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428
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1 /*
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2 Copyright (C) 1995 Free Software Foundation, Inc.
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2421
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3 Copyright (C) 2000, 2001, 2002, 2004 Ben Wing.
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428
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4
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5 This file is part of XEmacs.
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6
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7 XEmacs is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 2, or (at your option) any
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10 later version.
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11
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12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with XEmacs; see the file COPYING. If not, write to
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19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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20 Boston, MA 02111-1307, USA. */
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21
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22 /* Synched up with: Not really in FSF. */
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23
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440
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24 #ifndef INCLUDED_sysfile_h_
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25 #define INCLUDED_sysfile_h_
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26
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771
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27 /* The anonymous voice of the past says:
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28 Must come before sysfile.h
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29
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30 So instead we just put it here. --ben */
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31 #ifdef HAVE_LIBGEN_H
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32 #include <libgen.h>
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33 #endif
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34
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428
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35 #include <errno.h>
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36
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442
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37 #ifndef WIN32_NATIVE
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573
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38 # include <sys/errno.h> /* <errno.h> does not always imply this */
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428
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39 #endif
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40
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41 #ifdef HAVE_UNISTD_H
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558
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42 # include <unistd.h>
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428
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43 #endif
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44
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45 #ifndef INCLUDED_FCNTL
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46 # define INCLUDED_FCNTL
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47 # include <fcntl.h>
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48 #endif /* INCLUDED_FCNTL */
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49
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558
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50 /* The anonymous voice of the past says:
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428
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51 In some systems loading it twice is suicidal. */
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558
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52 #ifndef INCLUDED_SYS_TYPES
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53 # define INCLUDED_SYS_TYPES
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54 # include <sys/types.h> /* some typedefs are used in sys/file.h */
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55 #endif /* INCLUDED_SYS_TYPES */
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442
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56
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57 #ifndef WIN32_NATIVE
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558
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58 # include <sys/file.h>
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442
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59 #endif
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60
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1467
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61 /* Some systems (SCO 3.2v5) do #define stat ... in this header. So it
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62 _must_ be included before any use of struct stat. Most emacs files
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63 should include sysfile.h. The unex*.c include <sys/stat.h> directly. */
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428
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64 #include <sys/stat.h>
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442
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65
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1315
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66 #ifdef WIN32_ANY
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558
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67 # include <io.h>
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68 #endif
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69
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70 #ifdef WIN32_NATIVE
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71 # include <direct.h>
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72 #else
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442
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73 /* Some configuration files' definitions for the LOAD_AVE_CVT macro
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74 (like sparc.h's) use macros like FSCALE, defined here. */
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558
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75 # ifdef HAVE_GTK
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462
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76 /* I hate GTK */
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558
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77 # undef MIN
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78 # undef MAX
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79 # endif /* HAVE_GTK */
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80 # include <sys/param.h>
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609
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81 /* As per Martin's recommendation, we do not include this. There was
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82 a comment stating that stuff from here was needed on NeXT, Cygwin,
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83 and sunplay.c. However, Cygwin includes this automatically from
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84 fcntl.h, and Martin says that a "conforming" system should never
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85 need this. We will put it back if necessary on systems requiring it. */
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86 /* # include <sys/fcntl.h> */
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777
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87 #endif /* WIN32_NATIVE */
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428
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88
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89 #ifndef STDERR_FILENO
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90 #define STDIN_FILENO 0
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91 #define STDOUT_FILENO 1
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92 #define STDERR_FILENO 2
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93 #endif
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94
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95 #ifndef O_RDONLY
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96 #define O_RDONLY 0
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97 #endif
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98
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99 #ifndef O_WRONLY
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100 #define O_WRONLY 1
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101 #endif
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102
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103 #ifndef O_RDWR
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104 #define O_RDWR 2
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105 #endif
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106
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107 /* file opening defaults */
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108 #ifndef OPEN_BINARY
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109 #ifdef O_BINARY
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110 #define OPEN_BINARY O_BINARY
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111 #else
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112 #define OPEN_BINARY (0)
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113 #endif
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114 #endif
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115
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116 #ifndef OPEN_TEXT
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117 #ifdef O_TEXT
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118 #define OPEN_TEXT O_TEXT
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119 #else
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120 #define OPEN_TEXT (0)
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121 #endif
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122 #endif
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123
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124 #ifndef CREAT_MODE
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442
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125 #ifdef WIN32_NATIVE
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428
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126 #define CREAT_MODE (S_IREAD | S_IWRITE)
