2 * RichEdit - string operations
4 * Copyright 2004 by Krzysztof Foltman
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 WINE_DEFAULT_DEBUG_CHANNEL(richedit);
25 int ME_GetOptimalBuffer(int nLen)
27 return ((2*nLen+1)+128)&~63;
30 ME_String *ME_MakeString(LPCWSTR szText)
32 ME_String *s = ALLOC_OBJ(ME_String);
33 s->nLen = lstrlenW(szText);
34 s->nBuffer = ME_GetOptimalBuffer(s->nLen+1);
35 s->szData = ALLOC_N_OBJ(WCHAR, s->nBuffer);
36 lstrcpyW(s->szData, szText);
40 ME_String *ME_MakeStringN(LPCWSTR szText, int nMaxChars)
42 ME_String *s = ALLOC_OBJ(ME_String);
44 for (i=0; i<nMaxChars && szText[i]; i++)
47 s->nBuffer = ME_GetOptimalBuffer(s->nLen+1);
48 s->szData = ALLOC_N_OBJ(WCHAR, s->nBuffer);
49 lstrcpynW(s->szData, szText, s->nLen+1);
53 ME_String *ME_StrDup(ME_String *s)
55 return ME_MakeStringN(s->szData, s->nLen);
58 void ME_DestroyString(ME_String *s)
64 void ME_AppendString(ME_String *s1, ME_String *s2)
66 if (s1->nLen+s2->nLen+1 <= s1->nBuffer) {
67 lstrcpyW(s1->szData+s1->nLen, s2->szData);
73 s1->nBuffer = ME_GetOptimalBuffer(s1->nLen+s2->nLen+1);
75 buf = ALLOC_N_OBJ(WCHAR, s1->nBuffer);
76 lstrcpyW(buf, s1->szData);
77 lstrcpyW(buf+s1->nLen, s2->szData);
84 ME_String *ME_ConcatString(ME_String *s1, ME_String *s2)
86 ME_String *s = ALLOC_OBJ(ME_String);
87 s->nLen = s1->nLen+s2->nLen;
88 s->nBuffer = ME_GetOptimalBuffer(s1->nLen+s2->nLen+1);
89 s->szData = ALLOC_N_OBJ(WCHAR, s->nBuffer);
90 lstrcpyW(s->szData, s1->szData);
91 lstrcpyW(s->szData+s1->nLen, s2->szData);
95 ME_String *ME_VSplitString(ME_String *orig, int charidx)
99 /*if (charidx<0) charidx = 0;
100 if (charidx>orig->nLen) charidx = orig->nLen;
103 assert(charidx<=orig->nLen);
105 s = ME_MakeString(orig->szData+charidx);
106 orig->nLen = charidx;
107 orig->szData[charidx] = L'\0';
111 int ME_IsWhitespaces(ME_String *s)
113 /* FIXME multibyte */
114 WCHAR *pos = s->szData;
115 while(ME_IsWSpace(*pos++))
124 int ME_IsSplitable(ME_String *s)
126 WCHAR *pos = s->szData;
128 while(ME_IsWSpace(*pos++))
131 while((ch = *pos++) != 0)
139 /* FIXME multibyte */
141 int ME_CalcSkipChars(ME_String *s)
144 while(cnt < s->nLen && s->szData[s->nLen-1-cnt]==' ')
150 int ME_StrLen(ME_String *s) {
154 int ME_StrVLen(ME_String *s) {
158 /* FIXME we use widechars, not multibytes, inside, no need for complex logic anymore */
159 int ME_StrRelPos(ME_String *s, int nVChar, int *pRelChars)
161 TRACE("%s,%d,&%d\n", debugstr_w(s->szData), nVChar, *pRelChars);
164 if (!*pRelChars) return nVChar;
168 while(nVChar<s->nLen && *pRelChars>0)
176 while(nVChar>0 && *pRelChars<0)
184 int ME_StrRelPos2(ME_String *s, int nVChar, int nRelChars)
186 return ME_StrRelPos(s, nVChar, &nRelChars);
189 int ME_VPosToPos(ME_String *s, int nVPos)
200 if (s->szData[i]=='\\') i++;
208 int ME_PosToVPos(ME_String *s, int nPos)
212 return ME_StrRelPos2(s, 0, nPos);
215 void ME_StrDeleteV(ME_String *s, int nVChar, int nChars)
219 assert(nVChar >=0 && nVChar <= s->nLen);
221 assert(nVChar+nChars <= s->nLen);
223 end_ofs = ME_StrRelPos2(s, nVChar, nChars);
224 assert(end_ofs <= s->nLen);
225 memmove(s->szData+nVChar, s->szData+end_ofs, 2*(s->nLen+1-end_ofs));
226 s->nLen -= (end_ofs - nVChar);
229 int ME_GetCharFwd(ME_String *s, int nPos)
233 assert(nPos < ME_StrLen(s));
235 nVPos = ME_StrRelPos2(s, nVPos, nPos);
238 return s->szData[nVPos];
242 int ME_GetCharBack(ME_String *s, int nPos)
244 int nVPos = ME_StrVLen(s);
246 assert(nPos < ME_StrLen(s));
248 nVPos = ME_StrRelPos2(s, nVPos, -nPos);
251 return s->szData[nVPos];
255 int ME_FindNonWhitespaceV(ME_String *s, int nVChar) {
257 for (i = nVChar; i<s->nLen && ME_IsWSpace(s->szData[i]); i++)
263 /* note: returns offset of the first trailing whitespace */
264 int ME_ReverseFindNonWhitespaceV(ME_String *s, int nVChar) {
266 for (i = nVChar; i>0 && ME_IsWSpace(s->szData[i-1]); i--)
272 /* note: returns offset of the first trailing nonwhitespace */
273 int ME_ReverseFindWhitespaceV(ME_String *s, int nVChar) {
275 for (i = nVChar; i>0 && !ME_IsWSpace(s->szData[i-1]); i--)
281 LPWSTR ME_ToUnicode(HWND hWnd, LPVOID psz)
283 if (IsWindowUnicode(hWnd))
287 int nChars = MultiByteToWideChar(CP_ACP, 0, (char *)psz, -1, NULL, 0);
288 if((tmp = ALLOC_N_OBJ(WCHAR, nChars)) != NULL)
289 MultiByteToWideChar(CP_ACP, 0, (char *)psz, -1, tmp, nChars);
294 void ME_EndToUnicode(HWND hWnd, LPVOID psz)
296 if (IsWindowUnicode(hWnd))
300 LPSTR ME_ToAnsi(HWND hWnd, LPVOID psz)
302 if (!IsWindowUnicode(hWnd))
306 int nChars = WideCharToMultiByte(CP_ACP, 0, (WCHAR *)psz, -1, NULL, 0, NULL, NULL);
307 if((tmp = ALLOC_N_OBJ(char, nChars)) != NULL)
308 WideCharToMultiByte(CP_ACP, 0, (WCHAR *)psz, -1, tmp, nChars, NULL, NULL);
313 void ME_EndToAnsi(HWND hWnd, LPVOID psz)
315 if (!IsWindowUnicode(hWnd))