/// <summary>
/// endWithが見つかるまで読み込む。始点と終端のチェックは呼び出し側で行うこと。
/// エスケープあり。
/// </summary>
/// <param name="st"></param>
/// <returns></returns>
public static string ReadString(StringStream st, StrEndWith endWith)
{
StringBuilder buffer = new StringBuilder(100);
while (true)
{
switch (st.Current)
{
case '\0':
goto end;
case '\"':
if (endWith == StrEndWith.DoubleQuotation)
{
goto end;
}
break;
case '\'':
if (endWith == StrEndWith.SingleQuotation)
{
goto end;
}
break;
case ',':
if ((endWith == StrEndWith.Comma) || (endWith == StrEndWith.LeftParenthesis_Bracket_Comma_Semicolon))
{
goto end;
}
break;
case '(':
case '[':
case ';':
if (endWith == StrEndWith.LeftParenthesis_Bracket_Comma_Semicolon)
{
goto end;
}
break;
case '\\': //エスケープ処理
st.ShiftNext(); //\を読み飛ばす
switch (st.Current)
{
case StringStream.EndOfString:
throw new CodeEE("エスケープ文字\\の後に文字がありません");
case '\n': break;
case 's': buffer.Append(' '); break;
case 'S': buffer.Append(' '); break;
case 't': buffer.Append('\t'); break;
case 'n': buffer.Append('\n'); break;
default: buffer.Append(st.Current); break;
}
st.ShiftNext(); //\の次の文字を読み飛ばす
continue;
}
buffer.Append(st.Current);
st.ShiftNext();
}
end:
return(buffer.ToString());
}
/// <summary>
/// endWithが見つかるまで読み込む。始点と終端のチェックは呼び出し側で行うこと。
/// エスケープあり。
/// </summary>
/// <param name="st"></param>
/// <returns></returns>
public static string ReadString(StringStream st, StrEndWith endWith)
{
StringBuilder buffer = new StringBuilder(100);
while (true)
{
switch (st.Current)
{
case '\0':
goto end;
case '\"':
if (endWith == StrEndWith.DoubleQuotation)
goto end;
break;
case ',':
if ((endWith == StrEndWith.Comma) || (endWith == StrEndWith.LeftParenthesis_Bracket_Comma_Semicolon))
goto end;
break;
case '(':
case '[':
case ';':
if (endWith == StrEndWith.LeftParenthesis_Bracket_Comma_Semicolon)
goto end;
break;
case '\\'://エスケープ処理
st.ShiftNext();//\を読み飛ばす
switch (st.Current)
{
case StringStream.EndOfString:
throw new CodeEE("エスケープ文字\\の後に文字がありません");
case '\n': break;
case 's': buffer.Append(' '); break;
case 'S': buffer.Append(' '); break;
case 't': buffer.Append('\t'); break;
case 'n': buffer.Append('\n'); break;
default: buffer.Append(st.Current); break;
}
st.ShiftNext();//\の次の文字を読み飛ばす
continue;
}
buffer.Append(st.Current);
st.ShiftNext();
}
end:
return buffer.ToString();
}
