notepad++ url processing cyrillic symbols
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Hello, Александр Корженевский and Claudia
Claudia, the regex being used for Internet addresses, below, given in your last post :
[A-Za-z]+://[A-Za-z0-9_\-\+~.:?&@=/%#,;\{\}\(\)\[\]\|\*\!\\]+could be nicely shortened to the regex :
[A-Za-z]+://[]A-Za-z_!#%&(-;=?@[\\{|}~-]+-
I didn’t change the first part
[A-Za-z]+:// -
I just simplify the character class
[]A-Za-z_!#%&(-;=?@[\\{|}~-]+:-
I put the ending square bracket,
], as first character of the class,[....]. So, I do not need to escape it ! -
On the same way, I put the dash sign,
-, as last character of the class. So the antislash is not needed too ! -
The part
(-;is the range, by ascending code-point, of all the characters, between the opening round bracket,(, and the semicolon sign,;, which includes the digits 0 to 9 ! -
Only, the anti-slash symbol need to be escaped
\\!
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Of course, Claudia, your regex would work ! But, I think we would rather use the
\wsyntax which matches any word character, from any Unicode script ( Greek, Cyrillic, Arab, Hebrew,… )Then, this regex would become, as below :
[A-Za-z]+://[]\w!#%&(-;=?@[\\{|}~-]+Cheers,
guy038
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thank you for giving an alternative - tried it with the calls npp uses and it works as well.
Just out of interest, what is the benefit of using this regex?Cheers
Claudia -
Hi, Claudia,
I didn’t understand exactly what you meant ! Did you speak about :
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A) The benefit of adding the
\wsyntax, instead ofA-Za-z0-9_? -
B) The benefit of shortening the original regex, that you gave :
[A-Za-z]+://[A-Za-z0-9_-+~.:?&@=/%#,;{}()[]|*!\]+
to my regex version ?
[A-Za-z]+://[]A-Za-z_!#%&(-;=?@[\\{|}~-]+
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Concerning the first option, the benefit would be that any non-latin character could be part of a Net address !
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As for the second option, it’s just that it “hurts” my eyes to see such a regex, which is far from being irreducible :!! But, anyway, these two regexes match, exactly, the same set of characters.
Cheers,
guy038
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Hi Guy,
no, it was the third option ;-)
[A-Za-z]+://.+?(?= ) vs. [A-Za-z]+://[]A-Za-z_!#%&(-;=?@[\\{|}~-]+Cheers
Claudia -
after doing some tests I figured out that my version
[A-Za-z]+://.+?(?= )has an issue, it expects an space, as separator, at the end but what if the lines end?
So I assume it should be[A-Za-z]+://.*?(?=\s)which works well for the szearios I’ve tested so far.
Cheers
Claudia -
Hi, Александр Корженевский and Claudia,
- From the contents of the Internet Standard document ( January 2005 ), below :
https://tools.ietf.org/html/rfc3986
- from the end of its sections :
https://tools.ietf.org/html/rfc3986#section-2.3
https://tools.ietf.org/html/rfc3986#section-2.5
- From the section :
https://tools.ietf.org/html/rfc3986#section-2.4
- And from the Wikipedia description of the URI syntax, below :
https://en.wikipedia.org/wiki/Uniform_Resource_Identifier#Syntax
I understand that, for handling the validity of an Uniform Resource Identifier, it is necessary to :
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1) Firstly, change any “per-cent” encoded character,
< %80, which is an unreserved character, into its corresponding unreserved form. For example,%61should be rewrittenAand%7fshould be rewritten~ -
2) Secondly, “Per-cent” encode any character, with code
