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annotate libinterp/corefcn/pager.cc @ 29655:32f4357ac8d9

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maint: merge stable to default.
author Markus Mützel <markus.muetzel@gmx.de>
date Wed, 12 May 2021 19:28:54 +0200
parents aef11bb4e6d1 d13d090cb03a
children 32c3a5805893
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 1993-2021 The Octave Project Developers
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4 //
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5 // See the file COPYRIGHT.md in the top-level directory of this
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6 // distribution or <https://octave.org/copyright/>.
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7 //
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8 // This file is part of Octave.
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9 //
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10 // Octave is free software: you can redistribute it and/or modify it
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11 // under the terms of the GNU General Public License as published by
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12 // the Free Software Foundation, either version 3 of the License, or
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13 // (at your option) any later version.
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14 //
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15 // Octave is distributed in the hope that it will be useful, but
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 // GNU General Public License for more details.
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19 //
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20 // You should have received a copy of the GNU General Public License
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21 // along with Octave; see the file COPYING. If not, see
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22 // <https://www.gnu.org/licenses/>.
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23 //
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24 ////////////////////////////////////////////////////////////////////////
1
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25
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26 #if defined (HAVE_CONFIG_H)
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27 # include "config.h"
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28 #endif
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29
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30 #include <fstream>
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31 #include <iostream>
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32 #include <string>
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33
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34 #include "child-list.h"
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35 #include "cmd-edit.h"
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36 #include "oct-env.h"
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37 #include "oct-syscalls.h"
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38
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39 #include "defaults.h"
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40 #include "defun.h"
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41 #include "error.h"
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42 #include "errwarn.h"
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43 #include "input.h"
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44 #include "interpreter.h"
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45 #include "interpreter-private.h"
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46 #include "octave.h"
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47 #include "ovl.h"
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48 #include "pager.h"
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49 #include "procstream.h"
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50 #include "sighandlers.h"
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51 #include "unwind-prot.h"
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52 #include "utils.h"
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53 #include "variables.h"
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54
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55 namespace octave
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56 {
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57 static bool
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58 pager_event_handler (pid_t pid, int status)
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59 {
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60 bool retval = false;
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61
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62 if (pid > 0)
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63 {
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64 if (sys::wifexited (status) || sys::wifsignaled (status))
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65 {
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66 // Avoid warning() since that will put us back in the pager,
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67 // which would be bad news.
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68
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69 std::cerr << "warning: connection to external pager lost (pid = "
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70 << pid << ')' << std::endl;
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71 std::cerr << "warning: flushing pending output (please wait)"
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72 << std::endl;
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73
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74 // Request removal of this PID from the list of child
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75 // processes.
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76
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77 retval = true;
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78 }
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79 }
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80
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81 return retval;
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82 }
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83
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84 // Assume our terminal wraps long lines.
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85
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86 static bool
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87 more_than_a_screenful (const char *s, int len)
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88 {
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89 if (s)
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90 {
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91 int available_rows = command_editor::terminal_rows () - 2;
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92
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93 int cols = command_editor::terminal_cols ();
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94
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95 int count = 0;
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96
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97 int chars_this_line = 0;
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98
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99 for (int i = 0; i < len; i++)
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100 {
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101 if (*s++ == '\n')
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102 {
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103 count += chars_this_line / cols + 1;
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104 chars_this_line = 0;
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105 }
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106 else
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107 chars_this_line++;
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108 }
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109
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110 if (count > available_rows)
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111 return true;
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112 }
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113
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114 return false;
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115 }
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116
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117 static std::string default_pager (void)
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118 {
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119 std::string pager_binary = sys::env::getenv ("PAGER");
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120
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121 if (pager_binary.empty ())
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122 pager_binary = config::default_pager ();
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123
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124 return pager_binary;
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125 }
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126
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127 int
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128 pager_buf::sync (void)
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129 {
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130 output_system& output_sys = __get_output_system__ ("pager_buf::sync");
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131
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132 char *buf = pbase ();
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133
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134 int len = pptr () - buf;
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135
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136 if (output_sys.sync (buf, len))
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137 {
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138 flush_current_contents_to_diary ();
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139
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140 seekoff (0, std::ios::beg);
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141 }
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142
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143 return 0;
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144 }
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145
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146 void
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147 pager_buf::flush_current_contents_to_diary (void)
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148 {
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149 char *buf = pbase () + diary_skip;
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150
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151 std::size_t len = pptr () - buf;
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152
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153 octave_diary.write (buf, len);
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154
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155 diary_skip = 0;
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156 }
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157
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158 void
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159 pager_buf::set_diary_skip (void)
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160 {
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161 diary_skip = pptr () - pbase ();
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162 }
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163
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164 int
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165 diary_buf::sync (void)
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166 {
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167 output_system& output_sys = __get_output_system__ ("__stdout__");
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168
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169 std::ofstream& external_diary_file = output_sys.external_diary_file ();
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170
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171 if (output_sys.write_to_diary_file () && external_diary_file)
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172 {
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173 char *buf = pbase ();
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174
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175 int len = pptr () - buf;
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176
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177 if (len > 0)
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178 external_diary_file.write (buf, len);
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179 }
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180
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181 seekoff (0, std::ios::beg);
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182
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183 return 0;
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184 }
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185
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186 pager_stream::pager_stream (void) : std::ostream (nullptr), pb (nullptr)
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187 {
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188 pb = new pager_buf ();
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189 rdbuf (pb);
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190 setf (unitbuf);
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191 }
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192
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193 pager_stream::~pager_stream (void)
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194 {
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195 flush ();
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196 delete pb;
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197 }
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198
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199 std::ostream& pager_stream::stream (void)
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200 {
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201 return *this;
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202 }
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203
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204 void pager_stream::flush_current_contents_to_diary (void)
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205 {
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206 if (pb)
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207 pb->flush_current_contents_to_diary ();
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208 }
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209
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210 void pager_stream::set_diary_skip (void)
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211 {
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212 if (pb)
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213 pb->set_diary_skip ();
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214 }
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215
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216 // Reinitialize the pager buffer to avoid hanging on to large internal
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217 // buffers when they might not be needed. This function should only be
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218 // called when the pager is not in use. For example, just before
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219 // getting command-line input.
