1 | /**********************************************************************
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2 | *
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3 | * cgiargs.h --
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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 | * $Id: cgiargs.h 928 2000-02-15 22:53:52Z kjm18 $
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25 | *
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26 | *********************************************************************/
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27 |
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28 |
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29 | #ifndef CGIARGS_H
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30 | #define CGIARGS_H
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31 |
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32 | #include "gsdlconf.h"
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33 | #include "text_t.h"
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34 |
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35 | #if defined(GSDL_USE_OBJECTSPACE)
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36 | # include <ospace\std\iostream>
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37 | #elif defined(GSDL_USE_IOS_H)
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38 | # include <iostream.h>
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39 | #else
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40 | # include <iostream>
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41 | #endif
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42 |
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43 | #if defined(GSDL_USE_OBJECTSPACE)
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44 | # include <ospace\std\map>
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45 | #elif defined(GSDL_USE_STL_H)
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46 | # include <map.h>
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47 | #else
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48 | # include <map>
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49 | #endif
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50 |
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51 |
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52 | // response_t is used to define what type of cgi header
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53 | // should be produced
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54 | enum response_t {location, content};
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55 |
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56 |
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57 | struct cgiarg_t {
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58 | void clear ();
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59 | cgiarg_t () {clear();}
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60 | cgiarg_t &operator=(const cgiarg_t &x);
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61 |
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62 | enum source_t {default_arg, compressed_arg, cgi_arg, program_arg};
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63 |
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64 | text_t value;
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65 | source_t source;
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66 | };
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67 |
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68 | bool operator==(const cgiarg_t &x, const cgiarg_t &y);
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69 | bool operator<(const cgiarg_t &x, const cgiarg_t &y);
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70 |
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71 | typedef map<text_t, cgiarg_t, lttext_t> cgiarg_tmap;
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72 |
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73 | // cgiargsclass is used to store a particular set
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74 | // of cgi arguments.
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75 | class cgiargsclass {
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76 | protected:
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77 | cgiarg_tmap args;
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78 |
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79 | public:
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80 | //type support for cgiarg_tmap
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81 | typedef cgiarg_tmap::iterator iterator;
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82 | typedef cgiarg_tmap::const_iterator const_iterator;
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83 | typedef cgiarg_tmap::reference reference;
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84 | typedef cgiarg_tmap::const_reference const_reference;
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85 | typedef cgiarg_tmap::size_type size_type;
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86 | typedef cgiarg_tmap::difference_type difference_type;
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87 | typedef cgiarg_tmap::const_reverse_iterator const_reverse_iterator;
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88 | typedef cgiarg_tmap::reverse_iterator reverse_iterator;
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89 |
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90 | // constructors
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91 | cgiargsclass ();
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92 |
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93 | // basic container support
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94 | iterator begin () {return args.begin();}
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95 | const_iterator begin () const {return args.begin();}
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96 | iterator end () {return args.end();}
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97 | const_iterator end () const {return args.end();}
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98 |
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99 | void erase(iterator pos) {args.erase(pos);}
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100 | void erase(iterator first, iterator last) {args.erase(first, last);}
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101 | cgiargsclass &operator=(const cgiargsclass &x) {args=x.args;return *this;}
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102 |
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103 | bool empty () const {return args.empty();}
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104 | size_type size() const {return args.size();}
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105 |
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106 |
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107 | // added functionality
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108 | void clear () {args.erase(args.begin(),args.end());}
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109 |
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110 | // setdefaultarg, setdefaultintarg, and setdefaultcarg will
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111 | // only set the argument if it is not already set
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112 | // getargs returns NULL if there isn't an entry with
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113 | // 'key' already defined, getintarg returns 0 if there wasn't an
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114 | // entry with 'key' defined and operator[] returns "" if
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115 | // 'key' wasn't already defined (and sets 'key'="").
