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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 #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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1
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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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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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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 // XXX FIXME XXX -- any way to avoid special case for stdout? |
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172 |
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173 int fid = octave_stream_list::get_file_number (args (0)); |
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174 |
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175 if (fid == 1) |
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176 { |
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177 flush_octave_stdout (); |
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178 |
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179 retval = 0.0; |
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180 } |
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181 else |
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182 { |
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183 octave_stream *os = octave_stream_list::lookup (fid); |
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184 |
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185 if (os) |
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186 retval = (double) os->flush (); |
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187 else |
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188 gripe_invalid_file_id ("fflush"); |
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189 } |
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190 } |
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191 else |
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192 print_usage ("fflush"); |
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193 |
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194 return retval; |
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195 } |
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196 |
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197 DEFUN (fgetl, args, , |
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198 "[STRING, LENGTH] = fgetl (FILENUM [, LENGTH])\n\ |
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199 \n\ |
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200 read a string from a file") |
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201 { |
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202 octave_value_list retval; |
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203 |
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204 retval(1) = 0.0; |
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205 retval(0) = -1.0; |
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206 |
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207 int nargin = args.length (); |
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208 |
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209 if (nargin == 1 || nargin == 2) |
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210 { |
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211 octave_stream *os = octave_stream_list::lookup (args(0)); |
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212 |
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213 if (os) |
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214 { |
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215 octave_value len_arg = (nargin == 2) |
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216 ? args(1) : octave_value ((double) INT_MAX); |
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217 |
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218 bool err = false; |
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219 |
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220 string tmp = os->getl (len_arg, err); |
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221 |
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222 if (! err) |
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223 { |
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224 retval(1) = (double) tmp.length (); |
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225 retval(0) = tmp; |
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226 } |
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227 } |
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228 else |
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229 gripe_invalid_file_id ("fgetl"); |
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230 } |
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231 else |
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232 print_usage ("fgetl"); |
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233 |
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234 return retval; |
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235 } |
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236 |
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237 DEFUN (fgets, args, , |
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238 "[STRING, LENGTH] = fgets (FILENUM [, LENGTH])\n\ |
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239 \n\ |
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240 read a string from a file") |
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529
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241 { |
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242 octave_value_list retval; |
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243 |
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244 retval(1) = 0.0; |
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245 retval(0) = -1.0; |
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529
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246 |
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247 int nargin = args.length (); |
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248 |
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249 if (nargin == 1 || nargin == 2) |
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250 { |
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251 octave_stream *os = octave_stream_list::lookup (args(0)); |
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252 |
