Mercurial > octave-nkf
annotate libinterp/corefcn/oct-stream.h @ 20595:c1a6c31ac29a
eliminate more simple uses of error_state
* ov-classdef.cc: Eliminate simple uses of error_state.
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Tue, 06 Oct 2015 00:20:02 -0400 |
| parents | 44eb1102f8a8 |
| children |
| rev | line source |
|---|---|
| 2117 | 1 /* |
| 2 | |
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3 Copyright (C) 1996-2015 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 | |
|
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23 #if !defined (octave_oct_stream_h) |
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24 #define octave_oct_stream_h 1 |
| 2117 | 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> |
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34 #include <list> |
| 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" |
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41 #include "oct-refcount.h" |
| 2117 | 42 |
| 3640 | 43 class |
| 6109 | 44 OCTINTERP_API |
| 2117 | 45 scanf_format_elt |
| 46 { | |
| 3640 | 47 public: |
| 48 | |
| 3483 | 49 enum special_conversion |
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50 { |
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51 whitespace_conversion = 1, |
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52 literal_conversion = 2, |
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53 null = 3 |
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54 }; |
| 3483 | 55 |
| 2215 | 56 scanf_format_elt (const char *txt = 0, int w = 0, bool d = false, |
| 10313 | 57 char typ = '\0', char mod = '\0', |
| 58 const std::string& ch_class = std::string ()) | |
| 3640 | 59 : text (strsave (txt)), width (w), discard (d), type (typ), |
| 60 modifier (mod), char_class (ch_class) { } | |
| 61 | |
| 62 scanf_format_elt (const scanf_format_elt& e) | |
| 63 : text (strsave (e.text)), width (e.width), discard (e.discard), | |
| 64 type (e.type), modifier (e.modifier), char_class (e.char_class) { } | |
| 2117 | 65 |
| 3640 | 66 scanf_format_elt& operator = (const scanf_format_elt& e) |
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67 { |
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68 if (this != &e) |
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69 { |
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70 text = strsave (e.text); |
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71 width = e.width; |
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72 discard = e.discard; |
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73 type = e.type; |
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74 modifier = e.modifier; |
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75 char_class = e.char_class; |
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76 } |
| 2117 | 77 |
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78 return *this; |
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79 } |
| 3640 | 80 |
| 81 ~scanf_format_elt (void) { delete [] text; } | |
| 82 | |
| 83 // The C-style format string. | |
| 2117 | 84 const char *text; |
| 3640 | 85 |
| 86 // The maximum field width. | |
| 2215 | 87 int width; |
| 3640 | 88 |
| 89 // TRUE if we are not storing the result of this conversion. | |
| 2117 | 90 bool discard; |
| 3640 | 91 |
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92 // Type of conversion -- 'd', 'i', 'o', 'u', 'x', 'e', 'f', 'g', |
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93 // 'c', 's', 'p', '%', or '['. |
| 2117 | 94 char type; |
| 3640 | 95 |
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96 // A length modifier -- 'h', 'l', or 'L'. |
| 2117 | 97 char modifier; |
| 3640 | 98 |
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99 // The class of characters in a '[' format. |
| 3523 | 100 std::string char_class; |
| 2117 | 101 }; |
| 102 | |
| 103 class | |
| 6109 | 104 OCTINTERP_API |
| 2117 | 105 scanf_format_list |
| 106 { | |
| 107 public: | |
| 108 | |
| 3523 | 109 scanf_format_list (const std::string& fmt = std::string ()); |
| 2117 | 110 |
| 111 ~scanf_format_list (void); | |
| 112 | |
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113 octave_idx_type num_conversions (void) { return nconv; } |
| 2117 | 114 |
| 2215 | 115 // The length can be different than the number of conversions. |
| 116 // For example, "x %d y %d z" has 2 conversions but the length of | |
| 117 // the list is 3 because of the characters that appear after the | |
| 118 // last conversion. | |
| 119 | |
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120 octave_idx_type length (void) { return list.numel (); } |
| 2215 | 121 |
| 2117 | 122 const scanf_format_elt *first (void) |
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123 { |
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124 curr_idx = 0; |
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125 return current (); |
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126 } |
| 2117 | 127 |