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127 #else
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128 #define CREAT_MODE (0666)
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129 #endif
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130 #endif
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131
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132 #ifndef READ_TEXT
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133 #ifdef O_TEXT
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134 #define READ_TEXT "rt"
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135 #else
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136 #define READ_TEXT "r"
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137 #endif
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138 #endif
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139
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140 #ifndef READ_BINARY
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141 #ifdef O_BINARY
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142 #define READ_BINARY "rb"
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143 #else
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144 #define READ_BINARY "r"
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145 #endif
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146 #endif
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147
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442
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148 #ifndef READ_PLUS_TEXT
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149 #ifdef O_TEXT
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150 #define READ_PLUS_TEXT "r+t"
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151 #else
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152 #define READ_PLUS_TEXT "r+"
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153 #endif
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154 #endif
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155
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156 #ifndef READ_PLUS_BINARY
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157 #ifdef O_BINARY
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158 #define READ_PLUS_BINARY "r+b"
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159 #else
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160 #define READ_PLUS_BINARY "r+"
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161 #endif
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162 #endif
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163
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164 #ifndef WRITE_TEXT
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165 #ifdef O_TEXT
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166 #define WRITE_TEXT "wt"
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167 #else
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168 #define WRITE_TEXT "w"
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169 #endif
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170 #endif
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171
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428
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172 #ifndef WRITE_BINARY
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173 #ifdef O_BINARY
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174 #define WRITE_BINARY "wb"
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175 #else
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176 #define WRITE_BINARY "w"
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177 #endif
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178 #endif
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179
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771
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180 #ifndef APPEND_TEXT
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181 #ifdef O_TEXT
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182 #define APPEND_TEXT "at"
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183 #else
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184 #define APPEND_TEXT "a"
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185 #endif
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186 #endif
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187
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188 #ifndef APPEND_BINARY
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189 #ifdef O_BINARY
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190 #define APPEND_BINARY "ab"
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191 #else
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192 #define APPEND_BINARY "a"
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193 #endif
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194 #endif
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195
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428
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196 #ifndef O_NONBLOCK
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197 #ifdef O_NDELAY
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198 #define O_NONBLOCK O_NDELAY
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199 #else
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200 #define O_NONBLOCK 04000
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201 #endif
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202 #endif
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203
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204 #if !S_IRUSR
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205 # if S_IREAD
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206 # define S_IRUSR S_IREAD
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207 # else
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208 # define S_IRUSR 00400
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209 # endif
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210 #endif
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211
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212 #if !S_IWUSR
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213 # if S_IWRITE
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214 # define S_IWUSR S_IWRITE
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215 # else
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216 # define S_IWUSR 00200
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217 # endif
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218 #endif
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219
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220 #if !S_IXUSR
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221 # if S_IEXEC
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222 # define S_IXUSR S_IEXEC
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223 # else
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224 # define S_IXUSR 00100
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225 # endif
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226 #endif
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227
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228 #ifdef STAT_MACROS_BROKEN
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229 #undef S_ISBLK
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230 #undef S_ISCHR
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231 #undef S_ISDIR
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232 #undef S_ISFIFO
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233 #undef S_ISLNK
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234 #undef S_ISMPB
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235 #undef S_ISMPC
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236 #undef S_ISNWK
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237 #undef S_ISREG
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238 #undef S_ISSOCK
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239 #endif /* STAT_MACROS_BROKEN. */
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240
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241 #if !defined(S_ISBLK) && defined(S_IFBLK)
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242 #define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
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243 #endif
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244 #if !defined(S_ISCHR) && defined(S_IFCHR)
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245 #define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
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246 #endif
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247 #if !defined(S_ISDIR) && defined(S_IFDIR)
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248 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
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249 #endif
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250 #if !defined(S_ISREG) && defined(S_IFREG)
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251 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
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252 #endif
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253 #if !defined(S_ISFIFO) && defined(S_IFIFO)
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254 #define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
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255 #endif
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256 #if !defined(S_ISLNK) && defined(S_IFLNK)
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257 #define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
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258 #endif
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259 #if !defined(S_ISSOCK) && defined(S_IFSOCK)
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260 #define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
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261 #endif
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262 #if !defined(S_ISMPB) && defined(S_IFMPB) /* V7 */
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263 #define S_ISMPB(m) (((m) & S_IFMT) == S_IFMPB)
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264 #define S_ISMPC(m) (((m) & S_IFMT) == S_IFMPC)
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265 #endif
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266 #if !defined(S_ISNWK) && defined(S_IFNWK) /* HP/UX */
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267 #define S_ISNWK(m) (((m) & S_IFMT) == S_IFNWK)
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268 #endif
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269
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2421
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270 /* Determining the maximum pathname length.
