[4] | 1 | #include <string.h>
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| 2 | #include <stdio.h>
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| 3 | #include <stdlib.h>
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| 4 | #include <ctype.h>
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| 5 | #include <time.h>
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| 6 | #include "libinterface.h"
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| 7 | #include "cgiargs.h"
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| 8 |
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| 9 | #include <assert.h>
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| 10 |
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| 11 | ///////////////////////
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| 12 | // support functions //
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| 13 | ///////////////////////
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| 14 |
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| 15 | unsigned short hexdigit (unsigned short c)
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| 16 | {
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| 17 | if (c >= '0' && c <= '9') return (c-'0');
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| 18 | if (c >= 'a' && c <= 'f') return (c-'a'+10);
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| 19 | if (c >= 'A' && c <= 'F') return (c-'A'+10);
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| 20 | return c;
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| 21 | }
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| 22 |
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| 23 |
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| 24 | void c2hex (unsigned short c, text_t &t)
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| 25 | {
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| 26 | t.clear();
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| 27 |
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| 28 | if (c >= 256)
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| 29 | {
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| 30 | t = "20"; // ' '
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| 31 | return;
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| 32 | }
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| 33 |
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| 34 | unsigned short o1, o2;
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| 35 |
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| 36 | o1 = (c/16) % 16;
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| 37 | o2 = c % 16;
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| 38 | if (o1 >= 10) o1 += 'a' - 10;
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| 39 | else o1 += '0';
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| 40 | if (o2 >= 10) o2 += 'a' - 10;
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| 41 | else o2 += '0';
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| 42 |
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| 43 | t.push_back(o1);
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| 44 | t.push_back(o2);
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| 45 | }
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| 46 |
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| 47 | // convert %xx and + to their appropriate equivalents
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| 48 | void decode (text_t &argstr)
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| 49 | {
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| 50 | text_t::iterator in = argstr.begin();
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| 51 | text_t::iterator out = in;
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| 52 | text_t::iterator end = argstr.end();
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| 53 |
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| 54 | while (in != end)
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| 55 | {
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| 56 | if (*in == '+') *out = ' ';
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| 57 |
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| 58 | else if (*in == '%')
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| 59 | {
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| 60 | unsigned short c = '%';
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| 61 | in++;
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| 62 | if (in != end)
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| 63 | {
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| 64 | c = hexdigit (*in);
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| 65 | in++;
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| 66 | }
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| 67 | if (in != end && c < 16) // sanity check on the previous character
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| 68 | {
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| 69 | c = c*16 + hexdigit (*in);
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| 70 | }
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| 71 |
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| 72 | *out = c;
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| 73 | }
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| 74 | else *out = *in;
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| 75 |
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| 76 | if (in != end) in++;
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| 77 | out++;
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| 78 | }
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| 79 |
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| 80 | // remove the excess characters
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| 81 | argstr.erase (out, end);
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| 82 | }
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| 83 |
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| 84 |
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| 85 | // split up the cgi arguments
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| 86 | void parse_cgi_args (text_t argstr, cgiargsclass &args)
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| 87 | {
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| 88 | args.clear();
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| 89 |
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| 90 | text_t::iterator here = argstr.begin();
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| 91 | text_t::iterator end = argstr.end();
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| 92 | text_t key, value;
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| 93 |
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| 94 | // extract out the key=value pairs
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| 95 | while (here != end)
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| 96 | {
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| 97 | // get the next key and value pair
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| 98 | here = getdelimitstr (here, end, '=', key);
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| 99 | here = getdelimitstr (here, end, '&', value);
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| 100 |
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| 101 | // convert %xx and + to their appropriate equivalents
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| 102 | decode (value);
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| 103 | // store this key=value pair
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| 104 | if (!key.empty()) args.setarg (key, value);
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| 105 | }
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| 106 | }
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| 107 |
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| 108 | text_t cgisafe (text_t &intext)
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| 109 | {
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| 110 | text_t outtext;
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| 111 |
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| 112 | text_t::iterator here = intext.begin ();
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| 113 | text_t::iterator end = intext.end ();
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| 114 | unsigned short c;
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| 115 | text_t ttmp;
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| 116 |
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| 117 | while (here != end)
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| 118 | {
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| 119 | c = *here;
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| 120 | if (((c >= 'a') && (c <= 'z')) ||
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| 121 | ((c >= 'A') && (c <= 'Z')) ||
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| 122 | ((c >= '0') && (c <= '9'))) {
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| 123 | // alphanumeric character
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| 124 | outtext.push_back(c);
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| 125 | } else {
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| 126 | // non-alphnumeric character