| 128 const scanf_format_elt *current (void) const | |
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129 { return list.numel () > 0 ? list.elem (curr_idx) : 0; } |
| 2117 | 130 |
| 3640 | 131 const scanf_format_elt *next (bool cycle = true) |
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132 { |
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133 static scanf_format_elt dummy |
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134 (0, 0, false, scanf_format_elt::null, '\0', ""); |
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135 |
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136 curr_idx++; |
| 3640 | 137 |
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138 if (curr_idx >= list.numel ()) |
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139 { |
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140 if (cycle) |
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141 curr_idx = 0; |
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142 else |
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143 return &dummy; |
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144 } |
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145 |
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146 return current (); |
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147 } |
| 2117 | 148 |
| 149 void printme (void) const; | |
| 150 | |
| 151 bool ok (void) const { return (nconv >= 0); } | |
| 152 | |
| 3145 | 153 operator bool () const { return ok (); } |
| 2117 | 154 |
| 155 bool all_character_conversions (void); | |
| 156 | |
| 157 bool all_numeric_conversions (void); | |
| 158 | |
| 159 private: | |
| 160 | |
| 3642 | 161 // Number of conversions specified by this format string, or -1 if |
| 2117 | 162 // invalid conversions have been found. |
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163 octave_idx_type nconv; |
| 2117 | 164 |
| 165 // Index to current element; | |
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166 octave_idx_type curr_idx; |
| 2117 | 167 |
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168 // FIXME: maybe LIST should be a std::list object? |
| 2117 | 169 // List of format elements. |
| 170 Array<scanf_format_elt*> list; | |
| 171 | |
| 172 // Temporary buffer. | |
| 5765 | 173 std::ostringstream *buf; |
| 2117 | 174 |
| 2215 | 175 void add_elt_to_list (int width, bool discard, char type, char modifier, |
| 10313 | 176 octave_idx_type& num_elts, |
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177 const std::string& char_class = std::string ()); |
| 2117 | 178 |
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179 void process_conversion (const std::string& s, size_t& i, size_t n, |
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180 int& width, bool& discard, char& type, |
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181 char& modifier, octave_idx_type& num_elts); |
| 2117 | 182 |
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183 int finish_conversion (const std::string& s, size_t& i, size_t n, |
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184 int& width, bool discard, char& type, |
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185 char modifier, octave_idx_type& num_elts); |
| 2117 | 186 // No copying! |
| 187 | |
| 188 scanf_format_list (const scanf_format_list&); | |
| 189 | |
| 190 scanf_format_list& operator = (const scanf_format_list&); | |
| 191 }; | |
| 192 | |
| 3640 | 193 class |
| 2117 | 194 printf_format_elt |
| 195 { | |
| 3640 | 196 public: |
| 197 | |
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198 printf_format_elt (const char *txt = 0, int n = 0, int w = -1, |
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199 int p = -1, const std::string& f = std::string (), |
| 10313 | 200 char typ = '\0', char mod = '\0') |
| 3640 | 201 : text (strsave (txt)), args (n), fw (w), prec (p), flags (f), |
| 202 type (typ), modifier (mod) { } | |
| 203 | |
| 204 printf_format_elt (const printf_format_elt& e) | |
| 205 : text (strsave (e.text)), args (e.args), fw (e.fw), prec (e.prec), | |
| 206 flags (e.flags), type (e.type), modifier (e.modifier) { } | |
| 207 | |
| 208 printf_format_elt& operator = (const printf_format_elt& e) | |
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209 { |
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210 if (this != &e) |
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211 { |
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212 text = strsave (e.text); |
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213 args = e.args; |
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214 fw = e.fw; |
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215 prec = e.prec; |
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216 flags = e.flags; |
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217 type = e.type; |
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218 modifier = e.modifier; |
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219 } |
| 2117 | 220 |
