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1 /* |
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2 |
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3 Copyright (C) 1996 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 2, or (at your option) any |
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10 later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, write to the Free |
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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 */ |
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22 |
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23 // Originally written by John C. Campbell <jcc@bevo.che.wisc.edu> |
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24 // |
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25 // Thomas Baier <baier@ci.tuwien.ac.at> added the original versions of |
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26 // the following functions: |
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27 // |
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28 // popen |
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29 // pclose |
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30 // execute (now popen2.m) |
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31 // sync_system (now merged with system) |
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32 // async_system (now merged with system) |
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33 |
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34 // Completely rewritten by John W. Eaton <jwe@bevo.che.wisc.edu>, |
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35 // April 1996. |
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36 |
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240
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37 #ifdef HAVE_CONFIG_H |
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38 #include <config.h> |
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39 #endif |
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40 |
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41 #include <climits> |
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42 |
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43 #include <iostream.h> |
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44 |
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45 #ifdef HAVE_UNISTD_H |
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46 #include <sys/types.h> |
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47 #include <unistd.h> |
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48 #endif |
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49 |
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50 #include "defun.h" |
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51 #include "error.h" |
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1766
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52 #include "file-ops.h" |
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542
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53 #include "help.h" |
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2116
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54 #include "lo-ieee.h" |
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55 #include "oct-fstrm.h" |
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56 #include "oct-iostrm.h" |
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57 #include "oct-map.h" |
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58 #include "oct-obj.h" |
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59 #include "oct-prcstrm.h" |
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60 #include "oct-stream.h" |
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61 #include "oct-strstrm.h" |
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62 #include "pager.h" |
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444
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63 #include "sysdep.h" |
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64 #include "syswait.h" |
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65 #include "utils.h" |
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66 |
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67 void |
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164
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68 initialize_file_io (void) |
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1
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69 { |
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70 octave_istream *stdin_stream |
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71 = new octave_istream (&cin, "stdin"); |
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72 |
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73 // This uses octave_stdout (see pager.h), not cout so that Octave's |
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74 // standard output stream will pass through the pager. |
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75 |
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76 octave_ostream *stdout_stream |
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77 = new octave_ostream (&octave_stdout, "stdout"); |
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78 |
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79 octave_ostream *stderr_stream |
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80 = new octave_ostream (&cerr, "stderr"); |
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81 |
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82 octave_stream_list::insert (stdin_stream); |
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83 octave_stream_list::insert (stdout_stream); |
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84 octave_stream_list::insert (stderr_stream); |
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85 } |
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86 |
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87 void |
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88 close_files (void) |
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89 { |
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90 octave_stream_list::clear (); |
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91 } |
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92 |
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93 static void |
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94 gripe_invalid_file_id (const char *fcn) |
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95 { |
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96 ::error ("%s: invalid file id", fcn); |
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97 } |
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98 |
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99 static int |
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100 fopen_mode_to_ios_mode (const string& mode) |
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101 { |
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102 int retval = 0; |
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103 |
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104 if (! mode.empty ()) |
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368
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105 { |
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106 // Could probably be faster, but does it really matter? |
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107 |
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108 if (mode == "r") |
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109 retval = ios::in; |
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110 else if (mode == "w") |
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111 retval = ios::out | ios::trunc; |
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112 else if (mode == "a") |
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113 retval = ios::out | ios::app; |
