Mercurial > hg > octave-nkf
annotate src/oct-stream.h @ 11570:57632dea2446
attempt better backward compatibility for Array constructors
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Wed, 19 Jan 2011 17:55:56 -0500 |
| parents | fd0a3ac60b0e |
| children | cda4aa780d58 |
| rev | line source |
|---|---|
| 2117 | 1 /* |
| 2 | |
| 11523 | 3 Copyright (C) 1996-2011 John W. Eaton |
| 2117 | 4 |
| 5 This file is part of Octave. | |
| 6 | |
| 7 Octave is free software; you can redistribute it and/or modify it | |
| 8 under the terms of the GNU General Public License as published by the | |
| 7016 | 9 Free Software Foundation; either version 3 of the License, or (at your |
| 10 option) any later version. | |
| 2117 | 11 |
| 12 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 15 for more details. | |
| 16 | |
| 17 You should have received a copy of the GNU General Public License | |
| 7016 | 18 along with Octave; see the file COPYING. If not, see |
| 19 <http://www.gnu.org/licenses/>. | |
| 2117 | 20 |
| 21 */ | |
| 22 | |
| 23 #if !defined (octave_octave_stream_h) | |
| 24 #define octave_octave_stream_h 1 | |
| 25 | |
| 2877 | 26 class Matrix; |
| 27 class string_vector; | |
| 28 class octave_value; | |
| 29 class octave_value_list; | |
| 2117 | 30 |
|
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31 #include <iosfwd> |
| 5765 | 32 #include <sstream> |
| 2877 | 33 #include <string> |
| 6757 | 34 #include <map> |
| 2117 | 35 |
| 36 #include "Array.h" | |
| 2317 | 37 #include "data-conv.h" |
| 3640 | 38 #include "lo-utils.h" |
| 2317 | 39 #include "mach-info.h" |
| 2117 | 40 |
| 3640 | 41 class |
| 6109 | 42 OCTINTERP_API |
| 2117 | 43 scanf_format_elt |
| 44 { | |
| 3640 | 45 public: |
| 46 | |
| 3483 | 47 enum special_conversion |
| 48 { | |
| 49 whitespace_conversion = 1, | |
| 50 literal_conversion = 2 | |
| 51 }; | |
| 52 | |
| 2215 | 53 scanf_format_elt (const char *txt = 0, int w = 0, bool d = false, |
| 10313 | 54 char typ = '\0', char mod = '\0', |
| 55 const std::string& ch_class = std::string ()) | |
| 3640 | 56 : text (strsave (txt)), width (w), discard (d), type (typ), |
| 57 modifier (mod), char_class (ch_class) { } | |
| 58 | |
| 59 scanf_format_elt (const scanf_format_elt& e) | |
| 60 : text (strsave (e.text)), width (e.width), discard (e.discard), | |
| 61 type (e.type), modifier (e.modifier), char_class (e.char_class) { } | |
| 2117 | 62 |
| 3640 | 63 scanf_format_elt& operator = (const scanf_format_elt& e) |
| 64 { | |
| 65 if (this != &e) | |
| 10313 | 66 { |
| 67 text = strsave (e.text); | |
| 68 width = e.width; | |
| 69 discard = e.discard; | |
| 70 type = e.type; | |
| 71 modifier = e.modifier; | |
| 72 char_class = e.char_class; | |
| 73 } | |
| 2117 | 74 |
| 3640 | 75 return *this; |
| 76 } | |
| 77 | |
| 78 ~scanf_format_elt (void) { delete [] text; } | |
| 79 | |
| 80 // The C-style format string. | |
| 2117 | 81 const char *text; |
| 3640 | 82 |
| 83 // The maximum field width. | |
| 2215 | 84 int width; |
| 3640 | 85 |
| 86 // TRUE if we are not storing the result of this conversion. | |
| 2117 | 87 bool discard; |
| 3640 | 88 |
| 89 // Type of conversion -- `d', `i', `o', `u', `x', `e', `f', `g', | |
| 90 // `c', `s', `p', `%', or `['. | |
| 2117 | 91 char type; |
| 3640 | 92 |
| 93 // A length modifier -- `h', `l', or `L'. | |
| 2117 | 94 char modifier; |
| 3640 | 95 |
| 96 // The class of characters in a `[' format. | |
