dlls/shell32/shellstring.c

   1 /*
   2  * Copyright 2000 Juergen Schmied
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include <string.h>
  20 #include <stdarg.h>
  21 #include <stdio.h>
  22 #include <ctype.h>
  23 #include <stdlib.h>
  24
  25 #define NONAMELESSUNION
  26
  27 #include "windef.h"
  28 #include "winbase.h"
  29 #include "winnls.h"
  30 #include "wingdi.h"
  31 #include "winuser.h"
  32 #include "winreg.h"
  33
  34 #include "shlobj.h"
  35 #include "shlwapi.h"
  36 #include "shell32_main.h"
  37 #include "undocshell.h"
  38 #include "wine/unicode.h"
  39 #include "wine/debug.h"
  40
  41 WINE_DEFAULT_DEBUG_CHANNEL(shell);
  42
  43 /************************* STRRET functions ****************************/
  44
  45 static const char *debugstr_strret(STRRET *s)
  46 {
  47     switch (s->uType)
  48     {
  49         case STRRET_WSTR:
  50             return "STRRET_WSTR";
  51         case STRRET_CSTR:
  52             return "STRRET_CSTR";
  53         case STRRET_OFFSET:
  54             return "STRRET_OFFSET";
  55         default:
  56             return "STRRET_???";
  57     }
  58 }
  59
  60 BOOL WINAPI StrRetToStrNA(LPSTR dest, DWORD len, LPSTRRET src, const ITEMIDLIST *pidl)
  61 {
  62     TRACE("dest=%p len=0x%x strret=%p(%s) pidl=%p\n", dest, len, src, debugstr_strret(src), pidl);
  63
  64     if (!dest)
  65         return FALSE;
  66
  67     switch (src->uType)
  68     {
  69         case STRRET_WSTR:
  70             WideCharToMultiByte(CP_ACP, 0, src->u.pOleStr, -1, dest, len, NULL, NULL);
  71             CoTaskMemFree(src->u.pOleStr);
  72             break;
  73         case STRRET_CSTR:
  74             lstrcpynA(dest, src->u.cStr, len);
  75             break;
  76         case STRRET_OFFSET:
  77             lstrcpynA(dest, ((LPCSTR)&pidl->mkid)+src->u.uOffset, len);
  78             break;
  79         default:
  80             FIXME("unknown type %u!\n", src->uType);
  81             if (len)
  82                 *dest = '\0';
  83             return FALSE;
  84     }
  85     TRACE("-- %s\n", debugstr_a(dest) );
  86     return TRUE;
  87 }
  88
  89 /************************************************************************/
  90
  91 BOOL WINAPI StrRetToStrNW(LPWSTR dest, DWORD len, LPSTRRET src, const ITEMIDLIST *pidl)
  92 {
  93     TRACE("dest=%p len=0x%x strret=%p(%s) pidl=%p\n", dest, len, src, debugstr_strret(src), pidl);
  94
  95     if (!dest)
  96         return FALSE;
  97
  98     switch (src->uType)
  99     {
 100         case STRRET_WSTR:
 101             lstrcpynW(dest, src->u.pOleStr, len);
 102             CoTaskMemFree(src->u.pOleStr);
 103             break;
 104         case STRRET_CSTR:
 105             if (!MultiByteToWideChar(CP_ACP, 0, src->u.cStr, -1, dest, len) && len)
 106                 dest[len-1] = 0;
 107             break;
 108         case STRRET_OFFSET:
 109             if (!MultiByteToWideChar(CP_ACP, 0, ((LPCSTR)&pidl->mkid)+src->u.uOffset, -1, dest, len)
 110                     && len)
 111                 dest[len-1] = 0;
 112             break;
 113         default:
 114             FIXME("unknown type %u!\n", src->uType);
 115             if (len)
 116                 *dest = '\0';
 117             return FALSE;
 118     }
 119     return TRUE;
 120 }
 121
 122
 123 /*************************************************************************
 124  * StrRetToStrN    [SHELL32.96]
 125  *
 126  * converts a STRRET to a normal string
 127  *
 128  * NOTES
 129  *  the pidl is for STRRET OFFSET
 130  */
 131 BOOL WINAPI StrRetToStrNAW(LPVOID dest, DWORD len, LPSTRRET src, const ITEMIDLIST *pidl)
 132 {
 133     if(SHELL_OsIsUnicode())
 134         return StrRetToStrNW(dest, len, src, pidl);
 135     else
 136         return StrRetToStrNA(dest, len, src, pidl);
 137 }
 138
 139 /************************* OLESTR functions ****************************/
 140
 141 /************************************************************************
 142  *      StrToOleStr                     [SHELL32.163]
 143  *
 144  */
 145 static int StrToOleStrA (LPWSTR lpWideCharStr, LPCSTR lpMultiByteString)
 146 {
 147         TRACE("(%p, %p %s)\n",
 148         lpWideCharStr, lpMultiByteString, debugstr_a(lpMultiByteString));
 149
 150         return MultiByteToWideChar(CP_ACP, 0, lpMultiByteString, -1, lpWideCharStr, MAX_PATH);
 151
 152 }
 153 static int StrToOleStrW (LPWSTR lpWideCharStr, LPCWSTR lpWString)
 154 {
 155         TRACE("(%p, %p %s)\n",
 156         lpWideCharStr, lpWString, debugstr_w(lpWString));
 157
