Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1 | // Copyright 2014 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "src/ostreams.h" |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 6 | #include "src/objects.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 7 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 8 | #if V8_OS_WIN |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 9 | #if _MSC_VER < 1900 |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 10 | #define snprintf sprintf_s |
| 11 | #endif |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 12 | #endif |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 13 | |
| 14 | namespace v8 { |
| 15 | namespace internal { |
| 16 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 17 | OFStreamBase::OFStreamBase(FILE* f) : f_(f) {} |
| 18 | |
| 19 | |
| 20 | OFStreamBase::~OFStreamBase() {} |
| 21 | |
| 22 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 23 | int OFStreamBase::sync() { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 24 | std::fflush(f_); |
| 25 | return 0; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 26 | } |
| 27 | |
| 28 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 29 | OFStreamBase::int_type OFStreamBase::overflow(int_type c) { |
| 30 | return (c != EOF) ? std::fputc(c, f_) : c; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 31 | } |
| 32 | |
| 33 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 34 | std::streamsize OFStreamBase::xsputn(const char* s, std::streamsize n) { |
| 35 | return static_cast<std::streamsize>( |
| 36 | std::fwrite(s, 1, static_cast<size_t>(n), f_)); |
| 37 | } |
| 38 | |
| 39 | |
| 40 | OFStream::OFStream(FILE* f) : std::ostream(nullptr), buf_(f) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 41 | DCHECK_NOT_NULL(f); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 42 | rdbuf(&buf_); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 43 | } |
| 44 | |
| 45 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 46 | OFStream::~OFStream() {} |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 47 | |
| 48 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 49 | namespace { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 50 | |
| 51 | // Locale-independent predicates. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 52 | bool IsPrint(uint16_t c) { return 0x20 <= c && c <= 0x7e; } |
| 53 | bool IsSpace(uint16_t c) { return (0x9 <= c && c <= 0xd) || c == 0x20; } |
| 54 | bool IsOK(uint16_t c) { return (IsPrint(c) || IsSpace(c)) && c != '\\'; } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 55 | |
| 56 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 57 | std::ostream& PrintUC16(std::ostream& os, uint16_t c, bool (*pred)(uint16_t)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 58 | char buf[10]; |
| 59 | const char* format = pred(c) ? "%c" : (c <= 0xff) ? "\\x%02x" : "\\u%04x"; |
| 60 | snprintf(buf, sizeof(buf), format, c); |
| 61 | return os << buf; |
| 62 | } |
| 63 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 64 | |
| 65 | std::ostream& PrintUC32(std::ostream& os, int32_t c, bool (*pred)(uint16_t)) { |
| 66 | if (c <= String::kMaxUtf16CodeUnit) { |
| 67 | return PrintUC16(os, static_cast<uint16_t>(c), pred); |
| 68 | } |
| 69 | char buf[13]; |
| 70 | snprintf(buf, sizeof(buf), "\\u{%06x}", c); |
| 71 | return os << buf; |
| 72 | } |
| 73 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 74 | } // namespace |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 75 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 76 | |
| 77 | std::ostream& operator<<(std::ostream& os, const AsReversiblyEscapedUC16& c) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 78 | return PrintUC16(os, c.value, IsOK); |
| 79 | } |
| 80 | |
| 81 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 82 | std::ostream& operator<<(std::ostream& os, const AsEscapedUC16ForJSON& c) { |
| 83 | if (c.value == '\n') return os << "\\n"; |
| 84 | if (c.value == '\r') return os << "\\r"; |
| 85 | if (c.value == '\t') return os << "\\t"; |
| 86 | if (c.value == '\"') return os << "\\\""; |
| 87 | return PrintUC16(os, c.value, IsOK); |
| 88 | } |
| 89 | |
| 90 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 91 | std::ostream& operator<<(std::ostream& os, const AsUC16& c) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 92 | return PrintUC16(os, c.value, IsPrint); |
| 93 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 94 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 95 | |
| 96 | std::ostream& operator<<(std::ostream& os, const AsUC32& c) { |
| 97 | return PrintUC32(os, c.value, IsPrint); |
| 98 | } |
| 99 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 100 | std::ostream& operator<<(std::ostream& os, const AsHex& hex) { |
| 101 | char buf[20]; |
| 102 | snprintf(buf, sizeof(buf), "%.*" PRIx64, hex.min_width, hex.value); |
| 103 | return os << buf; |
| 104 | } |
| 105 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 106 | } // namespace internal |
| 107 | } // namespace v8 |