| 3523 | 97 std::string char_class; |
| 2117 | 98 }; |
| 99 | |
| 100 class | |
| 6109 | 101 OCTINTERP_API |
| 2117 | 102 scanf_format_list |
| 103 { | |
| 104 public: | |
| 105 | |
| 3523 | 106 scanf_format_list (const std::string& fmt = std::string ()); |
| 2117 | 107 |
| 108 ~scanf_format_list (void); | |
| 109 | |
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110 octave_idx_type num_conversions (void) { return nconv; } |
| 2117 | 111 |
| 2215 | 112 // The length can be different than the number of conversions. |
| 113 // For example, "x %d y %d z" has 2 conversions but the length of | |
| 114 // the list is 3 because of the characters that appear after the | |
| 115 // last conversion. | |
| 116 | |
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117 octave_idx_type length (void) { return list.length (); } |
| 2215 | 118 |
| 2117 | 119 const scanf_format_elt *first (void) |
| 120 { | |
| 121 curr_idx = 0; | |
| 122 return current (); | |
| 123 } | |
| 124 | |
| 125 const scanf_format_elt *current (void) const | |
| 126 { return list.length () > 0 ? list.elem (curr_idx) : 0; } | |
| 127 | |
| 3640 | 128 const scanf_format_elt *next (bool cycle = true) |
| 2117 | 129 { |
| 130 curr_idx++; | |
| 3640 | 131 |
| 2117 | 132 if (curr_idx >= list.length ()) |
| 10313 | 133 { |
| 134 if (cycle) | |
| 135 curr_idx = 0; | |
| 136 else | |
| 137 return 0; | |
| 138 } | |
| 2117 | 139 return current (); |
| 140 } | |
| 141 | |
| 142 void printme (void) const; | |
| 143 | |
| 144 bool ok (void) const { return (nconv >= 0); } | |
| 145 | |
| 3145 | 146 operator bool () const { return ok (); } |
| 2117 | 147 |
| 148 bool all_character_conversions (void); | |
| 149 | |
| 150 bool all_numeric_conversions (void); | |
| 151 | |
| 152 private: | |
| 153 | |
| 3642 | 154 // Number of conversions specified by this format string, or -1 if |
| 2117 | 155 // invalid conversions have been found. |
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156 octave_idx_type nconv; |
| 2117 | 157 |
| 158 // Index to current element; | |
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159 octave_idx_type curr_idx; |
| 2117 | 160 |
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161 // FIXME -- maybe LIST should be a std::list object? |
| 2117 | 162 // List of format elements. |
| 163 Array<scanf_format_elt*> list; | |
| 164 | |
| 165 // Temporary buffer. | |
| 5765 | 166 std::ostringstream *buf; |
| 2117 | 167 |
| 2215 | 168 void add_elt_to_list (int width, bool discard, char type, char modifier, |
| 10313 | 169 octave_idx_type& num_elts, |
| 170 const std::string& char_class = std::string ()); | |
| 2117 | 171 |
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172 void process_conversion (const std::string& s, size_t& i, size_t n, |
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173 int& width, bool& discard, char& type, |
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174 char& modifier, octave_idx_type& num_elts); |
| 2117 | 175 |
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176 int finish_conversion (const std::string& s, size_t& i, size_t n, |
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177 int& width, bool discard, char& type, |
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178 char modifier, octave_idx_type& num_elts); |
| 2117 | 179 // No copying! |
| 180 | |
| 181 scanf_format_list (const scanf_format_list&); | |
| 182 | |
