Mercurial > octave
annotate libinterp/corefcn/sysdep.cc @ 22096:b8f92ea626e7
include builtins.h only where needed
* graphics.cc, sysdep.cc, __init_gnuplot__.cc, ov-usr-fcn.cc: Don't
include builtins.h.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Tue, 12 Jul 2016 09:40:09 -0400 |
parents | 9203833cab7d |
children | 5ad67277b007 |
rev | line source |
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1 | 1 /* |
2 | |
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3 Copyright (C) 1993-2015 John W. Eaton |
1 | 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. | |
1 | 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/>. | |
1 | 20 |
21 */ | |
22 | |
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23 #if defined (HAVE_CONFIG_H) |
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24 # include "config.h" |
1 | 25 #endif |
26 | |
1346 | 27 #include <cfloat> |
1343 | 28 #include <cstddef> |
1346 | 29 #include <cstdio> |
1343 | 30 #include <cstdlib> |
31 #include <cstring> | |
32 | |
3503 | 33 #include <iostream> |
1728 | 34 #include <string> |
35 | |
1430 | 36 #if defined (HAVE_TERMIOS_H) |
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37 # include <termios.h> |
1430 | 38 #elif defined (HAVE_TERMIO_H) |
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39 # include <termio.h> |
1430 | 40 #elif defined (HAVE_SGTTY_H) |
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41 # include <sgtty.h> |
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42 #endif |
4067 | 43 |
44 #if defined (HAVE_CONIO_H) | |
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45 # include <conio.h> |
1430 | 46 #endif |
47 | |
3248 | 48 #if defined (HAVE_SYS_IOCTL_H) |
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49 # include <sys/ioctl.h> |
3248 | 50 #endif |
51 | |
1463 | 52 #if defined (HAVE_FLOATINGPOINT_H) |
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53 # include <floatingpoint.h> |
1463 | 54 #endif |
55 | |
2508 | 56 #if defined (HAVE_IEEEFP_H) |
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57 # include <ieeefp.h> |
2508 | 58 #endif |
59 | |
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60 #if defined (HAVE_OMP_H) |
21556 | 61 # include <omp.h> |
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62 #endif |
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63 |
2926 | 64 #include "cmd-edit.h" |
65 #include "file-ops.h" | |
2893 | 66 #include "lo-mappers.h" |
7231 | 67 #include "lo-math.h" |
2317 | 68 #include "mach-info.h" |
2926 | 69 #include "oct-env.h" |
5451 | 70 #include "quit.h" |
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71 #include "unistd-wrappers.h" |
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72 #include "unsetenv-wrapper.h" |
1769 | 73 |
6208 | 74 #include "Cell.h" |
1352 | 75 #include "defun.h" |
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76 #include "display.h" |
1352 | 77 #include "error.h" |
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78 #include "errwarn.h" |
529 | 79 #include "input.h" |
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80 #include "octave.h" |
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81 #include "ov.h" |
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82 #include "ovl.h" |
3234 | 83 #include "pager.h" |
6419 | 84 #include "parse.h" |
5770 | 85 #include "sighandlers.h" |
1352 | 86 #include "sysdep.h" |
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87 #include "interpreter.h" |
529 | 88 #include "utils.h" |
6598 | 89 #include "file-stat.h" |
529 | 90 |
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91 #if ! defined (STDIN_FILENO) |
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92 # define STDIN_FILENO 1 |
529 | 93 #endif |
444 | 94 |
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95 #if defined (__386BSD__) || defined (__FreeBSD__) || defined (__NetBSD__) |
2508 | 96 static void |
97 BSD_init (void) | |
98 { | |
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99 # if defined (HAVE_FLOATINGPOINT_H) |
2508 | 100 // Disable trapping on common exceptions. |
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101 # if ! defined (FP_X_DNML) |
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102 # define FP_X_DNML 0 |
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103 # endif |
2508 | 104 fpsetmask (~(FP_X_OFL|FP_X_INV|FP_X_DZ|FP_X_DNML|FP_X_UFL|FP_X_IMP)); |
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105 # endif |
2508 | 106 } |
107 #endif | |
108 | |
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109 #if defined (__MINGW32__) || defined (_MSC_VER) |
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110 |
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111 #define WIN32_LEAN_AND_MEAN |
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112 #include <windows.h> |
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113 #include <tlhelp32.h> |
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114 #include <shellapi.h> |
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115 |
6080 | 116 static void |
117 w32_set_octave_home (void) | |
118 { | |
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119 std::string bin_dir; |
6080 | 120 |
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121 HANDLE h = CreateToolhelp32Snapshot (TH32CS_SNAPMODULE |
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122 #if defined (TH32CS_SNAPMODULE32) |
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123 | TH32CS_SNAPMODULE32 |
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124 #endif |
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125 , 0); |
6080 | 126 |
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127 if (h != INVALID_HANDLE_VALUE) |
6080 | 128 { |
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129 MODULEENTRY32 mod_info; |
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130 |
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131 ZeroMemory (&mod_info, sizeof (mod_info)); |
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132 mod_info.dwSize = sizeof (mod_info); |
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133 |
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134 if (Module32First (h, &mod_info)) |
14445 | 135 { |
136 do | |
137 { | |
138 std::string mod_name (mod_info.szModule); | |
6080 | 139 |
14445 | 140 if (mod_name.find ("octinterp") != std::string::npos) |
141 { | |
142 bin_dir = mod_info.szExePath; | |
143 if (bin_dir[bin_dir.length () - 1] != '\\') | |
144 bin_dir.append (1, '\\'); | |
145 break; | |
146 } | |
147 } | |
148 while (Module32Next (h, &mod_info)); | |
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149 } |
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150 |
