/* Thread worker callback function to process a single file */
VOID CALLBACK wcfunc (PTP_CALLBACK_INSTANCE Instance, PVOID Context, PTP_WORK Work)
/* Count the number of characters, works, and lines in */
/* the file targ->filename */
/* NOTE: Simple version; results may differ from wc utility */
{
WORK_OBJECT_ARG * threadArgs;
MAPPED_FILE_HANDLE fhandle;
int iThrd;
unsigned int ch, c, nl, nw, nc;
int isspace_c; // Current character
int isspace_ch = 1; // Previous character. Assume space to count first word
int error;
unsigned int fsize;
char *fin, *fend;
iThrd = InterlockedIncrement (&WorkerId) - 1;
threadArgs = (WORK_OBJECT_ARG *)Context;
threadArgs->wcerror = 1; /* Error for now */
fin = (char*) map_file(threadArgs->filename, &fsize, &error, &fhandle);
if (NULL == fin) {
return;
}
fend = fin + fsize;
ch = nw = nc = nl = 0;
while (fin < fend) {
c = *fin++;
isspace_c = is_a_space(c);
if (!isspace_c && isspace_ch) {
nw++;
}
isspace_ch = isspace_c;
if (c == '\n') {
nl++;
isspace_ch = 1; // Start looking for a new word
}
}
UnMapFile(&fhandle);
threadArgs->kchar = fsize;
threadArgs->kword = nw;
threadArgs->kline = nl;
threadArgs->wcerror = 0;
return;
}
static const char *rstrip( const char *c ) {
while ( is_a_space( *c ) )
--c;
return c + 1;
}
