99 lines
2.3 KiB
C++
99 lines
2.3 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "common/str.h"
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#include "bagel/boflib/string_functions.h"
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namespace Bagel {
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int strCharCount(const char *str, char c) {
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assert(str != nullptr);
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int n = 0;
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while (*str != '\0') {
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if (*str++ == c)
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n++;
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}
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return n;
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}
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char *strreplaceChar(char *str, char cOld, char cNew) {
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char *p = str;
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// Can't access a nullptr pointer
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assert(str != nullptr);
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// If cOld was '\0' then this function would do nothing
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assert(cOld != '\0');
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while (*p != '\0') {
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if (*p == cOld) {
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*p = cNew;
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}
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p++;
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}
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return str;
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}
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char *strreplaceStr(char *pszBuf, const char *pszTok, const char *pszNewTok) {
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// Can't access nullptr pointers
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assert(pszBuf != nullptr);
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assert(pszTok != nullptr);
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assert(pszNewTok != nullptr);
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// Search token, and new token can't be the same
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assert(strcmp(pszTok, pszNewTok) != 0);
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int nTok = strlen(pszTok);
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int nNewTok = strlen(pszNewTok);
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int nDiff = nTok - nNewTok;
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char *p = pszBuf;
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for (char *pszSearch = strstr(p, pszTok); pszSearch; pszSearch = strstr(p, pszTok)) {
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char *pszEndTok = pszSearch + nTok;
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if (nDiff != 0) {
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memmove(pszEndTok - nDiff, pszEndTok, strlen(pszEndTok) + 1);
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}
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memcpy(pszSearch, pszNewTok, nNewTok);
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}
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return pszBuf;
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}
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void memreplaceChar(byte *pBuf, byte chOld, byte chNew, int32 lSize) {
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assert(pBuf != nullptr);
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assert(chOld != chNew);
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while (lSize-- > 0) {
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if (*pBuf == chOld) {
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*pBuf = chNew;
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}
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pBuf++;
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}
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}
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} // namespace Bagel
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