in the browsers like chrome and mozilla, when we type "F" it automatically fills the url as "facebook.com", how it works, what is this concept, I want to learn this, can anyone help me by suggesting some links here
A more efficient solution is to use a prefix tree (a trie) to store prefixes of words. That's also how spellcheck systems (such as that found in MS Word, etc) usually work.
Related
I have no idea where to find out about why if I paste this url into the address bar of Chrome, Safari, and Firefox it will be translated into a different URL with a couple of accented characters.
It results in a crypto currency phishing site so beware.
I'm trying to find the logic (javascript) or whatever that causes this translation
The base url is http://www.xn--shapehit-ez9c7y.com
I apologise if this is the wrong site to ask the question on.
This is called PunyCode, which is a way to represent Unicode within the ASCII character set. This allows websites to have names with foreign characters, such as in Chinese or Arabic. While this is incredibly useful, it can also be used for deceptive impersonation (often maliciously, as noted in your question).
Different browsers treat PunyCode differently. For example, Safari and Edge will not attempt to covert PunyCode, and will show the full 'strange' URLs.
However, according to Sophos,
Chrome and Firefox won’t automatically decode punycode URLs if they mix multiple alphabets or languages, on the grounds that such text strings are highly unlikely in real life and therefore suspicious. But both Chrome and Firefox will autoconvert punycode URLs that contain all their characters in the same language.
A security researcher called Xudong Zheng actually registered the domain xn--80ak6aa92e.com, which translates to аррӏе in 'Russian'. When visited in Chrome or Firefox, it looks identical to apple.com in the URL:
Fortunately his site simply warns of this forgery, but it could easily have been used maliciously.
Hope this helps :)
Let's say that I have a set of keywords that I don't want to see in my future Google search results page: {"Naruto","Toriko","One Piece","Conan"} (these are names of anime that I want to quit). Is there a way I can write a lightweight script or something so that whenever I use Google, it filters out pages containing those words? Even if I explicitly search for "Naruto", to Google the query is actually "Naruto -Naruto" so Google won't return anything. It's easy to ignore certain keywords for a single query using advanced search, but how do I ignore a set of keywords for all my queries in the future?
What is the best way to do this? A Chrome extension? A perl script? A javascript? How can I implement this feature for myself? What tools/languages should I use?
This is probably done best in your browser. For example, you could write a Firefox extension to do this. (It would probably even be worth publishing -- others may want this functionality (like parents).)
i am trying to create a Google Chrome extension and i want it to listen to multiple keywords from the Omnibox. To make it short, i want to know whether these two things are possible:
defining multiple omnibox keywords for one extension in the manifest file
letting chrome.omnibox.onInputEntered and other events know what keyword is enabled
thanks in advance.
No, the Chromium developers have made it clear that they will not support multiple omnibox keywords for extensions:
My take on this is that an omnibox keyword is a UI surface, like a page/browser action. We limit extensions to 1 UI surface to avoid adding clutter. Given that, I don't think we should implement this.
Granted, this bug asks for both the ability to define multiple keywords and dynamically change those keywords on the fly. However, the developer response seems opposed to multiple keywords in general.
The same response suggests an alternative:
The keyword is meant to act as a prefix for your extension, so rather than having N keywords, how about 1 keyword that accepts N commands?
Instead of supporting both keyword1 something and keyword2 something, you can use masterkeyword keyword1 something and masterkeyword keyword2 something.
Does anybody know a Windows based searching tool that is easy to use and is programmer
friendly.
The functions I am looking for:
Ignore white space in search
= capable to find
myTestFunction ( $parameter, $another_parameter, $yet_another_parameter )
{ doThis();
using the query
myTestFunction($parameter,$another_parameter,$yet_another_parameter){doThis();
without Regexes.
Search code "semantically" (for me, it would have to be PHP):
Search in comments only
Search in function names only
Search for parameters that are named $xyz
Search in (insert code construct here) only
If there is none around, it's high time somebody developed it! :)
I have opened a bounty for this.
See our SD Search Engine. This is a language-sensitive search engine designed to search large code bases, with special language classifiers for C, C++, Java, C#, COBOL, JavaScript, Ada, Python, Ruby and lot of other languages, including your specific target langauge PHP (PHP4 and PHP5).
I think it does everything you requested.
