Mercurial > octave
annotate src/toplev.cc @ 7818:5640a70cbab1
Add Ffilemarker and fix for 'dbstep in'
| author | David Bateman <dbateman@free.fr> |
|---|---|
| date | Sun, 25 May 2008 15:04:37 +0200 |
| parents | 6b521b1e3631 |
| children | 59031cfe331b |
| rev | line source |
|---|---|
| 1683 | 1 /* |
| 2 | |
| 7017 | 3 Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
| 4 2004, 2005, 2006, 2007 John W. Eaton | |
| 1683 | 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. | |
| 1683 | 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/>. | |
| 1683 | 21 |
| 22 */ | |
| 23 | |
| 24 #ifdef HAVE_CONFIG_H | |
| 25 #include <config.h> | |
| 26 #endif | |
| 27 | |
| 28 #include <cassert> | |
| 4489 | 29 #include <cerrno> |
| 1683 | 30 #include <cstdlib> |
| 31 #include <cstring> | |
| 4221 | 32 #include <new> |
| 1683 | 33 |
| 3503 | 34 #include <fstream> |
| 35 #include <iostream> | |
| 5765 | 36 #include <sstream> |
| 1728 | 37 #include <string> |
| 38 | |
| 1683 | 39 #ifdef HAVE_UNISTD_H |
| 2442 | 40 #ifdef HAVE_SYS_TYPES_H |
| 1683 | 41 #include <sys/types.h> |
| 2442 | 42 #endif |
| 1683 | 43 #include <unistd.h> |
| 44 #endif | |
| 45 | |
| 2926 | 46 #include "cmd-edit.h" |
| 47 #include "file-ops.h" | |
| 1683 | 48 #include "lo-error.h" |
| 2370 | 49 #include "lo-mappers.h" |
| 3020 | 50 #include "oct-env.h" |
| 4153 | 51 #include "quit.h" |
| 1755 | 52 #include "str-vec.h" |
| 1683 | 53 |
| 2492 | 54 #include <defaults.h> |
| 1683 | 55 #include "defun.h" |
| 56 #include "error.h" | |
| 57 #include "file-io.h" | |
| 58 #include "input.h" | |
| 59 #include "lex.h" | |
| 2492 | 60 #include <oct-conf.h> |
| 1742 | 61 #include "oct-hist.h" |
| 2162 | 62 #include "oct-map.h" |
| 2862 | 63 #include "oct-obj.h" |
| 1683 | 64 #include "pager.h" |
| 65 #include "parse.h" | |
| 66 #include "pathsearch.h" | |
| 67 #include "procstream.h" | |
| 2370 | 68 #include "ov.h" |
| 2985 | 69 #include "pt-jump.h" |
| 2982 | 70 #include "pt-stmt.h" |
| 1683 | 71 #include "sighandlers.h" |
| 72 #include "sysdep.h" | |
| 2693 | 73 #include "syswait.h" |
| 1750 | 74 #include "toplev.h" |
| 1683 | 75 #include "unwind-prot.h" |
| 76 #include "utils.h" | |
| 77 #include "variables.h" | |
| 2492 | 78 #include <version.h> |
| 1683 | 79 |
| 3020 | 80 // TRUE means we are exiting via the builtin exit or quit functions. |
| 81 static bool quitting_gracefully = false; | |
| 1683 | 82 |
| 4217 | 83 // TRUE means we are ready to interpret commands, but not everything |
| 84 // is ready for interactive use. | |
| 85 bool octave_interpreter_ready = false; | |
| 86 | |
| 4172 | 87 // TRUE means we've processed all the init code and we are good to go. |
| 88 bool octave_initialized = false; | |
| 89 | |
| 1683 | 90 // Current command to execute. |
| 91 tree_statement_list *global_command = 0; | |
| 92 | |
| 4238 | 93 // Pointer to parent function that is currently being evaluated. |
| 4748 | 94 octave_function *curr_parent_function = 0; |
| 4238 | 95 |
| 5743 | 96 octave_call_stack *octave_call_stack::instance = 0; |
| 97 | |
|
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98 int |
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99 octave_call_stack::do_current_line (void) const |
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100 { |
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101 tree_statement *stmt = do_top_statement (); |
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102 |
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103 return stmt ? stmt->line () : -1; |
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104 } |
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105 |
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106 int |
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107 octave_call_stack::do_current_column (void) const |
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108 { |
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109 tree_statement *stmt = do_top_statement (); |
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110 |
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111 return stmt ? stmt->column () : -1; |
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112 } |
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113 |
| 5744 | 114 octave_user_script * |
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115 octave_call_stack::do_caller_user_script (difference_type q) const |
| 5744 | 116 { |
| 117 octave_user_script *retval = 0; | |
| 118 | |
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119 for (const_iterator p = cs.begin () + q; p != cs.end (); p++) |
| 5744 | 120 { |
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121 const call_stack_elt& elt = *p; |
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122 |
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123 octave_function *f = elt.fcn; |
| 5744 | 124 |
| 125 if (f && f->is_user_script ()) | |
| 126 { | |
| 127 retval = dynamic_cast<octave_user_script *> (f); | |
| 128 break; | |
| 129 } | |
| 130 } | |
| 131 | |
| 132 return retval; | |
| 133 } | |
| 134 | |
| 5743 | 135 octave_user_function * |
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136 octave_call_stack::do_caller_user_function (difference_type q) const |
| 5743 | 137 { |
| 138 octave_user_function *retval = 0; | |
| 139 | |
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140 for (const_iterator p = cs.begin () + q; p != cs.end (); p++) |
| 5743 | 141 { |
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142 const call_stack_elt& elt = *p; |
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143 |
