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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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2442
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46 #ifdef HAVE_SYS_TYPES_H |
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47 #include <sys/types.h> |
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48 #endif |
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49 #include <unistd.h> |
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50 #endif |
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51 |
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52 #include "defun.h" |
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53 #include "error.h" |
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1766
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54 #include "file-ops.h" |
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542
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55 #include "help.h" |
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2116
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56 #include "lo-ieee.h" |
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57 #include "oct-fstrm.h" |
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58 #include "oct-iostrm.h" |
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1377
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59 #include "oct-map.h" |
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60 #include "oct-obj.h" |
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61 #include "oct-prcstrm.h" |
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62 #include "oct-stream.h" |
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63 #include "oct-strstrm.h" |
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64 #include "pager.h" |
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444
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65 #include "sysdep.h" |
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1352
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66 #include "syswait.h" |
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67 #include "utils.h" |
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2370
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68 #include "variables.h" |
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69 |
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70 void |
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164
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71 initialize_file_io (void) |
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1
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72 { |
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73 octave_istream *stdin_stream |
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74 = new octave_istream (&cin, "stdin"); |
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75 |
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76 // This uses octave_stdout (see pager.h), not cout so that Octave's |
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77 // standard output stream will pass through the pager. |
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78 |
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79 octave_ostream *stdout_stream |
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80 = new octave_ostream (&octave_stdout, "stdout"); |
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81 |
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82 octave_ostream *stderr_stream |
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83 = new octave_ostream (&cerr, "stderr"); |
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84 |
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85 octave_stream_list::insert (stdin_stream); |
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86 octave_stream_list::insert (stdout_stream); |
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87 octave_stream_list::insert (stderr_stream); |
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88 } |
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89 |
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90 void |
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91 close_files (void) |
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92 { |
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93 octave_stream_list::clear (); |
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94 } |
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636
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95 |
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96 static void |
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97 gripe_invalid_file_id (const char *fcn) |
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98 { |
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99 ::error ("%s: invalid file id", fcn); |
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100 } |
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101 |
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102 static int |
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103 fopen_mode_to_ios_mode (const string& mode) |
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104 { |
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105 int retval = 0; |
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106 |
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107 if (! mode.empty ()) |
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368
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108 { |
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109 // Could probably be faster, but does it really matter? |
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110 |
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111 if (mode == "r") |
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112 retval = ios::in; |
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113 else if (mode == "w") |
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114 retval = ios::out | ios::trunc; |
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115 else if (mode == "a") |
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116 retval = ios::out | ios::app; |
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117 else if (mode == "r+") |
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118 retval = ios::in | ios::out; |
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119 else if (mode == "w+") |
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120 retval = ios::in | ios::out | ios::trunc; |
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121 else if (mode == "a+") |
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122 retval = ios::in | ios::out | ios::app; |
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123 else if (mode == "rb") |
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124 retval = ios::in | ios::bin; |
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125 else if (mode == "wb") |
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126 retval = ios::out | ios::trunc | ios::bin; |
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127 else if (mode == "ab") |
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128 retval = ios::out | ios::app | ios::bin; |
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129 else if (mode == "r+b") |
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130 retval = ios::in | ios::out | ios::bin; |
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131 else if (mode == "w+b") |
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132 retval = ios::in | ios::out | ios::trunc | ios::bin; |
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133 else if (mode == "a+b") |