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220
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221 void pager_stream::reset (void)
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222 {
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223 delete pb;
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224 pb = new pager_buf ();
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225 rdbuf (pb);
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226 setf (unitbuf);
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227 }
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228
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229 diary_stream::diary_stream (void) : std::ostream (nullptr), db (nullptr)
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230 {
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231 db = new diary_buf ();
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232 rdbuf (db);
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233 setf (unitbuf);
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234 }
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235
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236 diary_stream::~diary_stream (void)
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237 {
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238 flush ();
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239 delete db;
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240 }
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241
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242 std::ostream& diary_stream::stream (void)
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243 {
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244 return *this;
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245 }
1
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246
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247 // Reinitialize the diary buffer to avoid hanging on to large internal
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248 // buffers when they might not be needed. This function should only be
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249 // called when the pager is not in use. For example, just before
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250 // getting command-line input.
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251
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252 void diary_stream::reset (void)
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253 {
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254 delete db;
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255 db = new diary_buf ();
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256 rdbuf (db);
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257 setf (unitbuf);
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258 }
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259
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diff changeset
260 void flush_stdout (void)
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261 {
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262 output_system& output_sys = __get_output_system__ ("flush_stdout");
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263
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diff changeset
264 output_sys.flush_stdout ();
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265 }
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266
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diff changeset
267 output_system::output_system (interpreter& interp)
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268 : m_interpreter (interp), m_pager_stream (), m_diary_stream (),
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269 m_external_pager (nullptr), m_external_diary_file (),
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270 m_diary_file_name ("diary"), m_PAGER (default_pager ()),
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271 m_PAGER_FLAGS (), m_page_output_immediately (false),
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272 m_page_screen_output (false), m_write_to_diary_file (false),
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273 m_really_flush_to_pager (false), m_flushing_output_to_pager (false)
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274 { }
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275
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276 octave_value output_system::PAGER (const octave_value_list& args,
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diff changeset
277 int nargout)
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diff changeset
278 {
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diff changeset
279 return set_internal_variable (m_PAGER, args, nargout, "PAGER", false);
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diff changeset
280 }
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281
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282 octave_value output_system::PAGER_FLAGS (const octave_value_list& args,
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diff changeset
283 int nargout)
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diff changeset
284 {
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diff changeset
285 return set_internal_variable (m_PAGER_FLAGS, args, nargout,
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286 "PAGER_FLAGS", false);
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287 }
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288
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289 octave_value
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290 output_system::page_output_immediately (const octave_value_list& args,
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291 int nargout)
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292 {
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293 return set_internal_variable (m_page_output_immediately, args, nargout,
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294 "page_output_immediately");
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295 }
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296
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297 octave_value
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298 output_system::page_screen_output (const octave_value_list& args,
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299 int nargout)
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300 {
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301 return set_internal_variable (m_page_screen_output, args, nargout,
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302 "page_screen_output");
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303 }
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304
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305 std::string output_system::pager_command (void) const
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306 {
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307 std::string cmd = m_PAGER;
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308
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309 if (! (cmd.empty () || m_PAGER_FLAGS.empty ()))
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310 cmd += ' ' + m_PAGER_FLAGS;
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311
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312 return cmd;
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313 }
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314
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315 void output_system::reset (void)
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316 {
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317 flush_stdout ();
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318
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319 m_pager_stream.reset ();
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320 m_diary_stream.reset ();
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321 }
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322
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323 void output_system::flush_stdout (void)
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324 {
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325 if (! m_flushing_output_to_pager)
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326 {
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327 unwind_protect_var<bool> restore_var1 (m_really_flush_to_pager);
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328 unwind_protect_var<bool> restore_var2 (m_flushing_output_to_pager);
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329
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330 m_really_flush_to_pager = true;
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331 m_flushing_output_to_pager = true;
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49cdc5b183bc [project @ 1996-04-28 11:26:32 by jwe]
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diff changeset
332
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333 std::ostream& pager_ostream = m_pager_stream.stream ();
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diff changeset
334
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diff changeset
335 pager_ostream.flush ();
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9be05ffc288a [project @ 1996-05-15 07:32:58 by jwe]
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diff changeset
336
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337 clear_external_pager ();
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338 }
baf03cdb28b5 move pager and diary classes into octave namespace
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diff changeset
339 }
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340
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diff changeset
341 void output_system::close_diary (void)
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diff changeset
342 {
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diff changeset
343 // Try to flush the current buffer to the diary now, so that things
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344 // like
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345 //
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346 // function foo ()
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347 // diary on;
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348 // ...
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349 // diary off;
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350 // endfunction
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351 //
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diff changeset
352 // will do the right thing.
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353
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diff changeset
354 m_pager_stream.flush_current_contents_to_diary ();
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diff changeset
355
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diff changeset
356 if (m_external_diary_file.is_open ())
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diff changeset
357 {
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diff changeset
358 octave_diary.flush ();
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diff changeset
359 m_external_diary_file.close ();
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diff changeset
360 }
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diff changeset
361 }
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diff changeset
362
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diff changeset
363 void output_system::open_diary (void)
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diff changeset
364 {
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diff changeset
365 close_diary ();
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diff changeset
366
a52e6fb674b1 eliminate some singletons and static & global variables
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diff changeset
367 // If there is pending output in the pager buf, it should not go
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diff changeset
368 // into the diary file.
