Stream.h revision 3b924561d38937c991f9558bb23a03dc46d59734
1//===-- Stream.h ------------------------------------------------*- C++ -*-===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10#ifndef liblldb_Stream_h_ 11#define liblldb_Stream_h_ 12#if defined(__cplusplus) 13 14#include "lldb/lldb-private.h" 15#include "lldb/Core/Flags.h" 16#include <stdarg.h> 17 18namespace lldb_private { 19 20//---------------------------------------------------------------------- 21/// @class Stream Stream.h "lldb/Core/Stream.h" 22/// @brief A stream class that can stream formatted output to a file. 23//---------------------------------------------------------------------- 24class Stream 25{ 26public: 27 //------------------------------------------------------------------ 28 /// \a m_flags bit values. 29 //------------------------------------------------------------------ 30 enum 31 { 32 eVerbose = (1 << 0), ///< If set, verbose logging is enabled 33 eDebug = (1 << 1), ///< If set, debug logging is enabled 34 eAddPrefix = (1 << 2), ///< Add number prefixes for binary, octal and hex when eBinary is clear 35 eBinary = (1 << 3) ///< Get and put data as binary instead of as the default string mode. 36 }; 37 38 //------------------------------------------------------------------ 39 /// Construct with flags and address size and byte order. 40 /// 41 /// Construct with dump flags \a flags and the default address 42 /// size. \a flags can be any of the above enumeration logical OR'ed 43 /// together. 44 //------------------------------------------------------------------ 45 Stream (uint32_t flags, 46 uint32_t addr_size, 47 lldb::ByteOrder byte_order); 48 49 //------------------------------------------------------------------ 50 /// Construct a default Stream, not binary, host byte order and 51 /// host addr size. 52 /// 53 //------------------------------------------------------------------ 54 Stream (); 55 56 //------------------------------------------------------------------ 57 /// Destructor 58 //------------------------------------------------------------------ 59 virtual 60 ~Stream (); 61 62 //------------------------------------------------------------------ 63 // Subclasses must override these methods 64 //------------------------------------------------------------------ 65 66 //------------------------------------------------------------------ 67 /// Flush the stream. 68 /// 69 /// Subclasses should flush the stream to make any output appear 70 /// if the stream has any buffering. 71 //------------------------------------------------------------------ 72 virtual void 73 Flush () = 0; 74 75 //------------------------------------------------------------------ 76 /// Output character bytes to the stream. 77 /// 78 /// Appends \a src_len characters from the buffer \a src to the 79 /// stream. 80 /// 81 /// @param[in] src 82 /// A buffer containing at least \a src_len bytes of data. 83 /// 84 /// @param[in] src_len 85 /// A number of bytes to append to the stream. 86 /// 87 /// @return 88 /// The number of bytes that were appended to the stream. 89 //------------------------------------------------------------------ 90 virtual int 91 Write (const void *src, size_t src_len) = 0; 92 93 //------------------------------------------------------------------ 94 // Member functions 95 //------------------------------------------------------------------ 96 int 97 PutChar (char ch); 98 99 //------------------------------------------------------------------ 100 /// Set the byte_order value. 101 /// 102 /// Sets the byte order of the data to extract. Extracted values 103 /// will be swapped if necessary when decoding. 104 /// 105 /// @param[in] byte_order 106 /// The byte order value to use when extracting data. 107 /// 108 /// @return 109 /// The old byte order value. 110 //------------------------------------------------------------------ 111 lldb::ByteOrder 112 SetByteOrder (lldb::ByteOrder byte_order); 113 114 //------------------------------------------------------------------ 115 /// Format a C string from a printf style format and variable 116 /// arguments and encode and append the resulting C string as hex 117 /// bytes. 118 /// 119 /// @param[in] format 120 /// A printf style format string. 121 /// 122 /// @param[in] ... 123 /// Any additional arguments needed for the printf format string. 124 /// 125 /// @return 126 /// The number of bytes that were appended to the stream. 127 //------------------------------------------------------------------ 128 int 129 PrintfAsRawHex8 (const char *format, ...) __attribute__ ((format (printf, 2, 3))); 130 131 //------------------------------------------------------------------ 132 /// Format a C string from a printf style format and variable 133 /// arguments and encode and append the resulting C string as hex 134 /// bytes. 135 /// 136 /// @param[in] format 137 /// A printf style format string. 138 /// 139 /// @param[in] ... 140 /// Any additional arguments needed for the printf format string. 141 /// 142 /// @return 143 /// The number of bytes that were appended to the stream. 