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134 retval = ios::in | ios::out | ios::app | ios::bin; |
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368
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135 else |
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136 ::error ("invalid mode specified"); |
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137 } |
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138 |
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139 return retval; |
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140 } |
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141 |
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142 DEFUN (fclose, args, , |
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143 "fclose (FILENUM): close a file") |
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529
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144 { |
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145 double retval = -1.0; |
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529
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146 |
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147 int nargin = args.length (); |
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148 |
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149 if (nargin == 1) |
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150 { |
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151 retval = (double) octave_stream_list::remove (args(0)); |
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152 |
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153 if (retval < 0) |
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154 gripe_invalid_file_id ("fclose"); |
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155 } |
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156 else |
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157 print_usage ("fclose"); |
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158 |
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159 return retval; |
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160 } |
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161 |
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162 DEFUN (fflush, args, , |
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163 "fflush (FILENUM): flush buffered data to output file") |
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164 { |
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165 double retval = -1.0; |
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166 |
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167 int nargin = args.length (); |
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168 |
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169 if (nargin == 1) |
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170 { |
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171 octave_stream *os = octave_stream_list::lookup (args(0)); |
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172 |
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173 if (os) |
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174 retval = (double) os->flush (); |
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175 else |
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176 gripe_invalid_file_id ("fflush"); |
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177 } |
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178 else |
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179 print_usage ("fflush"); |
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180 |
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181 return retval; |
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182 } |
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183 |
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184 DEFUN (fgetl, args, , |
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185 "[STRING, LENGTH] = fgetl (FILENUM [, LENGTH])\n\ |
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186 \n\ |
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187 read a string from a file") |
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188 { |
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189 octave_value_list retval; |
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190 |
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191 retval(1) = 0.0; |
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192 retval(0) = -1.0; |
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193 |
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194 int nargin = args.length (); |
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195 |
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196 if (nargin == 1 || nargin == 2) |
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197 { |
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198 octave_stream *os = octave_stream_list::lookup (args(0)); |
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199 |
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200 if (os) |
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201 { |
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202 octave_value len_arg = (nargin == 2) |
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203 ? args(1) : octave_value ((double) INT_MAX); |
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204 |
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205 bool err = false; |
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206 |
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207 string tmp = os->getl (len_arg, err); |
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208 |
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209 if (! err) |
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210 { |
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211 retval(1) = (double) tmp.length (); |
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212 retval(0) = tmp; |
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213 } |
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214 } |
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215 else |
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216 gripe_invalid_file_id ("fgetl"); |
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217 } |
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218 else |
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219 print_usage ("fgetl"); |
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220 |
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221 return retval; |
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222 } |
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223 |
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224 DEFUN (fgets, args, , |
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225 "[STRING, LENGTH] = fgets (FILENUM [, LENGTH])\n\ |
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226 \n\ |
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227 read a string from a file") |
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529
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228 { |
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229 octave_value_list retval; |
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230 |
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231 retval(1) = 0.0; |
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232 retval(0) = -1.0; |
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529
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233 |
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234 int nargin = args.length (); |
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235 |
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236 if (nargin == 1 || nargin == 2) |
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237 { |
