Mercurial > octave-nkf
annotate src/oct-stream.h @ 11007:ffe58182db89
src/oct-stream.h (octave_base_stream::file_number): return 0, 1, and 2 for stdin, stdout, and stderr, -1 otherwise
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Tue, 21 Sep 2010 03:51:02 -0400 |
| parents | 594adb99a25e |
| children | fd0a3ac60b0e |
| rev | line source |
|---|---|
| 2117 | 1 /* |
| 2 | |
| 7017 | 3 Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, |
| 8920 | 4 2005, 2006, 2007, 2009 John W. Eaton |
| 2117 | 5 |
| 6 This file is part of Octave. | |
| 7 | |
| 8 Octave is free software; you can redistribute it and/or modify it | |
| 9 under the terms of the GNU General Public License as published by the | |
| 7016 | 10 Free Software Foundation; either version 3 of the License, or (at your |
| 11 option) any later version. | |
| 2117 | 12 |
| 13 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 7016 | 19 along with Octave; see the file COPYING. If not, see |
| 20 <http://www.gnu.org/licenses/>. | |
| 2117 | 21 |
| 22 */ | |
| 23 | |
| 24 #if !defined (octave_octave_stream_h) | |
| 25 #define octave_octave_stream_h 1 | |
| 26 | |
| 2877 | 27 class Matrix; |
| 28 class string_vector; | |
| 29 class octave_value; | |
| 30 class octave_value_list; | |
| 2117 | 31 |
|
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32 #include <iosfwd> |
| 5765 | 33 #include <sstream> |
| 2877 | 34 #include <string> |
| 6757 | 35 #include <map> |
| 2117 | 36 |
| 37 #include "Array.h" | |
| 2317 | 38 #include "data-conv.h" |
| 3640 | 39 #include "lo-utils.h" |
| 2317 | 40 #include "mach-info.h" |
| 2117 | 41 |
| 3640 | 42 class |
| 6109 | 43 OCTINTERP_API |
| 2117 | 44 scanf_format_elt |
| 45 { | |
| 3640 | 46 public: |
| 47 | |
| 3483 | 48 enum special_conversion |
| 49 { | |
| 50 whitespace_conversion = 1, | |
| 51 literal_conversion = 2 | |
| 52 }; | |
| 53 | |
| 2215 | 54 scanf_format_elt (const char *txt = 0, int w = 0, bool d = false, |
| 10313 | 55 char typ = '\0', char mod = '\0', |
| 56 const std::string& ch_class = std::string ()) | |
| 3640 | 57 : text (strsave (txt)), width (w), discard (d), type (typ), |
| 58 modifier (mod), char_class (ch_class) { } | |
| 59 | |
| 60 scanf_format_elt (const scanf_format_elt& e) | |
| 61 : text (strsave (e.text)), width (e.width), discard (e.discard), | |
| 62 type (e.type), modifier (e.modifier), char_class (e.char_class) { } | |
| 2117 | 63 |
| 3640 | 64 scanf_format_elt& operator = (const scanf_format_elt& e) |
| 65 { | |
| 66 if (this != &e) | |
| 10313 | 67 { |
| 68 text = strsave (e.text); | |
| 69 width = e.width; | |
| 70 discard = e.discard; | |
| 71 type = e.type; | |
| 72 modifier = e.modifier; | |
| 73 char_class = e.char_class; | |
| 74 } | |
| 2117 | 75 |
| 3640 | 76 return *this; |
| 77 } | |
| 78 | |
| 79 ~scanf_format_elt (void) { delete [] text; } | |
| 80 | |
| 81 // The C-style format string. | |
| 2117 | 82 const char *text; |
| 3640 | 83 |
| 84 // The maximum field width. | |
| 2215 | 85 int width; |
| 3640 | 86 |
| 87 // TRUE if we are not storing the result of this conversion. | |
| 2117 | 88 bool discard; |
| 3640 | 89 |
| 90 // Type of conversion -- `d', `i', `o', `u', `x', `e', `f', `g', | |
| 91 // `c', `s', `p', `%', or `['. | |
| 2117 | 92 char type; |
| 3640 | 93 |
| 94 // A length modifier -- `h', `l', or `L'. | |
| 2117 | 95 char modifier; |
| 3640 | 96 |
| 97 // The class of characters in a `[' format. | |
| 3523 | 98 std::string char_class; |
| 2117 | 99 }; |
| 100 | |
| 101 class | |
| 6109 | 102 OCTINTERP_API |
| 2117 | 103 scanf_format_list |
| 104 { | |
| 105 public: | |
| 106 | |
| 3523 | 107 scanf_format_list (const std::string& fmt = std::string ()); |
| 2117 | 108 |
| 109 ~scanf_format_list (void); | |
| 110 | |
