mirror of
https://github.com/golang/go
synced 2024-11-23 01:40:03 -07:00
55 lines
1.2 KiB
Go
55 lines
1.2 KiB
Go
// $G $F.go && $L $F.$A && ./$A.out
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// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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import "utf8"
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func main() {
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var chars [6] int;
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chars[0] = 'a';
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chars[1] = 'b';
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chars[2] = 'c';
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chars[3] = '\u65e5';
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chars[4] = '\u672c';
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chars[5] = '\u8a9e';
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s := "";
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for i := 0; i < 6; i++ {
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s += string(chars[i]);
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}
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var l = len(s);
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for w, i, j := 0,0,0; i < l; i += w {
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var r int;
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r, w = utf8.DecodeRuneInString(s, i);
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if w == 0 { panic("zero width in string") }
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if r != chars[j] { panic("wrong value from string") }
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j++;
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}
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// encoded as bytes: 'a' 'b' 'c' e6 97 a5 e6 9c ac e8 aa 9e
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const L = 12;
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if L != l { panic("wrong length constructing array") }
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a := make([]byte, L);
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a[0] = 'a';
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a[1] = 'b';
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a[2] = 'c';
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a[3] = 0xe6;
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a[4] = 0x97;
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a[5] = 0xa5;
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a[6] = 0xe6;
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a[7] = 0x9c;
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a[8] = 0xac;
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a[9] = 0xe8;
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a[10] = 0xaa;
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a[11] = 0x9e;
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for w, i, j := 0,0,0; i < L; i += w {
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var r int;
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r, w = utf8.DecodeRune(a[i:L]);
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if w == 0 { panic("zero width in bytes") }
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if r != chars[j] { panic("wrong value from bytes") }
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j++;
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}
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}
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