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271
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272 NOTE: IN GENERAL, YOU SHOULD NOT USE THIS.
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273 If at all possible, avoid using fixed-length buffers of any sort.
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274 You cannot guarantee on many systems that pathnames won't exceed
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275 these limits for one reason or another.
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276
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277 Unfortunately, there is no universal agreement over whether these
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278 values should include a final null-terminator or not. Even recent
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279 versions of Linux (circa 2002) are switching from the not-including-
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280 terminator kind to the including-terminator kind. So we assume that
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281 the including-terminator kind will be even (usually is), and round
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282 up as necessary. */
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283
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284 #define ROUND_UP_TO_EVEN_NUMBER(val) (((val + 1) >> 1) << 1)
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285 #ifdef PATH_MAX
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286 # define QXE_PATH_MAX ROUND_UP_TO_EVEN_NUMBER (PATH_MAX)
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287 #elif defined (_MAX_PATH)
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558
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288 /* MS Win -- and preferable to _POSIX_PATH_MAX, which is also defined */
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2421
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289 # define QXE_PATH_MAX ROUND_UP_TO_EVEN_NUMBER (_MAX_PATH)
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290 #elif defined (_POSIX_PATH_MAX)
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291 # define QXE_PATH_MAX ROUND_UP_TO_EVEN_NUMBER (_POSIX_PATH_MAX)
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292 #elif defined (MAXPATHLEN)
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293 # define QXE_PATH_MAX ROUND_UP_TO_EVEN_NUMBER (MAXPATHLEN)
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294 #else
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295 # define QXE_PATH_MAX 1024
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442
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296 #endif
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297
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2421
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298 /* Client .c files should use PATH_MAX_INTERNAL or PATH_MAX_EXTERNAL
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299 if they must use either one at all. */
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300
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301 /* Use for internally formatted text, which can potentially have up to
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302 four bytes per character */
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303 #define PATH_MAX_INTERNAL (QXE_PATH_MAX * MAX_ICHAR_LEN)
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304 /* Use for externally formatted text. */
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305 #define PATH_MAX_EXTERNAL (QXE_PATH_MAX * MAX_XETCHAR_SIZE)
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306
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442
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307 /* The following definitions are needed under Windows, at least */
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308 #ifndef X_OK
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309 # define X_OK 1
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310 #endif
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428
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311
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442
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312 #ifndef R_OK
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313 # define R_OK 4
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314 #endif
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315
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771
|
316 #ifndef D_OK
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317 # define D_OK 8
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318 #endif
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319
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442
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320 #ifndef W_OK
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321 # define W_OK 2
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322 #endif
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323
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324 #ifndef F_OK
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325 # define F_OK 0
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428
|
326 #endif
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327
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328 #ifndef FD_CLOEXEC
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329 # define FD_CLOEXEC 1
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330 #endif
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331
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771
|
332 #ifdef emacs
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333
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428
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334 /* Emacs needs to use its own definitions of certain system calls on
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335 some systems (like SunOS 4.1 and USG systems, where the read system
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336 call is interruptible but Emacs expects it not to be; and under
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337 MULE, where all filenames need to be converted to external format).
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338
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771
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339 We used to play preprocessor games, but in the long run that just leads
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340 you to ruin. So we explicitly put in the new calls, even if the source
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341 gets marginally less pretty.