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| 127 | outtext.push_back('%');
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| 128 | c2hex(c, ttmp);
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| 129 | outtext += ttmp;
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| 130 | }
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| 131 |
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| 132 | here++;
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| 133 | }
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| 134 |
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| 135 | return outtext;
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| 136 | }
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| 137 |
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| 138 | //////////////////////////////
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| 139 | // methods for libinterface //
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| 140 | //////////////////////////////
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| 141 |
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| 142 | // constructor
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| 143 |
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| 144 | libinterface::libinterface()
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| 145 | {
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| 146 | browse = NULL;
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| 147 | }
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| 148 |
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| 149 | void libinterface::setgsdlhome (const text_t &thegsdlhome)
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| 150 | {
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| 151 | gsdlhome = thegsdlhome;
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| 152 | setmacroshome (thegsdlhome);
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| 153 | setgdbmhome (thegsdlhome);
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| 154 | setindexhome (thegsdlhome);
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| 155 | }
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| 156 |
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| 157 | void libinterface::setmacroshome (const text_t &themacroshome)
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| 158 | {
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| 159 | macroshome = themacroshome;
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| 160 | }
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| 161 |
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| 162 | void libinterface::setgdbmhome (const text_t &thegdbmhome)
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| 163 | {
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| 164 | gdbmhome = thegdbmhome;
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| 165 | gdbm.setgdbmhome(gdbmhome);
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| 166 | }
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| 167 |
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| 168 | void libinterface::setindexhome (const text_t &theindexhome)
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| 169 | {
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| 170 | indexhome = theindexhome;
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| 171 | search.setindexhome(theindexhome);
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| 172 | }
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| 173 |
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| 174 | void libinterface::sethttpprefix (const text_t &thehttpprefix)
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| 175 | {
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| 176 | httpprefix = thehttpprefix;
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| 177 | }
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| 178 |
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| 179 | void libinterface::setgwcgi (const text_t &thegwcgi)
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| 180 | {
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| 181 | gwcgi = thegwcgi;
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| 182 | }
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| 183 |
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| 184 | // init should be called after the various homes are set,
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| 185 | // it returns 'false' on failure and 'true' on success
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| 186 | bool libinterface::init ()
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| 187 | {
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| 188 | set_default_index();
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| 189 | text_t collection = get_collection_name();
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| 190 |
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| 191 | // load up default macro files -- these shouldn't have absolute file names
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| 192 | #ifdef __WIN32__
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| 193 | disp.loaddefaultmacros(macroshome + "\\macros\\base.dm");
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| 194 | disp.loaddefaultmacros(macroshome + "\\macros\\browse.dm");
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| 195 | disp.loaddefaultmacros(macroshome + "\\macros\\text.dm");
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| 196 | disp.loaddefaultmacros(macroshome + "\\macros\\query.dm");
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| 197 | disp.loaddefaultmacros(macroshome + "\\macros\\help.dm");
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| 198 | disp.loaddefaultmacros(macroshome + "\\macros\\gsdl.dm");
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| 199 | disp.loaddefaultmacros(macroshome + "\\macros\\pref.dm");
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| 200 | #else
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| 201 | disp.loaddefaultmacros(macroshome + "/macros/base.dm");
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| 202 | disp.loaddefaultmacros(macroshome + "/macros/browse.dm");
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| 203 | disp.loaddefaultmacros(macroshome + "/macros/text.dm");
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| 204 | disp.loaddefaultmacros(macroshome + "/macros/query.dm");
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| 205 | disp.loaddefaultmacros(macroshome + "/macros/help.dm");
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| 206 | disp.loaddefaultmacros(macroshome + "/macros/gsdl.dm");
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| 207 | disp.loaddefaultmacros(macroshome + "/macros/pref.dm");
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| 208 | #endif
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| 209 |
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| 210 | srand(time(NULL));
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| 211 |
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| 212 | return collection_init(collection);
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| 213 | }
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| 214 |
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| 215 |
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| 216 | // examine the cgi arguments and create the appropriate page,
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| 217 | // outputing the page to textout and any debug information to logout
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| 218 | //
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| 219 | // returns LI_NOERROR on success, LI_LOADDATABASEFAILED on failure
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| 220 | int libinterface::getpage (const text_t &argstr, ostream &textout, ostream &logout)
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| 221 | {
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| 222 | int err = LI_NOERROR;
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| 223 |
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| 224 | gdbm.setlogout (&logout); // make the output go where they want!
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| 225 |
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| 226 | cgiargsclass args;
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| 227 |
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| 228 | parse_cgi_args (argstr, args);
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| 229 | expand_compressed_args (args);
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| 230 | add_default_args (args);
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| 231 | check_args (args);
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| 232 |
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| 233 | lastcomparg = get_compressed_args (args);
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| 234 |
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| 235 | logout << args;
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| 236 |
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| 237 | text_t &arg_a = args["a"];
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| 238 | if (arg_a == "q") err = query_action (args, textout, logout);
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| 239 | else if (arg_a == "b") browse_action (args, textout, logout);
