1 //===-- Stream.cpp ----------------------------------------------*- C++ -*-===//
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
7 //===----------------------------------------------------------------------===//
9 #include "lldb/Utility/Stream.h"
11 #include "lldb/Utility/Endian.h"
12 #include "lldb/Utility/VASPrintf.h"
13 #include "llvm/ADT/SmallString.h"
14 #include "llvm/Support/Format.h"
15 #include "llvm/Support/LEB128.h"
23 using namespace lldb_private;
25 Stream::Stream(uint32_t flags, uint32_t addr_size, ByteOrder byte_order)
26 : m_flags(flags), m_addr_size(addr_size), m_byte_order(byte_order),
27 m_indent_level(0), m_forwarder(*this) {}
30 : m_flags(0), m_addr_size(4), m_byte_order(endian::InlHostByteOrder()),
31 m_indent_level(0), m_forwarder(*this) {}
36 ByteOrder Stream::SetByteOrder(ByteOrder byte_order) {
37 ByteOrder old_byte_order = m_byte_order;
38 m_byte_order = byte_order;
39 return old_byte_order;
42 // Put an offset "uval" out to the stream using the printf format in "format".
43 void Stream::Offset(uint32_t uval, const char *format) { Printf(format, uval); }
45 // Put an SLEB128 "uval" out to the stream using the printf format in "format".
46 size_t Stream::PutSLEB128(int64_t sval) {
47 if (m_flags.Test(eBinary))
48 return llvm::encodeSLEB128(sval, m_forwarder);
50 return Printf("0x%" PRIi64, sval);
53 // Put an ULEB128 "uval" out to the stream using the printf format in "format".
54 size_t Stream::PutULEB128(uint64_t uval) {
55 if (m_flags.Test(eBinary))
56 return llvm::encodeULEB128(uval, m_forwarder);
58 return Printf("0x%" PRIx64, uval);
61 // Print a raw NULL terminated C string to the stream.
62 size_t Stream::PutCString(llvm::StringRef str) {
63 size_t bytes_written = 0;
64 bytes_written = Write(str.data(), str.size());
66 // when in binary mode, emit the NULL terminator
67 if (m_flags.Test(eBinary))
68 bytes_written += PutChar('\0');
72 // Print a double quoted NULL terminated C string to the stream using the
73 // printf format in "format".
74 void Stream::QuotedCString(const char *cstr, const char *format) {
78 // Put an address "addr" out to the stream with optional prefix and suffix
80 void lldb_private::DumpAddress(llvm::raw_ostream &s, uint64_t addr,
81 uint32_t addr_size, const char *prefix,
83 if (prefix == nullptr)
85 if (suffix == nullptr)
87 s << prefix << llvm::format_hex(addr, 2 + 2 * addr_size) << suffix;
90 // Put an address range out to the stream with optional prefix and suffix
92 void lldb_private::DumpAddressRange(llvm::raw_ostream &s, uint64_t lo_addr,
93 uint64_t hi_addr, uint32_t addr_size,
94 const char *prefix, const char *suffix) {
95 if (prefix && prefix[0])
97 DumpAddress(s, lo_addr, addr_size, "[");
98 DumpAddress(s, hi_addr, addr_size, "-", ")");
99 if (suffix && suffix[0])
103 size_t Stream::PutChar(char ch) { return Write(&ch, 1); }
105 // Print some formatted output to the stream.
106 size_t Stream::Printf(const char *format, ...) {
108 va_start(args, format);
109 size_t result = PrintfVarArg(format, args);
114 // Print some formatted output to the stream.
115 size_t Stream::PrintfVarArg(const char *format, va_list args) {
116 llvm::SmallString<1024> buf;
117 VASprintf(buf, format, args);
119 // Include the NULL termination byte for binary output
120 size_t length = buf.size();
121 if (m_flags.Test(eBinary))
123 return Write(buf.c_str(), length);
126 // Print and End of Line character to the stream
127 size_t Stream::EOL() { return PutChar('\n'); }
129 // Indent the current line using the current indentation level and print an
130 // optional string following the indentation spaces.