> \x007f, which is NOT an unreserved character, according to its UTF-8 format. For example, theÀwould be “percent” encoded%C3%80and theア( KATAKANA LETTER A ) would be “percent” encoded%e3%82%a2
( At this point, every character of an URI, should be a true ASCII character, with code-point
< \x0080! )- 3) Thirdly, verify, if the resulting address is a valid URI, according to the different rules, below, that describes the generic syntax of an Uniform Resource Identifier ( URI )
So, given the definition of the following entities, below :
ALPHA = "A" / "B" / "C" / ..... / "X" / "Y" / "Z" / "a" / "b" / "c" / ..... / "x" / "y" / "z" DIGIT = "0" / "1" / "2" / "3" / "4" / "5" / "6" / "7" / "8" / "9" HEXDIG = DIGIT / "A" / "B" / "C" / "D" / "E" / "F" / "a" / "b" / "c" / "d" / "e" / "f" dec-octet = DIGIT / %x31-39 DIGIT / "1" DIGIT DIGIT / "2" %x30-34 DIGIT / "25" %x30-35 ; 0-9 10-99 100-199 200-249 250-255 h16 = 1*4HEXDIG ; 16 bits of address represented in hexadecimal ls32 = ( h16 ":" h16 ) / IPv4address ; least-significant 32 bits of address IPv6address = 6( h16 ":" ) ls32 / "::" 5( h16 ":" ) ls32 / [ h16 ] "::" 4( h16 ":" ) ls32 / [ *1( h16 ":" ) h16 ] "::" 3( h16 ":" ) ls32 / [ *2( h16 ":" ) h16 ] "::" 2( h16 ":" ) ls32 / [ *3( h16 ":" ) h16 ] "::" h16 ":" ls32 / [ *4( h16 ":" ) h16 ] "::" ls32 / [ *5( h16 ":" ) h16 ] "::" h16 / [ *6( h16 ":" ) h16 ] "::" pct-encoded = "%" HEXDIG HEXDIG ; Percent encoding unreserved = ALPHA / DIGIT / "-" / "." / "_" / "~" gen-delims = ":" / "/" / "?" / "#" / "[" / "]" / "@" sub-delims = "!" / "$" / "&" / "'" / "(" / ")" / "*" / "+" / "," / ";" / "=" reserved = gen-delims / sub-delims IPvFuture = "v" 1*HEXDIG "." 1*( unreserved / sub-delims / ":" ) pchar = unreserved / pct-encoded / sub-delims / ":" / "@" segment = *pchar segment-nz = 1*pchar segment-nz-nc = 1*( unreserved / pct-encoded / sub-delims / "@" ) ; NON-zero-length segment, without any colon ":"
Then, the generic syntax, of any URI ( Uniform Ressource Identifier ), is :
URI =
scheme ":" [ authority ] path [ "?" query ] [ "#" fragment ]with :
scheme = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." ) authority = [ userinfo "@" ] host [ ":" port ] userinfo = *( unreserved / pct-encoded / sub-delims / ":" ) host = IP-literal / IPv4address / reg-name IP-literal = "[" ( IPv6address / IPvFuture ) "]" IPv4address = dec-octet "." dec-octet "." dec-octet "." dec-octet reg-name = *( unreserved / pct-encoded / sub-delims ) port = *DIGIT path = path-abempty / path-absolute / path-noscheme / path-rootless / path-empty path-abempty = *( "/" segment ) ; begins with a "/" or is EMPTY. Used only if Authority is PRESENT path-absolute = "/" [ segment-nz *( "/" segment ) ] ; beginns with a "/", but NOT "//" path-noscheme = segment-nz-nc *( "/" segment ) ; begins with a NON-colons segment path-rootless = segment-nz *( "/" segment ) ; begins with a SEGMENT path-empty = 0<pchar> ; O character query = *( pchar / "/" / "?" ) fragment = *( pchar / "/" / "?" )
From these different rules, above, and from the most popular schemes, used in URI, I ended to that awful regex, below ( which is far from being complete, anyway ! )
(https?|ftp|mailto|file|data|irc):(//([A-Za-z0-9_.~!$&'()*+,;=-]|%[0-9A-Fa-f][0-9A-Fa-f])+(:[0-9]+)?(/([A-Za-z0-9_.~!$&'()*+,;=:@-]|%[0-9A-Fa-f][0-9A-Fa-f])*)*|/?(([A-Za-z0-9_.~!$&'()*+,;=:@-]|%[0-9A-Fa-f][0-9A-Fa-f])+(/([A-Za-z0-9_.~!$&'()*+,;=:@-]|%[0-9A-Fa-f][0-9A-Fa-f])+)*)?)(\?([A-Za-z0-9_.~!$&'()*+,;=:@/?-]|%[0-9A-Fa-f][0-9A-Fa-f])+)?(#([A-Za-z0-9_.~!$&'()*+,;=:@/?-]|%[0-9A-Fa-f][0-9A-Fa-f])+)?Practically, the normal use of such a validation regex would be quite ridiculous ! So we need to find an other practical regex, in order to help Notepad++ to recognize and properly underline an Internet address !