144 //------------------------------------------------------------------ 145 int 146 PutHex8 (uint8_t uvalue); 147 148 int 149 PutNHex8 (size_t n, uint8_t uvalue); 150 151 int 152 PutHex16 (uint16_t uvalue, 153 lldb::ByteOrder byte_order = lldb::eByteOrderInvalid); 154 155 int 156 PutHex32 (uint32_t uvalue, 157 lldb::ByteOrder byte_order = lldb::eByteOrderInvalid); 158 159 int 160 PutHex64 (uint64_t uvalue, 161 lldb::ByteOrder byte_order = lldb::eByteOrderInvalid); 162 163 int 164 PutMaxHex64 (uint64_t uvalue, 165 size_t byte_size, 166 lldb::ByteOrder byte_order = lldb::eByteOrderInvalid); 167 int 168 PutFloat (float f, 169 lldb::ByteOrder byte_order = lldb::eByteOrderInvalid); 170 171 int 172 PutDouble (double d, 173 lldb::ByteOrder byte_order = lldb::eByteOrderInvalid); 174 175 int 176 PutLongDouble (long double ld, 177 lldb::ByteOrder byte_order = lldb::eByteOrderInvalid); 178 179 int 180 PutPointer (void *ptr); 181 182 // Append \a src_len bytes from \a s to the stream as hex characters 183 // (two ascii characters per byte of input data) 184 int 185 PutBytesAsRawHex8 (const void *src, 186 size_t src_len, 187 lldb::ByteOrder src_byte_order = lldb::eByteOrderInvalid, 188 lldb::ByteOrder dst_byte_order = lldb::eByteOrderInvalid); 189 190 // Append \a src_len bytes from \a s to the stream as binary data. 191 int 192 PutRawBytes (const void *s, 193 size_t src_len, 194 lldb::ByteOrder src_byte_order = lldb::eByteOrderInvalid, 195 lldb::ByteOrder dst_byte_order = lldb::eByteOrderInvalid); 196 197 int 198 PutCStringAsRawHex8 (const char *s); 199 200 //------------------------------------------------------------------ 201 /// Output a NULL terminated C string \a cstr to the stream \a s. 202 /// 203 /// @param[in] cstr 204 /// A NULL terminated C string. 205 /// 206 /// @return 207 /// A reference to this class so multiple things can be streamed 208 /// in one statement. 209 //------------------------------------------------------------------ 210 Stream& 211 operator<< (const char *cstr); 212 213 //------------------------------------------------------------------ 214 /// Output a pointer value \a p to the stream \a s. 215 /// 216 /// @param[in] p 217 /// A void pointer. 218 /// 219 /// @return 220 /// A reference to this class so multiple things can be streamed 221 /// in one statement. 222 //------------------------------------------------------------------ 223 Stream& 224 operator<< (void *p); 225 226 //------------------------------------------------------------------ 227 /// Output a character \a ch to the stream \a s. 228 /// 229 /// @param[in] ch 230 /// A printable character value. 231 /// 232 /// @return 233 /// A reference to this class so multiple things can be streamed 234 /// in one statement. 235 //------------------------------------------------------------------ 236 Stream& 237 operator<< (char ch); 238 239 //------------------------------------------------------------------ 240 /// Output a uint8_t \a uval to the stream \a s. 241 /// 242 /// @param[in] uval 243 /// A uint8_t value. 244 /// 245 /// @return 246 /// A reference to this class so multiple things can be streamed 247 /// in one statement. 248 //------------------------------------------------------------------ 249 Stream& 250 operator<< (uint8_t uval); 251 252 //------------------------------------------------------------------ 253 /// Output a uint16_t \a uval to the stream \a s. 254 /// 255 /// @param[in] uval 256 /// A uint16_t value. 257 /// 258 /// @return 259 /// A reference to this class so multiple things can be streamed 260 /// in one statement. 261 //------------------------------------------------------------------ 262 Stream& 263 operator<< (uint16_t uval); 264 265 //------------------------------------------------------------------ 266 /// Output a uint32_t \a uval to the stream \a s. 267 /// 268 /// @param[in] uval 269 /// A uint32_t value. 270 /// 271 /// @return 272 /// A reference to this class so multiple things can be streamed 273 /// in one statement. 274 //------------------------------------------------------------------ 275 Stream& 276 operator<< (uint32_t uval); 277 278 //------------------------------------------------------------------ 279 /// Output a uint64_t \a uval to the stream \a s. 280 /// 281 /// @param[in] uval 282 /// A uint64_t value. 283 /// 284 /// @return 285 /// A reference to this class so multiple things can be streamed 286 /// in one statement. 287 //------------------------------------------------------------------ 288 Stream& 289 operator<< (uint64_t uval); 290 291 //------------------------------------------------------------------ 292 /// Output a int8_t \a sval to the stream \a s. 293 /// 294 /// @param[in] sval 295 /// A int8_t value. 296 /// 297 /// @return 298 /// A reference to this class so multiple things can be streamed 299 /// in one statement. 300 //------------------------------------------------------------------ 301 Stream& 302 operator<< (int8_t sval); 303 304 //------------------------------------------------------------------ 305 /// Output a int16_t \a sval to the stream \a s. 306 /// 307 /// @param[in] sval 308 /// A int16_t value. 309 /// 310 /// @return 311 /// A reference to this class so multiple things can be streamed 312 /// in one statement. 