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1
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1 // utils.cc -*- C++ -*- |
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2 /* |
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3 |
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296
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4 Copyright (C) 1992, 1993, 1994 John W. Eaton |
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5 |
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6 This file is part of Octave. |
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7 |
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8 Octave is free software; you can redistribute it and/or modify it |
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9 under the terms of the GNU General Public License as published by the |
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10 Free Software Foundation; either version 2, or (at your option) any |
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11 later version. |
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12 |
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13 Octave is distributed in the hope that it will be useful, but WITHOUT |
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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16 for more details. |
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17 |
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18 You should have received a copy of the GNU General Public License |
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19 along with Octave; see the file COPYING. If not, write to the Free |
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20 Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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21 |
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22 */ |
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23 |
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24 /* |
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25 |
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400
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26 The 12 functions listed below were adapted from a similar functions |
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27 from GNU Bash, the Bourne Again SHell, copyright (C) 1987, 1989, 1991 |
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28 Free Software Foundation, Inc. |
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29 |
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30 polite_directory_format absolute_pathname |
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31 absolute_program base_pathname |
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32 read_octal sub_append_string |
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33 decode_prompt_string pathname_backup |
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34 make_absolute get_working_directory |
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320
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35 change_to_directory gethostname |
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36 |
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37 The 2 functions listed below were adapted from a similar functions |
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38 from GCC, the GNU C compiler, copyright (C) 1987, 1989, 1992, 1993, |
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39 1994 Free Software Foundation, Inc. |
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40 |
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41 choose_temp_base_try octave_tmp_file_name |
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42 |
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1
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43 */ |
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44 |
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240
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45 #ifdef HAVE_CONFIG_H |
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46 #include "config.h" |
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1
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47 #endif |
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48 |
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49 #include <sys/types.h> |
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50 #ifdef HAVE_UNISTD_H |
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51 #include <unistd.h> |
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52 #endif |
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53 #include <sys/param.h> |
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54 #include <string.h> |
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55 #include <limits.h> |
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56 #include <iostream.h> |
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57 #include <strstream.h> |
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58 #include <fstream.h> |
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367
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59 |
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526
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60 #include <Complex.h> |
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287
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61 |
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62 extern "C" |
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63 { |
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636
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64 #include <setjmp.h> |
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65 |
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66 #ifndef HAVE_STRNCASECMP |
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287
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67 extern int strncasecmp (const char*, const char*, size_t); |
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636
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68 #endif |
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287
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69 } |
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70 |
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138
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71 extern "C" |
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72 { |
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73 #if defined (HAVE_TERMIOS_H) |
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74 #include <termios.h> |
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75 #elif defined (HAVE_TERMIO_H) |
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1
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76 #include <termio.h> |
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138
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77 #elif defined (HAVE_SGTTY_H) |
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1
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78 #include <sgtty.h> |
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79 #else |
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80 LOSE! LOSE! |
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81 #endif |
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82 |
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581
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83 #include <readline/tilde.h> |
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1
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84 } |
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85 |
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526
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86 // This mess suggested by the autoconf manual. |
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87 // unistd.h defines _POSIX_VERSION on POSIX.1 systems. |
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88 #if defined(DIRENT) || defined(_POSIX_VERSION) |
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89 #include <dirent.h> |
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90 #define NLENGTH(dirent) (strlen((dirent)->d_name)) |
