paste.py 文件源码

def view(slug):
    paste = Paste.get_or_404(slug)
    if paste.password:
        form = PasswordForm()
        if form.validate_on_submit():
            if not paste.verify_password(form.password.data):
                flash('????? ???? ????.', 'error')
                return render_template('password.html', form=form)
        else:
            form.flash_errors()
            return render_template('password.html', form=form)

    viewed = session.setdefault('viewed', [])
    if paste.slug not in viewed:
        viewed.append(paste.slug)
        session.permanent = True
        session.modified = True
        paste.view_count += 1
        db.session.add(paste)
        db.session.commit()

    lexer = get_lexer_by_name(paste.lexer)
    formatter = HtmlFormatter(
        linenos=True,
        linespans='line',
        lineanchors='line',
        anchorlinenos=True,
    )

    return render_template(
        'view.html',
        styles=formatter.get_style_defs(),
        highlighted_source=highlight(paste.source, lexer, formatter),
        lexer=lexer,
        paste=paste,
    )