Lantao Liu
396
vendor/github.com/json-iterator/go/feature_stream_string.go
generated
vendored
Normal file
396
vendor/github.com/json-iterator/go/feature_stream_string.go
generated
vendored
Normal file
@@ -0,0 +1,396 @@
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||||
package jsoniter
|
||||
|
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import (
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"unicode/utf8"
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)
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||||
// htmlSafeSet holds the value true if the ASCII character with the given
|
||||
// array position can be safely represented inside a JSON string, embedded
|
||||
// inside of HTML <script> tags, without any additional escaping.
|
||||
//
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// All values are true except for the ASCII control characters (0-31), the
|
||||
// double quote ("), the backslash character ("\"), HTML opening and closing
|
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// tags ("<" and ">"), and the ampersand ("&").
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var htmlSafeSet = [utf8.RuneSelf]bool{
|
||||
' ': true,
|
||||
'!': true,
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'"': false,
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'#': true,
|
||||
'$': true,
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'%': true,
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'&': false,
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'\'': true,
|
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'(': true,
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')': true,
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'*': true,
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'+': true,
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',': true,
|
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'-': true,
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'.': true,
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'/': true,
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'0': true,
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'1': true,
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'2': true,
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'3': true,
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'4': true,
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'5': true,
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||||
'6': true,
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'7': true,
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||||
'8': true,
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||||
'9': true,
|
||||
':': true,
|
||||
';': true,
|
||||
'<': false,
|
||||
'=': true,
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'>': false,
|
||||
'?': true,
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'@': true,
|
||||
'A': true,
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'B': true,
|
||||
'C': true,
|
||||
'D': true,
|
||||
'E': true,
|
||||
'F': true,
|
||||
'G': true,
|
||||
'H': true,
|
||||
'I': true,
|
||||
'J': true,
|
||||
'K': true,
|
||||
'L': true,
|
||||
'M': true,
|
||||
'N': true,
|
||||
'O': true,
|
||||
'P': true,
|
||||
'Q': true,
|
||||
'R': true,
|
||||
'S': true,
|
||||
'T': true,
|
||||
'U': true,
|
||||
'V': true,
|
||||
'W': true,
|
||||
'X': true,
|
||||
'Y': true,
|
||||
'Z': true,
|
||||
'[': true,
|
||||
'\\': false,
|
||||
']': true,
|
||||
'^': true,
|
||||
'_': true,
|
||||
'`': true,
|
||||
'a': true,
|
||||
'b': true,
|
||||
'c': true,
|
||||
'd': true,
|
||||
'e': true,
|
||||
'f': true,
|
||||
'g': true,
|
||||
'h': true,
|
||||
'i': true,
|
||||
'j': true,
|
||||
'k': true,
|
||||
'l': true,
|
||||
'm': true,
|
||||
'n': true,
|
||||
'o': true,
|
||||
'p': true,
|
||||
'q': true,
|
||||
'r': true,
|
||||
's': true,
|
||||
't': true,
|
||||
'u': true,
|
||||
'v': true,
|
||||
'w': true,
|
||||
'x': true,
|
||||
'y': true,
|
||||
'z': true,
|
||||
'{': true,
|
||||
'|': true,
|
||||
'}': true,
|
||||
'~': true,
|
||||
'\u007f': true,
|
||||
}
|
||||
|
||||
// safeSet holds the value true if the ASCII character with the given array
|
||||
// position can be represented inside a JSON string without any further
|
||||
// escaping.
|
||||
//
|
||||
// All values are true except for the ASCII control characters (0-31), the
|
||||
// double quote ("), and the backslash character ("\").
