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Side by Side Diff: base/utf_string_conversion_utils.h

Issue 7461141: Rename BASE_API to BASE_EXPORT. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src/
Patch Set: '' Created 9 years, 4 months ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef BASE_UTF_STRING_CONVERSION_UTILS_H_ 5 #ifndef BASE_UTF_STRING_CONVERSION_UTILS_H_
6 #define BASE_UTF_STRING_CONVERSION_UTILS_H_ 6 #define BASE_UTF_STRING_CONVERSION_UTILS_H_
7 #pragma once 7 #pragma once
8 8
9 // This should only be used by the various UTF string conversion files. 9 // This should only be used by the various UTF string conversion files.
10 10
11 #include "base/base_api.h" 11 #include "base/base_export.h"
12 #include "base/string16.h" 12 #include "base/string16.h"
13 13
14 namespace base { 14 namespace base {
15 15
16 inline bool IsValidCodepoint(uint32 code_point) { 16 inline bool IsValidCodepoint(uint32 code_point) {
17 // Excludes the surrogate code points ([0xD800, 0xDFFF]) and 17 // Excludes the surrogate code points ([0xD800, 0xDFFF]) and
18 // codepoints larger than 0x10FFFF (the highest codepoint allowed). 18 // codepoints larger than 0x10FFFF (the highest codepoint allowed).
19 // Non-characters and unassigned codepoints are allowed. 19 // Non-characters and unassigned codepoints are allowed.
20 return code_point < 0xD800u || 20 return code_point < 0xD800u ||
21 (code_point >= 0xE000u && code_point <= 0x10FFFFu); 21 (code_point >= 0xE000u && code_point <= 0x10FFFFu);
22 } 22 }
23 23
24 inline bool IsValidCharacter(uint32 code_point) { 24 inline bool IsValidCharacter(uint32 code_point) {
25 // Excludes non-characters (U+FDD0..U+FDEF, and all codepoints ending in 25 // Excludes non-characters (U+FDD0..U+FDEF, and all codepoints ending in
26 // 0xFFFE or 0xFFFF) from the set of valid code points. 26 // 0xFFFE or 0xFFFF) from the set of valid code points.
27 return code_point < 0xD800u || (code_point >= 0xE000u && 27 return code_point < 0xD800u || (code_point >= 0xE000u &&
28 code_point < 0xFDD0u) || (code_point > 0xFDEFu && 28 code_point < 0xFDD0u) || (code_point > 0xFDEFu &&
29 code_point <= 0x10FFFFu && (code_point & 0xFFFEu) != 0xFFFEu); 29 code_point <= 0x10FFFFu && (code_point & 0xFFFEu) != 0xFFFEu);
30 } 30 }
31 31
32 // ReadUnicodeCharacter -------------------------------------------------------- 32 // ReadUnicodeCharacter --------------------------------------------------------
33 33
34 // Reads a UTF-8 stream, placing the next code point into the given output 34 // Reads a UTF-8 stream, placing the next code point into the given output
35 // |*code_point|. |src| represents the entire string to read, and |*char_index| 35 // |*code_point|. |src| represents the entire string to read, and |*char_index|
36 // is the character offset within the string to start reading at. |*char_index| 36 // is the character offset within the string to start reading at. |*char_index|
37 // will be updated to index the last character read, such that incrementing it 37 // will be updated to index the last character read, such that incrementing it
38 // (as in a for loop) will take the reader to the next character. 38 // (as in a for loop) will take the reader to the next character.
39 // 39 //
40 // Returns true on success. On false, |*code_point| will be invalid. 40 // Returns true on success. On false, |*code_point| will be invalid.
41 BASE_API bool ReadUnicodeCharacter(const char* src, 41 BASE_EXPORT bool ReadUnicodeCharacter(const char* src,
42 int32 src_len, 42 int32 src_len,
43 int32* char_index, 43 int32* char_index,
44 uint32* code_point_out); 44 uint32* code_point_out);
45 45
46 // Reads a UTF-16 character. The usage is the same as the 8-bit version above. 46 // Reads a UTF-16 character. The usage is the same as the 8-bit version above.