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114 else if (mode == "r+") |
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115 retval = ios::in | ios::out; |
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116 else if (mode == "w+") |
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117 retval = ios::in | ios::out | ios::trunc; |
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118 else if (mode == "a+") |
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119 retval = ios::in | ios::out | ios::app; |
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120 else if (mode == "rb") |
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121 retval = ios::in | ios::bin; |
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122 else if (mode == "wb") |
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123 retval = ios::out | ios::trunc | ios::bin; |
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124 else if (mode == "ab") |
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125 retval = ios::out | ios::app | ios::bin; |
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126 else if (mode == "r+b") |
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127 retval = ios::in | ios::out | ios::bin; |
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128 else if (mode == "w+b") |
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129 retval = ios::in | ios::out | ios::trunc | ios::bin; |
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130 else if (mode == "a+b") |
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131 retval = ios::in | ios::out | ios::app | ios::bin; |
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368
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132 else |
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133 ::error ("invalid mode specified"); |
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134 } |
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135 |
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136 return retval; |
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137 } |
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138 |
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139 DEFUN (fclose, args, , |
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140 "fclose (FILENUM): close a file") |
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529
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141 { |
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142 double retval = -1.0; |
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529
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143 |
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144 int nargin = args.length (); |
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145 |
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146 if (nargin == 1) |
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147 { |
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148 retval = (double) octave_stream_list::remove (args(0)); |
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149 |
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150 if (retval < 0) |
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151 gripe_invalid_file_id ("fclose"); |
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152 } |
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153 else |
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154 print_usage ("fclose"); |
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155 |
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156 return retval; |
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157 } |
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158 |
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159 DEFUN (fflush, args, , |
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160 "fflush (FILENUM): flush buffered data to output file") |
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161 { |
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162 double retval = -1.0; |
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163 |
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164 int nargin = args.length (); |
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165 |
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166 if (nargin == 1) |
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167 { |
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168 octave_stream *os = octave_stream_list::lookup (args(0)); |
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169 |
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170 if (os) |
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171 retval = (double) os->flush (); |
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172 else |
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173 gripe_invalid_file_id ("fflush"); |
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174 } |
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175 else |
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176 print_usage ("fflush"); |
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177 |
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178 return retval; |
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179 } |
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180 |
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181 DEFUN (fgetl, args, , |
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182 "STRING = fgetl (FILENUM [, LENGTH])\n\ |
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183 \n\ |
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184 read a string from a file") |
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185 { |
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186 octave_value retval = -1.0; |
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187 |
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188 int nargin = args.length (); |
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189 |
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190 if (nargin == 1 || nargin == 2) |
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191 { |
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192 octave_stream *os = octave_stream_list::lookup (args(0)); |
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193 |
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194 if (os) |
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195 { |
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196 octave_value len_arg = (nargin == 2) |
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197 ? args(1) : octave_value ((double) INT_MAX); |
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198 |
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199 bool err = false; |
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200 |
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201 string tmp = os->getl (len_arg, err); |
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202 |
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203 if (! err) |
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204 retval = tmp; |
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205 } |
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206 else |
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207 gripe_invalid_file_id ("fgetl"); |
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208 } |
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209 else |
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210 print_usage ("fgetl"); |
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211 |
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212 return retval; |
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213 } |
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214 |
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215 DEFUN (fgets, args, , |
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216 "STRING = fgets (FILENUM [, LENGTH])\n\ |
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529