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diff changeset
369
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diff changeset
370 m_pager_stream.set_diary_skip ();
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diff changeset
371
a52e6fb674b1 eliminate some singletons and static & global variables
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diff changeset
372 m_external_diary_file.open (m_diary_file_name.c_str (), std::ios::app);
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diff changeset
373
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diff changeset
374 if (! m_external_diary_file)
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diff changeset
375 error ("diary: can't open diary file '%s'", m_diary_file_name.c_str ());
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diff changeset
376 }
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
377
25435
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diff changeset
378 bool output_system::sync (const char *buf, int len)
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diff changeset
379 {
29254
11343ca3c125 allow Octave to operate as a server, executing commands from a queue
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diff changeset
380 // FIXME: The following seems to be a bit of a mess.
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diff changeset
381
11343ca3c125 allow Octave to operate as a server, executing commands from a queue
John W. Eaton <jwe@octave.org>
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diff changeset
382 if (m_interpreter.server_mode ()
11343ca3c125 allow Octave to operate as a server, executing commands from a queue
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diff changeset
383 || ! m_interpreter.interactive ()
25435
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diff changeset
384 || application::forced_interactive ()
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diff changeset
385 || m_really_flush_to_pager
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diff changeset
386 || (m_page_screen_output && m_page_output_immediately)
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parents: 25054
diff changeset
387 || ! m_page_screen_output)
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diff changeset
388 {
29254
11343ca3c125 allow Octave to operate as a server, executing commands from a queue
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parents: 28857
diff changeset
389 bool bypass_pager = (m_interpreter.server_mode ()
11343ca3c125 allow Octave to operate as a server, executing commands from a queue
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parents: 28857
diff changeset
390 || ! m_interpreter.interactive ()
25435
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diff changeset
391 || application::forced_interactive ()
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diff changeset
392 || ! m_page_screen_output
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diff changeset
393 || (m_really_flush_to_pager
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parents: 25054
diff changeset
394 && m_page_screen_output
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parents: 25054
diff changeset
395 && ! m_page_output_immediately
a52e6fb674b1 eliminate some singletons and static & global variables
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diff changeset
396 && ! more_than_a_screenful (buf, len)));
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diff changeset
397
a52e6fb674b1 eliminate some singletons and static & global variables
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diff changeset
398 if (len > 0)
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diff changeset
399 {
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parents: 25054
diff changeset
400 do_sync (buf, len, bypass_pager);
3477
4b79cb009dd4 [project @ 2000-01-26 00:55:22 by jwe]
jwe
parents: 3373
diff changeset
401
25435
a52e6fb674b1 eliminate some singletons and static & global variables
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diff changeset
402 return true;
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
403 }
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
404 }
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
405
a52e6fb674b1 eliminate some singletons and static & global variables
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diff changeset
406 return false;
a52e6fb674b1 eliminate some singletons and static & global variables
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parents: 25054
diff changeset
407 }
a52e6fb674b1 eliminate some singletons and static & global variables
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parents: 25054
diff changeset
408
a52e6fb674b1 eliminate some singletons and static & global variables
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parents: 25054
diff changeset
409 void output_system::clear_external_pager (void)
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parents: 25054
diff changeset
410 {
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parents: 25054
diff changeset
411 if (m_external_pager)
a52e6fb674b1 eliminate some singletons and static & global variables
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parents: 25054
diff changeset
412 {
a52e6fb674b1 eliminate some singletons and static & global variables
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parents: 25054
diff changeset
413 child_list& kids = m_interpreter.get_child_list ();
a52e6fb674b1 eliminate some singletons and static & global variables
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parents: 25054
diff changeset
414
a52e6fb674b1 eliminate some singletons and static & global variables
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parents: 25054
diff changeset
415 kids.remove (m_external_pager->pid ());
a52e6fb674b1 eliminate some singletons and static & global variables
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parents: 25054
diff changeset
416
a52e6fb674b1 eliminate some singletons and static & global variables
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parents: 25054
diff changeset
417 delete m_external_pager;
a52e6fb674b1 eliminate some singletons and static & global variables
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parents: 25054
diff changeset
418 m_external_pager = nullptr;
a52e6fb674b1 eliminate some singletons and static & global variables
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parents: 25054
diff changeset
419 }
a52e6fb674b1 eliminate some singletons and static & global variables
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parents: 25054
diff changeset
420 }
3477
4b79cb009dd4 [project @ 2000-01-26 00:55:22 by jwe]
jwe
parents: 3373
diff changeset
421
25435
a52e6fb674b1 eliminate some singletons and static & global variables
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diff changeset
422 void output_system::start_external_pager (void)
a52e6fb674b1 eliminate some singletons and static & global variables
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diff changeset
423 {
a52e6fb674b1 eliminate some singletons and static & global variables
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parents: 25054
diff changeset
424 if (m_external_pager)
a52e6fb674b1 eliminate some singletons and static & global variables
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diff changeset
425 return;
a52e6fb674b1 eliminate some singletons and static & global variables
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parents: 25054
diff changeset
426
a52e6fb674b1 eliminate some singletons and static & global variables
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parents: 25054
diff changeset
427 std::string pgr = pager_command ();
a52e6fb674b1 eliminate some singletons and static & global variables
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parents: 25054
diff changeset
428
a52e6fb674b1 eliminate some singletons and static & global variables
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parents: 25054
diff changeset
429 if (! pgr.empty ())
a52e6fb674b1 eliminate some singletons and static & global variables
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parents: 25054
diff changeset
430 {
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
431 m_external_pager = new oprocstream (pgr.c_str ());
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
432
27102
84ff9953faa1 where possible, eliminate octave:: namespace qualifier inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 26377
diff changeset
433 child_list& kids = m_interpreter.get_child_list ();
25435
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
434
26369
0249ba4c9589 Fix static analyzer detected V668 issues (bug #55347).
Andreas Weber <octave@josoansi.de>
parents: 25460
diff changeset
435 kids.insert (m_external_pager->pid (),
0249ba4c9589 Fix static analyzer detected V668 issues (bug #55347).