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| 240 | else if (arg_a == "t") document_action (args, textout, logout);
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| 241 | else if (arg_a == "p") page_action (args, textout, logout);
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| 242 | else
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| 243 | {
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| 244 | // output error page
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| 245 | }
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| 246 |
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| 247 | return err;
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| 248 | }
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| 249 |
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| 250 | // the arg config string is used to do processing on the arguments
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| 251 | // entries take the form argname[defaultvalue]
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| 252 | // if the argument name is preceeded by a "+" it means that the
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| 253 | // value may be more than one character long
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| 254 | // the main state variable missed on this list is "q" the query string
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| 255 | void libinterface::get_arg_config (text_t &argconfigstr)
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| 256 | {
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| 257 | argconfigstr =
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| 258 | "a[p]" // action: q=query, b=browse, t=targetdoc, p=page
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| 259 | "t[1]" // query type: 0=boolean, 1=ranked
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| 260 | "i[c]" // index: c=chapter, p=paragraph, t=title, b=book
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| 261 | "k[1]" // casefolding: 0=off, 1=on
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| 262 | "s[0]" // stemming: 0=off, 1=on
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| 263 | "+p[home]" // page
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| 264 | "+c[unu2]" // collection
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| 265 | "+r[1]" // results from
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| 266 | "+d[C.1]" // the target document
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| 267 | "+j[11]" // partial index: 11=all, 10=f&n, 01=other
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| 268 | "+m[100]" // maxdocs
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| 269 | "+o[20]" // hits per page
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| 270 | "v[0]" // version: 0=text+graphics, 1=text
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| 271 | "f[0]"; // query box size: 0=normal, 1=big
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| 272 |
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| 273 | }
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| 274 |
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| 275 | text_t::iterator libinterface::get_next_config_arg (text_t::iterator first,
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| 276 | text_t::iterator last,
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| 277 | text_t &argname,
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| 278 | text_t &defaultvalue,
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| 279 | bool &longarg)
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| 280 | {
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| 281 | first = getdelimitstr (first, last, '[', argname);
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| 282 | first = getdelimitstr (first, last, ']', defaultvalue);
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| 283 | longarg = false;
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| 284 |
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| 285 | if (!argname.empty() && (argname[0] == '+'))
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| 286 | {
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| 287 | argname.erase(argname.begin(), argname.begin()+1);
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| 288 | longarg = true;
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| 289 | }
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| 290 |
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| 291 | return first;
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| 292 | }
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| 293 |
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| 294 | text_t libinterface::get_compressed_args (cgiargsclass &args)
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| 295 | {
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| 296 | text_t argconfigstr; get_arg_config (argconfigstr);
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| 297 | text_t arg_e;
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| 298 | text_t argname, defaultvalue;
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| 299 | text_t *argvalue;
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| 300 | bool longarg;
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| 301 |
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| 302 | text_t::iterator here = argconfigstr.begin();
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| 303 | text_t::iterator end = argconfigstr.end();
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| 304 | while (here != end)
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| 305 | {
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| 306 | here = get_next_config_arg (here, end, argname, defaultvalue, longarg);
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| 307 |
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| 308 | if (!argname.empty())
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| 309 | {
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| 310 | argvalue = args.getarg (argname);
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| 311 | if (argvalue == NULL) arg_e += defaultvalue;
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| 312 | else arg_e += *argvalue;
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| 313 |
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| 314 | if (longarg) arg_e += "-";
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| 315 | }
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| 316 | }
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| 317 |
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| 318 | return arg_e;
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| 319 | }
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| 320 |
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| 321 |
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| 322 | // the compressed options should never override explicit options
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| 323 | // but they should always be expanded before add_default_args is
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| 324 | // called
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| 325 | void libinterface::expand_compressed_args (cgiargsclass &args)
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| 326 | {
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| 327 | text_t *arg_e = args.getarg("e");
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| 328 |
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| 329 | // see if there is compressed options
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| 330 | if (arg_e != NULL)
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| 331 | {
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| 332 | text_t argconfigstr; get_arg_config (argconfigstr);
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| 333 | text_t argname, defaultvalue, argvalue;
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| 334 | bool longarg;
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| 335 |
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| 336 | text_t::iterator confighere = argconfigstr.begin();
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| 337 | text_t::iterator configend = argconfigstr.end();
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| 338 |
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| 339 | text_t::iterator arghere = arg_e->begin();
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| 340 | text_t::iterator argend = arg_e->end();
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| 341 | while (confighere != configend && arghere != argend)
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| 342 | {
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| 343 | confighere = get_next_config_arg (confighere, configend, argname,
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| 344 | defaultvalue, longarg);
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| 345 | if (!argname.empty())
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| 346 | {
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| 347 | if (longarg)
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| 348 | {
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| 349 | arghere = getdelimitstr (arghere, argend, '-', argvalue);
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| 350 | if (!argvalue.empty()) args.setdefaultarg (argname, argvalue);
