// Copyright 2014 the V8 project authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #include "src/ostreams.h" #if V8_OS_WIN #define snprintf sprintf_s #endif namespace v8 { namespace internal { OFStreamBase::OFStreamBase(FILE* f) : f_(f) {} OFStreamBase::~OFStreamBase() {} OFStreamBase::int_type OFStreamBase::sync() { std::fflush(f_); return 0; } OFStreamBase::int_type OFStreamBase::overflow(int_type c) { return (c != EOF) ? std::fputc(c, f_) : c; } OFStream::OFStream(FILE* f) : OFStreamBase(f), std::ostream(this) { DCHECK_NOT_NULL(f); } OFStream::~OFStream() {} namespace { // Locale-independent predicates. bool IsPrint(uint16_t c) { return 0x20 <= c && c <= 0x7e; } bool IsSpace(uint16_t c) { return (0x9 <= c && c <= 0xd) || c == 0x20; } bool IsOK(uint16_t c) { return (IsPrint(c) || IsSpace(c)) && c != '\\'; } std::ostream& PrintUC16(std::ostream& os, uint16_t c, bool (*pred)(uint16_t)) { char buf[10]; const char* format = pred(c) ? "%c" : (c <= 0xff) ? "\\x%02x" : "\\u%04x"; snprintf(buf, sizeof(buf), format, c); return os << buf; } } // namespace std::ostream& operator<<(std::ostream& os, const AsReversiblyEscapedUC16& c) { return PrintUC16(os, c.value, IsOK); } std::ostream& operator<<(std::ostream& os, const AsUC16& c) { return PrintUC16(os, c.value, IsPrint); } } // namespace internal } // namespace v8