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144 octave_function *f = elt.fcn; |
| 5743 | 145 |
| 146 if (f && f->is_user_function ()) | |
| 147 { | |
| 148 retval = dynamic_cast<octave_user_function *> (f); | |
| 149 break; | |
| 150 } | |
| 151 } | |
| 152 | |
| 153 return retval; | |
| 154 } | |
| 155 | |
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156 octave_user_code * |
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157 octave_call_stack::do_caller_user_code (difference_type q) const |
| 5744 | 158 { |
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159 octave_user_code *retval = 0; |
| 5744 | 160 |
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161 for (const_iterator p = cs.begin () + q; p != cs.end (); p++) |
| 5744 | 162 { |
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163 const call_stack_elt& elt = *p; |
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164 |
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165 octave_function *f = elt.fcn; |
| 5744 | 166 |
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167 if (f && f->is_user_code ()) |
| 5744 | 168 { |
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169 retval = dynamic_cast<octave_user_code *> (f); |
| 5744 | 170 break; |
| 171 } | |
| 172 } | |
| 173 | |
| 174 return retval; | |
| 175 } | |
| 176 | |
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177 Octave_map |
| 7736 | 178 octave_call_stack::do_backtrace (int n) const |
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179 { |
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180 Octave_map retval; |
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181 |
| 7736 | 182 int nframes = cs.size () - n; |
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183 |
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184 if (n >= 0 && nframes > 0) |
| 7736 | 185 { |
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186 Cell keys (6, 1); |
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187 |
| 7736 | 188 keys(0) = "file"; |
| 189 keys(1) = "name"; | |
| 190 keys(2) = "line"; | |
| 191 keys(3) = "column"; | |
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192 keys(4) = "scope"; |
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193 keys(5) = "context"; |
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194 |
| 7736 | 195 Cell file (nframes, 1); |
| 196 Cell name (nframes, 1); | |
| 197 Cell line (nframes, 1); | |
| 198 Cell column (nframes, 1); | |
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199 Cell scope (nframes, 1); |
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200 Cell context (nframes, 1); |
| 7736 | 201 |
| 202 octave_idx_type k = 0; | |
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203 |
| 7736 | 204 for (const_iterator p = cs.begin () + n; p != cs.end (); p++) |
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205 { |
| 7736 | 206 const call_stack_elt& elt = *p; |
| 207 | |
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208 scope(k) = elt.scope; |
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209 context(k) = elt.context; |
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210 |
| 7736 | 211 octave_function *f = elt.fcn; |
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212 |
| 7736 | 213 if (f) |
| 214 { | |
| 215 file(k) = f->fcn_file_name (); | |
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216 std::string parent_fcn_name = f->parent_fcn_name (); |
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217 if (parent_fcn_name == std::string ()) |
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218 name(k) = f->name (); |
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219 else |
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220 name(k) = f->parent_fcn_name () + Vfilemarker + f->name (); |
| 7736 | 221 |
| 222 tree_statement *stmt = elt.stmt; | |
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223 |
| 7736 | 224 if (stmt) |
| 225 { | |
| 226 line(k) = stmt->line (); | |
| 227 column(k) = stmt->column (); | |
| 228 } | |
| 229 else | |
| 230 { | |
| 231 line(k) = -1; | |
| 232 column(k) = -1; | |
| 233 } | |
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234 } |
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235 else |
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236 { |
| 7736 | 237 file(k) = "<unknown>"; |
| 238 name(k) = "<unknown>"; | |
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239 line(k) = -1; |
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240 column(k) = -1; |
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241 } |
| 7736 | 242 |
| 243 k++; | |
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244 } |
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245 |
| 7736 | 246 retval.assign ("file", file); |
| 247 retval.assign ("name", name); | |
| 248 retval.assign ("line", line); | |
| 249 retval.assign ("column", column); | |
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250 retval.assign ("scope", scope); |
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251 retval.assign ("context", context); |
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252 } |
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253 |
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254 return retval; |
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255 } |
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256 |
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257 bool |
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258 octave_call_stack::do_goto_frame (size_t n, bool verbose) |