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| 351 | }
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| 352 | else
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| 353 | {
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| 354 | args.setdefaultcarg (argname,*arghere);
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| 355 | arghere++;
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| 356 | }
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| 357 | }
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| 358 | }
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| 359 | }
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| 360 | }
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| 361 |
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| 362 |
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| 363 | void libinterface::add_default_args (cgiargsclass &args)
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| 364 | {
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| 365 | text_t argconfigstr; get_arg_config (argconfigstr);
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| 366 | text_t argname, defaultvalue;
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| 367 | bool longarg;
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| 368 |
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| 369 | text_t::iterator confighere = argconfigstr.begin();
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| 370 | text_t::iterator configend = argconfigstr.end();
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| 371 | while (confighere != configend)
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| 372 | {
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| 373 | confighere = get_next_config_arg (confighere, configend, argname,
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| 374 | defaultvalue, longarg);
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| 375 | if (!argname.empty()) args.setdefaultarg (argname, defaultvalue);
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| 376 | }
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| 377 |
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| 378 | // the query string and format string are not included in the argument configuration string
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| 379 | args.setdefaultarg ("q", ""); // the default query string is ""
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| 380 | args.setdefaultarg ("g", "00");
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| 381 | args.setdefaultarg ("x", "0");
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| 382 | }
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| 383 |
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| 384 |
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| 385 | // check and attempt to fix an problems encountered in the list
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| 386 | // of cgi arguments
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| 387 | void libinterface::check_args (cgiargsclass &args)
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| 388 | {
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| 389 | text_t collection = get_collection_name();
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| 390 | args.setarg("c", collection);
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| 391 | }
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| 392 |
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| 393 |
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| 394 | void libinterface::define_general_macros (cgiargsclass &args, ostream &logout)
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| 395 | {
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| 396 | disp.setmacro("httpprefix", "Global", httpprefix);
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| 397 | disp.setmacro("gwcgi", "Global", gwcgi);
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| 398 |
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| 399 | disp.setmacro("collection", "Global", cgisafe(args["c"]));
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| 400 | disp.setmacro("compressedoptions", "Global", get_compressed_args(args));
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| 401 | disp.setmacro("urlsafequerystring", "Global", cgisafe(args["q"]));
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| 402 |
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| 403 | // need to escape any quotes in querystring to prevent them upsetting the html
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| 404 | text_t querystring;
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| 405 | text_t::iterator here = args["q"].begin();
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| 406 | text_t::iterator end = args["q"].end();
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| 407 | while (here != end) {
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| 408 | if (*here == '"') querystring += """;
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| 409 | else querystring.push_back(*here);
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| 410 | here ++;
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| 411 | }
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| 412 | disp.setmacro("querystring", "Global", querystring);
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| 413 |
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| 414 |
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| 415 | if (args.getintarg("x") == 0) disp.setmacro("notdetached", "Global", "1");
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| 416 | if (args["d"][0] == 'T') disp.setmacro("istitle", "Global", "1");
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| 417 |
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| 418 | int i = rand();
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| 419 | disp.setmacro("pagedest", "Global", text_t(i));
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| 420 |
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| 421 | // define the macro for the "g" argument
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| 422 | disp.setmacro("g", "Global", args["g"]);
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| 423 | }
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| 424 |
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| 425 |
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| 426 | // prepare_page prepares to write out a page using the current
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| 427 | // page parameters and defines any general macros
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| 428 | void libinterface::prepare_page (cgiargsclass &args, ostream &logout)
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| 429 | {
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| 430 | // get page parameters
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| 431 | text_t pageparams = text_t("collection=") + args["c"];
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| 432 | if (args.getintarg("u") == 1) pageparams += ",style=htmlonly";
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| 433 | if (args.getintarg("v") == 1) pageparams += ",version=text";
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| 434 | if (args.getintarg("f") == 1) pageparams += ",queryversion=big";
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| 435 |
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| 436 | disp.openpage(pageparams, MACROPRECEDENCE);
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| 437 | define_general_macros(args, logout);
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| 438 | define_collection_macros(args, logout);
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| 439 | }
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| 440 |
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| 441 | void libinterface::set_query_params (cgiargsclass &args, queryparamclass &queryparams)
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| 442 | {
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| 443 | queryparams.collection = args["c"];
|
---|
| 444 | assemble_index (args, queryparams.search_index);
|
---|
| 445 | queryparams.querystring = args["q"];
|
---|
| 446 | format_querystring (queryparams.querystring);
|
---|
| 447 | queryparams.search_type = args.getintarg ("t");
|
---|
| 448 | queryparams.casefolding = args.getintarg ("k");
|
---|
| 449 | queryparams.stemming = args.getintarg ("s");
|
---|
| 450 | queryparams.maxdocs = args.getintarg ("m");
|
---|
| 451 | }
|
---|
| 452 |
|
---|
| 453 | void libinterface::format_querystring (text_t &querystring)
|
---|
| 454 | {
|
---|
| 455 | text_t formattedstring;
|
---|
| 456 | quotedstring.clear();
|
---|
| 457 |
|
---|
| 458 | text_t::iterator here = querystring.begin();
|
---|
| 459 | text_t::iterator end = querystring.end();
|
---|
| 460 | int foundquote = 0;
|
---|
| 461 |
|
---|
| 462 | // want to remove ()|!& from querystring so boolean queries are just
|
---|
| 463 | // "all the words" queries
|
---|
| 464 | while (here != end) {
|
---|
| 465 | if (*here == '(' || *here == ')' || *here == '|' ||
|
---|
| 466 | *here == '!' || *here == '&') {
|
---|
| 467 | formattedstring += " ";
|
---|
| 468 | } else {
|
---|
| 469 | if (*here == '"') {
|
---|
| 470 | if (foundquote) {foundquote = 0; quotedstring.push_back(*here);}
|
---|
| 471 | else foundquote = 1;
|
---|
| 472 | } else {
|
---|
| 473 | formattedstring.push_back(*here);
|