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217 \n\ |
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218 read a string from a file") |
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529
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219 { |
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220 octave_value retval = -1.0; |
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221 |
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222 int nargin = args.length (); |
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223 |
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224 if (nargin == 1 || nargin == 2) |
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225 { |
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226 octave_stream *os = octave_stream_list::lookup (args(0)); |
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227 |
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228 if (os) |
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229 { |
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230 octave_value len_arg = (nargin == 2) |
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231 ? args(1) : octave_value ((double) INT_MAX); |
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232 |
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233 bool err = false; |
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234 |
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235 string tmp = os->gets (len_arg, err); |
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236 |
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237 if (! err) |
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238 retval = tmp; |
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239 } |
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240 else |
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241 gripe_invalid_file_id ("fgets"); |
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242 } |
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243 else |
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244 print_usage ("fgets"); |
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245 |
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246 return retval; |
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247 } |
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248 |
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249 static octave_base_stream * |
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250 do_stream_open (const string& name, const string& mode, |
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251 const string& arch, int& fid) |
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252 { |
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253 octave_base_stream *retval = 0; |
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254 |
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255 fid = -1; |
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256 |
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257 int md = fopen_mode_to_ios_mode (mode); |
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258 |
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259 if (! error_state) |
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260 { |
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261 oct_mach_info::float_format flt_fmt = |
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262 oct_mach_info::string_to_float_format (arch); |
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263 |
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264 if (! error_state) |
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265 retval = new octave_fstream (name, md, flt_fmt); |
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266 } |
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267 |
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268 return retval; |
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269 } |
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270 |
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271 static octave_base_stream * |
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272 do_stream_open (const octave_value& tc_name, const octave_value& tc_mode, |
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273 const octave_value& tc_arch, const char *fcn, int& fid) |
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274 { |
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275 octave_base_stream *retval = 0; |
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276 |
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277 fid = -1; |
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278 |
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279 string name = tc_name.string_value (); |
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280 |
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281 if (! error_state) |
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282 { |
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283 string mode = tc_mode.string_value (); |
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284 |
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285 if (! error_state) |
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286 { |
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287 string arch = tc_arch.string_value (); |
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288 |
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289 if (! error_state) |
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290 retval = do_stream_open (name, mode, arch, fid); |
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291 else |
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292 ::error ("%s: architecture type must be a string", fcn); |
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293 } |
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294 else |
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295 ::error ("%s: file mode must be a string", fcn); |
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296 } |
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297 else |
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298 ::error ("%s: file name must be a string", fcn); |
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299 |
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300 return retval; |
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301 } |
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302 |
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303 DEFUN (fopen, args, , |
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304 "[FILENUM, ERRMSG] = fopen (FILENAME, MODE [, ARCH]): open a file\n\ |
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305 \n\ |
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306 FILENAME is a string specifying the name of the file.\n\ |
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307 \n\ |
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308 MODE is a string specifying whether the file should be opened for\n\ |
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309 reading, writing, or both. Valid values for MODE include:\n\ |
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310 \n\ |
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311 r : open text file for reading\n\ |
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312 w : open text file for writing; discard previous contents if any\n\ |
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313 a : append; open or create text file for writing at end of file\n\ |
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314 r+ : open text file for update (i.e., reading and writing)\n\ |
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315 w+ : create text file for update; discard previous contents if any\n\ |
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316 a+ : append; open or create text file for update, writing at end\n\ |
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317 \n\ |