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91 #else /* not (DIRENT or _POSIX_VERSION) */ |
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92 #define dirent direct |
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93 #define NLENGTH(dirent) ((dirent)->d_namlen) |
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94 #ifdef SYSNDIR |
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95 #include <sys/ndir.h> |
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96 #endif /* SYSNDIR */ |
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97 #ifdef SYSDIR |
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98 #include <sys/dir.h> |
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99 #endif /* SYSDIR */ |
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100 #ifdef NDIR |
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101 #include <ndir.h> |
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102 #endif /* NDIR */ |
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103 #endif /* not (DIRENT or _POSIX_VERSION) */ |
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104 |
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1
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105 #include "SLStack.h" |
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106 |
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107 #include "procstream.h" |
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108 #include "user-prefs.h" |
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109 #include "variables.h" |
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526
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110 #include "dirfns.h" |
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1
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111 #include "error.h" |
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628
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112 #include "gripes.h" |
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526
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113 #include "pager.h" |
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1
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114 #include "utils.h" |
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175
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115 #include "input.h" |
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1
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116 #include "octave.h" |
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526
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117 #include "oct-obj.h" |
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1
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118 #include "mappers.h" |
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119 #include "version.h" |
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120 #include "tree-const.h" |
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121 #include "unwind-prot.h" |
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122 #include "octave-hist.h" |
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123 |
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124 // Top level context (?) |
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125 extern jmp_buf toplevel; |
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126 |
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581
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127 // Save a string. |
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128 |
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1
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129 char * |
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130 strsave (const char *s) |
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131 { |
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526
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132 if (! s) |
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133 return 0; |
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1
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134 |
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135 int len = strlen (s); |
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136 char *tmp = new char [len+1]; |
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137 tmp = strcpy (tmp, s); |
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138 return tmp; |
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139 } |
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140 |
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581
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141 // Concatenate two strings. |
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142 |
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143 char * |
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144 strconcat (const char *s, const char *t) |
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145 { |
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146 int len = strlen (s) + strlen (t); |
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147 char *tmp = new char [len+1]; |
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148 strcpy (tmp, s); |
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149 return strcat (tmp, t); |
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150 } |
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151 |
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581
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152 // Throw away input until a given character is read. |
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153 |
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1
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154 void |
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155 discard_until (istream& stream, char character) |
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156 { |
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157 int c; |
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158 for (;;) |
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159 { |
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160 stream >> c; |
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161 if (c == EOF || c == character) |
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162 break; |
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163 } |
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164 if (c != EOF) |
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165 stream.putback ((char) c); |
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166 } |
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167 |
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607
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168 #if 0 |
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169 |
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170 // XXX UNTESTED XXX |
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171 |
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172 // Read input until a given character is read. Returns characters |
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173 // read in a new string that must be freed by the caller. |
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174 |
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175 char * |
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176 read_until (istream& stream, char character) |
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177 { |
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178 int grow_size = 8; |
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179 int limit = grow_size; |
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180 char *buf = new char [limit]; |
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181 char *bp = buf; |
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182 |
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183 get_more: |
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184 is.getline (bp, limit, character); |
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185 |