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253 if (os) |
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254 { |
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255 octave_value len_arg = (nargin == 2) |
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256 ? args(1) : octave_value ((double) INT_MAX); |
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257 |
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258 bool err = false; |
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259 |
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260 string tmp = os->gets (len_arg, err); |
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261 |
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262 if (! err) |
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263 { |
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264 retval(1) = (double) tmp.length (); |
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265 retval(0) = tmp; |
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266 } |
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267 } |
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268 else |
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269 gripe_invalid_file_id ("fgets"); |
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270 } |
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271 else |
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272 print_usage ("fgets"); |
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273 |
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274 return retval; |
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275 } |
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276 |
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277 static octave_base_stream * |
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278 do_stream_open (const string& name, const string& mode, |
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279 const string& arch, int& fid) |
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280 { |
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281 octave_base_stream *retval = 0; |
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282 |
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283 fid = -1; |
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284 |
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285 int md = fopen_mode_to_ios_mode (mode); |
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286 |
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287 if (! error_state) |
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288 { |
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289 oct_mach_info::float_format flt_fmt = |
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290 oct_mach_info::string_to_float_format (arch); |
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291 |
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292 if (! error_state) |
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293 retval = new octave_fstream (name, md, flt_fmt); |
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294 } |
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295 |
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296 return retval; |
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297 } |
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298 |
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299 static octave_base_stream * |
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300 do_stream_open (const octave_value& tc_name, const octave_value& tc_mode, |
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301 const octave_value& tc_arch, const char *fcn, int& fid) |
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302 { |
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303 octave_base_stream *retval = 0; |
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304 |
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305 fid = -1; |
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306 |
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307 string name = tc_name.string_value (); |
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308 |
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309 if (! error_state) |
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310 { |
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311 string mode = tc_mode.string_value (); |
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312 |
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313 if (! error_state) |
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314 { |
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315 string arch = tc_arch.string_value (); |
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316 |
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317 if (! error_state) |
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318 retval = do_stream_open (name, mode, arch, fid); |
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319 else |
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320 ::error ("%s: architecture type must be a string", fcn); |
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321 } |
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322 else |
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323 ::error ("%s: file mode must be a string", fcn); |
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324 } |
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325 else |
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326 ::error ("%s: file name must be a string", fcn); |
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327 |
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328 return retval; |
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329 } |
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330 |
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1957
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331 DEFUN (fopen, args, , |
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332 "[FILENUM, ERRMSG] = fopen (FILENAME, MODE [, ARCH]): open a file\n\ |
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333 \n\ |
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334 FILENAME is a string specifying the name of the file.\n\ |
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335 \n\ |
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336 MODE is a string specifying whether the file should be opened for\n\ |
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337 reading, writing, or both. Valid values for MODE include:\n\ |