| 183 scanf_format_list& operator = (const scanf_format_list&); | |
| 184 }; | |
| 185 | |
| 3640 | 186 class |
| 2117 | 187 printf_format_elt |
| 188 { | |
| 3640 | 189 public: |
| 190 | |
| 191 printf_format_elt (const char *txt = 0, int n = 0, int w = 0, | |
| 10313 | 192 int p = 0, const std::string& f = std::string (), |
| 193 char typ = '\0', char mod = '\0') | |
| 3640 | 194 : text (strsave (txt)), args (n), fw (w), prec (p), flags (f), |
| 195 type (typ), modifier (mod) { } | |
| 196 | |
| 197 printf_format_elt (const printf_format_elt& e) | |
| 198 : text (strsave (e.text)), args (e.args), fw (e.fw), prec (e.prec), | |
| 199 flags (e.flags), type (e.type), modifier (e.modifier) { } | |
| 200 | |
| 201 printf_format_elt& operator = (const printf_format_elt& e) | |
| 202 { | |
| 203 if (this != &e) | |
| 10313 | 204 { |
| 205 text = strsave (e.text); | |
| 206 args = e.args; | |
| 207 fw = e.fw; | |
| 208 prec = e.prec; | |
| 209 flags = e.flags; | |
| 210 type = e.type; | |
| 211 modifier = e.modifier; | |
| 212 } | |
| 2117 | 213 |
| 3640 | 214 return *this; |
| 215 } | |
| 2117 | 216 |
| 3640 | 217 ~printf_format_elt (void) { delete [] text; } |
| 218 | |
| 219 // The C-style format string. | |
| 2117 | 220 const char *text; |
| 3640 | 221 |
| 222 // How many args do we expect to consume? | |
| 2117 | 223 int args; |
| 3640 | 224 |
| 225 // Field width. | |
| 226 int fw; | |
| 227 | |
| 228 // Precision. | |
| 229 int prec; | |
| 230 | |
| 231 // Flags -- `-', `+', ` ', `0', or `#'. | |
| 3642 | 232 std::string flags; |
| 3640 | 233 |
| 234 // Type of conversion -- `d', `i', `o', `x', `X', `u', `c', `s', | |
| 235 // `f', `e', `E', `g', `G', `p', or `%' | |
| 2117 | 236 char type; |
| 3640 | 237 |
| 238 // A length modifier -- `h', `l', or `L'. | |
| 2117 | 239 char modifier; |
| 240 }; | |
| 241 | |
| 242 class | |
| 6109 | 243 OCTINTERP_API |
| 2117 | 244 printf_format_list |
| 245 { | |
| 246 public: | |
| 247 | |
| 3523 | 248 printf_format_list (const std::string& fmt = std::string ()); |
| 2117 | 249 |
| 250 ~printf_format_list (void); | |
| 251 | |
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252 octave_idx_type num_conversions (void) { return nconv; } |
| 2117 | 253 |
| 254 const printf_format_elt *first (void) | |
| 255 { | |
| 256 curr_idx = 0; | |
| 257 return current (); | |
| 258 } | |
| 259 | |
| 260 const printf_format_elt *current (void) const | |
| 261 { return list.length () > 0 ? list.elem (curr_idx) : 0; } | |
| 262 | |
| 3640 | 263 const printf_format_elt *next (bool cycle = true) |
| 2117 | 264 { |
| 265 curr_idx++; | |
| 3640 | 266 |
| 2117 | 267 if (curr_idx >= list.length ()) |
| 10313 | 268 { |
| 269 if (cycle) | |
| 270 curr_idx = 0; | |
| 271 else | |
| 272 return 0; | |
| 273 } | |
| 3640 | 274 |
| 2117 | 275 return current (); |
| 276 } | |
| 277 | |
| 3640 | 278 bool last_elt_p (void) { return (curr_idx + 1 == list.length ()); } |
| 279 | |
| 2117 | 280 void printme (void) const; |
| 281 | |
| 282 bool ok (void) const { return (nconv >= 0); } | |
| 283 | |
| 3145 | 284 operator bool () const { return ok (); } |
| 2117 | 285 |
| 286 private: | |
| 287 | |
| 3642 | 288 // Number of conversions specified by this format string, or -1 if |
| 2117 | 289 // invalid conversions have been found. |
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290 octave_idx_type nconv; |
| 2117 | 291 |
| 292 // Index to current element; | |