---|
| 474 | }
|
---|
| 475 | if (foundquote) quotedstring.push_back(*here);
|
---|
| 476 | }
|
---|
| 477 | here ++;
|
---|
| 478 | }
|
---|
| 479 | querystring = formattedstring + quotedstring;
|
---|
| 480 | }
|
---|
| 481 |
|
---|
| 482 | void libinterface::define_query_macros (cgiargsclass &args,
|
---|
| 483 | queryparamclass &queryparams,
|
---|
| 484 | queryresultsclass &queryresults,
|
---|
| 485 | ostream &logout)
|
---|
| 486 | {
|
---|
| 487 | int numdocs = queryresults.getnumdocs();
|
---|
| 488 | int numterms = queryresults.getnumterms();
|
---|
| 489 | disp.setmacro("querysize", "query", args["f"]);
|
---|
| 490 | disp.setmacro("haveresults", "query", numdocs);
|
---|
| 491 |
|
---|
| 492 | // set the display frequency macro
|
---|
| 493 | text_t freqmsg = "_textfm1_";
|
---|
| 494 |
|
---|
| 495 | int first = 1;
|
---|
| 496 | for (int i = 0; i < numterms; i++) {
|
---|
| 497 | if (first == 0) freqmsg += "; ";
|
---|
| 498 | first = 0;
|
---|
| 499 | freqmsg += queryresults.terms[i].termstr + ": " + queryresults.terms[i].termfreq;
|
---|
| 500 | }
|
---|
| 501 | if (!quotedstring.empty()) freqmsg += "<br><i>post-processed to find " + quotedstring + "</i>\n";
|
---|
| 502 | disp.setmacro("freqmsg", "query", freqmsg);
|
---|
| 503 |
|
---|
| 504 | // set the result line macro
|
---|
| 505 |
|
---|
| 506 | text_t resline;
|
---|
| 507 |
|
---|
| 508 | if (numdocs >= queryparams.maxdocs)
|
---|
| 509 | resline.setcstr("_textmt2_");
|
---|
| 510 |
|
---|
| 511 | if (numdocs == 0) {
|
---|
| 512 | resline.setcstr("_textndmtq_");
|
---|
| 513 | } else if (numdocs == 1) {
|
---|
| 514 | resline += text_t(numdocs) + text_t(" _textdmtq2_.");
|
---|
| 515 | } else {
|
---|
| 516 | resline += text_t(numdocs) + text_t(" _textdmtq3_.");
|
---|
| 517 | }
|
---|
| 518 |
|
---|
| 519 | disp.setmacro("resultline", "query", resline);
|
---|
| 520 |
|
---|
| 521 | // define_collection_macros (args, logout);
|
---|
| 522 |
|
---|
| 523 | if (queryresults.getnumdocs() > 0) {
|
---|
| 524 | docLinks(args, queryresults, logout);
|
---|
| 525 | }
|
---|
| 526 | }
|
---|
| 527 |
|
---|
| 528 |
|
---|
| 529 | // set the _links_ macro to create the links between pages of query results
|
---|
| 530 | void libinterface::docLinks (cgiargsclass &args,
|
---|
| 531 | queryresultsclass &queryresults,
|
---|
| 532 | ostream &logout)
|
---|
| 533 | {
|
---|
| 534 | text_t links;
|
---|
| 535 | int a, b, documents, nextfirst, nextlast, prevfirst, prevlast;
|
---|
| 536 | int results_from = args.getintarg("r");
|
---|
| 537 | int hitsperpage = args.getintarg("o");
|
---|
| 538 |
|
---|
| 539 | documents = queryresults.getnumdocs();
|
---|
| 540 |
|
---|
| 541 | a = results_from;
|
---|
| 542 | b = a + (hitsperpage - 1);
|
---|
| 543 |
|
---|
| 544 | // make sure a and b are in range
|
---|
| 545 | if (a < 1) a = 1;
|
---|
| 546 | if (b < 1) b = 1;
|
---|
| 547 | if (a > documents) a = documents;
|
---|
| 548 | if (b > documents) b = documents;
|
---|
| 549 |
|
---|
| 550 | links.setcstr("<table cellspacing=0 cellpadding=0 border=0 width=\"100%\">\n");
|
---|
| 551 | links += "<tr valign=bottom>\n";
|
---|
| 552 | links += "<td align=left>\n";
|
---|
| 553 | links += "<_font_>\n";
|
---|
| 554 |
|
---|
| 555 | // previous page link
|
---|
| 556 | if (a > 1) {
|
---|
| 557 | prevlast = a - 1;
|
---|
| 558 | prevfirst = a - hitsperpage;
|
---|
| 559 |
|
---|
| 560 | links += "<p><a href=\"_httpqueryresults_&r=";
|
---|
| 561 | links += prevfirst;
|
---|
| 562 | links += "\">_iconprev__textmatches_ ";
|
---|
| 563 | links += prevfirst;
|
---|
| 564 | links += " - ";
|
---|
| 565 | links += prevlast;
|
---|
| 566 | links += "</a>\n";
|
---|
| 567 | }
|
---|
| 568 |
|
---|
| 569 | links += "</font>\n";
|
---|
| 570 | links += "</td><td width=100></td><td align=right>\n";
|
---|
| 571 | links += "<_font_>\n";
|
---|
| 572 |
|
---|
| 573 | // next page link
|
---|
| 574 | if (b < documents) {
|
---|
| 575 | nextfirst = b + 1;
|
---|
| 576 | nextlast = b + hitsperpage;
|
---|
| 577 | if (nextlast > documents) nextlast = documents;
|
---|
| 578 |
|
---|
| 579 | links += "<p><a href=\"_httpqueryresults_&r=";
|
---|
| 580 | links += nextfirst;
|
---|
| 581 | links += "\">_textmatches_ ";
|
---|
| 582 | links += nextfirst;
|
---|
| 583 | links += " - ";
|
---|
| 584 | links += nextlast ;
|
---|
| 585 | links += "_iconnext_</a>\n";
|
---|
| 586 | }
|
---|
| 587 |
|
---|
| 588 | links += "</font>\n";
|
---|
| 589 | links += "</td></tr></table>\n";
|
---|
| 590 |
|
---|
| 591 | disp.setmacro("links", "query", links);
|
---|
| 592 | }
|
---|
| 593 |
|
---|
| 594 |
|
---|
| 595 | // returns LI_NOERROR on success, LI_LOADDATABASEFAILED on failure
|
---|
| 596 | int libinterface::do_query(cgiargsclass &args, queryparamclass &queryparams,
|
---|
| 597 | queryresultsclass &queryresults, ostream &logout)
|
---|
| 598 | {
|
---|
| 599 | set_query_params(args, queryparams);
|
---|
| 600 |
|
---|
| 601 | if (!queryparams.querystring.empty()) {
|
---|
| 602 | // do the query - the results are returned in queryresults
|
---|
| 603 | if (!search.search(queryparams, queryresults)) {
|
---|
| 604 | logout << "ERROR: database didn't load\n";
|
---|
| 605 | return LI_LOADDATABASEFAILED;
|
---|
| 606 | }
|
---|
| 607 | }
|
---|
| 608 | return LI_NOERROR;
|
---|
| 609 | }
|
---|
| 610 |
|
---|
| 611 | ////////////////////////////////////////////////////////////////////////////////////////
|
---|
| 612 | // query_action is called whenever a search is to be carried out (i.e. when the
|
---|
| 613 | // 'a' parameter == 'q') - query calls the mgsearch search() function (via do_query()) to
|
---|
| 614 | // carry out the search then displays the first page of results.
|
---|
| 615 | //
|
---|
| 616 | // returns LI_NOERROR on success, LI_LOADDATABASEFAILED on failure
|
---|
| 617 | int libinterface::query_action (cgiargsclass &args, ostream &textout, ostream &logout)
|
---|
| 618 | {
|
---|
| 619 | int err = LI_NOERROR;
|
---|
| 620 |
|
---|
| 621 | queryparamclass queryparams;
|
---|
| 622 | queryresultsclass queryresults;
|
---|
| 623 |
|
---|
| 624 | err = do_query(args, queryparams, queryresults, logout);
|
---|
| 625 |
|
---|
| 626 | // prepare to print out the page
|
---|
| 627 | prepare_page(args, logout);
|
---|
| 628 | define_query_macros(args, queryparams, queryresults, logout);
|
---|
| 629 |
|
---|
| 630 | // print out the query page
|
---|
| 631 | textout << text_t2ascii << disp << "_query:header_\n";
|
---|
| 632 |
|
---|
| 633 | // output query results if there is a query string -
|
---|
| 634 | // otherwise output help text
|
---|
| 635 | if (!queryparams.querystring.empty())
|
---|
| 636 | {
|
---|
| 637 | displayresults (args, textout, logout, queryresults);
|
---|
| 638 | }
|
---|
| 639 | else
|
---|
| 640 | {
|
---|
| 641 | textout << text_t2ascii << disp << "_query:noqueryheader_\n";
|
---|
| 642 | }
|
---|
| 643 |
|
---|
| 644 | textout << text_t2ascii << disp << "_query:footer_\n";
|
---|
| 645 |
|
---|
| 646 | return err;
|
---|
| 647 | }
|
---|
| 648 |
|
---|
| 649 | void libinterface::displayresults (cgiargsclass &args, ostream &textout, ostream &logout,
|
---|
| 650 | queryresultsclass &queryresults)
|
---|
| 651 | {
|
---|
| 652 | textout << text_t2ascii << disp << "_query:queryheader_";
|
---|
| 653 |
|
---|
| 654 |
|
---|
| 655 | int startresults = args.getintarg("r") - 1;
|
---|
| 656 | int numresults = args.getintarg("o");
|
---|
| 657 |
|
---|
| 658 | textout << text_t2ascii << "<table cellspacing=4>\n";
|
---|
| 659 | for (int i=startresults; i < startresults+numresults; i++)
|
---|
| 660 | {
|
---|
| 661 | displaydocsummary (args, textout, logout, queryresults, i);
|
---|
| 662 | }
|
---|
| 663 | textout << text_t2ascii << "</table>\n\n";
|
---|
| 664 |
|
---|
| 665 | textout << text_t2ascii << disp << "_query:queryfooter_";
|
---|
| 666 | }
|
---|
| 667 |
|
---|
| 668 |
|
---|
| 669 | ///////////////////////////////////////////////////////////////////////////////////////////////
|
---|
| 670 | // browse_action writes out the browse pages (i.e. the top level hierarchy pages)
|
---|
| 671 | void libinterface::browse_action (cgiargsclass &args, ostream &textout, ostream &logout)
|
---|
| 672 | {
|
---|
| 673 | text_t browse_bar, locator, output;
|
---|
| 674 | gdbm_info info;
|
---|
| 675 |
|
---|
| 676 | prepare_page(args, logout);
|
---|
| 677 |
|
---|
| 678 | // get browse bar unless page has been detached
|
---|
| 679 | if (args.getintarg("x") == 0) {
|
---|
| 680 | browse->get_browse_bar(args["d"], browse_bar);
|
---|
| 681 | }
|
---|
| 682 |
|
---|
| 683 | // get top locator
|
---|
| 684 | browse->get_top_locator(args, gdbm, 0, locator);
|
---|
| 685 |
|
---|
| 686 | // expand and output page
|
---|
| 687 | // Note: we need to expand these out using package 'browse'
|
---|
| 688 | // so we can't use the tricky '<<' syntax
|
---|
| 689 | disp.expandstring("browse", "_header_", output);
|
---|
| 690 | textout << text_t2ascii << output;
|
---|
| 691 | disp.expandstring("browse", browse_bar, output);
|
---|
| 692 | textout << text_t2ascii << output;
|
---|
| 693 | disp.expandstring("browse", locator, output);
|
---|
| 694 | textout << text_t2ascii << output;
|
---|
| 695 | disp.expandstring("browse", "_footer_", output);
|
---|
| 696 | textout << text_t2ascii << output;
|
---|
| 697 | }
|
---|
| 698 |
|
---|
| 699 |
|
---|
| 700 |
|
---|
| 701 | /////////////////////////////////////////////////////////////////////////////////////////
|
---|
| 702 | // document_action is called to retrieve and display collection documents
|
---|
| 703 | // It calls the mgsearch function docTargetDocument() to retrieve
|
---|
| 704 | // a document.