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111 octave_idx_type num_conversions (void) { return nconv; } |
| 2117 | 112 |
| 2215 | 113 // The length can be different than the number of conversions. |
| 114 // For example, "x %d y %d z" has 2 conversions but the length of | |
| 115 // the list is 3 because of the characters that appear after the | |
| 116 // last conversion. | |
| 117 | |
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118 octave_idx_type length (void) { return list.length (); } |
| 2215 | 119 |
| 2117 | 120 const scanf_format_elt *first (void) |
| 121 { | |
| 122 curr_idx = 0; | |
| 123 return current (); | |
| 124 } | |
| 125 | |
| 126 const scanf_format_elt *current (void) const | |
| 127 { return list.length () > 0 ? list.elem (curr_idx) : 0; } | |
| 128 | |
| 3640 | 129 const scanf_format_elt *next (bool cycle = true) |
| 2117 | 130 { |
| 131 curr_idx++; | |
| 3640 | 132 |
| 2117 | 133 if (curr_idx >= list.length ()) |
| 10313 | 134 { |
| 135 if (cycle) | |
| 136 curr_idx = 0; | |
| 137 else | |
| 138 return 0; | |
| 139 } | |
| 2117 | 140 return current (); |
| 141 } | |
| 142 | |
| 143 void printme (void) const; | |
| 144 | |
| 145 bool ok (void) const { return (nconv >= 0); } | |
| 146 | |
| 3145 | 147 operator bool () const { return ok (); } |
| 2117 | 148 |
| 149 bool all_character_conversions (void); | |
| 150 | |
| 151 bool all_numeric_conversions (void); | |
| 152 | |
| 153 private: | |
| 154 | |
| 3642 | 155 // Number of conversions specified by this format string, or -1 if |
| 2117 | 156 // invalid conversions have been found. |
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157 octave_idx_type nconv; |
| 2117 | 158 |
| 159 // Index to current element; | |
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160 octave_idx_type curr_idx; |
| 2117 | 161 |
| 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 |
| 295 // List of format elements. | |
| 296 Array<printf_format_elt*> list; | |
| 297 | |
| 298 // Temporary buffer. | |
| 5765 | 299 std::ostringstream *buf; |
| 2117 | 300 |
| 3640 | 301 void add_elt_to_list (int args, const std::string& flags, int fw, |
| 10313 | 302 int prec, char type, char modifier, |
| 303 octave_idx_type& num_elts); | |
| 3640 | 304 |
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305 void process_conversion (const std::string& s, size_t& i, size_t n, |
| 10313 | 306 int& args, std::string& flags, int& fw, |
| 307 int& prec, char& modifier, char& type, | |
| 308 octave_idx_type& num_elts); | |
| 3640 | 309 |
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310 void finish_conversion (const std::string& s, size_t& i, int args, |
| 10313 | 311 const std::string& flags, int fw, int prec, |
| 312 char modifier, char& type, | |
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313 octave_idx_type& num_elts); |
| 2117 | 314 |
| 315 // No copying! | |
| 316 | |
| 317 printf_format_list (const printf_format_list&); | |
| 318 | |
| 319 printf_format_list& operator = (const printf_format_list&); | |
| 320 }; | |
| 321 | |
| 322 // Provide an interface for Octave streams. | |
| 323 | |
| 324 class | |
| 6109 | 325 OCTINTERP_API |
| 2117 | 326 octave_base_stream |
| 327 { | |
| 328 friend class octave_stream; | |
| 329 | |
| 330 public: | |
| 331 | |
| 3544 | 332 octave_base_stream (std::ios::openmode arg_md = std::ios::in|std::ios::out, |
| 10313 | 333 oct_mach_info::float_format ff |
| 334 = oct_mach_info::native_float_format ()) | |
| 3340 | 335 : count (0), md (arg_md), flt_fmt (ff), fail (false), open_state (true) |
| 336 { } | |
| 2117 | 337 |
| 338 virtual ~octave_base_stream (void) { } | |
| 339 | |
| 340 // The remaining functions are not specific to input or output only, | |