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259 { |
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260 bool retval = false; |
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261 |
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262 if (n < cs.size ()) |
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263 { |
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264 retval = true; |
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265 |
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266 curr_frame = n; |
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267 |
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268 const call_stack_elt& elt = cs[n]; |
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269 |
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270 symbol_table::set_scope_and_context (elt.scope, elt.context); |
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271 |
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272 if (verbose) |
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273 { |
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274 octave_function *f = elt.fcn; |
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275 std::string nm = f ? f->name () : std::string ("<unknown>"); |
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276 |
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277 tree_statement *s = elt.stmt; |
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278 int l = -1; |
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279 int c = -1; |
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280 if (s) |
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281 { |
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282 l = s->line (); |
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283 c = s->column (); |
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284 } |
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285 |
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286 octave_stdout << "stopped in " << nm |
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287 << " at line " << l << " column " << c |
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288 << " (" << elt.scope << "[" << elt.context << "])" |
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289 << std::endl; |
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290 } |
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291 } |
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292 |
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293 return retval; |
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294 } |
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295 |
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296 bool |
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297 octave_call_stack::do_goto_frame_relative (int n, bool verbose) |
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298 { |
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299 bool retval = false; |
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300 |
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301 size_t sz = cs.size (); |
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302 |
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303 if (n == 0) |
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304 retval = true; |
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305 else if ((n > 0 && static_cast<size_t> (n) < sz - curr_frame) |
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306 || (n < 0 && static_cast<size_t> (-n) < curr_frame)) |
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307 retval = goto_frame (curr_frame + n, verbose); |
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308 |
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309 return retval; |
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310 } |
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311 |
| 5744 | 312 void |
| 4180 | 313 recover_from_exception (void) |
| 314 { | |
| 315 can_interrupt = true; | |
| 4182 | 316 octave_interrupt_immediately = 0; |
| 4180 | 317 octave_interrupt_state = 0; |
| 5142 | 318 octave_signal_caught = 0; |
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319 octave_exception_state = octave_no_exception; |
| 4180 | 320 octave_restore_signal_mask (); |
| 321 octave_catch_interrupts (); | |
| 322 } | |
| 323 | |
| 1907 | 324 int |
| 5189 | 325 main_loop (void) |
| 1907 | 326 { |
| 2016 | 327 octave_save_signal_mask (); |
| 328 | |
| 3020 | 329 can_interrupt = true; |
| 1907 | 330 |
| 5142 | 331 octave_signal_hook = octave_signal_handler; |
| 4429 | 332 octave_interrupt_hook = unwind_protect::run_all; |
| 333 octave_bad_alloc_hook = unwind_protect::run_all; | |
| 334 | |
| 2554 | 335 octave_catch_interrupts (); |
| 1907 | 336 |
| 4172 | 337 octave_initialized = true; |
| 338 | |
| 1907 | 339 // The big loop. |
| 340 | |
| 4153 | 341 int retval = 0; |
| 1907 | 342 do |
| 343 { | |
| 4180 | 344 try |
| 1907 | 345 { |
| 7336 | 346 symbol_table::reset_scope (); |
| 2620 | 347 |
| 4318 | 348 reset_error_handler (); |
| 349 | |
| 4153 | 350 reset_parser (); |
| 2620 | 351 |
| 4753 | 352 // This is the same as yyparse in parse.y. |
| 353 retval = octave_parse (); | |
| 2620 | 354 |
| 4153 | 355 if (retval == 0) |
| 356 { | |
| 357 if (global_command) | |
| 3804 | 358 { |
| 4153 | 359 global_command->eval (); |
| 3883 | 360 |
| 4153 | 361 delete global_command; |
| 3883 | 362 |
| 4153 | 363 global_command = 0; |