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151 CloseHandle (h); |
6080 | 152 } |
153 | |
154 if (! bin_dir.empty ()) | |
155 { | |
156 size_t pos = bin_dir.rfind ("\\bin\\"); | |
157 | |
8021 | 158 if (pos != std::string::npos) |
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159 octave::sys::env::putenv ("OCTAVE_HOME", bin_dir.substr (0, pos)); |
6080 | 160 } |
161 } | |
162 | |
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163 static void |
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164 w32_init (void) |
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165 { |
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166 w32_set_octave_home (); |
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167 |
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168 octave::command_editor::prefer_env_winsize (true); |
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169 } |
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170 |
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171 static bool |
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172 w32_shell_execute (const std::string& file) |
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173 { |
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174 } |
5451 | 175 #endif |
176 | |
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177 DEFUN (__open_with_system_app__, args, , |
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178 doc: /* -*- texinfo -*- |
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179 @deftypefn {} {} __open_with_system_app__ (@var{file}) |
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180 Undocumented internal function. |
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181 @end deftypefn */) |
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182 { |
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183 if (args.length () != 1) |
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184 print_usage (); |
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185 |
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186 std::string file = args(0).xstring_value ("__open_with_system_app__: argument must be a filename"); |
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187 |
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188 octave_value retval; |
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189 |
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190 #if defined (OCTAVE_USE_WINDOWS_API) |
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191 HINSTANCE status = ShellExecute (0, 0, file.c_str (), 0, 0, |
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192 SW_SHOWNORMAL); |
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193 |
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194 // ShellExecute returns a value greater than 32 if successful. |
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195 retval = (reinterpret_cast<ptrdiff_t> (status) > 32); |
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196 #elif defined (__APPLE__) |
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197 octave_value_list tmp |
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198 = Fsystem (ovl ("open " + file + " 2> /dev/null", |
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199 false, "async"), |
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200 1); |
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201 |
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202 retval = (tmp(0).double_value () == 0); |
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203 #else |
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204 octave_value_list tmp |
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205 = Fsystem (ovl ("xdg-open " + file + " 2> /dev/null", |
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206 false, "async"), |
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207 1); |
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208 |
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209 retval = (tmp(0).double_value () == 0); |
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210 #endif |
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211 |
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212 return retval; |
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213 } |
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214 |
5451 | 215 #if defined (__MINGW32__) |
216 static void | |
217 MINGW_init (void) | |
218 { | |
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219 w32_init (); |
5451 | 220 } |
221 #endif | |
222 | |
6080 | 223 #if defined (_MSC_VER) |
224 static void | |
225 MSVC_init (void) | |
226 { | |
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227 w32_init (); |
6080 | 228 } |
229 #endif | |
230 | |
6598 | 231 // Return TRUE if FILE1 and FILE2 refer to the same (physical) file. |
232 | |
233 bool | |
234 same_file_internal (const std::string& file1, const std::string& file2) | |
235 { | |
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236 #if defined (OCTAVE_USE_WINDOWS_API) |
6598 | 237 |
6691 | 238 bool retval = false; |
239 | |
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240 const char *f1 = file1.c_str (); |
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241 const char *f2 = file2.c_str (); |
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242 |
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243 bool f1_is_dir = GetFileAttributes (f1) & FILE_ATTRIBUTE_DIRECTORY; |
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244 bool f2_is_dir = GetFileAttributes (f2) & FILE_ATTRIBUTE_DIRECTORY; |
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245 |
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246 // Windows native code |
6598 | 247 // Reference: http://msdn2.microsoft.com/en-us/library/aa363788.aspx |
248 | |
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249 DWORD share = FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE; |
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250 |
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251 HANDLE hfile1 |
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252 = CreateFile (f1, 0, share, 0, OPEN_EXISTING, |
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253 f1_is_dir ? FILE_FLAG_BACKUP_SEMANTICS : 0, 0); |
6691 | 254 |
255 if (hfile1 != INVALID_HANDLE_VALUE) | |
256 { | |
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257 HANDLE hfile2 |
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258 = CreateFile (f2, 0, share, 0, OPEN_EXISTING, |
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259 f2_is_dir ? FILE_FLAG_BACKUP_SEMANTICS : 0, 0); |
6598 | 260 |
6691 | 261 if (hfile2 != INVALID_HANDLE_VALUE) |