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221 return *this; |
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222 } |
| 2117 | 223 |
| 3640 | 224 ~printf_format_elt (void) { delete [] text; } |
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225 |
| 3640 | 226 // The C-style format string. |
| 2117 | 227 const char *text; |
| 3640 | 228 |
| 229 // How many args do we expect to consume? | |
| 2117 | 230 int args; |
| 3640 | 231 |
| 232 // Field width. | |
| 233 int fw; | |
| 234 | |
| 235 // Precision. | |
| 236 int prec; | |
| 237 | |
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238 // Flags -- '-', '+', ' ', '0', or '#'. |
| 3642 | 239 std::string flags; |
| 3640 | 240 |
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241 // Type of conversion -- 'd', 'i', 'o', 'x', 'X', 'u', 'c', 's', |
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242 // 'f', 'e', 'E', 'g', 'G', 'p', or '%' |
| 2117 | 243 char type; |
| 3640 | 244 |
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245 // A length modifier -- 'h', 'l', or 'L'. |
| 2117 | 246 char modifier; |
| 247 }; | |
| 248 | |
| 249 class | |
| 6109 | 250 OCTINTERP_API |
| 2117 | 251 printf_format_list |
| 252 { | |
| 253 public: | |
| 254 | |
| 3523 | 255 printf_format_list (const std::string& fmt = std::string ()); |
| 2117 | 256 |
| 257 ~printf_format_list (void); | |
| 258 | |
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259 octave_idx_type num_conversions (void) { return nconv; } |
| 2117 | 260 |
| 261 const printf_format_elt *first (void) | |
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262 { |
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263 curr_idx = 0; |
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264 return current (); |
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265 } |
| 2117 | 266 |
| 267 const printf_format_elt *current (void) const | |
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268 { return list.numel () > 0 ? list.elem (curr_idx) : 0; } |
| 2117 | 269 |
| 3640 | 270 const printf_format_elt *next (bool cycle = true) |
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271 { |
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272 curr_idx++; |
| 3640 | 273 |
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274 if (curr_idx >= list.numel ()) |
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275 { |
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276 if (cycle) |
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277 curr_idx = 0; |
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278 else |
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279 return 0; |
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280 } |
| 3640 | 281 |
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282 return current (); |
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283 } |
| 2117 | 284 |
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285 bool last_elt_p (void) { return (curr_idx + 1 == list.numel ()); } |
| 3640 | 286 |
| 2117 | 287 void printme (void) const; |
| 288 | |
| 289 bool ok (void) const { return (nconv >= 0); } | |
| 290 | |
| 3145 | 291 operator bool () const { return ok (); } |
| 2117 | 292 |
| 293 private: | |
| 294 | |
| 3642 | 295 // Number of conversions specified by this format string, or -1 if |
| 2117 | 296 // invalid conversions have been found. |
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297 octave_idx_type nconv; |
| 2117 | 298 |
| 299 // Index to current element; | |
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300 octave_idx_type curr_idx; |
| 2117 | 301 |
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302 // FIXME: maybe LIST should be a std::list object? |
| 2117 | 303 // List of format elements. |
| 304 Array<printf_format_elt*> list; | |
| 305 | |
| 306 // Temporary buffer. | |
| 5765 | 307 std::ostringstream *buf; |
| 2117 | 308 |
| 3640 | 309 void add_elt_to_list (int args, const std::string& flags, int fw, |
| 10313 | 310 int prec, char type, char modifier, |
| 311 octave_idx_type& num_elts); | |
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312 |
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313 void process_conversion (const std::string& s, size_t& i, size_t n, |
| 10313 | 314 int& args, std::string& flags, int& fw, |
| 315 int& prec, char& modifier, char& type, | |
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316 octave_idx_type& num_elts); |
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317 |
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318 void finish_conversion (const std::string& s, size_t& i, int args, |
| 10313 | 319 const std::string& flags, int fw, int prec, |
| 320 char modifier, char& type, | |
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321 octave_idx_type& num_elts); |
| 2117 | 322 |
| 323 // No copying! | |
| 324 | |
| 325 printf_format_list (const printf_format_list&); | |
| 326 | |
| 327 printf_format_list& operator = (const printf_format_list&); | |
| 328 }; | |
| 329 | |
