examples/IR/ir_web.usp

<!--#declaration

#include "ir_session.h"
#include <ulib/debug/crono.h>

#define IR_SESSION (*(IRDataSession*)UHTTP::data_session)

static IR* ir;
static Query* query;
static UCrono* crono;
static UString* footer;

static void usp_init_ir_web()
{
   U_TRACE(5, "::usp_init_ir_web()")

   U_INTERNAL_ASSERT_EQUALS(ir, U_NULLPTR)
   U_INTERNAL_ASSERT_EQUALS(query, U_NULLPTR)
   U_INTERNAL_ASSERT_EQUALS(crono, U_NULLPTR)
   U_INTERNAL_ASSERT_EQUALS(footer, U_NULLPTR)

   U_NEW(IR, ir, IR);
   U_NEW(Query, query, Query);
   U_NEW_WITHOUT_CHECK_MEMORY(UCrono, crono, UCrono);
   U_NEW_STRING(footer, UString(200U));

   ir->loadFileConfig();

   if (ir->openCDB(false) == false)
      {
      U_ERROR("usp_init() of servlet ir_web failed");
      }

   footer->snprintf(U_CONSTANT_TO_PARAM("ver. %.*s, with %u documents and %u words."), U_CONSTANT_TO_TRACE(ULIB_VERSION), cdb_names->size(), cdb_words->size());

   U_NEW(IRDataSession, UHTTP::data_session, IRDataSession);

   UHTTP::initSession();
}

static void usp_end_ir_web()
{
   U_TRACE(5, "::usp_end_ir_web()")

   U_INTERNAL_ASSERT_POINTER(ir)
   U_INTERNAL_ASSERT_POINTER(query)
   U_INTERNAL_ASSERT_POINTER(crono)
   U_INTERNAL_ASSERT_POINTER(footer)

   U_DELETE(ir)
   U_DELETE(query)
   U_DELETE(crono)
   U_DELETE(footer)
}
-->
<!--#session
-->
<!--#code
const char* ref     = "?ext=help";
uint32_t num_args   = UHTTP::processForm() / 2;
bool form_with_help = false;

if (UHTTP::isGET())
   {
   if (num_args == 1)
      {
      UString ext_val = USP_FORM_VALUE_FROM_NAME("ext");

      if (ext_val.equal(U_CONSTANT_TO_PARAM("help")))
         {
         ref            = "ir_web";
         form_with_help = true;
         }
      else
         {
         UHTTP::num_item_tot = IR_SESSION.size();
         UHTTP::num_page_cur = USP_FORM_VALUE(0).strtol();
         }
      }
   }
else if (UHTTP::isPOST())
   {
   IR_SESSION.query = USP_FORM_VALUE(0);

   if (num_args != 2 ||
       IR_SESSION.query.empty())
      {
      UHTTP::setBadRequest();

      return;
      }

   IR_SESSION.for_page = UHTTP::num_item_for_page = USP_FORM_VALUE(1).strtol();

   query->clear();

   crono->start();

   query->run(U_STRING_TO_PARAM(IR_SESSION.query), &IR_SESSION.vec);

   crono->stop();

   if ((UHTTP::num_item_tot = WeightWord::size()))
      {
      UHTTP::num_page_start = 1;
      UHTTP::num_page_end   = UHTTP::num_item_for_page;

      WeightWord::sortObjects();
      }

   WeightWord::vec     = U_NULLPTR;
   IR_SESSION.timerun  = UStringExt::numberToString(crono->getTimeElapsedInSecond());
   UHTTP::num_page_cur = 1;
   }
else
   {
   UHTTP::setBadMethod();

   return;
   }
-->
<html>
<head>
  <title>ULib search engine: a full-text search system for communities</title>
  <link title="Services" rel="stylesheet" href="/css/pagination.min.css" type="text/css">
</head>
<body>
  <div id="estform" class="estform">
    <form action="ir_web" method="post" id="form_self" name="form_self">

      <div class="form_navi">
        <a href="<!--#puts ref -->" class="navilink">help</a>
      </div>

      <div class="form_basic">
        <input type="text" name="phrase" value="" size="80" id="phrase" class="text" tabindex="1" accesskey="0">
        <input type="submit" value="Search" id="search" class="submit" tabindex="2" accesskey="1">
      </div>

      <div class="form_extension">
        <select name="perpage" id="perpage" tabindex="3">
          <option value="10" selected="selected">10</option>
          <option value="20">20</option> 
          <option value="30">30</option>
          <option value="50">50</option>
          <option value="60">60</option>
          <option value="70">70</option>
          <option value="80">80</option>
          <option value="90">90</option>
          <option value="100">100</option>
        </select> per page
      </div>
    </form>
  </div>