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238 octave_stream *os = octave_stream_list::lookup (args(0)); |
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239 |
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240 if (os) |
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241 { |
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242 octave_value len_arg = (nargin == 2) |
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243 ? args(1) : octave_value ((double) INT_MAX); |
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244 |
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245 bool err = false; |
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246 |
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247 string tmp = os->gets (len_arg, err); |
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248 |
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249 if (! err) |
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250 { |
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251 retval(1) = (double) tmp.length (); |
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252 retval(0) = tmp; |
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253 } |
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254 } |
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255 else |
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256 gripe_invalid_file_id ("fgets"); |
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257 } |
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258 else |
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259 print_usage ("fgets"); |
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260 |
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261 return retval; |
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262 } |
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263 |
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264 static octave_base_stream * |
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265 do_stream_open (const string& name, const string& mode, |
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266 const string& arch, int& fid) |
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267 { |
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268 octave_base_stream *retval = 0; |
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269 |
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270 fid = -1; |
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271 |
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272 int md = fopen_mode_to_ios_mode (mode); |
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273 |
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274 if (! error_state) |
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275 { |
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276 oct_mach_info::float_format flt_fmt = |
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277 oct_mach_info::string_to_float_format (arch); |
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278 |
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279 if (! error_state) |
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280 retval = new octave_fstream (name, md, flt_fmt); |
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281 } |
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282 |
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283 return retval; |
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284 } |
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285 |
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286 static octave_base_stream * |
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287 do_stream_open (const octave_value& tc_name, const octave_value& tc_mode, |
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288 const octave_value& tc_arch, const char *fcn, int& fid) |
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289 { |
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290 octave_base_stream *retval = 0; |
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291 |
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292 fid = -1; |
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293 |
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294 string name = tc_name.string_value (); |
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295 |
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296 if (! error_state) |
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297 { |
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298 string mode = tc_mode.string_value (); |
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299 |
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300 if (! error_state) |
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301 { |
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302 string arch = tc_arch.string_value (); |
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303 |
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304 if (! error_state) |
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305 retval = do_stream_open (name, mode, arch, fid); |
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306 else |
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307 ::error ("%s: architecture type must be a string", fcn); |
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308 } |
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309 else |
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310 ::error ("%s: file mode must be a string", fcn); |
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311 } |
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312 else |
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313 ::error ("%s: file name must be a string", fcn); |
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314 |
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315 return retval; |
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316 } |
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317 |
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1957
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318 DEFUN (fopen, args, , |
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319 "[FILENUM, ERRMSG] = fopen (FILENAME, MODE [, ARCH]): open a file\n\ |
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320 \n\ |
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321 FILENAME is a string specifying the name of the file.\n\ |
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322 \n\ |
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323 MODE is a string specifying whether the file should be opened for\n\ |
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324 reading, writing, or both. Valid values for MODE include:\n\ |
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325 \n\ |
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326 r : open text file for reading\n\ |
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327 w : open text file for writing; discard previous contents if any\n\ |
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328 a : append; open or create text file for writing at end of file\n\ |
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329 r+ : open text file for update (i.e., reading and writing)\n\ |
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330 w+ : create text file for update; discard previous contents if any\n\ |
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331 a+ : append; open or create text file for update, writing at end\n\ |
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332 \n\ |
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333 Update mode permits reading from and writing to the same file.\n\ |
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334 \n\ |
