From 9de595b778b26ba0a56d989598e4fd0438362c01 Mon Sep 17 00:00:00 2001
From: Kostya Kortchinsky <kostyak@google.com>
Date: Tue, 19 Mar 2019 14:47:05 +0000
Subject: [scudo][standalone] Add string utility functions

Summary:
Add some string utility functions, notably to format strings, get
lengths, convert a string to a number. Those functions will be
used in reports and flags (coming up next). They were mostly borrowed
from sanitizer_common.

Make use of the string length function in a couple places in the
platform code that was checked in with inlined version of it.

Add some tests.

Reviewers: morehouse, eugenis, vitalybuka, hctim

Reviewed By: morehouse, vitalybuka

Subscribers: mgorny, delcypher, jdoerfert, #sanitizers, llvm-commits

Tags: #llvm, #sanitizers

Differential Revision: https://reviews.llvm.org/D59262

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@356457 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/scudo/standalone/string_utils.h | 42 +++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 lib/scudo/standalone/string_utils.h

(limited to 'lib/scudo/standalone/string_utils.h')

diff --git a/lib/scudo/standalone/string_utils.h b/lib/scudo/standalone/string_utils.h
new file mode 100644
index 000000000..aea7b3ffd
--- /dev/null
+++ b/lib/scudo/standalone/string_utils.h
@@ -0,0 +1,42 @@
+//===-- string_utils.h ------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SCUDO_STRING_UTILS_H_
+#define SCUDO_STRING_UTILS_H_
+
+#include "internal_defs.h"
+#include "vector.h"
+
+#include <stdarg.h>
+
+namespace scudo {
+
+class ScopedString {
+public:
+  explicit ScopedString(uptr MaxLength) : String(MaxLength), Length(0) {
+    String[0] = '\0';
+  }
+  uptr length() { return Length; }
+  const char *data() { return String.data(); }
+  void clear() {
+    String[0] = '\0';
+    Length = 0;
+  }
+  void append(const char *Format, va_list Args);
+  void append(const char *Format, ...);
+
+private:
+  Vector<char> String;
+  uptr Length;
+};
+
+void Printf(const char *Format, ...);
+
+} // namespace scudo
+
+#endif // SCUDO_STRING_UTILS_H_
-- 
cgit v1.2.1