| 341 // and must be provided by the derived classes. | |
| 342 | |
| 343 // Position a stream at OFFSET relative to ORIGIN. | |
| 344 | |
| 4797 | 345 virtual int seek (long offset, int origin) = 0; |
| 2117 | 346 |
| 347 // Return current stream position. | |
| 348 | |
| 4797 | 349 virtual long tell (void) = 0; |
| 2117 | 350 |
| 3340 | 351 // Return TRUE if EOF has been reached on this stream. |
| 2117 | 352 |
| 353 virtual bool eof (void) const = 0; | |
| 354 | |
| 355 // The name of the file. | |
| 356 | |
| 3523 | 357 virtual std::string name (void) const = 0; |
| 2117 | 358 |
| 359 // If the derived class provides this function and it returns a | |
| 360 // pointer to a valid istream, scanf(), read(), getl(), and gets() | |
| 361 // will automatically work for this stream. | |
| 362 | |
| 3523 | 363 virtual std::istream *input_stream (void) { return 0; } |
| 2117 | 364 |
| 365 // If the derived class provides this function and it returns a | |
| 366 // pointer to a valid ostream, flush(), write(), and printf() will | |
| 367 // automatically work for this stream. | |
| 368 | |
| 3523 | 369 virtual std::ostream *output_stream (void) { return 0; } |
| 2117 | 370 |
| 3340 | 371 // Return TRUE if this stream is open. |
| 372 | |
| 373 bool is_open (void) const { return open_state; } | |
| 374 | |
| 3652 | 375 virtual void do_close (void) { } |
| 376 | |
| 377 void close (void) | |
| 378 { | |
| 379 if (is_open ()) | |
| 10313 | 380 { |
| 381 open_state = false; | |
| 382 do_close (); | |
| 383 } | |
| 3652 | 384 } |
| 3340 | 385 |
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386 virtual int file_number (void) const |
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387 { |
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388 // Kluge alert! |
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389 |
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390 if (name () == "stdin") |
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391 return 0; |
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392 else if (name () == "stdout") |
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393 return 1; |
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394 else if (name () == "stderr") |
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395 return 2; |
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396 else |
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397 return -1; |
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398 } |
| 3145 | 399 |
| 2117 | 400 bool ok (void) const { return ! fail; } |
| 401 | |
| 402 // Return current error message for this stream. | |
| 403 | |
| 3523 | 404 std::string error (bool clear, int& err_num); |
| 2117 | 405 |
| 406 protected: | |
| 407 | |
| 3340 | 408 int mode (void) const { return md; } |
| 2117 | 409 |
| 3340 | 410 oct_mach_info::float_format float_format (void) const { return flt_fmt; } |
| 2117 | 411 |
| 412 // Set current error state and set fail to TRUE. | |
| 413 | |
| 3523 | 414 void error (const std::string& msg); |
| 4468 | 415 void error (const std::string& who, const std::string& msg); |
| 2117 | 416 |
| 417 // Clear any error message and set fail to FALSE. | |
| 418 | |
| 419 void clear (void); | |
| 420 | |
| 4889 | 421 // Clear stream state. |
| 422 | |
| 423 void clearerr (void); | |
| 424 | |
| 2117 | 425 private: |
| 426 | |
| 3340 | 427 // A reference count. |
| 5275 | 428 octave_idx_type count; |
| 3340 | 429 |
| 2117 | 430 // The permission bits for the file. Should be some combination of |
| 3544 | 431 // std::ios::open_mode bits. |
| 2117 | 432 int md; |
| 433 | |
| 434 // Data format. | |
| 2317 | 435 oct_mach_info::float_format flt_fmt; |
| 2117 | 436 |
| 437 // TRUE if an error has occurred. | |
