I need to extract all links from html page using regular expressions in C++. Can anybody help me please ?
This is a hard job for a regex, and in C++ it's even harder. I actually wrote a parser for a project I did for school a few years ago. You can use this if you find that it works, but I would test it on what you want before you rely on it for anything important.
Feel free to modify/use it, whatever
I realized there were some mistakes in my code, and that I should probably include the header file. Also included is the cmakelists file but it's trivial. The ParserTest.cpp file basically lets you parse links from an input string from the command line.
http://www.mediafire.com/?0u5ppq0gzgdyg
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I have virtually no knowledge of how to use Source Graph but I do know what Source Graph is and what RegEx is and its application across platforms. I am trying to learn how to better search for strings, variables, etc. in Source Graph so I can solve coding issues at work. I am not a coder/programmer/engineer but I have some general knowledge of programming in C and Python and using Query Languages.
I have gone to Source Graph's instructional page about RegEx but I honestly have a hard time understanding it.
Example:
I am trying to find "Delete %(folder_name)s and %(num_folders)s other folder from your ..." without the actual quotes and ellipses.
That is how I receive the code at work but this apparently is not how it is represented in Source Graph in its source file.
If I copy and paste that above line into Source Graph, I get no returns.
Here is what I found how the source file actually looks like in Source Graph:
"Delete \u201c%(folder_name)s\u201d and %(num_folders)s other folder from your ..." , again without actual quotes and ellipses.
I would have no idea that the \u201c and \201d were there in the original code. Is there a way around this?
What I usually have to work with and figure out how to find in Source Graph are singular variables or strings:
%(num_folders)s
This is a problem because the fewer items I have for searching, the harder it is to hunt down their source. I don't know who the author/engineer is until I find the code in Source Graph and check the blame feature (sadly it's a little disorganized at my work).
Sorry if this doesn't make any sense. This is my very first Stack Overflow post.
I can't the snippet you mentioned on sourcegraph.com, so I assume you are hosting Sourcegraph yourself.
In general, you could search for a term like Delete \u201c%(folder_name)s without turning on regular expressions to get literal matches. If you want to convert this into a regular expression, you would need to escape it like this:
Delete \\u201c%\(folder_name\)s
If %(folder_name) is meant to be a placeholder for any other expression, try this one instead:
Delete .*s and .*s other folder from your
https://regex101.com/ is my personal recommendation for learning more about how regular expressions work.
I am creating custom snippets for flutter/dart. My goal is to pull the file name (TM_FILENAME_BASE) remove all of the underscores and convert it to PascalCase (or camelCase).
Here is a link to what I have learned so far regarding regex and vscode's snippets.
https://code.visualstudio.com/docs/editor/userdefinedsnippets
I have been able to remove the underscores nicely with the following code
${TM_FILENAME_BASE/[\\_]/ /}
I can even make it all caps
${TM_FILENAME_BASE/(.*)/${1:/upcase}/}
However, it seems that I cannot do two steps at a time. I am not familiar with regex, this is just me fiddling around with this for the last couple of days.
If anyone could help out a fellow programmer just trying make coding simpler, it would be really appreciated!
I expect the output of "my_file_name" to be "MyFileName".
It's as easy as that: ${TM_FILENAME_BASE/(.*)/${1:/pascalcase}/}
For the camelCase version you mentioned, you can use:
${TM_FILENAME_BASE/(.*)/${1:/camelcase}/}
I've been studying content on the regex topic, but am having trouble understanding how to make it work! I need to build a regex to locate a particular string, potentially in multiple places throughout numerous log files. If I were keying the search expression into a text editor, it would look like this...
*Failed to Install*
Following is a typical example of a line containing the string I would like to search for (exit code # will vary)
!!! Failed to install, with exit code 1603
I would really appreciate any help on how to build the regex for this. I suspect I might need the end of line character too?
I plan on using it in a variation of the script that was provided by https://stackoverflow.com/users/3142139/m-hassan in the following thread
Use PowerShell to Quickly Search Files for Regex and Output to CSV
I'm a newbie to powershell scripts, but I'd rather spend the time to figure this out, than pour over hundreds of log files!
Thanks,
Jim
You're in luck - You only require very simple regex for this. Assuming you want to capture the error code, this will work fine:
^.*Failed to install.*(exit code \d+)$
Try it online!
If you don't care about the error code, and just want to know if it failed or not, you can honestly get away with something as simple as:
^.*Failed to install.*$
Hope this helps.
I'm trying to spellcheck a latex file. I would like the spellchecker to ignore strings containing a number. In my settings file I have
"ignored_words":
[
"textbf",
"renewenvironment",
etc...
]
If I add something like ".*[0-9].*" to "ignored_words" it doesn't seem to do anything. Is there a way to accomplish this?
It is not possible to use regex in spell checking at this point.
ST uses Hunspell as its spell checker. Adding regex to Hunspell is an open feature request. Not being closed means there is some hope that it may be on a long term enhancement list, maybe.
Until Hunspell adds this capability it seems impossible to achieve what you are seeking in ST.
Keeping an eye on the feature request may be worth it to see if there is any progress.
I've to read and parse HTML file and populate a data structure (in C++). I'm planning to do the parsing using perl (so I can use some other perl modules.). My requirement is this.
Get the file from gui (C++ code)
Pass it to perl.
Parse file on perl side (perl script using some other perl modules), populate the C++ structure
Continue working on C++ side with the populated structure.
I'm reading about extending and embedding perl, but unable to figure out the correct procedure. Any help would be greatly appreciated.
In your reading did you find perlembed in Perl's documentation? That's the definitive resource for learning how to embed Perl in a C/C++ program. The author of the document was one of the original mod_perl developers, I believe.
I don't think that embedding Perl for a trivial task would be the easiest solution when compared to doing a system call to perl and parsing the result, but for more involved needs it's certainly a solution.
I've used swig to connect C++ and Python. The documentation says it works for Perl, also.
Yet another alternative is to have perl drive your C++ code. Write a function that has a perl-side implementation that calls a corresponding C-side implementation. Do man perlxs and perlxstut for more info.
Edit: Or read it online at http://perldoc.perl.org/perlxs.html and http://perldoc.perl.org/perlxstut.html.