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mirror of https://github.com/RPCS3/rpcs3.git synced 2024-11-25 04:02:42 +01:00
rpcs3/Utilities/StrFmt.h
2015-01-14 16:57:19 +03:00

703 lines
16 KiB
C++

#pragma once
class wxString;
#if defined(_MSC_VER)
#define snprintf _snprintf
#endif
namespace fmt
{
struct empty_t{};
extern const std::string placeholder;
template <typename T>
std::string AfterLast(const std::string& source, T searchstr)
{
size_t search_pos = source.rfind(searchstr);
search_pos = search_pos == std::string::npos ? 0 : search_pos;
return source.substr(search_pos);
}
template <typename T>
std::string BeforeLast(const std::string& source, T searchstr)
{
size_t search_pos = source.rfind(searchstr);
search_pos = search_pos == std::string::npos ? 0 : search_pos;
return source.substr(0, search_pos);
}
template <typename T>
std::string AfterFirst(const std::string& source, T searchstr)
{
size_t search_pos = source.find(searchstr);
search_pos = search_pos == std::string::npos ? 0 : search_pos;
return source.substr(search_pos);
}
template <typename T>
std::string BeforeFirst(const std::string& source, T searchstr)
{
size_t search_pos = source.find(searchstr);
search_pos = search_pos == std::string::npos ? 0 : search_pos;
return source.substr(0, search_pos);
}
// write `fmt` from `pos` to the first occurence of `fmt::placeholder` to
// the stream `os`. Then write `arg` to to the stream. If there's no
// `fmt::placeholder` after `pos` everything in `fmt` after pos is written
// to `os`. Then `arg` is written to `os` after appending a space character
template<typename T>
empty_t write(const std::string &fmt, std::ostream &os, std::string::size_type &pos, T &&arg)
{
std::string::size_type ins = fmt.find(placeholder, pos);
if (ins == std::string::npos)
{
os.write(fmt.data() + pos, fmt.size() - pos);
os << ' ' << arg;
pos = fmt.size();
}
else
{
os.write(fmt.data() + pos, ins - pos);
os << arg;
pos = ins + placeholder.size();
}
return{};
}
// typesafe version of a sprintf-like function. Returns the printed to
// string. To mark positions where the arguments are supposed to be
// inserted use `fmt::placeholder`. If there's not enough placeholders
// the rest of the arguments are appended at the end, seperated by spaces
template<typename ... Args>
std::string SFormat(const std::string &fmt, Args&& ... parameters)
{
std::ostringstream os;
std::string::size_type pos = 0;
std::initializer_list<empty_t> { write(fmt, os, pos, parameters)... };
if (!fmt.empty())
{
os.write(fmt.data() + pos, fmt.size() - pos);
}
std::string result = os.str();
return result;
}
//small wrapper used to deal with bitfields
template<typename T>
T by_value(T x) { return x; }
//wrapper to deal with advance sprintf formating options with automatic length finding
template<typename ... Args>
std::string Format(const char* fmt, Args ... parameters)
{
size_t length = 256;
std::string str;
for (;;)
{
std::vector<char> buffptr(length);
#if !defined(_MSC_VER)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wformat-security"
size_t printlen = snprintf(buffptr.data(), length, fmt, std::forward<Args>(parameters)...);
#pragma clang diagnostic pop
#else
size_t printlen = _snprintf_s(buffptr.data(), length, length - 1, fmt, std::forward<Args>(parameters)...);
#endif
if (printlen < length)
{
str = std::string(buffptr.data(), printlen);
break;
}
length *= 2;
}
return str;
}
std::string replace_first(const std::string& src, const std::string& from, const std::string& to);
std::string replace_all(std::string src, const std::string& from, const std::string& to);