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293 octave_idx_type curr_idx; |
| 2117 | 294 |
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295 // FIXME -- maybe LIST should be a std::list object? |
| 2117 | 296 // List of format elements. |
| 297 Array<printf_format_elt*> list; | |
| 298 | |
| 299 // Temporary buffer. | |
| 5765 | 300 std::ostringstream *buf; |
| 2117 | 301 |
| 3640 | 302 void add_elt_to_list (int args, const std::string& flags, int fw, |
| 10313 | 303 int prec, char type, char modifier, |
| 304 octave_idx_type& num_elts); | |
| 3640 | 305 |
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306 void process_conversion (const std::string& s, size_t& i, size_t n, |
| 10313 | 307 int& args, std::string& flags, int& fw, |
| 308 int& prec, char& modifier, char& type, | |
| 309 octave_idx_type& num_elts); | |
| 3640 | 310 |
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311 void finish_conversion (const std::string& s, size_t& i, int args, |
| 10313 | 312 const std::string& flags, int fw, int prec, |
| 313 char modifier, char& type, | |
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314 octave_idx_type& num_elts); |
| 2117 | 315 |
| 316 // No copying! | |
| 317 | |
| 318 printf_format_list (const printf_format_list&); | |
| 319 | |
| 320 printf_format_list& operator = (const printf_format_list&); | |
| 321 }; | |
| 322 | |
| 323 // Provide an interface for Octave streams. | |
| 324 | |
| 325 class | |
| 6109 | 326 OCTINTERP_API |
| 2117 | 327 octave_base_stream |
| 328 { | |
| 329 friend class octave_stream; | |
| 330 | |
| 331 public: | |
| 332 | |
| 3544 | 333 octave_base_stream (std::ios::openmode arg_md = std::ios::in|std::ios::out, |
| 10313 | 334 oct_mach_info::float_format ff |
| 335 = oct_mach_info::native_float_format ()) | |
| 3340 | 336 : count (0), md (arg_md), flt_fmt (ff), fail (false), open_state (true) |
| 337 { } | |
| 2117 | 338 |
| 339 virtual ~octave_base_stream (void) { } | |
| 340 | |
| 341 // The remaining functions are not specific to input or output only, | |
| 342 // and must be provided by the derived classes. | |
| 343 | |
| 344 // Position a stream at OFFSET relative to ORIGIN. | |
| 345 | |
| 4797 | 346 virtual int seek (long offset, int origin) = 0; |
| 2117 | 347 |
| 348 // Return current stream position. | |
| 349 | |
| 4797 | 350 virtual long tell (void) = 0; |
| 2117 | 351 |
| 3340 | 352 // Return TRUE if EOF has been reached on this stream. |
| 2117 | 353 |
| 354 virtual bool eof (void) const = 0; | |
| 355 | |
| 356 // The name of the file. | |
| 357 | |
| 3523 | 358 virtual std::string name (void) const = 0; |
| 2117 | 359 |
| 360 // If the derived class provides this function and it returns a | |
| 361 // pointer to a valid istream, scanf(), read(), getl(), and gets() | |
| 362 // will automatically work for this stream. | |
| 363 | |
| 3523 | 364 virtual std::istream *input_stream (void) { return 0; } |
| 2117 | 365 |
| 366 // If the derived class provides this function and it returns a | |
| 367 // pointer to a valid ostream, flush(), write(), and printf() will | |
| 368 // automatically work for this stream. | |
| 369 | |
| 3523 | 370 virtual std::ostream *output_stream (void) { return 0; } |
| 2117 | 371 |
| 3340 | 372 // Return TRUE if this stream is open. |
| 373 | |
| 374 bool is_open (void) const { return open_state; } | |
| 375 | |
| 3652 | 376 virtual void do_close (void) { } |
| 377 | |
| 378 void close (void) | |
