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-rw-r--r--lib/htmlparser/doc.go3
-rw-r--r--lib/htmlparser/htmlparser.go142
2 files changed, 0 insertions, 145 deletions
diff --git a/lib/htmlparser/doc.go b/lib/htmlparser/doc.go
deleted file mode 100644
index 0e31960..0000000
--- a/lib/htmlparser/doc.go
+++ /dev/null
@@ -1,3 +0,0 @@
-// Package htmlparser contains a HTML parsing system similar to html.parser.HTMLParser in Python 3.
-// The parser uses x/net/html.Tokenizer in the background.
-package htmlparser
diff --git a/lib/htmlparser/htmlparser.go b/lib/htmlparser/htmlparser.go
deleted file mode 100644
index 5ef8d98..0000000
--- a/lib/htmlparser/htmlparser.go
+++ /dev/null
@@ -1,142 +0,0 @@
-// gomuks - A terminal Matrix client written in Go.
-// Copyright (C) 2018 Tulir Asokan
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program. If not, see <http://www.gnu.org/licenses/>.
-
-package htmlparser
-
-import (
- "io"
- "strings"
-
- "golang.org/x/net/html"
-)
-
-// HTMLProcessor contains the functions to process parsed HTML data.
-type HTMLProcessor interface {
- // Preprocess is called before the parsing is started.
- Preprocess()
-
- // HandleStartTag is called with the tag name and attributes when
- // the parser encounters a StartTagToken, except if the tag is
- // always self-closing.
- HandleStartTag(tagName string, attrs map[string]string)
- // HandleSelfClosingTag is called with the tag name and attributes
- // when the parser encounters a SelfClosingTagToken OR a StartTagToken
- // with a tag that's always self-closing.
- HandleSelfClosingTag(tagName string, attrs map[string]string)
- // HandleText is called with the text when the parser encounters
- // a TextToken.
- HandleText(text string)
- // HandleEndTag is called with the tag name when the parser encounters
- // an EndTagToken.
- HandleEndTag(tagName string)
-
- // ReceiveError is called with the error when the parser encounters
- // an ErrorToken that IS NOT io.EOF.
- ReceiveError(err error)
-
- // Postprocess is called after parsing is completed successfully.
- // An unsuccessful parsing will trigger a ReceiveError() call.
- Postprocess()
-}
-
-// HTMLParser wraps a net/html.Tokenizer and a HTMLProcessor to call
-// the HTMLProcessor with data from the Tokenizer.
-type HTMLParser struct {
- *html.Tokenizer
- processor HTMLProcessor
-}
-
-// NewHTMLParserFromTokenizer creates a new HTMLParser from an existing html Tokenizer.
-func NewHTMLParserFromTokenizer(z *html.Tokenizer, processor HTMLProcessor) HTMLParser {
- return HTMLParser{
- z,
- processor,
- }
-}
-
-// NewHTMLParserFromReader creates a Tokenizer with the given io.Reader and
-// then uses that to create a new HTMLParser.
-func NewHTMLParserFromReader(reader io.Reader, processor HTMLProcessor) HTMLParser {
- return NewHTMLParserFromTokenizer(html.NewTokenizer(reader), processor)
-}
-
-// NewHTMLParserFromString creates a Tokenizer with a reader of the given
-// string and then uses that to create a new HTMLParser.
-func NewHTMLParserFromString(html string, processor HTMLProcessor) HTMLParser {
- return NewHTMLParserFromReader(strings.NewReader(html), processor)
-}
-
-// SelfClosingTags is the list of tags that always call
-// HTMLProcessor.HandleSelfClosingTag() even if it is encountered
-// as a html.StartTagToken rather than html.SelfClosingTagToken.
-var SelfClosingTags = []string{"img", "br", "hr", "area", "base", "basefont", "input", "link", "meta"}
-
-func (parser HTMLParser) mapAttrs() map[string]string {
- attrs := make(map[string]string)
- hasMore := true
- for hasMore {
- var key, val []byte
- key, val, hasMore = parser.TagAttr()
- attrs[string(key)] = string(val)
- }
- return attrs
-}
-
-func (parser HTMLParser) isSelfClosing(tag string) bool {
- for _, selfClosingTag := range SelfClosingTags {
- if tag == selfClosingTag {
- return true
- }
- }
- return false
-}
-
-// Process parses the HTML using the tokenizer in this parser and
-// calls the appropriate functions of the HTML processor.
-func (parser HTMLParser) Process() {
- parser.processor.Preprocess()
-Loop:
- for {
- tt := parser.Next()
- switch tt {
- case html.ErrorToken:
- if parser.Err() != io.EOF {
- parser.processor.ReceiveError(parser.Err())
- return
- }
- break Loop
- case html.TextToken:
- parser.processor.HandleText(string(parser.Text()))
- case html.StartTagToken, html.SelfClosingTagToken:
- tagb, _ := parser.TagName()
- attrs := parser.mapAttrs()
- tag := string(tagb)
-
- selfClosing := tt == html.SelfClosingTagToken || parser.isSelfClosing(tag)
-
- if selfClosing {
- parser.processor.HandleSelfClosingTag(tag, attrs)
- } else {
- parser.processor.HandleStartTag(tag, attrs)
- }
- case html.EndTagToken:
- tagb, _ := parser.TagName()
- parser.processor.HandleEndTag(string(tagb))
- }
- }
-
- parser.processor.Postprocess()
-}