| 3883 | 364 |
| 4171 | 365 OCTAVE_QUIT; |
| 366 | |
| 3883 | 367 if (! (interactive || forced_interactive)) |
| 368 { | |
| 4207 | 369 bool quit = (tree_return_command::returning |
| 370 || tree_break_command::breaking); | |
| 4153 | 371 |
| 4207 | 372 if (tree_return_command::returning) |
| 373 tree_return_command::returning = 0; | |
| 4153 | 374 |
| 4207 | 375 if (tree_break_command::breaking) |
| 376 tree_break_command::breaking--; | |
| 4153 | 377 |
| 378 if (quit) | |
| 379 break; | |
| 380 } | |
| 381 | |
| 382 if (error_state) | |
| 383 { | |
| 384 if (! (interactive || forced_interactive)) | |
| 385 { | |
| 386 // We should exit with a non-zero status. | |
| 387 retval = 1; | |
| 388 break; | |
| 389 } | |
| 390 } | |
| 391 else | |
| 392 { | |
| 393 if (octave_completion_matches_called) | |
| 394 octave_completion_matches_called = false; | |
| 395 else | |
| 396 command_editor::increment_current_command_number (); | |
| 3883 | 397 } |
| 398 } | |
| 4153 | 399 else if (parser_end_of_input) |
| 400 break; | |
| 2620 | 401 } |
| 4153 | 402 } |
| 4182 | 403 catch (octave_interrupt_exception) |
| 4153 | 404 { |
| 4180 | 405 recover_from_exception (); |
| 5629 | 406 octave_stdout << "\n"; |
| 4180 | 407 } |
| 4181 | 408 catch (std::bad_alloc) |
| 4180 | 409 { |
| 410 recover_from_exception (); | |
| 411 std::cerr | |
| 6680 | 412 << "error: memory exhausted or requested size too large for range of Octave's index type -- trying to return to prompt" |
| 413 << std::endl; | |
| 1907 | 414 } |
| 415 } | |
| 416 while (retval == 0); | |
| 417 | |
| 418 return retval; | |
| 419 } | |
| 420 | |
| 1683 | 421 // Fix up things before exiting. |
| 422 | |
| 423 void | |
| 3162 | 424 clean_up_and_exit (int retval) |
| 425 { | |
| 3216 | 426 do_octave_atexit (); |
| 1683 | 427 |
| 5451 | 428 sysdep_cleanup (); |
| 429 | |
| 3162 | 430 exit (retval == EOF ? 0 : retval); |
| 1683 | 431 } |
| 432 | |
| 3180 | 433 DEFUN (quit, args, nargout, |
| 3332 | 434 "-*- texinfo -*-\n\ |
| 435 @deftypefn {Built-in Function} {} exit (@var{status})\n\ | |
| 436 @deftypefnx {Built-in Function} {} quit (@var{status})\n\ | |
| 437 Exit the current Octave session. If the optional integer value\n\ | |
| 438 @var{status} is supplied, pass that value to the operating system as the\n\ | |
| 6615 | 439 Octave's exit status. The default value is zero.\n\ |
| 3333 | 440 @end deftypefn") |
| 1683 | 441 { |
| 2086 | 442 octave_value_list retval; |
| 2068 | 443 |
| 3180 | 444 if (nargout == 0) |
| 2068 | 445 { |
| 3180 | 446 int exit_status = 0; |
| 447 | |
| 448 quitting_gracefully = true; | |
| 1683 | 449 |
| 3180 | 450 if (args.length () > 0) |
| 451 { | |
| 3202 | 452 int tmp = args(0).nint_value (); |
| 1683 | 453 |
| 3202 | 454 if (! error_state) |
| 455 exit_status = tmp; | |
| 3180 | 456 } |
| 457 | |
| 458 clean_up_and_exit (exit_status); | |
| 2068 | 459 } |
| 3180 | 460 else |
| 461 error ("quit: invalid number of output arguments"); | |
| 2068 | 462 |
| 1683 | 463 return retval; |
| 464 } | |
| 465 | |
| 466 DEFALIAS (exit, quit); | |
| 467 | |
| 1957 | 468 DEFUN (warranty, , , |
| 3446 | 469 "-*- texinfo -*-\n\ |
| 470 @deftypefn {Built-in Function} {} warranty ()\n\ | |
| 471 Describe the conditions for copying and distributing Octave.\n\ | |
| 472 @end deftypefn") | |
| 1683 | 473 { |
| 2086 | 474 octave_value_list retval; |
| 1683 | 475 |
| 3922 | 476 octave_stdout << "\n" \ |
| 477 OCTAVE_NAME_VERSION_AND_COPYRIGHT "\n\ | |
| 478 \n\ | |
| 1683 | 479 This program is free software; you can redistribute it and/or modify\n\ |
| 480 it under the terms of the GNU General Public License as published by\n\ | |
| 7016 | 481 the Free Software Foundation; either version 3 of the License, or\n\ |
| 1683 | 482 (at your option) any later version.\n\ |
| 483 \n\ | |
| 484 This program is distributed in the hope that it will be useful,\n\ | |
| 485 but WITHOUT ANY WARRANTY; without even the implied warranty of\n\ | |
| 486 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n\ | |
| 487 GNU General Public License for more details.\n\ | |
| 488 \n\ | |
| 489 You should have received a copy of the GNU General Public License\n\ | |
| 7016 | 490 along with this program. If not, see <http://www.gnu.org/licenses/>.\n\ |
| 1683 | 491 \n"; |
| 492 | |
| 493 return retval; | |
| 494 } | |
| 495 | |
| 496 // Execute a shell command. | |
| 497 | |
| 1965 | 498 static void |
| 499 cleanup_iprocstream (void *p) | |
| 500 { | |
| 3060 | 501 iprocstream *cmd = static_cast<iprocstream *> (p); |
| 502 | |
| 503 octave_child_list::remove (cmd->pid ()); | |
| 504 | |
| 505 delete cmd; | |
| 1965 | 506 } |
| 507 | |
| 6316 | 508 static int |
| 509 wait_for_input (int fid) | |
| 510 { | |
| 511 int retval = -1; | |
| 512 | |
| 513 #if defined (HAVE_SELECT) | |
| 514 if (fid >= 0) | |
| 515 { | |
| 516 fd_set set; | |
| 517 | |
| 518 FD_ZERO (&set); | |
| 519 FD_SET (fid, &set); | |
| 520 | |
| 521 retval = select (FD_SETSIZE, &set, 0, 0, 0); | |
| 522 } | |
| 523 #else | |
| 524 retval = 1; | |
| 525 #endif | |
| 526 | |
| 527 return retval; | |
| 528 } | |
| 529 | |
| 2086 | 530 static octave_value_list |
| 3523 | 531 run_command_and_return_output (const std::string& cmd_str) |
| 2083 | 532 { |
| 2086 | 533 octave_value_list retval; |
| 2083 | 534 |
| 535 iprocstream *cmd = new iprocstream (cmd_str.c_str ()); | |
| 536 | |
| 3060 | 537 if (cmd) |
| 2083 | 538 { |
| 3060 | 539 unwind_protect::add (cleanup_iprocstream, cmd); |
| 540 | |
| 541 if (*cmd) | |
| 542 { | |
| 6316 | 543 int fid = cmd->file_number (); |
| 2095 | 544 |
| 6316 | 545 std::ostringstream output_buf; |
