79 lines
2.1 KiB
Lua
79 lines
2.1 KiB
Lua
local cmark = require 'cmark'
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local restia = require 'restia'
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local params = require 'params'
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local yaml = require 'lyaml'
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local shapeshift = require 'shapeshift'
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local string = require 'stringplus'
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local function parsedate(date)
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local year, month, day = date:match("(%d+)%-(%d+)%-(%d+)")
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return os.time {
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year = tonumber(year) or error("Invalid date string: " .. date);
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month = tonumber(month) or error("Invalid date string: " .. date);
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day = tonumber(day) or error("Invalid date string: " .. date);
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}
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end
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local validate_head do
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local is = shapeshift.is
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validate_head = shapeshift.table {
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__extra = 'keep';
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title = is.string;
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date = shapeshift.matches("%d%d%d%d%-%d%d%-%d%d");
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file = is.string;
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published = shapeshift.default(false, shapeshift.matches("^true$"))
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}
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end
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local function read_post(file)
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local content = io.open(file):read("*a")
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local head_text, body_text = restia.utils.frontmatter(content)
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local head = head_text and yaml.load(head_text) or {}
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local body = cmark.render_html(cmark.parse_document(body_text, #body_text, cmark.OPT_DEFAULT), cmark.OPT_DEFAULT + cmark.OPT_UNSAFE)
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local cover_image = file:gsub("md$", "jpg")
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if io.open(cover_image) then
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head.cover_image = "/images/" .. cover_image:match("[^/]+$"):gsub(" ", "%%20")
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end
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return { head = head, body = body }
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end
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local posts = {}
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for file in restia.utils.files(params.input, "^./posts/.*%.md$") do
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print("Reading post "..file.."...")
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local post = read_post(file)
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post.head.file = file
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assert(validate_head(post.head))
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post.head.timestamp = parsedate(post.head.date)
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if "string" == type(post.head.tags) then
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post.head.tags = string.split(post.head.tags, "[%a-]+")
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end
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for key, tag in ipairs(post.head.tags or {}) do
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post.head.tags[key] = string.lower(tag)
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end
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post.head.slug = post.head.title
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:gsub(' ', '_')
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:lower()
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:gsub('[^a-z0-9-_]', '')
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post.head.uri = string.format("/%s/%s.html", post.head.date:gsub("%-", "/"), post.head.slug)
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post.path = post.head.uri
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if post.head.published or params.unpublished then
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table.insert(posts, post)
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end
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end
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table.sort(posts, function(a, b)
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return a.head.timestamp > b.head.timestamp
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end)
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return posts
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