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#include "slang-string-util.h"
namespace Slang {
// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! StringBlob !!!!!!!!!!!!!!!!!!!!!!!!!!!
// Allocate static const storage for the various interface IDs that the Slang API needs to expose
static const Guid IID_ISlangUnknown = SLANG_UUID_ISlangUnknown;
static const Guid IID_ISlangBlob = SLANG_UUID_ISlangBlob;
/* static */ISlangUnknown* StringBlob::getInterface(const Guid& guid)
{
return (guid == IID_ISlangUnknown || guid == IID_ISlangBlob) ? static_cast<ISlangBlob*>(this) : nullptr;
}
// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! StringUtil !!!!!!!!!!!!!!!!!!!!!!!!!!!
/* static */void StringUtil::split(const UnownedStringSlice& in, char splitChar, List<UnownedStringSlice>& slicesOut)
{
slicesOut.Clear();
const char* start = in.begin();
const char* end = in.end();
while (start < end)
{
// Move cur so it's either at the end or at next split character
const char* cur = start;
while (cur < end && *cur != splitChar)
{
cur++;
}
// Add to output
slicesOut.Add(UnownedStringSlice(start, cur));
// Skip the split character, if at end we are okay anyway
start = cur + 1;
}
}
/* static */size_t StringUtil::calcFormattedSize(const char* format, va_list args)
{
#if SLANG_WINDOWS_FAMILY
return _vscprintf(format, args);
#else
return vsnprintf(nullptr, 0, format, args);
#endif
}
/* static */void StringUtil::calcFormatted(const char* format, va_list args, size_t numChars, char* dst)
{
#if SLANG_WINDOWS_FAMILY
vsnprintf_s(dst, numChars + 1, _TRUNCATE, format, args);
#else
vsnprintf(dst, numChars + 1, format, args);
#endif
}
/* static */void StringUtil::append(const char* format, va_list args, StringBuilder& buf)
{
// Calculate the size required (not including terminating 0)
size_t numChars;
{
// Create a copy of args, as will be consumed by calcFormattedSize
va_list argsCopy;
va_copy(argsCopy, args);
numChars = calcFormattedSize(format, argsCopy);
va_end(argsCopy);
}
// Requires + 1 , because calcFormatted appends a terminating 0
char* dst = buf.prepareForAppend(numChars + 1);
calcFormatted(format, args, numChars, dst);
buf.appendInPlace(dst, numChars);
}
/* static */void StringUtil::appendFormat(StringBuilder& buf, const char* format, ...)
{
va_list args;
va_start(args, format);
append(format, args, buf);
va_end(args);
}
/* static */String StringUtil::makeStringWithFormat(const char* format, ...)
{
StringBuilder builder;
va_list args;
va_start(args, format);
append(format, args, builder);
va_end(args);
return builder;
}
/* static */String StringUtil::getString(ISlangBlob* blob)
{
if (blob)
{
size_t size = blob->getBufferSize();
if (size > 0)
{
const char* contents = (const char*)blob->getBufferPointer();
// Check it has terminating 0, if not we must construct as if it does
if (contents[size - 1] == 0)
{
size--;
}
return String(contents, contents + size);
}
}
return String();
}
ComPtr<ISlangBlob> StringUtil::createStringBlob(const String& string)
{
return ComPtr<ISlangBlob>(new StringBlob(string));
}
/* static */String StringUtil::calcCharReplaced(const UnownedStringSlice& slice, char fromChar, char toChar)
{
if (fromChar == toChar)
{
return slice;
}
const UInt numChars = slice.size();
const char* srcChars = slice.begin();
StringBuilder builder;
char* dstChars = builder.prepareForAppend(numChars);
for (UInt i = 0; i < numChars; ++i)
{
char c = srcChars[i];
dstChars[i] = (c == fromChar) ? toChar : c;
}
builder.appendInPlace(dstChars, numChars);
return builder;
}
/* static */String StringUtil::calcCharReplaced(const String& string, char fromChar, char toChar)
{
return (fromChar == toChar || string.IndexOf(fromChar) == UInt(-1)) ? string : calcCharReplaced(string.getUnownedSlice(), fromChar, toChar);
}
} // namespace Slang
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