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Added prettify for Kilo and Kibi units.

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This commit is contained in:
Branimir Karadžić
2017-06-13 21:26:08 -07:00
parent cd8d5b8117
commit 61fc7f2996
2 changed files with 33 additions and 7 deletions
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13
include/bx/string.h
View File

@@ -12,6 +12,15 @@
namespace bx
{
struct Units
{
enum Enum
{
Kilo,
Kibi,
};
};
/// Non-zero-terminated string view.
class StringView
{
@@ -212,8 +221,8 @@ namespace bx
/// Extract base file name from file path.
const char* baseName(const char* _filePath);
/// Convert size in bytes to human readable string.
void prettify(char* _out, int32_t _count, uint64_t _size);
/// Convert size in bytes to human readable string kibi units.
int32_t prettify(char* _out, int32_t _count, uint64_t _size, Units::Enum _units = Units::Kibi);
///
int32_t toString(char* _out, int32_t _max, double _value);

27
src/string.cpp
View File

@@ -906,19 +906,36 @@ namespace bx
return _filePath;
}
void prettify(char* _out, int32_t _count, uint64_t _size)
static const char s_units[] = { 'B', 'K', 'M', 'G', 'T', 'P', 'E', 'Z', 'Y' };
template<uint32_t Kilo, char KiloCh0, char KiloCh1>
static int32_t prettify(char* _out, int32_t _count, uint64_t _size)
{
uint8_t idx = 0;
double size = double(_size);
while (_size != (_size&0x7ff)
&& idx < 9)
&& idx < BX_COUNTOF(s_units) )
{
_size >>= 10;
size *= 1.0/1024.0;
_size /= Kilo;
size *= 1.0/double(Kilo);
++idx;
}
snprintf(_out, _count, "%0.2f %c%c", size, "BkMGTPEZY"[idx], idx > 0 ? 'B' : '\0');
return snprintf(_out, _count, "%0.2f %c%c%c", size
, s_units[idx]
, idx > 0 ? KiloCh0 : '\0'
, KiloCh1
);
}
int32_t prettify(char* _out, int32_t _count, uint64_t _size, Units::Enum _units)
{
if (Units::Kilo == _units)
{
return prettify<1000, 'B', '\0'>(_out, _count, _size);
}
return prettify<1024, 'i', 'B'>(_out, _count, _size);
}
} // namespace bx