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335 ARCH is a string specifying the default data format for the file.\n\ |
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336 Valid values for ARCH are:\n\ |
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337 \n\ |
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338 native -- the format of the current machine (this is the default)\n\ |
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339 ieee-le -- IEEE big endian\n\ |
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340 ieee-be -- IEEE little endian\n\ |
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341 vaxd -- VAX D floating format\n\ |
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342 vaxg -- VAX G floating format\n\ |
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343 cray -- Cray floating format\n\ |
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344 \n\ |
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345 however, conversions are currently only supported for ieee-be, and\n\ |
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346 ieee-le formats.\n\ |
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347 \n\ |
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348 \n\ |
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349 FILENUM is a number that can be used to refer to the open file.\n\ |
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350 If fopen fails, FILENUM is set to -1 and ERRMSG contains a\n\ |
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351 system-dependent error message") |
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529
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352 { |
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2599
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353 octave_value_list retval; |
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354 |
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355 retval(0) = -1.0; |
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529
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356 |
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357 int nargin = args.length (); |
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358 |
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2095
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359 if (nargin == 1) |
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360 { |
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361 if (args(0).is_string () && args(0).string_value () == "all") |
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2432
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362 retval(0) = octave_stream_list::open_file_numbers (); |
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363 else |
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364 { |
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365 string_vector tmp = octave_stream_list::get_info (args(0)); |
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529
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366 |
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2095
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367 if (! error_state) |
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368 { |
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369 retval(2) = tmp(2); |
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370 retval(1) = tmp(1); |
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371 retval(0) = tmp(0); |
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372 } |
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2432
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373 } |
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1
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374 |
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2432
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375 return retval; |
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1
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376 } |
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377 |
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2095
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378 if (nargin > 0 && nargin < 4) |
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379 { |
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380 octave_value mode = (nargin == 2 || nargin == 3) |
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381 ? args(1) : octave_value ("r"); |
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382 |
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383 octave_value arch = (nargin == 3) |
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384 ? args(2) : octave_value ("native"); |
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385 |
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386 int fid = -1; |
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387 |
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388 octave_base_stream *os |
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389 = do_stream_open (args(0), mode, arch, "fopen", fid); |
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390 |
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391 if (os) |
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392 { |
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393 if (os->ok () && ! error_state) |
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394 { |
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395 retval(1) = ""; |
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396 retval(0) = (double) octave_stream_list::insert (os); |
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397 } |
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398 else |
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399 { |
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400 int errno = 0; |
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401 retval(1) = os->error (false, errno); |
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402 retval(0) = -1.0; |
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403 } |
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404 } |
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405 else |
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406 ::error ("fopen: internal error"); |
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407 } |
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408 else |
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409 print_usage ("fopen"); |
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1
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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 (freport, args, , |
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1181
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415 "freport (): list open files and their status") |
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416 { |
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2095
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417 octave_value_list retval; |
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1181
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418 |
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419 int nargin = args.length (); |
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420 |
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421 if (nargin > 0) |
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422 warning ("freport: ignoring extra arguments"); |
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423 |
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2095
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424 octave_stdout << octave_stream_list::list_open_files (); |
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1181