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428
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342
|
|
771
|
343 Current files where we don't use retry_ or qxe_ versions:
|
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428
|
344
|
|
771
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345 -- all sound files except ntplay.c (includes esd.c libsst.[ch] libst.h
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346 linuxplay.c sgiplay.c sunplay.c
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347 hpplay.c nas.c)
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348 -- all unex* files
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349 -- hftctl.c
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350 -- lib-src files
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351 */
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|
428
|
352
|
|
771
|
353 ssize_t retry_read (int, void *, size_t);
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354 ssize_t retry_write (int, const void *, size_t);
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355 int retry_open (const Extbyte *path, int oflag, ...);
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|
867
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356 int qxe_open (const Ibyte *path, int oflag, ...);
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|
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357 int qxe_interruptible_open (const Ibyte *path, int oflag, int mode);
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|
771
|
358 int retry_close (int);
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359 Bytecount read_allowing_quit (int fildes, void *buf, Bytecount size);
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360 Bytecount write_allowing_quit (int fildes, const void *buf,
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|
361 Bytecount size);
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|
428
|
362
|
|
|
363 /* Now the stdio versions ... */
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364
|
|
771
|
365 size_t retry_fread (void *, size_t, size_t, FILE *);
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|
|
366 size_t retry_fwrite (const void *, size_t, size_t, FILE *);
|
|
2367
|
367 FILE *retry_fopen (const Extbyte *path, const Ascbyte *mode);
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|
|
368 FILE *qxe_fopen (const Ibyte *path, const Ascbyte *mode);
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|
771
|
369 int retry_fclose (FILE *);
|
|
428
|
370
|
|
|
371 /* encapsulations: file-information calls */
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|
372
|
|
867
|
373 int qxe_access (const Ibyte *path, int mode);
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|
|
374 int qxe_eaccess (const Ibyte *path, int mode);
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|
375 int qxe_lstat (const Ibyte *path, struct stat *buf);
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|
376 int qxe_readlink (const Ibyte *path, Ibyte *buf, size_t bufsiz);
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|
771
|
377 int qxe_fstat (int fd, struct stat *buf);
|
|
867
|
378 int qxe_stat (const Ibyte *path, struct stat *buf);
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|
|
379 Ibyte *qxe_realpath (const Ibyte *path, Ibyte resolved_path []);
|
|
428
|
380
|
|
|
381 /* encapsulations: file-manipulation calls */
|
|
|
382
|
|
867
|
383 int qxe_chmod (const Ibyte *path, mode_t mode);
|
|
771
|
384
|
|
|
385 #if defined (HAVE_LINK)
|
|
867
|
386 int qxe_link (const Ibyte *existing, const Ibyte *new);
|
|
771
|
387 #endif /* defined (HAVE_LINK) */
|
|
|
388
|
|
867
|
389 int qxe_rename (const Ibyte *old, const Ibyte *new);
|
|
771
|
390
|
|
|
391 #if defined (HAVE_SYMLINK)
|
|
867
|
392 int qxe_symlink (const Ibyte *name1, const Ibyte *name2);
|
|
771
|
393 #endif /* defined (HAVE_SYMLINK) */
|
|
|
394
|
|
867
|
395 int qxe_unlink (const Ibyte *path);
|
|
771
|
396
|
|
1467
|
397 /* definition in filemode.c
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398 must be declared here to ensure that struct stat is properly formed
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399 on systems like SCO 3.2v5 */
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400 void filemodestring (struct stat *, char *);
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401
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771
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402 #endif /* emacs */
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403
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404
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405 #ifndef HAVE_H_ERRNO
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406 extern int h_errno;
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428
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407 #endif
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408
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771
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409 #ifndef HAVE_DUP2
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410 int dup2 (int oldd, int newd);
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428
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411 #endif
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412
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771
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413 #ifndef HAVE_STRERROR
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414 /* X11R6 defines strerror as a macro */
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415 # ifdef strerror
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416 # undef strerror
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417 # endif
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418 const char *strerror (int);
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428
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419 #endif
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420
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771
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421
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422
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423 /*
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424 DEFAULT_DIRECTORY_SEP is the default value of Vdirectory_sep_char.
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425 DIRECTORY_SEP is the currently preferred separator between elements
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426 of a path, when paths are canonicalized.
