1 files changed, 82 insertions, 0 deletions
diff --git a/lib/sanitizer_common/sanitizer_flags.cc b/lib/sanitizer_common/sanitizer_flags.cc
new file mode 100644
index 0000000..cdeeb78
--- /dev/null
+++ b/lib/sanitizer_common/sanitizer_flags.cc
@@ -0,0 +1,82 @@
+//===-- sanitizer_flags.cc ------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of ThreadSanitizer/AddressSanitizer runtime.
+//
+//===----------------------------------------------------------------------===//
+
+#include "sanitizer_flags.h"
+
+#include "sanitizer_common.h"
+#include "sanitizer_libc.h"
+
+namespace __sanitizer {
+
+static char *GetFlagValue(const char *env, const char *name) {
+  if (env == 0)
+    return 0;
+  const char *pos = internal_strstr(env, name);
+  const char *end;
+  if (pos == 0)
+    return 0;
+  pos += internal_strlen(name);
+  if (pos[0] != '=') {
+    end = pos;
+  } else {
+    pos += 1;
+    if (pos[0] == '"') {
+      pos += 1;
+      end = internal_strchr(pos, '"');
+    } else if (pos[0] == '\'') {
+      pos += 1;
+      end = internal_strchr(pos, '\'');
+    } else {
+      end = internal_strchr(pos, ' ');
+    }
+    if (end == 0)
+      end = pos + internal_strlen(pos);
+  }
+  int len = end - pos;
+  char *f = (char*)InternalAlloc(len + 1);
+  internal_memcpy(f, pos, len);
+  f[len] = '\0';
+  return f;
+}
+
+void ParseFlag(const char *env, bool *flag, const char *name) {
+  char *val = GetFlagValue(env, name);
+  if (val == 0)
+    return;
+  if (0 == internal_strcmp(val, "0") ||
+      0 == internal_strcmp(val, "no") ||
+      0 == internal_strcmp(val, "false"))
+    *flag = false;
+  if (0 == internal_strcmp(val, "1") ||
+      0 == internal_strcmp(val, "yes") ||
+      0 == internal_strcmp(val, "true"))
+    *flag = true;
+  InternalFree(val);
+}
+
+void ParseFlag(const char *env, int *flag, const char *name) {
+  char *val = GetFlagValue(env, name);
+  if (val == 0)
+    return;
+  *flag = internal_atoll(val);
+  InternalFree(val);
+}
+
+void ParseFlag(const char *env, const char **flag, const char *name) {
+  const char *val = GetFlagValue(env, name);
+  if (val == 0)
+    return;
+  *flag = val;
+}
+
+}  // namespace __sanitizer