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Side by Side Diff: base/utf_offset_string_conversions.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_OFFSET_STRING_CONVERSIONS_H_ 5 #ifndef BASE_UTF_OFFSET_STRING_CONVERSIONS_H_
6 #define BASE_UTF_OFFSET_STRING_CONVERSIONS_H_ 6 #define BASE_UTF_OFFSET_STRING_CONVERSIONS_H_
7 #pragma once 7 #pragma once
8 8
9 #include <string> 9 #include <string>
10 #include <vector> 10 #include <vector>
11 11
12 #include "base/base_api.h" 12 #include "base/base_export.h"
13 #include "base/string16.h" 13 #include "base/string16.h"
14 14
15 namespace base { 15 namespace base {
16 class StringPiece; 16 class StringPiece;
17 } 17 }
18 18
19 // Like the conversions in utf_string_conversions.h, but also takes one or more 19 // Like the conversions in utf_string_conversions.h, but also takes one or more
20 // offsets (|offset[s]_for_adjustment|) into the source strings, each offset 20 // offsets (|offset[s]_for_adjustment|) into the source strings, each offset
21 // will be adjusted to point at the same logical place in the result strings. 21 // will be adjusted to point at the same logical place in the result strings.
22 // If this isn't possible because an offset points past the end of the source 22 // If this isn't possible because an offset points past the end of the source
23 // strings or into the middle of a multibyte sequence, the offending offset will 23 // strings or into the middle of a multibyte sequence, the offending offset will
24 // be set to string16::npos. |offset[s]_for_adjustment| may be NULL. 24 // be set to string16::npos. |offset[s]_for_adjustment| may be NULL.
25 BASE_API bool UTF8ToUTF16AndAdjustOffset(const char* src, 25 BASE_EXPORT bool UTF8ToUTF16AndAdjustOffset(const char* src,
26 size_t src_len, 26 size_t src_len,
27 string16* output, 27 string16* output,
28 size_t* offset_for_adjustment); 28 size_t* offset_for_adjustment);
29 BASE_API bool UTF8ToUTF16AndAdjustOffsets( 29 BASE_EXPORT bool UTF8ToUTF16AndAdjustOffsets(
30 const char* src, 30 const char* src,
31 size_t src_len, 31 size_t src_len,
32 string16* output, 32 string16* output,
33 std::vector<size_t>* offsets_for_adjustment); 33 std::vector<size_t>* offsets_for_adjustment);
34 34
35 BASE_API string16 UTF8ToUTF16AndAdjustOffset(const base::StringPiece& utf8, 35 BASE_EXPORT string16 UTF8ToUTF16AndAdjustOffset(const base::StringPiece& utf8,
36 size_t* offset_for_adjustment); 36 size_t* offset_for_adjustment);
37 BASE_API string16 UTF8ToUTF16AndAdjustOffsets( 37 BASE_EXPORT string16 UTF8ToUTF16AndAdjustOffsets(
38 const base::StringPiece& utf8, 38 const base::StringPiece& utf8,
39 std::vector<size_t>* offsets_for_adjustment); 39 std::vector<size_t>* offsets_for_adjustment);
40 40
41 // Limiting function callable by std::for_each which will replace any value 41 // Limiting function callable by std::for_each which will replace any value
42 // which is equal to or greater than |limit| with npos. 42 // which is equal to or greater than |limit| with npos.
43 template <typename T> 43 template <typename T>
44 struct LimitOffset { 44 struct LimitOffset {
45 explicit LimitOffset(size_t limit) 45 explicit LimitOffset(size_t limit)
46 : limit_(limit) {} 46 : limit_(limit) {}
47 47
48 void operator()(size_t& offset) { 48 void operator()(size_t& offset) {
49 if (offset >= limit_) 49 if (offset >= limit_)
50 offset = T::npos; 50 offset = T::npos;
51 } 51 }
52 52
53 size_t limit_; 53 size_t limit_;
54 }; 54 };
55 55
56 // Stack object which, on destruction, will update a vector of offsets based on 56 // Stack object which, on destruction, will update a vector of offsets based on
57 // any supplied adjustments. To use, declare one of these, providing the 57 // any supplied adjustments. To use, declare one of these, providing the
58 // address of the offset vector to adjust. Then Add() any number of Adjustments 58 // address of the offset vector to adjust. Then Add() any number of Adjustments
59 // (each Adjustment gives the |original_offset| of a substring and the lengths 59 // (each Adjustment gives the |original_offset| of a substring and the lengths
60 // of the substring before and after transforming). When the OffsetAdjuster 60 // of the substring before and after transforming). When the OffsetAdjuster
61 // goes out of scope, all the offsets in the provided vector will be updated. 61 // goes out of scope, all the offsets in the provided vector will be updated.
62 class BASE_API OffsetAdjuster { 62 class BASE_EXPORT OffsetAdjuster {
63 public: 63 public:
64 struct BASE_API Adjustment { 64 struct BASE_EXPORT Adjustment {
65 Adjustment(size_t original_offset, 65 Adjustment(size_t original_offset,
66 size_t original_length, 66 size_t original_length,
67 size_t output_length); 67 size_t output_length);
68 68
69 size_t original_offset; 69 size_t original_offset;
70 size_t original_length; 70 size_t original_length;
71 size_t output_length; 71 size_t output_length;
72 }; 72 };
73 73
74 explicit OffsetAdjuster(std::vector<size_t>* offsets_for_adjustment); 74 explicit OffsetAdjuster(std::vector<size_t>* offsets_for_adjustment);
75 ~OffsetAdjuster(); 75 ~OffsetAdjuster();
76 76
77 void Add(const Adjustment& adjustment); 77 void Add(const Adjustment& adjustment);
78 78
79 private: 79 private:
80 void AdjustOffset(std::vector<size_t>::iterator offset); 80 void AdjustOffset(std::vector<size_t>::iterator offset);
81 81
82 std::vector<size_t>* offsets_for_adjustment_; 82 std::vector<size_t>* offsets_for_adjustment_;
83 std::vector<Adjustment> adjustments_; 83 std::vector<Adjustment> adjustments_;
84 }; 84 };
85 85
86 #endif // BASE_UTF_OFFSET_STRING_CONVERSIONS_H_ 86 #endif // BASE_UTF_OFFSET_STRING_CONVERSIONS_H_
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