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262 { |
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263 BY_HANDLE_FILE_INFORMATION hfi1; |
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264 BY_HANDLE_FILE_INFORMATION hfi2; |
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265 |
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266 if (GetFileInformationByHandle (hfile1, &hfi1) |
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267 && GetFileInformationByHandle (hfile2, &hfi2)) |
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268 { |
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269 retval = (hfi1.dwVolumeSerialNumber == hfi2.dwVolumeSerialNumber |
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270 && hfi1.nFileIndexHigh == hfi2.nFileIndexHigh |
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271 && hfi1.nFileIndexLow == hfi2.nFileIndexLow); |
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272 } |
6598 | 273 |
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274 CloseHandle (hfile2); |
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275 } |
6691 | 276 |
6598 | 277 CloseHandle (hfile1); |
278 } | |
6691 | 279 |
280 return retval; | |
6598 | 281 |
282 #else | |
283 | |
284 // POSIX Code | |
285 | |
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286 octave::sys::file_stat fs_file1 (file1); |
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287 octave::sys::file_stat fs_file2 (file2); |
6598 | 288 |
289 return (fs_file1 && fs_file2 | |
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290 && fs_file1.ino () == fs_file2.ino () |
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291 && fs_file1.dev () == fs_file2.dev ()); |
6598 | 292 |
293 #endif | |
294 } | |
295 | |
1 | 296 void |
297 sysdep_init (void) | |
298 { | |
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299 // Use a function from libgomp to force loading of OpenMP library. |
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300 // Otherwise, a dynamically loaded library making use of OpenMP such |
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301 // as GraphicsMagick will segfault on exit (bug #41699). |
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302 #if defined (HAVE_OMP_GET_NUM_THREADS) |
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303 omp_get_num_threads (); |
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304 #endif |
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305 |
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306 #if defined (__386BSD__) || defined (__FreeBSD__) || defined (__NetBSD__) |
2508 | 307 BSD_init (); |
5451 | 308 #elif defined (__MINGW32__) |
309 MINGW_init (); | |
6080 | 310 #elif defined (_MSC_VER) |
311 MSVC_init (); | |
1 | 312 #endif |
313 } | |
314 | |
5451 | 315 void |
316 sysdep_cleanup (void) | |
317 { | |
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318 #if defined (OCTAVE_USE_WINDOWS_API) |
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319 // Let us fail immediately without displaying any dialog. |
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320 SetProcessShutdownParameters (0x280, SHUTDOWN_NORETRY); |
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321 #endif |
5451 | 322 } |
323 | |
767 | 324 // Set terminal in raw mode. From less-177. |
325 // | |
326 // Change terminal to "raw mode", or restore to "normal" mode. | |
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327 // "Raw mode" means |
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328 // 1. An outstanding read will complete on receipt of a single keystroke. |
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329 // 2. Input is not echoed. |
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330 // 3. On output, \n is mapped to \r\n. |
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331 // 4. \t is NOT expanded into spaces. |
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332 // 5. Signal-causing characters such as ctrl-C (interrupt), |
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333 // etc. are NOT disabled. |
767 | 334 // It doesn't matter whether an input \n is mapped to \r, or vice versa. |
335 | |
529 | 336 void |
3657 | 337 raw_mode (bool on, bool wait) |
529 | 338 { |
3657 | 339 static bool curr_on = false; |
529 | 340 |
341 int tty_fd = STDIN_FILENO; | |
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342 if (! octave_isatty_wrapper (tty_fd)) |
529 | 343 { |
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344 if (octave::application::interactive () |
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345 && ! octave::application::forced_interactive ()) |
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346 error ("stdin is not a tty!"); |
529 | 347 } |
348 | |
349 if (on == curr_on) | |
350 return; | |
351 | |
352 #if defined (HAVE_TERMIOS_H) | |
353 { | |
354 struct termios s; | |
355 static struct termios save_term; | |
356 | |
357 if (on) | |
358 { | |
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359 // Get terminal modes. |
529 | 360 |
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361 tcgetattr (tty_fd, &s); |
529 | 362 |
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363 // Save modes and set certain variables dependent on modes. |
529 | 364 |
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365 save_term = s; |
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366 // ospeed = s.c_cflag & CBAUD; |
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367 // erase_char = s.c_cc[VERASE]; |
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368 // kill_char = s.c_cc[VKILL]; |
529 | 369 |
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370 // Set the modes to the way we want them. |
529 | 371 |
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372 s.c_lflag &= ~(ICANON | ECHO | ECHOE | ECHOK | ECHONL); |
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373 s.c_oflag |= (OPOST | ONLCR); |
529 | 374 #if defined (OCRNL) |
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375 s.c_oflag &= ~(OCRNL); |
529 | 376 #endif |
377 #if defined (ONOCR) | |
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378 s.c_oflag &= ~(ONOCR); |
529 | 379 #endif |
380 #if defined (ONLRET) | |
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381 s.c_oflag &= ~(ONLRET); |
529 | 382 #endif |
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383 s.c_cc[VMIN] = wait ? 1 : 0; |
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384 s.c_cc[VTIME] = 0; |
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385 } |
529 | 386 else |
387 { | |
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388 // Restore saved modes. |
1358 | 389 |
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390 s = save_term; |