| 330 // Provide an interface for Octave streams. | |
| 331 | |
| 332 class | |
| 6109 | 333 OCTINTERP_API |
| 2117 | 334 octave_base_stream |
| 335 { | |
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336 friend class octave_stream; |
| 2117 | 337 |
| 338 public: | |
| 339 | |
| 3544 | 340 octave_base_stream (std::ios::openmode arg_md = std::ios::in|std::ios::out, |
| 10313 | 341 oct_mach_info::float_format ff |
| 342 = oct_mach_info::native_float_format ()) | |
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343 : count (0), md (arg_md), flt_fmt (ff), fail (false), open_state (true), |
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344 errmsg () |
| 3340 | 345 { } |
| 2117 | 346 |
| 347 virtual ~octave_base_stream (void) { } | |
| 348 | |
| 349 // The remaining functions are not specific to input or output only, | |
| 350 // and must be provided by the derived classes. | |
| 351 | |
| 352 // Position a stream at OFFSET relative to ORIGIN. | |
| 353 | |
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354 virtual int seek (off_t offset, int origin) = 0; |
| 2117 | 355 |
| 356 // Return current stream position. | |
| 357 | |
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358 virtual off_t tell (void) = 0; |
| 2117 | 359 |
| 3340 | 360 // Return TRUE if EOF has been reached on this stream. |
| 2117 | 361 |
| 362 virtual bool eof (void) const = 0; | |
| 363 | |
| 364 // The name of the file. | |
| 365 | |
| 3523 | 366 virtual std::string name (void) const = 0; |
| 2117 | 367 |
| 368 // If the derived class provides this function and it returns a | |
| 369 // pointer to a valid istream, scanf(), read(), getl(), and gets() | |
| 370 // will automatically work for this stream. | |
| 371 | |
| 3523 | 372 virtual std::istream *input_stream (void) { return 0; } |
| 2117 | 373 |
| 374 // If the derived class provides this function and it returns a | |
| 375 // pointer to a valid ostream, flush(), write(), and printf() will | |
| 376 // automatically work for this stream. | |
| 377 | |
| 3523 | 378 virtual std::ostream *output_stream (void) { return 0; } |
| 2117 | 379 |
| 3340 | 380 // Return TRUE if this stream is open. |
| 381 | |
| 382 bool is_open (void) const { return open_state; } | |
| 383 | |
| 3652 | 384 virtual void do_close (void) { } |
| 385 | |
| 386 void close (void) | |
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387 { |
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388 if (is_open ()) |
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389 { |
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390 open_state = false; |
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391 do_close (); |
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392 } |
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393 } |
| 3340 | 394 |
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395 virtual int file_number (void) const |
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396 { |
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397 // Kluge alert! |
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398 |
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399 if (name () == "stdin") |
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400 return 0; |
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401 else if (name () == "stdout") |
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402 return 1; |
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403 else if (name () == "stderr") |
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404 return 2; |
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405 else |
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406 return -1; |
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407 } |
| 3145 | 408 |
| 2117 | 409 bool ok (void) const { return ! fail; } |
| 410 | |
| 411 // Return current error message for this stream. | |
| 412 | |
| 3523 | 413 std::string error (bool clear, int& err_num); |
| 2117 | 414 |
| 415 protected: | |
| 416 | |
| 3340 | 417 int mode (void) const { return md; } |
| 2117 | 418 |
| 3340 | 419 oct_mach_info::float_format float_format (void) const { return flt_fmt; } |
| 2117 | 420 |
| 421 // Set current error state and set fail to TRUE. | |
| 422 | |
| 3523 | 423 void error (const std::string& msg); |
| 4468 | 424 void error (const std::string& who, const std::string& msg); |
| 2117 | 425 |
| 426 // Clear any error message and set fail to FALSE. | |
| 427 | |
| 428 void clear (void); | |
| 429 | |
| 4889 | 430 // Clear stream state. |
| 431 | |
| 432 void clearerr (void); | |
| 433 | |
| 2117 | 434 private: |
| 435 | |
| 3340 | 436 // A reference count. |
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437 octave_refcount<octave_idx_type> count; |
| 3340 | 438 |
| 2117 | 439 // The permission bits for the file. Should be some combination of |
| 3544 | 440 // std::ios::open_mode bits. |
| 2117 | 441 int md; |
| 442 | |
| 443 // Data format. | |
| 2317 | 444 oct_mach_info::float_format flt_fmt; |
| 2117 | 445 |