 158         strcpyW (lpWideCharStr, lpWString );
 159         return strlenW(lpWideCharStr);
 160 }
 161
 162 BOOL WINAPI StrToOleStrAW (LPWSTR lpWideCharStr, LPCVOID lpString)
 163 {
 164         if (SHELL_OsIsUnicode())
 165           return StrToOleStrW (lpWideCharStr, lpString);
 166         return StrToOleStrA (lpWideCharStr, lpString);
 167 }
 168
 169 /*************************************************************************
 170  * StrToOleStrN                                 [SHELL32.79]
 171  *  lpMulti, nMulti, nWide [IN]
 172  *  lpWide [OUT]
 173  */
 174 static BOOL StrToOleStrNA (LPWSTR lpWide, INT nWide, LPCSTR lpStrA, INT nStr)
 175 {
 176         TRACE("(%p, %x, %s, %x)\n", lpWide, nWide, debugstr_an(lpStrA,nStr), nStr);
 177         return MultiByteToWideChar (CP_ACP, 0, lpStrA, nStr, lpWide, nWide);
 178 }
 179 static BOOL StrToOleStrNW (LPWSTR lpWide, INT nWide, LPCWSTR lpStrW, INT nStr)
 180 {
 181         TRACE("(%p, %x, %s, %x)\n", lpWide, nWide, debugstr_wn(lpStrW, nStr), nStr);
 182
 183         if (lstrcpynW (lpWide, lpStrW, nWide))
 184         { return lstrlenW (lpWide);
 185         }
 186         return FALSE;
 187 }
 188
 189 BOOL WINAPI StrToOleStrNAW (LPWSTR lpWide, INT nWide, LPCVOID lpStr, INT nStr)
 190 {
 191         if (SHELL_OsIsUnicode())
 192           return StrToOleStrNW (lpWide, nWide, lpStr, nStr);
 193         return StrToOleStrNA (lpWide, nWide, lpStr, nStr);
 194 }
 195
 196 /*************************************************************************
 197  * OleStrToStrN                                 [SHELL32.78]
 198  */
 199 static BOOL OleStrToStrNA (LPSTR lpStr, INT nStr, LPCWSTR lpOle, INT nOle)
 200 {
 201         TRACE("(%p, %x, %s, %x)\n", lpStr, nStr, debugstr_wn(lpOle,nOle), nOle);
 202         return WideCharToMultiByte (CP_ACP, 0, lpOle, nOle, lpStr, nStr, NULL, NULL);
 203 }
 204
 205 static BOOL OleStrToStrNW (LPWSTR lpwStr, INT nwStr, LPCWSTR lpOle, INT nOle)
 206 {
 207         TRACE("(%p, %x, %s, %x)\n", lpwStr, nwStr, debugstr_wn(lpOle,nOle), nOle);
 208
 209         if (lstrcpynW ( lpwStr, lpOle, nwStr))
 210         { return lstrlenW (lpwStr);
 211         }
 212         return FALSE;
 213 }
 214
 215 BOOL WINAPI OleStrToStrNAW (LPVOID lpOut, INT nOut, LPCVOID lpIn, INT nIn)
 216 {
 217         if (SHELL_OsIsUnicode())
 218           return OleStrToStrNW (lpOut, nOut, lpIn, nIn);
 219         return OleStrToStrNA (lpOut, nOut, lpIn, nIn);
 220 }
 221
 222
 223 /*************************************************************************
 224  * CheckEscapesA             [SHELL32.@]
 225  *
 226  * Checks a string for special characters which are not allowed in a path
 227  * and encloses it in quotes if that is the case.
 228  *
 229  * PARAMS
 230  *  string     [I/O] string to check and on return eventually quoted
 231  *  len        [I]   length of string
 232  *
 233  * RETURNS
 234  *  length of actual string
 235  *
 236  * NOTES
 237  *  Not really sure if this function returns actually a value at all.
 238  */
 239 DWORD WINAPI CheckEscapesA(
 240         LPSTR   string,         /* [I/O]   string to check ??*/
 241         DWORD   len)            /* [I]      is 0 */
 242 {
 243         LPWSTR wString;
 244         DWORD ret = 0;
 245
 246         TRACE("(%s %d)\n", debugstr_a(string), len);
 247         wString = LocalAlloc(LPTR, len * sizeof(WCHAR));
 248         if (wString)
 249         {
 250           MultiByteToWideChar(CP_ACP, 0, string, len, wString, len);
 251           ret = CheckEscapesW(wString, len);
 252           WideCharToMultiByte(CP_ACP, 0, wString, len, string, len, NULL, NULL);
 253           LocalFree(wString);
 254         }
 255         return ret;
 256 }
 257
 258 static const WCHAR strEscapedChars[] = {' ','"',',',';','^',0};
 259
 260 /*************************************************************************
 261  * CheckEscapesW             [SHELL32.@]
 262  *
 263  * See CheckEscapesA.
 264  */
 265 DWORD WINAPI CheckEscapesW(
 266         LPWSTR  string,
 267         DWORD   len)
 268 {
 269         DWORD size = lstrlenW(string);
 270         LPWSTR s, d;
 271
 272         TRACE("%s, %u.\n", debugstr_w(string), len);
 273
 274         if (StrPBrkW(string, strEscapedChars) && size + 2 <= len)
 275         {
 276           s = &string[size - 1];
 277           d = &string[size + 2];
 278           *d-- = 0;
 279           *d-- = '"';
 280           for (;d > string;)
 281             *d-- = *s--;
 282           *d = '"';
 283           return size + 2;
 284         }
 285         return size;
 286 }