529 | 391 } |
3658 | 392 |
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393 tcsetattr (tty_fd, wait ? TCSAFLUSH : TCSADRAIN, &s); |
529 | 394 } |
395 #elif defined (HAVE_TERMIO_H) | |
396 { | |
397 struct termio s; | |
398 static struct termio save_term; | |
399 | |
400 if (on) | |
401 { | |
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402 // Get terminal modes. |
529 | 403 |
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404 ioctl (tty_fd, TCGETA, &s); |
529 | 405 |
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406 // Save modes and set certain variables dependent on modes. |
529 | 407 |
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408 save_term = s; |
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409 // ospeed = s.c_cflag & CBAUD; |
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410 // erase_char = s.c_cc[VERASE]; |
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411 // kill_char = s.c_cc[VKILL]; |
529 | 412 |
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413 // Set the modes to the way we want them. |
529 | 414 |
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415 s.c_lflag &= ~(ICANON | ECHO | ECHOE | ECHOK | ECHONL); |
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416 s.c_oflag |= (OPOST | ONLCR); |
529 | 417 #if defined (OCRNL) |
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418 s.c_oflag &= ~(OCRNL); |
529 | 419 #endif |
420 #if defined (ONOCR) | |
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421 s.c_oflag &= ~(ONOCR); |
529 | 422 #endif |
423 #if defined (ONLRET) | |
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424 s.c_oflag &= ~(ONLRET); |
529 | 425 #endif |
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426 s.c_cc[VMIN] = wait ? 1 : 0; |
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427 } |
529 | 428 else |
429 { | |
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430 // Restore saved modes. |
1358 | 431 |
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432 s = save_term; |
529 | 433 } |
3658 | 434 |
529 | 435 ioctl (tty_fd, TCSETAW, &s); |
436 } | |
437 #elif defined (HAVE_SGTTY_H) | |
438 { | |
439 struct sgttyb s; | |
440 static struct sgttyb save_term; | |
441 | |
442 if (on) | |
443 { | |
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444 // Get terminal modes. |
529 | 445 |
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446 ioctl (tty_fd, TIOCGETP, &s); |
529 | 447 |
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448 // Save modes and set certain variables dependent on modes. |
529 | 449 |
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450 save_term = s; |
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451 // ospeed = s.sg_ospeed; |
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452 // erase_char = s.sg_erase; |
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453 // kill_char = s.sg_kill; |
529 | 454 |
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455 // Set the modes to the way we want them. |
529 | 456 |
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457 s.sg_flags |= CBREAK; |
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458 s.sg_flags &= ~(ECHO); |
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459 } |
529 | 460 else |
461 { | |
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462 // Restore saved modes. |
1358 | 463 |
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464 s = save_term; |
529 | 465 } |
3658 | 466 |
529 | 467 ioctl (tty_fd, TIOCSETN, &s); |
468 } | |
469 #else | |
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470 warn_disabled_feature ("", "raw mode console I/O"); |
4064 | 471 |
472 // Make sure the current mode doesn't toggle. | |
473 on = curr_on; | |
529 | 474 #endif |
475 | |
476 curr_on = on; | |
477 } | |
478 | |
6726 | 479 FILE * |
480 octave_popen (const char *command, const char *mode) | |
481 { | |
482 #if defined (__MINGW32__) || defined (_MSC_VER) | |
483 if (mode && mode[0] && ! mode[1]) | |
484 { | |
485 char tmode[3]; | |
486 tmode[0] = mode[0]; | |
487 tmode[1] = 'b'; | |
488 tmode[2] = 0; | |
489 | |
490 return _popen (command, tmode); | |
491 } | |
492 else | |
493 return _popen (command, mode); | |
494 #else | |
495 return popen (command, mode); | |
496 #endif | |
497 } | |
498 | |
499 int | |
500 octave_pclose (FILE *f) | |
501 { | |
502 #if defined (__MINGW32__) || defined (_MSC_VER) | |
503 return _pclose (f); | |
504 #else | |
505 return pclose (f); | |
506 #endif | |
507 } | |
508 | |
767 | 509 // Read one character from the terminal. |
510 | |
529 | 511 int |
4067 | 512 octave_kbhit (bool wait) |
529 | 513 { |
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514 #if defined (HAVE__KBHIT) && defined (HAVE__GETCH) |
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515 // This essentially means we are on a Windows system. |
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516 int c; |
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517 |
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518 if (wait) |
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519 c = _getch (); |
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520 else |
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521 c = (! _kbhit ()) ? 0 : _getch (); |
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522 |
4067 | 523 #else |
3658 | 524 raw_mode (true, wait); |
525 | |
5770 | 526 // Get current handler. |
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527 octave::interrupt_handler saved_interrupt_handler |
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528 = octave::ignore_interrupts (); |
5770 | 529 |
530 // Restore it, disabling system call restarts (if possible) so the | |
531 // read can be interrupted. | |
532 | |
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533 octave::set_interrupt_handler (saved_interrupt_handler, false); |
5770 | 534 |
3658 | 535 int c = std::cin.get (); |
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536 |
3658 | 537 if (std::cin.fail () || std::cin.eof ()) |
538 std::cin.clear (); | |
539 | |
5770 | 540 // Restore it, enabling system call restarts (if possible). |
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541 octave::set_interrupt_handler (saved_interrupt_handler, true); |
5770 | 542 |
3658 | 543 raw_mode (false, true); |
4067 | 544 #endif |
3658 | 545 |
529 | 546 return c; |
547 } | |
548 | |
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549 std::string |
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550 get_P_tmpdir (void) |
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551 { |
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552 #if defined (OCTAVE_USE_WINDOWS_API) |
