abe5c29077
R=bmeurer@chromium.org Review URL: https://codereview.chromium.org/786763002 Cr-Commit-Position: refs/heads/master@{#25709}
68 lines
1.4 KiB
C++
68 lines
1.4 KiB
C++
// Copyright 2014 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "src/ostreams.h"
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#if V8_OS_WIN
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#define snprintf sprintf_s
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#endif
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namespace v8 {
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namespace internal {
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OFStreamBase::OFStreamBase(FILE* f) : f_(f) {}
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OFStreamBase::~OFStreamBase() {}
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OFStreamBase::int_type OFStreamBase::sync() {
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std::fflush(f_);
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return 0;
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}
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OFStreamBase::int_type OFStreamBase::overflow(int_type c) {
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return (c != EOF) ? std::fputc(c, f_) : c;
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}
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OFStream::OFStream(FILE* f) : OFStreamBase(f), std::ostream(this) {
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DCHECK_NOT_NULL(f);
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}
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OFStream::~OFStream() {}
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namespace {
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// Locale-independent predicates.
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bool IsPrint(uint16_t c) { return 0x20 <= c && c <= 0x7e; }
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bool IsSpace(uint16_t c) { return (0x9 <= c && c <= 0xd) || c == 0x20; }
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bool IsOK(uint16_t c) { return (IsPrint(c) || IsSpace(c)) && c != '\\'; }
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std::ostream& PrintUC16(std::ostream& os, uint16_t c, bool (*pred)(uint16_t)) {
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char buf[10];
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const char* format = pred(c) ? "%c" : (c <= 0xff) ? "\\x%02x" : "\\u%04x";
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snprintf(buf, sizeof(buf), format, c);
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return os << buf;
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}
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} // namespace
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std::ostream& operator<<(std::ostream& os, const AsReversiblyEscapedUC16& c) {
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return PrintUC16(os, c.value, IsOK);
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}
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std::ostream& operator<<(std::ostream& os, const AsUC16& c) {
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return PrintUC16(os, c.value, IsPrint);
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}
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} // namespace internal
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} // namespace v8
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