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186 if (is.gcount () == 0) |
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187 { |
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188 delete [] buf; |
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189 return 0; |
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190 } |
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191 |
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192 if (is.gcount () == limit && buf[limit-1] != '\0') |
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193 { |
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194 char *tmp = new char [limit + grow_size]; |
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195 strcpy (tmp, buf); |
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196 delete [] buf; |
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197 buf = tmp; |
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198 bp = tmp + limit - 1; |
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199 limit += grow_size; |
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200 grow_size *= 2; |
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201 goto get_more; |
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202 } |
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203 |
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204 return buf; |
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205 } |
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206 #endif |
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207 |
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643
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208 // Compute a string to use as the base of all temporary file names. |
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209 |
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210 static char * |
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211 choose_temp_base_try (char *try_me, char *base) |
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212 { |
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213 char *retval; |
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214 |
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215 if (base) |
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216 retval = base; |
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217 else if (! try_me) |
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218 retval = 0; |
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219 else if (access (try_me, R_OK | W_OK) != 0) |
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220 retval = 0; |
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221 else |
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222 retval = try_me; |
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223 |
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224 return retval; |
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225 } |
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226 |
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227 // Get a temporary file name. The prefix comes from the envvar |
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228 // TMPDIR, or TMP, or TEMP if defined; otherwise, from the P_tmpdir |
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229 // macro if that is defined; otherwise, it is /usr/tmp or /tmp, or ./. |
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230 // |
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231 // If nothing works, panic. |
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232 |
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233 char * |
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234 octave_tmp_file_name (void) |
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235 { |
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236 #if defined (HAVE_MKTEMP) |
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237 static char *temp_file_name = 0; |
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238 |
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239 char *base = 0; |
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240 int len; |
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241 |
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242 base = choose_temp_base_try (getenv ("TMPDIR"), base); |
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243 base = choose_temp_base_try (getenv ("TMP"), base); |
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244 base = choose_temp_base_try (getenv ("TEMP"), base); |
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245 |
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246 #ifdef P_tmpdir |
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247 base = choose_temp_base_try (P_tmpdir, base); |
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248 #endif |
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249 |
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250 base = choose_temp_base_try ("/usr/tmp", base); |
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251 base = choose_temp_base_try ("/tmp", base); |
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252 |
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253 // If all else fails, use the current directory! |
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254 |
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255 if (base == (char *)0) |
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256 base = "./"; |
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257 |
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258 len = strlen (base); |
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259 |
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260 delete [] temp_file_name; |
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261 |
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262 temp_file_name = new char [len + sizeof("/oct-XXXXXX") + 1]; |
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263 |
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264 strcpy (temp_file_name, base); |
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265 |
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266 if (len > 0 && temp_file_name[len-1] != '/') |
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267 temp_file_name[len++] = '/'; |
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268 |
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269 strcpy (temp_file_name + len, "oct-XXXXXX"); |
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270 |
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271 mktemp (temp_file_name); |
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272 |
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273 if (! strlen (temp_file_name)) |
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274 panic ("unable to find directory for temporary files!"); |
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275 |
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276 return temp_file_name; |
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277 #else |
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278 return tmpnam (0); |
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279 #endif |
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280 } |
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281 |
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1
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282 char ** |
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283 pathstring_to_vector (char *pathstring) |
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284 { |
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526
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285 static char **path = 0; |
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1
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286 |
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526
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287 if (pathstring) |
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1
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288 { |
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289 int nelem = 0; |