Andreas Weber <octave@josoansi.de>
parents: 25460
diff changeset
436 pager_event_handler);
25435
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
437 }
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
438 }
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
439
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
440 void output_system::do_sync (const char *msg, int len, bool bypass_pager)
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
441 {
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
442 if (msg && len > 0)
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
443 {
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
444 if (bypass_pager)
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
445 {
29254
11343ca3c125 allow Octave to operate as a server, executing commands from a queue
John W. Eaton <jwe@octave.org>
parents: 28857
diff changeset
446 if (m_interpreter.server_mode ())
11343ca3c125 allow Octave to operate as a server, executing commands from a queue
John W. Eaton <jwe@octave.org>
parents: 28857
diff changeset
447 {
11343ca3c125 allow Octave to operate as a server, executing commands from a queue
John W. Eaton <jwe@octave.org>
parents: 28857
diff changeset
448 event_manager& evmgr = m_interpreter.get_event_manager ();
11343ca3c125 allow Octave to operate as a server, executing commands from a queue
John W. Eaton <jwe@octave.org>
parents: 28857
diff changeset
449
11343ca3c125 allow Octave to operate as a server, executing commands from a queue
John W. Eaton <jwe@octave.org>
parents: 28857
diff changeset
450 evmgr.interpreter_output (std::string (msg, len));
11343ca3c125 allow Octave to operate as a server, executing commands from a queue
John W. Eaton <jwe@octave.org>
parents: 28857
diff changeset
451 }
11343ca3c125 allow Octave to operate as a server, executing commands from a queue
John W. Eaton <jwe@octave.org>
parents: 28857
diff changeset
452 else
11343ca3c125 allow Octave to operate as a server, executing commands from a queue
John W. Eaton <jwe@octave.org>
parents: 28857
diff changeset
453 {
11343ca3c125 allow Octave to operate as a server, executing commands from a queue
John W. Eaton <jwe@octave.org>
parents: 28857
diff changeset
454 std::cout.write (msg, len);
11343ca3c125 allow Octave to operate as a server, executing commands from a queue
John W. Eaton <jwe@octave.org>
parents: 28857
diff changeset
455 std::cout.flush ();
11343ca3c125 allow Octave to operate as a server, executing commands from a queue
John W. Eaton <jwe@octave.org>
parents: 28857
diff changeset
456 }
25435
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
457 }
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
458 else
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
459 {
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
460 start_external_pager ();
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
461
25435
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
462 if (m_external_pager)
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
463 {
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
464 if (m_external_pager->good ())
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
465 {
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
466 m_external_pager->write (msg, len);
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
467
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
468 m_external_pager->flush ();
581
bc813f5eb025 [project @ 1994-08-07 01:02:15 by jwe]
jwe
parents: 529
diff changeset
469
25435
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
470 #if defined (EPIPE)
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
471 if (errno == EPIPE)
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
472 m_external_pager->setstate (std::ios::failbit);
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
473 #endif
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
474 }
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
475 else
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
476 {
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
477 // FIXME: something is not right with the
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
478 // pager. If it died then we should receive a
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
479 // signal for that. If there is some other problem,
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
480 // then what?
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
481 }
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
482 }
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
483 else
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
484 {
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
485 std::cout.write (msg, len);
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
486 std::cout.flush ();
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
487 }
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
488 }
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
489 }
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
490 }
3756
41404c6f4e69 [project @ 2000-12-15 03:14:44 by jwe]
jwe
parents: 3584
diff changeset
491
25435
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
492 std::ostream& __stdout__ (void)
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
493 {
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
494 output_system& output_sys = __get_output_system__ ("__stdout__");
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
495
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
496 return output_sys.__stdout__ ();
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
497 }
581
bc813f5eb025 [project @ 1994-08-07 01:02:15 by jwe]
jwe
parents: 529
diff changeset
498
25435
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
499 std::ostream& __diary__ (void)
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
500 {
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
501 output_system& output_sys = __get_output_system__ ("__diary__");
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
502
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
503 return output_sys.__diary__ ();
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
504 }
581
bc813f5eb025 [project @ 1994-08-07 01:02:15 by jwe]
jwe
parents: 529
diff changeset
505 }
bc813f5eb025 [project @ 1994-08-07 01:02:15 by jwe]
jwe
parents: 529
diff changeset
506
27444
160930a3e5ee eliminate some calls to global __get_SUBSYSTEM__ functions
John W. Eaton <jwe@octave.org>
parents: 27301
diff changeset
507 DEFMETHOD (diary, interp, args, nargout,
160930a3e5ee eliminate some calls to global __get_SUBSYSTEM__ functions
John W. Eaton <jwe@octave.org>
parents: 27301
diff changeset
508 doc: /* -*- texinfo -*-
21966
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
509 @deftypefn {} {} diary
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
510 @deftypefnx {} {} diary on
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
511 @deftypefnx {} {} diary off
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
512 @deftypefnx {} {} diary @var{filename}
22820
c97b26662858 Add Octave-only query mode for diary command to find status.
Rik <rik@octave.org>
parents: 22755
diff changeset
513 @deftypefnx {} {[@var{status}, @var{diaryfile}] =} diary
21966
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
514 Record a list of all commands @emph{and} the output they produce, mixed
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
515 together just as they appear on the terminal.
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
516
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
517 Valid options are:
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
518
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
519 @table @asis
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
520 @item on
22820
c97b26662858 Add Octave-only query mode for diary command to find status.
Rik <rik@octave.org>
parents: 22755
diff changeset
521 Start recording a session in a file called @file{diary} in the current working
c97b26662858 Add Octave-only query mode for diary command to find status.
Rik <rik@octave.org>
parents: 22755
diff changeset
522 directory.
21966
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
523
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
524 @item off
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
525 Stop recording the session in the diary file.
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
526
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
527 @item @var{filename}
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
528 Record the session in the file named @var{filename}.
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
529 @end table
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
530
22820
c97b26662858 Add Octave-only query mode for diary command to find status.
