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::string outputhtml = fmt::format (templstr, fmt::arg("url", this->url),
  73                                fmt::arg("doctitle", this->title),
  74                                fmt::arg("cdate", *std::localtime (&this->ctime)),
  75                                fmt::arg("mdate", *std::localtime (&this->mtime)));
  76
  77         return outputhtml;
  78     }
  79
  80     // to implement a document list (or table)
  81     class DocList {
  82       protected:
  83         std::string title;
  84         std::list<DocListItem> items;
  85       public:
  86         void set_title (std::string title) {
  87             this->title = escape_html (title);
  88         }
  89         // add a document item
  90         void add_document_item (DocListItem docitem) {
  91             this->items.insert (this->items.cend(), docitem);
  92         }
  93         // render to HTML from a template
  94         std::string to_html (std::string templatedir);
  95     };
  96
  97     std::string DocList::to_html (std::string templatedir) {
  98         std::ifstream templ (templatedir + "/doclist.tpl.html");
  99         std::string templstr ( (std::istreambuf_iterator<char> (templ) ),
 100                                 (std::istreambuf_iterator<char> ()));
 101
 102         templ.close ();
 103
 104         std::string outputhtml = "";
 105         // if the number of elements is non zero
 106         if (this->items.size () != 0) {
 107             std::string docitems = "";
 108             for (DocListItem item : this->items)
 109                 docitems += item.to_html (templatedir);
 110
 111             outputhtml = fmt::format (templstr,
 112                                             fmt::arg ("title", this->title),
 113                                             fmt::arg ("docitems", docitems));
 114         }
 115         return outputhtml;
 116     }
 117 }
 118
 119 #endif