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318 Update mode permits reading from and writing to the same file.\n\ |
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319 \n\ |
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320 ARCH is a string specifying the default data format for the file.\n\ |
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321 Valid values for ARCH are:\n\ |
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322 \n\ |
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323 native -- the format of the current machine (this is the default)\n\ |
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324 ieee-le -- IEEE big endian\n\ |
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325 ieee-be -- IEEE little endian\n\ |
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326 vaxd -- VAX D floating format\n\ |
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327 vaxg -- VAX G floating format\n\ |
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328 cray -- Cray floating format\n\ |
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329 \n\ |
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330 however, conversions are currently only supported for ieee-be, and\n\ |
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331 ieee-le formats.\n\ |
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332 \n\ |
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333 \n\ |
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334 FILENUM is a number that can be used to refer to the open file.\n\ |
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335 If fopen fails, FILENUM is set to -1 and ERRMSG contains a\n\ |
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336 system-dependent error message") |
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529
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337 { |
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338 octave_value_list retval = -1.0; |
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529
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339 |
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340 int nargin = args.length (); |
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341 |
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342 if (nargin == 1) |
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343 { |
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344 if (args(0).is_string () && args(0).string_value () == "all") |
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345 { |
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346 return octave_stream_list::open_file_numbers (); |
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347 } |
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348 else |
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349 { |
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350 string_vector tmp = octave_stream_list::get_info (args(0)); |
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529
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351 |
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352 if (! error_state) |
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353 { |
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354 retval(2) = tmp(2); |
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355 retval(1) = tmp(1); |
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356 retval(0) = tmp(0); |
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357 } |
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1
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358 |
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2095
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359 return retval; |
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360 } |
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1
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361 } |
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362 |
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2095
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363 if (nargin > 0 && nargin < 4) |
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364 { |
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365 octave_value mode = (nargin == 2 || nargin == 3) |
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366 ? args(1) : octave_value ("r"); |
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367 |
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368 octave_value arch = (nargin == 3) |
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369 ? args(2) : octave_value ("native"); |
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370 |
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371 int fid = -1; |
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372 |
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373 octave_base_stream *os |
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374 = do_stream_open (args(0), mode, arch, "fopen", fid); |
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375 |
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376 if (os) |
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377 { |
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378 if (os->ok () && ! error_state) |
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379 { |
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380 retval(1) = ""; |
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381 retval(0) = (double) octave_stream_list::insert (os); |
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382 } |
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383 else |
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384 { |
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385 int errno = 0; |
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386 retval(1) = os->error (false, errno); |
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387 retval(0) = -1.0; |
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388 } |
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389 } |
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390 else |
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391 ::error ("fopen: internal error"); |
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392 } |
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393 else |
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394 print_usage ("fopen"); |
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1
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395 |
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396 return retval; |
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397 } |
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398 |
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1957
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399 DEFUN (freport, args, , |
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1181
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400 "freport (): list open files and their status") |
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401 { |
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2095
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402 octave_value_list retval; |
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1181
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403 |
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404 int nargin = args.length (); |
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405 |
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406 if (nargin > 0) |
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407 warning ("freport: ignoring extra arguments"); |
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408 |
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2095
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409 octave_stdout << octave_stream_list::list_open_files (); |
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1181
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410 |
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411 return retval; |
