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authorWim <wim@42.be>2022-09-05 21:00:54 +0200
committerGitHub <noreply@github.com>2022-09-05 21:00:54 +0200
commitfda05f22629156cc2eae130b501ebced2261ab42 (patch)
treeb9761fb5202ab476b11c1136a5bea69df0dd0f83 /vendor/github.com/gomarkdown/markdown/parser/parser.go
parent7abf1a5884bfba9ac19df26495924d86613874f3 (diff)
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Update dependencies and fix whatsmeow API changes (#1887)
* Update dependencies * Fix whatsmau API changes
Diffstat (limited to 'vendor/github.com/gomarkdown/markdown/parser/parser.go')
-rw-r--r--vendor/github.com/gomarkdown/markdown/parser/parser.go95
1 files changed, 70 insertions, 25 deletions
diff --git a/vendor/github.com/gomarkdown/markdown/parser/parser.go b/vendor/github.com/gomarkdown/markdown/parser/parser.go
index 19d1f70b..07444cd8 100644
--- a/vendor/github.com/gomarkdown/markdown/parser/parser.go
+++ b/vendor/github.com/gomarkdown/markdown/parser/parser.go
@@ -84,7 +84,9 @@ type Parser struct {
// the bottom will be used to fill in the link details.
ReferenceOverride ReferenceOverrideFunc
- // TODO: documentation
+ // IsSafeURLOverride allows overriding the default URL matcher. URL is
+ // safe if the overriding function returns true. Can be used to extend
+ // the default list of safe URLs.
IsSafeURLOverride func(url []byte) bool
Opts Options
@@ -390,35 +392,35 @@ func (p *Parser) parseRefsToAST() {
//
// Consider this markdown with reference-style links:
//
-// [link][ref]
+// [link][ref]
//
-// [ref]: /url/ "tooltip title"
+// [ref]: /url/ "tooltip title"
//
// It will be ultimately converted to this HTML:
//
-// <p><a href=\"/url/\" title=\"title\">link</a></p>
+// <p><a href=\"/url/\" title=\"title\">link</a></p>
//
// And a reference structure will be populated as follows:
//
-// p.refs["ref"] = &reference{
-// link: "/url/",
-// title: "tooltip title",
-// }
+// p.refs["ref"] = &reference{
+// link: "/url/",
+// title: "tooltip title",
+// }
//
// Alternatively, reference can contain information about a footnote. Consider
// this markdown:
//
-// Text needing a footnote.[^a]
+// Text needing a footnote.[^a]
//
-// [^a]: This is the note
+// [^a]: This is the note
//
// A reference structure will be populated as follows:
//
-// p.refs["a"] = &reference{
-// link: "a",
-// title: "This is the note",
-// noteID: <some positive int>,
-// }
+// p.refs["a"] = &reference{
+// link: "a",
+// title: "This is the note",
+// noteID: <some positive int>,
+// }
//
// TODO: As you can see, it begs for splitting into two dedicated structures
// for refs and for footnotes.
@@ -693,8 +695,8 @@ gatherLines:
return
}
-// isPunctuation returns true if c is a punctuation symbol.
-func isPunctuation(c byte) bool {
+// IsPunctuation returns true if c is a punctuation symbol.
+func IsPunctuation(c byte) bool {
for _, r := range []byte("!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~") {
if c == r {
return true
@@ -703,20 +705,63 @@ func isPunctuation(c byte) bool {
return false
}
-// isSpace returns true if c is a white-space charactr
-func isSpace(c byte) bool {
+// IsSpace returns true if c is a white-space charactr
+func IsSpace(c byte) bool {
return c == ' ' || c == '\t' || c == '\n' || c == '\r' || c == '\f' || c == '\v'
}
-// isLetter returns true if c is ascii letter
-func isLetter(c byte) bool {
+// IsLetter returns true if c is ascii letter
+func IsLetter(c byte) bool {
return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')
}
-// isAlnum returns true if c is a digit or letter
+// IsAlnum returns true if c is a digit or letter
// TODO: check when this is looking for ASCII alnum and when it should use unicode
-func isAlnum(c byte) bool {
- return (c >= '0' && c <= '9') || isLetter(c)
+func IsAlnum(c byte) bool {
+ return (c >= '0' && c <= '9') || IsLetter(c)
+}
+
+var URIs = [][]byte{
+ []byte("http://"),
+ []byte("https://"),
+ []byte("ftp://"),
+ []byte("mailto:"),
+}
+
+var Paths = [][]byte{
+ []byte("/"),
+ []byte("./"),
+ []byte("../"),
+}
+
+// IsSafeURL returns true if url starts with one of the valid schemes or is a relative path.
+func IsSafeURL(url []byte) bool {
+ nLink := len(url)
+ for _, path := range Paths {
+ nPath := len(path)
+ linkPrefix := url[:nPath]
+ if nLink >= nPath && bytes.Equal(linkPrefix, path) {
+ if nLink == nPath {
+ return true
+ } else if IsAlnum(url[nPath]) {
+ return true
+ }
+ }
+ }
+
+ for _, prefix := range URIs {
+ // TODO: handle unicode here
+ // case-insensitive prefix test
+ nPrefix := len(prefix)
+ if nLink > nPrefix {
+ linkPrefix := bytes.ToLower(url[:nPrefix])
+ if bytes.Equal(linkPrefix, prefix) && IsAlnum(url[nPrefix]) {
+ return true
+ }
+ }
+ }
+
+ return false
}
// TODO: this is not used
@@ -809,7 +854,7 @@ func slugify(in []byte) []byte {
sym := false
for _, ch := range in {
- if isAlnum(ch) {
+ if IsAlnum(ch) {
sym = false
out = append(out, ch)
} else if sym {