Rik <rik@octave.org>
parents: 22755
diff changeset
531 With no input or output arguments, @code{diary} toggles the current diary
c97b26662858 Add Octave-only query mode for diary command to find status.
Rik <rik@octave.org>
parents: 22755
diff changeset
532 state.
c97b26662858 Add Octave-only query mode for diary command to find status.
Rik <rik@octave.org>
parents: 22755
diff changeset
533
c97b26662858 Add Octave-only query mode for diary command to find status.
Rik <rik@octave.org>
parents: 22755
diff changeset
534 If output arguments are requested, @code{diary} ignores inputs and returns
c97b26662858 Add Octave-only query mode for diary command to find status.
Rik <rik@octave.org>
parents: 22755
diff changeset
535 the current status. The boolean @var{status} indicates whether recording is on
c97b26662858 Add Octave-only query mode for diary command to find status.
Rik <rik@octave.org>
parents: 22755
diff changeset
536 or off, and @var{diaryfile} is the name of the file where the session is
22910
23847979b91e maint: Strip trailing whitespace from source files.
John W. Eaton <jwe@octave.org>
parents: 22820
diff changeset
537 stored.
21966
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
538 @seealso{history, evalc}
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
539 @end deftypefn */)
581
bc813f5eb025 [project @ 1994-08-07 01:02:15 by jwe]
jwe
parents: 529
diff changeset
540 {
20817
3d551b2ae928 Use variable name nargin consistently in C++ code.
Rik <rik@octave.org>
parents: 20801
diff changeset
541 int nargin = args.length ();
1755
3a9462b655f1 [project @ 1996-01-22 04:47:22 by jwe]
jwe
parents: 1742
diff changeset
542
20817
3d551b2ae928 Use variable name nargin consistently in C++ code.
Rik <rik@octave.org>
parents: 20801
diff changeset
543 if (nargin > 1)
20801
a542a9bf177e eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
544 print_usage ();
a542a9bf177e eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
545
27444
160930a3e5ee eliminate some calls to global __get_SUBSYSTEM__ functions
John W. Eaton <jwe@octave.org>
parents: 27301
diff changeset
546 octave::output_system& output_sys = interp.get_output_system ();
1306
f92615001614 [project @ 1995-05-15 19:54:29 by jwe]
jwe
parents: 1192
diff changeset
547
22820
c97b26662858 Add Octave-only query mode for diary command to find status.
Rik <rik@octave.org>
parents: 22755
diff changeset
548 if (nargout > 0)
c97b26662858 Add Octave-only query mode for diary command to find status.
Rik <rik@octave.org>
parents: 22755
diff changeset
549 {
c97b26662858 Add Octave-only query mode for diary command to find status.
Rik <rik@octave.org>
parents: 22755
diff changeset
550 // Querying diary variables
c97b26662858 Add Octave-only query mode for diary command to find status.
Rik <rik@octave.org>
parents: 22755
diff changeset
551 if (nargout == 1)
25435
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
552 return ovl (output_sys.write_to_diary_file ());
22820
c97b26662858 Add Octave-only query mode for diary command to find status.
Rik <rik@octave.org>
parents: 22755
diff changeset
553 else
25435
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
554 return ovl (output_sys.write_to_diary_file (),
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
555 output_sys.diary_file_name ());
22820
c97b26662858 Add Octave-only query mode for diary command to find status.
Rik <rik@octave.org>
parents: 22755
diff changeset
556 }
c97b26662858 Add Octave-only query mode for diary command to find status.
Rik <rik@octave.org>
parents: 22755
diff changeset
557
20817
3d551b2ae928 Use variable name nargin consistently in C++ code.
Rik <rik@octave.org>
parents: 20801
diff changeset
558 if (nargin == 0)
581
bc813f5eb025 [project @ 1994-08-07 01:02:15 by jwe]
jwe
parents: 529
diff changeset
559 {
25435
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
560 output_sys.write_to_diary_file (! output_sys.write_to_diary_file ());
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
561 output_sys.open_diary ();
20801
a542a9bf177e eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
562 }
a542a9bf177e eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
563 else
a542a9bf177e eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
564 {
20817
3d551b2ae928 Use variable name nargin consistently in C++ code.
Rik <rik@octave.org>
parents: 20801
diff changeset
565 std::string arg = args(0).xstring_value ("diary: argument must be a string");
1755
3a9462b655f1 [project @ 1996-01-22 04:47:22 by jwe]
jwe
parents: 1742
diff changeset
566
20801
a542a9bf177e eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
567 if (arg == "on")
a542a9bf177e eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
568 {
25435
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
569 output_sys.write_to_diary_file (true);
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
570 output_sys.open_diary ();
20801
a542a9bf177e eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
571 }
a542a9bf177e eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
572 else if (arg == "off")
a542a9bf177e eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
573 {
25435
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
574 output_sys.close_diary ();
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
575 output_sys.write_to_diary_file (false);
20801
a542a9bf177e eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
576 }
a542a9bf177e eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
577 else
a542a9bf177e eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
578 {
25435
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
579 output_sys.diary_file_name (arg);
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
580 output_sys.write_to_diary_file (true);
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
581 output_sys.open_diary ();
20801
a542a9bf177e eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
582 }
581
bc813f5eb025 [project @ 1994-08-07 01:02:15 by jwe]
jwe
parents: 529
diff changeset
583 }
20820
eed8ec05f1c8 always return value from DEFUN functions
John W. Eaton <jwe@octave.org>
parents: 20817
diff changeset
584
20941
a4f5da7c5463 maint: Replace "octave_value_list ()" with "ovl ()".
