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Merge pull request #1347 from mauke/url-regex-war-crime

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Allow nested ()/[] brackets in URLs (fixes #1346)
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DeepBlueV7.X 2023-02-02 00:59:18 +01:00 committed by GitHub
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1 changed files with 45 additions and 5 deletions
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50
src/Config.h
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@ -26,11 +26,51 @@ constexpr auto LABEL_MEDIUM_SIZE_RATIO = 1.3;
namespace strings {
const QString url_html = QStringLiteral("<a href=\"\\1\">\\1</a>");
const QRegularExpression url_regex(
// match an URL, that is not quoted, i.e.
// vvvvvv match quote via negative lookahead/lookbehind vv
// vvvv atomic match url -> fail if there is a " before or after vvv
QStringLiteral(
R"((?<!["'])(?>((www\.(?!\.)|[a-z][a-z0-9+.-]*://)[^\s<>'"]+[^!,\.\s<>'"\]\)\:]))(?!["']))"));
// match an unquoted URL
[](){
const auto
general_unicode = QStringLiteral(R"((?:[^\x{0}-\x{7f}\p{Cc}\s\p{P}]|[\x{2010}\x{2011}\x{2012}\x{2013}\x{2014}\x{2015}]))"),
protocol = QStringLiteral(R"((?:[Hh][Tt][Tt][Pp][Ss]?))"),
unreserved_subdelims_colon = QStringLiteral(R"([a-zA-Z0-9\-._~!$&'()*+,;=:])"),
pct_enc = QStringLiteral(R"((?:%[[:xdigit:]]{2}))"),
userinfo = "(?:" + unreserved_subdelims_colon + "*(?:" + pct_enc + unreserved_subdelims_colon + "*)*)",
dec_octet = QStringLiteral(R"((?:25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9][0-9]|[0-9]))"),
ipv4_addr = "(?:" + dec_octet + R"((?:\.)" + dec_octet + "){3})",
h16 = QStringLiteral(R"((?:[[:xdigit:]]{1,4}))"),
ls32 = "(?:" + h16 + ":" + h16 + "|" + ipv4_addr + ")",
ipv6_addr = "(?:"
"(?:" + h16 + ":){6}" + ls32
+ "|" "::(?:" + h16 + ":){5}" + ls32
+ "|" + h16 + "?::(?:" + h16 + ":){4}" + ls32
+ "|" "(?:" + h16 + "(?::" + h16 + "){0,1})?::(?:" + h16 + ":){3}" + ls32
+ "|" "(?:" + h16 + "(?::" + h16 + "){0,2})?::(?:" + h16 + ":){2}" + ls32
+ "|" "(?:" + h16 + "(?::" + h16 + "){0,3})?::" + h16 + ":" + ls32
+ "|" "(?:" + h16 + "(?::" + h16 + "){0,4})?::" + ls32
+ "|" "(?:" + h16 + "(?::" + h16 + "){0,5})?::" + h16
+ "|" "(?:" + h16 + "(?::" + h16 + "){0,6})?::"
")",
ipvfuture = R"((?:v[[:xdigit:]]+\.)" + unreserved_subdelims_colon + "+)",
ip_literal = R"((?:\[(?:)" + ipv6_addr + "|" + ipvfuture + R"()\]))",
host_alnum = "(?:[a-zA-Z0-9]|" + general_unicode + ")",
host_label = "(?:" + host_alnum + "+(?:-+" + host_alnum + "+)*)",
hostname = "(?:" + host_label + R"((?:\.)" + host_label + R"()*\.?))",
host = "(?:" + hostname + "|" + ip_literal + ")",
path = R"((?:/((?:[a-zA-Z0-9\-._~!$&'*+,;=:@/]|)" + pct_enc + R"(|\((?-1)\)|)" + general_unicode + ")*))",
query = R"(((?:[a-zA-Z0-9\-._~!$&'*+,;=:@/?\\{}]|)" + pct_enc + R"(|\((?-1)\)|\[(?-1)\]|)" + general_unicode + ")*)",
fragment = query;
return
R"((?<!["'\w])(?>()"
+ protocol + "://"
+ "(?:" + userinfo + "@)?"
+ host + "(?::[0-9]+)?"
+ path + "?"
R"((?:\?)" + query + ")?"
R"((?:#)" + fragment + ")?"
"(?<![.!?,;:'])"
R"())(?!["']))";
}(),
QRegularExpression::UseUnicodePropertiesOption
);
// A matrix link to be converted back to markdown
static const QRegularExpression
matrixToLink(QStringLiteral(R"(<a href=\"(https://matrix.to/#/.*?)\">(.*?)</a>)"));