/usr/share/gocode/src/golang.org/x/text/collate/tools/colcmp/darwin.go is in golang-golang-x-text-dev 0.0~git20170627.0.6353ef0-1ubuntu2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 | // Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin
package main
/*
#cgo LDFLAGS: -framework CoreFoundation
#include <CoreFoundation/CFBase.h>
#include <CoreFoundation/CoreFoundation.h>
*/
import "C"
import (
"unsafe"
)
func init() {
AddFactory(CollatorFactory{"osx", newOSX16Collator,
"OS X/Darwin collator, using native strings."})
AddFactory(CollatorFactory{"osx8", newOSX8Collator,
"OS X/Darwin collator for UTF-8."})
}
func osxUInt8P(s []byte) *C.UInt8 {
return (*C.UInt8)(unsafe.Pointer(&s[0]))
}
func osxCharP(s []uint16) *C.UniChar {
return (*C.UniChar)(unsafe.Pointer(&s[0]))
}
// osxCollator implements an Collator based on OS X's CoreFoundation.
type osxCollator struct {
loc C.CFLocaleRef
opt C.CFStringCompareFlags
}
func (c *osxCollator) init(locale string) {
l := C.CFStringCreateWithBytes(
nil,
osxUInt8P([]byte(locale)),
C.CFIndex(len(locale)),
C.kCFStringEncodingUTF8,
C.Boolean(0),
)
c.loc = C.CFLocaleCreate(nil, l)
}
func newOSX8Collator(locale string) (Collator, error) {
c := &osx8Collator{}
c.init(locale)
return c, nil
}
func newOSX16Collator(locale string) (Collator, error) {
c := &osx16Collator{}
c.init(locale)
return c, nil
}
func (c osxCollator) Key(s Input) []byte {
return nil // sort keys not supported by OS X CoreFoundation
}
type osx8Collator struct {
osxCollator
}
type osx16Collator struct {
osxCollator
}
func (c osx16Collator) Compare(a, b Input) int {
sa := C.CFStringCreateWithCharactersNoCopy(
nil,
osxCharP(a.UTF16),
C.CFIndex(len(a.UTF16)),
nil,
)
sb := C.CFStringCreateWithCharactersNoCopy(
nil,
osxCharP(b.UTF16),
C.CFIndex(len(b.UTF16)),
nil,
)
_range := C.CFRangeMake(0, C.CFStringGetLength(sa))
return int(C.CFStringCompareWithOptionsAndLocale(sa, sb, _range, c.opt, c.loc))
}
func (c osx8Collator) Compare(a, b Input) int {
sa := C.CFStringCreateWithBytesNoCopy(
nil,
osxUInt8P(a.UTF8),
C.CFIndex(len(a.UTF8)),
C.kCFStringEncodingUTF8,
C.Boolean(0),
nil,
)
sb := C.CFStringCreateWithBytesNoCopy(
nil,
osxUInt8P(b.UTF8),
C.CFIndex(len(b.UTF8)),
C.kCFStringEncodingUTF8,
C.Boolean(0),
nil,
)
_range := C.CFRangeMake(0, C.CFStringGetLength(sa))
return int(C.CFStringCompareWithOptionsAndLocale(sa, sb, _range, c.opt, c.loc))
}
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