47 BASE_API bool ReadUnicodeCharacter(const char16* src, 47 BASE_EXPORT bool ReadUnicodeCharacter(const char16* src,
48 int32 src_len, 48 int32 src_len,
49 int32* char_index, 49 int32* char_index,
50 uint32* code_point); 50 uint32* code_point);
51 51
52 #if defined(WCHAR_T_IS_UTF32) 52 #if defined(WCHAR_T_IS_UTF32)
53 // Reads UTF-32 character. The usage is the same as the 8-bit version above. 53 // Reads UTF-32 character. The usage is the same as the 8-bit version above.
54 BASE_API bool ReadUnicodeCharacter(const wchar_t* src, 54 BASE_EXPORT bool ReadUnicodeCharacter(const wchar_t* src,
55 int32 src_len, 55 int32 src_len,
56 int32* char_index, 56 int32* char_index,
57 uint32* code_point); 57 uint32* code_point);
58 #endif // defined(WCHAR_T_IS_UTF32) 58 #endif // defined(WCHAR_T_IS_UTF32)
59 59
60 // WriteUnicodeCharacter ------------------------------------------------------- 60 // WriteUnicodeCharacter -------------------------------------------------------
61 61
62 // Appends a UTF-8 character to the given 8-bit string. Returns the number of 62 // Appends a UTF-8 character to the given 8-bit string. Returns the number of
63 // bytes written. 63 // bytes written.
64 // TODO(brettw) Bug 79631: This function should not be exposed. 64 // TODO(brettw) Bug 79631: This function should not be exposed.
65 BASE_API size_t WriteUnicodeCharacter(uint32 code_point, std::string* output); 65 BASE_EXPORT size_t WriteUnicodeCharacter(uint32 code_point,
66 std::string* output);
66 67
67 // Appends the given code point as a UTF-16 character to the given 16-bit 68 // Appends the given code point as a UTF-16 character to the given 16-bit
68 // string. Returns the number of 16-bit values written. 69 // string. Returns the number of 16-bit values written.
69 size_t WriteUnicodeCharacter(uint32 code_point, string16* output); 70 size_t WriteUnicodeCharacter(uint32 code_point, string16* output);
70 71
71 #if defined(WCHAR_T_IS_UTF32) 72 #if defined(WCHAR_T_IS_UTF32)
72 // Appends the given UTF-32 character to the given 32-bit string. Returns the 73 // Appends the given UTF-32 character to the given 32-bit string. Returns the
73 // number of 32-bit values written. 74 // number of 32-bit values written.
74 inline size_t WriteUnicodeCharacter(uint32 code_point, std::wstring* output) { 75 inline size_t WriteUnicodeCharacter(uint32 code_point, std::wstring* output) {
75 // This is the easy case, just append the character. 76 // This is the easy case, just append the character.
(...skipping 12 matching lines...) Expand all
88 void PrepareForUTF8Output(const CHAR* src, size_t src_len, std::string* output); 89 void PrepareForUTF8Output(const CHAR* src, size_t src_len, std::string* output);
89 90
90 // Prepares an output buffer (containing either UTF-16 or -32 data) given some 91 // Prepares an output buffer (containing either UTF-16 or -32 data) given some
91 // UTF-8 input that will be converted to it. See PrepareForUTF8Output(). 92 // UTF-8 input that will be converted to it. See PrepareForUTF8Output().
92 template<typename STRING> 93 template<typename STRING>
93 void PrepareForUTF16Or32Output(const char* src, size_t src_len, STRING* output); 94 void PrepareForUTF16Or32Output(const char* src, size_t src_len, STRING* output);
94 95
95 } // namespace base 96 } // namespace base
96 97
97 #endif // BASE_UTF_STRING_CONVERSION_UTILS_H_ 98 #endif // BASE_UTF_STRING_CONVERSION_UTILS_H_
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