I've looked through several similar questions, but either I didn't understand their answer or my question is different than theirs. So, I have a project contains many subdirecties and different type of files. I would like to search a function name among those .C files only.
Some information on the web suggest to use "Esc x dired-do-query-replace-regexp". However, this will search not just C files, but also other file like .elf which isn't helpfule in my case. Other people sugget to use TAG function, but it will require me to type "etags *.c" for every subdirectory which is also impossible.
How should I do this while working on those large scale software project?
Thanks
Lee
Use ack-grep on linux
ack-grep "keyword" -G *.c
My favorite: igrep-find, found in the package igrep.el. Usage is:
M-x igrep-find some_thing RET *.C
There's the built in grep-find, docs here, but I find it awkward to use.
For a more general answer, see this similar question: Using Emacs For Big Big Projects.
if you're on linux, you can use grep to find files with a certain text in them. you would then do this outside of emacs, in your shell/command prompt. here's a nice syntax:
grep --color=auto --include=*.c -iRnH 'string to search for' /dir/to/search/
the directory to search can be specified relative, so if you're in the directory you want to use as the root directory for your recursive search, you can just skip the whole directory address and specify a single dot.
grep --color=auto --include=*.c -iRnH 'string to search for' .
the part --color=auto makes some text highlighted. --include=*.c is the part that specifies what files to search. in this case, only files with the c-extension. the flag i makes stuff case insensitive, the flag R makes the search recursive, the flag n adds the line number to the report, and the flag H adds the file path to the report.
To breed find and grep there is find-grep function, there you can change the invocation string to find . -name *.c etc. Make it a function, if You like. Then You use eg. C-x` et al. to navigate the results.
To search among the files in one directory i use lgrep, it prompts you in which files to search.
You can use cscope and xcscope.el : http://www.emacswiki.org/emacs/CScopeAndEmacs
Try with dired: place the cursor on the directory name to search, type A and in the minibuffer the text to find.
Related
When searching, VS Code has the ability to list files to include to scope the search. This is used by default when using the "find in folder" feature. For example, searching src results in ./src as the files to include.
Is there a syntax I can use to list multiple directories here? For example, I want to search ./src and ./lib in one search.
Did you try a comma like ./dir1, ./dir2? For me it seems to work
By the way, here is the documentation of 'files to include': https://code.visualstudio.com/Docs/editor/codebasics#_advanced-search-options
In particular, you can use glob notation. Also, VS Code will include/exclude certain directories or files by default, depending on your settings.json, in case anyone still sees unexpected behaviour.
Does Eclipse provide (possibly via a plug-in) the ability to search the local history?
E.g, I have a lot of history files and don't want to have to trawl through them all because I know that the version I want is the most recent which contains the string "slithy toves".
[Update] people answering similar questions on this site have not read the question – or it was badly phrased.
I am not looking to go to the local history (which do know how to find) and manually search through every entry, version by version. I want a single search function which will do that for me.
[Update++] the referenced question does not contain an acceptable answer. The only solution offered there involves creating a dummy project, which is more overehad than I care for.
Note: if it helps anyone, I found that the local history can be found in
Workspace\.metadata\.plugins\org.eclipse.core.resources\.history\
from which, I can use any file search tool of my choice
Manualy search the local history
My answer to the question is "No, you cannot do that search from within Eclipse".
Nevertheless, in this answer to another question you can see the (linux) command line (and the explanation of what it does) to search the local history structure if you know specific code that was in the file you seek (like you indicated "slithy toves"):
fgrep -r -c "[slithy toves]" * | grep -v ":0" | cut -d : -f 1 | xargs ls -l
I found that the local history can be found in
Workspace\.metadata\.plugins\org.eclipse.core.resources\.history\
from which, I can use any file search tool of my choice.
However, filenames all look like 001ad08cc7790016142da217e60cb1a5, so I can't search for widget.c :-(
There is also no index, since I searched for files containing 001ad08cc7790016142da217e60cb1a5, hoping to find maybe some XML which told me the original file name, with a reference to 001ad08cc7790016142da217e60cb1a5, but I found nothing :-(
Also, some of the saved files seem to be binary, and I can't see how to configure Eclipse to save only *.c and *.h
I would like to write a Doxygen comment that names the file in which the comment occurs. Rather than write the filename explicitly, I would like Doxygen to supply me with it. Thus, if I change the name of the file, or move some of the content into a different file, I don't need to change hard-coded instances of the name.
For a concrete example, let's say I'm adding comments to functions in array.hpp, and I want the comment for certain functions to say "This function should only be used within array.hpp." I want to be able to write
/**
* This function should only be used within #thisfile.
*/
where #thisfile is a Doxygen expression that translates into array.hpp within the file array.hpp.