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338 \n\ |
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339 r : open text file for reading\n\ |
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340 w : open text file for writing; discard previous contents if any\n\ |
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341 a : append; open or create text file for writing at end of file\n\ |
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342 r+ : open text file for update (i.e., reading and writing)\n\ |
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343 w+ : create text file for update; discard previous contents if any\n\ |
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344 a+ : append; open or create text file for update, writing at end\n\ |
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345 \n\ |
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346 Update mode permits reading from and writing to the same file.\n\ |
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347 \n\ |
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348 ARCH is a string specifying the default data format for the file.\n\ |
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349 Valid values for ARCH are:\n\ |
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350 \n\ |
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351 native -- the format of the current machine (this is the default)\n\ |
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352 ieee-le -- IEEE big endian\n\ |
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353 ieee-be -- IEEE little endian\n\ |
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354 vaxd -- VAX D floating format\n\ |
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355 vaxg -- VAX G floating format\n\ |
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2324
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356 cray -- Cray floating format\n\ |
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357 \n\ |
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358 however, conversions are currently only supported for ieee-be, and\n\ |
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359 ieee-le formats.\n\ |
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360 \n\ |
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361 \n\ |
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362 FILENUM is a number that can be used to refer to the open file.\n\ |
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363 If fopen fails, FILENUM is set to -1 and ERRMSG contains a\n\ |
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364 system-dependent error message") |
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529
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365 { |
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2599
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366 octave_value_list retval; |
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367 |
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368 retval(0) = -1.0; |
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529
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369 |
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370 int nargin = args.length (); |
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371 |
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2095
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372 if (nargin == 1) |
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373 { |
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374 if (args(0).is_string () && args(0).string_value () == "all") |
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375 retval(0) = octave_stream_list::open_file_numbers (); |
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2095
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376 else |
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377 { |
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378 string_vector tmp = octave_stream_list::get_info (args(0)); |
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529
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379 |
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2095
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380 if (! error_state) |
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381 { |
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382 retval(2) = tmp(2); |
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383 retval(1) = tmp(1); |
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384 retval(0) = tmp(0); |
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385 } |
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2432
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386 } |
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1
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387 |
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2432
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388 return retval; |
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1
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389 } |
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390 |
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2095
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391 if (nargin > 0 && nargin < 4) |
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392 { |
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393 octave_value mode = (nargin == 2 || nargin == 3) |
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394 ? args(1) : octave_value ("r"); |
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395 |
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396 octave_value arch = (nargin == 3) |
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397 ? args(2) : octave_value ("native"); |
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398 |
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399 int fid = -1; |
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400 |
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401 octave_base_stream *os |
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402 = do_stream_open (args(0), mode, arch, "fopen", fid); |
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403 |
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404 if (os) |
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405 { |
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406 if (os->ok () && ! error_state) |
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407 { |