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412 } |
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413 |
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1957
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414 DEFUN (frewind, args, , |
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2116
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415 "frewind (FILENUM): set file position at beginning of file") |
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529
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416 { |
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2095
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417 double retval = -1.0; |
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1
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418 |
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506
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419 int nargin = args.length (); |
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420 |
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2095
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421 if (nargin == 1) |
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1086
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422 { |
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2095
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423 octave_stream *os = octave_stream_list::lookup (args(0)); |
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636
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424 |
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2095
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425 if (os) |
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426 retval = (double) os->rewind (); |
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1
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427 else |
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2095
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428 gripe_invalid_file_id ("frewind"); |
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1
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429 } |
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430 else |
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2095
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431 print_usage ("frewind"); |
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1
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432 |
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433 return retval; |
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434 } |
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435 |
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1957
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436 DEFUN (fseek, args, , |
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2116
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437 "fseek (FILENUM, OFFSET [, ORIGIN])\n\ |
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1181
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438 \n\ |
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2341
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439 set file position for reading or writing.\n\ |
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440 \n\ |
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441 ORIGIN may be one of:\n\ |
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442 \n\ |
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443 SEEK_SET : offset is relative to the beginning of the file (default)\n\ |
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444 SEEK_CUR : offset is relative to the current position\n\ |
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445 SEEK_END : offset is relative to the end of the file") |
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529
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446 { |
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2095
|
447 double retval = -1.0; |
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529
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448 |
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|
449 int nargin = args.length (); |
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450 |
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2095
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451 if (nargin == 2 || nargin == 3) |
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452 { |
|
|
453 octave_stream *os = octave_stream_list::lookup (args(0)); |
|
1181
|
454 |
|
2095
|
455 if (os) |
|
|
456 { |
|
|
457 octave_value origin_arg = (nargin == 3) |
|
2341
|
458 ? args(2) : octave_value (-1.0); |
|
1
|
459 |
|
2095
|
460 retval = (double) os->seek (args(1), origin_arg); |
|
|
461 } |
|
|
462 else |
|
|
463 ::error ("fseek: invalid file id"); |
|
368
|
464 } |
|
2095
|
465 else |
|
|
466 print_usage ("fseek"); |
|
1
|
467 |
|
|
468 return retval; |
|
|
469 } |
|
|
470 |
|
1957
|
471 DEFUN (ftell, args, , |
|
2116
|
472 "POSITION = ftell (FILENUM): returns the current file position") |
|
1181
|
473 { |
|
2095
|
474 double retval = -1.0; |
|
1
|
475 |
|
506
|
476 int nargin = args.length (); |
|
|
477 |
|
2095
|
478 if (nargin == 1) |
|
1
|
479 { |
|
2095
|
480 octave_stream *os = octave_stream_list::lookup (args(0)); |
|
1
|
481 |
|
2095
|
482 if (os) |
|
|
483 retval = (double) os->tell (); |
|
|
484 else |
|
|
485 gripe_invalid_file_id ("ftell"); |
|
1
|
486 } |
|
|
487 else |
|
2095
|
488 print_usage ("ftell"); |
|
1
|
489 |
|
|
490 return retval; |
|
|
491 } |
|
|
492 |
|
1957
|
493 DEFUN (fprintf, args, , |
|
2116
|
494 "fprintf (FILENUM, FORMAT, ...)") |
|
1181
|
495 { |
|
2095
|
496 double retval = -1.0; |
|
1181
|
497 |
|
|
498 int nargin = args.length (); |
|
|
499 |
|
2095
|
500 if (nargin > 1) |
|
|
501 { |
|
|
502 octave_stream *os = octave_stream_list::lookup (args(0)); |
|
|
503 |
|
|
504 if (os) |
|
|
505 { |
|
|
506 if (args(1).is_string ()) |
|
|
507 { |
|
|
508 string fmt = args(1).string_value (); |
|
|
509 |
|
|
510 octave_value_list tmp_args; |
|
|
511 |
|
|
512 if (nargin > 2) |
|
|
513 { |
|
|
514 tmp_args.resize (nargin-2, octave_value ()); |
|
|
515 |
|
|
516 for (int i = 2; i < nargin; i++) |
|
|
517 tmp_args(i-2) = args(i); |
|
|
518 } |
|
|
519 |
|
|
520 retval = os->printf (fmt, tmp_args); |
|
|
521 } |
|
|
522 else |
|
|
523 ::error ("fprintf: format must be a string"); |
|
|
524 } |
|
|
525 else |
|
|
526 gripe_invalid_file_id ("fprintf"); |
|
|
527 } |
|
|
528 else |
|
1181
|
529 print_usage ("fprintf"); |
|
|
530 |
|
|
531 return retval; |
|
|
532 } |
|
|
533 |
|
2095
|
534 DEFUN (fputs, args, , |
|
2116
|
535 "fputs (FILENUM, STRING)") |
|
1181
|
536 { |
|
2095
|
537 double retval = -1.0; |
|
1181
|
538 |
|
|
539 int nargin = args.length (); |
|
|
540 |
|
2095
|
541 if (nargin == 2) |
|
|
542 { |
|
|
543 octave_stream *os = octave_stream_list::lookup (args(0)); |
|
1181
|
544 |
|
2095
|
545 if (os) |
|
|
546 retval = os->puts (args(1)); |
|
|
547 else |
|
|
548 gripe_invalid_file_id ("fputs"); |
|
|
549 } |
|
1181
|
550 else |
|
2095
|
551 print_usage ("fputs"); |
|
1181
|
552 |
|
|
553 return retval; |
|
|
554 } |
|
|
555 |
|
2095
|
556 DEFUN (sprintf, args, , |
|
|
557 "[s, errmsg, status] = sprintf (FORMAT, ...)") |
|
1
|
558 { |
|
2095
|
559 octave_value_list retval; |
|
1
|
560 |
|
2095
|
561 int nargin = args.length (); |
|
1
|
562 |
|
2095
|
563 if (nargin > 0) |
|
1
|
564 { |
|
2116
|
565 retval(2) = -1.0; |
|
|
566 retval(1) = "unknown error"; |
|
|
567 retval(0) = ""; |
|
|
568 |
|
2095
|
569 octave_ostrstream ostr; |
|
1
|
570 |
|
2148
|
571 octave_stream os (&ostr, true); |
|
628
|
572 |
|
2095
|
573 if (os) |
|
|
574 { |
|
|
575 if (args(0).is_string ()) |
|
|
576 { |
|
|
577 string fmt = args(0).string_value (); |
|
628
|
578 |
|
2095
|
579 octave_value_list tmp_args; |
|
1
|
580 |
|
2095
|
581 if (nargin > 1) |
|
|
582 { |
|
|
583 tmp_args.resize (nargin-1, octave_value ()); |
|
1
|
584 |
|
2095
|
585 for (int i = 1; i < nargin; i++) |
|
|
586 tmp_args(i-1) = args(i); |
|
|
587 } |
|
628
|
588 |
|
2095