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553 |
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554 std::string retval; |
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555 |
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556 #if defined (P_tmpdir) |
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557 retval = P_tmpdir; |
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558 #endif |
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559 |
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560 // Apparently some versions of MinGW and MSVC either don't define |
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561 // P_tmpdir, or they define it to a single backslash, neither of which |
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562 // is particularly helpful. |
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563 |
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564 if (retval.empty () || retval == "\\") |
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565 { |
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566 retval = octave::sys::env::getenv ("TEMP"); |
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567 |
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568 if (retval.empty ()) |
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569 retval = octave::sys::env::getenv ("TMP"); |
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570 |
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571 if (retval.empty ()) |
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572 retval = "c:\\temp"; |
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573 } |
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574 |
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575 return retval; |
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576 |
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577 #elif defined (P_tmpdir) |
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578 |
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579 return P_tmpdir; |
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580 |
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581 #else |
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582 |
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583 return "/tmp"; |
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584 |
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585 #endif |
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586 } |
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587 |
1957 | 588 DEFUN (clc, , , |
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589 doc: /* -*- texinfo -*- |
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590 @deftypefn {} {} clc () |
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591 @deftypefnx {} {} home () |
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592 Clear the terminal screen and move the cursor to the upper left corner. |
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593 @end deftypefn */) |
529 | 594 { |
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595 bool skip_redisplay = true; |
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596 |
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597 octave::command_editor::clear_screen (skip_redisplay); |
529 | 598 |
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599 return ovl (); |
529 | 600 } |
601 | |
549 | 602 DEFALIAS (home, clc); |
603 | |
1957 | 604 DEFUN (getenv, args, , |
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605 doc: /* -*- texinfo -*- |
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606 @deftypefn {} {} getenv (@var{var}) |
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607 Return the value of the environment variable @var{var}. |
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608 |
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609 For example, |
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610 |
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611 @example |
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612 getenv ("PATH") |
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613 @end example |
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614 |
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615 @noindent |
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616 returns a string containing the value of your path. |
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617 @seealso{setenv, unsetenv} |
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618 @end deftypefn */) |
529 | 619 { |
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620 if (args.length () != 1) |
5823 | 621 print_usage (); |
529 | 622 |
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623 std::string name = args(0).string_value (); |
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624 |
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625 return ovl (octave::sys::env::getenv (name)); |
529 | 626 } |
627 | |
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628 /* |
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629 %!assert (ischar (getenv ("OCTAVE_HOME"))) |
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630 */ |
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631 |
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632 DEFUN (setenv, args, , |
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633 doc: /* -*- texinfo -*- |
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634 @deftypefn {} {} setenv (@var{var}, @var{value}) |
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635 @deftypefnx {} {} setenv (@var{var}) |
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636 @deftypefnx {} {} putenv (@dots{}) |
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637 Set the value of the environment variable @var{var} to @var{value}. |
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638 |
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639 If no @var{value} is specified then the variable will be assigned the null |
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640 string. |
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641 @seealso{unsetenv, getenv} |
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642 @end deftypefn */) |
1706 | 643 { |
644 int nargin = args.length (); | |
645 | |
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646 if (nargin < 1 || nargin > 2) |
5823 | 647 print_usage (); |
1706 | 648 |
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649 std::string var = args(0).xstring_value ("setenv: VAR must be a string"); |
1706 | 650 |
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651 std::string val = (nargin == 2 |