template<size_t list_size>
std::string replace_all(std::string src, const std::pair<std::string, std::string>(&list)[list_size])
{
for (size_t pos = 0; pos < src.length(); ++pos)
{
for (size_t i = 0; i < list_size; ++i)
{
const size_t comp_length = list[i].first.length();
if (src.length() - pos < comp_length)
continue;
if (src.substr(pos, comp_length) == list[i].first)
{
src = (pos ? src.substr(0, pos) + list[i].second : list[i].second) + std::string(src.c_str() + pos + comp_length);
pos += list[i].second.length() - 1;
break;
}
}
}
return src;
}
template<size_t list_size>
std::string replace_all(std::string src, const std::pair<std::string, std::function<std::string()>>(&list)[list_size])
{
for (size_t pos = 0; pos < src.length(); ++pos)
{
for (size_t i = 0; i < list_size; ++i)
{
const size_t comp_length = list[i].first.length();
if (src.length() - pos < comp_length)
continue;
if (src.substr(pos, comp_length) == list[i].first)
{
src = (pos ? src.substr(0, pos) + list[i].second() : list[i].second()) + std::string(src.c_str() + pos + comp_length);
pos += list[i].second().length() - 1;
break;
}
}
}
return src;
}
namespace detail
{
static std::string to_hex(u64 value, size_t count = 1)
{
assert(count - 1 < 16);
count = std::max<u64>(count, 16 - cntlz64(value) / 4);
char res[16] = {};
for (size_t i = count - 1; ~i; i--, value /= 16)
{
res[i] = "0123456789abcdef"[value % 16];
}
return std::string(res, count);
}
static size_t get_fmt_start(const char* fmt, size_t len)
{
for (size_t i = 0; i < len; i++)
{
if (fmt[i] == '%')
{
return i;
}
}
return len;
}
static size_t get_fmt_len(const char* fmt, size_t len)
{
assert(len >= 2 && fmt[0] == '%');
size_t res = 2;
if (fmt[1] == '.' || fmt[1] == '0')
{
assert(len >= 4 && fmt[2] - '1' < 9);
res += 2;
fmt += 2;
len -= 2;
if (fmt[1] == '1')
{
assert(len >= 3 && fmt[2] - '0' < 7);
res++;
fmt++;
len--;
}
}
if (fmt[1] == 'l')
{
assert(len >= 3);
res++;
fmt++;
len--;
}
if (fmt[1] == 'l')
{
assert(len >= 3);
res++;
fmt++;
len--;
}
return res;
}
static size_t get_fmt_precision(const char* fmt, size_t len)
{
assert(len >= 2);
if (fmt[1] == '.' || fmt[1] == '0')
{
assert(len >= 4 && fmt[2] - '1' < 9);
if (fmt[2] == '1')
{
assert(len >= 5 && fmt[3] - '0' < 7);
return 10 + fmt[3] - '0';
}
return fmt[2] - '0';
}
return 1;
}
template<typename T, bool is_enum = std::is_enum<T>::value>
struct get_fmt
{
static_assert(is_enum, "Unsupported fmt::format argument");
typedef typename std::underlying_type<T>::type underlying_type;
static std::string text(const char* fmt, size_t len, const T& arg)
{
return get_fmt<underlying_type>::text(fmt, len, (underlying_type)arg);
}
};
template<typename T, typename T2>
struct get_fmt<be_t<T, T2>, false>
{
static std::string text(const char* fmt, size_t len, const be_t<T, T2>& arg)
{
return get_fmt<T>::text(fmt, len, arg.value());
}
};
template<>
struct get_fmt<u8>
{
static std::string text(const char* fmt, size_t len, u8 arg)
{
if (fmt[len - 1] == 'x')
{
return to_hex(arg, get_fmt_precision(fmt, len));
}
else if (fmt[len - 1] == 'd')
{
return std::to_string((u32)arg);
}
else
{
throw "Invalid formatting (u8): " + std::string(fmt, len);
}
return{};
}
};
template<>
struct get_fmt<u16>
{
static std::string text(const char* fmt, size_t len, u16 arg)
{
if (fmt[len - 1] == 'x')
{
return to_hex(arg, get_fmt_precision(fmt, len));
}
else if (fmt[len - 1] == 'd')
{
return std::to_string((u32)arg);
}
else
{
throw "Invalid formatting (u16): " + std::string(fmt, len);
}
return{};
}
};
template<>
struct get_fmt<u32>
{
static std::string text(const char* fmt, size_t len, u32 arg)
