hcxselect Documentation

Contents

• Introduction
• Usage information
• Compliance

Introduction

hcxselect is a small CSS selector engine for htmlcxx. It parses CSS selector expressions and applies them to a set of trees of HTML nodes parsed via htmlcxx.

Usage information

The interface of hcxselect is very minimalistic, and using it should be quite straightforward if you're familiar with C++ and htmlcxx. A short example is provided, including a short walk-through.

The library consists of a header and a source file and is currently meant to be directly included in other software, as it provides no installation options.

Compliance

hcxselect aims to comply with the Selectors Level 3 specification. However, a couple of browser-specific selectors are not implemented, as they don't make sense here:

• pseudo-classes: :link, visited, :hover, :active, :focus, :target, :lang, :enabled, :disabled, :checked, :indeterminate

• pseudo-elements: ::before, ::after

The following extra pseudo-classes are provided for convenience:

• :text matches text (i.e., non-text and non-comment node)
• :comment matches comment nodes

License

hcxselect licensed under 3-clause BSD license. However, please be aware that htmlcxx itself uses the GNU Lesser General Public License (LGPL) and uses tree.hh, which in turn is available under the GNU General Public License (GPL), version 2 or 3.

The following is the license text for hcxselect, as present in the distribution's COPYING document:

hcxselect - A CSS selector engine for htmlcxx
Copyright (C) 2011 Jonas Gehring
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.
    * Neither the name of the copyright holders nor the
      names of its contributors may be used to endorse or promote products
      derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.