| 446 // TRUE if an error has occurred. | |
| 447 bool fail; | |
| 448 | |
| 3340 | 449 // TRUE if this stream is open. |
| 450 bool open_state; | |
| 451 | |
| 2117 | 452 // Should contain error message if fail is TRUE. |
| 3523 | 453 std::string errmsg; |
| 2117 | 454 |
| 455 // Functions that are defined for all input streams (input streams | |
| 456 // are those that define is). | |
| 457 | |
| 5275 | 458 std::string do_gets (octave_idx_type max_len, bool& err, bool strip_newline, |
| 10313 | 459 const std::string& who /* = "gets" */); |
| 2117 | 460 |
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461 std::string getl (octave_idx_type max_len, bool& err, |
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462 const std::string& who /* = "getl" */); |
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463 std::string gets (octave_idx_type max_len, bool& err, |
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464 const std::string& who /* = "gets" */); |
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465 off_t skipl (off_t count, bool& err, const std::string& who /* = "skipl" */); |
| 2117 | 466 |
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467 octave_value do_scanf (scanf_format_list& fmt_list, octave_idx_type nr, |
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468 octave_idx_type nc, |
| 10313 | 469 bool one_elt_size_spec, octave_idx_type& count, |
| 470 const std::string& who /* = "scanf" */); | |
| 2117 | 471 |
| 4468 | 472 octave_value scanf (const std::string& fmt, const Array<double>& size, |
| 10313 | 473 octave_idx_type& count, const std::string& who /* = "scanf" */); |
| 2117 | 474 |
| 4468 | 475 bool do_oscanf (const scanf_format_elt *elt, octave_value&, |
| 10313 | 476 const std::string& who /* = "scanf" */); |
| 2117 | 477 |
| 4468 | 478 octave_value_list oscanf (const std::string& fmt, |
| 10313 | 479 const std::string& who /* = "scanf" */); |
| 2215 | 480 |
| 2117 | 481 // Functions that are defined for all output streams (output streams |
| 482 // are those that define os). | |
| 483 | |
| 484 int flush (void); | |
| 485 | |
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486 int do_numeric_printf_conv (std::ostream& os, const printf_format_elt *elt, |
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487 int nsa, int sa_1, int sa_2, |
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488 const octave_value& val, |
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489 const std::string& who); |
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490 |
| 4468 | 491 int do_printf (printf_format_list& fmt_list, const octave_value_list& args, |
| 10313 | 492 const std::string& who /* = "printf" */); |
| 2117 | 493 |
| 4468 | 494 int printf (const std::string& fmt, const octave_value_list& args, |
| 10313 | 495 const std::string& who /* = "printf" */); |
| 2117 | 496 |
| 4468 | 497 int puts (const std::string& s, const std::string& who /* = "puts" */); |
| 2117 | 498 |
| 499 // We can always do this in terms of seek(), so the derived class | |
| 500 // only has to provide that. | |
| 501 | |
| 4468 | 502 void invalid_operation (const std::string& who, const char *rw); |
| 2117 | 503 |
| 504 // No copying! | |
| 505 | |
| 506 octave_base_stream (const octave_base_stream&); | |
| 507 | |
| 508 octave_base_stream& operator = (const octave_base_stream&); | |
| 509 }; | |
| 510 | |
| 511 class | |
| 6109 | 512 OCTINTERP_API |
| 2117 | 513 octave_stream |
| 514 { | |
| 515 public: | |
| 516 | |
| 3340 | 517 octave_stream (octave_base_stream *bs = 0); |
| 518 | |
| 519 ~octave_stream (void); | |
| 2117 | 520 |
| 3340 | 521 octave_stream (const octave_stream&); |
| 522 | |
| 523 octave_stream& operator = (const octave_stream&); | |
| 2117 | 524 |
| 525 int flush (void); | |
| 526 | |
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527 std::string getl (octave_idx_type max_len, bool& err, |
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528 const std::string& who /* = "getl" */); |
| 4468 | 529 std::string getl (const octave_value& max_len, bool& err, |
| 10313 | 530 const std::string& who /* = "getl" */); |
| 2117 | 531 |
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532 std::string gets (octave_idx_type max_len, bool& err, |
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533 const std::string& who /* = "gets" */); |
| 4468 | 534 std::string gets (const octave_value& max_len, bool& err, |
| 10313 | 535 const std::string& who /* = "gets" */); |
| 2117 | 536 |
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537 off_t skipl (off_t count, bool& err, const std::string& who /* = "skipl" */); |
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538 off_t skipl (const octave_value& count, bool& err, |
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539 const std::string& who /* = "skipl" */); |
| 9701 | 540 |
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541 int seek (off_t offset, int origin); |
| 2117 | 542 int seek (const octave_value& offset, const octave_value& origin); |
