ui/base/text/bytes_formatting.cc - Issue 854713003: More old files deletion.

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Issue 854713003: More old files deletion. (Closed) Base URL: https://github.com/domokit/mojo.git@master

Patch Set: Fix tryjobs? Created 5 years, 11 months ago

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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

3 // found in the LICENSE file.

4

5 #include "ui/base/text/bytes_formatting.h"

6

7 #include "base/i18n/number_formatting.h"

8 #include "base/logging.h"

9 #include "base/strings/string_util.h"

10 #include "base/strings/utf_string_conversions.h"

11 #include "ui/base/l10n/l10n_util.h"

12 #include "ui/strings/grit/ui_strings.h"

13

14 namespace ui {

15

16 namespace {

17

18 // Byte suffix string constants. These both must match the DataUnits enum.

19 const int kByteStrings[] = {

20 IDS_APP_BYTES,

21 IDS_APP_KIBIBYTES,

22 IDS_APP_MEBIBYTES,

23 IDS_APP_GIBIBYTES,

24 IDS_APP_TEBIBYTES,

25 IDS_APP_PEBIBYTES

26 };

27

28 const int kSpeedStrings[] = {

29 IDS_APP_BYTES_PER_SECOND,

30 IDS_APP_KIBIBYTES_PER_SECOND,

31 IDS_APP_MEBIBYTES_PER_SECOND,

32 IDS_APP_GIBIBYTES_PER_SECOND,

33 IDS_APP_TEBIBYTES_PER_SECOND,

34 IDS_APP_PEBIBYTES_PER_SECOND

35 };

36

37 base::string16 FormatBytesInternal(int64 bytes,

38 DataUnits units,

39 bool show_units,

40 const int* const suffix) {

41 DCHECK(units >= DATA_UNITS_BYTE && units <= DATA_UNITS_PEBIBYTE);

42 if (bytes < 0) {

43 NOTREACHED() << "Negative bytes value";

44 return base::string16();

45 }

46

47 // Put the quantity in the right units.

48 double unit_amount = static_cast<double>(bytes);

49 for (int i = 0; i < units; ++i)

50 unit_amount /= 1024.0;

51

52 int fractional_digits = 0;

53 if (bytes != 0 && units != DATA_UNITS_BYTE && unit_amount < 100)

54 fractional_digits = 1;

55

56 base::string16 result = base::FormatDouble(unit_amount, fractional_digits);

57

58 if (show_units)

59 result = l10n_util::GetStringFUTF16(suffix[units], result);

60

61 return result;

62 }

63

64 } // namespace

65

66 DataUnits GetByteDisplayUnits(int64 bytes) {

67 // The byte thresholds at which we display amounts. A byte count is displayed

68 // in unit U when kUnitThresholds[U] <= bytes < kUnitThresholds[U+1].

69 // This must match the DataUnits enum.

70 static const int64 kUnitThresholds[] = {

71 0, // DATA_UNITS_BYTE,

72 3 * (1LL << 10), // DATA_UNITS_KIBIBYTE,

73 2 * (1LL << 20), // DATA_UNITS_MEBIBYTE,

74 1LL << 30, // DATA_UNITS_GIBIBYTE,

75 1LL << 40, // DATA_UNITS_TEBIBYTE,

76 1LL << 50 // DATA_UNITS_PEBIBYTE,

77 };

78

79 if (bytes < 0) {

80 NOTREACHED() << "Negative bytes value";

81 return DATA_UNITS_BYTE;

82 }

83

84 int unit_index = arraysize(kUnitThresholds);

85 while (--unit_index > 0) {

86 if (bytes >= kUnitThresholds[unit_index])

87 break;

88 }

89

90 DCHECK(unit_index >= DATA_UNITS_BYTE && unit_index <= DATA_UNITS_PEBIBYTE);

91 return DataUnits(unit_index);

92 }

93

94 base::string16 FormatBytesWithUnits(int64 bytes,

95 DataUnits units,

96 bool show_units) {

97 return FormatBytesInternal(bytes, units, show_units, kByteStrings);

98 }

99

100 base::string16 FormatSpeedWithUnits(int64 bytes,

101 DataUnits units,

102 bool show_units) {

103 return FormatBytesInternal(bytes, units, show_units, kSpeedStrings);

104 }

105

106 base::string16 FormatBytes(int64 bytes) {

107 return FormatBytesWithUnits(bytes, GetByteDisplayUnits(bytes), true);

108 }

109

110 base::string16 FormatSpeed(int64 bytes) {

111 return FormatSpeedWithUnits(bytes, GetByteDisplayUnits(bytes), true);

112 }

113

114 } // namespace ui

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