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425 |
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426 return retval; |
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427 } |
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428 |
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1957
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429 DEFUN (frewind, args, , |
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2116
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430 "frewind (FILENUM): set file position at beginning of file") |
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529
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431 { |
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2095
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432 double retval = -1.0; |
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1
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433 |
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506
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434 int nargin = args.length (); |
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435 |
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2095
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436 if (nargin == 1) |
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1086
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437 { |
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2095
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438 octave_stream *os = octave_stream_list::lookup (args(0)); |
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636
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439 |
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2095
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440 if (os) |
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441 retval = (double) os->rewind (); |
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1
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442 else |
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2095
|
443 gripe_invalid_file_id ("frewind"); |
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1
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444 } |
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445 else |
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2095
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446 print_usage ("frewind"); |
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1
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447 |
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448 return retval; |
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449 } |
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450 |
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1957
|
451 DEFUN (fseek, args, , |
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2116
|
452 "fseek (FILENUM, OFFSET [, ORIGIN])\n\ |
|
1181
|
453 \n\ |
|
2341
|
454 set file position for reading or writing.\n\ |
|
|
455 \n\ |
|
|
456 ORIGIN may be one of:\n\ |
|
|
457 \n\ |
|
|
458 SEEK_SET : offset is relative to the beginning of the file (default)\n\ |
|
|
459 SEEK_CUR : offset is relative to the current position\n\ |
|
|
460 SEEK_END : offset is relative to the end of the file") |
|
529
|
461 { |
|
2095
|
462 double retval = -1.0; |
|
529
|
463 |
|
|
464 int nargin = args.length (); |
|
|
465 |
|
2095
|
466 if (nargin == 2 || nargin == 3) |
|
|
467 { |
|
|
468 octave_stream *os = octave_stream_list::lookup (args(0)); |
|
1181
|
469 |
|
2095
|
470 if (os) |
|
|
471 { |
|
|
472 octave_value origin_arg = (nargin == 3) |
|
2341
|
473 ? args(2) : octave_value (-1.0); |
|
1
|
474 |
|
2095
|
475 retval = (double) os->seek (args(1), origin_arg); |
|
|
476 } |
|
|
477 else |
|
|
478 ::error ("fseek: invalid file id"); |
|
368
|
479 } |
|
2095
|
480 else |
|
|
481 print_usage ("fseek"); |
|
1
|
482 |
|
|
483 return retval; |
|
|
484 } |
|
|
485 |
|
1957
|
486 DEFUN (ftell, args, , |
|
2116
|
487 "POSITION = ftell (FILENUM): returns the current file position") |
|
1181
|
488 { |
|
2095
|
489 double retval = -1.0; |
|
1
|
490 |
|
506
|
491 int nargin = args.length (); |
|
|
492 |
|
2095
|
493 if (nargin == 1) |
|
1
|
494 { |
|
2095
|
495 octave_stream *os = octave_stream_list::lookup (args(0)); |
|
1
|
496 |
|
2095
|
497 if (os) |
|
|
498 retval = (double) os->tell (); |
|
|
499 else |
|
|
500 gripe_invalid_file_id ("ftell"); |
|
1
|
501 } |
|
|
502 else |
|
2095
|
503 print_usage ("ftell"); |
|
1
|
504 |
|
|
505 return retval; |
|
|
506 } |
|
|
507 |
|
1957
|
508 DEFUN (fprintf, args, , |
|
2116
|
509 "fprintf (FILENUM, FORMAT, ...)") |
|
1181
|
510 { |
|
2095
|
511 double retval = -1.0; |
|
1181
|
512 |
|
|
513 int nargin = args.length (); |
|
|
514 |
|
2095
|
515 if (nargin > 1) |
|
|
516 { |
|
|
517 octave_stream *os = octave_stream_list::lookup (args(0)); |
|
|
518 |
|
|
519 if (os) |
|
|
520 { |
|
|
521 if (args(1).is_string ()) |
|
|
522 { |
|
|
523 string fmt = args(1).string_value (); |
|
|
524 |
|
|
525 octave_value_list tmp_args; |
|
|
526 |
|
|
527 if (nargin > 2) |
|
|
528 { |
|
|
529 tmp_args.resize (nargin-2, octave_value ()); |
|
|
530 |
|
|
531 for (int i = 2; i < nargin; i++) |
|
|
532 tmp_args(i-2) = args(i); |
|
|
533 } |
|
|
534 |
|
|
535 retval = os->printf (fmt, tmp_args); |
|
|
536 } |
|
|
537 else |
|
|
538 ::error ("fprintf: format must be a string"); |
|
|
539 } |
|
|
540 else |
|
|
541 gripe_invalid_file_id ("fprintf"); |
|
|
542 } |
|
|
543 else |
|
1181
|
544 print_usage ("fprintf"); |
|
|
545 |
|
|
546 return retval; |
|
|
547 } |
|
|
548 |
|
2095
|
549 DEFUN (fputs, args, , |
|
2116
|
550 "fputs (FILENUM, STRING)") |
|
1181
|
551 { |
|
2095
|
552 double retval = -1.0; |
|
1181
|
553 |
|
|
554 int nargin = args.length (); |
|
|
555 |
|
2095
|
556 if (nargin == 2) |
|
|
557 { |
|
|
558 octave_stream *os = octave_stream_list::lookup (args(0)); |
|
1181
|
559 |
|
2095
|
560 if (os) |
|
|
561 retval = os->puts (args(1)); |
|
|
562 else |
|
|
563 gripe_invalid_file_id ("fputs"); |
|
|
564 } |
|
1181
|
565 else |
|
2095
|
566 print_usage ("fputs"); |
|
1181
|
567 |
|
|
568 return retval; |
|
|
569 } |
|
|
570 |
|
2095
|
571 DEFUN (sprintf, args, , |
|
|
572 "[s, errmsg, status] = sprintf (FORMAT, ...)") |
|
1
|
573 { |
|
2095
|
574 octave_value_list retval; |
|
1
|
575 |
|
2095
|
576 int nargin = args.length (); |
|
1
|
577 |
|
2095
|
578 if (nargin > 0) |
|
1
|
579 { |
|
2116
|
580 retval(2) = -1.0; |
|
|
581 retval(1) = "unknown error"; |
|
|
582 retval(0) = ""; |
|
|
583 |
|
2095
|
584 octave_ostrstream ostr; |
|
1
|
585 |
|
2148
|
586 octave_stream os (&ostr, true); |
|
628
|
587 |
|
2095
|
588 if (os) |
|
|
589 { |
|
|
590 if (args(0).is_string ()) |
|
|
591 { |
|
|
592 string fmt = args(0).string_value (); |
|
628
|
593 |
|
2095
|
594 octave_value_list tmp_args; |
|
1
|
595 |
|
2095
|
596 if (nargin > 1) |
|
|
597 { |
|
|
598 tmp_args.resize (nargin-1, octave_value ()); |
|
1
|
599 |
|
2095
|
600 for (int i = 1; i < nargin; i++) |
|
|
601 tmp_args(i-1) = args(i); |
|
|
602 } |
|
628
|
603 |
|
2095
|
604 retval(2) = os.printf (fmt, tmp_args); |
|
|
605 retval(1) = os.error (); |
|
|
606 char *tmp = ostr.str (); |
|
|
607 retval(0) = tmp; |
|
|
608 delete [] tmp; |
|
|
609 } |
|
|
610 else |
|
|
611 ::error ("sprintf: format must be a string"); |
|
|
612 } |
|
|
613 else |
|
|
614 ::error ("sprintf: unable to create output buffer"); |
|
1
|
615 } |
|
|
616 else |
|
2095
|
617 print_usage ("sprintf"); |
|
1
|
618 |
|
|
619 return retval; |
|
|
620 } |
|
|
621 |
|
2095
|
622 DEFUN (fscanf, args, , |
|
2122
|
623 "[A, COUNT] = fscanf (FILENUM, FORMAT [, SIZE])\n\ |
|
|
624 \n\ |
|
|
625 Read from FILENUM according to FORMAT, returning the result in the\n\ |
|
|
626 matrix A. SIZE is optional. If present, it can be one of\n\ |
|
|
627 \n\ |
|
|