Note that the default Notepad++ behaviour, about underlining Internet addresses, just follows the URI standards !
For instance, the first address that Александр Корженевский gave, in its first post :
https://www.google.ru/?qws_rd=ssl#newwindow=1&q=notepad%2B%2B+ссылки+русские+символыshould be previously, rewritten as
https://www.google.ru/?gws_rd=ssl#newwindow=1&q=notepad%2B%2B+%D1%81%D1%81%D1%8B%D0%BB%D0%BA%D0%B8+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%B8%D0%B5+%D1%81%D0%B8%D0%BC%D0%B2%D0%BE%D0%BB%D1%8BReferring to the table, below :
*------------*--------------*---------------------* | Cyrillic | Unicode | Per-Cent Encoding | | Charcter | Code-Point | based on UTF-8 | *------------*--------------*---------------------* | с | 0441 | %D1%81 | | с | 0441 | %D1%81 | | ы | 044b | %D1%8B | | л | 043b | %D0%BB | | к | 043a | %D0%BA | | и | 0438 | %D0%B8 | | | | | | р | 0440 | %D1%80 | | у | 0443 | %D1%83 | | с | 0441 | %D1%81 | | с | 0441 | %D1%81 | | к | 043a | %D0%BA | | и | 0438 | %D0%B8 | | е | 0435 | %D0%B5 | | | | | | с | 0441 | %D1%81 | | и | 0438 | %D0%B8 | | м | 043c | %D0%BC | | в | 0432 | %D0%B2 | | о | 043e | %D0%BE | | л | 043b | %D0%BB | | ы | 044b | %D1%8B | *------------*--------------*---------------------*You’ll easily notice, that, once pasted in Notepad++ :
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The first address does not underline all the Cyrillic characters
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The second address is totally underlined, due to the per-cent encoding of all these Cyrillic characters
However, we should force the first address to be a valid one, allowing any word character to be part of an address, as most the addresses are not “well-formed”, with the per-cent mechanism !
But this condition is NOT sufficient ! Indeed, contrary to what I said, in my previous post, we meed to match NON-word characters, too ! Just imagine the simple address below :
https://www.google.fr/?gws_rd=ssl#newwindow=1&q=€When you copy this address, in a new tab, Notepad++ underlined all this link, except for the single
€sign. Nevertheless, if you select all that link, with the Euro sign, and paste it, for instance, in the Firefox address field, it does correctly display the Google results, for the Euro sign ( If, of course, the Goggle site is your default site, on opening Firefox )So, my regex is wrong. In conclusion, Claudia, we could merge the exact regex for the Scheme frist component of an URI with your general regex, for the remainder of an URI, giving the final regex :
(?-s)[A-Za-z][A-Za-z0-9+.-]+://.*?(?=\s)We could, also, use the more restrictive Wikipedia form :
(?-s)(https?ftp|mailto|file|data|irc)://.*?(?=\s)=> These regexes should be used, in N++ code, to underline any Internet address :-))
Notes :
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The use of
\sis the best syntax, as it matches, either, any horizontal or any vertical blank character, as the limit of the address -
However, Claudia and All, just be aware that this regex is, really, NOT restrictive, for the four last components of an URI ( Authority, Path, Query and Fragment ) !!
Best Regards,
guy038
P.S.
If you would like to break down a WELL-formed URI reference, in order to find its five components, you can use the S/R, below.
Why is this S/R so simple, compared to the enormous regex, used for Internet address validation ? Well, because we, simply, suppose that the matched address is a well-formed URI and that we just want to split it, in some parts !
So, the S/R, below, replace any correct Internet address, by the description of its five main components. Note that some parts may be undefined.