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240
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290 char *tmp_path = strsave (pathstring); |
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291 if (*tmp_path != '\0') |
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1
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292 { |
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293 nelem++; |
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240
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294 char *ptr = tmp_path; |
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1
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295 while (*ptr != '\0') |
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296 { |
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297 if (*ptr == ':') |
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298 nelem++; |
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299 ptr++; |
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300 } |
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301 } |
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302 |
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240
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303 char **foo = path; |
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304 while (foo && *foo) |
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244
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305 delete [] *foo++; |
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1
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306 delete [] path; |
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244
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307 |
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1
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308 path = new char * [nelem+1]; |
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526
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309 path[nelem] = 0; |
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1
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310 |
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311 int i = 0; |
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240
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312 char *ptr = tmp_path; |
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1
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313 while (i < nelem) |
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314 { |
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315 char *end = strchr (ptr, ':'); |
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526
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316 if (end) |
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1
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317 *end = '\0'; |
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318 char *result = tilde_expand (ptr); |
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319 path[i] = strsave (result); |
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320 free (result); |
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321 ptr = end + 1; |
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322 i++; |
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323 } |
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324 |
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240
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325 delete [] tmp_path; |
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1
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326 } |
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327 |
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328 return path; |
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329 } |
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330 |
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581
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331 // Return to the main command loop in octave.cc. |
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332 |
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189
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333 void |
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1
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334 jump_to_top_level (void) |
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335 { |
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336 run_all_unwind_protects (); |
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337 |
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338 longjmp (toplevel, 1); |
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339 } |
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340 |
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341 int |
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526
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342 almost_match (const char *std, const char *s, int min_match_len, |
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343 int case_sens) |
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1
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344 { |
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345 int stdlen = strlen (std); |
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346 int slen = strlen (s); |
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347 |
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348 return (slen <= stdlen |
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349 && slen >= min_match_len |
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287
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350 && (case_sens |
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351 ? (strncmp (std, s, slen) == 0) |
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352 : (strncasecmp (std, s, slen) == 0))); |
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353 } |
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354 |
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581
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355 // Ugh. |
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356 |
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287
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357 int |
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358 keyword_almost_match (const char **std, int *min_len, const char *s, |
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359 int min_toks_to_match, int max_toks) |
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360 { |
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361 int status = 0; |
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362 int tok_count = 0; |
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363 int toks_matched = 0; |
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364 |
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526
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365 if (! s || *s == '\0' || max_toks < 1) |
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287
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366 return status; |
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367 |
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368 char *kw = strsave (s); |
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369 |
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370 char *t = kw; |
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371 while (*t != '\0') |
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372 { |
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373 if (*t == '\t') |
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374 *t = ' '; |
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375 t++; |
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376 } |
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377 |
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378 char *beg = kw; |
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379 while (*beg == ' ') |
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380 beg++; |
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381 |
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382 if (*beg == '\0') |