|
||||
var safeSet = [utf8.RuneSelf]bool{
|
||||
' ': true,
|
||||
'!': true,
|
||||
'"': false,
|
||||
'#': true,
|
||||
'$': true,
|
||||
'%': true,
|
||||
'&': true,
|
||||
'\'': true,
|
||||
'(': true,
|
||||
')': true,
|
||||
'*': true,
|
||||
'+': true,
|
||||
',': true,
|
||||
'-': true,
|
||||
'.': true,
|
||||
'/': true,
|
||||
'0': true,
|
||||
'1': true,
|
||||
'2': true,
|
||||
'3': true,
|
||||
'4': true,
|
||||
'5': true,
|
||||
'6': true,
|
||||
'7': true,
|
||||
'8': true,
|
||||
'9': true,
|
||||
':': true,
|
||||
';': true,
|
||||
'<': true,
|
||||
'=': true,
|
||||
'>': true,
|
||||
'?': true,
|
||||
'@': true,
|
||||
'A': true,
|
||||
'B': true,
|
||||
'C': true,
|
||||
'D': true,
|
||||
'E': true,
|
||||
'F': true,
|
||||
'G': true,
|
||||
'H': true,
|
||||
'I': true,
|
||||
'J': true,
|
||||
'K': true,
|
||||
'L': true,
|
||||
'M': true,
|
||||
'N': true,
|
||||
'O': true,
|
||||
'P': true,
|
||||
'Q': true,
|
||||
'R': true,
|
||||
'S': true,
|
||||
'T': true,
|
||||
'U': true,
|
||||
'V': true,
|
||||
'W': true,
|
||||
'X': true,
|
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'Y': true,
|
||||
'Z': true,
|
||||
'[': true,
|
||||
'\\': false,
|
||||
']': true,
|
||||
'^': true,
|
||||
'_': true,
|
||||
'`': true,
|
||||
'a': true,
|
||||
'b': true,
|
||||
'c': true,
|
||||
'd': true,
|
||||
'e': true,
|
||||
'f': true,
|
||||
'g': true,
|
||||
'h': true,
|
||||
'i': true,
|
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'j': true,
|
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'k': true,
|
||||
'l': true,
|
||||
'm': true,
|
||||
'n': true,
|
||||
'o': true,
|
||||
'p': true,
|
||||
'q': true,
|
||||
'r': true,
|
||||
's': true,
|
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't': true,
|
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'u': true,
|
||||
'v': true,
|
||||
'w': true,
|
||||
'x': true,
|
||||
'y': true,
|
||||
'z': true,
|
||||
'{': true,
|
||||
'|': true,
|
||||
'}': true,
|
||||
'~': true,
|
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'\u007f': true,
|
||||
}
|
||||
|
||||
var hex = "0123456789abcdef"
|
||||
|
||||
// WriteStringWithHTMLEscaped write string to stream with html special characters escaped
|
||||
func (stream *Stream) WriteStringWithHTMLEscaped(s string) {
|
||||
stream.ensure(32)
|
||||
valLen := len(s)
|
||||
toWriteLen := valLen
|
||||
bufLengthMinusTwo := len(stream.buf) - 2 // make room for the quotes
|
||||
if stream.n+toWriteLen > bufLengthMinusTwo {
|
||||
toWriteLen = bufLengthMinusTwo - stream.n
|
||||
}
|
||||
n := stream.n
|
||||
stream.buf[n] = '"'
|
||||
n++
|
||||
// write string, the fast path, without utf8 and escape support
|
||||
i := 0
|
||||
for ; i < toWriteLen; i++ {
|
||||
c := s[i]
|
||||
if c < utf8.RuneSelf && htmlSafeSet[c] {
|
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stream.buf[n] = c
|
||||
n++
|
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} else {
|
||||
break
|
||||
}
|
||||
}
|
||||
if i == valLen {
|
||||
stream.buf[n] = '"'
|
||||
n++
|
||||
stream.n = n
|
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return
|
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}
|
||||
stream.n = n
|
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writeStringSlowPathWithHTMLEscaped(stream, i, s, valLen)
|
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}
|
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|
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func writeStringSlowPathWithHTMLEscaped(stream *Stream, i int, s string, valLen int) {
|
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start := i
|
||||
// for the remaining parts, we process them char by char
|
||||
for i < valLen {
|
||||
if b := s[i]; b < utf8.RuneSelf {
|
||||
if htmlSafeSet[b] {
|
||||
i++
|
||||
continue
|
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}
|
||||
if start < i {
|
||||
stream.WriteRaw(s[start:i])
|
||||
}
|
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switch b {
|
||||
case '\\', '"':
|
||||
stream.writeTwoBytes('\\', b)
|
||||
case '\n':
|
||||
stream.writeTwoBytes('\\', 'n')
|
||||
case '\r':
|
||||
stream.writeTwoBytes('\\', 'r')
|
||||
case '\t':
|
||||
stream.writeTwoBytes('\\', 't')
|
||||
default:
|
||||
// This encodes bytes < 0x20 except for \t, \n and \r.
|
||||
// If escapeHTML is set, it also escapes <, >, and &
|
||||
// because they can lead to security holes when
|
||||
// user-controlled strings are rendered into JSON
|
||||
// and served to some browsers.