|
---|
| 705 |
|
---|
| 706 | void libinterface::document_action (cgiargsclass &args, ostream &textout, ostream &logout) {
|
---|
| 707 |
|
---|
| 708 | text_t locator, content, links, output;
|
---|
| 709 | gdbm_info info;
|
---|
| 710 | queryparamclass queryparams;
|
---|
| 711 | queryresultsclass queryresults;
|
---|
| 712 | int oversize = 0;
|
---|
| 713 |
|
---|
| 714 | // have to redo the query to get queryterms for highlight text
|
---|
| 715 | do_query(args, queryparams, queryresults, logout);
|
---|
| 716 |
|
---|
| 717 | prepare_page(args, logout);
|
---|
| 718 |
|
---|
| 719 | if (args["g"][1] == '0') {
|
---|
| 720 | // get docnum from gdbm
|
---|
| 721 | text_t docref;
|
---|
| 722 | if (args["d"][0] != 'B') get_book(args["d"], docref);
|
---|
| 723 | else docref = args["d"];
|
---|
| 724 | if (gdbm.getinfo(docref, queryparams.collection, info) != 0) {
|
---|
| 725 | logout << text_t2ascii << "info_db wasn't opened - " << docref << "\n";
|
---|
| 726 | return;
|
---|
| 727 | }
|
---|
| 728 |
|
---|
| 729 | // get document text if there is any
|
---|
| 730 | if (info.c.empty()) {
|
---|
| 731 | search.docTargetDocument(default_index, queryparams.collection,
|
---|
| 732 | info.d, content);
|
---|
| 733 | if (info.t != "<i>(introductory text)</i>")
|
---|
| 734 | content = "<h3>" + info.t + "</h3>\n" + content;
|
---|
| 735 | }
|
---|
| 736 | }
|
---|
| 737 |
|
---|
| 738 | if (args["g"][1] == '1') {
|
---|
| 739 | // want to get expanded out text
|
---|
| 740 | vector<text_t> contents_arr;
|
---|
| 741 | text_t booksection;
|
---|
| 742 | int levelcount;
|
---|
| 743 |
|
---|
| 744 | get_book (args["d"], booksection);
|
---|
| 745 | levelcount = count_dots(booksection);
|
---|
| 746 |
|
---|
| 747 | browse->get_contents_arr(args, gdbm, contents_arr);
|
---|
| 748 |
|
---|
| 749 |
|
---|
| 750 | // get text for each section of book
|
---|
| 751 | vector<text_t>::const_iterator thiscontent = contents_arr.begin();
|
---|
| 752 | vector<text_t>::const_iterator end = contents_arr.end();
|
---|
| 753 |
|
---|
| 754 | int first = 1;
|
---|
| 755 | int count = 1;
|
---|
| 756 | while (thiscontent != end) {
|
---|
| 757 | text_t text;
|
---|
| 758 |
|
---|
| 759 | // get docnum from gdbm
|
---|
| 760 | if (gdbm.getinfo(*thiscontent, queryparams.collection, info) != 0) {
|
---|
| 761 | logout << text_t2ascii << "info_db wasn't opened - " << args["d"] << "\n";
|
---|
| 762 | return;
|
---|
| 763 | }
|
---|
| 764 |
|
---|
| 765 | // if section has text get it, otherwise output section title
|
---|
| 766 | if (info.c.empty()) {
|
---|
| 767 |
|
---|
| 768 | // output <a name= > tags for all text sections currently displayed in toc (all text sections
|
---|
| 769 | // if contents are expanded
|
---|
| 770 | if (count_dots(*thiscontent) == levelcount || args["g"][0] == '1') {
|
---|
| 771 | content += "<a name=\"";
|
---|
| 772 | content += count;
|
---|
| 773 | content += "\"></a>\n";
|
---|
| 774 | count ++;
|
---|
| 775 | }
|
---|
| 776 |
|
---|
| 777 | search.docTargetDocument(default_index, queryparams.collection,
|
---|
| 778 | info.d, text);
|
---|
| 779 | if (info.t != "<i>(introductory text)</i>")
|
---|
| 780 | content += "<h3>" + info.t + "</h3>\n";
|
---|
| 781 | // content += text + "<hr><br>\n";
|
---|
| 782 | content += text + "<p>\n"; // no longer want <hr> between sections
|
---|
| 783 | } else {
|
---|
| 784 | content += "<h3>" + info.t + "</h3>\n";
|
---|
| 785 | }
|
---|
| 786 |
|
---|
| 787 | if (args["n"] == 1) {
|
---|
| 788 | if (first) {
|
---|
| 789 | browse->get_top_locator(args, gdbm, 0, locator);
|
---|
| 790 | disp.expandstring("text", "_header_", output);
|
---|
| 791 | textout << text_t2ascii << output;
|
---|
| 792 | disp.expandstring("text", locator, output);
|
---|
| 793 | textout << text_t2ascii << output;
|
---|
| 794 | }
|
---|
| 795 |
|
---|
| 796 | disp.expandstring("text", content, output);
|
---|
| 797 | if (!queryparams.querystring.empty())
|
---|
| 798 | highlighttext(queryresults.termvariants, textout, logout, output);
|
---|
| 799 | else
|
---|
| 800 | textout << text_t2ascii << output;
|
---|
| 801 | first = 0;
|
---|
| 802 | content.clear();
|
---|
| 803 | }
|
---|
| 804 |
|
---|
| 805 | thiscontent ++;
|
---|
| 806 | if (content.size() > 200000 && args["n"] != 1) {
|
---|
| 807 | content.clear();
|
---|