<!--#code
if (form_with_help) {
-->

   <div class="help">
    <h1 class="title">Help</h1>

    <h2>What is This?</h2>

    <p>This is a full-text search system. You can search for documents including some specified words.</p>

    <h2>How to Use</h2>

    <p>Input search phrase into the field at the top of the page. For example, if you search for documents including "computer", input the
    following.</p>
    <pre>computer</pre>

    <p>If you search for documents including both of "network" and "socket", input the following.</p>
    <pre>network socket</pre>

    <p>It is the same as the following.</p>
    <pre>network AND socket</pre>

    <p>If you search for documents including "network" followed by "socket", input the following.</p>
    <pre>"network socket"</pre>

    <p>If you search for documents including one or both of "network" and "socket", input the following.</p>
    <pre>network OR socket</pre>

    <p>If you search for documents including "network" but without "socket", input the following.</p>
    <pre>network AND NOT socket</pre>

    <p>For more complex query, you can use "<code>(</code>". Note that the priority of "<code>(</code>" is higher than that of "<code>AND</code>",
    "<code>OR</code>" and "<code>NOT</code>". So, the following is to search for documents including one of "F1", "F-1", "Formula One", and including
    one of "champion" and "victory".</p>
    <pre>(F1 OR F-1 OR "Formula One") AND (champion OR victory)</pre>

    <h2>You can use DOS wildcard characters</h2>

    <p>If you search for documents including some words beginning with "inter", input the following.</p>
    <pre>inter*</pre>

    <p>If you search for documents including some words ending with "sphere", input the following.</p>
    <pre>*sphere</pre>

    <p>If you search for documents matching some words matching "?n*able" (unable, unavoidable, inevitable, ...), input the following.</p>
    <pre>?n*able</pre>

    <h2>Other Faculties</h2>

    <p>"<code>[...] per page</code>" specifies the number of shown documents per page. If documents over one page correspond, you can move to another
    page via anchors of "<code>PREV</code>" and "<code>NEXT</code>" at the bottom of the page.</p>

    <h2>Information</h2>

    <p>See <a href="https://www.unirel.com/">the project site</a> for more detail.</p>
   </div>

<!--#code
} else {
   if (num_args == 0) {
-->

   <div class="logo">
      <h1 class="title">ULib search engine</h1>
      <div class="caption">a full-text search system for communities</div>
   </div>

<!--#code
   } else {

      UString link_paginazione = UHTTP::getLinkPagination();

      USP_PRINTF("<div id=\"estresult\" class=\"estresult\">\n"
                 "  <div class=\"resinfo\">\n"
                 "  Results of <strong>%u</strong> - <strong>%u</strong> of about <strong>%u</strong> for <strong>%v</strong> (%v sec.)\n"
                 "  </div>\n",
                 UHTTP::num_page_start, UHTTP::num_page_end, UHTTP::num_item_tot, IR_SESSION.query.rep, IR_SESSION.timerun.rep);

      if (UHTTP::num_item_tot == 0) {
-->
         <p class="note">Your search did not match any documents.</p>
<!--#code
         } else {

         UString doc, snippet_doc(U_CAPACITY), basename, filename, pathname1(U_CAPACITY), pathname2(U_CAPACITY);

         for (uint32_t i = UHTTP::num_page_start-1; i < UHTTP::num_page_end; ++i)
            {
            filename = IR_SESSION.vec[i]->filename;
            basename = UStringExt::basename(filename);

            pathname1.snprintf(U_CONSTANT_TO_PARAM(  "/doc/%v"), filename.rep);
            pathname2.snprintf(U_CONSTANT_TO_PARAM("%w/doc/%v"), filename.rep);

            doc = UFile::contentOf(pathname2);

            UXMLEscape::encode(doc, snippet_doc);

            USP_PRINTF("<dl class=\"doc\"\n"
                       "  <dt><a href=\"%v\" class=\"doc_title\">%v</a></dt>\n"
                       "  <dd class=\"doc_text\">%v <code class=\"delim\">...</code></dd>\n"
                       "  <dd class=\"doc_navi\"><span class=\"doc_link\">file://%v</span></dd>\n"
                       "</dl>\n",
                       pathname1.rep, basename.rep, snippet_doc.rep, pathname2.rep);
            }
         }

      USP_PRINTF("<div class=\"paging\">%v</div></div>\n", link_paginazione.rep);
      }
}
-->

  <div id="estinfo" class="estinfo">
    Powered by <a href="https://www.unirel.com/">ULib search engine</a> <!--#puts *footer -->
  </div>
</body>
</html>