1 | /**********************************************************************
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2 | *
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3 | * langaction.cpp --
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4 | * Copyright (C) 1999 The New Zealand Digital Library Project
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5 | *
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6 | * A component of the Greenstone digital library software
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7 | * from the New Zealand Digital Library Project at the
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8 | * University of Waikato, New Zealand.
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9 | *
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10 | * This program is free software; you can redistribute it and/or modify
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11 | * it under the terms of the GNU General Public License as published by
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12 | * the Free Software Foundation; either version 2 of the License, or
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13 | * (at your option) any later version.
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14 | *
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15 | * This program is distributed in the hope that it will be useful,
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16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 | * GNU General Public License for more details.
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19 | *
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20 | * You should have received a copy of the GNU General Public License
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21 | * along with this program; if not, write to the Free Software
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22 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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23 | *
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24 | *********************************************************************/
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25 |
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26 | #include <stdio.h>
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27 | #include <fstream.h>
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28 | #include "langaction.h"
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29 | #include "fileutil.h"
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30 | #include "gsdltools.h"
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31 | #include "gsdlunicode.h"
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32 | #include "langdb.h"
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33 | #include "errno.h"
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34 | #include <sys/utsname.h>
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35 |
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36 |
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37 | /*====================*
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38 | * GLOBAL DEFINITIONS *
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39 | *====================*/
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40 |
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41 | // text file reading buffer
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42 | const int BUFFSIZE = 1024;
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43 | char temp[BUFFSIZE];
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44 |
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45 |
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46 |
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47 | /*========================*
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48 | * LOCAL UTILITY ROUTINES *
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49 | *========================*/
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50 |
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51 | // gets the list of packages/files that contain the content of the web-forms
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52 | text_tarray get_pagenos(text_t dir, ostream &logout)
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53 | {
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54 | text_tarray pagenos;
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55 |
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56 | // file 'logfile' contains all the page numbers, one number per line
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57 | text_t logfile = filename_cat(dir, "package_forms", "pageno.log");
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58 |
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59 | //open the file as a read only file
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60 | ifstream readfile(logfile.getcstr(), ios::in);
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61 |
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62 | // if file isn't opened, print error and return
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63 | if (!readfile) {
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64 | logout << "File " << logfile.getcstr() << " could not be found.\n";
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65 | return pagenos;
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66 | }
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67 |
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68 | // go through file, pushing each page number on to the end of a text_tarray
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69 | while (readfile.getline(temp, BUFFSIZE-1)) {
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70 | text_t t_temp = temp;
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71 | pagenos.push_back(temp);
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72 | }
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73 | readfile.close();
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74 |
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75 | //returns the array of page numbers
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76 | return pagenos;
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77 | }
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78 |
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79 | bool text_t_substring (text_t &text, text_t &substr)
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80 | {
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81 | int SIZE = substr.size();
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82 |
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83 | if (text.size() >= SIZE) {
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84 | if (substr <= text) {
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85 | if (text[0] == substr[0]) {
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86 | text_t temp = "";
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87 | // copy first SIZE elements of 'text' into 'temp'
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88 | for (int size = 0; size < SIZE; size++) {
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89 | temp.push_back(text[size]);
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90 | }
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91 | if (temp == substr)
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92 | return true;
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93 | }
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94 | }
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95 | }
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96 |
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97 | return false;
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98 | }
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99 |
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100 | bool langaction::init (ostream & /*logout*/) {
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101 |
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102 | // set up GSDLOS, GSDLHOME and PATH environment variables
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103 | text_t gsdlos, path;
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104 | unsigned int path_separator = ':';
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105 | #if defined (__WIN32__)
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106 | gsdlos = "windows";
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107 | path_separator = ';';
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108 |
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109 | path = filename_cat (gsdlhome, "bin", "windows", "perl", "bin;");
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110 |
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111 | #else
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112 | struct utsname *buf = new struct utsname();
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113 | int i = uname (buf);
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114 | if (i == -1) gsdlos = "linux"; // uname failed
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115 | else gsdlos.setcstr (buf->sysname);
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116 | delete buf;
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117 | lc (gsdlos);
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118 | #endif
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119 |
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120 | pathc = getenv ("PATH");
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121 | path += filename_cat (gsdlhome, "bin", gsdlos);
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122 | path.push_back (path_separator);
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123 | path += filename_cat (gsdlhome, "bin", "script");
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124 | if (pathc != NULL) {
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125 | path.push_back (path_separator);
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126 | path += pathc;
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127 | }
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128 | path = "PATH=" + path;
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129 |
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130 | gsdlos = "GSDLOS=" + gsdlos;
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131 | text_t setgsdlhome = "GSDLHOME=" + gsdlhome;
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132 |
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133 | // these will be cleaned up in the destructor
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134 | gsdlosc = gsdlos.getcstr();
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135 | gsdlhomec = setgsdlhome.getcstr();
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136 | pathc = path.getcstr();
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137 |
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138 | putenv (gsdlosc);
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139 | putenv (gsdlhomec);
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140 | putenv (pathc);
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141 |
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142 | return true;
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143 | }
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144 | /*====================*
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145 | * CLASS DEFINITIONS *
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146 | *====================*/
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147 |
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148 | langaction::langaction () {
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149 |
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150 | package = "";
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151 |
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152 | // this action uses cgi variables "a", and "p"
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153 | cgiarginfo arg_ainfo;
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154 |
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155 | arg_ainfo.shortname = "l";