131 size_t Stream::Indent(const char *s) {
132 return Printf("%*.*s%s", m_indent_level, m_indent_level, "", s ? s : "");
135 size_t Stream::Indent(llvm::StringRef str) {
136 return Printf("%*.*s%s", m_indent_level, m_indent_level, "",
140 // Stream a character "ch" out to this stream.
141 Stream &Stream::operator<<(char ch) {
146 // Stream the NULL terminated C string out to this stream.
147 Stream &Stream::operator<<(const char *s) {
152 Stream &Stream::operator<<(llvm::StringRef str) {
153 Write(str.data(), str.size());
157 // Stream the pointer value out to this stream.
158 Stream &Stream::operator<<(const void *p) {
159 Printf("0x%.*tx", static_cast<int>(sizeof(const void *)) * 2, (ptrdiff_t)p);
163 // Get the current indentation level
164 unsigned Stream::GetIndentLevel() const { return m_indent_level; }
166 // Set the current indentation level
167 void Stream::SetIndentLevel(unsigned indent_level) {
168 m_indent_level = indent_level;
171 // Increment the current indentation level
172 void Stream::IndentMore(unsigned amount) { m_indent_level += amount; }
174 // Decrement the current indentation level
175 void Stream::IndentLess(unsigned amount) {
176 if (m_indent_level >= amount)
177 m_indent_level -= amount;
182 // Get the address size in bytes
183 uint32_t Stream::GetAddressByteSize() const { return m_addr_size; }
185 // Set the address size in bytes
186 void Stream::SetAddressByteSize(uint32_t addr_size) { m_addr_size = addr_size; }
188 // The flags get accessor
189 Flags &Stream::GetFlags() { return m_flags; }
191 // The flags const get accessor
192 const Flags &Stream::GetFlags() const { return m_flags; }
194 // The byte order get accessor
196 lldb::ByteOrder Stream::GetByteOrder() const { return m_byte_order; }
198 size_t Stream::PrintfAsRawHex8(const char *format, ...) {
200 va_start(args, format);
202 llvm::SmallString<1024> buf;
203 VASprintf(buf, format, args);
205 ByteDelta delta(*this);
214 size_t Stream::PutNHex8(size_t n, uint8_t uvalue) {
215 ByteDelta delta(*this);
216 for (size_t i = 0; i < n; ++i)
217 _PutHex8(uvalue, false);
221 void Stream::_PutHex8(uint8_t uvalue, bool add_prefix) {
222 if (m_flags.Test(eBinary)) {
228 static char g_hex_to_ascii_hex_char[16] = {'0', '1', '2', '3', '4', '5',
229 '6', '7', '8', '9', 'a', 'b',
231 char nibble_chars[2];
232 nibble_chars[0] = g_hex_to_ascii_hex_char[(uvalue >> 4) & 0xf];
233 nibble_chars[1] = g_hex_to_ascii_hex_char[(uvalue >> 0) & 0xf];
234 Write(nibble_chars, sizeof(nibble_chars));
238 size_t Stream::PutHex8(uint8_t uvalue) {
239 ByteDelta delta(*this);
240 _PutHex8(uvalue, false);
244 size_t Stream::PutHex16(uint16_t uvalue, ByteOrder byte_order) {
245 ByteDelta delta(*this);
247 if (byte_order == eByteOrderInvalid)
248 byte_order = m_byte_order;
250 if (byte_order == eByteOrderLittle) {
251 for (size_t byte = 0; byte < sizeof(uvalue); ++byte)
252 _PutHex8(static_cast<uint8_t>(uvalue >> (byte * 8)), false);
254 for (size_t byte = sizeof(uvalue) - 1; byte < sizeof(uvalue); --byte)
255 _PutHex8(static_cast<uint8_t>(uvalue >> (byte * 8)), false);
260 size_t Stream::PutHex32(uint32_t uvalue, ByteOrder byte_order) {
261 ByteDelta delta(*this);
263 if (byte_order == eByteOrderInvalid)
264 byte_order = m_byte_order;
266 if (byte_order == eByteOrderLittle) {
267 for (size_t byte = 0; byte < sizeof(uvalue); ++byte)
