56 lines
1.1 KiB
C++
Executable File
56 lines
1.1 KiB
C++
Executable File
#include <cstring>
|
|
#include "replace.h"
|
|
|
|
int Replace::run(
|
|
std::string& buffer,
|
|
const std::string& find,
|
|
const std::string& replace,
|
|
bool matchCase)
|
|
{
|
|
if (buffer.empty() || find.empty())
|
|
return 0;
|
|
|
|
std::string output;
|
|
size_t capacity = buffer.size();
|
|
int diff = replace.size() - find.size();
|
|
if (diff > 0)
|
|
capacity += diff * BUFSIZ;
|
|
|
|
output.reserve(capacity);
|
|
size_t findLength = find.size();
|
|
int matchCount = 0;
|
|
|
|
// comparison function pointer
|
|
int (*comp)(const char *, const char *, size_t) =
|
|
#ifdef __WXMSW__
|
|
(matchCase) ? strncmp : strnicmp;
|
|
#else
|
|
(matchCase) ? strncmp : strncasecmp;
|
|
#endif
|
|
|
|
char *bufferPtr;
|
|
const char *findPtr, *replacePtr;
|
|
bufferPtr = (char *)buffer.c_str();
|
|
findPtr = find.c_str();
|
|
replacePtr = replace.c_str();
|
|
|
|
while (*bufferPtr)
|
|
{
|
|
if (!comp((const char *)bufferPtr, findPtr, findLength))
|
|
{
|
|
++matchCount;
|
|
output += replacePtr;
|
|
bufferPtr += findLength;
|
|
}
|
|
else
|
|
{
|
|
output += *bufferPtr;
|
|
++bufferPtr;
|
|
}
|
|
}
|
|
if (!matchCount)
|
|
return 0;
|
|
buffer = output;
|
|
return matchCount;
|
|
}
|