628 Inf : read as much as possible, returning a column vector\n\ |
|
|
629 (unless doing all character conversions, in which case a\n\ |
|
|
630 string is returned)\n\ |
|
|
631 NR : read as much as possible, returning a matrix with NR rows\n\ |
|
|
632 [NR, NC] : read up to NR x NC elements, returning a matrix with NR rows\n\ |
|
|
633 [NR, Inf] : same as NR\n\ |
|
|
634 \n\ |
|
|
635 If it is omitted, a value of Inf is assumed.\n\ |
|
|
636 \n\ |
|
2215
|
637 The number of items successfully read is returned in COUNT.\n\ |
|
|
638 \n\ |
|
|
639 [A, B, ...] = fscanf (FILENUM, FORMAT, \"C\")\n\ |
|
|
640 \n\ |
|
|
641 Read from FILENUM according to FORMAT, with each conversion specifier\n\ |
|
|
642 in FORMAT corresponding to a single scalar return value. This form is\n\ |
|
|
643 more `C-like', and also compatible with previous versions of Octave") |
|
1181
|
644 { |
|
2095
|
645 octave_value_list retval; |
|
1181
|
646 |
|
|
647 int nargin = args.length (); |
|
|
648 |
|
2215
|
649 if (nargin == 3 && args(2).is_string ()) |
|
2095
|
650 { |
|
|
651 octave_stream *os = octave_stream_list::lookup (args(0)); |
|
1181
|
652 |
|
2095
|
653 if (os) |
|
|
654 { |
|
|
655 if (args(1).is_string ()) |
|
|
656 { |
|
|
657 string fmt = args(1).string_value (); |
|
1181
|
658 |
|
2215
|
659 retval = os->oscanf (fmt); |
|
2095
|
660 } |
|
|
661 else |
|
|
662 ::error ("fscanf: format must be a string"); |
|
|
663 } |
|
|
664 else |
|
|
665 gripe_invalid_file_id ("fscanf"); |
|
|
666 } |
|
1181
|
667 else |
|
2215
|
668 { |
|
|
669 retval (1) = 0.0; |
|
|
670 retval (0) = Matrix (); |
|
|
671 |
|
|
672 if (nargin == 2 || nargin == 3) |
|
|
673 { |
|
|
674 octave_stream *os = octave_stream_list::lookup (args(0)); |
|
|
675 |
|
|
676 if (os) |
|
|
677 { |
|
|
678 if (args(1).is_string ()) |
|
|
679 { |
|
|
680 string fmt = args(1).string_value (); |
|
|
681 |
|
|
682 int count = 0; |
|
|
683 |
|
|
684 Matrix size = (nargin == 3) |
|
|
685 ? args(2).matrix_value () : Matrix (1, 1, octave_Inf); |
|
|
686 |
|
|
687 if (! error_state) |
|
|
688 { |
|
|
689 octave_value tmp = os->scanf (fmt, size, count); |
|
|
690 |
|
|
691 retval(1) = (double) count; |
|
|
692 retval(0) = tmp; |
|
|
693 } |
|
|
694 } |
|
|
695 else |
|
|
696 ::error ("fscanf: format must be a string"); |
|
|
697 } |
|
|
698 else |
|
|
699 gripe_invalid_file_id ("fscanf"); |
|
|
700 } |
|
|
701 else |
|
|
702 print_usage ("fscanf"); |
|
|
703 } |
|
1181
|
704 |
|
|
705 return retval; |
|
|
706 } |
|
|
707 |
|
2095
|
708 DEFUN (sscanf, args, , |
|
2122
|
709 "[A, COUNT, ERRMSG, INDEX] = sscanf (STRING, FORMAT, SIZE)\n\ |
|
|
710 \n\ |
|
2215
|
711 Read from STRING according to FORMAT, returning the result in the\n\ |
|
2122
|
712 matrix A. SIZE is optional. If present, it can be one of\n\ |
|
|
713 \n\ |
|
|
714 Inf : read as much as possible, returning a column vector\n\ |
|
|
715 (unless doing all character conversions, in which case a\n\ |
|
|
716 string is returned)\n\ |
|
|
717 NR : read as much as possible, returning a matrix with NR rows\n\ |
|
|
718 [NR, NC] : read up to NR x NC elements, returning a matrix with NR rows\n\ |
|
|
719 [NR, Inf] : same as NR\n\ |
|
|
720 \n\ |
|
|
721 If it is omitted, a value of Inf is assumed.\n\ |
|
|
722 \n\ |
|
|
723 The number of items successfully read is returned in COUNT. If an\n\ |
|
|
724 error occurs, ERRMSG contains the text of the corresponding error\n\ |
|
|
725 message. INDEX contains the index of the next character to be read\n\ |
|
2215
|
726 from STRING\n\ |
|
|
727 \n\ |
|
|
728 [A, B, ...] = sscanf (STRING, FORMAT, \"C\")\n\ |
|
|
729 \n\ |
|
|
730 Read from STRING according to FORMAT, with each conversion specifier\n\ |
|
|
731 in FORMAT corresponding to a single scalar return value. This form is\n\ |
|
|
732 more `C-like', and also compatible with previous versions of Octave") |
|
444
|
733 { |
|
2095
|
734 octave_value_list retval; |
|
444
|
735 |
|
506
|
736 int nargin = args.length (); |
|
|
737 |
|
2215
|
738 if (nargin == 3 && args(2).is_string ()) |
|
2095
|
739 { |
|
|
740 if (args(0).is_string ()) |
|
|
741 { |
|
|
742 string data = args(0).string_value (); |
|
444
|
743 |
|
2095
|
744 octave_istrstream istr (data); |
|
1358
|
745 |
|
2148
|
746 octave_stream os (&istr, true); |
|
636
|
747 |
|
2095
|
748 if (os) |
|
|
749 { |
|
|
750 if (args(1).is_string ()) |
|
|
751 { |
|
|
752 string fmt = args(1).string_value (); |
|
444
|
753 |
|
2215
|
754 retval = os.oscanf (fmt); |
|
2095
|
755 } |
|
|
756 else |
|
|
757 ::error ("sscanf: format must be a string"); |
|
|
758 } |
|
|
759 else |
|
|
760 ::error ("sscanf: unable to create temporary input buffer"); |
|
444
|
761 } |
|
636
|
762 else |
|
2095
|
763 ::error ("sscanf: first argument must be a string"); |
|
444
|
764 } |
|
|
765 else |
|
2215
|
766 { |
|
|
767 if (nargin == 2 || nargin == 3) |
|
|
768 { |
|
|
769 retval(3) = -1.0; |
|
|
770 retval(2) = "unknown error"; |
|
|
771 retval(1) = 0.0; |
|
|
772 retval(0) = Matrix (); |
|
|
773 |
|
|
774 if (args(0).is_string ()) |
|
|
775 { |
|
|
776 string data = args(0).string_value (); |
|
|
777 |
|
|
778 octave_istrstream istr (data); |
|
|
779 |
|
|
780 octave_stream os (&istr, true); |
|
|
781 |
|
|
782 if (os) |
|
|
783 { |
|
|
784 if (args(1).is_string ()) |
|
|
785 { |
|
|
786 string fmt = args(1).string_value (); |
|
|
787 |
|
|
788 int count = 0; |
|
|
789 |
|
|
790 Matrix size = (nargin == 3) |
|
|
791 ? args(2).matrix_value () : Matrix (1, 1, octave_Inf); |
|
|
792 |
|
|
793 octave_value tmp = os.scanf (fmt, size, count); |
|
|
794 |
|
|
795 // XXX FIXME XXX -- is this the right thing to do? |
|
|
796 // Extract error message first, because getting |
|
|
797 // position will clear it. |
|
|
798 string errmsg = os.error (); |
|
|
799 |
|
|
800 retval(3) = (double) (os.tell () + 1); |
|
|
801 retval(2) = errmsg; |
|
|
802 retval(1) = (double) count; |
|
|
803 retval(0) = tmp; |
|
|
804 } |
|
|
805 else |
|
|
806 ::error ("sscanf: format must be a string"); |
|
|
807 } |
|
|
808 else |
|
|
809 ::error ("sscanf: unable to create temporary input buffer"); |
|
|
810 } |
|
|
811 else |
|
|
812 ::error ("sscanf: first argument must be a string"); |
|
|
813 } |
|
|
814 else |
|
|
815 print_usage ("sscanf"); |
|
|
816 } |
|
444
|
817 |
|
|
818 return retval; |
|
|
819 } |
|
|
820 |
|
2215
|
821 DEFUN (scanf, args, nargout, |
|
|
822 "scanf (FORMAT) is equivalent to fscanf (stdin, FORMAT)") |
|
|
823 { |
|
|
824 int nargin = args.length (); |
|
|
825 |
|
|
826 octave_value_list tmp_args (nargin+1, octave_value ()); |
|
|
827 |
|
|
828 tmp_args (0) = 0.0; |
|
|
829 for (int i = 0; i < nargin; i++) |
|
|
830 tmp_args (i+1) = args (i); |
|
|
831 |
|
|
832 return Ffscanf (tmp_args, nargout); |
|
|
833 } |
|
|
834 |
|
2116
|
835 static octave_value |
|
|
836 do_fread (octave_stream& os, const octave_value& size_arg, |
|
|
837 const octave_value& prec_arg, const octave_value& skip_arg, |
|
|
838 const octave_value& arch_arg, int& count) |
|
|
839 { |
|
|
840 octave_value retval; |
|
|
841 |
|
|
842 count = -1; |
|
|
843 |
|
|
844 Matrix size = size_arg.matrix_value (); |
|
|
845 |
|
|
846 if (! error_state) |
|
|
847 { |
|
|
848 string prec = prec_arg.string_value (); |
|
|
849 |
|
|
850 if (! error_state) |
|
|
851 { |
|
2318
|
852 oct_data_conv::data_type dt |
|
|
853 = oct_data_conv::string_to_data_type (prec); |
|
2116
|
854 |
|
|
855 if (! error_state) |
|
|
856 { |
|
|
857 double dskip = skip_arg.double_value (); |
|
|
858 |
|
|
859 if (! error_state) |
|
|
860 { |
|
|
861 if (D_NINT (dskip) == dskip) |
|
|
862 { |
|
|
863 int skip = NINT (dskip); |
|
|
864 |
|
|
865 string arch = arch_arg.string_value (); |
|
|
866 |
|
|
867 if (! error_state) |
|
|
868 { |
|
2318
|
869 oct_mach_info::float_format flt_fmt |
|
|
870 = oct_mach_info::string_to_float_format (arch); |
|
2116
|
871 |
|
|
872 if (! error_state) |
|
2318
|
873 retval = os.read (size, dt, skip, flt_fmt, count); |