| 4494 | 546 |
| 3060 | 547 char ch; |
| 3147 | 548 |
| 4489 | 549 for (;;) |
| 3147 | 550 { |
| 4489 | 551 if (cmd->get (ch)) |
| 552 output_buf.put (ch); | |
| 553 else | |
| 554 { | |
| 555 if (! cmd->eof () && errno == EAGAIN) | |
| 556 { | |
| 557 cmd->clear (); | |
| 3147 | 558 |
| 6316 | 559 if (wait_for_input (fid) != 1) |
| 560 break; | |
| 4489 | 561 } |
| 562 else | |
| 563 break; | |
| 564 } | |
| 3147 | 565 } |
| 566 | |
| 3252 | 567 int cmd_status = cmd->close (); |
| 2083 | 568 |
| 3060 | 569 if (WIFEXITED (cmd_status)) |
| 570 cmd_status = WEXITSTATUS (cmd_status); | |
| 571 else | |
| 572 cmd_status = 127; | |
| 2083 | 573 |
| 5659 | 574 retval(0) = (double) cmd_status; |
| 5765 | 575 retval(1) = output_buf.str (); |
| 3060 | 576 } |
| 577 | |
| 578 unwind_protect::run (); | |
| 2083 | 579 } |
| 580 else | |
| 581 error ("unable to start subprocess for `%s'", cmd_str.c_str ()); | |
| 582 | |
| 583 return retval; | |
| 584 } | |
| 585 | |
| 5285 | 586 enum system_exec_type { et_sync, et_async }; |
| 587 | |
| 1957 | 588 DEFUN (system, args, nargout, |
| 3301 | 589 "-*- texinfo -*-\n\ |
| 590 @deftypefn {Built-in Function} {} system (@var{string}, @var{return_output}, @var{type})\n\ | |
| 591 Execute a shell command specified by @var{string}. The second\n\ | |
| 592 argument is optional. If @var{type} is @code{\"async\"}, the process\n\ | |
| 593 is started in the background and the process id of the child process\n\ | |
| 594 is returned immediately. Otherwise, the process is started, and\n\ | |
| 595 Octave waits until it exits. If @var{type} argument is omitted, a\n\ | |
| 596 value of @code{\"sync\"} is assumed.\n\ | |
| 2083 | 597 \n\ |
| 3301 | 598 If two input arguments are given (the actual value of\n\ |
| 599 @var{return_output} is irrelevant) and the subprocess is started\n\ | |
| 600 synchronously, or if @var{system} is called with one input argument and\n\ | |
| 601 one or more output arguments, the output from the command is returned.\n\ | |
| 5097 | 602 Otherwise, if the subprocess is executed synchronously, its output is\n\ |
| 2321 | 603 sent to the standard output. To send the output of a command executed\n\ |
| 3301 | 604 with @var{system} through the pager, use a command like\n\ |
| 2321 | 605 \n\ |
| 3301 | 606 @example\n\ |
| 607 disp (system (cmd, 1));\n\ | |
| 608 @end example\n\ | |
| 2321 | 609 \n\ |
| 3301 | 610 @noindent\n\ |
| 2321 | 611 or\n\ |
| 612 \n\ | |
| 3301 | 613 @example\n\ |
| 614 printf (\"%s\n\", system (cmd, 1));\n\ | |
| 615 @end example\n\ | |
| 616 \n\ | |
| 5659 | 617 The @code{system} function can return two values. The first is the\n\ |
| 618 exit status of the command and the second is any output from the\n\ | |
| 619 command that was written to the standard output stream. For example,\n\ | |
| 3301 | 620 \n\ |
| 621 @example\n\ | |
| 5717 | 622 [status, output] = system (\"echo foo; exit 2\");\n\ |
| 3301 | 623 @end example\n\ |
| 624 \n\ | |
| 625 @noindent\n\ | |
| 626 will set the variable @code{output} to the string @samp{foo}, and the\n\ | |
| 627 variable @code{status} to the integer @samp{2}.\n\ | |
| 628 @end deftypefn") | |
| 1683 | 629 { |
| 2086 | 630 octave_value_list retval; |
| 1683 | 631 |
| 3834 | 632 unwind_protect::begin_frame ("Fsystem"); |
| 633 | |
| 1683 | 634 int nargin = args.length (); |
| 635 | |
| 2083 | 636 if (nargin > 0 && nargin < 4) |
| 1683 | 637 { |
| 5672 | 638 bool return_output = (nargout > 1 || nargin > 1); |
| 2083 | 639 |
| 3523 | 640 std::string cmd_str = args(0).string_value (); |
| 2083 | 641 |
| 5285 | 642 system_exec_type type = et_sync; |
| 2083 | 643 |
| 644 if (! error_state) | |
| 645 { | |
| 646 if (nargin > 2) | |
| 647 { | |
| 3523 | 648 std::string type_str = args(2).string_value (); |
| 1683 | 649 |
| 2083 | 650 if (! error_state) |
| 651 { | |
| 652 if (type_str == "sync") | |
| 5285 | 653 type = et_sync; |
| 2083 | 654 else if (type_str == "async") |
| 5285 | 655 type = et_async; |
| 2083 | 656 else |
| 657 error ("system: third arg must be \"sync\" or \"async\""); | |
| 658 } | |
| 659 else | |
| 660 error ("system: third argument must be a string"); | |
| 661 } | |
| 662 } | |
| 663 else | |
| 3523 | 664 error ("system: expecting std::string as first argument"); |
| 1683 | 665 |
| 2083 | 666 if (! error_state) |
| 667 { | |
| 7104 | 668 #if defined (__WIN32__) && ! defined (__CYGWIN__) |
| 669 // Work around weird double-quote handling on Windows systems. | |
| 670 if (type == et_sync) | |
| 671 cmd_str = "\"" + cmd_str + "\""; | |
| 672 #endif | |
| 673 | |
| 5285 | 674 if (type == et_async) |
| 2083 | 675 { |
| 6222 | 676 // FIXME -- maybe this should go in sysdep.cc? |
| 4086 | 677 #ifdef HAVE_FORK |
| 2083 | 678 pid_t pid = fork (); |
| 679 | |
| 680 if (pid < 0) | |
| 681 error ("system: fork failed -- can't create child process"); | |
| 682 else if (pid == 0) | |
| 683 { | |
| 5775 | 684 // FIXME -- should probably replace this |
| 3273 | 685 // call with something portable. |
| 686 | |
| 5510 | 687 execl ("/bin/sh", "sh", "-c", cmd_str.c_str (), |
| 688 static_cast<void *> (0)); | |
| 3273 | 689 |
| 690 panic_impossible (); | |
| 2083 | 691 } |
| 692 else | |
| 4254 | 693 retval(0) = pid; |
| 6222 | 694 #elif defined (__WIN32__) |
| 695 STARTUPINFO si; | |
| 696 PROCESS_INFORMATION pi; | |
| 697 ZeroMemory (&si, sizeof (si)); | |
| 698 ZeroMemory (&pi, sizeof (pi)); | |
| 699 OCTAVE_LOCAL_BUFFER (char, xcmd_str, cmd_str.length()+1); | |
| 6676 | 700 strcpy (xcmd_str, cmd_str.c_str ()); |
| 6222 | 701 |
| 702 if (! CreateProcess (0, xcmd_str, 0, 0, FALSE, 0, 0, 0, &si, &pi)) | |
