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URL linker: count open/close parens, simplify regex

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Marvin W 2019-12-29 16:11:53 +01:00
parent 4a3cef89fd
commit 81bde9197b
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GPG key ID: 072E9235DB996F2A
1 changed files with 37 additions and 1 deletions
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38
main/src/ui/util/helper.vala
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@ -1,3 +1,4 @@
using Gee;
using Gtk;
using Dino.Entities;
@ -6,6 +7,7 @@ using Xmpp;
namespace Dino.Ui.Util {
private static Regex url_regex;
private static Map<unichar, unichar> matching_chars;
private const string[] allowed_schemes = {"http", "https", "ftp", "ftps", "irc", "ircs", "xmpp", "mailto", "sms", "smsto", "mms", "tel", "geo", "openpgp4fpr", "im", "news", "nntp", "sip", "ssh", "bitcoim", "sftp", "magnet", "vnc"};
private const string[] tango_colors_light = {"FCE94F", "FCAF3E", "E9B96E", "8AE234", "729FCF", "AD7FA8", "EF2929"};
private const string[] tango_colors_medium = {"EDD400", "F57900", "C17D11", "73D216", "3465A4", "75507B", "CC0000"};
@ -250,11 +252,21 @@ public static bool is_24h_format() {
public static Regex get_url_regex() {
if (url_regex == null) {
url_regex = /\b((https?|ftps?|ircs?|xmpp|mailto|sms|smsto|mms|tel|geo|openpgp4fpr|im|news|nntp|sip|ssh|bitcoin|sftp|magnet|vnc|urn):(\/\/([^\/?#,;!)}>"'»”’\s]+)(\/([^#\s,.;!?)\]}>"'»”’]|[,.;!)\]}>"'»”’][^?#\s])*)?|([^\/#\s,.;!?)\]}>"'»”’]|[,.;!)\]}>"'»”’][^\/?#\s])*)(\?([^#\s,.;!?)\]}>"'»”’]|[,.;!?)\]}>"'»”’][^#\s])+)?(#([^\s,.;!?)\]}>"'»”’]|[,.;!?)\]}>"'»”’][^\s])+)?)/;
url_regex = /\b(((http|ftp)s?:\/\/|(ircs?|xmpp|mailto|sms|smsto|mms|tel|geo|openpgp4fpr|im|news|nntp|sip|ssh|bitcoin|sftp|magnet|vnc|urn):)([^\s,.;!?"'»”’]|[,.;!?"'»”’]\S)+)/;
}
return url_regex;
}
public static Map<unichar, unichar> get_matching_chars() {
if (matching_chars == null) {
matching_chars = new HashMap<unichar, unichar>();
matching_chars[")".get_char(0)] = "(".get_char(0);
matching_chars["]".get_char(0)] = "[".get_char(0);
matching_chars["}".get_char(0)] = "{".get_char(0);
}
return matching_chars;
}
public static string parse_add_markup(string s_, string? highlight_word, bool parse_links, bool parse_text_markup, bool already_escaped_ = false) {
string s = s_;
bool already_escaped = already_escaped_;
@ -266,6 +278,30 @@ public static string parse_add_markup(string s_, string? highlight_word, bool pa
int start, end;
match_info.fetch_pos(0, out start, out end);
string link = s[start:end];
Map<unichar, unichar> matching_chars = get_matching_chars();
unichar close_char;
int last_char_index = link.length;
while (link.get_prev_char(ref last_char_index, out close_char) && matching_chars.has_key(close_char)) {
unichar open_char = matching_chars[close_char];
unichar char;
int index = 0;
int open = 0, close = 0;
while (link.get_next_char(ref index, out char)) {
if (char == open_char) {
open++;
} else if (char == close_char) {
close++;
}
}
if (close > open) {
// Remove last char from url
end -= close_char.to_string().length;
link = s[start:end];
} else {
break;
}
}
if (GLib.Uri.parse_scheme(link) in allowed_schemes) {
return parse_add_markup(s[0:start], highlight_word, parse_links, parse_text_markup, already_escaped) +
"<a href=\"" + Markup.escape_text(link) + "\">" + parse_add_markup(link, highlight_word, false, false, already_escaped) + "</a>" +