| 543 | |
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544 off_t tell (void); |
| 2117 | 545 |
| 546 int rewind (void); | |
| 547 | |
| 3340 | 548 bool is_open (void) const; |
| 549 | |
| 550 void close (void); | |
| 551 | |
| 5275 | 552 octave_value read (const Array<double>& size, octave_idx_type block_size, |
| 10313 | 553 oct_data_conv::data_type input_type, |
| 554 oct_data_conv::data_type output_type, | |
| 555 octave_idx_type skip, oct_mach_info::float_format flt_fmt, | |
| 556 octave_idx_type& count); | |
| 2117 | 557 |
| 5275 | 558 octave_idx_type write (const octave_value& data, octave_idx_type block_size, |
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559 oct_data_conv::data_type output_type, |
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560 octave_idx_type skip, |
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561 oct_mach_info::float_format flt_fmt); |
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562 |
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563 bool write_bytes (const void *data, size_t n_elts); |
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564 |
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565 bool skip_bytes (size_t n_elts); |
| 4944 | 566 |
| 567 template <class T> | |
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568 octave_idx_type write (const Array<T>& data, octave_idx_type block_size, |
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569 oct_data_conv::data_type output_type, |
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570 octave_idx_type skip, |
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571 oct_mach_info::float_format flt_fmt); |
| 2117 | 572 |
| 4468 | 573 octave_value scanf (const std::string& fmt, const Array<double>& size, |
| 10313 | 574 octave_idx_type& count, const std::string& who /* = "scanf" */); |
| 2117 | 575 |
| 5279 | 576 octave_value scanf (const octave_value& fmt, const Array<double>& size, |
| 10313 | 577 octave_idx_type& count, const std::string& who /* = "scanf" */); |
| 5279 | 578 |
| 4468 | 579 octave_value_list oscanf (const std::string& fmt, |
| 10313 | 580 const std::string& who /* = "scanf" */); |
| 2215 | 581 |
| 5279 | 582 octave_value_list oscanf (const octave_value& fmt, |
| 10313 | 583 const std::string& who /* = "scanf" */); |
| 5279 | 584 |
| 4468 | 585 int printf (const std::string& fmt, const octave_value_list& args, |
| 10313 | 586 const std::string& who /* = "printf" */); |
| 2117 | 587 |
| 5279 | 588 int printf (const octave_value& fmt, const octave_value_list& args, |
| 10313 | 589 const std::string& who /* = "printf" */); |
| 5279 | 590 |
| 4468 | 591 int puts (const std::string& s, const std::string& who /* = "puts" */); |
| 592 int puts (const octave_value& s, const std::string& who /* = "puts" */); | |
| 2117 | 593 |
| 594 bool eof (void) const; | |
| 595 | |
| 3523 | 596 std::string error (bool clear, int& err_num); |
| 2117 | 597 |
| 3523 | 598 std::string error (bool clear = false) |
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599 { |
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600 int err_num; |
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601 return error (clear, err_num); |
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602 } |
| 2117 | 603 |
| 4799 | 604 // Set the error message and state. |
| 605 | |
| 606 void error (const std::string& msg) | |
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607 { |
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608 if (rep) |
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609 rep->error (msg); |
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610 } |
| 4799 | 611 |
| 612 void error (const char *msg) { error (std::string (msg)); } | |
| 613 | |
| 3148 | 614 int file_number (void) { return rep ? rep->file_number () : -1; } |
| 3145 | 615 |
| 3340 | 616 bool is_valid (void) const { return (rep != 0); } |
| 617 | |
| 2117 | 618 bool ok (void) const { return rep && rep->ok (); } |
| 619 | |
| 3145 | 620 operator bool () const { return ok (); } |
| 2117 | 621 |
| 3523 | 622 std::string name (void) const; |
| 2117 | 623 |
| 3340 | 624 int mode (void) const; |
| 2117 | 625 |
| 3340 | 626 oct_mach_info::float_format float_format (void) const; |
| 2117 | 627 |
| 3523 | 628 static std::string mode_as_string (int mode); |
| 2117 | 629 |
| 6757 | 630 std::istream *input_stream (void) |
| 631 { | |
| 632 return rep ? rep->input_stream () : 0; | |
| 633 } | |
| 2902 | 634 |
| 6757 | 635 std::ostream *output_stream (void) |
| 636 { | |
| 637 return rep ? rep->output_stream () : 0; | |
| 638 } | |
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639 |
| 4889 | 640 void clearerr (void) { if (rep) rep->clearerr (); } |
| 641 | |
| 2117 | 642 private: |
| 643 | |
| 644 // The actual representation of this stream. | |
| 645 octave_base_stream *rep; | |
| 646 | |
| 5659 | 647 bool stream_ok (bool clear = true) const |
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648 { |