Rik <rik@octave.org>
parents: 20940
diff changeset
585 return ovl ();
581
bc813f5eb025 [project @ 1994-08-07 01:02:15 by jwe]
jwe
parents: 529
diff changeset
586 }
bc813f5eb025 [project @ 1994-08-07 01:02:15 by jwe]
jwe
parents: 529
diff changeset
587
25435
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
588 DEFMETHOD (more, interp, args, ,
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
589 doc: /* -*- texinfo -*-
21966
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
590 @deftypefn {} {} more
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
591 @deftypefnx {} {} more on
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
592 @deftypefnx {} {} more off
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
593 Turn output pagination on or off.
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
594
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
595 Without an argument, @code{more} toggles the current state.
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
596
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
597 The current state can be determined via @code{page_screen_output}.
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
598 @seealso{page_screen_output, page_output_immediately, PAGER, PAGER_FLAGS}
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
599 @end deftypefn */)
1409
e282214c41a5 [project @ 1995-09-15 06:41:08 by jwe]
jwe
parents: 1358
diff changeset
600 {
20897
9aad16a799c9 maint: Replace argc variable name with nargin in C++ code.
Rik <rik@octave.org>
parents: 20853
diff changeset
601 int nargin = args.length ();
1409
e282214c41a5 [project @ 1995-09-15 06:41:08 by jwe]
jwe
parents: 1358
diff changeset
602
20897
9aad16a799c9 maint: Replace argc variable name with nargin in C++ code.
Rik <rik@octave.org>
parents: 20853
diff changeset
603 if (nargin > 1)
20801
a542a9bf177e eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
604 print_usage ();
a542a9bf177e eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
605
25435
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
606 octave::output_system& output_sys = interp.get_output_system ();
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
607
20897
9aad16a799c9 maint: Replace argc variable name with nargin in C++ code.
Rik <rik@octave.org>
parents: 20853
diff changeset
608 if (nargin > 0)
1409
e282214c41a5 [project @ 1995-09-15 06:41:08 by jwe]
jwe
parents: 1358
diff changeset
609 {
23803
90689bdbe048 Use C++11 raw string literals to avoid escaping double quotes.
Rik <rik@octave.org>
parents: 23795
diff changeset
610 std::string arg = args(0).xstring_value (R"(more: argument must be string "on" or "off")");
1409
e282214c41a5 [project @ 1995-09-15 06:41:08 by jwe]
jwe
parents: 1358
diff changeset
611
1755
3a9462b655f1 [project @ 1996-01-22 04:47:22 by jwe]
jwe
parents: 1742
diff changeset
612 if (arg == "on")
25435
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
613 output_sys.page_screen_output (true);
1755
3a9462b655f1 [project @ 1996-01-22 04:47:22 by jwe]
jwe
parents: 1742
diff changeset
614 else if (arg == "off")
25435
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
615 output_sys.page_screen_output (false);
1409
e282214c41a5 [project @ 1995-09-15 06:41:08 by jwe]
jwe
parents: 1358
diff changeset
616 else
23803
90689bdbe048 Use C++11 raw string literals to avoid escaping double quotes.
Rik <rik@octave.org>
parents: 23795
diff changeset
617 error (R"(more: argument must be "on" or "off")");
1409
e282214c41a5 [project @ 1995-09-15 06:41:08 by jwe]
jwe
parents: 1358
diff changeset
618 }
20801
a542a9bf177e eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20555
diff changeset
619 else
25435
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
620 output_sys.page_screen_output (! output_sys.page_screen_output ());
1409
e282214c41a5 [project @ 1995-09-15 06:41:08 by jwe]
jwe
parents: 1358
diff changeset
621
20941
a4f5da7c5463 maint: Replace "octave_value_list ()" with "ovl ()".
Rik <rik@octave.org>
parents: 20940
diff changeset
622 return ovl ();
1409
e282214c41a5 [project @ 1995-09-15 06:41:08 by jwe]
jwe
parents: 1358
diff changeset
623 }
e282214c41a5 [project @ 1995-09-15 06:41:08 by jwe]
jwe
parents: 1358
diff changeset
624
27159
25d0c4b5a3aa allow terminal_size function to set screen size
John W. Eaton <jwe@octave.org>
parents: 27102
diff changeset
625 DEFUN (terminal_size, args, ,
21966
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
626 doc: /* -*- texinfo -*-
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
627 @deftypefn {} {} terminal_size ()
27159
25d0c4b5a3aa allow terminal_size function to set screen size
John W. Eaton <jwe@octave.org>
parents: 27102
diff changeset
628 Query or set the size of the terminal window. If called with no
25d0c4b5a3aa allow terminal_size function to set screen size
John W. Eaton <jwe@octave.org>
parents: 27102
diff changeset
629 arguments, return a two-element row vector containing the current size
25d0c4b5a3aa allow terminal_size function to set screen size
John W. Eaton <jwe@octave.org>
parents: 27102
diff changeset
630 of the terminal window in characters (rows and columns). If called with
25d0c4b5a3aa allow terminal_size function to set screen size
John W. Eaton <jwe@octave.org>
parents: 27102
diff changeset
631 a two-element vector of integer values, set the terminal size and return
25d0c4b5a3aa allow terminal_size function to set screen size
John W. Eaton <jwe@octave.org>
parents: 27102
diff changeset
632 the previous setting. Setting the size manually should not be needed
25d0c4b5a3aa allow terminal_size function to set screen size
John W. Eaton <jwe@octave.org>
parents: 27102
diff changeset
633 when using readline for command-line editing.