{
if (fmt[len - 1] == 'x')
{
return to_hex(arg, get_fmt_precision(fmt, len));
}
else if (fmt[len - 1] == 'd')
{
return std::to_string(arg);
}
else
{
throw "Invalid formatting (u32): " + std::string(fmt, len);
}
return{};
}
};
template<>
struct get_fmt<u64>
{
static std::string text(const char* fmt, size_t len, u64 arg)
{
if (fmt[len - 1] == 'x')
{
return to_hex(arg, get_fmt_precision(fmt, len));
}
else if (fmt[len - 1] == 'd')
{
return std::to_string(arg);
}
else
{
throw "Invalid formatting (u64): " + std::string(fmt, len);
}
return{};
}
};
template<>
struct get_fmt<s8>
{
static std::string text(const char* fmt, size_t len, s8 arg)
{
if (fmt[len - 1] == 'x')
{
return to_hex((u8)arg, get_fmt_precision(fmt, len));
}
else if (fmt[len - 1] == 'd')
{
return std::to_string((s32)arg);
}
else
{
throw "Invalid formatting (s8): " + std::string(fmt, len);
}
return{};
}
};
template<>
struct get_fmt<s16>
{
static std::string text(const char* fmt, size_t len, s16 arg)
{
if (fmt[len - 1] == 'x')
{
return to_hex((u16)arg, get_fmt_precision(fmt, len));
}
else if (fmt[len - 1] == 'd')
{
return std::to_string((s32)arg);
}
else
{
throw "Invalid formatting (s16): " + std::string(fmt, len);
}
return{};
}
};
template<>
struct get_fmt<s32>
{
static std::string text(const char* fmt, size_t len, s32 arg)
{
if (fmt[len - 1] == 'x')
{
return to_hex((u32)arg, get_fmt_precision(fmt, len));
}
else if (fmt[len - 1] == 'd')
{
return std::to_string(arg);
}
else
{
throw "Invalid formatting (s32): " + std::string(fmt, len);
}
return{};
}
};
template<>
struct get_fmt<s64>
{
static std::string text(const char* fmt, size_t len, s64 arg)
{
if (fmt[len - 1] == 'x')
{
return to_hex((u64)arg, get_fmt_precision(fmt, len));
}
else if (fmt[len - 1] == 'd')
{
return std::to_string(arg);
}
else
{
throw "Invalid formatting (s64): " + std::string(fmt, len);
}
return{};
}
};
template<>
struct get_fmt<float>
{
static std::string text(const char* fmt, size_t len, float arg)
{
if (fmt[len - 1] == 'x')
{
return to_hex((u32&)arg, get_fmt_precision(fmt, len));
}
else if (fmt[len - 1] == 'f')
{
return std::to_string(arg);
}
else
{
throw "Invalid formatting (float): " + std::string(fmt, len);
}
return{};
}
};
template<>
struct get_fmt<double>
{
static std::string text(const char* fmt, size_t len, double arg)
{
if (fmt[len - 1] == 'x')
{
return to_hex((u64&)arg, get_fmt_precision(fmt, len));
}
else if (fmt[len - 1] == 'f')
{
return std::to_string(arg);
}
else
{
throw "Invalid formatting (double): " + std::string(fmt, len);
}
return{};
}
};
template<>
struct get_fmt<bool>
{
static std::string text(const char* fmt, size_t len, bool arg)
{
if (fmt[len - 1] == 'x')
{
return to_hex(arg, get_fmt_precision(fmt, len));
}
else if (fmt[len - 1] == 'd')
{
return arg ? "1" : "0";
}
else if (fmt[len - 1] == 's')
{
return arg ? "true" : "false";
}
else
{
throw "Invalid formatting (bool): " + std::string(fmt, len);
}
return{};
}
};
template<>
struct get_fmt<char*>
{
static std::string text(const char* fmt, size_t len, char* arg)
{
if (fmt[len - 1] == 's')
{
return arg;
}
else
{
throw "Invalid formatting (char*): " + std::string(fmt, len);
}
return{};
}
};
template<>
struct get_fmt<const char*>
{
static std::string text(const char* fmt, size_t len, const char* arg)
{
if (fmt[len - 1] == 's')
{
return arg;
}
else
{
throw "Invalid formatting (const char*): " + std::string(fmt, len);
}
return{};
}
};
//template<size_t size>
//struct get_fmt<char[size], false>
//{
// static std::string text(const char* fmt, size_t len, const char(&arg)[size])
// {
// if (fmt[len - 1] == 's')
// {