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156 | arg_ainfo.longname = "language";
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157 | arg_ainfo.multiplechar = true;
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158 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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159 | arg_ainfo.argdefault = "en";
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160 | arg_ainfo.savedarginfo = cgiarginfo::must;
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161 | argsinfo.addarginfo (NULL, arg_ainfo);
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162 | }
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163 |
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164 | langaction::~langaction () {
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165 | }
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166 |
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167 | bool langaction::check_cgiargs (cgiargsinfoclass &/*argsinfo*/, cgiargsclass &args,
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168 | ostream &logout) {
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169 | // authenticate the user before allowing modifications
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170 | // args["uan"] = 1;
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171 | // args["ug"] = "langadmin";
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172 |
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173 | return true;
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174 | }
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175 |
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176 | void langaction::get_cgihead_info (cgiargsclass &/*args*/, recptprotolistclass * /*protos*/,
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177 | response_t &response,text_t &response_data,
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178 | ostream &/*logout*/) {
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179 | response = content;
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180 | response_data = "text/html";
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181 | }
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182 |
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183 | void langaction::define_internal_macros (displayclass &disp, cgiargsclass &args,
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184 | recptprotolistclass *protos, ostream &logout) {
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185 | text_t text = "";
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186 | text_t cmd = "";
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187 | text_t &arg_p = args["p"];
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188 | text_tarray pagenos;
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189 | text_t dir = filename_cat(gsdlhome, "tmp", "lang");
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190 | text_t pageno ="";
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191 | text_t lang = "";
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192 |
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193 | // argument for page is of the form 'macrofile_pageno' so
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194 | // we need to split the argument to get the proper page content
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195 | text_tarray splitarray;
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196 | splitchar(arg_p.begin(), arg_p.end(), '_', splitarray);
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197 |
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198 | arg_p = splitarray[0];
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199 | if (splitarray.size() > 1)
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200 | pageno = splitarray[splitarray.size()-1];
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201 |
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202 | if (pageno == "picklanguage")
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203 | pageno = "1";
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204 |
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205 | if (pageno.empty())
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206 | pageno = "picklanguage";
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207 |
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208 | //produce the picklanguage webpage
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209 | if (pageno == "picklanguage") {
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210 | cmd = "perl " + filename_cat(gsdlhome, "bin", "script", "picklanguage.pl");
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211 | if(gsdl_system(cmd,true,logout) != 0)
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212 | return;
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213 | define_webpage(disp, protos, logout, pageno, lang, dir, pagenos, text);
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214 | return;
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215 | }
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216 |
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217 | //creates output stream to argsfile (dir is gsdlhome/tmp/lang)
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218 | text_t argsfile = filename_cat(dir, "arguments.arg");
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219 | ofstream argsout(argsfile.getcstr(), ios::out);
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220 |
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221 | //informs user and returns if output stream not opened
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222 | if(!argsout) {
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223 | logout << "File " << argsfile.getcstr() << " could not be opened\n";
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224 | return;
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225 | }
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226 |
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227 | //ensures access permissions make the file world writable
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228 | text_t changemode = "chmod a+w ";
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229 | changemode += argsfile;
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230 | gsdl_system(changemode, false, logout);
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231 |
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232 | //write out the cgiargsclass passes as a parameter to the subroutine to the argsout file
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233 | argsout << args;
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234 |
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235 | //close the argsout output stream
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236 | argsout.close();
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237 |
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238 | //sets the current foreign language
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239 | if (args["ownchoice"] != "") {
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240 | lang = args["ownchoice"];
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241 | }
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242 | else if (args["hiddenlanguage"] != "") {
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243 | lang = args["hiddenlanguage"];
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244 | }
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245 | else {
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246 | lang = args["language"];
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247 | }
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248 | text_t baselanguage = "";
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249 |
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250 | //sets current base language
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251 | if (args["baselanguage"] != "") {
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252 | baselanguage = args["baselanguage"];
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253 | }
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254 |
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255 |
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256 | //calls the translator file to create HTML files
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257 | cmd = "perl " + filename_cat(gsdlhome, "bin", "script", "translator.pl") + " " + lang + " " + baselanguage;
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258 |
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259 | if ((gsdl_system(cmd, true, logout)) != 0) {
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260 | logout << "Process " << cmd.getcstr() << " did not execute.../;-D\n";
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261 | return;
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262 | }
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263 |
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264 | //if no more pages will set pageno to thankyou script
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265 | pagenos = get_pagenos(dir,logout);
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266 | if (pagenos.empty())
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267 | pageno = "thankyou";
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268 |
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269 |
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270 | text_t &submitargs = args[pageno];
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271 | text_t submit = "SUBMIT TRANSLATION >>";
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272 |
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273 | //if the SUBMIT TRANSLATION >> button has been pushed
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274 | if (text_t_substring(submitargs,submit)) {
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275 |
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276 | //create the command line for submitting the translation
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277 | cmd = "perl " + filename_cat(gsdlhome, "bin", "script", "submit_translation.pl") + " ";
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278 | cmd += (argsfile + " " + lang + " " + baselanguage);
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279 |
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280 | //give command to system to execute submission of translation
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281 | if((gsdl_system(cmd, true, logout)) != 0)
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282 | logout << "Process " << cmd.getcstr() << " did not execute\n";
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283 |
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284 | //increments which page is displayed when translation is submitted
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285 | for (text_tarray::iterator page_itr = pagenos.begin();
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286 | page_itr != pagenos.end();
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287 | page_itr++) {
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288 |
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289 | if (*page_itr == pageno) {
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290 | page_itr++;
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291 | if (page_itr != pagenos.end())
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292 | pageno = *page_itr;
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293 | else
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294 | pageno = "thankyou";
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295 |
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296 | break;
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297 | }
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298 | }
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299 | }
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300 | //want it to automatically load the next page here instead of reloading page
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301 | //that has just been translated with everything empty again.