|
2116
|
874 } |
|
|
875 else |
|
|
876 ::error ("fread: architecture type must be a string"); |
|
|
877 } |
|
|
878 else |
|
|
879 ::error ("fread: skip must be an integer"); |
|
|
880 } |
|
|
881 else |
|
|
882 ::error ("fread: invalid skip specified"); |
|
|
883 } |
|
|
884 else |
|
|
885 ::error ("fread: invalid data type specified"); |
|
|
886 } |
|
|
887 else |
|
|
888 ::error ("fread: precision must be a string"); |
|
|
889 } |
|
|
890 else |
|
|
891 ::error ("fread: invalid size specified"); |
|
|
892 |
|
|
893 return retval; |
|
|
894 } |
|
|
895 |
|
|
896 DEFUN (fread, args, , |
|
|
897 "[DATA, COUNT] = fread (FILENUM [, SIZE] [, PRECISION] [, SKIP] [, ARCH])\n\ |
|
529
|
898 \n\ |
|
2318
|
899 Reads data in binary form of type PRECISION from a file.\n\ |
|
|
900 \n\ |
|
|
901 FILENUM : file number from fopen\n\ |
|
529
|
902 \n\ |
|
2318
|
903 SIZE : size specification for the data matrix\n\ |
|
|
904 \n\ |
|
|
905 PRECISION : string specifying type of data to read, valid types are\n\ |
|
529
|
906 \n\ |
|
2318
|
907 char, char*1, integer*1, int8 -- character\n\ |
|
|
908 schar, signed char -- signed character\n\ |
|
|
909 uchar, unsigned char -- unsigned character (default)\n\ |
|
|
910 short -- short integer\n\ |
|
|
911 ushort, unsigned short -- unsigned short integer\n\ |
|
|
912 int -- integer\n\ |
|
|
913 uint, unsigned int -- unsigned integer\n\ |
|
|
914 long -- long integer\n\ |
|
|
915 ulong, unsigned long -- unsigned long integer\n\ |
|
|
916 float, float32, real*4 -- single precision float\n\ |
|
|
917 double, float64, real*8 -- double precision float\n\ |
|
|
918 int16, integer*2 -- two byte integer\n\ |
|
|
919 int32, integer*4 -- four byte integer\n\ |
|
|
920 \n\ |
|
|
921 SKIP : number of bytes to skip before each element is read\n\ |
|
|
922 (default is 0)\n\ |
|
529
|
923 \n\ |
|
2318
|
924 ARCH : string specifying the data format for the file. Valid |
|
|
925 values are\n\ |
|
|
926 \n\ |
|
|
927 native -- the format of the current machine (default)\n\ |
|
|
928 ieee-le -- IEEE big endian\n\ |
|
|
929 ieee-be -- IEEE little endian\n\ |
|
|
930 vaxd -- VAX D floating format\n\ |
|
|
931 vaxg -- VAX G floating format\n\ |
|
2324
|
932 cray -- Cray floating format\n\ |
|
2318
|
933 \n\ |
|
2324
|
934 however, conversions are currently only supported for\n\ |
|
|
935 ieee-be, and ieee-le formats.\n\ |
|
2318
|
936 \n\ |
|
|
937 \n\ |
|
|
938 DATA : matrix in which the data is stored\n\ |
|
|
939 \n\ |
|
|
940 COUNT : number of elements read") |
|
529
|
941 { |
|
2095
|
942 octave_value_list retval; |
|
2116
|
943 |
|
|
944 int nargin = args.length (); |
|
|
945 |
|
2318
|
946 if (nargin > 0 && nargin < 6) |
|
2116
|
947 { |
|
|
948 retval(1) = -1.0; |
|
|
949 retval(0) = Matrix (); |
|
|
950 |
|
|
951 octave_stream *os = octave_stream_list::lookup (args(0)); |
|
|
952 |
|
|
953 if (os) |
|
|
954 { |
|
|
955 octave_value size = (nargin > 1) |
|
|
956 ? args(1) : octave_value (octave_Inf); |
|
|
957 |
|
|
958 octave_value prec = (nargin > 2) |
|
|
959 ? args(2) : octave_value ("uchar"); |
|
|
960 |
|
|
961 octave_value skip = (nargin > 3) |
|
|
962 ? args(3) : octave_value (0.0); |
|
|
963 |
|
|
964 octave_value arch = (nargin > 4) |
|
2318
|
965 ? args(4) : octave_value ("unknown"); |
|
2116
|
966 |
|
|
967 int count = -1; |
|
|
968 |
|
|
969 octave_value tmp = do_fread (*os, size, prec, skip, arch, count); |
|
|
970 |
|
|
971 retval(1) = (double) count; |
|
|
972 retval(0) = tmp; |
|
|
973 } |
|
|
974 else |
|
|
975 gripe_invalid_file_id ("fread"); |
|
|
976 } |
|
|
977 else |
|
|
978 print_usage ("fread"); |
|
|
979 |
|
529
|
980 return retval; |
|
|
981 } |
|
|
982 |
|
2116
|
983 static int |
|
|
984 do_fwrite (octave_stream& os, const octave_value& data, |
|
|
985 const octave_value& prec_arg, const octave_value& skip_arg, |
|
|
986 const octave_value& arch_arg) |
|
|
987 { |
|
|
988 int retval = -1; |
|
|
989 |
|
|
990 string prec = prec_arg.string_value (); |
|
|
991 |
|
|
992 if (! error_state) |
|
|
993 { |
|
2318
|
994 oct_data_conv::data_type dt |
|
|
995 = oct_data_conv::string_to_data_type (prec); |
|
2116
|
996 |
|
|
997 if (! error_state) |
|
|
998 { |
|
|
999 double dskip = skip_arg.double_value (); |
|
|
1000 |
|
|
1001 if (! error_state) |
|
|
1002 { |
|
|
1003 if (D_NINT (dskip) == dskip) |
|
|
1004 { |
|
|
1005 int skip = NINT (dskip); |
|
|
1006 |
|
|
1007 string arch = arch_arg.string_value (); |
|
|
1008 |
|
|
1009 if (! error_state) |
|
|
1010 { |
|
2318
|
1011 oct_mach_info::float_format flt_fmt |
|
|
1012 = oct_mach_info::string_to_float_format (arch); |
|
2116
|
1013 |
|
|
1014 if (! error_state) |
|
2318
|
1015 retval = os.write (data, dt, skip, flt_fmt); |
|
2116
|
1016 } |
|
|
1017 else |
|
|
1018 ::error ("fwrite: architecture type must be a string"); |
|
|
1019 } |
|
|
1020 else |
|
|
1021 ::error ("fwrite: skip must be an integer"); |
|
|
1022 } |
|
|
1023 else |
|
|
1024 ::error ("fwrite: invalid skip specified"); |
|
|
1025 } |
|
|
1026 } |
|
|
1027 else |
|
|
1028 ::error ("fwrite: precision must be a string"); |
|
|
1029 |
|
|
1030 return retval; |
|
|
1031 } |
|
|
1032 |
|
|
1033 DEFUN (fwrite, args, , |
|
|
1034 "COUNT = fwrite (FILENUM, DATA [, PRECISION] [, SKIP] [, ARCH])\n\ |
|
1181
|
1035 \n\ |
|
2318
|
1036 Writes data to a file in binary form of size PRECISION\n\ |
|
|
1037 \n\ |
|
|
1038 FILENUM : file number from fopen\n\ |
|
|
1039 \n\ |
|
|
1040 DATA : matrix of elements to be written\n\ |
|
|
1041 \n\ |
|
|
1042 PRECISION : string specifying type of data to read, valid types are\n\ |
|
1181
|
1043 \n\ |
|
2318
|
1044 char, char*1, integer*1, int8 -- character\n\ |
|
|
1045 schar, signed char -- signed character\n\ |
|
|
1046 uchar, unsigned char -- unsigned character (default)\n\ |
|
|
1047 short -- short integer\n\ |
|
|
1048 ushort, unsigned short -- unsigned short integer\n\ |
|
|
1049 int -- integer\n\ |
|
|
1050 uint, unsigned int -- unsigned integer\n\ |
|
|
1051 long -- long integer\n\ |
|
|
1052 ulong, unsigned long -- unsigned long integer\n\ |
|
|
1053 float, float32, real*4 -- single precision float\n\ |
|
|
1054 double, float64, real*8 -- double precision float\n\ |
|
|
1055 int16, integer*2 -- two byte integer\n\ |
|
|
1056 int32, integer*4 -- four byte integer\n\ |
|
1181
|
1057 \n\ |
|
2318
|
1058 SKIP : number of bytes to skip before each element is read\n\ |
|
|
1059 (the default is 0)\n\ |
|
|
1060 \n\ |
|
|
1061 ARCH : string specifying the data format for the file. Valid |
|
|
1062 values are\n\ |
|
1181
|
1063 \n\ |
|
2318
|
1064 native -- the format of the current machine (default)\n\ |
|
|
1065 ieee-le -- IEEE big endian\n\ |
|
|
1066 ieee-be -- IEEE little endian\n\ |
|
|
1067 vaxd -- VAX D floating format\n\ |
|
|
1068 vaxg -- VAX G floating format\n\ |
|
|
1069 cray -- Cray floating format\n |
|
|
1070 \n\ |
|
|
1071 however, conversions are currently only supported for ieee-be, and\n\ |
|
|
1072 ieee-le formats.\n\ |
|
|
1073 \n\ |
|
|
1074 \n\ |
|
|
1075 COUNT : number of elements written") |
|
1181
|
1076 { |
|
2116
|
1077 octave_value retval = -1.0; |
|
|
1078 |
|
|
1079 int nargin = args.length (); |
|
|
1080 |
|
|
1081 if (nargin > 1 && nargin < 6) |
|
|
1082 { |
|
|
1083 octave_stream *os = octave_stream_list::lookup (args(0)); |
|
|
1084 |
|
|
1085 if (os) |
|
|
1086 { |
|
|
1087 octave_value data = args(1); |
|
2318
|
1088 |
|
|
1089 octave_value prec = (nargin > 2) |
|
|
1090 ? args(2) : octave_value ("uchar"); |
|
|
1091 |
|
|
1092 octave_value skip = (nargin > 3) |
|
|
1093 ? args(3) : octave_value (0.0); |
|
|
1094 |
|
|
1095 octave_value arch = (nargin > 4) |
|
|
1096 ? args(4) : octave_value ("unknown"); |
|
2116
|
1097 |
|
|
1098 retval = do_fwrite (*os, data, prec, skip, arch); |
|
|
1099 } |
|
|
1100 else |
|
|
1101 gripe_invalid_file_id ("fwrite"); |
|
|
1102 } |
|
|
1103 else |
|
|
1104 print_usage ("fwrite"); |
|
|
1105 |
|
1181
|