313 //------------------------------------------------------------------ 314 Stream& 315 operator<< (int16_t sval); 316 317 //------------------------------------------------------------------ 318 /// Output a int32_t \a sval to the stream \a s. 319 /// 320 /// @param[in] sval 321 /// A int32_t value. 322 /// 323 /// @return 324 /// A reference to this class so multiple things can be streamed 325 /// in one statement. 326 //------------------------------------------------------------------ 327 Stream& 328 operator<< (int32_t sval); 329 330 //------------------------------------------------------------------ 331 /// Output a int64_t \a sval to the stream \a s. 332 /// 333 /// @param[in] sval 334 /// A int64_t value. 335 /// 336 /// @return 337 /// A reference to this class so multiple things can be streamed 338 /// in one statement. 339 //------------------------------------------------------------------ 340 Stream& 341 operator<< (int64_t sval); 342 343 //------------------------------------------------------------------ 344 /// Output an address value to this stream. 345 /// 346 /// Put an address \a addr out to the stream with optional \a prefix 347 /// and \a suffix strings. 348 /// 349 /// @param[in] addr 350 /// An address value. 351 /// 352 /// @param[in] addr_size 353 /// Size in bytes of the address, used for formatting. 354 /// 355 /// @param[in] prefix 356 /// A prefix C string. If NULL, no prefix will be output. 357 /// 358 /// @param[in] suffix 359 /// A suffix C string. If NULL, no suffix will be output. 360 //------------------------------------------------------------------ 361 void 362 Address (uint64_t addr, int addr_size, const char *prefix = NULL, const char *suffix = NULL); 363 364 //------------------------------------------------------------------ 365 /// Output an address range to this stream. 366 /// 367 /// Put an address range \a lo_addr - \a hi_addr out to the stream 368 /// with optional \a prefix and \a suffix strings. 369 /// 370 /// @param[in] lo_addr 371 /// The start address of the address range. 372 /// 373 /// @param[in] hi_addr 374 /// The end address of the address range. 375 /// 376 /// @param[in] addr_size 377 /// Size in bytes of the address, used for formatting. 378 /// 379 /// @param[in] prefix 380 /// A prefix C string. If NULL, no prefix will be output. 381 /// 382 /// @param[in] suffix 383 /// A suffix C string. If NULL, no suffix will be output. 384 //------------------------------------------------------------------ 385 void 386 AddressRange(uint64_t lo_addr, uint64_t hi_addr, int addr_size, const char *prefix = NULL, const char *suffix = NULL); 387 388 //------------------------------------------------------------------ 389 /// Output a C string to the stream. 390 /// 391 /// Print a C string \a cstr to the stream. 392 /// 393 /// @param[in] cstr 394 /// The string to be output to the stream. 395 //------------------------------------------------------------------ 396 int 397 PutCString (const char *cstr); 398 399 //------------------------------------------------------------------ 400 /// Output and End of Line character to the stream. 401 //------------------------------------------------------------------ 402 int 403 EOL(); 404 405 //------------------------------------------------------------------ 406 /// Get the address size in bytes. 407 /// 408 /// @return 409 /// The size of an address in bytes that is used when outputting 410 /// address and pointer values to the stream. 411 //------------------------------------------------------------------ 412 uint8_t 413 GetAddressByteSize () const; 414 415 //------------------------------------------------------------------ 416 /// Test if debug logging is enabled. 417 /// 418 /// @return 419 // \b true if the debug flag bit is set in this stream, \b 420 // false otherwise. 421 //------------------------------------------------------------------ 422 bool 423 GetDebug() const; 424 425 //------------------------------------------------------------------ 426 /// The flags accessor. 427 /// 428 /// @return 429 /// A reference to the Flags member variable. 430 //------------------------------------------------------------------ 431 Flags& 432 GetFlags(); 433 434 //------------------------------------------------------------------ 435 /// The flags const accessor. 436 /// 437 /// @return 438 /// A const reference to the Flags member variable. 439 //------------------------------------------------------------------ 440 const Flags& 441 GetFlags() const; 442 443 //------------------------------------------------------------------ 444 //// The byte order accessor. 445 //// 446 //// @return 447 //// The byte order. 448 //------------------------------------------------------------------ 449 lldb::ByteOrder 450 GetByteOrder() const; 451 452 //------------------------------------------------------------------ 453 /// Get the current indentation level. 454 /// 455 /// @return 456 /// The current indentation level as an integer. 457 //------------------------------------------------------------------ 458 int 459 GetIndentLevel () const; 460 461 //------------------------------------------------------------------ 462 /// Test if verbose logging is enabled. 463 /// 464 /// @return 465 // \b true if the verbose flag bit is set in this stream, \b 466 // false otherwise. 