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302 |
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303 | define_webpage(disp, protos, logout, pageno, lang, dir, pagenos, text);
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304 | }
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305 |
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306 | void langaction::define_webpage (displayclass &disp,
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307 | recptprotolistclass *protos, ostream &logout,
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308 | text_t &pageno, text_t &lang, text_t &dir,
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309 | text_tarray &pagenos, text_t &text) {
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310 |
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311 | // produces HTML page with the current pages contents
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312 | // formfile is the file that contains web-form for the
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313 | // current package whose name is stored in 'package'
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314 |
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315 | text_t formfile = filename_cat(dir, "package_forms");
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316 | formfile += ("/" + pageno + ".lang");
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317 |
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318 | ifstream readfile(formfile.getcstr(), ios::in);
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319 | if (!readfile) {
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320 | logout << "File " << formfile.getcstr() << " could not be found.\n";
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321 | return;
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322 | }
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323 |
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324 |
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325 | /* ============================ START WEB-FORM HTML CODE ============================ */
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326 | text += "\n<input type=hidden name=\"a\" value=\"lang\">";
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327 | text += "\n<input type=hidden name=\"p\" value=\"translang_";
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328 | text += pageno;
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329 | text += "\">\n";
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330 |
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331 | //if not a special case page display translation info
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332 | if ((pageno != "thankyou") && (pageno !="picklanguage")) {
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333 | text += "<center><strong>You are currently translating page ";
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334 | text += pageno;
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335 | text += " of ";
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336 | text += pagenos.size();
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337 | text += " in to ";
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338 | text += lang;
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339 | text += "</strong></center><p><p>\n";
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340 | }
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341 |
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342 | //read in HTML from file
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343 | while(readfile.getline(temp, BUFFSIZE-1)) {
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344 | text_t t_temp = temp;
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345 | text += t_temp;
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346 | text += "\n";
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347 | }
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348 | readfile.close();
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349 |
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350 | //if not a special case page display translation info
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351 | if ((pageno != "thankyou") && (pageno != "picklanguage")) {
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352 | text += "<center><strong>You are currently translating page ";
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353 | text += pageno;
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354 | text += " of ";
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355 | text += pagenos.size();
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356 | text += " in to ";
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357 | text += lang;
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358 | text += "</strong></center><br>\n";
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359 | }
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360 |
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361 |
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362 | /* ============================ END WEB-FORM HTML CODE ============================ */
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363 |
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364 | // THE FOLLOWING MACROS ARE DEFINED IN translang.dm MACRO FILE
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365 | // set the formcontent as the content of the form-page
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366 | disp.setmacro("formcontent", "translang", text);
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367 |
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368 | // set the action for the form
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369 | // disp.setmacro("formaction", "translang", "/cgi-bin/dg5/library");
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370 | disp.setmacro("formaction", "translang", "_gwcgi_");
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371 |
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372 | }
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373 |
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374 | bool langaction::do_action (cgiargsclass &args, recptprotolistclass * /*protos*/,
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375 | browsermapclass * /*browsers*/, displayclass &disp,
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376 | outconvertclass &outconvert, ostream &textout,
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377 | ostream &logout) {
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378 | text_t &arg_p = args["p"];
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379 |
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380 | textout << outconvert << disp << ("_" + arg_p + ":header_\n")
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381 | << ("_" + arg_p + ":content_\n")
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382 | << ("_" + arg_p + ":footer_\n");
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383 |
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384 | return true;
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385 | }
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386 |
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387 |
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388 |
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389 |
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