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annotate liboctave/util/url-transfer.h @ 17596:43b9181340fb

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separate object creation from http actions in url_transfer class * url-transfer.h, url-transfer.cc: New functions for http GET and POST actions. Don't perform action in URL constructor. Keep track of FTP vs. HTTP object type. * urlwrite.cc: Update to match.
author John W. Eaton <jwe@octave.org>
date Mon, 07 Oct 2013 23:15:06 -0400
parents 58039875767d
children d8d71c89fff2
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1 /*
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2
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3 Copyright (C) 2013 John W. Eaton
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4 Copyright (C) 2006-2012 Alexander Barth
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5 Copyright (C) 2009 David Bateman
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6
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7 This file is part of Octave.
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8
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9 Octave is free software; you can redistribute it and/or modify it
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10 under the terms of the GNU General Public License as published by the
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11 Free Software Foundation; either version 3 of the License, or (at your
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12 option) any later version.
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13
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14 Octave is distributed in the hope that it will be useful, but WITHOUT
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15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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17 for more details.
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18
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19 You should have received a copy of the GNU General Public License
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20 along with Octave; see the file COPYING. If not, see
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21 <http://www.gnu.org/licenses/>.
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22
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23 */
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24
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25 // Author: Alexander Barth <abarth@marine.usf.edu>
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26 // Author: jwe
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27
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28 #if !defined (octave_url_transfer_h)
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29 #define octave_url_transfer_h 1
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30
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31 #include <iosfwd>
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32 #include <string>
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33
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34 class base_url_transfer
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35 {
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36 private:
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37
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38 static void delete_file (const std::string& file);
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39
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40 static void reset_path (base_url_transfer *curl_xfer)
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41 {
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42 curl_xfer->cwd ("..");
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43 }
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44
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45 public:
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46
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47 friend class url_transfer;
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48
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49 base_url_transfer (void)
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50 : count (1), host_or_url (), userpwd (), valid (false), ftp (false),
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51 ascii_mode (false), ok (true), errmsg (),
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52 curr_istream (&std::cin), curr_ostream (&std::cout)
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53 { }
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54
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55 base_url_transfer (const std::string& host,
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56 const std::string& /* user_arg */,
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57 const std::string& /* passwd */,
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58 std::ostream& os)
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59 : count (1), host_or_url (host), userpwd (), valid (false), ftp (true),
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60 ascii_mode (false), ok (true), errmsg (), curr_istream (&std::cin),
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61 curr_ostream (&os) { }
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62
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63 base_url_transfer (const std::string& url, std::ostream& os)
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64 : count (1), host_or_url (url), userpwd (), valid (false), ftp (false),
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65 ascii_mode (false), ok (true), errmsg (),
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66 curr_istream (&std::cin), curr_ostream (&os) { }
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67
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68 virtual ~base_url_transfer (void) { }
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69
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70 bool is_valid (void) const { return valid; }
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71
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72 bool good (void) const { return valid && ok; }
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73
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74 virtual void perform (void) { }
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75
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76 virtual std::string lasterror (void) const { return errmsg; }
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77
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78 virtual std::ostream& set_ostream (std::ostream& /* os */)
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79 {
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80 return *curr_ostream;
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81 }
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82
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83 virtual std::istream& set_istream (std::istream& /* is */)
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84 {
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85 return *curr_istream;
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86 }
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87
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88 virtual void ascii (void) { }
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89
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90 virtual void binary (void) { }
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91
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92 bool is_ascii (void) const { return ascii_mode; }
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93
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94 bool is_binary (void) const { return !ascii_mode; }
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95
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96 virtual void cwd (const std::string& /* path */) { }
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97
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98 virtual void del (const std::string& /* file */) { }
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99
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100 virtual void rmdir (const std::string& /* path */) { }
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101
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102 virtual void mkdir (const std::string& /* path */) { }
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103
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104 virtual void rename (const std::string& /* oldname */,
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105 const std::string& /* newname */) { }
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106
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107 virtual void put (const std::string& /* file */,
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108 std::istream& /* is */) { }
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109
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110 virtual void get (const std::string& /* file */,
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111 std::ostream& /* os */) { }
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112
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113 void mget_directory (const std::string& directory,
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114 const std::string& target);
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115
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116 string_vector mput_directory (const std::string& base,
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117 const std::string& directory);
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118
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119 virtual void dir (void) { }
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120
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121 virtual string_vector list (void) { return string_vector (); }
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122
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123 virtual void get_fileinfo (const std::string& /* filename */,
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124 double& /* filesize */,
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125 time_t& /* filetime */,
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126 bool& /* fileisdir */) { }
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127
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128 virtual std::string pwd (void) { return std::string (); }
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129
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130 virtual void http_get (const Array<std::string>& /* param */) { }
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131
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132 virtual void http_post (const Array<std::string>& /* param */) { }
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133
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134 virtual void http_action (const Array<std::string>& /* param */,
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135 const std::string& /* action */) { }
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136
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137 protected:
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138
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139 // Reference count.
