narayanpatra
narayanpatra

Reputation: 5691

How to use cscope?

I am using cscope to get familiar with all the keywords used in socket programming. I went to the directory with c files. I used cscope. and then I searched for AF_INET. I got this:

#define AF_FILE         PF_FILE
#define AF_INET         PF_INET
#define AF_AX25         PF_AX25

This was a full page. I only published part of it. Now I want to know from where this PF_INET is coming? what command I should use. I have seen a guy to double click on PF_INEt and using some command to find it. I don't know what the command is?

The second thing is when I quit the page with :q command. I come to this page:

Global definition: AF_INET

  File     Line
0 socket.h 119 #define AF_INET PF_INET



Find this C symbol:
Find this global definition:
Find functions called by this function:
Find functions calling this function:
Find this text string:
Change this text string:
Find this egrep pattern:
Find this file:
Find files #including this file:

Here the cursor is blinking at 0. If I want to search again something, how I will do?

Upvotes: 17

Views: 82426

Answers (4)

preetham yadav
preetham yadav

Reputation: 1

This file should list all the source files that cscope will analyze. You can generate it automatically with a command like this: bash find . -name "*.c" -o -name "*.h" -o -name "*.cpp" > cscope.files - This command will include all .c, .h, and .cpp files in your project. 3. Build the cscope database: - Run the following command to build the cscope database: bash cscope -b -q -k - -b: Build only (don’t launch the cscope UI). - -q: Create an inverted index to speed up searches. - -k: Do not use the standard system include files. ### Using the cscope Interactive Interface Once the database is built, you can start cscope in interactive mode: bash cscope -d - -d: Use the existing database instead of building a new one. In the interactive interface, you can search for: 1. Find this C symbol: Looks up a symbol in the code. 2. Find this function definition: Locates the definition of a function. 3. Find functions called by this function: Lists functions called within a given function. 4. Find functions calling this function: Lists functions that call a specific function. 5. Find this text string: Searches for a text string. 6. Change this text string: Allows editing of text. 7. Find this egrep pattern: Uses egrep to search for a pattern. 8. Find this file: Locates a file. 9. Find files #including this file: Finds files that include a specific header file. ### Using cscope Non-Interactively You can also use cscope directly from the command line for quick searches without opening the interactive interface: bash cscope -d -L -s <symbol> - -L: Perform a search and print results. - -s <symbol>: Replace <symbol> with what you want to search. ### Integration with vim cscope integrates well with vim if you want to use it within your editor: 1. Open vim and run: vim :cs add cscope.out 2. Now you can use vim commands like: - :cs find d <symbol> to find the definition of a symbol. - :cs find c <symbol> to find functions that call the symbol. - :cs find t <text> to search for text strings. This setup allows for quick and efficient code navigation, especially in large codebases!

strong text

Upvotes: -1

vaishnavi athipatla
vaishnavi athipatla

Reputation: 103

I mostly use the following. These are very basic to understand the cscope.

  1. cscope -R Then you get options.
  2. Press down arrow. Then you will move to your required option. Type whatever you want at the respective option.
  3. From the search result. Use the up and down arrows. Then press the enter to see the detailed file.
  4. :q to exit from the file.
  5. Press Tab to come to the cscope options.
  6. ctrl + d to exit from the cscope.

Upvotes: 10

ninjalj
ninjalj

Reputation: 43688

To exit from cscope interactive prompt, type Ctrl-d. If you just want to rebuild cscope's database, and not invoke cscope's interactive prompt, pass it the -b option. I usually invoke cscope as cscope -bcqR.

As for jumping around in vim using cscope, it really depends on your vim config.

Most probably, jump to tag (Ctrl-]) will use cscope first, then ctags (see :help cst and :help csto). Use Ctrl-T to go back.

There are some useful mappings for cscope that you can find by typing :help cscope-suggestions in vim. After adding those mappings to your .vimrc, you will be able to jump to symbols using Ctrl-_ s, the calling function using Ctrl-_ c, etc...

You can access vim's cscope documentation by typing :help cscope.

Upvotes: 15

Benoit
Benoit

Reputation: 79155

I agree that cscope documentation is not very clear.

Use tab to move to the interactive part. Type your symbol name in “find this C symbol” or “Find this egrep pattern” and validate pressing RETURN.

If you want to call it from vim, type :help if_cscop.txt; hoping it helps!

:cscope add your_cscope_database
:cscope find s [your_symbol]

This will make a new quickfix list. use :cn and :cp to navigate, :cnf and :cpf to navigate from file to file in the results, and :colder and :cnewer to restore previous quickfix lists.

Upvotes: 19

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