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652 ? args(1).xstring_value ("setenv: VALUE must be a string") |
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653 : ""); |
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654 |
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655 octave::sys::env::putenv (var, val); |
1706 | 656 |
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657 return ovl (); |
1706 | 658 } |
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659 |
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660 DEFALIAS (putenv, setenv); |
1706 | 661 |
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662 /* |
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663 %!test |
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664 %! setenv ("dummy_variable_that_cannot_matter", "foobar"); |
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665 %! assert (getenv ("dummy_variable_that_cannot_matter"), "foobar"); |
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666 %! unsetenv ("dummy_variable_that_cannot_matter"); |
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667 %! assert (getenv ("dummy_variable_that_cannot_matter"), ""); |
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668 */ |
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669 |
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670 DEFUN (unsetenv, args, , |
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671 doc: /* -*- texinfo -*- |
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672 @deftypefn {} {@var{status} =} unsetenv (@var{var}) |
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673 Delete the environment variable @var{var}. |
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674 |
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675 Return 0 if the variable was deleted, or did not exist, and -1 if an error |
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676 occurred. |
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677 @seealso{setenv, getenv} |
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678 @end deftypefn */) |
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679 { |
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680 if (args.length () != 1) |
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681 print_usage (); |
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682 |
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683 std::string tmp = args(0).string_value (); |
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684 |
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685 return ovl (octave_unsetenv_wrapper (tmp.c_str ())); |
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686 } |
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687 |
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688 /* |
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689 ## Test for unsetenv is in setenv test |
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690 */ |
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691 |
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692 // FIXME: perhaps kbhit should also be able to print a prompt? |
3372 | 693 |
3657 | 694 DEFUN (kbhit, args, , |
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695 doc: /* -*- texinfo -*- |
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696 @deftypefn {} {} kbhit () |
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697 @deftypefnx {} {} kbhit (1) |
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698 Read a single keystroke from the keyboard. |
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699 |
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700 If called with an argument, don't wait for a keypress. |
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701 |
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702 For example, |
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703 |
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704 @example |
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705 x = kbhit (); |
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706 @end example |
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707 |
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708 @noindent |
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709 will set @var{x} to the next character typed at the keyboard as soon as |
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710 it is typed. |
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711 |
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712 @example |
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713 x = kbhit (1); |
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714 @end example |
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715 |
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716 @noindent |
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717 is identical to the above example, but doesn't wait for a keypress, |
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718 returning the empty string if no key is available. |
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719 @seealso{input, pause} |
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720 @end deftypefn */) |
529 | 721 { |
4233 | 722 octave_value retval; |
529 | 723 |
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724 // FIXME: add timeout and default value args? |
529 | 725 |
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726 if (octave::application::interactive ()) |
529 | 727 { |
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728 Fdrawnow (); |
6423 | 729 |
4067 | 730 int c = octave_kbhit (args.length () == 0); |
3657 | 731 |
3658 | 732 if (c == -1) |
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733 c = 0; |
3657 | 734 |
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735 char s[2] = { static_cast<char> (c), '\0' }; |
16015 | 736 |
529 | 737 retval = s; |
738 } | |
739 | |
740 return retval; | |
741 } | |
742 | |
1957 | 743 DEFUN (pause, args, , |
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744 doc: /* -*- texinfo -*- |
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745 @deftypefn {} {} pause () |
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746 @deftypefnx {} {} pause (@var{n}) |
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747 Suspend the execution of the program for @var{n} seconds. |
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748 |
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749 If invoked without an input arguments then the program is suspended until a |
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750 character is typed. |
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751 |