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408 retval(1) = ""; |
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409 retval(0) = (double) octave_stream_list::insert (os); |
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410 } |
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411 else |
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412 { |
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413 int errno = 0; |
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414 retval(1) = os->error (false, errno); |
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415 retval(0) = -1.0; |
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416 } |
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417 } |
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418 else |
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419 ::error ("fopen: internal error"); |
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420 } |
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421 else |
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422 print_usage ("fopen"); |
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1
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423 |
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424 return retval; |
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425 } |
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426 |
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1957
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427 DEFUN (freport, args, , |
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1181
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428 "freport (): list open files and their status") |
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429 { |
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2095
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430 octave_value_list retval; |
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1181
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431 |
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432 int nargin = args.length (); |
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433 |
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434 if (nargin > 0) |
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435 warning ("freport: ignoring extra arguments"); |
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436 |
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2095
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437 octave_stdout << octave_stream_list::list_open_files (); |
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1181
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438 |
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439 return retval; |
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440 } |
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441 |
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1957
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442 DEFUN (frewind, args, , |
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2116
|
443 "frewind (FILENUM): set file position at beginning of file") |
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529
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444 { |
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2095
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445 double retval = -1.0; |
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1
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446 |
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506
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447 int nargin = args.length (); |
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448 |
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2095
|
449 if (nargin == 1) |
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1086
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450 { |
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2095
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451 octave_stream *os = octave_stream_list::lookup (args(0)); |
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636
|
452 |
|
2095
|
453 if (os) |
|
|
454 retval = (double) os->rewind (); |
|
1
|
455 else |
|
2095
|
456 gripe_invalid_file_id ("frewind"); |
|
1
|
457 } |
|
|
458 else |
|
2095
|
459 print_usage ("frewind"); |
|
1
|
460 |
|
|
461 return retval; |
|
|
462 } |
|
|
463 |
|
1957
|
464 DEFUN (fseek, args, , |
|
2116
|
465 "fseek (FILENUM, OFFSET [, ORIGIN])\n\ |
|
1181
|
466 \n\ |
|
2341
|
467 set file position for reading or writing.\n\ |
|
|
468 \n\ |
|
|
469 ORIGIN may be one of:\n\ |
|
|
470 \n\ |
|
|
471 SEEK_SET : offset is relative to the beginning of the file (default)\n\ |
|
|
472 SEEK_CUR : offset is relative to the current position\n\ |
|
|
473 SEEK_END : offset is relative to the end of the file") |
|
529
|
474 { |
|
2095
|
475 double retval = -1.0; |
|
529
|
476 |
|
|
477 int nargin = args.length (); |
|
|
478 |
|
2095
|
479 if (nargin == 2 || nargin == 3) |
|
|
480 { |
|
|
481 octave_stream *os = octave_stream_list::lookup (args(0)); |
|
1181
|
482 |
|
2095
|
483 if (os) |
|
|
484 { |
|
|
485 octave_value origin_arg = (nargin == 3) |
|
2341
|
486 ? args(2) : octave_value (-1.0); |
|
1
|
487 |
|
2095
|
488 retval = (double) os->seek (args(1), origin_arg); |
|
|
489 } |
|
|
490 else |
|
|
491 ::error ("fseek: invalid file id"); |
|
368
|
492 } |
|
2095
|
493 else |
|
|
494 print_usage ("fseek"); |
|
1
|
495 |
|
|
496 return retval; |
|
|
497 } |
|
|
498 |
|
1957
|
499 DEFUN (ftell, args, , |
|
2116
|
500 "POSITION = ftell (FILENUM): returns the current file position") |
|
1181
|
501 { |
|
2095
|
502 double retval = -1.0; |
|
1
|
503 |
|
506
|
504 int nargin = args.length (); |
|
|
505 |
|
2095
|
506 if (nargin == 1) |
|
1
|
507 { |
|
2095
|
508 octave_stream *os = octave_stream_list::lookup (args(0)); |
|
1
|
509 |
|
2095
|
510 if (os) |
|
|
511 retval = (double) os->tell (); |
|
|
512 else |
|
|
513 gripe_invalid_file_id ("ftell"); |
|
1
|
514 } |
|
|
515 else |
|
2095
|
516 print_usage ("ftell"); |
|
1
|
517 |
|
|
518 return retval; |
|
|
519 } |
|
|
520 |
|
1957
|
521 DEFUN (fprintf, args, , |
|
2116
|
522 "fprintf (FILENUM, FORMAT, ...)") |
|
1181
|
523 { |
|
2095
|
524 double retval = -1.0; |
|
1181
|
525 |
|
|
526 int nargin = args.length (); |
|
|
527 |
|
2095
|
528 if (nargin > 1) |
|
|
529 { |
|
|
530 octave_stream *os = octave_stream_list::lookup (args(0)); |
|
|
531 |
|
|
532 if (os) |
|
|
533 { |
|
|
534 if (args(1).is_string ()) |
|
|
535 { |
|
|
536 string fmt = args(1).string_value (); |
