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str.cpp
Package: shell.rar [view]
Upload User: xhy777
Upload Date: 2007-02-14
Package Size: 24088k
Code Size: 2k
Category:
Windows Kernel
Development Platform:
Visual C++
- #include "npcommon.h"
- // strstrf(str, srch)
- //
- // Returns a pointer to the first occurrence of srch within
- // str (like strchrf, but search parameter is a string, not
- // a single character). Returns NULL if not found.
- // REVIEW: simple algorithm here, but depending on usage,
- // might be overkill to complicate it.
- LPSTR WINAPI strstrf(LPCSTR lpString, LPCSTR lpSearch)
- {
- INT cbSearch = strlenf(lpSearch);
- INT cbToSearch;
- LPSTR lp;
- // calculate the maximum distance to go -- the length
- // of the string to look in less the length of the
- // string to search for, since beyond that the string
- // being searched for would not fit.
- cbToSearch = strlenf(lpString) - cbSearch;
- if (cbToSearch < 0)
- return NULL; /* string being searched is shorter */
- for (lp = (LPSTR)lpString; lp - lpString <= cbToSearch; ADVANCE(lp)) {
- if (strncmpf(lp, lpSearch, cbSearch) == 0)
- return lp;
- }
- return NULL;
- }
- // stristrf(str, srch)
- //
- // Returns a pointer to the first occurrence of srch within
- // str, case-insensitive. Returns NULL if not found.
- // REVIEW: simple algorithm here, but depending on usage,
- // might be overkill to complicate it.
- LPSTR WINAPI stristrf(LPCSTR lpString, LPCSTR lpSearch)
- {
- INT cbSearch = strlenf(lpSearch);
- INT cbToSearch;
- LPSTR lp;
- // calculate the maximum distance to go -- the length
- // of the string to look in less the length of the
- // string to search for, since beyond that the string
- // being searched for would not fit.
- cbToSearch = strlenf(lpString) - cbSearch;
- if (cbToSearch < 0)
- return NULL; /* string being searched is shorter */
- for (lp = (LPSTR)lpString; lp - lpString <= cbToSearch; ADVANCE(lp)) {
- if (strnicmpf(lp, lpSearch, cbSearch) == 0)
- return lp;
- }
- return NULL;
- }