| 379 { | |
| 380 if (is_open ()) | |
| 10313 | 381 { |
| 382 open_state = false; | |
| 383 do_close (); | |
| 384 } | |
| 3652 | 385 } |
| 3340 | 386 |
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387 virtual int file_number (void) const |
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388 { |
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389 // Kluge alert! |
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390 |
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391 if (name () == "stdin") |
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392 return 0; |
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393 else if (name () == "stdout") |
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394 return 1; |
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395 else if (name () == "stderr") |
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396 return 2; |
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397 else |
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398 return -1; |
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399 } |
| 3145 | 400 |
| 2117 | 401 bool ok (void) const { return ! fail; } |
| 402 | |
| 403 // Return current error message for this stream. | |
| 404 | |
| 3523 | 405 std::string error (bool clear, int& err_num); |
| 2117 | 406 |
| 407 protected: | |
| 408 | |
| 3340 | 409 int mode (void) const { return md; } |
| 2117 | 410 |
| 3340 | 411 oct_mach_info::float_format float_format (void) const { return flt_fmt; } |
| 2117 | 412 |
| 413 // Set current error state and set fail to TRUE. | |
| 414 | |
| 3523 | 415 void error (const std::string& msg); |
| 4468 | 416 void error (const std::string& who, const std::string& msg); |
| 2117 | 417 |
| 418 // Clear any error message and set fail to FALSE. | |
| 419 | |
| 420 void clear (void); | |
| 421 | |
| 4889 | 422 // Clear stream state. |
| 423 | |
| 424 void clearerr (void); | |
| 425 | |
| 2117 | 426 private: |
| 427 | |
| 3340 | 428 // A reference count. |
| 5275 | 429 octave_idx_type count; |
| 3340 | 430 |
| 2117 | 431 // The permission bits for the file. Should be some combination of |
| 3544 | 432 // std::ios::open_mode bits. |
| 2117 | 433 int md; |
| 434 | |
| 435 // Data format. | |
| 2317 | 436 oct_mach_info::float_format flt_fmt; |
| 2117 | 437 |
| 438 // TRUE if an error has occurred. | |
| 439 bool fail; | |
| 440 | |
| 3340 | 441 // TRUE if this stream is open. |
| 442 bool open_state; | |
| 443 | |
| 2117 | 444 // Should contain error message if fail is TRUE. |
| 3523 | 445 std::string errmsg; |
| 2117 | 446 |
| 447 // Functions that are defined for all input streams (input streams | |
| 448 // are those that define is). | |
| 449 | |
| 5275 | 450 std::string do_gets (octave_idx_type max_len, bool& err, bool strip_newline, |
| 10313 | 451 const std::string& who /* = "gets" */); |
| 2117 | 452 |
| 5275 | 453 std::string getl (octave_idx_type max_len, bool& err, const std::string& who /* = "getl" */); |
| 454 std::string gets (octave_idx_type max_len, bool& err, const std::string& who /* = "gets" */); | |
| 9701 | 455 long skipl (long count, bool& err, const std::string& who /* = "skipl" */); |
| 2117 | 456 |
| 5275 | 457 octave_value do_scanf (scanf_format_list& fmt_list, octave_idx_type nr, octave_idx_type nc, |
| 10313 | 458 bool one_elt_size_spec, octave_idx_type& count, |
| 459 const std::string& who /* = "scanf" */); | |
| 2117 | 460 |
