From 9e2db6a2e70494e349153091b1a4168b0e5e88a8 Mon Sep 17 00:00:00 2001 From: Dimitri Sokolyuk Date: Tue, 8 Aug 2017 11:49:45 +0200 Subject: Vendor --- vendor/golang.org/x/tools/present/link.go | 100 ++++++++++++++++++++++++++++++ 1 file changed, 100 insertions(+) create mode 100644 vendor/golang.org/x/tools/present/link.go (limited to 'vendor/golang.org/x/tools/present/link.go') diff --git a/vendor/golang.org/x/tools/present/link.go b/vendor/golang.org/x/tools/present/link.go new file mode 100644 index 0000000..2aead35 --- /dev/null +++ b/vendor/golang.org/x/tools/present/link.go @@ -0,0 +1,100 @@ +// Copyright 2012 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package present + +import ( + "fmt" + "log" + "net/url" + "strings" +) + +func init() { + Register("link", parseLink) +} + +type Link struct { + URL *url.URL + Label string +} + +func (l Link) TemplateName() string { return "link" } + +func parseLink(ctx *Context, fileName string, lineno int, text string) (Elem, error) { + args := strings.Fields(text) + if len(args) < 2 { + return nil, fmt.Errorf("link element must have at least 2 arguments") + } + url, err := url.Parse(args[1]) + if err != nil { + return nil, err + } + label := "" + if len(args) > 2 { + label = strings.Join(args[2:], " ") + } else { + scheme := url.Scheme + "://" + if url.Scheme == "mailto" { + scheme = "mailto:" + } + label = strings.Replace(url.String(), scheme, "", 1) + } + return Link{url, label}, nil +} + +func renderLink(href, text string) string { + text = font(text) + if text == "" { + text = href + } + // Open links in new window only when their url is absolute. + target := "_blank" + if u, err := url.Parse(href); err != nil { + log.Println("renderLink parsing url:", err) + } else if !u.IsAbs() || u.Scheme == "javascript" { + target = "_self" + } + + return fmt.Sprintf(`%s`, href, target, text) +} + +// parseInlineLink parses an inline link at the start of s, and returns +// a rendered HTML link and the total length of the raw inline link. +// If no inline link is present, it returns all zeroes. +func parseInlineLink(s string) (link string, length int) { + if !strings.HasPrefix(s, "[[") { + return + } + end := strings.Index(s, "]]") + if end == -1 { + return + } + urlEnd := strings.Index(s, "]") + rawURL := s[2:urlEnd] + const badURLChars = `<>"{}|\^[] ` + "`" // per RFC2396 section 2.4.3 + if strings.ContainsAny(rawURL, badURLChars) { + return + } + if urlEnd == end { + simpleUrl := "" + url, err := url.Parse(rawURL) + if err == nil { + // If the URL is http://foo.com, drop the http:// + // In other words, render [[http://golang.org]] as: + // golang.org + if strings.HasPrefix(rawURL, url.Scheme+"://") { + simpleUrl = strings.TrimPrefix(rawURL, url.Scheme+"://") + } else if strings.HasPrefix(rawURL, url.Scheme+":") { + simpleUrl = strings.TrimPrefix(rawURL, url.Scheme+":") + } + } + return renderLink(rawURL, simpleUrl), end + 2 + } + if s[urlEnd:urlEnd+2] != "][" { + return + } + text := s[urlEnd+2 : end] + return renderLink(rawURL, text), end + 2 +} -- cgit v1.2.3