|
589 retval(2) = os.printf (fmt, tmp_args); |
|
|
590 retval(1) = os.error (); |
|
|
591 char *tmp = ostr.str (); |
|
|
592 retval(0) = tmp; |
|
|
593 delete [] tmp; |
|
|
594 } |
|
|
595 else |
|
|
596 ::error ("sprintf: format must be a string"); |
|
|
597 } |
|
|
598 else |
|
|
599 ::error ("sprintf: unable to create output buffer"); |
|
1
|
600 } |
|
|
601 else |
|
2095
|
602 print_usage ("sprintf"); |
|
1
|
603 |
|
|
604 return retval; |
|
|
605 } |
|
|
606 |
|
2095
|
607 DEFUN (fscanf, args, , |
|
2122
|
608 "[A, COUNT] = fscanf (FILENUM, FORMAT [, SIZE])\n\ |
|
|
609 \n\ |
|
|
610 Read from FILENUM according to FORMAT, returning the result in the\n\ |
|
|
611 matrix A. SIZE is optional. If present, it can be one of\n\ |
|
|
612 \n\ |
|
|
613 Inf : read as much as possible, returning a column vector\n\ |
|
|
614 (unless doing all character conversions, in which case a\n\ |
|
|
615 string is returned)\n\ |
|
|
616 NR : read as much as possible, returning a matrix with NR rows\n\ |
|
|
617 [NR, NC] : read up to NR x NC elements, returning a matrix with NR rows\n\ |
|
|
618 [NR, Inf] : same as NR\n\ |
|
|
619 \n\ |
|
|
620 If it is omitted, a value of Inf is assumed.\n\ |
|
|
621 \n\ |
|
2215
|
622 The number of items successfully read is returned in COUNT.\n\ |
|
|
623 \n\ |
|
|
624 [A, B, ...] = fscanf (FILENUM, FORMAT, \"C\")\n\ |
|
|
625 \n\ |
|
|
626 Read from FILENUM according to FORMAT, with each conversion specifier\n\ |
|
|
627 in FORMAT corresponding to a single scalar return value. This form is\n\ |
|
|
628 more `C-like', and also compatible with previous versions of Octave") |
|
1181
|
629 { |
|
2095
|
630 octave_value_list retval; |
|
1181
|
631 |
|
|
632 int nargin = args.length (); |
|
|
633 |
|
2215
|
634 if (nargin == 3 && args(2).is_string ()) |
|
2095
|
635 { |
|
|
636 octave_stream *os = octave_stream_list::lookup (args(0)); |
|
1181
|
637 |
|
2095
|
638 if (os) |
|
|
639 { |
|
|
640 if (args(1).is_string ()) |
|
|
641 { |
|
|
642 string fmt = args(1).string_value (); |
|
1181
|
643 |
|
2215
|
644 retval = os->oscanf (fmt); |
|
2095
|
645 } |
|
|
646 else |
|
|
647 ::error ("fscanf: format must be a string"); |
|
|
648 } |
|
|
649 else |
|
|
650 gripe_invalid_file_id ("fscanf"); |
|
|
651 } |
|
1181
|
652 else |
|
2215
|
653 { |
|
|
654 retval (1) = 0.0; |
|
|
655 retval (0) = Matrix (); |
|
|
656 |
|
|
657 if (nargin == 2 || nargin == 3) |
|
|
658 { |
|
|
659 octave_stream *os = octave_stream_list::lookup (args(0)); |
|
|
660 |
|
|
661 if (os) |
|
|
662 { |
|
|
663 if (args(1).is_string ()) |
|
|
664 { |
|
|
665 string fmt = args(1).string_value (); |
|
|
666 |
|
|
667 int count = 0; |
|
|
668 |
|
|
669 Matrix size = (nargin == 3) |
|
|
670 ? args(2).matrix_value () : Matrix (1, 1, octave_Inf); |
|
|
671 |
|
|
672 if (! error_state) |
|
|
673 { |
|
|
674 octave_value tmp = os->scanf (fmt, size, count); |
|
|
675 |
|
|
676 retval(1) = (double) count; |
|
|
677 retval(0) = tmp; |
|
|
678 } |
|
|
679 } |
|
|
680 else |
|
|
681 ::error ("fscanf: format must be a string"); |
|
|
682 } |
|
|
683 else |
|
|
684 gripe_invalid_file_id ("fscanf"); |
|
|
685 } |
|
|
686 else |
|
|
687 print_usage ("fscanf"); |
|
|
688 } |
|
1181
|
689 |
|
|
690 return retval; |
|
|
691 } |
|
|
692 |
|
2095
|
693 DEFUN (sscanf, args, , |
|
2122
|
694 "[A, COUNT, ERRMSG, INDEX] = sscanf (STRING, FORMAT, SIZE)\n\ |
|
|
695 \n\ |
|
2215
|
696 Read from STRING according to FORMAT, returning the result in the\n\ |
|
2122
|
697 matrix A. SIZE is optional. If present, it can be one of\n\ |
|
|
698 \n\ |
|
|
699 Inf : read as much as possible, returning a column vector\n\ |
|
|
700 (unless doing all character conversions, in which case a\n\ |
|
|
701 string is returned)\n\ |
|
|
702 NR : read as much as possible, returning a matrix with NR rows\n\ |
|
|
703 [NR, NC] : read up to NR x NC elements, returning a matrix with NR rows\n\ |
|
|
704 [NR, Inf] : same as NR\n\ |
|
|
705 \n\ |
|
|
706 If it is omitted, a value of Inf is assumed.\n\ |
|
|
707 \n\ |
|
|
708 The number of items successfully read is returned in COUNT. If an\n\ |
|
|
709 error occurs, ERRMSG contains the text of the corresponding error\n\ |
|
|
710 message. INDEX contains the index of the next character to be read\n\ |
|
2215
|
711 from STRING\n\ |
|
|
712 \n\ |
|
|
713 [A, B, ...] = sscanf (STRING, FORMAT, \"C\")\n\ |
|
|
714 \n\ |
|
|
715 Read from STRING according to FORMAT, with each conversion specifier\n\ |
|
|
716 in FORMAT corresponding to a single scalar return value. This form is\n\ |
|
|
717 more `C-like', and also compatible with previous versions of Octave") |
|
444
|
718 { |
|
2095
|
719 octave_value_list retval; |
|
444
|
720 |
|
506
|
721 int nargin = args.length (); |
|
|
722 |
|
2215
|
723 if (nargin == 3 && args(2).is_string ()) |
|
2095
|
724 { |
|
|
725 if (args(0).is_string ()) |
|
|
726 { |
|
|
727 string data = args(0).string_value (); |
|
444
|
728 |
|
2095
|
729 octave_istrstream istr (data); |
|
1358
|
730 |
|
2148
|
731 octave_stream os (&istr, true); |
|
636
|
732 |
|
2095
|
733 if (os) |
|
|
734 { |
|
|
735 if (args(1).is_string ()) |
|
|
736 { |
|
|
737 string fmt = args(1).string_value (); |
|
444
|
738 |
|
2215
|
739 retval = os.oscanf (fmt); |
|
2095
|
740 } |
|
|
741 else |
|
|
742 ::error ("sscanf: format must be a string"); |
|
|
743 } |
|
|
744 else |
|
|
745 ::error ("sscanf: unable to create temporary input buffer"); |
|
444
|
746 } |
|
636
|
747 else |
|
2095
|
748 ::error ("sscanf: first argument must be a string"); |
|
444
|
749 } |
|
|
750 else |
|
2215
|
751 { |
|
|
752 if (nargin == 2 || nargin == 3) |
|
|
753 { |
|
|
754 retval(3) = -1.0; |
|
|
755 retval(2) = "unknown error"; |
|
|
756 retval(1) = 0.0; |
|
|
757 retval(0) = Matrix (); |
|
|
758 |
|
|
759 if (args(0).is_string ()) |
|
|
760 { |
|
|
761 string data = args(0).string_value (); |
|
|
762 |
|
|
763 octave_istrstream istr (data); |
|
|
764 |
|
|
765 octave_stream os (&istr, true); |
|
|
766 |
|
|
767 if (os) |
|
|
768 { |
|
|
769 if (args(1).is_string ()) |
|
|
770 { |
|
|
771 string fmt = args(1).string_value (); |
|
|
772 |
|
|
773 int count = 0; |
|
|
774 |
|
|
775 Matrix size = (nargin == 3) |
|
|
776 ? args(2).matrix_value () : Matrix (1, 1, octave_Inf); |
|
|
777 |
|
|
778 octave_value tmp = os.scanf (fmt, size, count); |
|
|
779 |
|
|
780 // XXX FIXME XXX -- is this the right thing to do? |
|
|
781 // Extract error message first, because getting |
|
|
782 // position will clear it. |
|
|
783 string errmsg = os.error (); |
|
|
784 |
|
|
785 retval(3) = (double) (os.tell () + 1); |
|
|
786 retval(2) = errmsg; |
|
|
787 retval(1) = (double) count; |
|
|
788 retval(0) = tmp; |
|
|
789 } |
|
|
790 else |
|
|
791 ::error ("sscanf: format must be a string"); |
|
|
792 } |
|
|
793 else |
|
|
794 ::error ("sscanf: unable to create temporary input buffer"); |
|
|
795 } |
|
|
796 else |
|
|
797 ::error ("sscanf: first argument must be a string"); |
|
|
798 } |
|
|
799 else |
|
|
800 print_usage ("sscanf"); |
|
|
801 } |
|
444
|
802 |
|
|
803 return retval; |
|
|
804 } |
|
|
805 |
|
2215
|
806 DEFUN (scanf, args, nargout, |
|
|
807 "scanf (FORMAT) is equivalent to fscanf (stdin, FORMAT)") |
|
|
808 { |
|
|
809 int nargin = args.length (); |
|
|
810 |
|
|
811 octave_value_list tmp_args (nargin+1, octave_value ()); |
|
|
812 |
|
|
813 tmp_args (0) = 0.0; |
|
|
814 for (int i = 0; i < nargin; i++) |
|
|
815 tmp_args (i+1) = args (i); |
|
|
816 |
|
|
817 return Ffscanf (tmp_args, nargout); |
|
|
818 } |
|
|
819 |
|
2116
|
820 static octave_value |
|
|
821 do_fread (octave_stream& os, const octave_value& size_arg, |
|
|
822 const octave_value& prec_arg, const octave_value& skip_arg, |
|
|
823 const octave_value& arch_arg, int& count) |
|
|
824 { |
|
|
825 octave_value retval; |
|
|
826 |
|
|
827 count = -1; |
|
|
828 |
|
|
829 Matrix size = size_arg.matrix_value (); |
|
|
830 |
|
|
831 if (! error_state) |
|
|
832 { |
|
|
833 string prec = prec_arg.string_value (); |
|
|
834 |
|
|
835 if (! error_state) |
|
|
836 { |
|
2318
|
837 oct_data_conv::data_type dt |
|
|
838 = oct_data_conv::string_to_data_type (prec); |
|
2116
|
839 |
|
|
