diff options
| -rw-r--r-- | unicode/src/base/UCommon.pas | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/unicode/src/base/UCommon.pas b/unicode/src/base/UCommon.pas index 1bee9d29..187c21fb 100644 --- a/unicode/src/base/UCommon.pas +++ b/unicode/src/base/UCommon.pas @@ -44,6 +44,25 @@ uses UPath; type + TStringDynArray = array of string; + +const + SepWhitespace = [#9, #10, #13, ' ']; // tab, lf, cr, space + +{** + * Splits a string into pieces separated by Separators. + * MaxCount specifies the max. number of pieces. If it is <= 0 the number is + * not limited. If > 0 the last array element will hold the rest of the string + * (with leading separators removed). + * + * Examples: + * SplitString(' split me now ', 0) -> ['split', 'me', 'now'] + * SplitString(' split me now ', 1) -> ['split', 'me now'] + *} +function SplitString(const Str: string; MaxCount: integer = 0; Separators: TSysCharSet = SepWhitespace): TStringDynArray; + + +type TMessageType = (mtInfo, mtError); procedure ShowMessage(const msg: string; msgType: TMessageType = mtInfo); @@ -93,6 +112,58 @@ uses UMain, UUnicodeUtils; +function SplitString(const Str: string; MaxCount: integer; Separators: TSysCharSet): TStringDynArray; + + {* + * Adds Str[StartPos..Endpos-1] to the result array. + *} + procedure AddSplit(StartPos, EndPos: integer); + begin + SetLength(Result, Length(Result)+1); + Result[High(Result)] := Copy(Str, StartPos, EndPos-StartPos); + end; + +var + I: integer; + Start: integer; + Last: integer; +begin + Start := 0; + SetLength(Result, 0); + + for I := 1 to Length(Str) do + begin + if (Str[I] in Separators) then + begin + // end of component found + if (Start > 0) then + begin + AddSplit(Start, I); + Start := 0; + end; + end + else if (Start = 0) then + begin + // mark beginning of component + Start := I; + // check if this is the last component + if (Length(Result) = MaxCount-1) then + begin + // find last non-separator char + Last := Length(Str); + while (Str[Last] in Separators) do + Dec(Last); + // add component up to last non-separator + AddSplit(Start, Last); + Exit; + end; + end; + end; + + // last component + if (Start > 0) then + AddSplit(Start, Length(Str)+1); +end; // data used by the ...Locale() functions {$IF Defined(Linux) or Defined(FreeBSD)} |