| 4468 | 461 octave_value scanf (const std::string& fmt, const Array<double>& size, |
| 10313 | 462 octave_idx_type& count, const std::string& who /* = "scanf" */); |
| 2117 | 463 |
| 4468 | 464 bool do_oscanf (const scanf_format_elt *elt, octave_value&, |
| 10313 | 465 const std::string& who /* = "scanf" */); |
| 2117 | 466 |
| 4468 | 467 octave_value_list oscanf (const std::string& fmt, |
| 10313 | 468 const std::string& who /* = "scanf" */); |
| 2215 | 469 |
| 2117 | 470 // Functions that are defined for all output streams (output streams |
| 471 // are those that define os). | |
| 472 | |
| 473 int flush (void); | |
| 474 | |
| 4468 | 475 int do_printf (printf_format_list& fmt_list, const octave_value_list& args, |
| 10313 | 476 const std::string& who /* = "printf" */); |
| 2117 | 477 |
| 4468 | 478 int printf (const std::string& fmt, const octave_value_list& args, |
| 10313 | 479 const std::string& who /* = "printf" */); |
| 2117 | 480 |
| 4468 | 481 int puts (const std::string& s, const std::string& who /* = "puts" */); |
| 2117 | 482 |
| 483 // We can always do this in terms of seek(), so the derived class | |
| 484 // only has to provide that. | |
| 485 | |
| 4468 | 486 void invalid_operation (const std::string& who, const char *rw); |
| 2117 | 487 |
| 488 // No copying! | |
| 489 | |
| 490 octave_base_stream (const octave_base_stream&); | |
| 491 | |
| 492 octave_base_stream& operator = (const octave_base_stream&); | |
| 493 }; | |
| 494 | |
| 495 class | |
| 6109 | 496 OCTINTERP_API |
| 2117 | 497 octave_stream |
| 498 { | |
| 499 public: | |
| 500 | |
| 3340 | 501 octave_stream (octave_base_stream *bs = 0); |
| 502 | |
| 503 ~octave_stream (void); | |
| 2117 | 504 |
| 3340 | 505 octave_stream (const octave_stream&); |
| 506 | |
| 507 octave_stream& operator = (const octave_stream&); | |
| 2117 | 508 |
| 509 int flush (void); | |
| 510 | |
| 5275 | 511 std::string getl (octave_idx_type max_len, bool& err, const std::string& who /* = "getl" */); |
| 4468 | 512 std::string getl (const octave_value& max_len, bool& err, |
| 10313 | 513 const std::string& who /* = "getl" */); |
| 2117 | 514 |
| 5275 | 515 std::string gets (octave_idx_type max_len, bool& err, const std::string& who /* = "gets" */); |
| 4468 | 516 std::string gets (const octave_value& max_len, bool& err, |
| 10313 | 517 const std::string& who /* = "gets" */); |
| 2117 | 518 |
| 9701 | 519 long skipl (long count, bool& err, const std::string& who /* = "skipl" */); |
| 520 long skipl (const octave_value& count, bool& err, const std::string& who /* = "skipl" */); | |
| 521 | |
| 4797 | 522 int seek (long offset, int origin); |
| 2117 | 523 int seek (const octave_value& offset, const octave_value& origin); |
| 524 | |
| 4797 | 525 long tell (void); |
| 2117 | 526 |
| 527 int rewind (void); | |
| 528 | |
| 3340 | 529 bool is_open (void) const; |
| 530 | |
| 531 void close (void); | |
| 532 | |
| 5275 | 533 octave_value read (const Array<double>& size, octave_idx_type block_size, |
| 10313 | 534 oct_data_conv::data_type input_type, |
| 535 oct_data_conv::data_type output_type, | |
| 536 octave_idx_type skip, oct_mach_info::float_format flt_fmt, | |
| 537 octave_idx_type& count); | |
| 2117 | 538 |
| 5275 | 539 octave_idx_type write (const octave_value& data, octave_idx_type block_size, |
| 10313 | 540 oct_data_conv::data_type output_type, |
| 541 octave_idx_type skip, oct_mach_info::float_format flt_fmt); | |