| 808 | oversize = 1;
|
---|
| 809 | args["g"][1] = '0';
|
---|
| 810 | break;
|
---|
| 811 | }
|
---|
| 812 | }
|
---|
| 813 |
|
---|
| 814 | if (args["g"][1] == '0') {
|
---|
| 815 | // get docnum from gdbm
|
---|
| 816 | text_t docref;
|
---|
| 817 | if (args["d"][0] != 'B') get_book(args["d"], docref);
|
---|
| 818 | else docref = args["d"];
|
---|
| 819 | if (gdbm.getinfo(docref, queryparams.collection, info) != 0) {
|
---|
| 820 | logout << text_t2ascii << "info_db wasn't opened - " << docref << "\n";
|
---|
| 821 | return;
|
---|
| 822 | }
|
---|
| 823 |
|
---|
| 824 | // get document text if there is any
|
---|
| 825 | if (info.c.empty()) {
|
---|
| 826 | search.docTargetDocument(default_index, queryparams.collection,
|
---|
| 827 | info.d, content);
|
---|
| 828 | if (info.t != "<i>(introductory text)</i>")
|
---|
| 829 | content = "<h3>" + info.t + "</h3>\n" + content;
|
---|
| 830 | }
|
---|
| 831 | }
|
---|
| 832 | }
|
---|
| 833 |
|
---|
| 834 | if (args["n"] != 1) {
|
---|
| 835 | // get top locator
|
---|
| 836 | browse->get_top_locator(args, gdbm, oversize, locator);
|
---|
| 837 |
|
---|
| 838 | // expand and output page
|
---|
| 839 | // Note: we need to expand these out using package 'text'
|
---|
| 840 | // so we can't use the tricky '<<' syntax
|
---|
| 841 | disp.expandstring("text", "_header_", output);
|
---|
| 842 | textout << text_t2ascii << output;
|
---|
| 843 |
|
---|
| 844 | disp.expandstring("text", locator, output);
|
---|
| 845 | textout << text_t2ascii << output;
|
---|
| 846 |
|
---|
| 847 | disp.expandstring("text", content, output);
|
---|
| 848 | if (!queryparams.querystring.empty())
|
---|
| 849 | highlighttext(queryresults.termvariants, textout, logout, output);
|
---|
| 850 | else
|
---|
| 851 | textout << text_t2ascii << output;
|
---|
| 852 | }
|
---|
| 853 |
|
---|
| 854 | // get links to next and previous sections unless in expand text mode
|
---|
| 855 | if (args["g"][1] == '0') {
|
---|
| 856 | browse->get_links(args, gdbm, links);
|
---|
| 857 | disp.expandstring("text", links, output);
|
---|
| 858 | textout << text_t2ascii << output;
|
---|
| 859 | }
|
---|
| 860 |
|
---|
| 861 | disp.expandstring("text", "_footer_", output);
|
---|
| 862 | textout << text_t2ascii << output;
|
---|
| 863 | }
|
---|
| 864 |
|
---|
| 865 |
|
---|
| 866 | /////////////////////////////////////////////////////////////////////////////////////////
|
---|
| 867 | // page is called when a standard html page is to be displayed
|
---|
| 868 | void libinterface::page_action (cgiargsclass &args, ostream &textout, ostream &logout)
|
---|
| 869 | {
|
---|
| 870 |
|
---|
| 871 | text_t &arg_p = args["p"];
|
---|
| 872 |
|
---|
| 873 | prepare_page(args, logout);
|
---|
| 874 |
|
---|
| 875 | if (arg_p == "preferences")
|
---|
| 876 | define_pref_macros(args, logout);
|
---|
| 877 |
|
---|
| 878 | textout << text_t2ascii << disp << ("_" + arg_p + ":header_\n")
|
---|
| 879 | << ("_" + arg_p + ":imagestandardbar_\n") << ("_" + arg_p + ":content_\n")
|
---|
| 880 | << ("_" + arg_p + ":footer_\n");
|
---|
| 881 | }
|
---|
| 882 |
|
---|
| 883 | // highlighttext highlights query terms in text string and outputs the resulting text string
|
---|
| 884 | void libinterface::highlighttext(vector<text_t> &termvars, ostream &textout,
|
---|
| 885 | ostream &logout, text_t &text)
|
---|
| 886 | {
|
---|
| 887 | map<text_t, int, lttext_t> terms;
|
---|
| 888 | map<text_t, int, lttext_t>::const_iterator it;
|
---|
| 889 | for (unsigned int i = 0; i < termvars.size(); i++) {
|
---|
| 890 | terms[termvars[i]] = 1;
|
---|
| 891 | }
|
---|
| 892 |
|
---|
| 893 | text_t::iterator here = text.begin();
|
---|
| 894 | text_t::iterator end = text.end();
|
---|
| 895 | text_t word, buffer;
|
---|
| 896 | while (here != end) {
|
---|
| 897 | if (((*here >= 65) && (*here <= 90)) ||
|
---|
| 898 | ((*here >= 97) && (*here <= 122)) ||
|
---|
| 899 | ((*here >= '0') && (*here <= '9')) ||
|
---|
| 900 | ((*here >= 192) && (*here <= 214)) ||
|
---|
| 901 | ((*here >= 216) && (*here <= 246)) ||
|
---|
| 902 | ((*here >= 248) && (*here <= 255))) {
|
---|
| 903 | // not word boundary
|
---|
| 904 | word.push_back(*here);
|
---|
| 905 | here++;
|
---|
| 906 |
|
---|
| 907 | } else {
|
---|
| 908 | // found word boundary
|
---|
| 909 | // add last word if there was one
|
---|
