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|
use crate::directive::{DirectiveError, DirectiveImplementation, Processed};
use crate::page::PageMeta;
use crate::site::Site;
use crate::wikitext::ParsedDirective;
use html_escape::encode_double_quoted_attribute;
use log::trace;
use std::path::Path;
#[derive(Debug, Eq, PartialEq)]
pub struct Img {
src: String,
link: bool,
align: Option<String>,
alt: Option<String>,
class: Option<String>,
hspace: Option<String>,
height: Option<usize>,
id: Option<String>,
title: Option<String>,
vspace: Option<String>,
width: Option<usize>,
}
impl DirectiveImplementation for Img {
const REQUIRED: &'static [&'static str] = &[];
const ALLOWED: &'static [&'static str] = &[
"align", "alt", "class", "hspace", "id", "link", "size", "title", "vspace",
];
const ALLOW_ANY_UNNAMED: bool = true;
fn from_parsed(p: &ParsedDirective) -> Self {
let unnamed = p.unnamed_args().pop().unwrap();
let mut img = Img::new(unnamed.into());
let args = p.args();
if let Some(link) = args.get("link") {
if *link == "no" {
img.link(false);
}
}
if let Some(size) = args.get("size") {
if let Some((w, h)) = size.split_once('x') {
if let Ok(w) = w.parse() {
img.width(w);
}
if let Ok(h) = h.parse() {
img.height(h);
}
}
}
if let Some(align) = args.get("align") {
img.align(align.to_string());
}
if let Some(alt) = args.get("alt") {
img.alt(alt.to_string());
}
if let Some(class) = args.get("class") {
img.class(class.to_string());
}
if let Some(hspace) = args.get("hspace") {
img.hspace(hspace.to_string());
}
if let Some(id) = args.get("id") {
img.id(id.to_string());
}
if let Some(title) = args.get("title") {
img.title(title.to_string());
}
if let Some(vspace) = args.get("vspace") {
img.vspace(vspace.to_string());
}
img
}
fn process(&self, site: &Site, meta: &mut PageMeta) -> Result<Processed, DirectiveError> {
trace!(
"verify image exists: {} on {}",
self.src,
meta.path().display()
);
let src = site
.resolve(meta.path(), Path::new(&self.src))
.map_err(|e| DirectiveError::Site(Box::new(e)))?;
trace!("img src={:?}", src.display());
let mut img = String::new();
let src = Some(self.src.clone());
if self.link {
img.push_str("<a");
push_attr(&mut img, "href", &src);
img.push('>');
}
img.push_str("<img");
push_attr(&mut img, "src", &src);
if let Some(w) = self.width {
img.push_str(&format!(" width=\"{}\"", w));
}
if let Some(h) = self.height {
img.push_str(&format!(" height=\"{}\"", h));
}
push_attr(&mut img, "align", &self.align);
push_attr(&mut img, "alt", &self.alt);
push_attr(&mut img, "class", &self.class);
push_attr(&mut img, "hspace", &self.hspace);
push_attr(&mut img, "id", &self.id);
push_attr(&mut img, "title", &self.title);
push_attr(&mut img, "vspace", &self.vspace);
img.push('>');
if self.link {
img.push_str("</a>");
}
Ok(Processed::Markdown(img))
}
}
impl Img {
fn new(src: String) -> Self {
Self {
src,
link: true,
align: None,
alt: None,
class: None,
height: None,
hspace: None,
id: None,
title: None,
vspace: None,
width: None,
}
}
fn link(&mut self, link: bool) {
self.link = link;
}
fn align(&mut self, align: String) {
self.align = Some(align);
}
fn alt(&mut self, alt: String) {
self.alt = Some(alt);
}
fn class(&mut self, class: String) {
self.class = Some(class);
}
fn height(&mut self, h: usize) {
self.height = Some(h);
}
fn hspace(&mut self, hspace: String) {
self.hspace = Some(hspace);
}
fn id(&mut self, id: String) {
self.id = Some(id);
}
fn title(&mut self, title: String) {
self.title = Some(title);
}
fn vspace(&mut self, vspace: String) {
self.vspace = Some(vspace);
}
fn width(&mut self, w: usize) {
self.width = Some(w);
}
}
fn push_attr(s: &mut String, name: &str, value: &Option<String>) {
if let Some(v) = value {
s.push_str(&format!(
" {}=\"{}\"",
name,
encode_double_quoted_attribute(v)
));
}
}
|