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752 @var{n} is a positive real value and may be a fraction of a second, |
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753 for example: |
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754 |
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755 @example |
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756 @group |
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757 tic; pause (0.05); toc |
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758 @print{} Elapsed time is 0.05039 seconds. |
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759 @end group |
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760 @end example |
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761 |
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762 The following example prints a message and then waits 5 seconds before |
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763 clearing the screen. |
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764 |
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765 @example |
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766 @group |
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767 disp ("wait please..."); |
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768 pause (5); |
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769 clc; |
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770 @end group |
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771 @end example |
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772 |
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773 @seealso{kbhit} |
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774 @end deftypefn */) |
529 | 775 { |
776 int nargin = args.length (); | |
777 | |
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778 if (nargin > 1) |
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779 print_usage (); |
529 | 780 |
1579 | 781 if (nargin == 1) |
529 | 782 { |
1579 | 783 double dval = args(0).double_value (); |
636 | 784 |
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785 if (octave::math::isnan (dval)) |
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786 warning ("pause: NaN is an invalid delay"); |
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787 else |
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788 { |
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789 Fdrawnow (); |
6419 | 790 |
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791 if (octave::math::isinf (dval)) |
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792 { |
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793 flush_octave_stdout (); |
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794 octave_kbhit (); |
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795 } |
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796 else |
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797 octave_sleep (dval); |
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798 } |
529 | 799 } |
1579 | 800 else |
3234 | 801 { |
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802 Fdrawnow (); |
3234 | 803 flush_octave_stdout (); |
4067 | 804 octave_kbhit (); |
3234 | 805 } |
2630 | 806 |
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807 return ovl (); |
2630 | 808 } |
809 | |
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810 /* |
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811 %!test |
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812 %! pause (1); |
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813 |
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814 %!error (pause (1, 2)) |
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815 */ |
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816 |
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817 // FIXME: maybe this should only return 1 if IEEE floating |
862 | 818 // point functions really work. |
819 | |
1957 | 820 DEFUN (isieee, , , |
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821 doc: /* -*- texinfo -*- |
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822 @deftypefn {} {} isieee () |
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823 Return true if your computer @emph{claims} to conform to the IEEE standard |
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824 for floating point calculations. |
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825 |
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826 No actual tests are performed. |
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827 @end deftypefn */) |
862 | 828 { |
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829 octave::mach_info::float_format flt_fmt = octave::mach_info::native_float_format (); |
2317 | 830 |
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831 return ovl (flt_fmt == octave::mach_info::flt_fmt_ieee_little_endian |
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832 || flt_fmt == octave::mach_info::flt_fmt_ieee_big_endian); |
862 | 833 } |
834 | |
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835 /* |
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836 %!assert (islogical (isieee ())) |
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837 */ |
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838 |
4600 | 839 DEFUN (native_float_format, , , |
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840 doc: /* -*- texinfo -*- |
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841 @deftypefn {} {} native_float_format () |
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842 Return the native floating point format as a string. |
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843 @end deftypefn */) |
4600 | 844 { |
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845 octave::mach_info::float_format flt_fmt = octave::mach_info::native_float_format (); |
4600 | 846 |
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847 return ovl (octave::mach_info::float_format_as_string (flt_fmt)); |
4600 | 848 } |
849 | |
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850 /* |
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851 %!assert (ischar (native_float_format ())) |
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852 */ |
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853 |
1957 | 854 DEFUN (tilde_expand, args, , |
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855 doc: /* -*- texinfo -*- |
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856 @deftypefn {} {} tilde_expand (@var{string}) |
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857 @deftypefnx {} {} tilde_expand (@var{cellstr}) |
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858 Perform tilde expansion on @var{string}. |