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649 bool retval = true; |
| 5659 | 650 |
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651 if (rep) |
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652 { |
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653 if (clear) |
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654 rep->clear (); |
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655 } |
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656 else |
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657 retval = false; |
| 5659 | 658 |
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659 return retval; |
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660 } |
| 4944 | 661 |
| 662 void invalid_operation (const std::string& who, const char *rw) | |
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663 { |
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664 if (rep) |
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665 rep->invalid_operation (who, rw); |
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666 } |
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667 |
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668 octave_value |
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669 finalize_read (std::list<void *>& input_buf_list, |
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670 octave_idx_type input_buf_elts, |
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671 octave_idx_type elts_read, |
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672 octave_idx_type nr, octave_idx_type nc, |
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673 oct_data_conv::data_type input_type, |
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674 oct_data_conv::data_type output_type, |
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675 oct_mach_info::float_format ffmt); |
| 2117 | 676 }; |
| 677 | |
| 678 class | |
| 6109 | 679 OCTINTERP_API |
| 2117 | 680 octave_stream_list |
| 681 { | |
| 682 protected: | |
| 683 | |
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684 octave_stream_list (void) : list (), lookup_cache (list.end ()) { } |
| 2117 | 685 |
| 686 public: | |
| 687 | |
| 688 ~octave_stream_list (void) { } | |
| 689 | |
| 2926 | 690 static bool instance_ok (void); |
| 691 | |
| 6757 | 692 static int insert (octave_stream& os); |
| 2117 | 693 |
| 4468 | 694 static octave_stream |
| 695 lookup (int fid, const std::string& who = std::string ()); | |
| 696 | |
| 697 static octave_stream | |
| 698 lookup (const octave_value& fid, const std::string& who = std::string ()); | |
| 2117 | 699 |
| 3523 | 700 static int remove (int fid, const std::string& who = std::string ()); |
| 3341 | 701 static int remove (const octave_value& fid, |
| 10313 | 702 const std::string& who = std::string ()); |
| 2117 | 703 |
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704 static void clear (bool flush = true); |
| 2117 | 705 |
| 706 static string_vector get_info (int fid); | |
| 707 static string_vector get_info (const octave_value& fid); | |
| 708 | |
| 3523 | 709 static std::string list_open_files (void); |
| 2117 | 710 |
| 711 static octave_value open_file_numbers (void); | |
| 712 | |
| 2609 | 713 static int get_file_number (const octave_value& fid); |
| 714 | |
| 2117 | 715 private: |
| 716 | |
| 6757 | 717 typedef std::map<int, octave_stream> ostrl_map; |
| 2117 | 718 |
| 6757 | 719 ostrl_map list; |
| 2117 | 720 |
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721 mutable ostrl_map::const_iterator lookup_cache; |
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722 |
| 2117 | 723 static octave_stream_list *instance; |
| 724 | |
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725 static void cleanup_instance (void) { delete instance; instance = 0; } |
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726 |
| 6757 | 727 int do_insert (octave_stream& os); |
| 2117 | 728 |
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729 octave_stream do_lookup (int fid, |
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730 const std::string& who = std::string ()) const; |
| 3341 | 731 octave_stream do_lookup (const octave_value& fid, |
| 10313 | 732 const std::string& who = std::string ()) const; |
| 2117 | 733 |
| 3523 | 734 int do_remove (int fid, const std::string& who = std::string ()); |
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735 int do_remove (const octave_value& fid, |
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736 const std::string& who = std::string ()); |
| 2117 | 737 |
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738 void do_clear (bool flush = true); |
| 2117 | 739 |
| 740 string_vector do_get_info (int fid) const; | |
| 741 string_vector do_get_info (const octave_value& fid) const; | |
| 742 | |
| 3523 | 743 std::string do_list_open_files (void) const; |
| 2117 | 744 |
| 745 octave_value do_open_file_numbers (void) const; | |
| 746 | |
| 2609 | 747 int do_get_file_number (const octave_value& fid) const; |
| 2117 | 748 }; |
| 749 | |
| 750 #endif |