| 438 bool fail; | |
| 439 | |
| 3340 | 440 // TRUE if this stream is open. |
| 441 bool open_state; | |
| 442 | |
| 2117 | 443 // Should contain error message if fail is TRUE. |
| 3523 | 444 std::string errmsg; |
| 2117 | 445 |
| 446 // Functions that are defined for all input streams (input streams | |
| 447 // are those that define is). | |
| 448 | |
| 5275 | 449 std::string do_gets (octave_idx_type max_len, bool& err, bool strip_newline, |
| 10313 | 450 const std::string& who /* = "gets" */); |
| 2117 | 451 |
| 5275 | 452 std::string getl (octave_idx_type max_len, bool& err, const std::string& who /* = "getl" */); |
| 453 std::string gets (octave_idx_type max_len, bool& err, const std::string& who /* = "gets" */); | |
| 9701 | 454 long skipl (long count, bool& err, const std::string& who /* = "skipl" */); |
| 2117 | 455 |
| 5275 | 456 octave_value do_scanf (scanf_format_list& fmt_list, octave_idx_type nr, octave_idx_type nc, |
| 10313 | 457 bool one_elt_size_spec, octave_idx_type& count, |
| 458 const std::string& who /* = "scanf" */); | |
| 2117 | 459 |
| 4468 | 460 octave_value scanf (const std::string& fmt, const Array<double>& size, |
| 10313 | 461 octave_idx_type& count, const std::string& who /* = "scanf" */); |
| 2117 | 462 |
| 4468 | 463 bool do_oscanf (const scanf_format_elt *elt, octave_value&, |
| 10313 | 464 const std::string& who /* = "scanf" */); |
| 2117 | 465 |
| 4468 | 466 octave_value_list oscanf (const std::string& fmt, |
| 10313 | 467 const std::string& who /* = "scanf" */); |
| 2215 | 468 |
| 2117 | 469 // Functions that are defined for all output streams (output streams |
| 470 // are those that define os). | |
| 471 | |
| 472 int flush (void); | |
| 473 | |
| 4468 | 474 int do_printf (printf_format_list& fmt_list, const octave_value_list& args, |
| 10313 | 475 const std::string& who /* = "printf" */); |
| 2117 | 476 |
| 4468 | 477 int printf (const std::string& fmt, const octave_value_list& args, |
| 10313 | 478 const std::string& who /* = "printf" */); |
| 2117 | 479 |
| 4468 | 480 int puts (const std::string& s, const std::string& who /* = "puts" */); |
| 2117 | 481 |
| 482 // We can always do this in terms of seek(), so the derived class | |
| 483 // only has to provide that. | |
| 484 | |
| 4468 | 485 void invalid_operation (const std::string& who, const char *rw); |
| 2117 | 486 |
| 487 // No copying! | |
| 488 | |
| 489 octave_base_stream (const octave_base_stream&); | |
| 490 | |
| 491 octave_base_stream& operator = (const octave_base_stream&); | |
| 492 }; | |
| 493 | |
| 494 class | |
| 6109 | 495 OCTINTERP_API |
| 2117 | 496 octave_stream |
| 497 { | |
| 498 public: | |
| 499 | |
| 3340 | 500 octave_stream (octave_base_stream *bs = 0); |
| 501 | |
| 502 ~octave_stream (void); | |
| 2117 | 503 |
| 3340 | 504 octave_stream (const octave_stream&); |
| 505 | |
| 506 octave_stream& operator = (const octave_stream&); | |
| 2117 | 507 |
| 508 int flush (void); | |
| 509 | |
| 5275 | 510 std::string getl (octave_idx_type max_len, bool& err, const std::string& who /* = "getl" */); |
| 4468 | 511 std::string getl (const octave_value& max_len, bool& err, |
| 10313 | 512 const std::string& who /* = "getl" */); |
| 2117 | 513 |
| 5275 | 514 std::string gets (octave_idx_type max_len, bool& err, const std::string& who /* = "gets" */); |
| 4468 | 515 std::string gets (const octave_value& max_len, bool& err, |
| 10313 | 516 const std::string& who /* = "gets" */); |
| 2117 | 517 |
| 9701 | 518 long skipl (long count, bool& err, const std::string& who /* = "skipl" */); |
| 519 long skipl (const octave_value& count, bool& err, const std::string& who /* = "skipl" */); | |
| 520 | |
| 4797 | 521 int seek (long offset, int origin); |
