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mystring.cpp
50 lines (45 loc) · 1.58 KB
/
mystring.cpp
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/*
FilterLines plugin for FAR Manager
Copyright (C) 2009 Igor Yudincev
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <windows.h>
//âåðíóòü äëèíó ñòðîêè áåç çàâåðøàþùåãî íóëåâîãî ñèìâîëà
int Length(wchar_t *str)
{
if (str == NULL) return 0;
HANDLE hHeap = GetProcessHeap();
return ((int)HeapSize(hHeap, 0, str) / sizeof(wchar_t)) - 1;
}
//âûäåëèòü ïàìÿòü ïîä len+1 ñèìâîëîâ; åñëè len=0, òî îñâîáîäèòü ïàìÿòü
bool SetLength(wchar_t **pStr, int len)
{
HANDLE hHeap = GetProcessHeap();
if (*pStr==NULL) {
if (len > 0) {
*pStr = (wchar_t*)HeapAlloc(hHeap, 0, (len + 1) * sizeof(wchar_t));
if (*pStr == NULL) return false;
}
return true;
}
//*pStr!=NULL
if (len > 0) {
*pStr = (wchar_t*)HeapReAlloc(hHeap, 0, *pStr, (len+1)*sizeof(wchar_t));
if (*pStr == NULL) return false;
}
else {
HeapFree(hHeap, 0, *pStr);
*pStr = NULL;
}
return true;
}