| 703 error ("system: CreateProcess failed -- can't create child process"); | |
| 704 else | |
| 705 { | |
| 706 retval(0) = pi.dwProcessId; | |
| 707 CloseHandle (pi.hProcess); | |
| 708 CloseHandle (pi.hThread); | |
| 709 } | |
| 4086 | 710 #else |
| 711 error ("asynchronous system calls are not supported"); | |
| 712 #endif | |
| 2083 | 713 } |
| 2321 | 714 else if (return_output) |
| 715 retval = run_command_and_return_output (cmd_str); | |
| 2083 | 716 else |
| 2321 | 717 { |
| 718 int status = system (cmd_str.c_str ()); | |
| 719 | |
| 720 // The value in status is as returned by waitpid. If | |
| 721 // the process exited normally, extract the actual exit | |
| 722 // status of the command. Otherwise, return 127 as a | |
| 723 // failure code. | |
| 724 | |
| 2693 | 725 if (WIFEXITED (status)) |
| 726 status = WEXITSTATUS (status); | |
| 2321 | 727 |
| 4233 | 728 retval(0) = status; |
| 2321 | 729 } |
| 2083 | 730 } |
| 1683 | 731 } |
| 732 else | |
| 5823 | 733 print_usage (); |
| 1683 | 734 |
| 3834 | 735 unwind_protect::run_frame ("Fsystem"); |
| 736 | |
| 1683 | 737 return retval; |
| 738 } | |
| 739 | |
| 740 DEFALIAS (shell_cmd, system); | |
| 741 | |
| 5775 | 742 // FIXME -- this should really be static, but that causes |
| 2614 | 743 // problems on some systems. |
| 6680 | 744 std::list<std::string> octave_atexit_functions; |
| 2077 | 745 |
| 746 void | |
| 747 do_octave_atexit (void) | |
| 748 { | |
| 3216 | 749 static bool deja_vu = false; |
| 750 | |
| 2077 | 751 while (! octave_atexit_functions.empty ()) |
| 752 { | |
| 6680 | 753 std::string fcn = octave_atexit_functions.front (); |
| 4214 | 754 |
| 6680 | 755 octave_atexit_functions.pop_front (); |
| 2077 | 756 |
| 5237 | 757 reset_error_handler (); |
| 758 | |
| 4233 | 759 feval (fcn, octave_value_list (), 0); |
| 3215 | 760 |
| 761 flush_octave_stdout (); | |
| 2077 | 762 } |
| 3216 | 763 |
| 764 if (! deja_vu) | |
| 765 { | |
| 766 deja_vu = true; | |
| 767 | |
| 6068 | 768 // Do this explicitly so that destructors for mex file objects |
| 769 // are called, so that functions registered with mexAtExit are | |
| 770 // called. | |
| 6072 | 771 clear_mex_functions (); |
| 6068 | 772 |
| 3216 | 773 command_editor::restore_terminal_state (); |
| 774 | |
| 5775 | 775 // FIXME -- is this needed? Can it cause any trouble? |
| 3216 | 776 raw_mode (0); |
| 777 | |
| 5305 | 778 octave_history_write_timestamp (); |
| 779 | |
| 3216 | 780 command_history::clean_up_and_save (); |
| 781 | |
| 782 close_files (); | |
| 783 | |
| 784 cleanup_tmp_files (); | |
| 785 | |
| 786 flush_octave_stdout (); | |
| 787 | |
| 5305 | 788 if (! quitting_gracefully && (interactive || forced_interactive)) |
| 5629 | 789 { |
| 790 octave_stdout << "\n"; | |
| 791 | |
| 792 // Yes, we want this to be separate from the call to | |
| 793 // flush_octave_stdout above. | |
| 794 | |
| 795 flush_octave_stdout (); | |
| 796 } | |
| 3216 | 797 } |
| 2077 | 798 } |
| 799 | |
| 7409 | 800 void |
| 801 octave_add_atexit_function (const std::string& fname) | |
| 802 { | |
| 803 octave_atexit_functions.push_front (fname); | |
| 804 } | |
| 805 | |
| 806 bool | |
| 807 octave_remove_atexit_function (const std::string& fname) | |
| 808 { | |
| 809 bool found = false; | |
| 810 | |
| 811 for (std::list<std::string>::iterator p = octave_atexit_functions.begin (); | |
| 812 p != octave_atexit_functions.end (); p++) | |
| 813 { | |
| 814 if (*p == fname) | |
| 815 { | |
| 816 octave_atexit_functions.erase (p); | |
| 817 found = true; | |
| 818 break; | |
| 819 } | |
| 820 } | |
| 821 | |
| 822 return found; | |
| 823 } | |
| 824 | |
| 825 | |
| 6680 | 826 DEFUN (atexit, args, nargout, |
| 3332 | 827 "-*- texinfo -*-\n\ |
| 828 @deftypefn {Built-in Function} {} atexit (@var{fcn})\n\ | |
| 829 Register a function to be called when Octave exits. For example,\n\ | |
| 2077 | 830 \n\ |
| 3332 | 831 @example\n\ |
| 832 @group\n\ | |
| 6620 | 833 function bye_bye ()\n\ |
| 834 disp (\"Bye bye\");\n\ | |
| 3332 | 835 endfunction\n\ |
| 6620 | 836 atexit (\"bye_bye\");\n\ |
| 3332 | 837 @end group\n\ |
| 838 @end example\n\ | |
| 839 \n\ | |
| 840 @noindent\n\ | |
| 6620 | 841 will print the message \"Bye bye\" when Octave exits.\n\ |
| 6680 | 842 \n\ |
| 843 @deftypefnx {Built-in Function} {} atexit (@var{fcn}, @var{flag})\n\ | |
| 844 Register or unregister a function to be called when Octave exits,\n\ | |
| 845 depending on @var{flag}. If @var{flag} is true, the function is\n\ | |
| 846 registered, if @var{flag} is false, it is unregistered. For example,\n\ | |
| 847 after registering the function @code{bye_bye} as above,\n\ | |
| 848 \n\ | |
| 849 @example\n\ | |
| 850 atexit (\"bye_bye\", false);\n\ | |
| 851 @end example\n\ | |
| 852 \n\ | |
| 853 @noindent\n\ | |
| 854 will remove the function from the list and Octave will not call\n\ | |
| 855 the function @code{bye_by} when it exits.\n\ | |
| 856 \n\ | |
| 7001 | 857 Note that @code{atexit} only removes the first occurrence of a function\n\ |
| 6680 | 858 from the list, so if a function was placed in the list multiple\n\ |
| 859 times with @code{atexit}, it must also be removed from the list\n\ | |
| 860 multiple times.\n\ | |
| 3333 | 861 @end deftypefn") |
| 2077 | 862 { |
| 2086 | 863 octave_value_list retval; |
| 2077 | 864 |
| 865 int nargin = args.length (); | |
| 866 | |
| 6680 | 867 if (nargin == 1 || nargin == 2) |
| 2077 | 868 { |
| 3523 | 869 std::string arg = args(0).string_value (); |
| 2077 | 870 |
| 871 if (! error_state) | |
| 6680 | 872 { |
| 873 bool add_mode = true; | |
| 874 | |
| 875 if (nargin == 2) | |
