Sponsored Content
Top Forums Shell Programming and Scripting Perl script to find where functions is called in c Post 302483553 by DGPickett on Monday 27th of December 2010 04:43:15 PM
Old 12-27-2010
Well, I use cscope, which is free. You need a state engine to parse C states, but you are only interested in locating calls and subroutines. You have to handle every C meta-character and expression correctly, so you know when you are in comments and quotations. Just assign the states numbers in an int or enum as you discover them. Beware advanced things like "XXX"\n"YYY" ( = "XXXYYY"), and \ at end of line! When you find a variable name, you need to decide if it is a call or a subroutine declaration or a non-subroutine declaration like int i. You have to worry about type names in typedefs and #defines, possibly in includes, so you must preprocess with cpp or cc -E and process the structured comments in that output that show where include file lines are. So easy, almost like writing a compiler!
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to determine if a script (perl) was called from a CRON job or commandline

Hi, Is there a way to determine if a Script is called from a CRON job or from a commandline Gerry. (2 Replies)
Discussion started by: jerryMcguire
2 Replies

2. Shell Programming and Scripting

perl problem - why isn't 'die' being called?

last week i started learning perl, so have limited skill and knowledge. why isn't 'die' being called and the script exiting before the 'directory created' line? if (! -d "$logdir") { system "mkdir -p $logdir" || die print "\nERROR: release log directory creation failed - $logdir: $!\n";... (4 Replies)
Discussion started by: mjays
4 Replies

3. Shell Programming and Scripting

perl functions and arrays

Hi, First I will tell my objective of this function (function one). I have a table for ex: id passwd name -- ------ ----- 1 fdhgfs werwer 2 fsdfs sdfsdf 3 sdfs sdfsdf 4 fdsfs dssdf . . . . . . The id, passwd and name are the arguments for another function say two. (1 Reply)
Discussion started by: mercuryshipzz
1 Replies

4. UNIX for Dummies Questions & Answers

finding called functions recursively

I want to write a shell script which traverses a cpp file. Suppose there is function fncn_name6 .. which is called by fncn_name5 which in turn called by fncn_name4 and so on .. in a single cpp class. ie fncn_name1 { fncn_name2 { fncn_name3 } { fncn_name4 } } so fncn_name1 is... (2 Replies)
Discussion started by: ultimatix
2 Replies

5. UNIX for Dummies Questions & Answers

Please help me to find the functions for description

i have taken a screen shot of the question. http://www.magicscreenshot.com/MagicScreenshot/REAdbT956kE.png Please some one help me.:) (1 Reply)
Discussion started by: kjamsheed
1 Replies

6. Programming

Can perl get a pagename when called from iframe?

how? there is html-page with: <iframe> <!--#exec cgi="perl-script"--> </iframe> so in that perl-script need to delegate the name of html-page why? too lazy for ajax (3 Replies)
Discussion started by: tip78
3 Replies

7. Shell Programming and Scripting

Script will keep checking running status of another script and also restart called script at night

I am using blow script :-- #!/bin/bash FIND=$(ps -elf | grep "snmp_trap.sh" | grep -v grep) #check snmp_trap.sh is running or not if then # echo "process found" exit 0; else echo "process not found" exec /home/Ketan_r /snmp_trap.sh 2>&1 & disown -h ... (1 Reply)
Discussion started by: ketanraut
1 Replies

8. Programming

Perl: How to load some functions automaticaly, starting Perl inteructively (with -d -e 0)?

I would like to use Perl in 'interactive' mode (kind off), starting it by > perl -d -e 0; But I need to have some function be read on loading. Also, it should not be for anyone who starting Perl or use it any how. I did try to search, but not much result. I have try a file '.perldb':... (1 Reply)
Discussion started by: alex_5161
1 Replies

9. Shell Programming and Scripting

Mkdir fails when defined and called with functions.

In the below script i found that the alias mkdir_s is getting invoked from function configure() i.e the alias is kicking in. #!/bin/bash -e shopt -s expand_aliases alias mkdir=mkdir_s mkdir_s(){ if ]; then return else /usr/bin/mkdir "$1" return fi } configure() { mkdir -p... (9 Replies)
Discussion started by: mohtashims
9 Replies

10. UNIX for Beginners Questions & Answers

How to find C programming functions using shell script?

I want to find c function definition with pattern with shell script by checking condition for each line: data_type functionname(param_list){ .... } I knew cscope or ctag is usable for this task, but if there any ways to do without using them. I am thinking of checking line condition... (3 Replies)
Discussion started by: cmdcmd
3 Replies
CG(1)																	     CG(1)

NAME
cg - Recursively grep for a pattern and store it. SYNOPSIS
cg [ -l ] | [ [ -i ] pattern [ files ] ] DESCRIPTION
cg does a search though text files (usually source code) recursively for a pattern, storing matches and displaying the output in a human- readable fashion. It is intended to give some of the functionaly of AT&T's cscope(1) tool, with the advantages of simplicity and not being language-specific. The script will colorize output if configured as such. It is typically run with a Perl regular expression to search for. The search can be made case insensitive by using the -i option. A list of files may also be specified with an additional argument after the pattern. Put the files pattern in quotes to make it be matched by Perl rather than by the shell. Running the script with no arguments will recall the results of the previous search. After the search, entries found can be edited using the vg(1) script. The -l option shows the last log made. SOME EXAMPLES
cg - alone recalls the previous search results. cg -i pattern - search the default list of files for all files matching the pattern (and case-insensitively). cg pattern '*.c' - search recursively for pattern in all *.c files. This automatically converts '*' to '.*' and '.' to '.' for you and does a Perl pattern match on all files in the tree. cg pattern *.c - search through the shell-expanded list of *.c files, so not done recursively (in other words, only the files your shell pass to the script as arguments). cg -l - show the last log made. COMMAND-LINE OPTIONS -i Do a case-insensitive search. -l Show the last log made. -p Toggle the default pager option. cg has a bulit-in pager function, which can be enabled or disabled by default (in .cgvgrc). If the default is enabled, this option disables the pager; if the default is disabled, this option enables it. -P Force the built-in pager to be disabled. FILES
${HOME}/.cglast Log file of the last search. ${HOME}/.cgvgrc Per-user configuration file (if the defaults are not desireable). ${HOME}/.cgvg/* Log files in $HOSTNAME.shell_pid form with the log of the last search. SEE ALSO
vg(1), perl(1), find(1), grep(1), cscope(1) AUTHOR
cg was written by Joshua Uziel <uzi@uzix.org>. 13 Mar 2002 CG(1)
All times are GMT -4. The time now is 06:30 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy