using System;
namespace PKHeX.Core;
///
/// Logic for converting a between the various generation specific encoding formats.
///
public static class StringConverter
{
///
/// Converts bytes to a string according to the input parameters.
///
/// Encoded data
/// Generation string format
/// Encoding is Japanese
/// Encoding is Big Endian
/// Decoded string.
public static string GetString(ReadOnlySpan data, int generation, bool jp, bool isBigEndian = false) => generation switch
{
3 when isBigEndian => StringConverter3GC.GetString(data),
4 when isBigEndian => StringConverter4GC.GetString(data),
1 or 2 => StringConverter12.GetString(data, jp),
3 => StringConverter3.GetString(data, jp),
4 => StringConverter4.GetString(data),
5 => StringConverter5.GetString(data),
6 => StringConverter6.GetString(data),
7 => StringConverter7.GetString(data),
8 => StringConverter8.GetString(data),
9 => StringConverter8.GetString(data),
_ => throw new ArgumentOutOfRangeException(nameof(generation)),
};
///
/// Gets the bytes for a Generation specific string according to the input parameters.
///
/// Span of bytes to write encoded string data
/// Decoded string.
/// Maximum length of the input
/// Buffer pre-formatting option
/// Generation string format
/// Encoding is Japanese
/// Encoding is Big Endian
/// Language specific conversion (Chinese)
/// Count of bytes written to the .
public static int SetString(Span destBuffer, ReadOnlySpan value, int maxLength, StringConverterOption option,
int generation, bool jp, bool isBigEndian, int language = 0) => generation switch
{
3 when isBigEndian => StringConverter3GC.SetString(destBuffer, value, maxLength, option),
4 when isBigEndian => StringConverter4GC.SetString(destBuffer, value, maxLength, option),
1 or 2 => StringConverter12.SetString(destBuffer, value, maxLength, jp, option),
3 => StringConverter3.SetString(destBuffer, value, maxLength, jp, option),
4 => StringConverter4.SetString(destBuffer, value, maxLength, option),
5 => StringConverter5.SetString(destBuffer, value, maxLength, option),
6 => StringConverter6.SetString(destBuffer, value, maxLength, option),
7 => StringConverter7.SetString(destBuffer, value, maxLength, language, option),
8 => StringConverter8.SetString(destBuffer, value, maxLength, option),
9 => StringConverter8.SetString(destBuffer, value, maxLength, option),
_ => throw new ArgumentOutOfRangeException(nameof(generation)),
};
///
/// Converts full width to single width
///
/// Input character to sanitize.
internal static char SanitizeChar(char chr) => chr switch
{
'\uE08F' => '♀',
'\uE08E' => '♂',
'\u246E' => '♀',
'\u246D' => '♂',
_ => chr,
};
///
/// Converts full width to half width when appropriate
///
/// Input character to set back to data
/// Checks if the overall string is full-width
internal static char UnSanitizeChar(char chr, bool fullWidth = false)
{
if (fullWidth) // jp/ko/zh strings
return chr; // keep as full width
return chr switch
{
'\u2640' => '\uE08F',
'\u2642' => '\uE08E',
_ => chr,
};
}
///
/// Converts full width to half width when appropriate, for Gen5 and prior.
///
/// Input character to set back to data
internal static char UnSanitizeChar5(char chr) => chr switch
{
'\u2640' => '\u246E',
'\u2642' => '\u246D',
_ => chr,
};
internal static bool GetIsFullWidthString(ReadOnlySpan str)
{
foreach (var c in str)
{
if (c >> 12 is (0 or 0xE))
continue;
if (c is '\u2640' or '\u2642') // ♀♂
continue;
return true;
}
return false;
}
public static bool HasEastAsianScriptCharacters(ReadOnlySpan str)
{
foreach (var c in str)
{
if (c is >= '\u4E00' and <= '\u9FFF')
return true;
}
return false;
}
}