| 876 { | |
| 877 add_mode = args(1).bool_value (); | |
| 878 | |
| 879 if (error_state) | |
| 880 error ("atexit: second argument must be a logical value"); | |
| 881 } | |
| 882 | |
| 883 if (! error_state) | |
| 884 { | |
| 885 if (add_mode) | |
| 7409 | 886 octave_add_atexit_function (arg); |
| 6680 | 887 else |
| 888 { | |
| 7409 | 889 bool found = octave_remove_atexit_function (arg); |
| 6680 | 890 |
| 891 if (nargout > 0) | |
| 892 retval(0) = found; | |
| 893 } | |
| 894 } | |
| 895 } | |
| 2077 | 896 else |
| 6680 | 897 error ("atexit: argument must be a string"); |
| 2077 | 898 } |
| 899 else | |
| 5823 | 900 print_usage (); |
| 2077 | 901 |
| 902 return retval; | |
| 903 } | |
| 904 | |
| 2689 | 905 DEFUN (octave_config_info, args, , |
| 3301 | 906 "-*- texinfo -*-\n\ |
| 907 @deftypefn {Built-in Function} {} octave_config_info (@var{option})\n\ | |
| 908 Return a structure containing configuration and installation\n\ | |
| 909 information for Octave.\n\ | |
| 2689 | 910 \n\ |
| 3301 | 911 if @var{option} is a string, return the configuration information for the\n\ |
| 2689 | 912 specified option.\n\ |
| 913 \n\ | |
| 3301 | 914 @end deftypefn") |
| 2162 | 915 { |
| 2689 | 916 octave_value retval; |
| 917 | |
| 4128 | 918 #if defined (ENABLE_DYNAMIC_LINKING) |
| 2689 | 919 bool octave_supports_dynamic_linking = true; |
| 920 #else | |
| 921 bool octave_supports_dynamic_linking = false; | |
| 922 #endif | |
| 923 | |
| 4357 | 924 static bool initialized = false; |
| 925 static Octave_map m; | |
| 2162 | 926 |
| 6274 | 927 struct conf_info_struct |
| 928 { | |
| 929 bool subst_home; | |
| 930 const char *key; | |
| 931 const char *val; | |
| 932 }; | |
| 933 | |
| 934 static const conf_info_struct conf_info[] = | |
| 4357 | 935 { |
| 6274 | 936 { false, "ALL_CFLAGS", OCTAVE_CONF_ALL_CFLAGS }, |
| 937 { false, "ALL_CXXFLAGS", OCTAVE_CONF_ALL_CXXFLAGS }, | |
| 938 { false, "ALL_FFLAGS", OCTAVE_CONF_ALL_FFLAGS }, | |
| 939 { false, "ALL_LDFLAGS", OCTAVE_CONF_ALL_LDFLAGS }, | |
| 940 { false, "AR", OCTAVE_CONF_AR }, | |
| 941 { false, "ARFLAGS", OCTAVE_CONF_ARFLAGS }, | |
| 942 { false, "BLAS_LIBS", OCTAVE_CONF_BLAS_LIBS }, | |
| 943 { false, "CC", OCTAVE_CONF_CC }, | |
| 944 { false, "CC_VERSION", OCTAVE_CONF_CC_VERSION }, | |
| 945 { false, "CFLAGS", OCTAVE_CONF_CFLAGS }, | |
| 946 { false, "CPICFLAG", OCTAVE_CONF_CPICFLAG }, | |
| 947 { false, "CPPFLAGS", OCTAVE_CONF_CPPFLAGS }, | |
| 948 { false, "CURL_LIBS", OCTAVE_CONF_CURL_LIBS }, | |
| 949 { false, "CXX", OCTAVE_CONF_CXX }, | |
| 950 { false, "CXXCPP", OCTAVE_CONF_CXXCPP }, | |
| 951 { false, "CXXFLAGS", OCTAVE_CONF_CXXFLAGS }, | |
| 952 { false, "CXXPICFLAG", OCTAVE_CONF_CXXPICFLAG }, | |
| 953 { false, "CXX_VERSION", OCTAVE_CONF_CXX_VERSION }, | |
| 954 { false, "DEFAULT_PAGER", OCTAVE_DEFAULT_PAGER }, | |
| 955 { false, "DEFS", OCTAVE_CONF_DEFS }, | |
| 956 { false, "DL_LD", OCTAVE_CONF_DL_LD }, | |
| 957 { false, "DL_LDFLAGS", OCTAVE_CONF_DL_LDFLAGS }, | |
| 958 { false, "ENABLE_DYNAMIC_LINKING", OCTAVE_CONF_ENABLE_DYNAMIC_LINKING }, | |
| 959 { false, "EXEEXT", OCTAVE_CONF_EXEEXT }, | |
| 960 { false, "F2C", OCTAVE_CONF_F2C }, | |
| 961 { false, "F2CFLAGS", OCTAVE_CONF_F2CFLAGS }, | |
| 962 { false, "F77", OCTAVE_CONF_F77 }, | |
| 963 { false, "F77_FLOAT_STORE_FLAG", OCTAVE_CONF_F77_FLOAT_STORE_FLAG }, | |
| 964 { false, "FC", OCTAVE_CONF_FC }, | |
| 965 { false, "FFLAGS", OCTAVE_CONF_FFLAGS }, | |
| 966 { false, "FFTW_LIBS", OCTAVE_CONF_FFTW_LIBS }, | |
| 967 { false, "FLIBS", OCTAVE_CONF_FLIBS }, | |
| 968 { false, "FPICFLAG", OCTAVE_CONF_FPICFLAG }, | |
| 969 { false, "GLPK_LIBS", OCTAVE_CONF_GLPK_LIBS }, | |
| 7361 | 970 { false, "GNUPLOT", OCTAVE_CONF_GNUPLOT }, |
| 6274 | 971 { false, "INCFLAGS", OCTAVE_CONF_INCFLAGS }, |
| 972 { false, "LDFLAGS", OCTAVE_CONF_LDFLAGS }, | |
| 973 { false, "LD_CXX", OCTAVE_CONF_LD_CXX }, | |
| 974 { false, "LD_STATIC_FLAG", OCTAVE_CONF_LD_STATIC_FLAG }, | |
| 975 { false, "LEX", OCTAVE_CONF_LEX }, | |
| 976 { false, "LEXLIB", OCTAVE_CONF_LEXLIB }, | |
| 977 { false, "LFLAGS", OCTAVE_CONF_LFLAGS }, | |
| 978 { false, "LIBCRUFT", OCTAVE_CONF_LIBCRUFT }, | |
| 979 { false, "LIBEXT", OCTAVE_CONF_LIBEXT }, | |
| 980 { false, "LIBFLAGS", OCTAVE_CONF_LIBFLAGS }, | |
| 981 { false, "LIBOCTAVE", OCTAVE_CONF_LIBOCTAVE }, | |
| 982 { false, "LIBOCTINTERP", OCTAVE_CONF_LIBOCTINTERP }, | |
| 983 { false, "LIBREADLINE", OCTAVE_CONF_LIBREADLINE }, | |
| 984 { false, "LIBS", OCTAVE_CONF_LIBS }, | |
| 985 { false, "LN_S", OCTAVE_CONF_LN_S }, | |
| 986 { false, "MKOCTFILE_DL_LDFLAGS", OCTAVE_CONF_MKOCTFILE_DL_LDFLAGS }, | |
| 987 { false, "RANLIB", OCTAVE_CONF_RANLIB }, | |
| 988 { false, "RDYNAMIC_FLAG", OCTAVE_CONF_RDYNAMIC_FLAG }, | |
| 989 { false, "RLD_FLAG", OCTAVE_CONF_RLD_FLAG }, | |
| 990 { false, "SED", OCTAVE_CONF_SED }, | |
| 991 { false, "SHARED_LIBS", OCTAVE_CONF_SHARED_LIBS }, | |
| 992 { false, "SHLEXT", OCTAVE_CONF_SHLEXT }, | |
| 993 { false, "SHLEXT_VER", OCTAVE_CONF_SHLEXT_VER }, | |
| 994 { false, "SH_LD", OCTAVE_CONF_SH_LD }, | |
| 995 { false, "SH_LDFLAGS", OCTAVE_CONF_SH_LDFLAGS }, | |
| 996 { false, "SONAME_FLAGS", OCTAVE_CONF_SONAME_FLAGS }, | |
| 997 { false, "STATIC_LIBS", OCTAVE_CONF_STATIC_LIBS }, | |
| 998 { false, "UGLY_DEFS", OCTAVE_CONF_UGLY_DEFS }, | |
| 999 { false, "USE_64_BIT_IDX_T", OCTAVE_CONF_USE_64_BIT_IDX_T }, | |
| 1000 { false, "XTRA_CFLAGS", OCTAVE_CONF_XTRA_CFLAGS }, | |
| 1001 { false, "XTRA_CXXFLAGS", OCTAVE_CONF_XTRA_CXXFLAGS }, | |
| 1002 { false, "YACC", OCTAVE_CONF_YACC }, | |
| 1003 { false, "YFLAGS", OCTAVE_CONF_YFLAGS }, | |
| 1004 { false, "api_version", OCTAVE_API_VERSION }, | |