467 //------------------------------------------------------------------ 468 bool 469 GetVerbose() const; 470 471 //------------------------------------------------------------------ 472 /// Indent the current line in the stream. 473 /// 474 /// Indent the current line using the current indentation level and 475 /// print an optional string following the idenatation spaces. 476 /// 477 /// @param[in] s 478 /// A C string to print following the indentation. If NULL, just 479 /// output the indentation characters. 480 //------------------------------------------------------------------ 481 int 482 Indent(const char *s = NULL); 483 484 //------------------------------------------------------------------ 485 /// Decrement the current indentation level. 486 //------------------------------------------------------------------ 487 void 488 IndentLess (int amount = 2); 489 490 //------------------------------------------------------------------ 491 /// Increment the current indentation level. 492 //------------------------------------------------------------------ 493 void 494 IndentMore (int amount = 2); 495 496 //------------------------------------------------------------------ 497 /// Output an offset value. 498 /// 499 /// Put an offset \a uval out to the stream using the printf format 500 /// in \a format. 501 /// 502 /// @param[in] offset 503 /// The offset value. 504 /// 505 /// @param[in] format 506 /// The printf style format to use when outputting the offset. 507 //------------------------------------------------------------------ 508 void 509 Offset (uint32_t offset, const char *format = "0x%8.8x: "); 510 511 //------------------------------------------------------------------ 512 /// Output printf formatted output to the stream. 513 /// 514 /// Print some formatted output to the stream. 515 /// 516 /// @param[in] format 517 /// A printf style format string. 518 /// 519 /// @param[in] ... 520 /// Variable arguments that are needed for the printf style 521 /// format string \a format. 522 //------------------------------------------------------------------ 523 int 524 Printf (const char *format, ...) __attribute__ ((format (printf, 2, 3))); 525 526 int 527 PrintfVarArg(const char *format, va_list args); 528 529 //------------------------------------------------------------------ 530 /// Output a quoted C string value to the stream. 531 /// 532 /// Print a double quoted NULL terminated C string to the stream 533 /// using the printf format in \a format. 534 /// 535 /// @param[in] cstr 536 /// A NULL terminated C string value. 537 /// 538 /// @param[in] format 539 /// The optional C string format that can be overridden. 540 //------------------------------------------------------------------ 541 void 542 QuotedCString (const char *cstr, const char *format = "\"%s\""); 543 544 //------------------------------------------------------------------ 545 /// Set the address size in bytes. 546 /// 547 /// @param[in] addr_size 548 /// The new size in bytes of an address to use when outputting 549 /// address and pointer values. 550 //------------------------------------------------------------------ 551 void 552 SetAddressByteSize (uint8_t addr_size); 553 554 //------------------------------------------------------------------ 555 /// Set the current indentation level. 556 /// 557 /// @param[in] level 558 /// The new indentation level. 559 //------------------------------------------------------------------ 560 void 561 SetIndentLevel (int level); 562 563 //------------------------------------------------------------------ 564 /// Output a SLEB128 number to the stream. 565 /// 566 /// Put an SLEB128 \a uval out to the stream using the printf format 567 /// in \a format. 568 /// 569 /// @param[in] uval 570 /// A uint64_t value that was extracted as a SLEB128 value. 571 /// 572 /// @param[in] format 573 /// The optional printf format that can be overridden. 574 //------------------------------------------------------------------ 575 int 576 PutSLEB128 (int64_t uval); 577 578 //------------------------------------------------------------------ 579 /// Output a ULEB128 number to the stream. 580 /// 581 /// Put an ULEB128 \a uval out to the stream using the printf format 582 /// in \a format. 583 /// 584 /// @param[in] uval 585 /// A uint64_t value that was extracted as a ULEB128 value. 586 /// 587 /// @param[in] format 588 /// The optional printf format that can be overridden. 589 //------------------------------------------------------------------ 590 int 591 PutULEB128 (uint64_t uval); 592 593 static void 594 UnitTest(Stream *s); 595 596protected: 597 //------------------------------------------------------------------ 598 // Member variables 599 //------------------------------------------------------------------ 600 Flags m_flags; ///< Dump flags. 601 uint8_t m_addr_size; ///< Size of an address in bytes. 602 lldb::ByteOrder m_byte_order;///< Byte order to use when encoding scalar types. 603 int m_indent_level; ///< Indention level. 604 605 int _PutHex8 (uint8_t uvalue, bool add_prefix); 606}; 607 608} // namespace lldb_private 609 610#endif // #if defined(__cplusplus) 611#endif // liblldb_Stream_h_ 612 613