SEARCH
^([^\r\n:/?#]+):(?://([^\r\n/?#]*))?([^?#]*)(?:\?([^\r\n#]*))?(?:#([^\r\n]*))?REPLACE
Scheme = \1\r\nAuthority = \2\r\nPath = \3\r\nQuery = \4\r\nFragment = \5 -
Hello to everyone,
thank you guy for doing this research, good as always.
Yesterday I did some checks and create a python script
which let me test every unicode code point in the range
of 0x0 to ox10FFFF.
I will redo the tests with the new regex and see how it behaves.Two comments:
a) we cannot use the more restrictive version as there are much more schemes available.
See https://www.iana.org/assignments/uri-schemes/uri-schemes.xhtml.b) the regex needs an $ at the end as the url can be the last entry in a document
and then we do not have any whitespace char at all.Keep you updated.
Cheers
Claudia -
Hello,
did some further tests to identify which unicode chars would “break” the regex.
“Break” like would match until the char appears.The obvious ones
0x0 = NULL 0x9 = TAB 0xA = LineFeed 0xB = VerticalTab 0xC = FormatFeed 0xD = CarriageRetrun 0x20 = Space 0x85 = Next Line 0xa0 = No-Break Space 0x1680 = Ogham Space Makr 0x2000 = En Quad 0x2001 = Em Quad 0x2002 = En Space 0x2003 = Em Space 0x2004 = Three-Per-Em Space 0x2005 = Four-Per-Em Space 0x2006 = Six-Per-Em Space 0x2007 = Figure Space 0x2008 = Punctuation Space 0x2009 = Thin Space 0x200A = Hair Space 0x200C = Zero Width Non-Joiner 0x200D = Zero Width Joiner 0x200E = Left-To-Right Mark 0x200F = Right-To-Left Mark 0x2028 = Line Separator 0x2029 = Paragraph Separator 0x202f = Narrow No-Break Space 0x205f = Medium Mathematical Space 0x3000 = Ideographic Spaceand some unusual ones.
To be more precise a strange pattern started.
Every 0x?0085, 0x?2028 and 0x?2029 would “break” the regex.0x10085 LINEAR B IDEOGRAM B105M STALLION 0x12028 Cuneiform Sign Al Times Ush 0x12029 Cuneiform Sign Alan 0x20085 CJK UNIFIED IDEOGRAPH = 𠂅 0x22028 CJK UNIFIED IDEOGRAPH = 𠂅 0x22029 CJK UNIFIED IDEOGRAPH = 𢀨and reported as Unknown - Unknown Script by unicode.org
(I guess means that those a valid values but reserved for future use)0x30085, 0x32028, 0x32029, 0x40085, 0x42028, 0x42029, 0x50085, 0x52028, 0x52029, 0x60085, 0x62028, 0x62029, 0x70085, 0x72028, 0x72029, 0x80085, 0x82028, 0x82029, 0x90085, 0x92028, 0x92029, 0xa0085, 0xa2028, 0xa2029, 0xb0085, 0xb2028, 0xb2029, 0xc0085, 0xc2028, 0xc2029, 0xd0085, 0xd2028, 0xd2029, 0xe0085, 0xe2028, 0xe2029, 0xf0085, 0xf2028, 0xf2029, 0x100085, 0x102028, 0x102029I can’t really explain why this happened.
Maybe someone has an idea or insight?Also, are these three Han Script symbols valid symbols in terms of used in text?
Nevertheless, keeping in mind that, currently,
no “unicode” url gets formatted as link,
I would still ask for replacing the currently used regex with this one(?-s)[A-Za-z][A-Za-z0-9+.-]+://.*?(?=\s|$)A couple of further tests outstanding - hope to get it done in the next days.
