1 //===-- string_utils.h ------------------------------------------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #ifndef SCUDO_STRING_UTILS_H_ 10 #define SCUDO_STRING_UTILS_H_ 11 12 #include "internal_defs.h" 13 #include "vector.h" 14 15 #include <stdarg.h> 16 17 namespace scudo { 18 19 class ScopedString { 20 public: 21 explicit ScopedString() { String.push_back('\0'); } 22 uptr length() { return String.size() - 1; } 23 const char *data() { return String.data(); } 24 void clear() { 25 String.clear(); 26 String.push_back('\0'); 27 } 28 void vappend(const char *Format, va_list &Args); 29 void append(const char *Format, ...) FORMAT(2, 3); 30 void output() const { outputRaw(String.data()); } 31 void reserve(size_t Size) { String.reserve(Size + 1); } 32 uptr capacity() { return String.capacity() - 1; } 33 34 private: 35 void appendNumber(u64 AbsoluteValue, u8 Base, u8 MinNumberLength, 36 bool PadWithZero, bool Negative, bool Upper); 37 void appendUnsigned(u64 Num, u8 Base, u8 MinNumberLength, bool PadWithZero, 38 bool Upper); 39 void appendSignedDecimal(s64 Num, u8 MinNumberLength, bool PadWithZero); 40 void appendString(int Width, int MaxChars, const char *S); 41 void appendPointer(u64 ptr_value); 42 43 Vector<char, 256> String; 44 }; 45 46 void Printf(const char *Format, ...) FORMAT(1, 2); 47 48 } // namespace scudo 49 50 #endif // SCUDO_STRING_UTILS_H_ 51