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383 return status; |
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384 |
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385 |
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386 char **to_match = new char * [max_toks + 1]; |
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526
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387 const char **s1 = std; |
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287
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388 char **s2 = to_match; |
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389 |
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526
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390 if (! s1 || ! s2) |
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287
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391 goto done; |
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392 |
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393 s2[tok_count] = beg; |
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394 char *end; |
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526
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395 while ((end = strchr (beg, ' ')) != 0) |
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287
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396 { |
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397 *end = '\0'; |
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398 beg = end + 1; |
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399 |
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400 while (*beg == ' ') |
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401 beg++; |
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402 |
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403 if (*beg == '\0') |
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404 break; |
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405 |
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406 tok_count++; |
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407 if (tok_count >= max_toks) |
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408 goto done; |
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409 |
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410 s2[tok_count] = beg; |
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411 } |
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526
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412 s2[tok_count+1] = 0; |
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287
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413 |
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414 s2 = to_match; |
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415 |
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416 for (;;) |
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417 { |
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418 if (! almost_match (*s1, *s2, min_len[toks_matched], 0)) |
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419 goto done; |
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420 |
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421 toks_matched++; |
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422 |
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423 s1++; |
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424 s2++; |
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425 |
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426 if (! *s2) |
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427 { |
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428 status = (toks_matched >= min_toks_to_match); |
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429 goto done; |
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430 } |
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431 |
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432 if (! *s1) |
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433 goto done; |
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434 } |
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435 |
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436 done: |
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437 |
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438 delete [] kw; |
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439 delete [] to_match; |
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440 |
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441 return status; |
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1
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442 } |
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443 |
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444 char ** |
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338
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445 get_fcn_file_names (int& num, const char *dir, int no_suffix) |
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1
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446 { |
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447 static int num_max = 256; |
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448 char **retval = new char * [num_max]; |
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449 int i = 0; |
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450 |
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451 DIR *dirp = opendir (dir); |
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526
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452 if (dirp) |
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1
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453 { |
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454 struct dirent *entry; |
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526
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455 while ((entry = readdir (dirp)) != 0) |
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1
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456 { |
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457 int len = NLENGTH (entry); |
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458 if (len > 2 |
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459 && entry->d_name[len-2] == '.' |
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460 && entry->d_name[len-1] == 'm') |
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461 { |
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462 retval[i] = strsave (entry->d_name); |
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463 if (no_suffix) |
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464 retval[i][len-2] = '\0'; |
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465 |
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466 i++; |
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467 |
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468 if (i == num_max - 1) |
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469 { |
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244
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470 // Reallocate the array. Only copy pointers, not the strings they |
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471 // point to, then only delete the original array of pointers, and not |
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472 // the strings they point to. |
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473 |
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1
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474 num_max += 256; |
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475 char **tmp = new char * [num_max]; |
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476 for (int j = 0; j < i; j++) |
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477 tmp[j] = retval[j]; |
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478 |
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244
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479 delete [] retval; |
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480 |
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1