Cheers
Claudia -
The following tests have been successfully passed
Tested within the range of 0x0-0x10FFFF.start of file tests
-url at start of file (no additional text) (also end of file test)
-url at start of file (followed by tab)
-url at start of file (followed by space)
-url at start of file (followed by eol)
-url at start of file (followed by tab and text)
-url at start of file (followed by space and text)
-url at start of file (followed by eol and text)end of file tests
-url at end of file (preceded by tab)
-url at end of file (preceded by space)
-url at end of file (preceded by eol)
-url at end of file (preceded by text and tab)
-url at end of file (preceded by text and space)
-url at end of file (preceded by text and eol)in the middle of a file tests
-url in the middle of a file (preceded and followed by tab)
-url in the middle of a file (preceded and followed by space)
-url in the middle of a file (preceded and followed by eol)
-url in the middle of a file (preceded and followed by text and tab)
-url in the middle of a file (preceded and followed by text and space)
-url in the middle of a file (preceded and followed by text and eol)From my point of view it looks ok.
I’m going to open an enhancement request at github.Cheers
Claudia -
I have the same problem with cyrillic. Please open an issue in github - go to https://github.com/notepad-plus-plus/notepad-plus-plus/issues sign in with your account and create a
New issue. Also it is good to put this disqus url. -
:-) has been already done ;-)
https://github.com/notepad-plus-plus/notepad-plus-plus/issues/2798Cheers
Claudia -
Hi Claudia and All,
Remainder :
Unicode is organized, within 17 planes, each composed of 65536 code-points => 1,114,112 possible values ! Only FIVE planes are defined. These are :
- The BMP ( BASIC MULTILINGUAL Plane ) = Plane 0, from code-point U+0000 to code-point U+FFFF - The SMP ( SUPPLEMENTARY MULTILINGUAL Plane ) = Plane 1, from code-point U+10000 to code-point U+1FFFF - The SIP ( SUPPLEMENTARY IDEOGRAPHIC Plane ) = Plane 2, from code-point U+20000 to code-point U+2FFFF - The SSP ( SUPPLEMENTARY SPECIAL-PURPOSE Plane ) = Plane 14, from code-point U+E0000 to code-point U+EFFFF - The SPUA ( SUPPLEMENTARY PRIVATE USE Area ) = Plane 15, from code-point U+F0000 to code-point U+FFFFF - The SPUA ( SUPPLEMENTARY PRIVATE USE Area ) = Plane 16, from code-point U+100000 to code-point U+10FFFFUp to now, even with the recent Unicode 9.0 version, all the other planes, from 3 to 13, are NOT used and all the corresponding code-points, from U+30000 to U+DFFFF are NOT assigned, except for the last two code-points of each place, which are assigned as NON characters
So, Claudia :
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From your first list : the range
\x{0000},\x{0009}…\x{205F},\x{3000}( 30 values ) -
From the second one : the values U+10085, U+12028, U+12029, U+20085, U+22028 and U+22029 ( 6 values )
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From your last list : the range U+30085…U+102029 ( 42 values )
I built a test file, containing all these characters, preceded by the letter
aand followed by the letterz
Then, I tried to determine all the 3-characters string aXz, which was matched by the regex
a\sz. After some tests, I can affirm that the\sregex, in a file with UNICODE encoding, matches any single character of the following list, ONLY :- TABULATION ( \t ) - NEW LINE ( \n ) - VERTICAL TABULATION ( \x0B ) - FORM FEED ( \f ) - CARRIAGE RETRUN ( \r ) - SPACE ( \x20 ) - NEXT LINE ( \x85 ) - NO BREAK SPACE ( \xA0 ) - OGHAM SPACE MARK ( \x{1680} ) - EN QUAD ( \x{2000} ) - EM QUAD ( \x{2001} ) - EN SPACE ( \x{2002} ) - EM SPACE ( \x{2003} ) - THREE-PER-EM SPACE ( \x{2004} ) - FOUR-PER-EM SPACE ( \x{2005} ) - SIX-PER-EM SPACE ( \x{2006} ) - FIGURE SPACE ( \x{2007} ) - PUNCTUATION SPACE ( \x{2008} ) - THIN SPACE ( \x{2009} ) - HAIR SPACE ( \x{200A} ) - LINE SEPARATOR ( \x{2028} ) - PARAGRAPH SEPARATOR ( \x{2029} ) - NARROW NO-BREAK SPACE ( \x{202F} ) - IDEOGRAPHIC SPACE ( \x{3000} )And, except for the MEDIUM MATHEMATICAL SPACE ( \x205F ), which is NOT matched by the
\sregex, this list is identical to the list of characters, that the UNICODE Consortium considers as White_Space characters. Refer to the link, below :http://www.unicode.org/Public/UCD/latest/ucd/PropList.txt
UPDATE on 02-17-2018 : just looks the definitive list of Unicode BLANK characters, below :
Finally, as most of these “White_Space” characters are quite exotic and very rarely used, in normal writing, the idea to use
\ssyntax, in a look-ahead, as a limit to an Internet address, seems quite pertinent !