21966
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
634 @seealso{list_in_columns}
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
635 @end deftypefn */)
5673
0dc67016832b [project @ 2006-03-16 03:08:58 by jwe]
jwe
parents: 5307
diff changeset
636 {
27159
25d0c4b5a3aa allow terminal_size function to set screen size
John W. Eaton <jwe@octave.org>
parents: 27102
diff changeset
637 int nargin = args.length ();
25d0c4b5a3aa allow terminal_size function to set screen size
John W. Eaton <jwe@octave.org>
parents: 27102
diff changeset
638
25d0c4b5a3aa allow terminal_size function to set screen size
John W. Eaton <jwe@octave.org>
parents: 27102
diff changeset
639 if (nargin > 1)
25d0c4b5a3aa allow terminal_size function to set screen size
John W. Eaton <jwe@octave.org>
parents: 27102
diff changeset
640 print_usage ();
25d0c4b5a3aa allow terminal_size function to set screen size
John W. Eaton <jwe@octave.org>
parents: 27102
diff changeset
641
5673
0dc67016832b [project @ 2006-03-16 03:08:58 by jwe]
jwe
parents: 5307
diff changeset
642 RowVector size (2, 0.0);
0dc67016832b [project @ 2006-03-16 03:08:58 by jwe]
jwe
parents: 5307
diff changeset
643
21748
176536b15d68 use namespace for command_editor and command_history classes
John W. Eaton <jwe@octave.org>
parents: 21743
diff changeset
644 size(0) = octave::command_editor::terminal_rows ();
176536b15d68 use namespace for command_editor and command_history classes
John W. Eaton <jwe@octave.org>
parents: 21743
diff changeset
645 size(1) = octave::command_editor::terminal_cols ();
5673
0dc67016832b [project @ 2006-03-16 03:08:58 by jwe]
jwe
parents: 5307
diff changeset
646
27159
25d0c4b5a3aa allow terminal_size function to set screen size
John W. Eaton <jwe@octave.org>
parents: 27102
diff changeset
647 if (nargin == 1)
25d0c4b5a3aa allow terminal_size function to set screen size
John W. Eaton <jwe@octave.org>
parents: 27102
diff changeset
648 {
25d0c4b5a3aa allow terminal_size function to set screen size
John W. Eaton <jwe@octave.org>
parents: 27102
diff changeset
649 Matrix m = args(0).xmatrix_value ("argument must be a 2-element array");
25d0c4b5a3aa allow terminal_size function to set screen size
John W. Eaton <jwe@octave.org>
parents: 27102
diff changeset
650
25d0c4b5a3aa allow terminal_size function to set screen size
John W. Eaton <jwe@octave.org>
parents: 27102
diff changeset
651 if (m.numel () != 2)
25d0c4b5a3aa allow terminal_size function to set screen size
John W. Eaton <jwe@octave.org>
parents: 27102
diff changeset
652 error ("terminal_size: argument must be a 2-element array");
25d0c4b5a3aa allow terminal_size function to set screen size
John W. Eaton <jwe@octave.org>
parents: 27102
diff changeset
653
25d0c4b5a3aa allow terminal_size function to set screen size
John W. Eaton <jwe@octave.org>
parents: 27102
diff changeset
654 int rows = octave::math::x_nint (m(0));
25d0c4b5a3aa allow terminal_size function to set screen size
John W. Eaton <jwe@octave.org>
parents: 27102
diff changeset
655 int cols = octave::math::x_nint (m(1));
25d0c4b5a3aa allow terminal_size function to set screen size
John W. Eaton <jwe@octave.org>
parents: 27102
diff changeset
656
25d0c4b5a3aa allow terminal_size function to set screen size
John W. Eaton <jwe@octave.org>
parents: 27102
diff changeset
657 if (rows <= 0 || cols <= 0)
25d0c4b5a3aa allow terminal_size function to set screen size
John W. Eaton <jwe@octave.org>
parents: 27102
diff changeset
658 error ("terminal_size: rows and columns must be positive integers");
25d0c4b5a3aa allow terminal_size function to set screen size
John W. Eaton <jwe@octave.org>
parents: 27102
diff changeset
659
25d0c4b5a3aa allow terminal_size function to set screen size
John W. Eaton <jwe@octave.org>
parents: 27102
diff changeset
660 octave::command_editor::set_screen_size (rows, cols);
25d0c4b5a3aa allow terminal_size function to set screen size
John W. Eaton <jwe@octave.org>
parents: 27102
diff changeset
661 }
25d0c4b5a3aa allow terminal_size function to set screen size
John W. Eaton <jwe@octave.org>
parents: 27102
diff changeset
662
21127
df7891224709 maint: Use "return ovl (...)" in DEFUN macros.
Rik <rik@octave.org>
parents: 21100
diff changeset
663 return ovl (size);
5673
0dc67016832b [project @ 2006-03-16 03:08:58 by jwe]
jwe
parents: 5307
diff changeset
664 }
0dc67016832b [project @ 2006-03-16 03:08:58 by jwe]
jwe
parents: 5307
diff changeset
665
25435
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
666 DEFMETHOD (page_output_immediately, interp, args, nargout,
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
667 doc: /* -*- texinfo -*-
21966
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
668 @deftypefn {} {@var{val} =} page_output_immediately ()
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
669 @deftypefnx {} {@var{old_val} =} page_output_immediately (@var{new_val})
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
670 @deftypefnx {} {} page_output_immediately (@var{new_val}, "local")
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
671 Query or set the internal variable that controls whether Octave sends
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
672 output to the pager as soon as it is available.
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
673
27579
f6417502613a doc: expand page_output_immediately doc string, mention page_screen_output
Mike Miller <mtmiller@octave.org>
parents: 26376
diff changeset
674 When the value is @code{false}, Octave buffers its output and waits until just
f6417502613a doc: expand page_output_immediately doc string, mention page_screen_output
Mike Miller <mtmiller@octave.org>
parents: 26376
diff changeset
675 before the prompt is printed to flush it to the pager. This is the default.
f6417502613a doc: expand page_output_immediately doc string, mention page_screen_output
Mike Miller <mtmiller@octave.org>
parents: 26376
diff changeset
676
f6417502613a doc: expand page_output_immediately doc string, mention page_screen_output
Mike Miller <mtmiller@octave.org>
parents: 26376
diff changeset
677 When @code{page_screen_output} is @code{false}, this variable has no effect.
21966
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
678
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
679 When called from inside a function with the @qcode{"local"} option, the
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
680 variable is changed locally for the function and any subroutines it calls.