1106 return retval; |
|
|
1107 } |
|
|
1108 |
|
1957
|
1109 DEFUN (feof, args, , |
|
2116
|
1110 "ERROR = feof (FILENUM)\n\ |
|
529
|
1111 \n\ |
|
|
1112 Returns a non zero value for an end of file condition for the\n\ |
|
2116
|
1113 file specified by FILENUM from fopen") |
|
529
|
1114 { |
|
2095
|
1115 double retval = -1.0; |
|
529
|
1116 |
|
|
1117 int nargin = args.length (); |
|
|
1118 |
|
2095
|
1119 if (nargin == 1) |
|
|
1120 { |
|
|
1121 octave_stream *os = octave_stream_list::lookup (args(0)); |
|
444
|
1122 |
|
2095
|
1123 if (os) |
|
|
1124 retval = os->eof () ? 1.0 : 0.0; |
|
|
1125 else |
|
|
1126 gripe_invalid_file_id ("feof"); |
|
|
1127 } |
|
529
|
1128 else |
|
2095
|
1129 print_usage ("feof"); |
|
444
|
1130 |
|
|
1131 return retval; |
|
|
1132 } |
|
|
1133 |
|
2095
|
1134 DEFUN (ferror, args, , |
|
2116
|
1135 "ERROR = ferror (FILENUM, [\"clear\"])\n\ |
|
2095
|
1136 \n\ |
|
|
1137 Returns a non zero value for an error condition on the\n\ |
|
2116
|
1138 file specified by FILENUM from fopen") |
|
1230
|
1139 { |
|
2095
|
1140 octave_value_list retval; |
|
1230
|
1141 |
|
2095
|
1142 int nargin = args.length (); |
|
1230
|
1143 |
|
2095
|
1144 if (nargin == 1 || nargin == 2) |
|
|
1145 { |
|
|
1146 octave_stream *os = octave_stream_list::lookup (args(0)); |
|
1230
|
1147 |
|
2095
|
1148 if (os) |
|
|
1149 { |
|
|
1150 bool clear = false; |
|
1230
|
1151 |
|
2095
|
1152 if (nargin == 2) |
|
|
1153 { |
|
|
1154 string opt = args(1).string_value (); |
|
|
1155 |
|
|
1156 if (! error_state) |
|
|
1157 clear = (opt == "clear"); |
|
|
1158 else |
|
|
1159 return retval; |
|
|
1160 } |
|
1755
|
1161 |
|
2095
|
1162 int error_number = 0; |
|
|
1163 |
|
|
1164 string error_message = os->error (clear, error_number); |
|
1230
|
1165 |
|
2095
|
1166 retval(1) = (double) error_number; |
|
|
1167 retval(0) = error_message; |
|
|
1168 } |
|
|
1169 else |
|
|
1170 gripe_invalid_file_id ("ferror"); |
|
1230
|
1171 } |
|
2095
|
1172 else |
|
|
1173 print_usage ("ferror"); |
|
1230
|
1174 |
|
|
1175 return retval; |
|
|
1176 } |
|
|
1177 |
|
1957
|
1178 DEFUN (popen, args, , |
|
1230
|
1179 "FILENUM = popen (FILENAME, MODE)\n\ |
|
|
1180 \n\ |
|
|
1181 start a process and create a pipe. Valid values for mode are:\n\ |
|
|
1182 \n\ |
|
|
1183 \"r\" : connect stdout of process to pipe\n\ |
|
|
1184 \"w\" : connect stdin of process to pipe") |
|
|
1185 { |
|
2095
|
1186 double retval = -1.0; |
|
1230
|
1187 |
|
|
1188 int nargin = args.length (); |
|
|
1189 |
|
2095
|
1190 if (nargin == 2) |
|
|
1191 { |
|
|
1192 string name = args(0).string_value (); |
|
1230
|
1193 |
|
2095
|
1194 if (! error_state) |
|
|
1195 { |
|
|
1196 string mode = args(1).string_value (); |
|
1230
|
1197 |
|
2095
|
1198 if (! error_state) |
|
|
1199 { |
|
|
1200 if (mode == "r") |
|
|
1201 { |
|
|
1202 octave_iprocstream *ips = new octave_iprocstream (name); |
|
1230
|
1203 |
|
2095
|
1204 retval = octave_stream_list::insert (ips); |
|
|
1205 } |
|
|
1206 else if (mode == "w") |
|
|
1207 { |
|
|
1208 octave_oprocstream *ops = new octave_oprocstream (name); |
|
1230
|
1209 |
|
2095
|
1210 retval = octave_stream_list::insert (ops); |
|
|
1211 } |
|
|
1212 else |
|
|
1213 ::error ("popen: invalid mode specified"); |
|
|
1214 } |
|
|
1215 else |
|
|
1216 ::error ("popen: mode must be a string"); |
|
|
1217 } |
|
|
1218 else |
|
|
1219 ::error ("popen: name must be a string"); |
|
|
1220 } |
|
1230
|
1221 else |
|
2095
|
1222 print_usage ("popen"); |
|
1230
|
1223 |
|
|
1224 return retval; |
|
|
1225 } |
|
|
1226 |
|
1957
|
1227 DEFUN (pclose, args, , |
|
2116
|
1228 "pclose (FILENUM)\n\ |
|
1230
|
1229 \n\ |
|
|
1230 Close a pipe and terminate the associated process") |
|
|
1231 { |
|
2095
|
1232 double retval = -1.0; |
|
1230
|
1233 |
|
|
1234 int nargin = args.length (); |
|
|
1235 |
|
2095
|
1236 if (nargin == 1) |
|
1230
|
1237 { |
|
2095
|
1238 retval = (double) octave_stream_list::remove (args(0)); |
|
1230
|
1239 |
|
2095
|
1240 if (retval < 0) |
|
|
1241 gripe_invalid_file_id ("pclose"); |
|
1377
|
1242 } |
|
|
1243 else |
|
2095
|
1244 print_usage ("pclose"); |
|
1379
|
1245 |
|
|
1246 return retval; |
|
|
1247 } |
|
|
1248 |
|
2458
|
1249 DEFUN (tmpnam, args, , |
|
|
1250 "tmpnam ()\n\ |
|
2237
|
1251 Return unique temporary file name.") |
|
1802
|
1252 { |
|
2095
|
1253 octave_value retval; |
|
1802
|
1254 |
|
|
1255 if (args.length () == 0) |
|
|
1256 retval = oct_tempnam (); |
|
|
1257 else |
|
2458
|
1258 print_usage ("tmpnam"); |
|
1802
|
1259 |
|
|
1260 return retval; |
|
|
1261 } |
|
|
1262 |
|
2458
|
1263 DEFALIAS (octave_tmp_file_name, tmpnam); |
|
|
1264 |
|
1400
|
1265 static int |
|
|
1266 convert (int x, int ibase, int obase) |
|
|
1267 { |
|
|
1268 int retval = 0; |
|
|
1269 |
|
|
1270 int tmp = x % obase; |
|
|
1271 |
|
|
1272 if (tmp > ibase - 1) |
|
2095
|
1273 ::error ("umask: invalid digit"); |
|
1400
|
1274 else |
|
|
1275 { |
|
|
1276 retval = tmp; |
|
|
1277 int mult = ibase; |
|
|
1278 while ((x = (x - tmp) / obase)) |
|
|
1279 { |
|
|
1280 tmp = x % obase; |
|
|
1281 if (tmp > ibase - 1) |
|
|
1282 { |
|
2095
|
1283 ::error ("umask: invalid digit"); |
|
1400
|
1284 break; |
|
|
1285 } |
|
|
1286 retval += mult * tmp; |
|
|
1287 mult *= ibase; |
|
|
1288 } |
|
|
1289 } |
|
|
1290 |
|
|
1291 return retval; |
|
|
1292 } |
|
|
1293 |
|
1957
|
1294 DEFUN (umask, args, , |
|
1400
|
1295 "umask (MASK)\n\ |
|
|
1296 \n\ |
|
|
1297 Change the file permission mask for file creation for the current |
|
|
1298 process. MASK is an integer, interpreted as an octal number. If |
|
|
1299 successful, returns the previous value of the mask (as an integer to |
|
|
1300 be interpreted as an octal number); otherwise an error message is |
|
|
1301 printed.") |
|
|
1302 { |
|
2095
|
1303 octave_value_list retval; |
|
1400
|
1304 |
|
|
1305 int status = 0; |
|
|
1306 |
|
|
1307 if (args.length () == 1) |
|
|
1308 { |
|
|
1309 double dmask = args(0).double_value (); |
|
|
1310 |
|
|
1311 if (error_state) |
|
|
1312 { |
|
|
1313 status = -1; |
|
2095
|
1314 ::error ("umask: expecting integer argument"); |
|
1400
|
1315 } |
|
|
1316 else |
|
|
1317 { |
|
|
1318 int mask = NINT (dmask); |
|
|
1319 |
|
|
1320 if ((double) mask != dmask || mask < 0) |
|
|
1321 { |
|
|
1322 status = -1; |
|
2095
|
1323 ::error ("umask: MASK must be a positive integer value"); |
|
1400
|
1324 } |
|
|
1325 else |
|
|
1326 { |
|
|
1327 int oct_mask = convert (mask, 8, 10); |
|
|
1328 |
|
|
1329 if (! error_state) |
|
1773
|
1330 status = convert (oct_umask (oct_mask), 10, 8); |
|
1400
|
1331 } |
|
|
1332 } |
|
|
1333 } |
|
|
1334 else |
|
|
1335 print_usage ("umask"); |
|
|
1336 |
|
|
1337 if (status >= 0) |
|
|
1338 retval(0) = (double) status; |
|
|
1339 |
|
|
1340 return retval; |
|
|
1341 } |
|
|
1342 |
|
2189
|
1343 void |
|
|
1344 symbols_of_file_io (void) |
|
|
1345 { |
|
2341
|
1346 // NOTE: the values of SEEK_SET, SEEK_CUR, and SEEK_END have to be |
|
|
1347 // this way for Matlab compatibility. |
|
|
1348 |
|
|
1349 DEFCONST (SEEK_SET, -1.0, 0, 0, |
|
2189
|
1350 "used with fseek to position file relative to the beginning"); |
|
|
1351 |
|
2341
|
1352 DEFCONST (SEEK_CUR, 0.0, 0, 0, |
|
2189
|
1353 "used with fseek to position file relative to the current position"); |
|
|
1354 |
|
2341
|
1355 DEFCONST (SEEK_END, 1.0, 0, 0, |
|
2189
|
1356 "used with fseek to position file relative to the end"); |
|
|
1357 |
|
|
1358 DEFCONSTX ("stdin", SBV_stdin, 0.0, 0, 0, |
|
|
1359 "file number of the standard input stream"); |
|
|
1360 |
|
|
1361 DEFCONSTX ("stdout", SBV_stdout, 1.0, 0, 0, |
|
|
1362 "file number of the standard output stream"); |
|
|
1363 |
|
|
1364 DEFCONSTX ("stderr", SBV_stderr, 2.0, 0, 0, |
|
|
1365 "file number of the standard error stream"); |
|
|
1366 } |
|
|
1367 |
|
444
|
1368 /* |
|
1
|
1369 ;;; Local Variables: *** |
|
|
1370 ;;; mode: C++ *** |
|
|
1371 ;;; End: *** |
|
|
1372 */ |