| 2117 | 522 int seek (const octave_value& offset, const octave_value& origin); |
| 523 | |
| 4797 | 524 long tell (void); |
| 2117 | 525 |
| 526 int rewind (void); | |
| 527 | |
| 3340 | 528 bool is_open (void) const; |
| 529 | |
| 530 void close (void); | |
| 531 | |
| 5275 | 532 octave_value read (const Array<double>& size, octave_idx_type block_size, |
| 10313 | 533 oct_data_conv::data_type input_type, |
| 534 oct_data_conv::data_type output_type, | |
| 535 octave_idx_type skip, oct_mach_info::float_format flt_fmt, | |
| 536 octave_idx_type& count); | |
| 2117 | 537 |
| 5275 | 538 octave_idx_type write (const octave_value& data, octave_idx_type block_size, |
| 10313 | 539 oct_data_conv::data_type output_type, |
| 540 octave_idx_type skip, oct_mach_info::float_format flt_fmt); | |
| 4944 | 541 |
| 542 template <class T> | |
| 5275 | 543 octave_idx_type write (const Array<T>&, octave_idx_type block_size, |
| 10313 | 544 oct_data_conv::data_type output_type, |
| 545 octave_idx_type skip, oct_mach_info::float_format flt_fmt); | |
| 2117 | 546 |
| 4468 | 547 octave_value scanf (const std::string& fmt, const Array<double>& size, |
| 10313 | 548 octave_idx_type& count, const std::string& who /* = "scanf" */); |
| 2117 | 549 |
| 5279 | 550 octave_value scanf (const octave_value& fmt, const Array<double>& size, |
| 10313 | 551 octave_idx_type& count, const std::string& who /* = "scanf" */); |
| 5279 | 552 |
| 4468 | 553 octave_value_list oscanf (const std::string& fmt, |
| 10313 | 554 const std::string& who /* = "scanf" */); |
| 2215 | 555 |
| 5279 | 556 octave_value_list oscanf (const octave_value& fmt, |
| 10313 | 557 const std::string& who /* = "scanf" */); |
| 5279 | 558 |
| 4468 | 559 int printf (const std::string& fmt, const octave_value_list& args, |
| 10313 | 560 const std::string& who /* = "printf" */); |
| 2117 | 561 |
| 5279 | 562 int printf (const octave_value& fmt, const octave_value_list& args, |
| 10313 | 563 const std::string& who /* = "printf" */); |
| 5279 | 564 |
| 4468 | 565 int puts (const std::string& s, const std::string& who /* = "puts" */); |
| 566 int puts (const octave_value& s, const std::string& who /* = "puts" */); | |
| 2117 | 567 |
| 568 bool eof (void) const; | |
| 569 | |
| 3523 | 570 std::string error (bool clear, int& err_num); |
| 2117 | 571 |
| 3523 | 572 std::string error (bool clear = false) |
| 2117 | 573 { |
| 2435 | 574 int err_num; |
| 575 return error (clear, err_num); | |
| 2117 | 576 } |
| 577 | |
| 4799 | 578 // Set the error message and state. |
| 579 | |
| 580 void error (const std::string& msg) | |
| 581 { | |
| 582 if (rep) | |
| 10313 | 583 rep->error (msg); |
| 4799 | 584 } |
| 585 | |
| 586 void error (const char *msg) { error (std::string (msg)); } | |
| 587 | |
| 3148 | 588 int file_number (void) { return rep ? rep->file_number () : -1; } |
| 3145 | 589 |
| 3340 | 590 bool is_valid (void) const { return (rep != 0); } |
| 591 | |
| 2117 | 592 bool ok (void) const { return rep && rep->ok (); } |
| 593 | |
| 3145 | 594 operator bool () const { return ok (); } |
| 2117 | 595 |
| 3523 | 596 std::string name (void) const; |
| 2117 | 597 |
| 3340 | 598 int mode (void) const; |
| 2117 | 599 |
| 3340 | 600 oct_mach_info::float_format float_format (void) const; |
| 2117 | 601 |
| 3523 | 602 static std::string mode_as_string (int mode); |
| 2117 | 603 |
| 6757 | 604 std::istream *input_stream (void) |
| 605 { | |
| 606 return rep ? rep->input_stream () : 0; | |
| 607 } | |
| 2902 | 608 |
| 6757 | 609 std::ostream *output_stream (void) |
| 610 { | |
| 611 return rep ? rep->output_stream () : 0; | |
| 612 } | |
| 2902 | 613 |
| 4889 | 614 void clearerr (void) { if (rep) rep->clearerr (); } |
| 615 | |
| 2117 | 616 private: |
| 617 | |
| 618 // The actual representation of this stream. | |