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427 DEVICE_SEP is the separator between devices and paths (might not
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428 be defined).
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429 SEPCHAR is the separator between paths in a path search string
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430 (e.g. the PATH environment variable).
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431 IS_DIRECTORY_SEP() returns true if the character is any directory
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432 separator (there might be more than one allowed on a system.).
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433 IS_DEVICE_SEP() returns true if the character is a device separator.
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434 IS_ANY_SEP() returns true if the character is a directory or device
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435 separator.
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436 */
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437
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438 #ifdef emacs
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428
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439
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771
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440 /* We used to put some of this stuff in the s+m files for the various
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441 types of MS Windows, but that's disingenuous. The various definitions
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442 above were specifically created for MS Windows, and the "if not, then
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443 let's define the defaults" stuff (formerly in lisp.h) specifically knows
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444 about what is going to get redefined and how, and code all over the
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445 place that works with filenames has to conditionalize on WIN32_NATIVE
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446 anyway. It's much clearer if we put all related definitions in one
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447 place. (In fact, I discovered a number of bugs in the process.)
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448
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449 S+M files should be used for simple on-off or multiple-choice settings,
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450 or possibly string settings. Anything that gets to the level of
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451 programming should be elsewhere, and anything that ends up having
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452 lots of complicated interactions scattered around in many files should
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453 be consolidated. */
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454
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455 #ifdef WIN32_NATIVE
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456
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457 #define SEPCHAR ';'
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458 #define DEFAULT_DIRECTORY_SEP '\\'
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428
|
459
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|
867
|
460 DECLARE_INLINE_HEADER (Ibyte sysfile_get_directory_sep (void))
|
|
771
|
461 {
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|
462 if (!CHARP (Vdirectory_sep_char)
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463 || (XCHAR (Vdirectory_sep_char) != '/'
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464 && XCHAR (Vdirectory_sep_char) != '\\'))
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465 {
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466 warn_when_safe
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467 (Qfile_name, Qerror,
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468 "`directory-sep-char' set to invalid %s: resetting to %c.",
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469 DEFAULT_DIRECTORY_SEP);
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470 Vdirectory_sep_char = make_char (DEFAULT_DIRECTORY_SEP);
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471 }
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472
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473 return XCHAR (Vdirectory_sep_char);
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474 }
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|
|
475 #define DIRECTORY_SEP sysfile_get_directory_sep()
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|
476
|
|
|
477 #else /* not WIN32_NATIVE */
|
|
|
478
|
|
|
479 #define SEPCHAR ':'
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|
|
480 #define DEFAULT_DIRECTORY_SEP '/'
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|
|
481 #define DIRECTORY_SEP '/'
|
|
|
482
|
|
|
483 #endif /* WIN32_NATIVE */
|
|
|
484
|
|
428
|
485
|
|
1315
|
486 #ifdef WIN32_ANY
|
|
771
|
487
|
|
|
488 #define DEVICE_SEP ':'
|
|
|
489
|
|
|
490 #define IS_DEVICE_SEP(c) ((c) == DEVICE_SEP)
|
|
|
491
|
|
867
|
492 DECLARE_INLINE_HEADER (int IS_DIRECTORY_SEP (Ichar c))
|
|
771
|
493 {
|
|
|
494 return (c == '/' || c == '\\');
|
|
|
495 }
|
|
|
496
|
|
867
|
497 DECLARE_INLINE_HEADER (int IS_ANY_SEP (Ichar c))
|
|
771
|
498 {
|
|
|
499 return (c == '/' || c == '\\' || c == ':');
|
|
|
500 }
|
|
|
501
|
|
1315
|
502 #else /* not WIN32_ANY */
|
|
771
|
503
|
|
|
504 #define IS_DEVICE_SEP(c) 0
|
|
|
505 #define IS_DIRECTORY_SEP(c) ((c) == DIRECTORY_SEP)
|
|
|
506 #define IS_ANY_SEP(c) IS_DIRECTORY_SEP (c)
|
|
|
507
|
|
1315
|
508 #endif /* WIN32_ANY */
|
|
771
|
509
|
|
|
510 #endif /* emacs */
|
|
|
511
|
|
440
|
512 #endif /* INCLUDED_sysfile_h_ */
|