840 if (! error_state) |
|
|
841 { |
|
|
842 double dskip = skip_arg.double_value (); |
|
|
843 |
|
|
844 if (! error_state) |
|
|
845 { |
|
|
846 if (D_NINT (dskip) == dskip) |
|
|
847 { |
|
|
848 int skip = NINT (dskip); |
|
|
849 |
|
|
850 string arch = arch_arg.string_value (); |
|
|
851 |
|
|
852 if (! error_state) |
|
|
853 { |
|
2318
|
854 oct_mach_info::float_format flt_fmt |
|
|
855 = oct_mach_info::string_to_float_format (arch); |
|
2116
|
856 |
|
|
857 if (! error_state) |
|
2318
|
858 retval = os.read (size, dt, skip, flt_fmt, count); |
|
2116
|
859 } |
|
|
860 else |
|
|
861 ::error ("fread: architecture type must be a string"); |
|
|
862 } |
|
|
863 else |
|
|
864 ::error ("fread: skip must be an integer"); |
|
|
865 } |
|
|
866 else |
|
|
867 ::error ("fread: invalid skip specified"); |
|
|
868 } |
|
|
869 else |
|
|
870 ::error ("fread: invalid data type specified"); |
|
|
871 } |
|
|
872 else |
|
|
873 ::error ("fread: precision must be a string"); |
|
|
874 } |
|
|
875 else |
|
|
876 ::error ("fread: invalid size specified"); |
|
|
877 |
|
|
878 return retval; |
|
|
879 } |
|
|
880 |
|
|
881 DEFUN (fread, args, , |
|
|
882 "[DATA, COUNT] = fread (FILENUM [, SIZE] [, PRECISION] [, SKIP] [, ARCH])\n\ |
|
529
|
883 \n\ |
|
2318
|
884 Reads data in binary form of type PRECISION from a file.\n\ |
|
|
885 \n\ |
|
|
886 FILENUM : file number from fopen\n\ |
|
529
|
887 \n\ |
|
2318
|
888 SIZE : size specification for the data matrix\n\ |
|
|
889 \n\ |
|
|
890 PRECISION : string specifying type of data to read, valid types are\n\ |
|
529
|
891 \n\ |
|
2318
|
892 char, char*1, integer*1, int8 -- character\n\ |
|
|
893 schar, signed char -- signed character\n\ |
|
|
894 uchar, unsigned char -- unsigned character (default)\n\ |
|
|
895 short -- short integer\n\ |
|
|
896 ushort, unsigned short -- unsigned short integer\n\ |
|
|
897 int -- integer\n\ |
|
|
898 uint, unsigned int -- unsigned integer\n\ |
|
|
899 long -- long integer\n\ |
|
|
900 ulong, unsigned long -- unsigned long integer\n\ |
|
|
901 float, float32, real*4 -- single precision float\n\ |
|
|
902 double, float64, real*8 -- double precision float\n\ |
|
|
903 int16, integer*2 -- two byte integer\n\ |
|
|
904 int32, integer*4 -- four byte integer\n\ |
|
|
905 \n\ |
|
|
906 SKIP : number of bytes to skip before each element is read\n\ |
|
|
907 (default is 0)\n\ |
|
529
|
908 \n\ |
|
2318
|
909 ARCH : string specifying the data format for the file. Valid |
|
|
910 values are\n\ |
|
|
911 \n\ |
|
|
912 native -- the format of the current machine (default)\n\ |
|
|
913 ieee-le -- IEEE big endian\n\ |
|
|
914 ieee-be -- IEEE little endian\n\ |
|
|
915 vaxd -- VAX D floating format\n\ |
|
|
916 vaxg -- VAX G floating format\n\ |
|
2324
|
917 cray -- Cray floating format\n\ |
|
2318
|
918 \n\ |
|
2324
|
919 however, conversions are currently only supported for\n\ |
|
|
920 ieee-be, and ieee-le formats.\n\ |
|
2318
|
921 \n\ |
|
|
922 \n\ |
|
|
923 DATA : matrix in which the data is stored\n\ |
|
|
924 \n\ |
|
|
925 COUNT : number of elements read") |
|
529
|
926 { |
|
2095
|
927 octave_value_list retval; |
|
2116
|
928 |
|
|
929 int nargin = args.length (); |
|
|
930 |
|
2318
|
931 if (nargin > 0 && nargin < 6) |
|
2116
|
932 { |
|
|
933 retval(1) = -1.0; |
|
|
934 retval(0) = Matrix (); |
|
|
935 |
|
|
936 octave_stream *os = octave_stream_list::lookup (args(0)); |
|
|
937 |
|
|
938 if (os) |
|
|
939 { |
|
|
940 octave_value size = (nargin > 1) |
|
|
941 ? args(1) : octave_value (octave_Inf); |
|
|
942 |
|
|
943 octave_value prec = (nargin > 2) |
|
|
944 ? args(2) : octave_value ("uchar"); |
|
|
945 |
|
|
946 octave_value skip = (nargin > 3) |
|
|
947 ? args(3) : octave_value (0.0); |
|
|
948 |
|
|
949 octave_value arch = (nargin > 4) |
|
2318
|
950 ? args(4) : octave_value ("unknown"); |
|
2116
|
951 |
|
|
952 int count = -1; |
|
|
953 |
|
|
954 octave_value tmp = do_fread (*os, size, prec, skip, arch, count); |
|
|
955 |
|
|
956 retval(1) = (double) count; |
|
|
957 retval(0) = tmp; |
|
|
958 } |
|
|
959 else |
|
|
960 gripe_invalid_file_id ("fread"); |
|
|
961 } |
|
|
962 else |
|
|
963 print_usage ("fread"); |
|
|
964 |
|
529
|
965 return retval; |
|
|
966 } |
|
|
967 |
|
2116
|
968 static int |
|
|
969 do_fwrite (octave_stream& os, const octave_value& data, |
|
|
970 const octave_value& prec_arg, const octave_value& skip_arg, |
|
|
971 const octave_value& arch_arg) |
|
|
972 { |
|
|
973 int retval = -1; |
|
|
974 |
|
|
975 string prec = prec_arg.string_value (); |
|
|
976 |
|
|
977 if (! error_state) |
|
|
978 { |
|
2318
|
979 oct_data_conv::data_type dt |
|
|
980 = oct_data_conv::string_to_data_type (prec); |
|
2116
|
981 |
|
|
982 if (! error_state) |
|
|
983 { |
|
|
984 double dskip = skip_arg.double_value (); |
|
|
985 |
|
|
986 if (! error_state) |
|
|
987 { |
|
|
988 if (D_NINT (dskip) == dskip) |
|
|
989 { |
|
|
990 int skip = NINT (dskip); |
|
|
991 |
|
|
992 string arch = arch_arg.string_value (); |
|
|
993 |
|
|
994 if (! error_state) |
|
|
995 { |
|
2318
|
996 oct_mach_info::float_format flt_fmt |
|
|
997 = oct_mach_info::string_to_float_format (arch); |
|
2116
|
998 |
|
|
999 if (! error_state) |
|
2318
|
1000 retval = os.write (data, dt, skip, flt_fmt); |
|
2116
|
1001 } |
|
|
1002 else |
|
|
1003 ::error ("fwrite: architecture type must be a string"); |
|
|
1004 } |
|
|
1005 else |
|
|
1006 ::error ("fwrite: skip must be an integer"); |
|
|
1007 } |
|
|
1008 else |
|
|
1009 ::error ("fwrite: invalid skip specified"); |
|
|
1010 } |
|
|
1011 } |
|
|
1012 else |
|
|
1013 ::error ("fwrite: precision must be a string"); |
|
|
1014 |
|
|
1015 return retval; |
|
|
1016 } |
|
|
1017 |
|
|
1018 DEFUN (fwrite, args, , |
|
|
1019 "COUNT = fwrite (FILENUM, DATA [, PRECISION] [, SKIP] [, ARCH])\n\ |
|
1181
|
1020 \n\ |
|
2318
|
1021 Writes data to a file in binary form of size PRECISION\n\ |
|
|
1022 \n\ |
|
|
1023 FILENUM : file number from fopen\n\ |
|
|
1024 \n\ |
|
|
1025 DATA : matrix of elements to be written\n\ |
|
|
1026 \n\ |
|
|
1027 PRECISION : string specifying type of data to read, valid types are\n\ |
|
1181
|
1028 \n\ |
|
2318
|
1029 char, char*1, integer*1, int8 -- character\n\ |
|
|
1030 schar, signed char -- signed character\n\ |
|
|
1031 uchar, unsigned char -- unsigned character (default)\n\ |
|
|
1032 short -- short integer\n\ |
|
|
1033 ushort, unsigned short -- unsigned short integer\n\ |
|
|
1034 int -- integer\n\ |
|
|
1035 uint, unsigned int -- unsigned integer\n\ |
|
|
1036 long -- long integer\n\ |
|
|
1037 ulong, unsigned long -- unsigned long integer\n\ |
|
|
1038 float, float32, real*4 -- single precision float\n\ |
|
|
1039 double, float64, real*8 -- double precision float\n\ |
|
|
1040 int16, integer*2 -- two byte integer\n\ |
|
|
1041 int32, integer*4 -- four byte integer\n\ |
|
1181
|
1042 \n\ |
|
2318
|
1043 SKIP : number of bytes to skip before each element is read\n\ |
|
|
1044 (the default is 0)\n\ |
|
|
1045 \n\ |
|
|
1046 ARCH : string specifying the data format for the file. Valid |
|
|
1047 values are\n\ |
|
1181
|
1048 \n\ |
|
2318
|
1049 native -- the format of the current machine (default)\n\ |
|
|
1050 ieee-le -- IEEE big endian\n\ |
|
|
1051 ieee-be -- IEEE little endian\n\ |
|
|
1052 vaxd -- VAX D floating format\n\ |
|
|
1053 vaxg -- VAX G floating format\n\ |
|
|
1054 cray -- Cray floating format\n |
|
|
1055 \n\ |
|
|
1056 however, conversions are currently only supported for ieee-be, and\n\ |
|
|
1057 ieee-le formats.\n\ |
|
|
1058 \n\ |
|
|
1059 \n\ |
|
|
1060 COUNT : number of elements written") |
|
1181
|
1061 { |
|
2116
|
1062 octave_value retval = -1.0; |
|
|
1063 |
|
|
1064 int nargin = args.length (); |
|
|
1065 |
|
|
1066 if (nargin > 1 && nargin < 6) |
|
|
1067 { |
|
|
1068 octave_stream *os = octave_stream_list::lookup (args(0)); |
|
|
1069 |
|
|
1070 if (os) |
|
|
1071 { |
|
|
1072 octave_value data = args(1); |
|
2318
|
1073 |
|
|
1074 octave_value prec = (nargin > 2) |
|
|
1075 ? args(2) : octave_value ("uchar"); |
|
|
1076 |
|
|
1077 octave_value skip = (nargin > 3) |
|
|
1078 ? args(3) : octave_value (0.0); |
|
|
1079 |
|
|
1080 octave_value arch = (nargin > 4) |
|
|
