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Surround input regex with .*( ).* in demo

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This commit is contained in:
Camden Dixie O'Brien 2024-11-03 12:31:06 +00:00
parent 656726a8c1
commit dad687216b
1 changed files with 13 additions and 1 deletions
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14
demo/shitgrep.c
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@ -12,6 +12,11 @@
#define BUFFER_START_CAPACITY 128 #define BUFFER_START_CAPACITY 128
#define PREFIX ".*("
#define PREFIX_LEN 3
#define SUFFIX ").*"
#define SUFFIX_LEN 3
int main(int argc, char *argv[]) int main(int argc, char *argv[])
{ {
if (argc != 2) { if (argc != 2) {
@ -19,8 +24,15 @@ int main(int argc, char *argv[])
return EXIT_FAILURE; return EXIT_FAILURE;
} }
const int input_len = strlen(argv[1]);
const int regex_len = input_len + 6;
char *regex = malloc(regex_len);
memcpy(regex, PREFIX, PREFIX_LEN);
memcpy(regex + PREFIX_LEN, argv[1], input_len);
memcpy(regex + PREFIX_LEN + input_len, SUFFIX, SUFFIX_LEN);
fsa_t dfa; fsa_t dfa;
if (!compile(argv[1], strlen(argv[1]), &dfa)) { if (!compile(regex, regex_len, &dfa)) {
fprintf(stderr, "Failed to parse regex\n"); fprintf(stderr, "Failed to parse regex\n");
return EXIT_FAILURE; return EXIT_FAILURE;
} }