site_depotoire/create_homepage.lua

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#!/usr/bin/env lua
-- porteail.lua
--[[ Requirements ]]--
require 'lfs'
--[[ Variables ]]--
-- Mandatories files
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local configFile = './' .. 'configrc'
-- Default directories values
local currentpath = os.getenv('CURDIR') or '.'
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local default_dir_category = 'categ'
local default_dir_component = 'composants'
local default_dir_destination = 'porteail'
local default_dir_img_destination = 'image'
local default_dir_img_source = 'img'
local default_dir_css_source = 'style'
local default_dir_lang = 'lang'
-- Default files values
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local default_img_filename = 'generique.png'
local default_index_filename = 'index.html'
local default_template_index_filename = 'index.html'
local default_template_categ_filename = 'categories.html'
local default_template_element_filename = 'element.html'
local default_css_filename = 'black.css'
local default_css_menu_without = 'without_menu.css'
local default_css_menu_with = 'with_menu.css'
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-- Other defaults values
local version = os.getenv('VERSION') or '(Unknown version)'
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local default_categ_extension = 'txt'
local DIR_SEP = '/'
local default_css_name = 'Default'
local default_title = 'My portal'
local default_homepage_title = ' - Homepage'
local default_language = 'en'
--[[ Functions ]]--
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function readFile(path, mode)
result = ''
if not mode then
mode = 'r'
end
if mode ~= 'r' and mode ~= 'rb' then
print('Unknown read mode!')
os.exit(1)
end
attr = lfs.attributes(path)
if attr and attr.mode == 'file' then
f = assert(io.open(path, mode))
result = assert(f:read('*a'))
assert(f:close())
end
return result
end
function getConfig(file)
result = {}
f = assert(io.open(file, 'r'))
while true do
line = f.read(f)
if not line then break end
local key = line:match('([^#].-)[ ]+=')
local val = line:match('=[ ]+(.*)')
local comment = string.find(line, '^#+(.*)')
if comment then
-- do nothing with comment
elseif key then
result[key] = val
end
end
assert(f:close())
return result
end
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function replace(string, table)
return string:gsub("$(%b{})", function(string)
return table[string:sub(2,-2)]
end)
end
function listing (path, extension)
files = {}
if lfs.attributes(path) then
for file in lfs.dir(path) do
if file ~= "." and file ~= ".." then
local f = path..'/'..file
local attr = lfs.attributes (f)
filext = (string.match(file, "[^\\/]-%.?([^%.\\/]*)$"))
if attr.mode == 'file' and filext == extension then
table.insert(files, f)
end
end
end
else
files = nil
end
return files
end
function basename (string, suffix)
string = string or ''
local basename = string.gsub (string, '[^'.. DIR_SEP ..']*'.. DIR_SEP ..'', '')
if suffix then
basename = string.gsub (basename, suffix, '')
end
return basename
end
function processImage(image, source, img_destination, destination, default_img)
-- if no image given, use default one
if not image or image == nil or image == '' then
image = default_img
end
-- create image weblink
result = img_destination .. '/' .. basename(image)
-- check if this image exists
attr = lfs.attributes(destination .. '/' .. result)
if not attr then
img_path = source .. '/' .. image
f = assert(io.open(img_path, 'rb'))
img_src = assert(f:read('*a'))
assert(f:close())
img_dest = assert(io.open(destination .. '/' .. result, 'wb'))
assert(img_dest:write(img_src))
assert(img_dest:close())
end
return result
end
function process(filepath, template_categ, template_element, img_destination, destination, img_source, default_img)
-- parse given file
local elements = {}
local categ_title = ''
local categ_description = ''
local categ_count = 0
-- parse category file
for line in io.lines(filepath) do
local element = ''
-- check if this line is:
-- a comment ("# my comment"),
-- a category ("[[My category]]Its description")
-- or an element ("Title##Description##URL##Image")
is_comment = string.find(line, '^#+.*')
is_title = string.find(line, '%[%[(.*)%]%](.*)')
is_element = string.find(line, '(.*)##(.*)##(.*)##(.*)')
-- processing lines to fetch data
if is_comment then
-- do nothing because it's a comment
elseif is_title then
for t in string.gmatch(line, '%[%[(.*)%]%].*') do categ_title = categ_title .. t end
for d in string.gmatch(line, '%[%[.*%]%](.*)') do categ_description = categ_description .. d end
categ_count = categ_count + 1
elseif is_element then
title = ''
description = ''
url = ''
img = ''
for t in string.gmatch(line, '(.*)##.*##.*##.*') do title = title .. t end
for d in string.gmatch(line, '.*##.*##(.*)##.*') do description = description .. d end
for u in string.gmatch(line, '.*##(.*)##.*##.*') do url = url .. u end
for i in string.gmatch(line, '.*##.*##.*##(.*)') do img = img .. i end
img_description = " "
-- copy image and fetch result
img_url = processImage(img, img_source, img_destination, destination, default_img)
-- replace some chars in URL to avoid HTML5 problems
url = url:gsub('%&', '%&')
-- create element's result
element = replace(template_element, {ELEMENT_URL=url, ELEMENT_DESC=description, ELEMENT_TITLE=title, IMG_URL=img_url, IMG_DESC=img_description})
-- add it to elements table
table.insert(elements, element)
end
end
-- check if category is ok
error_msg = ' ' .. filepath .. ' not imported: '
if categ_count > 1 then
print (error_msg .. 'too many categories.')