| 619 octave_base_stream *rep; | |
| 620 | |
| 5659 | 621 bool stream_ok (bool clear = true) const |
| 622 { | |
| 623 bool retval = true; | |
| 624 | |
| 625 if (rep) | |
| 10313 | 626 { |
| 627 if (clear) | |
| 628 rep->clear (); | |
| 629 } | |
| 5659 | 630 else |
| 10313 | 631 retval = false; |
| 5659 | 632 |
| 633 return retval; | |
| 634 } | |
| 4944 | 635 |
| 636 void invalid_operation (const std::string& who, const char *rw) | |
| 637 { | |
| 638 if (rep) | |
| 10313 | 639 rep->invalid_operation (who, rw); |
| 4944 | 640 } |
| 2117 | 641 }; |
| 642 | |
| 643 class | |
| 6109 | 644 OCTINTERP_API |
| 2117 | 645 octave_stream_list |
| 646 { | |
| 647 protected: | |
| 648 | |
|
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649 octave_stream_list (void) : list (), lookup_cache (list.end ()) { } |
| 2117 | 650 |
| 651 public: | |
| 652 | |
| 653 ~octave_stream_list (void) { } | |
| 654 | |
| 2926 | 655 static bool instance_ok (void); |
| 656 | |
| 6757 | 657 static int insert (octave_stream& os); |
| 2117 | 658 |
| 4468 | 659 static octave_stream |
| 660 lookup (int fid, const std::string& who = std::string ()); | |
| 661 | |
| 662 static octave_stream | |
| 663 lookup (const octave_value& fid, const std::string& who = std::string ()); | |
| 2117 | 664 |
| 3523 | 665 static int remove (int fid, const std::string& who = std::string ()); |
| 3341 | 666 static int remove (const octave_value& fid, |
| 10313 | 667 const std::string& who = std::string ()); |
| 2117 | 668 |
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parents:
7017
diff
changeset
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669 static void clear (bool flush = true); |
| 2117 | 670 |
| 671 static string_vector get_info (int fid); | |
| 672 static string_vector get_info (const octave_value& fid); | |
| 673 | |
| 3523 | 674 static std::string list_open_files (void); |
| 2117 | 675 |
| 676 static octave_value open_file_numbers (void); | |
| 677 | |
| 2609 | 678 static int get_file_number (const octave_value& fid); |
| 679 | |
| 2117 | 680 private: |
| 681 | |
| 6757 | 682 typedef std::map<int, octave_stream> ostrl_map; |
| 2117 | 683 |
| 6757 | 684 ostrl_map list; |
| 2117 | 685 |
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parents:
7017
diff
changeset
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686 mutable ostrl_map::const_iterator lookup_cache; |
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5d5db7a347c6
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parents:
7017
diff
changeset
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687 |
| 2117 | 688 static octave_stream_list *instance; |
| 689 | |
| 6757 | 690 int do_insert (octave_stream& os); |
| 2117 | 691 |
| 3523 | 692 octave_stream do_lookup (int fid, const std::string& who = std::string ()) const; |
| 3341 | 693 octave_stream do_lookup (const octave_value& fid, |
| 10313 | 694 const std::string& who = std::string ()) const; |
| 2117 | 695 |
| 3523 | 696 int do_remove (int fid, const std::string& who = std::string ()); |
| 697 int do_remove (const octave_value& fid, const std::string& who = std::string ()); | |
| 2117 | 698 |
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parents:
7017
diff
changeset
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699 void do_clear (bool flush = true); |
| 2117 | 700 |
| 701 string_vector do_get_info (int fid) const; | |
| 702 string_vector do_get_info (const octave_value& fid) const; | |
| 703 | |
| 3523 | 704 std::string do_list_open_files (void) const; |
| 2117 | 705 |
| 706 octave_value do_open_file_numbers (void) const; | |
| 707 | |
| 2609 | 708 int do_get_file_number (const octave_value& fid) const; |
| 2117 | 709 }; |
| 710 | |
| 711 #endif |