|
|
537 |
|
|
538 octave_value_list tmp_args; |
|
|
539 |
|
|
540 if (nargin > 2) |
|
|
541 { |
|
|
542 tmp_args.resize (nargin-2, octave_value ()); |
|
|
543 |
|
|
544 for (int i = 2; i < nargin; i++) |
|
|
545 tmp_args(i-2) = args(i); |
|
|
546 } |
|
|
547 |
|
|
548 retval = os->printf (fmt, tmp_args); |
|
|
549 } |
|
|
550 else |
|
|
551 ::error ("fprintf: format must be a string"); |
|
|
552 } |
|
|
553 else |
|
|
554 gripe_invalid_file_id ("fprintf"); |
|
|
555 } |
|
|
556 else |
|
1181
|
557 print_usage ("fprintf"); |
|
|
558 |
|
|
559 return retval; |
|
|
560 } |
|
|
561 |
|
2095
|
562 DEFUN (fputs, args, , |
|
2116
|
563 "fputs (FILENUM, STRING)") |
|
1181
|
564 { |
|
2095
|
565 double retval = -1.0; |
|
1181
|
566 |
|
|
567 int nargin = args.length (); |
|
|
568 |
|
2095
|
569 if (nargin == 2) |
|
|
570 { |
|
|
571 octave_stream *os = octave_stream_list::lookup (args(0)); |
|
1181
|
572 |
|
2095
|
573 if (os) |
|
|
574 retval = os->puts (args(1)); |
|
|
575 else |
|
|
576 gripe_invalid_file_id ("fputs"); |
|
|
577 } |
|
1181
|
578 else |
|
2095
|
579 print_usage ("fputs"); |
|
1181
|
580 |
|
|
581 return retval; |
|
|
582 } |
|
|
583 |
|
2095
|
584 DEFUN (sprintf, args, , |
|
|
585 "[s, errmsg, status] = sprintf (FORMAT, ...)") |
|
1
|
586 { |
|
2095
|
587 octave_value_list retval; |
|
1
|
588 |
|
2095
|
589 int nargin = args.length (); |
|
1
|
590 |
|
2095
|
591 if (nargin > 0) |
|
1
|
592 { |
|
2116
|
593 retval(2) = -1.0; |
|
|
594 retval(1) = "unknown error"; |
|
|
595 retval(0) = ""; |
|
|
596 |
|
2095
|
597 octave_ostrstream ostr; |
|
1
|
598 |
|
2148
|
599 octave_stream os (&ostr, true); |
|
628
|
600 |
|
2095
|
601 if (os) |
|
|
602 { |
|
|
603 if (args(0).is_string ()) |
|
|
604 { |
|
|
605 string fmt = args(0).string_value (); |
|
628
|
606 |
|
2095
|
607 octave_value_list tmp_args; |
|
1
|
608 |
|
2095
|
609 if (nargin > 1) |
|
|
610 { |
|
|
611 tmp_args.resize (nargin-1, octave_value ()); |
|
1
|
612 |
|
2095
|
613 for (int i = 1; i < nargin; i++) |
|
|
614 tmp_args(i-1) = args(i); |
|
|
615 } |
|
628
|
616 |
|
2095
|
617 retval(2) = os.printf (fmt, tmp_args); |
|
|
618 retval(1) = os.error (); |
|
|
619 char *tmp = ostr.str (); |
|
|
620 retval(0) = tmp; |
|
|
621 delete [] tmp; |
|
|
622 } |
|
|
623 else |
|
|
624 ::error ("sprintf: format must be a string"); |
|
|
625 } |
|
|
626 else |
|
|
627 ::error ("sprintf: unable to create output buffer"); |
|
1
|
628 } |
|
|
629 else |
|
2095
|
630 print_usage ("sprintf"); |
|
1
|
631 |
|
|
632 return retval; |
|
|
633 } |
|
|
634 |
|
2095
|
635 DEFUN (fscanf, args, , |
|
2122
|
636 "[A, COUNT] = fscanf (FILENUM, FORMAT [, SIZE])\n\ |
|
|
637 \n\ |
|
|
638 Read from FILENUM according to FORMAT, returning the result in the\n\ |
|
|
639 matrix A. SIZE is optional. If present, it can be one of\n\ |
|
|
640 \n\ |
|
|
641 Inf : read as much as possible, returning a column vector\n\ |
|
|
642 (unless doing all character conversions, in which case a\n\ |
|
|
643 string is returned)\n\ |
|
|
644 NR : read as much as possible, returning a matrix with NR rows\n\ |
|
|
645 [NR, NC] : read up to NR x NC elements, returning a matrix with NR rows\n\ |
|
|
646 [NR, Inf] : same as NR\n\ |
|
|
647 \n\ |
|
|
648 If it is omitted, a value of Inf is assumed.\n\ |
|
|
649 \n\ |
|
2215
|
650 The number of items successfully read is returned in COUNT.\n\ |
|
|
651 \n\ |
|
|
652 [A, B, ...] = fscanf (FILENUM, FORMAT, \"C\")\n\ |
|
|
653 \n\ |
|
|
654 Read from FILENUM according to FORMAT, with each conversion specifier\n\ |
|
|
655 in FORMAT corresponding to a single scalar return value. This form is\n\ |
|
|
656 more `C-like', and also compatible with previous versions of Octave") |
|
1181
|
657 { |
|
2095
|
658 octave_value_list retval; |
|
1181
|
659 |
|
|
660 int nargin = args.length (); |
|
|
661 |
|
2215
|
662 if (nargin == 3 && args(2).is_string ()) |
|
2095
|
663 { |
|
|
664 octave_stream *os = octave_stream_list::lookup (args(0)); |
|
1181
|
665 |
|
2095
|
666 if (os) |
|
|
667 { |
|
|
668 if (args(1).is_string ()) |
|
|
669 { |
|
|
670 string fmt = args(1).string_value (); |
|
1181
|
671 |
|
2215
|
672 retval = os->oscanf (fmt); |
|
2095
|
673 } |
|
|
674 else |
|
|
675 ::error ("fscanf: format must be a string"); |
|
|
676 } |
|
|
677 else |
|
|
678 gripe_invalid_file_id ("fscanf"); |
|
|
679 } |
|
1181
|
680 else |
|
2215
|
681 { |
|
|
682 retval (1) = 0.0; |
|
|
683 retval (0) = Matrix (); |
|
|
684 |
|
|
685 if (nargin == 2 || nargin == 3) |
|
|
686 { |
|
|
687 octave_stream *os = octave_stream_list::lookup (args(0)); |
|
|
688 |
|
|
689 if (os) |
|
|
690 { |
|
|
691 if (args(1).is_string ()) |
|
|
692 { |
|
|
693 string fmt = args(1).string_value (); |
|
|
694 |
|
|
695 int count = 0; |
|
|
696 |
|
|
697 Matrix size = (nargin == 3) |
|
|
698 ? args(2).matrix_value () : Matrix (1, 1, octave_Inf); |
|
|
699 |
|
|
700 if (! error_state) |
|
|
701 { |
|
|
702 octave_value tmp = os->scanf (fmt, size, count); |
|
|
703 |
|
|
704 retval(1) = (double) count; |
|
|
705 retval(0) = tmp; |
|
|
706 } |
|
|
707 } |
|
|
708 else |
|
|
709 ::error ("fscanf: format must be a string"); |
|
|
710 } |
|
|
711 else |
|
|
712 gripe_invalid_file_id ("fscanf"); |
|
|
713 } |
|
|
714 else |
|
|
715 print_usage ("fscanf"); |
|
|
716 } |
|
1181
|
717 |
|
|
718 return retval; |
|
|
719 } |
|
|
720 |
|
2095
|
721 DEFUN (sscanf, args, , |
|
2122
|
722 "[A, COUNT, ERRMSG, INDEX] = sscanf (STRING, FORMAT, SIZE)\n\ |
|
|
723 \n\ |
|
2215
|
724 Read from STRING according to FORMAT, returning the result in the\n\ |
|
2122
|
725 matrix A. SIZE is optional. If present, it can be one of\n\ |
|
|
726 \n\ |
|
|
727 Inf : read as much as possible, returning a column vector\n\ |
|
|
728 (unless doing all character conversions, in which case a\n\ |
|
|
729 string is returned)\n\ |
|
|
730 NR : read as much as possible, returning a matrix with NR rows\n\ |
|
|
731 [NR, NC] : read up to NR x NC elements, returning a matrix with NR rows\n\ |
|
|
732 [NR, Inf] : same as NR\n\ |
|
|
733 \n\ |
|
|
734 If it is omitted, a value of Inf is assumed.\n\ |
|
|
735 \n\ |
|
|
736 The number of items successfully read is returned in COUNT. If an\n\ |
|
|
737 error occurs, ERRMSG contains the text of the corresponding error\n\ |
|
|
738 message. INDEX contains the index of the next character to be read\n\ |
|
2215
|
739 from STRING\n\ |
|
|
740 \n\ |
|
|
741 [A, B, ...] = sscanf (STRING, FORMAT, \"C\")\n\ |
|
|
742 \n\ |
|
|
743 Read from STRING according to FORMAT, with each conversion specifier\n\ |
|
|
744 in FORMAT corresponding to a single scalar return value. This form is\n\ |
|
|