return ''
elseif categ_count == 0 then
print (error_msg .. 'no category found.')
return ''
end
-- check elements
if table.getn(elements) < 1 then
print (error_msg .. 'no elements found.')
return ''
end
-- parse elements to add them to result
local text_elements = ''
for k, v in pairs(elements) do
text_elements = text_elements .. v
end
-- do substitutions on result
local result = replace(template_categ, {CATEG_TITLE=categ_title, CATEG_DESC=categ_description, ELEMENTS=text_elements})
return result
end
--[[ Principal ]]--
-- fetch user defined values
config = getConfig(configFile)
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-- create values for directories
categ = config['CATEGORIES'] or default_dir_category
component = config['COMPONENTS'] or default_dir_component
destination = config['DESTINATION'] or default_dir_destination
img_destination = config['IMAGE_DESTINATION'] or default_dir_img_destination
img_source = config['IMAGES'] or default_dir_img_source
css_source = config['CSS'] or default_dir_css_source
-- create values for files
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index_filename = config['INDEX'] or default_index_filename
main_template = config['TEMPLATE_INDEX'] or default_template_index_filename
template_categ_filename = config['TEMPLATE_CATEG'] or default_template_categ_filename
template_element_filename = config['TEMPLATE_ELEMENT'] or default_template_element_filename
default_img = config['DEFAULT_IMG'] or default_img_filename
css_filename = config['STYLE'] or default_css_filename
css_menu = default_css_menu_without
local menu = config['MENU'] or ''
if config['MENU'] then
css_menu = default_css_menu_with
end
local introduction = config['INTRO'] or ''
-- other default values
categ_extension = config['CATEGORIES_EXT'] or default_categ_extension
css_name = config['CSS_NAME'] or default_css_name
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-- get pages
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index = readFile(currentpath .. '/' .. component .. '/' .. index_filename, 'r')
template_categ = readFile(currentpath .. '/' .. component .. '/' .. template_categ_filename, 'r')
template_element = readFile(currentpath .. '/' .. component .. '/' .. template_element_filename, 'r')
-- open menu file if menu have been activated
local menu_content = ''
if menu ~= '' then
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menu_content = readFile(component .. '/' .. menu, 'r')
end
-- open introduction file if intro have been activated
local introduction_content = ''
if introduction ~= '' then
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introduction_content = readFile(component .. '/' .. introduction, 'r')
end
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-- Check if public and image directory exists
for i, dir in pairs({destination, destination .. '/' .. img_destination}) do
if lfs.attributes(dir) == nil then
assert(lfs.mkdir(dir))
end
end
-- Browse categ directory
local categories_files = listing (currentpath .. '/' .. categ, categ_extension)
-- sort table in order to show categories in the alphabetical order
table.sort(categories_files)
local content = ''
if categories_files then
for k,v in pairs(categories_files) do
-- read category content
attr = lfs.attributes(v)
if attr and attr.mode == 'file' then
content = content .. process(v, template_categ, template_element, img_destination, destination, img_source, default_img)
end
end
else
print ("-- No category file found!")
end
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-- Create index file in destination directory
index_result = assert(io.open(destination .. '/' .. main_template, 'wb'))
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-- create substitution table
substitutions = {
TITLE=config['HOMEPAGE'] or (config['TITLE'] and config['TITLE'] .. default_homepage_title) or (default_title .. default_homepage_title),
PORTEAIL_TITLE=config['TITLE'] or default_title,
CONTENT=content,
INTRODUCTION=introduction_content,
MENU=menu_content,
CSS_COLOR=css_filename,
CSS_NAME=css_name,
DEFAULT_CSS=css_menu,
VERSION=version,
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}
-- Get language configuration
language = config['LANG'] or default_language
languagerc = getConfig(default_dir_lang .. '/' .. language)
-- Add language translation to replacements table
for k, v in pairs(languagerc) do
substitutions[k] = v
end
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-- replace variables in result
homepage = replace(index, substitutions)
assert(index_result:write(homepage))
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-- close file
assert(index_result:close())
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-- Copy miscellaneous files to destination
to_be_copied = {
component .. '/' .. 'html5.js',
css_source .. '/' .. css_filename,
css_source .. '/' .. css_menu,
}
for i, filepath in pairs(to_be_copied) do
fileattr = lfs.attributes(filepath)
if not fileattr or fileattr.mode ~= 'file' then
print (filepath .. " doesn't exist or is not a file!")
os.exit(1)
end
dest = destination .. '/' .. basename(filepath)
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filecontent = readFile(filepath, 'r')
destfile = assert(io.open(dest, 'wb'))
assert(destfile:write(filecontent))
assert(destfile:close())
end
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--[[ END ]]--