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859 |
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860 If @var{string} begins with a tilde character, (@samp{~}), all of the |
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861 characters preceding the first slash (or all characters, if there is no |
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862 slash) are treated as a possible user name, and the tilde and the following |
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863 characters up to the slash are replaced by the home directory of the named |
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864 user. If the tilde is followed immediately by a slash, the tilde is |
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865 replaced by the home directory of the user running Octave. |
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866 |
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867 If the input is a cell array of strings @var{cellstr} then tilde expansion |
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868 is performed on each string element. |
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869 |
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870 Examples: |
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871 |
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872 @example |
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873 @group |
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874 tilde_expand ("~joeuser/bin") |
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875 @result{} "/home/joeuser/bin" |
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876 tilde_expand ("~/bin") |
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877 @result{} "/home/jwe/bin" |
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878 @end group |
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879 @end example |
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880 @end deftypefn */) |
1750 | 881 { |
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882 if (args.length () != 1) |
5823 | 883 print_usage (); |
1750 | 884 |
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885 octave_value arg = args(0); |
6116 | 886 |
20990
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887 string_vector sv = arg.xstring_vector_value ("tilde_expand: argument must be char or cellstr object"); |
6116 | 888 |
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889 sv = octave::sys::file_ops::tilde_expand (sv); |
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890 |
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891 if (arg.is_cellstr ()) |
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892 return ovl (Cell (arg.dims (), sv)); |
1750 | 893 else |
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894 return ovl (sv); |
1750 | 895 } |
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896 |
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897 /* |
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898 %!test |
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899 %! home = get_home_directory (); |
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900 %! assert (tilde_expand ("~/foobar"), [home "/foobar"]); |
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901 %! assert (tilde_expand ("/foo/bar"), "/foo/bar"); |
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902 %! assert (tilde_expand ("foo/bar"), "foo/bar"); |
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903 */ |
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904 |
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905 DEFUN (get_home_directory, , , |
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906 doc: /* -*- texinfo -*- |
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907 @deftypefn {} {@var{homedir} =} get_home_directory () |
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908 Return the current home directory. |
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909 |
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910 On most systems, this is equivalent to @code{getenv ("HOME")}. On Windows |
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911 systems, if the environment variable @env{HOME} is not set then it is |
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912 equivalent to |
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913 @code{fullfile (getenv ("HOMEDRIVE"), getenv ("HOMEPATH"))} |
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914 @seealso{getenv} |
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915 @end deftypefn */) |
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916 { |
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917 return ovl (octave::sys::env::get_home_directory ()); |
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918 } |
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919 |
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920 /* |
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921 %!test |
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922 %! if (! ispc ()) |
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923 %! assert (get_home_directory (), getenv ("HOME")); |
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924 %! endif |
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925 */ |
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926 |
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927 // This function really belongs in display.cc, but including defun.h in |
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928 // that file results in conflicts with symbols from headers that are |
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929 // needed for X11 and Carbon functions. |
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930 |
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931 DEFUN (have_window_system, , , |
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932 doc: /* -*- texinfo -*- |
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933 @deftypefn {} {} have_window_system () |
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934 Return true if a window system is available (X11, Windows, or Apple OS X) |
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935 and false otherwise. |
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936 @seealso{isguirunning} |
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937 @end deftypefn */) |
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938 { |
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939 return ovl (display_info::display_available ()); |
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940 } |