diff options
Diffstat (limited to 'examples')
| -rw-r--r-- | examples/regex_match.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/examples/regex_match.c b/examples/regex_match.c new file mode 100644 index 00000000..dad28f84 --- /dev/null +++ b/examples/regex_match.c @@ -0,0 +1,36 @@ +#include <stdio.h>
+#include <stc/csview.h>
+#include <stc/cregex.h>
+#include <stc/crandom.h>
+#include <time.h>
+
+
+int main()
+{
+ // Lets find the first sequence of digits in a string
+ const char *s = "Hello numeric world, there are 24 hours in a day, 3600 seconds in an hour."
+ " Around 365.25 days a year, and 52 weeks in a year."
+ " Boltzmann const: 1.38064852E-23, is very small."
+ " Bohrradius is 5.29177210903e-11, and Avogadros number is 6.02214076e23. That's it.";
+
+ c_auto (cregex, re)
+ {
+ re = cregex_compile("[+-]?([0-9]*\\.)?[0-9]+([Ee][-+]?[0-9]+)?");
+ cregex_match_t m;
+ if (cregex_match(re, s, &m)) {
+ printf("Found digits at position %u-%u\n", m.match_begin, m.match_end);
+ } else {
+ printf("Could not find any digits\n");
+ }
+
+ c_auto (cregex_res, matches) {
+ matches = cregex_match_all(re, s);
+ csview sv = csview_from(s);
+ c_foreach (i, cregex_res, matches) {
+ csview r = csview_slice(sv, i.ref->match_begin, i.ref->match_end);
+ printf(c_svfmt " / ", c_svarg(r));
+ }
+ }
+ puts("");
+ }
+}
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