_toLowerCase(call)
|
|
}
|
|
|
|
func builtinString_toLocaleUpperCase(call FunctionCall) Value {
|
|
return builtinString_toUpperCase(call)
|
|
}
|