745 more `C-like', and also compatible with previous versions of Octave") |
|
444
|
746 { |
|
2095
|
747 octave_value_list retval; |
|
444
|
748 |
|
506
|
749 int nargin = args.length (); |
|
|
750 |
|
2215
|
751 if (nargin == 3 && args(2).is_string ()) |
|
2095
|
752 { |
|
|
753 if (args(0).is_string ()) |
|
|
754 { |
|
|
755 string data = args(0).string_value (); |
|
444
|
756 |
|
2095
|
757 octave_istrstream istr (data); |
|
1358
|
758 |
|
2148
|
759 octave_stream os (&istr, true); |
|
636
|
760 |
|
2095
|
761 if (os) |
|
|
762 { |
|
|
763 if (args(1).is_string ()) |
|
|
764 { |
|
|
765 string fmt = args(1).string_value (); |
|
444
|
766 |
|
2215
|
767 retval = os.oscanf (fmt); |
|
2095
|
768 } |
|
|
769 else |
|
|
770 ::error ("sscanf: format must be a string"); |
|
|
771 } |
|
|
772 else |
|
|
773 ::error ("sscanf: unable to create temporary input buffer"); |
|
444
|
774 } |
|
636
|
775 else |
|
2095
|
776 ::error ("sscanf: first argument must be a string"); |
|
444
|
777 } |
|
|
778 else |
|
2215
|
779 { |
|
|
780 if (nargin == 2 || nargin == 3) |
|
|
781 { |
|
|
782 retval(3) = -1.0; |
|
|
783 retval(2) = "unknown error"; |
|
|
784 retval(1) = 0.0; |
|
|
785 retval(0) = Matrix (); |
|
|
786 |
|
|
787 if (args(0).is_string ()) |
|
|
788 { |
|
|
789 string data = args(0).string_value (); |
|
|
790 |
|
|
791 octave_istrstream istr (data); |
|
|
792 |
|
|
793 octave_stream os (&istr, true); |
|
|
794 |
|
|
795 if (os) |
|
|
796 { |
|
|
797 if (args(1).is_string ()) |
|
|
798 { |
|
|
799 string fmt = args(1).string_value (); |
|
|
800 |
|
|
801 int count = 0; |
|
|
802 |
|
|
803 Matrix size = (nargin == 3) |
|
|
804 ? args(2).matrix_value () : Matrix (1, 1, octave_Inf); |
|
|
805 |
|
|
806 octave_value tmp = os.scanf (fmt, size, count); |
|
|
807 |
|
|
808 // XXX FIXME XXX -- is this the right thing to do? |
|
|
809 // Extract error message first, because getting |
|
|
810 // position will clear it. |
|
|
811 string errmsg = os.error (); |
|
|
812 |
|
|
813 retval(3) = (double) (os.tell () + 1); |
|
|
814 retval(2) = errmsg; |
|
|
815 retval(1) = (double) count; |
|
|
816 retval(0) = tmp; |
|
|
817 } |
|
|
818 else |
|
|
819 ::error ("sscanf: format must be a string"); |
|
|
820 } |
|
|
821 else |
|
|
822 ::error ("sscanf: unable to create temporary input buffer"); |
|
|
823 } |
|
|
824 else |
|
|
825 ::error ("sscanf: first argument must be a string"); |
|
|
826 } |
|
|
827 else |
|
|
828 print_usage ("sscanf"); |
|
|
829 } |
|
444
|
830 |
|
|
831 return retval; |
|
|
832 } |
|
|
833 |
|
2215
|
834 DEFUN (scanf, args, nargout, |
|
|
835 "scanf (FORMAT) is equivalent to fscanf (stdin, FORMAT)") |
|
|
836 { |
|
|
837 int nargin = args.length (); |
|
|
838 |
|
|
839 octave_value_list tmp_args (nargin+1, octave_value ()); |
|
|
840 |
|
|
841 tmp_args (0) = 0.0; |
|
|
842 for (int i = 0; i < nargin; i++) |
|
|
843 tmp_args (i+1) = args (i); |
|
|
844 |
|
|
845 return Ffscanf (tmp_args, nargout); |
|
|
846 } |
|
|
847 |
|
2116
|
848 static octave_value |
|
|
849 do_fread (octave_stream& os, const octave_value& size_arg, |
|
|
850 const octave_value& prec_arg, const octave_value& skip_arg, |
|
|
851 const octave_value& arch_arg, int& count) |
|
|
852 { |
|
|
853 octave_value retval; |
|
|
854 |
|
|
855 count = -1; |
|
|
856 |
|
|
857 Matrix size = size_arg.matrix_value (); |
|
|
858 |
|
|
859 if (! error_state) |
|
|
860 { |
|
|
861 string prec = prec_arg.string_value (); |
|
|
862 |
|
|
863 if (! error_state) |
|
|
864 { |
|
2318
|
865 oct_data_conv::data_type dt |
|
|
866 = oct_data_conv::string_to_data_type (prec); |
|
2116
|
867 |
|
|
868 if (! error_state) |
|
|
869 { |
|
|
870 double dskip = skip_arg.double_value (); |
|
|
871 |
|
|
872 if (! error_state) |
|
|
873 { |
|
|
874 if (D_NINT (dskip) == dskip) |
|
|
875 { |
|
|
876 int skip = NINT (dskip); |
|
|
877 |
|
|
878 string arch = arch_arg.string_value (); |
|
|
879 |
|
|
880 if (! error_state) |
|
|
881 { |
|
2318
|
882 oct_mach_info::float_format flt_fmt |
|
|
883 = oct_mach_info::string_to_float_format (arch); |
|
2116
|
884 |
|
|
885 if (! error_state) |
|
2318
|
886 retval = os.read (size, dt, skip, flt_fmt, count); |
|
2116
|
887 } |
|
|
888 else |
|
|
889 ::error ("fread: architecture type must be a string"); |
|
|
890 } |
|
|
891 else |
|
|
892 ::error ("fread: skip must be an integer"); |
|
|
893 } |
|
|
894 else |
|
|
895 ::error ("fread: invalid skip specified"); |
|
|
896 } |
|
|
897 else |
|
|
898 ::error ("fread: invalid data type specified"); |
|
|
899 } |
|
|
900 else |
|
|
901 ::error ("fread: precision must be a string"); |
|
|
902 } |
|
|
903 else |
|
|
904 ::error ("fread: invalid size specified"); |
|
|
905 |
|
|
906 return retval; |
|
|
907 } |
|
|
908 |
|
|
909 DEFUN (fread, args, , |
|
|
910 "[DATA, COUNT] = fread (FILENUM [, SIZE] [, PRECISION] [, SKIP] [, ARCH])\n\ |
|
529
|
911 \n\ |
|
2318
|
912 Reads data in binary form of type PRECISION from a file.\n\ |
|
|
913 \n\ |
|
|
914 FILENUM : file number from fopen\n\ |
|
529
|
915 \n\ |
|
2318
|
916 SIZE : size specification for the data matrix\n\ |
|
|
917 \n\ |
|
|
918 PRECISION : string specifying type of data to read, valid types are\n\ |
|
529
|
919 \n\ |
|
2318
|
920 char, char*1, integer*1, int8 -- character\n\ |
|
|
921 schar, signed char -- signed character\n\ |
|
|
922 uchar, unsigned char -- unsigned character (default)\n\ |
|
|
923 short -- short integer\n\ |
|
|
924 ushort, unsigned short -- unsigned short integer\n\ |
|
|
925 int -- integer\n\ |
|
|
926 uint, unsigned int -- unsigned integer\n\ |
|
|
927 long -- long integer\n\ |
|
|
928 ulong, unsigned long -- unsigned long integer\n\ |
|
|
929 float, float32, real*4 -- single precision float\n\ |
|
|
930 double, float64, real*8 -- double precision float\n\ |
|
|
931 int16, integer*2 -- two byte integer\n\ |
|
|
932 int32, integer*4 -- four byte integer\n\ |
|
|
933 \n\ |
|
|
934 SKIP : number of bytes to skip before each element is read\n\ |
|
|
935 (default is 0)\n\ |
|
529
|
936 \n\ |
|
2318
|
937 ARCH : string specifying the data format for the file. Valid |
|
|
938 values are\n\ |
|
|
939 \n\ |
|
|
940 native -- the format of the current machine (default)\n\ |
|
|
941 ieee-le -- IEEE big endian\n\ |
|
|
942 ieee-be -- IEEE little endian\n\ |
|
|
943 vaxd -- VAX D floating format\n\ |
|
|
944 vaxg -- VAX G floating format\n\ |
|
2324
|
945 cray -- Cray floating format\n\ |
|
2318
|
946 \n\ |
|
2324
|
947 however, conversions are currently only supported for\n\ |
|
|
948 ieee-be, and ieee-le formats.\n\ |
|
2318
|
949 \n\ |
|
|
950 \n\ |
|
|
951 DATA : matrix in which the data is stored\n\ |
|
|
952 \n\ |
|
|
953 COUNT : number of elements read") |
|
529
|