It indexes the language elements so search across large code bases are extremely fast (Linux Kernal ~~ 7.5 Million lines --> 2.5 seconds). (The indexing step runs
on Windows, but the display engine is in Java.)
Search hits are shown in one-line context hit window showing the file and line number, as well as the line with the hit highlighted. Clicks on hits bring up the source code, tabs expanded appropriately, and the line count right even for languages which have odd line counting rules (such as GCC WRT form characters), with the hit line and hit text highlighted. Clicking in the source window will launch your favorite editor on the file.
Because it understands language elements, it ignores language-specific whitespace. It skips over comments unless you insist they be inspected. Searches thus ignore whitespace, comments and lineboundaries (if the language thinks lineboundaries are whitespace, which is why there are langauge-specific scanners). The query language allows you to specify which language tokens you want (specific tokens in quotes, or generic tokens such as identifiers I, numbers N, strings S, operators O and punctuation P) with constraints on the token value as well as a series of tokens.
Your example search:
myTestFunction($parameter,$another_parameter,$yet_another_parameter){doThis();
would be expressed to the search engine precisely as:
I=myTestFunction '(' I ',' I ',' I ')' '{' I=dothis '(' ')' ';'
but it would probably be easier (less typing) to find it as:
I=myTest* ... I=dothis
where I=myTest* means an identifier starting with myTest and ... means "near".
The Search Engine also offer regular expressions searches on the text, if you insist.
So you still have grep-like searches (a lot slower than indexed searches)
but with the hit window and source display windows too.
I use ack really successfully for this kind of thing, particularly when trying to find things in large codebases. I run it linux myself but I don't see any reason why it won't run on windows or in Cygwin at the very least. Check it out, I think you'll find it is exactly what you're looking for.
Search code "semantically" (for me, it would have to be PHP):
For this you could (and I think should) use some custom code using token_get_all()
See also the available tokens
Ignore white space in search
A simple regex should be sufficient. It depends on your regex-library, but most come with a whitespace modifier/flag.
For my Windows desktop search, I use Agent Ransack. I use this as a replacement for the windows search.
You can use regular expressions, but there is a nice entry screen if you want to avoid entering them directly.
Take a look at Google Desktop API, it has very powerful set of methods to do what you're looking for.
Of course it requires you to have the Google Desktop installed.
After reviewing it a little, it provides some functionality but not that specific as what you require.
I really like Crimson Editor and it allows RegEx searches. It has helped me a bunch over the past six years. I think it will fit your needs. Try it.
I use TextPad for searching code files in Windows. It has a very handy find-in-files function (Search / Find In Files) and you can use regex which should meet any search requirements. In the search results it will list the file location, line number and a snippet from that line.
I know the topic of removing www.experts-echange.com has been beaten to death but having to type -site:www.experts-exchange.com is tedious. Even the ability to auto add strings to a query would solve this problem. I can probably wrap this into some wget mess but this seems like basic functionality many users would base their search engine of choice on. If you have discovered some easy method to do this for yourself please let me know.
I imagine there is a really slick toolbar that feeds google your text plus the additional strings you choose. There is some internal limit to the number of words and or operators Google searches process (with good reason I suppose).
The Google Custom Search API allows you to include or exclude sites from your search. You can add a custom search engine to your iGoogle home page.
Google custom search: http://www.google.com/coop/cse/
2 easy ways in Firefox:
Write a Grease Monkey script.
Use a search keyword. You type the keyword plus a string in the address bar to trigger a search. In this case the URL is http://www.google.com/search?q=-site:expertsexchange.com%20%s. To search on the site your tab is currently in, use javascript:location='http://www.google.com/search?num=100&q=site:'%20+%20escape(location.hostname)%20+%20'%20%S'%20;%20void%200
As an alternative to excluding results, I have a greasemonkey script that highlights google search results by domain. I configure subtle colors for a few sites of interest to me, like wikipedia & stackoverflow. But I use red for expertsexchange, which allows me to visually skip right over it.
I can publish my script if there is interest...
If you want to whip up your own script, you need to operate on two kinds of elements. Here are the two XPath expressions that I use:
//cite[contains(., '" + domain + "')]/ancestor::li[1]
//span[#class='a'][contains(., '" + domain + "')]/ancestor::div[#class='g']
Then I just apply background-color styles to matching elements. Pretty straight forward.