Added a PagedArticle class. It goes through a given folder, evaluates all first level subfolders, and creates an article from each directory, and page into those articles from each file with pagination.

This commit is contained in:
Relintai 2020-12-28 23:17:30 +01:00
parent 3ff8c5a20b
commit c0c76f1481
4 changed files with 295 additions and 0 deletions

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#!/usr/bin/env python
Import("env_mod")
Import("env")
env_mod.core_sources = []
env_mod.add_source_files(env_mod.core_sources, "*.cpp")
# Build it all as a library
lib = env_mod.add_library("list_page", env_mod.core_sources)
env.Prepend(LIBS=[lib])

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import os
import platform
import sys
def is_active():
return True
def get_name():
return "list_page"
def can_build():
return True
def get_opts():
return []
def get_flags():
return []
def configure(env):
pass

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#include "paged_article.h"
#include "core/query_builder.h"
#include "core/query_result.h"
#include "core/table_builder.h"
#include "core/utils.h"
#include <tinydir/tinydir.h>
#include <iostream>
#include "core/application.h"
void PagedArticle::index(Request *request) {
const std::string r = request->get_current_path_segment();
Article *s = pages[r];
if (s == nullptr) {
Application::get_instance()->send_error(404, request);
return;
}
request->push_path();
const std::string rp = request->get_current_path_segment();
if (rp == "") {
//summary page
request->body += s->summary_page;
request->compile_and_send_body();
request->pop_path();
return;
}
const std::string *page = s->pages[rp];
if (page == nullptr) {
//bad url
Application::get_instance()->send_error(404, request);
return;
}
request->body += (*page);
request->compile_and_send_body();
request->pop_path();
}
void PagedArticle::load() {
if (folder == "") {
printf("Error: PagedArticle::load called, but a folder is not set!");
return;
}
if (base_path.size() > 0 && base_path[base_path.size() - 1] == '/') {
base_path.pop_back();
}
tinydir_dir dir;
if (tinydir_open(&dir, folder.c_str()) == -1) {
printf("Error opening PagedArticle::folder!\n");
return;
}
while (dir.has_next) {
tinydir_file file;
if (tinydir_readfile(&dir, &file) == -1) {
tinydir_next(&dir);
continue;
}
if (file.is_dir) {
if (file.name[0] == '.' || (file.name[0] == '.' && file.name[1] == '.')) {
tinydir_next(&dir);
continue;
}
std::string np = file.path;
std::string fn = file.name;
Article *a = load_folder(np, base_path + "/" + fn);
if (a) {
std::string p = file.name;
a->url = p;
pages[p] = a;
}
}
tinydir_next(&dir);
}
tinydir_close(&dir);
generate_summaries();
}
Article *PagedArticle::load_folder(const std::string &folder, const std::string &path) {
printf("PagedArticle: loading: %s\n", folder.c_str());
std::vector<std::string> files;
tinydir_dir dir;
if (tinydir_open(&dir, folder.c_str()) == -1) {
printf("PagedArticle::load_folder: Error opening folder %s!\n", folder.c_str());
return nullptr;
}
while (dir.has_next) {
tinydir_file file;
if (tinydir_readfile(&dir, &file) == -1) {
tinydir_next(&dir);
continue;
}
if (!file.is_dir) {
std::string np = file.name;
files.push_back(np);
}
tinydir_next(&dir);
}
tinydir_close(&dir);
if (files.size() == 0) {
return nullptr;
}
std::sort(files.begin(), files.end());
Article *article = new Article();
for (uint32_t i = 0; i < files.size(); ++i) {
std::string file_path = folder;
if (file_path.size() > 0 && file_path[file_path.size() - 1] != '/')
file_path += "/";
file_path += files[i].c_str();
FILE *f = fopen(file_path.c_str(), "r");
if (!f) {
printf("PagedArticle::load_folder: Error opening file! %s\n", file_path.c_str());
continue;
}
fseek(f, 0, SEEK_END);
long fsize = ftell(f);
fseek(f, 0, SEEK_SET); /* same as rewind(f); */
std::string fd;
fd.resize(fsize);
fread(&fd[0], 1, fsize, f);
fclose(f);
Utils::markdown_to_html(&fd);
std::string pagination;
pagination = Utils::get_pagination_links(path, files, i);
std::string *finals = new std::string();
(*finals) += pagination;
(*finals) += fd;
(*finals) += pagination;
article->pages[files[i]] = finals;
if (i == 0) {
article->summary_page = (*finals);
}
}
return article;
}
void PagedArticle::generate_summaries() {
for (std::map<std::string, Article *>::iterator it = pages.begin(); it != pages.end(); ++it) {
generate_summary((*it).second);
}
}
void PagedArticle::generate_summary(Article *article) {
if (article->summary_page != "") {
return;
}
for (std::map<std::string, std::string *>::iterator it = article->pages.begin(); it != article->pages.end(); ++it) {
std::string *s = (*it).second;
if (s != nullptr) {
article->summary_page = (*s);
}
}
}
PagedArticle::PagedArticle() :
Object() {
}
PagedArticle::~PagedArticle() {
pages.clear();
}

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#ifndef PAGED_ARTICLE_H
#define PAGED_ARTICLE_H
#include <map>
#include <string>
#include <vector>
#include "core/object.h"
#include "core/request.h"
struct Article {
std::string url;
std::string summary_page;
std::map<std::string, std::string *> pages;
Article() {}
~Article() {
for (std::map<std::string, std::string *>::iterator it = pages.begin(); it != pages.end(); ++it) {
delete ((*it).second);
}
pages.clear();
}
};
class PagedArticle : public Object {
RCPP_OBJECT(PagedArticle, Object);
public:
void index(Request *request);
void load();
Article *load_folder(const std::string &folder, const std::string &path);
void generate_summaries();
void generate_summary(Article *article);
PagedArticle();
~PagedArticle();
std::map<std::string, Article *> pages;
std::string folder;
std::string base_path;
};
#endif