| 1005 { true, "archlibdir", OCTAVE_ARCHLIBDIR }, | |
| 1006 { true, "bindir", OCTAVE_BINDIR }, | |
| 1007 { false, "canonical_host_type", OCTAVE_CANONICAL_HOST_TYPE }, | |
| 1008 { false, "config_opts", OCTAVE_CONF_config_opts }, | |
| 1009 { true, "datadir", OCTAVE_DATADIR }, | |
| 1010 { true, "datarootdir", OCTAVE_DATAROOTDIR }, | |
| 6276 | 1011 { true, "exec_prefix", OCTAVE_EXEC_PREFIX }, |
| 6274 | 1012 { true, "fcnfiledir", OCTAVE_FCNFILEDIR }, |
| 1013 { true, "imagedir", OCTAVE_IMAGEDIR }, | |
| 1014 { true, "includedir", OCTAVE_INCLUDEDIR }, | |
| 1015 { true, "infodir", OCTAVE_INFODIR }, | |
| 6276 | 1016 { true, "infofile", OCTAVE_INFOFILE }, |
| 6274 | 1017 { true, "libdir", OCTAVE_LIBDIR }, |
| 1018 { true, "libexecdir", OCTAVE_LIBEXECDIR }, | |
| 6311 | 1019 { true, "localapiarchlibdir", OCTAVE_LOCALAPIARCHLIBDIR }, |
| 6274 | 1020 { true, "localapifcnfiledir", OCTAVE_LOCALAPIFCNFILEDIR }, |
| 1021 { true, "localapioctfiledir", OCTAVE_LOCALAPIOCTFILEDIR }, | |
| 1022 { true, "localarchlibdir", OCTAVE_LOCALARCHLIBDIR }, | |
| 1023 { true, "localfcnfiledir", OCTAVE_LOCALFCNFILEDIR }, | |
| 1024 { true, "localoctfiledir", OCTAVE_LOCALOCTFILEDIR }, | |
| 1025 { true, "localstartupfiledir", OCTAVE_LOCALSTARTUPFILEDIR }, | |
| 1026 { true, "localverarchlibdir", OCTAVE_LOCALVERARCHLIBDIR }, | |
| 1027 { true, "localverfcnfiledir", OCTAVE_LOCALVERFCNFILEDIR }, | |
| 1028 { true, "localveroctfiledir", OCTAVE_LOCALVEROCTFILEDIR }, | |
| 1029 { true, "man1dir", OCTAVE_MAN1DIR }, | |
| 1030 { false, "man1ext", OCTAVE_MAN1EXT }, | |
| 1031 { true, "mandir", OCTAVE_MANDIR }, | |
| 1032 { true, "octfiledir", OCTAVE_OCTFILEDIR }, | |
| 1033 { true, "octincludedir", OCTAVE_OCTINCLUDEDIR }, | |
| 1034 { true, "octlibdir", OCTAVE_OCTLIBDIR }, | |
| 6276 | 1035 { true, "prefix", OCTAVE_PREFIX }, |
| 6274 | 1036 { true, "startupfiledir", OCTAVE_STARTUPFILEDIR }, |
| 1037 { false, "version", OCTAVE_VERSION }, | |
| 1038 { false, 0, 0 } | |
| 4357 | 1039 }; |
| 1040 | |
| 1041 if (! initialized) | |
| 1042 { | |
| 4675 | 1043 m.assign ("dld", octave_value (octave_supports_dynamic_linking)); |
| 4357 | 1044 |
| 4697 | 1045 oct_mach_info::float_format ff = oct_mach_info::native_float_format (); |
| 1046 m.assign ("float_format", | |
| 1047 octave_value (oct_mach_info::float_format_as_string (ff))); | |
| 1048 | |
| 1049 m.assign ("words_big_endian", | |
| 1050 octave_value (oct_mach_info::words_big_endian ())); | |
| 1051 | |
| 1052 m.assign ("words_little_endian", | |
| 1053 octave_value (oct_mach_info::words_little_endian ())); | |
| 1054 | |
| 4357 | 1055 int i = 0; |
| 4440 | 1056 |
| 1057 while (true) | |
| 4357 | 1058 { |
| 6274 | 1059 const conf_info_struct& elt = conf_info[i++]; |
| 1060 | |
| 1061 const char *key = elt.key; | |
| 4357 | 1062 |
| 1063 if (key) | |
| 6274 | 1064 { |
| 1065 if (elt.subst_home) | |
| 1066 m.assign (key, octave_value (subst_octave_home (elt.val))); | |
| 1067 else | |
| 1068 m.assign (key, octave_value (elt.val)); | |
| 1069 } | |
| 4357 | 1070 else |
| 1071 break; | |
| 1072 } | |
| 1073 | |
| 4691 | 1074 bool unix_system = true; |
| 7013 | 1075 bool mac_system = false; |
| 4691 | 1076 bool windows_system = false; |
| 1077 | |
| 1078 #if defined (WIN32) | |
| 1079 windows_system = true; | |
| 1080 #if !defined (__CYGWIN__) | |
| 1081 unix_system = false; | |
| 1082 #endif | |
| 1083 #endif | |
| 1084 | |
| 7010 | 1085 #if defined (__APPLE__) && defined (__MACH__) |
| 1086 mac_system = true; | |
| 1087 #endif | |
| 1088 | |
| 4691 | 1089 m.assign ("unix", octave_value (unix_system)); |
| 7010 | 1090 m.assign ("mac", octave_value (mac_system)); |
| 4691 | 1091 m.assign ("windows", octave_value (windows_system)); |
| 1092 | |
| 4357 | 1093 initialized = true; |
| 1094 } | |
| 2162 | 1095 |
| 2689 | 1096 int nargin = args.length (); |
| 1097 | |
| 1098 if (nargin == 1) | |
| 1099 { | |
| 3523 | 1100 std::string arg = args(0).string_value (); |
| 2689 | 1101 |
| 1102 if (! error_state) | |
| 4675 | 1103 { |
| 1104 Cell c = m.contents (arg.c_str ()); | |
| 5199 | 1105 |
| 1106 if (c.is_empty ()) | |
| 1107 error ("octave_config_info: no info for `%s'", arg.c_str ()); | |
| 1108 else | |
| 1109 retval = c(0); | |
| 4675 | 1110 } |
| 2689 | 1111 } |
| 1112 else if (nargin == 0) | |
| 4233 | 1113 retval = m; |
| 2689 | 1114 else |
| 5823 | 1115 print_usage (); |
| 2689 | 1116 |
| 1117 return retval; | |
| 2162 | 1118 } |
| 1119 | |
| 1683 | 1120 #if defined (__GNUG__) && defined (DEBUG_NEW_DELETE) |
| 2806 | 1121 |
| 1683 | 1122 int debug_new_delete = 0; |
| 1123 | |
| 1124 typedef void (*vfp)(void); | |
| 1125 extern vfp __new_handler; | |
| 1126 | |
| 1127 void * | |
| 1128 __builtin_new (size_t sz) | |
| 1129 { | |
| 1130 void *p; | |
| 1131 | |
| 1132 /* malloc (0) is unpredictable; avoid it. */ | |
| 1133 if (sz == 0) | |
| 1134 sz = 1; | |
| 2800 | 1135 p = malloc (sz); |
| 1683 | 1136 while (p == 0) |
| 1137 { | |
| 1138 (*__new_handler) (); | |
| 2800 | 1139 p = malloc (sz); |
| 1683 | 1140 } |
| 1141 | |
| 1142 if (debug_new_delete) | |
| 5629 | 1143 std::cerr << "__builtin_new: " << p << std::endl; |
| 1683 | 1144 |
| 1145 return p; | |
| 1146 } | |
| 1147 | |
| 1148 void | |
| 1149 __builtin_delete (void *ptr) | |
| 1150 { | |
| 1151 if (debug_new_delete) | |
| 5629 | 1152 std::cerr << "__builtin_delete: " << ptr << std::endl; |
| 1683 | 1153 |
| 1154 if (ptr) | |
| 1155 free (ptr); | |
| 1156 } | |
| 2806 | 1157 |
| 1683 | 1158 #endif |
| 1159 | |
| 1160 /* | |
| 1161 ;;; Local Variables: *** | |
| 1162 ;;; mode: C++ *** | |
| 1163 ;;; End: *** | |
| 1164 */ |