954 { |
|
2095
|
955 octave_value_list retval; |
|
2116
|
956 |
|
|
957 int nargin = args.length (); |
|
|
958 |
|
2318
|
959 if (nargin > 0 && nargin < 6) |
|
2116
|
960 { |
|
|
961 retval(1) = -1.0; |
|
|
962 retval(0) = Matrix (); |
|
|
963 |
|
|
964 octave_stream *os = octave_stream_list::lookup (args(0)); |
|
|
965 |
|
|
966 if (os) |
|
|
967 { |
|
|
968 octave_value size = (nargin > 1) |
|
|
969 ? args(1) : octave_value (octave_Inf); |
|
|
970 |
|
|
971 octave_value prec = (nargin > 2) |
|
|
972 ? args(2) : octave_value ("uchar"); |
|
|
973 |
|
|
974 octave_value skip = (nargin > 3) |
|
|
975 ? args(3) : octave_value (0.0); |
|
|
976 |
|
|
977 octave_value arch = (nargin > 4) |
|
2318
|
978 ? args(4) : octave_value ("unknown"); |
|
2116
|
979 |
|
|
980 int count = -1; |
|
|
981 |
|
|
982 octave_value tmp = do_fread (*os, size, prec, skip, arch, count); |
|
|
983 |
|
|
984 retval(1) = (double) count; |
|
|
985 retval(0) = tmp; |
|
|
986 } |
|
|
987 else |
|
|
988 gripe_invalid_file_id ("fread"); |
|
|
989 } |
|
|
990 else |
|
|
991 print_usage ("fread"); |
|
|
992 |
|
529
|
993 return retval; |
|
|
994 } |
|
|
995 |
|
2116
|
996 static int |
|
|
997 do_fwrite (octave_stream& os, const octave_value& data, |
|
|
998 const octave_value& prec_arg, const octave_value& skip_arg, |
|
|
999 const octave_value& arch_arg) |
|
|
1000 { |
|
|
1001 int retval = -1; |
|
|
1002 |
|
|
1003 string prec = prec_arg.string_value (); |
|
|
1004 |
|
|
1005 if (! error_state) |
|
|
1006 { |
|
2318
|
1007 oct_data_conv::data_type dt |
|
|
1008 = oct_data_conv::string_to_data_type (prec); |
|
2116
|
1009 |
|
|
1010 if (! error_state) |
|
|
1011 { |
|
|
1012 double dskip = skip_arg.double_value (); |
|
|
1013 |
|
|
1014 if (! error_state) |
|
|
1015 { |
|
|
1016 if (D_NINT (dskip) == dskip) |
|
|
1017 { |
|
|
1018 int skip = NINT (dskip); |
|
|
1019 |
|
|
1020 string arch = arch_arg.string_value (); |
|
|
1021 |
|
|
1022 if (! error_state) |
|
|
1023 { |
|
2318
|
1024 oct_mach_info::float_format flt_fmt |
|
|
1025 = oct_mach_info::string_to_float_format (arch); |
|
2116
|
1026 |
|
|
1027 if (! error_state) |
|
2318
|
1028 retval = os.write (data, dt, skip, flt_fmt); |
|
2116
|
1029 } |
|
|
1030 else |
|
|
1031 ::error ("fwrite: architecture type must be a string"); |
|
|
1032 } |
|
|
1033 else |
|
|
1034 ::error ("fwrite: skip must be an integer"); |
|
|
1035 } |
|
|
1036 else |
|
|
1037 ::error ("fwrite: invalid skip specified"); |
|
|
1038 } |
|
|
1039 } |
|
|
1040 else |
|
|
1041 ::error ("fwrite: precision must be a string"); |
|
|
1042 |
|
|
1043 return retval; |
|
|
1044 } |
|
|
1045 |
|
|
1046 DEFUN (fwrite, args, , |
|
|
1047 "COUNT = fwrite (FILENUM, DATA [, PRECISION] [, SKIP] [, ARCH])\n\ |
|
1181
|
1048 \n\ |
|
2318
|
1049 Writes data to a file in binary form of size PRECISION\n\ |
|
|
1050 \n\ |
|
|
1051 FILENUM : file number from fopen\n\ |
|
|
1052 \n\ |
|
|
1053 DATA : matrix of elements to be written\n\ |
|
|
1054 \n\ |
|
|
1055 PRECISION : string specifying type of data to read, valid types are\n\ |
|
1181
|
1056 \n\ |
|
2318
|
1057 char, char*1, integer*1, int8 -- character\n\ |
|
|
1058 schar, signed char -- signed character\n\ |
|
|
1059 uchar, unsigned char -- unsigned character (default)\n\ |
|
|
1060 short -- short integer\n\ |
|
|
1061 ushort, unsigned short -- unsigned short integer\n\ |
|
|
1062 int -- integer\n\ |
|
|
1063 uint, unsigned int -- unsigned integer\n\ |
|
|
1064 long -- long integer\n\ |
|
|
1065 ulong, unsigned long -- unsigned long integer\n\ |
|
|
1066 float, float32, real*4 -- single precision float\n\ |
|
|
1067 double, float64, real*8 -- double precision float\n\ |
|
|
1068 int16, integer*2 -- two byte integer\n\ |
|
|
1069 int32, integer*4 -- four byte integer\n\ |
|
1181
|
1070 \n\ |
|
2318
|
1071 SKIP : number of bytes to skip before each element is read\n\ |
|
|
1072 (the default is 0)\n\ |
|
|
1073 \n\ |
|
|
1074 ARCH : string specifying the data format for the file. Valid |
|
|
1075 values are\n\ |
|
1181
|
1076 \n\ |
|
2318
|
1077 native -- the format of the current machine (default)\n\ |
|
|
1078 ieee-le -- IEEE big endian\n\ |
|
|
1079 ieee-be -- IEEE little endian\n\ |
|
|
1080 vaxd -- VAX D floating format\n\ |
|
|
1081 vaxg -- VAX G floating format\n\ |
|
|
1082 cray -- Cray floating format\n |
|
|
1083 \n\ |
|
|
1084 however, conversions are currently only supported for ieee-be, and\n\ |
|
|
1085 ieee-le formats.\n\ |
|
|
1086 \n\ |
|
|
1087 \n\ |
|
|
1088 COUNT : number of elements written") |
|
1181
|
1089 { |
|
2116
|
1090 octave_value retval = -1.0; |
|
|
1091 |
|
|
1092 int nargin = args.length (); |
|
|
1093 |
|
|
1094 if (nargin > 1 && nargin < 6) |
|
|
1095 { |
|
|
1096 octave_stream *os = octave_stream_list::lookup (args(0)); |
|
|
1097 |
|
|
1098 if (os) |
|
|
1099 { |
|
|
1100 octave_value data = args(1); |
|
2318
|
1101 |
|
|
1102 octave_value prec = (nargin > 2) |
|
|
1103 ? args(2) : octave_value ("uchar"); |
|
|
1104 |
|
|
1105 octave_value skip = (nargin > 3) |
|
|
1106 ? args(3) : octave_value (0.0); |
|
|
1107 |
|
|
1108 octave_value arch = (nargin > 4) |
|
|
1109 ? args(4) : octave_value ("unknown"); |
|
2116
|
1110 |
|
|
1111 retval = do_fwrite (*os, data, prec, skip, arch); |
|
|
1112 } |
|
|
1113 else |
|
|
1114 gripe_invalid_file_id ("fwrite"); |
|
|
1115 } |
|
|
1116 else |
|
|
1117 print_usage ("fwrite"); |
|
|
1118 |
|
1181
|
1119 return retval; |
|
|
1120 } |
|
|
1121 |
|
1957
|
1122 DEFUN (feof, args, , |
|
2116
|
1123 "ERROR = feof (FILENUM)\n\ |
|
529
|
1124 \n\ |
|
|
1125 Returns a non zero value for an end of file condition for the\n\ |
|
2116
|
1126 file specified by FILENUM from fopen") |
|
529
|
1127 { |
|
2095
|
1128 double retval = -1.0; |
|
529
|
1129 |
|
|
1130 int nargin = args.length (); |
|
|
1131 |
|
2095
|
1132 if (nargin == 1) |
|
|
1133 { |
|
|
1134 octave_stream *os = octave_stream_list::lookup (args(0)); |
|
444
|
1135 |
|
2095
|
1136 if (os) |
|
|
1137 retval = os->eof () ? 1.0 : 0.0; |
|
|
1138 else |
|
|
1139 gripe_invalid_file_id ("feof"); |
|
|
1140 } |
|
529
|
1141 else |
|
2095
|
1142 print_usage ("feof"); |
|
444
|
1143 |
|
|
1144 return retval; |
|
|
1145 } |
|
|
1146 |
|
2095
|
1147 DEFUN (ferror, args, , |
|
2116
|
1148 "ERROR = ferror (FILENUM, [\"clear\"])\n\ |
|
2095
|
1149 \n\ |
|
|
1150 Returns a non zero value for an error condition on the\n\ |
|
2116
|
1151 file specified by FILENUM from fopen") |
|
1230
|
1152 { |
|
2095
|
1153 octave_value_list retval; |
|
1230
|
1154 |
|
2095
|
1155 int nargin = args.length (); |
|
1230
|
1156 |
|
2095
|
1157 if (nargin == 1 || nargin == 2) |
|
|
1158 { |
|
|