|
||||
stream.WriteRaw(`\u00`)
|
||||
stream.writeTwoBytes(hex[b>>4], hex[b&0xF])
|
||||
}
|
||||
i++
|
||||
start = i
|
||||
continue
|
||||
}
|
||||
c, size := utf8.DecodeRuneInString(s[i:])
|
||||
if c == utf8.RuneError && size == 1 {
|
||||
if start < i {
|
||||
stream.WriteRaw(s[start:i])
|
||||
}
|
||||
stream.WriteRaw(`\ufffd`)
|
||||
i++
|
||||
start = i
|
||||
continue
|
||||
}
|
||||
// U+2028 is LINE SEPARATOR.
|
||||
// U+2029 is PARAGRAPH SEPARATOR.
|
||||
// They are both technically valid characters in JSON strings,
|
||||
// but don't work in JSONP, which has to be evaluated as JavaScript,
|
||||
// and can lead to security holes there. It is valid JSON to
|
||||
// escape them, so we do so unconditionally.
|
||||
// See http://timelessrepo.com/json-isnt-a-javascript-subset for discussion.
|
||||
if c == '\u2028' || c == '\u2029' {
|
||||
if start < i {
|
||||
stream.WriteRaw(s[start:i])
|
||||
}
|
||||
stream.WriteRaw(`\u202`)
|
||||
stream.writeByte(hex[c&0xF])
|
||||
i += size
|
||||
start = i
|
||||
continue
|
||||
}
|
||||
i += size
|
||||
}
|
||||
if start < len(s) {
|
||||
stream.WriteRaw(s[start:])
|
||||
}
|
||||
stream.writeByte('"')
|
||||
}
|
||||
|
||||
// WriteString write string to stream without html escape
|
||||
func (stream *Stream) WriteString(s string) {
|
||||
stream.ensure(32)
|
||||
valLen := len(s)
|
||||
toWriteLen := valLen
|
||||
bufLengthMinusTwo := len(stream.buf) - 2 // make room for the quotes
|
||||
if stream.n+toWriteLen > bufLengthMinusTwo {
|
||||
toWriteLen = bufLengthMinusTwo - stream.n
|
||||
}
|
||||
n := stream.n
|
||||
stream.buf[n] = '"'
|
||||
n++
|
||||
// write string, the fast path, without utf8 and escape support
|
||||
i := 0
|
||||
for ; i < toWriteLen; i++ {
|
||||
c := s[i]
|
||||
if c > 31 && c != '"' && c != '\\' {
|
||||
stream.buf[n] = c
|
||||
n++
|
||||
} else {
|
||||
break
|
||||
}
|
||||
}
|
||||
if i == valLen {
|
||||
stream.buf[n] = '"'
|
||||
n++
|
||||
stream.n = n
|
||||
return
|
||||
}
|
||||
stream.n = n
|
||||
writeStringSlowPath(stream, i, s, valLen)
|
||||
}
|
||||
|
||||
func writeStringSlowPath(stream *Stream, i int, s string, valLen int) {
|
||||
start := i
|
||||
// for the remaining parts, we process them char by char
|
||||
for i < valLen {
|
||||
if b := s[i]; b < utf8.RuneSelf {
|
||||
if safeSet[b] {
|
||||
i++
|
||||
continue
|
||||
}
|
||||
if start < i {
|
||||
stream.WriteRaw(s[start:i])
|
||||
}
|
||||
switch b {
|
||||
case '\\', '"':
|
||||
stream.writeTwoBytes('\\', b)
|
||||
case '\n':
|
||||
stream.writeTwoBytes('\\', 'n')
|
||||
case '\r':
|
||||
stream.writeTwoBytes('\\', 'r')
|
||||
case '\t':
|
||||
stream.writeTwoBytes('\\', 't')
|
||||
default:
|
||||
// This encodes bytes < 0x20 except for \t, \n and \r.
|
||||
// If escapeHTML is set, it also escapes <, >, and &
|
||||
// because they can lead to security holes when
|
||||
// user-controlled strings are rendered into JSON
|
||||
// and served to some browsers.
|
||||
stream.WriteRaw(`\u00`)
|
||||
stream.writeTwoBytes(hex[b>>4], hex[b&0xF])
|
||||
}
|
||||
i++
|
||||
start = i
|
||||
continue
|
||||
}
|
||||
i++
|
||||
continue
|
||||
}
|
||||
if start < len(s) {
|
||||
stream.WriteRaw(s[start:])
|
||||
}
|
||||
stream.writeByte('"')
|
||||
}
|
||||
Reference in New Issue
Block a user