1 files changed, 49 insertions, 0 deletions
diff --git a/mask.cc b/mask.cc
new file mode 100644
index 00000000..a7352d12
--- /dev/null
+++ b/mask.cc
@@ -0,0 +1,49 @@
+#include "mask.h"
+#include "debug.h"
+
+#include <pcre.h>
+
+mask_t::mask_t(const std::string& pat) : exclude(false)
+{
+  const char * p = pat.c_str();
+  if (*p == '-') {
+    exclude = true;
+    p++;
+    while (std::isspace(*p))
+      p++;
+  }
+  else if (*p == '+') {
+    p++;
+    while (std::isspace(*p))
+      p++;
+  }
+  pattern = p;
+
+  const char *error;
+  int erroffset;
+  regexp = pcre_compile(pattern.c_str(), PCRE_CASELESS,
+			&error, &erroffset, NULL);
+  if (! regexp)
+    throw mask_error(std::string("Failed to compile regexp '") + pattern + "'");
+}
+
+mask_t::mask_t(const mask_t& m) : exclude(m.exclude), pattern(m.pattern)
+{
+  const char *error;
+  int erroffset;
+  regexp = pcre_compile(pattern.c_str(), PCRE_CASELESS,
+			&error, &erroffset, NULL);
+  assert(regexp);
+}
+
+mask_t::~mask_t() {
+  pcre_free((pcre *)regexp);
+}
+
+bool mask_t::match(const std::string& str) const
+{
+  static int ovec[30];
+  int result = pcre_exec((pcre *)regexp, NULL,
+			 str.c_str(), str.length(), 0, 0, ovec, 30);
+  return result >= 0 && ! exclude;
+}