/* program entry point
*/
int main(int argc, char **argv) {
unsigned int nlines, nwords, wordcount;
unsigned long totalcharacters;
nlines = 0;
nwords = 0;
totalcharacters = 0;
showargs(argc, argv);
while (readaline() != 0) {
wordcount = makeintowords(buffer);
nwords += wordcount;
totalcharacters += analyzewords(buffer);
nlines++;
}
printstatistics(nlines, nwords, totalcharacters);
return(0);
}
int main(int argc, const char* argv[])
{
// Used here to make sure shell quotiong doesn't screw up with our
// regexes.
showargs(argc, argv);
printf("--------\n");
if (argc < 4) {
printf("Usage: %s <regex_type> <regex> <string>\n", argv[0]);
exit(1);
}
const char* arg_type = argv[1];
const char* arg_regex = argv[2];
const char* arg_string = argv[3];
int extended = 0;
if (!strcmp(arg_type, "extended"))
extended = 1;
else if (!strcmp(arg_type, "basic"))
extended = 0;
else {
printf("Expected regex_type to be \"extended\" or \"basic\"\n");
exit(1);
}
regex_t compiled_regex;
const size_t max_groups = 9;
size_t errcode;
int regflags = 0;
// Set up flags for regcomp
if (extended)
regflags |= REG_EXTENDED;
// Compile the regex. Return code != 0 means an error.
if ((errcode = regcomp(&compiled_regex, arg_regex, regflags))) {
report_regex_error(errcode, &compiled_regex);
exit(1);
}
regmatch_t match_groups[max_groups];
if (regexec(&compiled_regex, arg_string,
max_groups, match_groups, 0) == 0) {
// Go over all matches. A match with rm_so = -1 signals the end
for (size_t i = 0; i < max_groups; ++i) {
if (match_groups[i].rm_so == -1)
break;
printf("Match group %zu: ", i);
for (regoff_t p = match_groups[i].rm_so;
p < match_groups[i].rm_eo; ++p) {
putchar(arg_string[p]);
}
putchar('\n');
}
} else {
printf("No match\n");
}
return 0;
}