1081 ? args(4) : octave_value ("unknown"); |
|
2116
|
1082 |
|
|
1083 retval = do_fwrite (*os, data, prec, skip, arch); |
|
|
1084 } |
|
|
1085 else |
|
|
1086 gripe_invalid_file_id ("fwrite"); |
|
|
1087 } |
|
|
1088 else |
|
|
1089 print_usage ("fwrite"); |
|
|
1090 |
|
1181
|
1091 return retval; |
|
|
1092 } |
|
|
1093 |
|
1957
|
1094 DEFUN (feof, args, , |
|
2116
|
1095 "ERROR = feof (FILENUM)\n\ |
|
529
|
1096 \n\ |
|
|
1097 Returns a non zero value for an end of file condition for the\n\ |
|
2116
|
1098 file specified by FILENUM from fopen") |
|
529
|
1099 { |
|
2095
|
1100 double retval = -1.0; |
|
529
|
1101 |
|
|
1102 int nargin = args.length (); |
|
|
1103 |
|
2095
|
1104 if (nargin == 1) |
|
|
1105 { |
|
|
1106 octave_stream *os = octave_stream_list::lookup (args(0)); |
|
444
|
1107 |
|
2095
|
1108 if (os) |
|
|
1109 retval = os->eof () ? 1.0 : 0.0; |
|
|
1110 else |
|
|
1111 gripe_invalid_file_id ("feof"); |
|
|
1112 } |
|
529
|
1113 else |
|
2095
|
1114 print_usage ("feof"); |
|
444
|
1115 |
|
|
1116 return retval; |
|
|
1117 } |
|
|
1118 |
|
2095
|
1119 DEFUN (ferror, args, , |
|
2116
|
1120 "ERROR = ferror (FILENUM, [\"clear\"])\n\ |
|
2095
|
1121 \n\ |
|
|
1122 Returns a non zero value for an error condition on the\n\ |
|
2116
|
1123 file specified by FILENUM from fopen") |
|
1230
|
1124 { |
|
2095
|
1125 octave_value_list retval; |
|
1230
|
1126 |
|
2095
|
1127 int nargin = args.length (); |
|
1230
|
1128 |
|
2095
|
1129 if (nargin == 1 || nargin == 2) |
|
|
1130 { |
|
|
1131 octave_stream *os = octave_stream_list::lookup (args(0)); |
|
1230
|
1132 |
|
2095
|
1133 if (os) |
|
|
1134 { |
|
|
1135 bool clear = false; |
|
1230
|
1136 |
|
2095
|
1137 if (nargin == 2) |
|
|
1138 { |
|
|
1139 string opt = args(1).string_value (); |
|
|
1140 |
|
|
1141 if (! error_state) |
|
|
1142 clear = (opt == "clear"); |
|
|
1143 else |
|
|
1144 return retval; |
|
|
1145 } |
|
1755
|
1146 |
|
2095
|
1147 int error_number = 0; |
|
|
1148 |
|
|
1149 string error_message = os->error (clear, error_number); |
|
1230
|
1150 |
|
2095
|
1151 retval(1) = (double) error_number; |
|
|
1152 retval(0) = error_message; |
|
|
1153 } |
|
|
1154 else |
|
|
1155 gripe_invalid_file_id ("ferror"); |
|
1230
|
1156 } |
|
2095
|
1157 else |
|
|
1158 print_usage ("ferror"); |
|
1230
|
1159 |
|
|
1160 return retval; |
|
|
1161 } |
|
|
1162 |
|
1957
|
1163 DEFUN (popen, args, , |
|
1230
|
1164 "FILENUM = popen (FILENAME, MODE)\n\ |
|
|
1165 \n\ |
|
|
1166 start a process and create a pipe. Valid values for mode are:\n\ |
|
|
1167 \n\ |
|
|
1168 \"r\" : connect stdout of process to pipe\n\ |
|
|
1169 \"w\" : connect stdin of process to pipe") |
|
|
1170 { |
|
2095
|
1171 double retval = -1.0; |
|
1230
|
1172 |
|
|
1173 int nargin = args.length (); |
|
|
1174 |
|
2095
|
1175 if (nargin == 2) |
|
|
1176 { |
|
|
1177 string name = args(0).string_value (); |
|
1230
|
1178 |
|
2095
|
1179 if (! error_state) |
|
|
1180 { |
|
|
1181 string mode = args(1).string_value (); |
|
1230
|
1182 |
|
2095
|
1183 if (! error_state) |
|
|
1184 { |
|
|
1185 if (mode == "r") |
|
|
1186 { |
|
|
1187 octave_iprocstream *ips = new octave_iprocstream (name); |
|
1230
|
1188 |
|
2095
|
1189 retval = octave_stream_list::insert (ips); |
|
|
1190 } |
|
|
1191 else if (mode == "w") |
|
|
1192 { |
|
|
1193 octave_oprocstream *ops = new octave_oprocstream (name); |
|
1230
|
1194 |
|
2095
|
1195 retval = octave_stream_list::insert (ops); |
|
|
1196 } |
|
|
1197 else |
|
|
1198 ::error ("popen: invalid mode specified"); |
|
|
1199 } |
|
|
1200 else |
|
|
1201 ::error ("popen: mode must be a string"); |
|
|
1202 } |
|
|
1203 else |
|
|
1204 ::error ("popen: name must be a string"); |
|
|
1205 } |
|
1230
|
1206 else |
|
2095
|
1207 print_usage ("popen"); |
|
1230
|
1208 |
|
|
1209 return retval; |
|
|
1210 } |
|
|
1211 |
|
1957
|
1212 DEFUN (pclose, args, , |
|
2116
|
1213 "pclose (FILENUM)\n\ |
|
1230
|
1214 \n\ |
|
|
1215 Close a pipe and terminate the associated process") |
|
|
1216 { |
|
2095
|
1217 double retval = -1.0; |
|
1230
|
1218 |
|
|
1219 int nargin = args.length (); |
|
|
1220 |
|
2095
|
1221 if (nargin == 1) |
|
1230
|
1222 { |
|
2095
|
1223 retval = (double) octave_stream_list::remove (args(0)); |
|
1230
|
1224 |
|
2095
|
1225 if (retval < 0) |
|
|
1226 gripe_invalid_file_id ("pclose"); |
|
1377
|
1227 } |
|
|
1228 else |
|
2095
|
1229 print_usage ("pclose"); |
|
1379
|
1230 |
|
|
1231 return retval; |
|
|
1232 } |
|
|
1233 |
|
1957
|
1234 DEFUN (octave_tmp_file_name, args, , |
|
2237
|
1235 "octave_tmp_file_name ()\n\ |
|
|
1236 Return unique temporary file name.") |
|
1802
|
1237 { |
|
2095
|
1238 octave_value retval; |
|
1802
|
1239 |
|
|
1240 if (args.length () == 0) |
|
|
1241 retval = oct_tempnam (); |
|
|
1242 else |
|
|
1243 print_usage ("octave_tmp_file_name"); |
|
|
1244 |
|
|
1245 return retval; |
|
|
1246 } |
|
|
1247 |
|
1400
|
1248 static int |
|
|
1249 convert (int x, int ibase, int obase) |
|
|
1250 { |
|
|
1251 int retval = 0; |
|
|
1252 |
|
|
1253 int tmp = x % obase; |
|
|
1254 |
|
|
1255 if (tmp > ibase - 1) |
|
2095
|
1256 ::error ("umask: invalid digit"); |
|
1400
|
1257 else |
|
|
1258 { |
|
|
1259 retval = tmp; |
|
|
1260 int mult = ibase; |
|
|
1261 while ((x = (x - tmp) / obase)) |
|
|
1262 { |
|
|
1263 tmp = x % obase; |
|
|
1264 if (tmp > ibase - 1) |
|
|
1265 { |
|
2095
|
1266 ::error ("umask: invalid digit"); |
|
1400
|
1267 break; |
|
|
1268 } |
|
|
1269 retval += mult * tmp; |
|
|
1270 mult *= ibase; |
|
|
1271 } |
|
|
1272 } |
|
|
1273 |
|
|
1274 return retval; |
|
|
1275 } |
|
|
1276 |
|
1957
|
1277 DEFUN (umask, args, , |
|
1400
|
1278 "umask (MASK)\n\ |
|
|
1279 \n\ |
|
|
1280 Change the file permission mask for file creation for the current |
|
|
1281 process. MASK is an integer, interpreted as an octal number. If |
|
|
1282 successful, returns the previous value of the mask (as an integer to |
|
|
1283 be interpreted as an octal number); otherwise an error message is |
|
|
1284 printed.") |
|
|
1285 { |
|
2095
|
1286 octave_value_list retval; |
|
1400
|
1287 |
|
|
1288 int status = 0; |
|
|
1289 |
|
|
1290 if (args.length () == 1) |
|
|
1291 { |
|
|
1292 double dmask = args(0).double_value (); |
|
|
1293 |
|
|
1294 if (error_state) |
|
|
1295 { |
|
|
1296 status = -1; |
|
2095
|
1297 ::error ("umask: expecting integer argument"); |
|
1400
|
1298 } |
|
|
1299 else |
|
|
1300 { |
|
|
1301 int mask = NINT (dmask); |
|
|
1302 |
|
|
1303 if ((double) mask != dmask || mask < 0) |
|
|
1304 { |
|
|
1305 status = -1; |
|
2095
|
1306 ::error ("umask: MASK must be a positive integer value"); |
|
1400
|
1307 } |
|
|
1308 else |
|
|
1309 { |
|
|
1310 int oct_mask = convert (mask, 8, 10); |
|
|
1311 |
|
|
1312 if (! error_state) |
|
1773
|
1313 status = convert (oct_umask (oct_mask), 10, 8); |
|
1400
|
1314 } |
|
|
1315 } |
|
|
1316 } |
|
|
1317 else |
|
|
1318 print_usage ("umask"); |
|
|
1319 |
|
|
1320 if (status >= 0) |
|
|
1321 retval(0) = (double) status; |
|
|
1322 |
|
|
1323 return retval; |
|
|
1324 } |
|
|
1325 |
|
2189
|
1326 void |
|
|
1327 symbols_of_file_io (void) |
|
|
1328 { |
|
2341
|
1329 // NOTE: the values of SEEK_SET, SEEK_CUR, and SEEK_END have to be |
|
|
1330 // this way for Matlab compatibility. |
|
|
1331 |
|
|
1332 DEFCONST (SEEK_SET, -1.0, 0, 0, |
|
2189
|
1333 "used with fseek to position file relative to the beginning"); |
|
|
1334 |
|
2341
|
1335 DEFCONST (SEEK_CUR, 0.0, 0, 0, |
|
2189
|
1336 "used with fseek to position file relative to the current position"); |
|
|
1337 |
|
2341
|
1338 DEFCONST (SEEK_END, 1.0, 0, 0, |
|
2189
|
1339 "used with fseek to position file relative to the end"); |
|
|
1340 |
|
|
1341 DEFCONSTX ("stdin", SBV_stdin, 0.0, 0, 0, |
|
|
1342 "file number of the standard input stream"); |
|
|
1343 |
|
|
1344 DEFCONSTX ("stdout", SBV_stdout, 1.0, 0, 0, |
|
|
1345 "file number of the standard output stream"); |
|
|
1346 |
|
|
1347 DEFCONSTX ("stderr", SBV_stderr, 2.0, 0, 0, |
|
|
1348 "file number of the standard error stream"); |
|
|
1349 } |
|
|
1350 |
|
444
|
1351 /* |
|
1
|
1352 ;;; Local Variables: *** |
|
|
1353 ;;; mode: C++ *** |
|
|
1354 ;;; End: *** |
|
|
1355 */ |