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481 retval = tmp; |
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482 } |
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483 } |
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484 } |
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106
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485 closedir (dirp); |
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1
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486 } |
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487 |
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526
|
488 retval[i] = 0; |
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1
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489 num = i; |
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490 |
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491 return retval; |
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492 } |
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493 |
|
|
494 char ** |
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338
|
495 get_fcn_file_names (int& num, int no_suffix) |
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1
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496 { |
|
|
497 static int num_max = 1024; |
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|
498 char **retval = new char * [num_max]; |
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499 int i = 0; |
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500 |
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501 char **path = pathstring_to_vector (user_pref.loadpath); |
|
|
502 |
|
|
503 char **ptr = path; |
|
526
|
504 if (ptr) |
|
1
|
505 { |
|
526
|
506 while (*ptr) |
|
1
|
507 { |
|
|
508 int tmp_num; |
|
338
|
509 char **names = get_fcn_file_names (tmp_num, *ptr, no_suffix); |
|
1
|
510 |
|
|
511 if (i + tmp_num >= num_max - 1) |
|
|
512 { |
|
244
|
513 // Reallocate the array. Only copy pointers, not the strings they |
|
|
514 // point to, then only delete the original array of pointers, and not |
|
|
515 // the strings they point to. |
|
|
516 |
|
1
|
517 num_max += 1024; |
|
|
518 char **tmp = new char * [num_max]; |
|
|
519 for (int j = 0; j < i; j++) |
|
|
520 tmp[j] = retval[j]; |
|
|
521 |
|
244
|
522 delete [] retval; |
|
|
523 |
|
1
|
524 retval = tmp; |
|
|
525 } |
|
|
526 |
|
|
527 int k = 0; |
|
|
528 while (k < tmp_num) |
|
|
529 retval[i++] = names[k++]; |
|
|
530 |
|
|
531 ptr++; |
|
|
532 } |
|
|
533 } |
|
|
534 |
|
526
|
535 retval[i] = 0; |
|
1
|
536 num = i; |
|
|
537 |
|
|
538 return retval; |
|
|
539 } |
|
|
540 |
|
|
541 int |
|
|
542 NINT (double x) |
|
|
543 { |
|
|
544 if (x > INT_MAX) |
|
|
545 return INT_MAX; |
|
|
546 else if (x < INT_MIN) |
|
|
547 return INT_MIN; |
|
|
548 else |
|
|
549 return (x > 0) ? ((int) (x + 0.5)) : ((int) (x - 0.5)); |
|
|
550 } |
|
|
551 |
|
|
552 double |
|
|
553 D_NINT (double x) |
|
|
554 { |
|
|
555 if (xisinf (x) || xisnan (x)) |
|
|
556 return x; |
|
|
557 else |
|
|
558 return floor (x + 0.5); |
|
|
559 } |
|
|
560 |
|
526
|
561 // XXX FIXME XXX -- put these in some file, and make them extern. |
|
|
562 |
|
|
563 static int |
|
|
564 all_strings (const Octave_object& args) |
|
|
565 { |
|
|
566 int n = args.length (); |
|
|
567 for (int i = 1; i < n; i++) |
|
610
|
568 if (! args(i).is_string ()) |
|
526
|
569 return 0; |
|
|
570 return 1; |
|
|
571 } |
|
|
572 |
|
|
573 char ** |
|
578
|
574 make_argv (const Octave_object& args, const char *fcn_name) |
|
526
|
575 { |
|
|
576 char **argv = 0; |
|
|
577 if (all_strings (args)) |
|
|
578 { |
|
|
579 int n = args.length (); |
|
|
580 argv = new char * [n + 1]; |
|
578
|
581 argv[0] = strsave (fcn_name); |
|
526
|
582 for (int i = 1; i < n; i++) |
|
|
583 argv[i] = strsave (args(i).string_value ()); |
|
|
584 } |
|
|
585 else |
|
578
|
586 error ("%s: expecting all arguments to be strings", fcn_name); |
|
526
|
587 |
|
|
588 return argv; |
|
|
589 } |
|
|
590 |
|
628
|
591 int |
|
|
592 empty_arg (const char *name, int nr, int nc) |
|
|
593 { |
|
|
594 int is_empty = 0; |
|
|
595 |
|
|
596 if (nr == 0 || nc == 0) |
|
|
597 { |
|
|
598 int flag = user_pref.propagate_empty_matrices; |
|
|
599 |
|
|
600 if (flag < 0) |
|
636
|
601 { |
|
|
602 gripe_empty_arg (name, 0); |
|
|
603 is_empty = 1; |
|
|
604 } |
|
|
605 else if (is_empty > 0) |
|
|
606 { |
|
|
607 gripe_empty_arg (name, 1); |
|
|
608 is_empty = -1; |
|
|
609 } |
|
628
|
610 } |
|
|
611 |
|
|
612 return is_empty; |
|
|
613 } |
|
|
614 |
|
581
|
615 // Format a list in neat columns. Mostly stolen from GNU ls. This |
|
|
616 // should maybe be in utils.cc. |
|
|
617 |
|
526
|
618 ostrstream& |
|
|
619 list_in_columns (ostrstream& os, char **list) |
|
|
620 { |
|
|
621 // Compute the maximum name length. |
|
|
622 |
|
|
623 int max_name_length = 0; |
|
|
624 int total_names = 0; |
|
|
625 for (char **names = list; *names; names++) |
|
|
626 { |
|
|
627 total_names++; |
|
|
628 int name_length = strlen (*names); |
|
|
629 if (name_length > max_name_length) |
|
|
630 max_name_length = name_length; |
|
|
631 } |
|
|
632 |
|
|
633 // Allow at least two spaces between names. |
|
|
634 |
|
|
635 max_name_length += 2; |
|
|
636 |
|
|
637 // Calculate the maximum number of columns that will fit. |
|
|
638 |
|
|
639 int line_length = terminal_columns (); |
|
|
640 int cols = line_length / max_name_length; |
|
|
641 if (cols == 0) |
|
|
642 cols = 1; |
|
|
643 |
|
|
644 // Calculate the number of rows that will be in each column except |
|
|
645 // possibly for a short column on the right. |
|
|
646 |
|
|
647 int rows = total_names / cols + (total_names % cols != 0); |
|
|
648 |
|
|
649 // Recalculate columns based on rows. |
|
|
650 |
|
|
651 cols = total_names / rows + (total_names % rows != 0); |
|
|
652 |
|
|
653 names = list; |
|
|
654 int count; |
|
|
655 for (int row = 0; row < rows; row++) |
|
|
656 { |
|
|
657 count = row; |
|
|
658 int pos = 0; |
|
|
659 |
|
|
660 // Print the next row. |
|
|
661 |
|
|
662 while (1) |
|
|
663 { |
|
|
664 os << *(names + count); |
|
|
665 int name_length = strlen (*(names + count)); |
|
|
666 |
|
|
667 count += rows; |
|
|
668 if (count >= total_names) |
|
|
669 break; |
|
|
670 |
|
|
671 int spaces_to_pad = max_name_length - name_length; |
|
|
672 for (int i = 0; i < spaces_to_pad; i++) |
|
|
673 os << " "; |
|
|
674 pos += max_name_length; |
|
|
675 } |
|
|
676 os << "\n"; |
|
|
677 } |
|
|
678 |
|
|
679 return os; |
|
|
680 } |
|
|
681 |
|
581
|
682 // See if the given file is in the path. |
|
|
683 |
|
526
|
684 char * |
|
|
685 file_in_path (const char *name, const char *suffix) |
|
|
686 { |
|
|
687 char *retval = 0; |
|
|
688 |
|
|
689 char *nm = strconcat ("/", name); |
|
|
690 if (suffix) |
|
|
691 { |
|
|
692 char *tmp = nm; |
|
|
693 nm = strconcat (tmp, suffix); |
|
|
694 delete [] tmp; |
|
|
695 } |
|
|
696 |
|
|
697 if (! the_current_working_directory) |
|
|
698 get_working_directory ("file_in_path"); |
|
|
699 |
|
|
700 char **path = pathstring_to_vector (user_pref.loadpath); |
|
|
701 |
|
|
702 char **ptr = path; |
|
|
703 if (ptr) |
|
|
704 { |
|
|
705 while (*ptr) |
|
|
706 { |
|
|
707 char *tmp = strconcat (*ptr, nm); |
|
|
708 char *p = make_absolute (tmp, the_current_working_directory); |
|
|
709 delete [] tmp; |
|
|
710 ifstream in_file (p); |
|
|
711 if (in_file) |
|
|
712 { |
|
|
713 in_file.close (); |
|
|
714 retval = p; |
|
|
715 goto done; |
|
|
716 } |
|
|
717 delete [] p; |
|
|
718 ptr++; |
|
|
719 } |
|
|
720 } |
|
|
721 |
|
|
722 done: |
|
|
723 delete [] nm; |
|
|
724 return retval; |
|
|
725 } |
|
|
726 |
|
581
|
727 // See if there is an function file in the path. If so, return the |
|
|
728 // full path to the file. |
|
|
729 |
|
526
|
730 char * |
|
|
731 fcn_file_in_path (const char *name) |
|
|
732 { |
|
|
733 return file_in_path (name, ".m"); |
|
|
734 } |
|
|
735 |
|
581
|
736 // See if there is an octave file in the path. If so, return the |
|
|
737 // full path to the file. |
|
|
738 |
|
572
|
739 char * |
|
|
740 oct_file_in_path (const char *name) |
|
|
741 { |
|
|
742 return file_in_path (name, ".oct"); |
|
|
743 } |
|
|
744 |
|
|
745 /* |
|
1
|
746 ;;; Local Variables: *** |
|
|
747 ;;; mode: C++ *** |
|
|
748 ;;; page-delimiter: "^/\\*" *** |
|
|
749 ;;; End: *** |
|
|
750 */ |