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140 octave_refcount<size_t> count;
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141
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142 // Host for ftp transfers or full URL for http requests.
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143 std::string host_or_url;
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144 std::string userpwd;
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145 bool valid;
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146 bool ftp;
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147 bool ascii_mode;
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148 bool ok;
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149 std::string errmsg;
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150 std::istream *curr_istream;
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151 std::ostream *curr_ostream;
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152
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153 private:
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154
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155 // No copying!
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156
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157 base_url_transfer (const base_url_transfer&);
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158
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159 base_url_transfer& operator = (const base_url_transfer&);
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160 };
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161
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162 class url_transfer
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163 {
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164 public:
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165
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166 url_transfer (void);
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167
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168 url_transfer (const std::string& host, const std::string& user,
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169 const std::string& passwd, std::ostream& os);
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170
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171 url_transfer (const std::string& url, std::ostream& os);
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172
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173 url_transfer (const url_transfer& h) : rep (h.rep)
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174 {
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175 rep->count++;
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176 }
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177
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178 ~url_transfer (void)
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179 {
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180 if (--rep->count == 0)
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181 delete rep;
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182 }
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183
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184 url_transfer& operator = (const url_transfer& h)
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185 {
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186 if (this != &h)
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187 {
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188 if (--rep->count == 0)
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189 delete rep;
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190
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191 rep = h.rep;
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192 rep->count++;
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193 }
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194
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195 return *this;
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196 }
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197
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198 bool is_valid (void) const { return rep->is_valid (); }
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199
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200 bool good (void) const { return rep->good (); }
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201
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202 std::string lasterror (void) const { return rep->lasterror (); }
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203
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204 std::ostream& set_ostream (std::ostream& os)
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205 {
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206 return rep->set_ostream (os);
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207 }
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208
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209 std::istream& set_istream (std::istream& is)
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210 {
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211 return rep->set_istream (is);
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212 }
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213
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214 void ascii (void) { rep->ascii (); }
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215
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216 void binary (void) { rep->binary (); }
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217
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218 bool is_ascii (void) const { return rep->is_ascii (); }
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219
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220 bool is_binary (void) const { return rep->is_binary (); }
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221
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222 void cwd (const std::string& path) { rep->cwd (path); }
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223
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224 void del (const std::string& file) { rep->del (file); }
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225
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226 void rmdir (const std::string& path) { rep->rmdir (path); }
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227
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228 void mkdir (const std::string& path) { rep->mkdir (path); }
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229
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230 void rename (const std::string& oldname, const std::string& newname)
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231 {
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232 rep->rename (oldname, newname);
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233 }
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234
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235 void put (const std::string& file, std::istream& is)
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236 {
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237 rep->put (file, is);
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238 }
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239
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240 void get (const std::string& file, std::ostream& os)
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241 {
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242 rep->get (file, os);
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243 }
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244
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245 void mget_directory (const std::string& directory,
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246 const std::string& target)
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247 {
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248 rep->mget_directory (directory, target);
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249 }
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250
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251 string_vector mput_directory (const std::string& base,
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252 const std::string& directory)
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253 {
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254 return rep->mput_directory (base, directory);
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255 }
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256
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257 void dir (void) { rep->dir (); }
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258
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259 string_vector list (void) { return rep->list (); }
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260
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261 void get_fileinfo (const std::string& filename, double& filesize,
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262 time_t& filetime, bool& fileisdir)
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263 {
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264 rep->get_fileinfo (filename, filesize, filetime, fileisdir);
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265 }
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266
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267 std::string pwd (void) { return rep->pwd (); }
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268
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269 void http_get (const Array<std::string>& param) { rep->http_get (param); }
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270
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271 void http_post (const Array<std::string>& param) { rep->http_post (param); }
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272
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273 void http_action (const Array<std::string>& param,
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274 const std::string& action)
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275 {
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276 rep->http_action (param, action);
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277 }
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278
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279 private:
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280
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281 base_url_transfer *rep;
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282 };
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283
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284 #endif