Claudia, the new regex, to determine all the contents of an address, could, also, be written :
(?-s)[A-Za-z][A-Za-z0-9+.-]+://.*?(?=\s|\z)Indeed, the case
(?=\s)always happens, except when an Internet address would end the last line of a file, without any line-break ! And this specific case is just matched with the second(?=\z)syntax ;-)Best Regards,
guy038
P.S. :
Claudia, I haven’t find some spare time, yet, to have a look to your new version of the RegexTexter script, with the Time regex test option. Just be patient a couple of days :-)
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Hi Guy,
thank you for doing and researching this and the confirmation about the test.
But I don’t get the same result for \x205f
So, as you see I used python script to add the char
editor.appendText('a'+unichr(0x205f)+'z')and it looks like it matched as well.
In regards to the time regex option, take your time, you don’t even have to waste your time doing it - if you find it useful, use it, otherwise chuck it into the bin. ;-)
Cheers
Claudia -
Please explain what I need to do with the regexp
For notepad++ processing with Cyrillic characters in the url?
https://lh3.googleusercontent.com/-Rcx51vbIw0U/WGphx4PJ_MI/AAAAAAAAEV0/znXcaeFVKZE/s0/screenshot%25202017-01-02%2520001.jpg
thanks in advance.
sorry for the stupid question.
smile -
You can’t do anything. It was just a discussion for a probably new regex between guy038 and me.
There has been an issue addressed at github and now it is up to Don to decide if it gets changed or not.
Or if you familiar with C/C++ and using Visual Studio you could compile npp yourself with the changed regex.Cheers
Claudia -
I hope these corrections will be made
Cheers
Alexandr -
Please give instructions on how to compile notepadd++ with support url processing cyrillic symbols.
Thanks in advance. -
Here is described how to build notepad++. Please use Visual Studio 2015 or 2017 as there was a commit that this has been changed lately.
In …\notepad-plus-plus\PowerEditor\src\Notepad_plus.h source file you need to replace#define URL_REG_EXPR "[A-Za-z]+://[A-Za-z0-9_\\-\\+~.:?&@=/%#,;\\{\\}\\(\\)\\[\\]\\|\\*\\!\\\\]+"with a different regex, like the one from here. Make sure you do proper escaping.
So the steps needed are
- Install Visual Studio 2015 or VS2017 and the SDK (Software Development Kit)
- Install git software
- Clone the repo from https://github.com/notepad-plus-plus/notepad-plus-plus.git
- Modify the Notepad_plus.h file using Visual Studio
- Follow the instruction to compile npp like given on github page
- Copy the scilexer.dll from an official distribution (otherwise integrity check will fail)
- Cross fingers.
Hope I didn’t forget anything.
Cheers
Claudia -
Please tell me the correct line ready for replacement.
For Notepad to accept Russian characters in the url.
Sorry for the stupid question. smile
Why the creators can’t add fixes to the code for all? -
file Notepad_plus.h and change the following line
//#define URL_REG_EXPR "[A-Za-z]+://[A-Za-z0-9_\\-\\+~.:?&@=/%#,;\\{\\}\\(\\)\\[\\]\\|\\*\\!\\\\]+" #define URL_REG_EXPR "(?-s)[A-Za-z][A-Za-z0-9+.-]+://[^\\s]+?(?=\\s|\\z)"Why the creators can’t add fixes to the code for all?
It is still an issue only so as long as no one makes a proper pull request there
is little chance that it gets implemented. Unfortunately, my working agreements
do not allow me to share code on github, sourceforge …, so I can’t do, it at least
for the moment.Cheers
Claudia
