Ragel state machine

shortcodes.rl

@@ -0,0 +1,41 @@
+#include <stdio.h>
+#include "bstrlib/bstrlib.h"
+
+%%{
+  machine shortcode;
+
+  label = alpha+ > {label_start = p; printf("%s", label_start);} > {printf("=>%s", label_start);};
+
+  start = '{{' % {printf("start");};
+  end = '}}' > {printf("end");};
+
+  main := (start label? end);
+
+}%%
+
+bstring parse(char *_input) {
+    %%write data;
+    char *eof, *ts, *te = 0;
+    int cs, act = 0;
+
+    bstring output = bfromcstr("out");
+
+    bstring input = bfromcstr(_input);
+    char *p = input->data;
+    char *pe = p + blength(input);
+
+    char *label_start = 0;
+    char *label_end = 0;
+    
+ 
+    %% write init;
+    %% write exec;
+
+    return output;
+}
+
+int main(int argc, char **argv) {
+    bstring output = parse("{{foo}}");
+    printf("\n%s\n", output->data);
+    return 0;
+}