1159 octave_stream *os = octave_stream_list::lookup (args(0)); |
|
1230
|
1160 |
|
2095
|
1161 if (os) |
|
|
1162 { |
|
|
1163 bool clear = false; |
|
1230
|
1164 |
|
2095
|
1165 if (nargin == 2) |
|
|
1166 { |
|
|
1167 string opt = args(1).string_value (); |
|
|
1168 |
|
|
1169 if (! error_state) |
|
|
1170 clear = (opt == "clear"); |
|
|
1171 else |
|
|
1172 return retval; |
|
|
1173 } |
|
1755
|
1174 |
|
2095
|
1175 int error_number = 0; |
|
|
1176 |
|
|
1177 string error_message = os->error (clear, error_number); |
|
1230
|
1178 |
|
2095
|
1179 retval(1) = (double) error_number; |
|
|
1180 retval(0) = error_message; |
|
|
1181 } |
|
|
1182 else |
|
|
1183 gripe_invalid_file_id ("ferror"); |
|
1230
|
1184 } |
|
2095
|
1185 else |
|
|
1186 print_usage ("ferror"); |
|
1230
|
1187 |
|
|
1188 return retval; |
|
|
1189 } |
|
|
1190 |
|
1957
|
1191 DEFUN (popen, args, , |
|
1230
|
1192 "FILENUM = popen (FILENAME, MODE)\n\ |
|
|
1193 \n\ |
|
|
1194 start a process and create a pipe. Valid values for mode are:\n\ |
|
|
1195 \n\ |
|
|
1196 \"r\" : connect stdout of process to pipe\n\ |
|
|
1197 \"w\" : connect stdin of process to pipe") |
|
|
1198 { |
|
2095
|
1199 double retval = -1.0; |
|
1230
|
1200 |
|
|
1201 int nargin = args.length (); |
|
|
1202 |
|
2095
|
1203 if (nargin == 2) |
|
|
1204 { |
|
|
1205 string name = args(0).string_value (); |
|
1230
|
1206 |
|
2095
|
1207 if (! error_state) |
|
|
1208 { |
|
|
1209 string mode = args(1).string_value (); |
|
1230
|
1210 |
|
2095
|
1211 if (! error_state) |
|
|
1212 { |
|
|
1213 if (mode == "r") |
|
|
1214 { |
|
|
1215 octave_iprocstream *ips = new octave_iprocstream (name); |
|
1230
|
1216 |
|
2095
|
1217 retval = octave_stream_list::insert (ips); |
|
|
1218 } |
|
|
1219 else if (mode == "w") |
|
|
1220 { |
|
|
1221 octave_oprocstream *ops = new octave_oprocstream (name); |
|
1230
|
1222 |
|
2095
|
1223 retval = octave_stream_list::insert (ops); |
|
|
1224 } |
|
|
1225 else |
|
|
1226 ::error ("popen: invalid mode specified"); |
|
|
1227 } |
|
|
1228 else |
|
|
1229 ::error ("popen: mode must be a string"); |
|
|
1230 } |
|
|
1231 else |
|
|
1232 ::error ("popen: name must be a string"); |
|
|
1233 } |
|
1230
|
1234 else |
|
2095
|
1235 print_usage ("popen"); |
|
1230
|
1236 |
|
|
1237 return retval; |
|
|
1238 } |
|
|
1239 |
|
1957
|
1240 DEFUN (pclose, args, , |
|
2116
|
1241 "pclose (FILENUM)\n\ |
|
1230
|
1242 \n\ |
|
|
1243 Close a pipe and terminate the associated process") |
|
|
1244 { |
|
2095
|
1245 double retval = -1.0; |
|
1230
|
1246 |
|
|
1247 int nargin = args.length (); |
|
|
1248 |
|
2095
|
1249 if (nargin == 1) |
|
1230
|
1250 { |
|
2095
|
1251 retval = (double) octave_stream_list::remove (args(0)); |
|
1230
|
1252 |
|
2095
|
1253 if (retval < 0) |
|
|
1254 gripe_invalid_file_id ("pclose"); |
|
1377
|
1255 } |
|
|
1256 else |
|
2095
|
1257 print_usage ("pclose"); |
|
1379
|
1258 |
|
|
1259 return retval; |
|
|
1260 } |
|
|
1261 |
|
2458
|
1262 DEFUN (tmpnam, args, , |
|
|
1263 "tmpnam ()\n\ |
|
2237
|
1264 Return unique temporary file name.") |
|
1802
|
1265 { |
|
2095
|
1266 octave_value retval; |
|
1802
|
1267 |
|
|
1268 if (args.length () == 0) |
|
|
1269 retval = oct_tempnam (); |
|
|
1270 else |
|
2458
|
1271 print_usage ("tmpnam"); |
|
1802
|
1272 |
|
|
1273 return retval; |
|
|
1274 } |
|
|
1275 |
|
2458
|
1276 DEFALIAS (octave_tmp_file_name, tmpnam); |
|
|
1277 |
|
1400
|
1278 static int |
|
|
1279 convert (int x, int ibase, int obase) |
|
|
1280 { |
|
|
1281 int retval = 0; |
|
|
1282 |
|
|
1283 int tmp = x % obase; |
|
|
1284 |
|
|
1285 if (tmp > ibase - 1) |
|
2095
|
1286 ::error ("umask: invalid digit"); |
|
1400
|
1287 else |
|
|
1288 { |
|
|
1289 retval = tmp; |
|
|
1290 int mult = ibase; |
|
|
1291 while ((x = (x - tmp) / obase)) |
|
|
1292 { |
|
|
1293 tmp = x % obase; |
|
|
1294 if (tmp > ibase - 1) |
|
|
1295 { |
|
2095
|
1296 ::error ("umask: invalid digit"); |
|
1400
|
1297 break; |
|
|
1298 } |
|
|
1299 retval += mult * tmp; |
|
|
1300 mult *= ibase; |
|
|
1301 } |
|
|
1302 } |
|
|
1303 |
|
|
1304 return retval; |
|
|
1305 } |
|
|
1306 |
|
1957
|
1307 DEFUN (umask, args, , |
|
1400
|
1308 "umask (MASK)\n\ |
|
|
1309 \n\ |
|
|
1310 Change the file permission mask for file creation for the current |
|
|
1311 process. MASK is an integer, interpreted as an octal number. If |
|
|
1312 successful, returns the previous value of the mask (as an integer to |
|
|
1313 be interpreted as an octal number); otherwise an error message is |
|
|
1314 printed.") |
|
|
1315 { |
|
2095
|
1316 octave_value_list retval; |
|
1400
|
1317 |
|
|
1318 int status = 0; |
|
|
1319 |
|
|
1320 if (args.length () == 1) |
|
|
1321 { |
|
|
1322 double dmask = args(0).double_value (); |
|
|
1323 |
|
|
1324 if (error_state) |
|
|
1325 { |
|
|
1326 status = -1; |
|
2095
|
1327 ::error ("umask: expecting integer argument"); |
|
1400
|
1328 } |
|
|
1329 else |
|
|
1330 { |
|
|
1331 int mask = NINT (dmask); |
|
|
1332 |
|
|
1333 if ((double) mask != dmask || mask < 0) |
|
|
1334 { |
|
|
1335 status = -1; |
|
2095
|
1336 ::error ("umask: MASK must be a positive integer value"); |
|
1400
|
1337 } |
|
|
1338 else |
|
|
1339 { |
|
|
1340 int oct_mask = convert (mask, 8, 10); |
|
|
1341 |
|
|
1342 if (! error_state) |
|
1773
|
1343 status = convert (oct_umask (oct_mask), 10, 8); |
|
1400
|
1344 } |
|
|
1345 } |
|
|
1346 } |
|
|
1347 else |
|
|
1348 print_usage ("umask"); |
|
|
1349 |
|
|
1350 if (status >= 0) |
|
|
1351 retval(0) = (double) status; |
|
|
1352 |
|
|
1353 return retval; |
|
|
1354 } |
|
|
1355 |
|
2189
|
1356 void |
|
|
1357 symbols_of_file_io (void) |
|
|
1358 { |
|
2341
|
1359 // NOTE: the values of SEEK_SET, SEEK_CUR, and SEEK_END have to be |
|
|
1360 // this way for Matlab compatibility. |
|
|
1361 |
|
|
1362 DEFCONST (SEEK_SET, -1.0, 0, 0, |
|
2189
|
1363 "used with fseek to position file relative to the beginning"); |
|
|
1364 |
|
2341
|
1365 DEFCONST (SEEK_CUR, 0.0, 0, 0, |
|
2189
|
1366 "used with fseek to position file relative to the current position"); |
|
|
1367 |
|
2341
|
1368 DEFCONST (SEEK_END, 1.0, 0, 0, |
|
2189
|
1369 "used with fseek to position file relative to the end"); |
|
|
1370 |
|
|
1371 DEFCONSTX ("stdin", SBV_stdin, 0.0, 0, 0, |
|
|
1372 "file number of the standard input stream"); |
|
|
1373 |
|
|
1374 DEFCONSTX ("stdout", SBV_stdout, 1.0, 0, 0, |
|
|
1375 "file number of the standard output stream"); |
|
|
1376 |
|
|
1377 DEFCONSTX ("stderr", SBV_stderr, 2.0, 0, 0, |
|
|
1378 "file number of the standard error stream"); |
|
|
1379 } |
|
|
1380 |
|
444
|
1381 /* |
|
1
|
1382 ;;; Local Variables: *** |
|
|
1383 ;;; mode: C++ *** |
|
|
1384 ;;; End: *** |
|
|
1385 */ |