268 _PutHex8(static_cast<uint8_t>(uvalue >> (byte * 8)), false);
270 for (size_t byte = sizeof(uvalue) - 1; byte < sizeof(uvalue); --byte)
271 _PutHex8(static_cast<uint8_t>(uvalue >> (byte * 8)), false);
276 size_t Stream::PutHex64(uint64_t uvalue, ByteOrder byte_order) {
277 ByteDelta delta(*this);
279 if (byte_order == eByteOrderInvalid)
280 byte_order = m_byte_order;
282 if (byte_order == eByteOrderLittle) {
283 for (size_t byte = 0; byte < sizeof(uvalue); ++byte)
284 _PutHex8(static_cast<uint8_t>(uvalue >> (byte * 8)), false);
286 for (size_t byte = sizeof(uvalue) - 1; byte < sizeof(uvalue); --byte)
287 _PutHex8(static_cast<uint8_t>(uvalue >> (byte * 8)), false);
292 size_t Stream::PutMaxHex64(uint64_t uvalue, size_t byte_size,
293 lldb::ByteOrder byte_order) {
296 return PutHex8(static_cast<uint8_t>(uvalue));
298 return PutHex16(static_cast<uint16_t>(uvalue), byte_order);
300 return PutHex32(static_cast<uint32_t>(uvalue), byte_order);
302 return PutHex64(uvalue, byte_order);
307 size_t Stream::PutPointer(void *ptr) {
308 return PutRawBytes(&ptr, sizeof(ptr), endian::InlHostByteOrder(),
309 endian::InlHostByteOrder());
312 size_t Stream::PutFloat(float f, ByteOrder byte_order) {
313 if (byte_order == eByteOrderInvalid)
314 byte_order = m_byte_order;
316 return PutRawBytes(&f, sizeof(f), endian::InlHostByteOrder(), byte_order);
319 size_t Stream::PutDouble(double d, ByteOrder byte_order) {
320 if (byte_order == eByteOrderInvalid)
321 byte_order = m_byte_order;
323 return PutRawBytes(&d, sizeof(d), endian::InlHostByteOrder(), byte_order);
326 size_t Stream::PutLongDouble(long double ld, ByteOrder byte_order) {
327 if (byte_order == eByteOrderInvalid)
328 byte_order = m_byte_order;
330 return PutRawBytes(&ld, sizeof(ld), endian::InlHostByteOrder(), byte_order);
333 size_t Stream::PutRawBytes(const void *s, size_t src_len,
334 ByteOrder src_byte_order, ByteOrder dst_byte_order) {
335 ByteDelta delta(*this);
337 if (src_byte_order == eByteOrderInvalid)
338 src_byte_order = m_byte_order;
340 if (dst_byte_order == eByteOrderInvalid)
341 dst_byte_order = m_byte_order;
343 const uint8_t *src = static_cast<const uint8_t *>(s);
344 bool binary_was_set = m_flags.Test(eBinary);
346 m_flags.Set(eBinary);
347 if (src_byte_order == dst_byte_order) {
348 for (size_t i = 0; i < src_len; ++i)
349 _PutHex8(src[i], false);
351 for (size_t i = src_len - 1; i < src_len; --i)
352 _PutHex8(src[i], false);
355 m_flags.Clear(eBinary);
360 size_t Stream::PutBytesAsRawHex8(const void *s, size_t src_len,
361 ByteOrder src_byte_order,
362 ByteOrder dst_byte_order) {
363 ByteDelta delta(*this);
364 if (src_byte_order == eByteOrderInvalid)
365 src_byte_order = m_byte_order;
367 if (dst_byte_order == eByteOrderInvalid)
368 dst_byte_order = m_byte_order;
370 const uint8_t *src = static_cast<const uint8_t *>(s);
371 bool binary_is_set = m_flags.Test(eBinary);
372 m_flags.Clear(eBinary);
373 if (src_byte_order == dst_byte_order) {
374 for (size_t i = 0; i < src_len; ++i)
375 _PutHex8(src[i], false);
377 for (size_t i = src_len - 1; i < src_len; --i)
378 _PutHex8(src[i], false);
381 m_flags.Set(eBinary);
386 size_t Stream::PutStringAsRawHex8(llvm::StringRef s) {
387 ByteDelta delta(*this);
388 bool binary_is_set = m_flags.Test(eBinary);
389 m_flags.Clear(eBinary);
393 m_flags.Set(eBinary);