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
681 The original variable value is restored when exiting the function.
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
682 @seealso{page_screen_output, more, PAGER, PAGER_FLAGS}
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
683 @end deftypefn */)
2097
19ba1a7dcfbb [project @ 1996-04-28 10:40:15 by jwe]
jwe
parents: 2093
diff changeset
684 {
25435
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
685 octave::output_system& output_sys = interp.get_output_system ();
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
686
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
687 return output_sys.page_output_immediately (args, nargout);
2164
269db7306980 [project @ 1996-05-13 13:05:24 by jwe]
jwe
parents: 2146
diff changeset
688 }
269db7306980 [project @ 1996-05-13 13:05:24 by jwe]
jwe
parents: 2146
diff changeset
689
25435
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
690 DEFMETHOD (page_screen_output, interp, args, nargout,
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
691 doc: /* -*- texinfo -*-
21966
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
692 @deftypefn {} {@var{val} =} page_screen_output ()
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
693 @deftypefnx {} {@var{old_val} =} page_screen_output (@var{new_val})
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
694 @deftypefnx {} {} page_screen_output (@var{new_val}, "local")
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
695 Query or set the internal variable that controls whether output intended
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
696 for the terminal window that is longer than one page is sent through a
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
697 pager.
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
698
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
699 This allows you to view one screenful at a time. Some pagers
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
700 (such as @code{less}---see @ref{Installation}) are also capable of moving
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
701 backward on the output.
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
702
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
703 When called from inside a function with the @qcode{"local"} option, the
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
704 variable is changed locally for the function and any subroutines it calls.
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
705 The original variable value is restored when exiting the function.
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
706 @seealso{more, page_output_immediately, PAGER, PAGER_FLAGS}
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
707 @end deftypefn */)
2164
269db7306980 [project @ 1996-05-13 13:05:24 by jwe]
jwe
parents: 2146
diff changeset
708 {
25435
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
709 octave::output_system& output_sys = interp.get_output_system ();
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710
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parents: 25054
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711 return output_sys.page_screen_output (args, nargout);
2164
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jwe
parents: 2146
diff changeset
712 }
269db7306980 [project @ 1996-05-13 13:05:24 by jwe]
jwe
parents: 2146
diff changeset
713
25435
a52e6fb674b1 eliminate some singletons and static & global variables
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parents: 25054
diff changeset
714 DEFMETHOD (PAGER, interp, args, nargout,
a52e6fb674b1 eliminate some singletons and static & global variables
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parents: 25054
diff changeset
715 doc: /* -*- texinfo -*-
21966
112b20240c87 move docstrings in C++ files out of C strings and into comments
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parents: 21921
diff changeset
716 @deftypefn {} {@var{val} =} PAGER ()
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
717 @deftypefnx {} {@var{old_val} =} PAGER (@var{new_val})
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parents: 21921
diff changeset
718 @deftypefnx {} {} PAGER (@var{new_val}, "local")
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parents: 21921
diff changeset
719 Query or set the internal variable that specifies the program to use
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
720 to display terminal output on your system.
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
721
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
722 The default value is normally @qcode{"less"}, @qcode{"more"}, or
112b20240c87 move docstrings in C++ files out of C strings and into comments
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parents: 21921
diff changeset
723 @qcode{"pg"}, depending on what programs are installed on your system.
112b20240c87 move docstrings in C++ files out of C strings and into comments
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parents: 21921
diff changeset
724 @xref{Installation}.
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
725
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
726 When called from inside a function with the @qcode{"local"} option, the
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
727 variable is changed locally for the function and any subroutines it calls.
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
728 The original variable value is restored when exiting the function.
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
729 @seealso{PAGER_FLAGS, page_output_immediately, more, page_screen_output}
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parents: 21921
diff changeset
730 @end deftypefn */)
5794
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jwe
parents: 5778
diff changeset
731 {
25435
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
732 octave::output_system& output_sys = interp.get_output_system ();
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parents: 25054
diff changeset
733
a52e6fb674b1 eliminate some singletons and static & global variables
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parents: 25054
diff changeset
734 return output_sys.PAGER (args, nargout);
2097
19ba1a7dcfbb [project @ 1996-04-28 10:40:15 by jwe]
jwe
parents: 2093
diff changeset
735 }
19ba1a7dcfbb [project @ 1996-04-28 10:40:15 by jwe]
jwe
parents: 2093
diff changeset
736
25435
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
737 DEFMETHOD (PAGER_FLAGS, interp, args, nargout,
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
738 doc: /* -*- texinfo -*-
21966
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
739 @deftypefn {} {@var{val} =} PAGER_FLAGS ()
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
740 @deftypefnx {} {@var{old_val} =} PAGER_FLAGS (@var{new_val})
112b20240c87 move docstrings in C++ files out of C strings and into comments
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parents: 21921
diff changeset
741 @deftypefnx {} {} PAGER_FLAGS (@var{new_val}, "local")
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
742 Query or set the internal variable that specifies the options to pass
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
743 to the pager.
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
744
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
745 When called from inside a function with the @qcode{"local"} option, the
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
746 variable is changed locally for the function and any subroutines it calls.
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
747 The original variable value is restored when exiting the function.
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
748 @seealso{PAGER, more, page_screen_output, page_output_immediately}
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21921
diff changeset
749 @end deftypefn */)
6144
e8868fde0fc5 [project @ 2006-11-07 20:52:18 by jwe]
jwe
parents: 5823
diff changeset
750 {
25435
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
751 octave::output_system& output_sys = interp.get_output_system ();
a52e6fb674b1 eliminate some singletons and static & global variables
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parents: 25054
diff changeset
752
a52e6fb674b1 eliminate some singletons and static & global variables
John W. Eaton <jwe@octave.org>
parents: 25054
diff changeset
753 return output_sys.PAGER_FLAGS (args, nargout);
6144
e8868fde0fc5 [project @ 2006-11-07 20:52:18 by jwe]
jwe
parents: 5823
diff changeset
754 }