biawebdoclist.hpp

   1 #ifndef __BIAWEBDOCITEMLIST__
   2 #define __BIAWEBDOCITEMLIST__
   3 #include <ctime>
   4 #include <string>
   5 #include <fstream>
   6 #include <iostream>
   7 #include <iomanip>
   8 #include <list>
   9 #include <fmt/format.h>
  10 #include <fmt/chrono.h>
  11 #include "biawebstrings.hpp"
  12 #include "biawebdocument.hpp"
  13
  14 // to implement a list of items (documents) with creation/modified date/time display
  15 namespace biaweb {
  16     // to implement a single document item
  17     class DocListItem {
  18       protected:
  19       // Just the required fields to build the item
  20         std::string title;
  21         std::string url;
  22         std::time_t ctime;
  23         std::time_t mtime;
  24       public:
  25         DocListItem (std::string title, std::string url,
  26                     std::time_t ctime, std::time_t mtime ) {
  27             this->title = escape_html (title);
  28             this->url = url;
  29             this->ctime = ctime;
  30             this->mtime = mtime;
  31         }
  32
  33         std::time_t get_mtime() {
  34             return this->mtime;
  35         }
  36         void set_mtime(std::time_t mtime) {
  37             this->mtime = mtime;
  38         }
  39         std::time_t get_ctime() {
  40             return this->ctime;
  41         }
  42         void set_ctime(std::time_t ctime) {
  43             this->ctime = ctime;
  44         }
  45
  46         std::string get_url() {
  47                   return this->url;
  48         }
  49
  50         void set_url(std::string url) {
  51           this->url = url;
  52         }
  53
  54         std::string get_title() {
  55             return this->title;
  56         }
  57         void set_title(std::string title) {
  58             this->title = escape_html (title);
  59         }
  60
  61         // output to HTML vide the template
  62         std::string to_html (std::string templatedir);
  63     };
  64
  65     // output to HTML vide the template
  66     std::string DocListItem::to_html (std::string templatedir) {
  67         std::ifstream templ (templatedir + "/doclistitem.tpl.html");
  68         std::string templstr ((std::istreambuf_iterator<char> (templ)),
  69                             (std::istreambuf_iterator<char> ()) );
  70         templ.close ();
  71
  72         std::tm c, m;
  73         c = *std::localtime (&this->ctime);
  74         m = *std::localtime (&this->mtime);
  75
  76         std::string outputhtml = fmt::format (templstr, fmt::arg("url", this->url),
  77                                fmt::arg("doctitle", this->title),
  78                                fmt::arg("cdate", c),
  79                                fmt::arg("mdate", m));
  80
  81         return outputhtml;
  82     }
  83
  84     // to implement a document list (or table)
  85     class DocList {
  86       protected:
  87         std::string title;
  88         std::list<DocListItem> items;
  89       public:
  90         void set_title (std::string title) {
  91             this->title = escape_html (title);
  92         }
  93         // add a document item
  94         void add_document_item (DocListItem docitem) {
  95             this->items.insert (this->items.cend(), docitem);
  96         }
  97         // render to HTML from a template
  98         std::string to_html (std::string templatedir);
  99     };
 100
 101     std::string DocList::to_html (std::string templatedir) {
 102         std::ifstream templ (templatedir + "/doclist.tpl.html");
 103         std::string templstr ( (std::istreambuf_iterator<char> (templ) ),
 104                                 (std::istreambuf_iterator<char> ()));
 105
 106         templ.close ();
 107
 108         std::string outputhtml = "";
 109         // if the number of elements is non zero
 110         if (this->items.size () != 0) {
 111             std::string docitems = "";
 112             for (DocListItem item : this->items)
 113                 docitems += item.to_html (templatedir);
 114
 115             outputhtml = fmt::format (templstr,
 116                                             fmt::arg ("title", this->title),
 117                                             fmt::arg ("docitems", docitems));
 118         }
 119         return outputhtml;
 120     }
 121 }
 122
 123 #endif