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| 1 | daniel-mar | 1 | unit ZMWUtils19; |
| 2 | |||
| 3 | (* |
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| 4 | ZMWUtils19.pas - Windows file functions supporting Unicode names |
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| 5 | Copyright (C) 2009, 2010 by Russell J. Peters, Roger Aelbrecht, |
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| 6 | Eric W. Engler and Chris Vleghert. |
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| 7 | |||
| 8 | This file is part of TZipMaster Version 1.9. |
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| 9 | |||
| 10 | TZipMaster is free software: you can redistribute it and/or modify |
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| 11 | it under the terms of the GNU Lesser General Public License as published by |
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| 12 | the Free Software Foundation, either version 3 of the License, or |
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| 13 | (at your option) any later version. |
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| 14 | |||
| 15 | TZipMaster is distributed in the hope that it will be useful, |
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| 16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 18 | GNU Lesser General Public License for more details. |
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| 19 | |||
| 20 | You should have received a copy of the GNU Lesser General Public License |
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| 21 | along with TZipMaster. If not, see <http://www.gnu.org/licenses/>. |
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| 22 | |||
| 23 | contact: problems@delphizip.org (include ZipMaster in the subject). |
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| 24 | updates: http://www.delphizip.org |
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| 25 | DelphiZip maillist subscribe at http://www.freelists.org/list/delphizip |
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| 26 | |||
| 27 | modified 2008-08-28 |
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| 28 | ---------------------------------------------------------------------------*) |
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| 29 | interface |
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| 30 | uses |
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| 31 | Windows, SysUtils; |
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| 32 | |||
| 33 | function FindLastW(const ws: widestring; const wc: widechar): integer; |
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| 34 | function FindFirstW(const ws: widestring; const wc: widechar): integer; |
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| 35 | function ExtractFilePathW(const path: widestring): widestring; |
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| 36 | function DelimitPathW(const Path: widestring; Sep: Boolean): widestring; |
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| 37 | function DirExistsW(const Fname: WideString): boolean; |
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| 38 | function ForceDirectoryW(const Dir: widestring): boolean; |
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| 39 | function FileCreateW(const fname: widestring): cardinal; |
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| 40 | |||
| 41 | implementation |
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| 42 | uses |
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| 43 | ZMStructs19; |
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| 44 | |||
| 45 | function FindLastW(const ws: widestring; const wc: widechar): integer; |
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| 46 | var |
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| 47 | i: integer; |
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| 48 | begin |
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| 49 | Result := -1; |
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| 50 | for i := 1 to Length(ws) - 1 do |
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| 51 | if ws[i] = wc then |
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| 52 | begin |
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| 53 | Result := i; |
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| 54 | end; |
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| 55 | end; |
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| 56 | |||
| 57 | function FindFirstW(const ws: widestring; const wc: widechar): integer; |
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| 58 | begin |
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| 59 | for Result := 1 to Length(ws) - 1 do |
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| 60 | if ws[Result] = wc then |
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| 61 | Exit; |
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| 62 | Result := -1; |
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| 63 | end; |
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| 64 | |||
| 65 | function ExtractFilePathW(const path: widestring): widestring; |
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| 66 | var |
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| 67 | d, c: integer; |
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| 68 | begin |
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| 69 | Result := ''; |
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| 70 | c := FindFirstW(path, ':'); |
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| 71 | d := FindLastW(path, PathDelim); |
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| 72 | if (d > c) and (d >= 1) then |
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| 73 | Result := Copy(path, 1, pred(d)); |
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| 74 | end; |
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| 75 | |||
| 76 | function DelimitPathW(const Path: widestring; Sep: Boolean): widestring; |
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| 77 | begin |
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| 78 | Result := Path; |
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| 79 | if Length(Path) = 0 then |
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| 80 | begin |
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| 81 | if Sep then |
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| 82 | Result := PathDelim{'\'}; |
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| 83 | exit; |
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| 84 | end; |
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| 85 | // if (AnsiLastChar(Path)^ = PathDelim) <> Sep then |
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| 86 | if (Path[Length(Path)] = PathDelim) <> Sep then |
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| 87 | begin |
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| 88 | if Sep then |
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| 89 | Result := Path + PathDelim |
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| 90 | else |
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| 91 | Result := Copy(Path, 1, pred(Length(Path))); |
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| 92 | end; |
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| 93 | end; |
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| 94 | |||
| 95 | function DirExistsW(const Fname: WideString): boolean; |
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| 96 | var |
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| 97 | Code: DWORD; |
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| 98 | begin |
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| 99 | Result := True; // current directory exists |
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| 100 | |||
| 101 | if Fname <> '' then |
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| 102 | begin |
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| 103 | Code := GetFileAttributesW(PWideChar(Fname)); |
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| 104 | Result := (Code <> MAX_UNSIGNED) and |
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| 105 | ((FILE_ATTRIBUTE_DIRECTORY and Code) <> 0); |
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| 106 | end; |
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| 107 | end; |
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| 108 | |||
| 109 | function ForceDirectoryW(const Dir: widestring): boolean; |
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| 110 | var |
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| 111 | sDir: widestring; |
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| 112 | begin |
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| 113 | Result := True; |
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| 114 | if Dir <> '' then |
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| 115 | begin |
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| 116 | sDir := DelimitPathW(Dir, False); |
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| 117 | if DirExistsW(sDir) or (ExtractFilePathW(sDir) = sDir) then |
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| 118 | exit; // avoid 'c:\xyz:\' problem. |
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| 119 | |||
| 120 | if ForceDirectoryW(ExtractFilePathW(sDir)) then |
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| 121 | Result := CreateDirectoryW(PWideChar(sDir), nil) |
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| 122 | else |
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| 123 | Result := False; |
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| 124 | end; |
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| 125 | end; |
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| 126 | |||
| 127 | function FileCreateW(const fname: widestring): cardinal; |
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| 128 | begin |
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| 129 | Result := CreateFileW(pWideChar(fname), GENERIC_WRITE, 0, nil, CREATE_ALWAYS, |
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| 130 | FILE_ATTRIBUTE_NORMAL, 0); |
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| 131 | end; |
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| 132 | |||
| 133 | end. |