| 4944 | 542 |
| 543 template <class T> | |
| 5275 | 544 octave_idx_type write (const Array<T>&, octave_idx_type block_size, |
| 10313 | 545 oct_data_conv::data_type output_type, |
| 546 octave_idx_type skip, oct_mach_info::float_format flt_fmt); | |
| 2117 | 547 |
| 4468 | 548 octave_value scanf (const std::string& fmt, const Array<double>& size, |
| 10313 | 549 octave_idx_type& count, const std::string& who /* = "scanf" */); |
| 2117 | 550 |
| 5279 | 551 octave_value scanf (const octave_value& fmt, const Array<double>& size, |
| 10313 | 552 octave_idx_type& count, const std::string& who /* = "scanf" */); |
| 5279 | 553 |
| 4468 | 554 octave_value_list oscanf (const std::string& fmt, |
| 10313 | 555 const std::string& who /* = "scanf" */); |
| 2215 | 556 |
| 5279 | 557 octave_value_list oscanf (const octave_value& fmt, |
| 10313 | 558 const std::string& who /* = "scanf" */); |
| 5279 | 559 |
| 4468 | 560 int printf (const std::string& fmt, const octave_value_list& args, |
| 10313 | 561 const std::string& who /* = "printf" */); |
| 2117 | 562 |
| 5279 | 563 int printf (const octave_value& fmt, const octave_value_list& args, |
| 10313 | 564 const std::string& who /* = "printf" */); |
| 5279 | 565 |
| 4468 | 566 int puts (const std::string& s, const std::string& who /* = "puts" */); |
| 567 int puts (const octave_value& s, const std::string& who /* = "puts" */); | |
| 2117 | 568 |
| 569 bool eof (void) const; | |
| 570 | |
| 3523 | 571 std::string error (bool clear, int& err_num); |
| 2117 | 572 |
| 3523 | 573 std::string error (bool clear = false) |
| 2117 | 574 { |
| 2435 | 575 int err_num; |
| 576 return error (clear, err_num); | |
| 2117 | 577 } |
| 578 | |
| 4799 | 579 // Set the error message and state. |
| 580 | |
| 581 void error (const std::string& msg) | |
| 582 { | |
| 583 if (rep) | |
| 10313 | 584 rep->error (msg); |
| 4799 | 585 } |
| 586 | |
| 587 void error (const char *msg) { error (std::string (msg)); } | |
| 588 | |
| 3148 | 589 int file_number (void) { return rep ? rep->file_number () : -1; } |
| 3145 | 590 |
| 3340 | 591 bool is_valid (void) const { return (rep != 0); } |
| 592 | |
| 2117 | 593 bool ok (void) const { return rep && rep->ok (); } |
| 594 | |
| 3145 | 595 operator bool () const { return ok (); } |
| 2117 | 596 |
| 3523 | 597 std::string name (void) const; |
| 2117 | 598 |
| 3340 | 599 int mode (void) const; |
| 2117 | 600 |
| 3340 | 601 oct_mach_info::float_format float_format (void) const; |
| 2117 | 602 |
| 3523 | 603 static std::string mode_as_string (int mode); |
| 2117 | 604 |
| 6757 | 605 std::istream *input_stream (void) |
| 606 { | |
| 607 return rep ? rep->input_stream () : 0; | |
| 608 } | |
| 2902 | 609 |
| 6757 | 610 std::ostream *output_stream (void) |
| 611 { | |
| 612 return rep ? rep->output_stream () : 0; | |
| 613 } | |
| 2902 | 614 |
| 4889 | 615 void clearerr (void) { if (rep) rep->clearerr (); } |
| 616 | |
| 2117 | 617 private: |
| 618 | |
| 619 // The actual representation of this stream. | |
| 620 octave_base_stream *rep; | |
| 621 | |
| 5659 | 622 bool stream_ok (bool clear = true) const |
| 623 { | |
| 624 bool retval = true; | |
| 625 | |
| 626 if (rep) | |
| 10313 | 627 { |
| 628 if (clear) | |
| 629 rep->clear (); | |
| 630 } | |
| 5659 | 631 else |
| 10313 | 632 retval = false; |
| 5659 | 633 |
| 634 return retval; | |
| 635 } | |
| 4944 | 636 |
| 637 void invalid_operation (const std::string& who, const char *rw) | |