I've looked at the Doxygen documentation, including "Automatic link generation/Links to files" and the entire "Special Commands" section, but I haven't found what I'm looking for. Does such functionality exist?
Note that essentially the same question was asked on the Doxygen mailing list a few weeks ago. It has not received any replies.
General
As far as I know such functionality does not exist out-of-the-box. But you can add it by configuring an INPUT_FILTER in your Doxyfile. The path to the file is passed as an argument to the filter by doxygen. This can be used by the filter to replace your keyword (for example #thisfile) with the path to the file.
Below I give an example how to implement this with bash. A solution for other shells or Windows should be quite similar.
Example for bash
Write a short bash script infiltrate_filename.sh:
#!/bin/bash
pathToScript=`pwd`"/"
sed -e "s:#thisfile:${1/$pathToScript/}:g" $1
This script truncates the path to the file by the working directory. The resulting string is used to replace the keyword of your choice (here: #thisfile).
Make your script executable: chmod +x infiltrate_filename.sh
Set the INPUT_FILTER in your Doxyfile to INPUT_FILTER = ./infiltrate_filename.sh
That's it! 🎉 Now you can use #thisfile in your documentation blocks and it will be replaced by the path to the file. As the paths are relative to Doxygen's working directory they will automatically be linked to the file.
Notes
This solution assumes that the filter script is located in the working directory of doxygen (for example ~/my_project) and that the INPUT files are in subdirectories of the working directory (for example ~/my_project/src/foo/bar).
I have tested this example on a minimum working example. I am not a bash or sed expert. This solution may be improvable.
How can I search files just like with / command but recursively scanning subfolders?
Or maybe there are other approaches to get a list of files that match some pattern in the current folder including all subfolders.
:find command
There is :fin[d] command for that. Internally it invokes find utility (this is configurable via 'findprg' option), so you can do everything find is capable of. That said, in most cases the simple form of the command suffices:
:find *.sh
Note that by default argument is treated as regular file pattern (-name option of find), which is different from regular expressions accepted by /. For searching via regexp, use:
:find -regex '.*_.*'
If you want to scan only specific subfolders, just select them before running the command and search will be limited only to those directories.
:find command brings up a menu with search results. If you want to process them like regular files (e.g. delete, copy, move), hit b to change list representation.
Alternative that uses /
Alternatively you can populate current view with list of files in all subdirectories with command like (see %u):
:!find%u
and then use /, although this might be less efficient.
How do I set up cscope in Emacs when my source code lives in multiple directories?
Say I have several paths for my C++ project:
/path/to/my/code (and subdirectories)
/path/to/other/code (and subdirectories)
/path/to/static/linking/include/files (and subdirectories)
/path/to/static/linking/lib/files' (and subdirectories)
I would like to use xcscope to navigate/look up symbols in my code and the library that I am linking to.
The instructions for xcscope.el say that I should first run C-c s (Cscope->Create list and index) at /path/to/my/code, but I am then confused about how I to have the other paths indexed by cscope.
The documentation says I should go to the other directories and run cscope -b, but what I am supposed to do after that?
I looked at the cscope.files file that C-c s built. I think I am supposed to add my other paths to this file, but this file includes a list of source code files (not directories).
Do I have to manually edit cscope.files to add every single file that I want to index that is outside of my project's root directory?
The documentation is confusing.
I got one sol'n from http://cscope.sourceforge.net/large_projects.html. Still confusing.
cscope.files is aptly named. It is NOT directories. It is files, only files. Which is as daunting as it sounds. What if you have hundreds of files. Then you have to write hundreds of lines, one per file, into cscope.files. No joke.
Automate it with some scripting. E.g., on linux, use bash scripts and redirection (>,>>,|) operators to select and filter files from any and all directories into that cscope.files.
What about the directory where cscope.files resides? IF you don't include those files, it'll only find them when you open your project (in emacs, but probably applicable to any IDE) in that source directory. So, include them, too, for easy opening of your project from anywhere.
The option "recursive/-R" seems obvious to send to cscope-indexer. Nope, not with many root directories. Does nothing (probably could do something with scripts or elisp or who knows). Just feed those files, absolute path, into cscope.files. And you might have to make sure you have only one cscope.files per project. Don't split them up relative to each diretory. Or maybe you can, something to look into.
Remember, include the /path/to/each/file/ before the file if you want cscope.files to point to it from anywhere. cscope isn't "smart", it's dumb, it just takes directions for where to look and it won't know where to look for "filename", without knowing where it is. You're just asking it to call locate filename, which it can't do anyway, when you give it a lonely filename without a dir path outside of the directory that a particular cscope.files resides.
I hope there's a way to use xcscope inside emacs, just adding directories which it will catalog and index, as the xcscope docs and emacs menu suggest. But I didn't succeed in making it work that way.
Wouldn't a soft link (ln -s) work? Worked for me.