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116 | void setarg (const text_t &key, const text_t &value,
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117 | cgiarg_t::source_t source=cgiarg_t::program_arg);
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118 | void setdefaultarg (const text_t &key, const text_t &value,
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119 | cgiarg_t::source_t source=cgiarg_t::default_arg);
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120 | void setintarg (const text_t &key, int value,
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121 | cgiarg_t::source_t source=cgiarg_t::program_arg);
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122 | void setdefaultintarg (const text_t &key, int value,
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123 | cgiarg_t::source_t source=cgiarg_t::default_arg);
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124 | void setcarg (const text_t &key, unsigned short c,
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125 | cgiarg_t::source_t source=cgiarg_t::program_arg);
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126 | void setdefaultcarg (const text_t &key, unsigned short c,
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127 | cgiarg_t::source_t source=cgiarg_t::default_arg);
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128 | text_t *getarg (const text_t &key);
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129 | int getintarg (const text_t &key);
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130 | text_t &operator[] (const text_t &key) {return args[key].value;}
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131 | cgiarg_t &lookupcgiarg (const text_t &key) {return args[key];}
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132 | };
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133 |
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134 | // stream operators to print cgi arguments for debugging purposes
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135 | ostream &operator<<(ostream &outs, const cgiargsclass &args);
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136 |
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137 |
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138 |
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139 | // cgiarginfo holds information relating to a cgi argument
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140 | class cgiarginfo {
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141 | public:
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142 | cgiarginfo ();
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143 |
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144 | // shortname is the name used in cgi arguments
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145 | text_t shortname;
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146 |
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147 | // longname is the name used when giving information
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148 | // about the argument and to spot name duplication
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149 | text_t longname;
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150 |
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151 | // multiplechar should be set to true if the value can be
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152 | // more than one character long
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153 | bool multiplechar;
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154 |
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155 | // multiplevalue should be set to true the argument may have
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156 | // multiple values (as is the case when multiple checkboxes
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157 | // use the same name)
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158 | bool multiplevalue;
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159 |
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160 | // defaultstatus_t indicates how good the default is when different
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161 | // defaults are given for one argument. "none" means there is no default
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162 | // (a default might be given elsewhere). "weak" is a basic guess that
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163 | // doesn't hold much weight, "good" is a better guess, "config" was a default
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164 | // given in a configuration file, and "imperative" means it must not
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165 | // be overriden at any costs (unless there is another "imperative"...)
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166 | enum defaultstatus_t {none=0, weak=1, good=2, config=3, imperative=4};
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167 |
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168 | defaultstatus_t defaultstatus;
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169 | text_t argdefault; // a default value
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170 |
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171 | // savedarginfo_t indicates whether the argument should be saved
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172 | // between pages (e.g. using the compressed argument) or not. The
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173 | // value of an argument can change from "can" to "mustnot" and
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174 | // "can" to "must" but not "mustnot" to "must" or "must" to "mustnot".
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175 | enum savedarginfo_t {mustnot, can, must};
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176 |
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177 | savedarginfo_t savedarginfo;
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178 | };
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179 |
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180 | bool operator==(const cgiarginfo &x, const cgiarginfo &y);
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181 | bool operator<(const cgiarginfo &x, const cgiarginfo &y);
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182 |
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183 | typedef map<text_t, cgiarginfo, lttext_t> argsinfomap;
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184 |
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185 | // contains a list of cgi argument information
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186 | class cgiargsinfoclass {
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187 | protected:
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188 | argsinfomap argsinfo;
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189 |
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190 | public:
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191 | // type support for arginfomap
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192 | typedef argsinfomap::iterator iterator;
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193 | typedef argsinfomap::const_iterator const_iterator;
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194 | typedef argsinfomap::reference reference;
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195 | typedef argsinfomap::const_reference const_reference;
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196 | typedef argsinfomap::size_type size_type;
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197 | typedef argsinfomap::difference_type difference_type;
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198 | typedef argsinfomap::const_reverse_iterator const_reverse_iterator;
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199 | typedef argsinfomap::reverse_iterator reverse_iterator;
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200 |
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201 | // constructors
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202 | cgiargsinfoclass ();
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203 |
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204 | // basic container support
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205 | iterator begin () {return argsinfo.begin();}
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206 | const_iterator begin () const {return argsinfo.begin();}
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207 | iterator end () {return argsinfo.end();}
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208 | const_iterator end () const {return argsinfo.end();}
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209 |
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210 | void erase(iterator pos) {argsinfo.erase(pos);}
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211 | void erase(iterator first, iterator last) {argsinfo.erase(first, last);}
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212 | cgiargsinfoclass &operator=(const cgiargsinfoclass &x) {argsinfo=x.argsinfo;return *this;}
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213 |
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214 | bool empty () const {return argsinfo.empty();}
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215 | size_type size() const {return argsinfo.size();}
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216 |
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217 |
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218 | // added functionality
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219 | void clear () {argsinfo.erase(argsinfo.begin(),argsinfo.end());}
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220 |
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221 | // addarginfo will combine the information with the present
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222 | // information. If name clashes were detected then the information
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223 | // will be written to logout and addarginfo will return false. No
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224 | // processing with the arguments should be done if this happens
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225 | // as the results will be meaningless.
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226 | bool addarginfo (ostream *logout, const cgiarginfo &info);
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227 | bool addarginfo (ostream *logout, const cgiargsinfoclass &info);
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228 |
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229 | cgiarginfo *getarginfo (const text_t &key);
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230 | const cgiarginfo *getarginfo (const text_t &key) const;
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231 | cgiarginfo &operator[] (const text_t &key) {return argsinfo[key];}
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232 | };
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233 |
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234 |
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235 | #endif
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236 |
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237 |
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238 |
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