| 638 { | |
| 639 if (rep) | |
| 10313 | 640 rep->invalid_operation (who, rw); |
| 4944 | 641 } |
| 2117 | 642 }; |
| 643 | |
| 644 class | |
| 6109 | 645 OCTINTERP_API |
| 2117 | 646 octave_stream_list |
| 647 { | |
| 648 protected: | |
| 649 | |
|
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650 octave_stream_list (void) : list (), lookup_cache (list.end ()) { } |
| 2117 | 651 |
| 652 public: | |
| 653 | |
| 654 ~octave_stream_list (void) { } | |
| 655 | |
| 2926 | 656 static bool instance_ok (void); |
| 657 | |
| 6757 | 658 static int insert (octave_stream& os); |
| 2117 | 659 |
| 4468 | 660 static octave_stream |
| 661 lookup (int fid, const std::string& who = std::string ()); | |
| 662 | |
| 663 static octave_stream | |
| 664 lookup (const octave_value& fid, const std::string& who = std::string ()); | |
| 2117 | 665 |
| 3523 | 666 static int remove (int fid, const std::string& who = std::string ()); |
| 3341 | 667 static int remove (const octave_value& fid, |
| 10313 | 668 const std::string& who = std::string ()); |
| 2117 | 669 |
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parents:
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diff
changeset
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670 static void clear (bool flush = true); |
| 2117 | 671 |
| 672 static string_vector get_info (int fid); | |
| 673 static string_vector get_info (const octave_value& fid); | |
| 674 | |
| 3523 | 675 static std::string list_open_files (void); |
| 2117 | 676 |
| 677 static octave_value open_file_numbers (void); | |
| 678 | |
| 2609 | 679 static int get_file_number (const octave_value& fid); |
| 680 | |
| 2117 | 681 private: |
| 682 | |
| 6757 | 683 typedef std::map<int, octave_stream> ostrl_map; |
| 2117 | 684 |
| 6757 | 685 ostrl_map list; |
| 2117 | 686 |
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parents:
7017
diff
changeset
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687 mutable ostrl_map::const_iterator lookup_cache; |
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5d5db7a347c6
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parents:
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diff
changeset
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688 |
| 2117 | 689 static octave_stream_list *instance; |
| 690 | |
| 6757 | 691 int do_insert (octave_stream& os); |
| 2117 | 692 |
| 3523 | 693 octave_stream do_lookup (int fid, const std::string& who = std::string ()) const; |
| 3341 | 694 octave_stream do_lookup (const octave_value& fid, |
| 10313 | 695 const std::string& who = std::string ()) const; |
| 2117 | 696 |
| 3523 | 697 int do_remove (int fid, const std::string& who = std::string ()); |
| 698 int do_remove (const octave_value& fid, const std::string& who = std::string ()); | |
| 2117 | 699 |
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parents:
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changeset
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700 void do_clear (bool flush = true); |
| 2117 | 701 |
| 702 string_vector do_get_info (int fid) const; | |
| 703 string_vector do_get_info (const octave_value& fid) const; | |
| 704 | |
| 3523 | 705 std::string do_list_open_files (void) const; |
| 2117 | 706 |
| 707 octave_value do_open_file_numbers (void) const; | |
| 708 | |
| 2609 | 709 int do_get_file_number (const octave_value& fid) const; |
| 2117 | 710 }; |
| 711 | |
| 712 #endif |