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string_util: Remove StringFromFormat() and related functions

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Given we utilize fmt, we don't need to provide our own functions for formatting anymore
This commit is contained in:
Lioncash 2018-04-29 18:37:15 -04:00
parent 869075867b
commit 3abba08080
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GPG key ID: 4E3C3CC1031BA9C7
8 changed files with 19 additions and 99 deletions
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70
src/common/string_util.cpp
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@ -46,76 +46,6 @@ bool AsciiToHex(const char* _szValue, u32& result) {
return true;
}
bool CharArrayFromFormatV(char* out, int outsize, const char* format, va_list args) {
int writtenCount;
#ifdef _MSC_VER
// You would think *printf are simple, right? Iterate on each character,
// if it's a format specifier handle it properly, etc.
//
// Nooooo. Not according to the C standard.
//
// According to the C99 standard (7.19.6.1 "The fprintf function")
// The format shall be a multibyte character sequence
//
// Because some character encodings might have '%' signs in the middle of
// a multibyte sequence (SJIS for example only specifies that the first
// byte of a 2 byte sequence is "high", the second byte can be anything),
// printf functions have to decode the multibyte sequences and try their
// best to not screw up.
//
// Unfortunately, on Windows, the locale for most languages is not UTF-8
// as we would need. Notably, for zh_TW, Windows chooses EUC-CN as the
// locale, and completely fails when trying to decode UTF-8 as EUC-CN.
//
// On the other hand, the fix is simple: because we use UTF-8, no such
// multibyte handling is required as we can simply assume that no '%' char
// will be present in the middle of a multibyte sequence.
//
// This is why we lookup an ANSI (cp1252) locale here and use _vsnprintf_l.
static locale_t c_locale = nullptr;
if (!c_locale)
c_locale = _create_locale(LC_ALL, ".1252");
writtenCount = _vsnprintf_l(out, outsize, format, c_locale, args);
#else
writtenCount = vsnprintf(out, outsize, format, args);
#endif
if (writtenCount > 0 && writtenCount < outsize) {
out[writtenCount] = '\0';
return true;
} else {
out[outsize - 1] = '\0';
return false;
}
}
std::string StringFromFormat(const char* format, ...) {
va_list args;
char* buf = nullptr;
#ifdef _WIN32
int required = 0;
va_start(args, format);
required = _vscprintf(format, args);
buf = new char[required + 1];
CharArrayFromFormatV(buf, required + 1, format, args);
va_end(args);
std::string temp = buf;
delete[] buf;
#else
va_start(args, format);
if (vasprintf(&buf, format, args) < 0)
NGLOG_ERROR(Common, "Unable to allocate memory for string");
va_end(args);
std::string temp = buf;
free(buf);
#endif
return temp;
}
// For Debugging. Read out an u8 array.
std::string ArrayToString(const u8* data, size_t size, int line_len, bool spaces) {
std::ostringstream oss;