// return std::string(arg, size);
// }
// else
// {
// throw "Invalid formatting (char[size]): " + std::string(fmt, len);
// }
// return{};
// }
//};
//template<size_t size>
//struct get_fmt<const char[size], false>
//{
// static std::string text(const char* fmt, size_t len, const char(&arg)[size])
// {
// if (fmt[len - 1] == 's')
// {
// return std::string(arg, size);
// }
// else
// {
// throw "Invalid formatting (const char[size]): " + std::string(fmt, len);
// }
// return{};
// }
//};
template<>
struct get_fmt<std::string>
{
static std::string text(const char* fmt, size_t len, const std::string& arg)
{
if (fmt[len - 1] == 's')
{
return arg;
}
else
{
throw "Invalid formatting (std::string): " + std::string(fmt, len);
}
return{};
}
};
static std::string format(const char* fmt, size_t len)
{
const size_t fmt_start = get_fmt_start(fmt, len);
assert(fmt_start == len);
return std::string(fmt, len);
}
template<typename T, typename... Args>
static std::string format(const char* fmt, size_t len, const T& arg, Args... args)
{
const size_t fmt_start = get_fmt_start(fmt, len);
const size_t fmt_len = get_fmt_len(fmt + fmt_start, len - fmt_start);
const size_t fmt_end = fmt_start + fmt_len;
return std::string(fmt, fmt_start) + get_fmt<T>::text(fmt + fmt_start, fmt_len, arg) + format(fmt + fmt_end, len - fmt_end, args...);
}
};
// formatting function with very limited functionality (compared to printf-like formatting) and be_t<> support
/*
Supported types:
u8, s8 (%x, %d)
u16, s16 (%x, %d)
u32, s32 (%x, %d)
u64, s64 (%x, %d)
float (%x, %f)
double (%x, %f)
bool (%x, %d, %s)
char*, const char*, std::string (%s)
be_t<> of any appropriate type in this list
enum of any appropriate type in this list
External specializations (can be found in another headers):
vm::ps3::ptr (vm_ptr.h) (with appropriate address type, using .addr() can be avoided)
vm::ps3::bptr (vm_ptr.h)
vm::psv::ptr (vm_ptr.h)
vm::ps3::ref (vm_ref.h)
vm::ps3::bref (vm_ref.h)
vm::psv::ref (vm_ref.h)
Supported formatting:
%d - decimal; only basic std::to_string() functionality
%x - hexadecimal; %.8x - hexadecimal with the precision (from .2 to .16)
%s - string; generates "true" or "false" for bool
%f - floating point; only basic std::to_string() functionality
Other features are not supported.
*/
template<typename... Args>
__forceinline static std::string format(const char* fmt, Args... args)
{
return detail::format(fmt, strlen(fmt), args...);
}
//convert a wxString to a std::string encoded in utf8
//CAUTION, only use this to interface with wxWidgets classes
std::string ToUTF8(const wxString& right);
//convert a std::string encoded in utf8 to a wxString
//CAUTION, only use this to interface with wxWidgets classes
wxString FromUTF8(const std::string& right);
//TODO: remove this after every snippet that uses it is gone
//WARNING: not fully compatible with CmpNoCase from wxString
int CmpNoCase(const std::string& a, const std::string& b);
//TODO: remove this after every snippet that uses it is gone
//WARNING: not fully compatible with Replace from wxString
void Replace(std::string &str, const std::string &searchterm, const std::string& replaceterm);
std::vector<std::string> rSplit(const std::string& source, const std::string& delim);
std::vector<std::string> split(const std::string& source, std::initializer_list<std::string> separators, bool is_skip_empty = true);
std::string merge(std::vector<std::string> source, const std::string& separator);
std::string merge(std::initializer_list<std::vector<std::string>> sources, const std::string& separator);
std::string tolower(std::string source);
}