| 910 | if (!word.empty()) {
|
---|
| 911 | it = terms.find(word);
|
---|
| 912 | if (it != terms.end()) {
|
---|
| 913 | word = "<b><u>" + word + "</u></b>";
|
---|
| 914 | }
|
---|
| 915 | buffer += word;
|
---|
| 916 | word.clear();
|
---|
| 917 | }
|
---|
| 918 |
|
---|
| 919 | if (*here == '<') {
|
---|
| 920 | // skip over rest of html tag
|
---|
| 921 | while ((here != end) && (*here != '>')) {
|
---|
| 922 | buffer.push_back(*here);
|
---|
| 923 | here++;
|
---|
| 924 | }
|
---|
| 925 | }
|
---|
| 926 |
|
---|
| 927 | buffer.push_back(*here);
|
---|
| 928 | here++;
|
---|
| 929 |
|
---|
| 930 | if (buffer.size() > 1024) {
|
---|
| 931 | textout << text_t2ascii << buffer;
|
---|
| 932 | buffer.clear();
|
---|
| 933 | }
|
---|
| 934 | }
|
---|
| 935 | }
|
---|
| 936 | textout << text_t2ascii << buffer;
|
---|
| 937 | }
|
---|
| 938 |
|
---|
| 939 | void libinterface::define_pref_macros (cgiargsclass &args, ostream &logout)
|
---|
| 940 | {
|
---|
| 941 | // the caseoption macro
|
---|
| 942 | text_t caseoption;
|
---|
| 943 | int arg_k = args.getintarg("k");
|
---|
| 944 |
|
---|
| 945 | caseoption += "\n<input type=radio name=k value=1";
|
---|
| 946 | if (arg_k) caseoption += " checked";
|
---|
| 947 | caseoption += "> ignore case differences<br>\n";
|
---|
| 948 | caseoption += "<input type=radio name=k value=0";
|
---|
| 949 | if (!arg_k) caseoption += " checked";
|
---|
| 950 | caseoption += "> upper/lower case must match\n";
|
---|
| 951 |
|
---|
| 952 | disp.setmacro ("caseoption", "preferences", caseoption);
|
---|
| 953 |
|
---|
| 954 | // the stemoption macro
|
---|
| 955 | text_t stemoption;
|
---|
| 956 | int arg_s = args.getintarg("s");
|
---|
| 957 |
|
---|
| 958 | stemoption += "\n<input type=radio name=s value=1";
|
---|
| 959 | if (arg_s) stemoption += " checked";
|
---|
| 960 | stemoption += "> ignore word endings<br>\n";
|
---|
| 961 | stemoption += "<input type=radio name=s value=0";
|
---|
| 962 | if (!arg_s) stemoption += " checked";
|
---|
| 963 | stemoption += "> whole word must match\n";
|
---|
| 964 |
|
---|
| 965 | disp.setmacro ("stemoption", "preferences", stemoption);
|
---|
| 966 |
|
---|
| 967 |
|
---|
| 968 | // the maxdocoption
|
---|
| 969 | text_t maxdocoption;
|
---|
| 970 | int arg_m = args.getintarg("m");
|
---|
| 971 |
|
---|
| 972 | maxdocoption += "\n<select name=m>\n";
|
---|
| 973 | maxdocoption += " <option value=\"50\"";
|
---|
| 974 | if (arg_m < 100) maxdocoption += " selected";
|
---|
| 975 | maxdocoption += ">50\n";
|
---|
| 976 | maxdocoption += " <option value=\"100\"";
|
---|
| 977 | if (arg_m >= 100 && arg_m < 200) maxdocoption += " selected";
|
---|
| 978 | maxdocoption += ">100\n";
|
---|
| 979 | maxdocoption += " <option value=\"200\"";
|
---|
| 980 | if (arg_m >= 200 && arg_m < 500) maxdocoption += " selected";
|
---|
| 981 | maxdocoption += ">200\n";
|
---|
| 982 | maxdocoption += " <option value=\"500\"";
|
---|
| 983 | if (arg_m >= 500) maxdocoption += " selected";
|
---|
| 984 | maxdocoption += ">500\n";
|
---|
| 985 | maxdocoption += "</select>\n";
|
---|
| 986 |
|
---|
| 987 | disp.setmacro ("maxdocoption", "preferences", maxdocoption);
|
---|
| 988 |
|
---|
| 989 | // the hitsperpageoption
|
---|
| 990 | text_t hitsoption;
|
---|
| 991 | int arg_o = args.getintarg("o");
|
---|
| 992 |
|
---|
| 993 | hitsoption += "\n<select name=o>\n";
|
---|
| 994 | hitsoption += " <option value=\"10\"";
|
---|
| 995 | if (arg_o < 20) hitsoption += " selected";
|
---|
| 996 | hitsoption += ">10\n";
|
---|
| 997 | hitsoption += " <option value=\"20\"";
|
---|
| 998 | if (arg_o >= 20 && arg_o < 50) hitsoption += " selected";
|
---|
| 999 | hitsoption += ">20\n";
|
---|
| 1000 | hitsoption += " <option value=\"50\"";
|
---|
| 1001 | if (arg_o >= 50 && arg_o < 100) hitsoption += " selected";
|
---|
| 1002 | hitsoption += ">50\n";
|
---|
| 1003 | hitsoption += " <option value=\"100\"";
|
---|
| 1004 | if (arg_o >= 100 && arg_o < 500) hitsoption += " selected";
|
---|
| 1005 | hitsoption += ">100\n";
|
---|
| 1006 | hitsoption += " <option value=\"500\"";
|
---|
| 1007 | if (arg_o >= 500) hitsoption += " selected";
|
---|
| 1008 | hitsoption += ">all\n";
|
---|
| 1009 | hitsoption += " </select>\n";
|
---|
| 1010 |
|
---|
| 1011 | disp.setmacro ("hitsperpageoption", "preferences", hitsoption);
|
---|
| 1012 | }
|
---|