commit all the code!

[detour.git] / pulsehunter.c

diff --git a/pulsehunter.c b/pulsehunter.c
new file mode 100644 (file)
index 0000000..f3a0de5
--- /dev/null
+++ b/pulsehunter.c
@@ -0,0 +1,27 @@
+#include "common.c"
+
+int main(int argc, char **argv) {
+  if (argc != 2) puts("invocation: ./pulsehunter <bits>"), exit(1);
+  char *bits = argv[1];
+  int nbits = strlen(bits);
+
+  if (chdir("out")) perror("unable to enter directory 'out'"), exit(1);
+  DIR *d = opendir(".");
+  if (!d) perror("unable to open directory 'out'"), exit(1);
+  for (struct dirent *e = (errno=0,readdir(d)); e; e = (errno=0,readdir(d))) {
+    if (e->d_name[0] == '.') continue;
+    size_t len;
+    char *data = slurp_file(e->d_name, &len);
+    if (!data) { perror("error while slurping dirent"); continue; }
+    int maxbits = 0;
+    for (int i=0; i<((int)len)-nbits; i++) {
+      int matching = 0;
+      for (int j=0; j<nbits; j++) if (bits[j]==data[i+j]) matching++;
+      if (matching > maxbits) maxbits = matching;
+    }
+    printf("%d\t%s\n", maxbits, e->d_name);
+    free(data);
+  }
+  if (errno) perror("error while reading directory 'out'"), exit(1);
+  return 0;
+}
\ No newline at end of file