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Side by Side Diff: base/utf_string_conversions.h

Issue 243102: Convert base dependencies to use sys_string_conversions instead of the ICU... (Closed) Base URL: svn://chrome-svn/chrome/trunk/src/
Patch Set: '' Created 11 years, 2 months ago
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Added: svn:mergeinfo
Merged /branches/chrome_webkit_merge_branch/base/i18n/string_conversions.h:r69-2775
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1 // Copyright (c) 2009 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2009 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_I18N_STRING_CONVERSIONS_H_ 5 #ifndef BASE_UTF_STRING_CONVERSIONS_H_
6 #define BASE_I18N_STRING_CONVERSIONS_H_ 6 #define BASE_UTF_STRING_CONVERSIONS_H_
7 7
8 #include <string> 8 #include <string>
9 9
10 #include "base/string16.h" 10 #include "base/string16.h"
11 #include "base/string_piece.h" 11 #include "base/string_piece.h"
12 12
13 // These convert between UTF-8, -16, and -32 strings. They are potentially slow, 13 // These convert between UTF-8, -16, and -32 strings. They are potentially slow,
14 // so avoid unnecessary conversions. The low-level versions return a boolean 14 // so avoid unnecessary conversions. The low-level versions return a boolean
15 // indicating whether the conversion was 100% valid. In this case, it will still 15 // indicating whether the conversion was 100% valid. In this case, it will still
16 // do the best it can and put the result in the output buffer. The versions that 16 // do the best it can and put the result in the output buffer. The versions that
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44 // porting whatever module uses wstring and the conversion is being used as a 44 // porting whatever module uses wstring and the conversion is being used as a
45 // stopcock. This makes it easy to grep for the ones that should be removed. 45 // stopcock. This makes it easy to grep for the ones that should be removed.
46 #if defined(OS_WIN) 46 #if defined(OS_WIN)
47 # define WideToUTF16Hack 47 # define WideToUTF16Hack
48 # define UTF16ToWideHack 48 # define UTF16ToWideHack
49 #else 49 #else
50 # define WideToUTF16Hack WideToUTF16 50 # define WideToUTF16Hack WideToUTF16
51 # define UTF16ToWideHack UTF16ToWide 51 # define UTF16ToWideHack UTF16ToWide
52 #endif 52 #endif
53 53
54 // Defines the error handling modes of UTF16ToCodepage, CodepageToUTF16, 54 #endif // BASE_UTF_STRING_CONVERSIONS_H_
55 // WideToCodepage and CodepageToWide.
56 class OnStringUtilConversionError {
57 public:
58 enum Type {
59 // The function will return failure. The output buffer will be empty.
60 FAIL,
61
62 // The offending characters are skipped and the conversion will proceed as
63 // if they did not exist.
64 SKIP,
65
66 // When converting to Unicode, the offending byte sequences are substituted
67 // by Unicode replacement character (U+FFFD). When converting from Unicode,
68 // this is the same as SKIP.
69 SUBSTITUTE,
70 };
71
72 private:
73 OnStringUtilConversionError();
74 };
75
76 // Converts between UTF-16 strings and the encoding specified. If the
77 // encoding doesn't exist or the encoding fails (when on_error is FAIL),
78 // returns false.
79 bool UTF16ToCodepage(const string16& utf16,
80 const char* codepage_name,
81 OnStringUtilConversionError::Type on_error,
82 std::string* encoded);
83
84 bool CodepageToUTF16(const std::string& encoded,
85 const char* codepage_name,
86 OnStringUtilConversionError::Type on_error,
87 string16* utf16);
88
89 // Converts between wide strings and the encoding specified. If the
90 // encoding doesn't exist or the encoding fails (when on_error is FAIL),
91 // returns false.
92 bool WideToCodepage(const std::wstring& wide,
93 const char* codepage_name,
94 OnStringUtilConversionError::Type on_error,
95 std::string* encoded);
96 bool CodepageToWide(const std::string& encoded,
97 const char* codepage_name,
98 OnStringUtilConversionError::Type on_error,
99 std::wstring* wide);
100
101 #endif // BASE_I18N_STRING_CONVERSIONS_H_
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