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Full Discussion: Parsing the Ruby File
Top Forums Shell Programming and Scripting Parsing the Ruby File Post 302484171 by thillai_selvan on Thursday 30th of December 2010 03:43:25 AM
Old 12-30-2010
Parsing the Ruby File
Hai any one pls guide me...
We can extract the line number of the sub routine/function/method in a Ruby file using the ctags command.

But I want to know the line number in which the sub routine is ending.

Example:

Quote:
#
# Function name : get_days_in_hash
# Argument :
# no arguments
# Return value :
# days information in hash format.
# Description :
# get the days. Assigned value for each day.
# 1 => 'Mon' ,
# 2 => 'Tues' ,
# 3 => 'Wed' ,
# 4 => 'Thu' ,
# 5 => 'Fri' ,
# 6 => 'Sat' ,
# 7 => 'Sun' ,
# 8 => 'Leave' ,
# 9 => 'Holiday'
# Logical flow :
# generate the hash
#
def get_days_in_hash
{ 1 => 'Mon' , 2 => 'Tues' , 3 => 'Wed' , 4 => 'Thu' , 5 => 'Fri' , 6 => 'Sat' , 7 => 'Sun' , 8 => 'Leave' , 9 => 'Holiday' }
end
Quote:
#
# Function name : user_filter
# Argument :
# get the controller and action.
# Return value :
# if the user not login then display the login page.
# Description :
# check the user is login or not.
# Logical flow :
# check the controller and action is not the login page or not.
# check the user is log-in or not.
# if not login then redirect the page to login page.
#
def user_filter()

# set the header information for the Browser
no_cache()

# check it is a login page or not.
# If it is not a not the login page then check the session whether he is login or not
# if is not login then display the login page.
if( not ( params[:controller] == 'main' && ( params[:action] == 'login' || params[:action] == 'index' ) ) )
if( not session[:user_id] )
#redirect_to :controller => 'main' , :action => 'login'
if( params[:action] == 'logout' )
flash[:notice] = 'Logged out Successfully'
else
flash[:notice] = "Session Expired"
end
render :text => "<script>
window.location='#{url_for(:controller => 'main' , :action => 'login' )}';
</script>"
end
end
end
Say the function get_days_in_hash starts in the line number 20.
It will be returned by the ctags command.
I want to know in which line number that appropriate function is ending.

For each functions in the file I want this informations like starting line of the file and the ending line of the file.

Please help me about how to achieve this.
Thanks in Advance,
 

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LEARN ABOUT POSIX

chsh

CHSH(1) 							   User Commands							   CHSH(1)

NAME

       chsh - change login shell

SYNOPSIS

       chsh [options] [LOGIN]

DESCRIPTION

       The chsh command changes the user login shell. This determines the name of the user's initial login command. A normal user may only change
       the login shell for her own account; the superuser may change the login shell for any account.

OPTIONS

       The options which apply to the chsh command are:

       -h, --help
	   Display help message and exit.

       -R, --root CHROOT_DIR
	   Apply changes in the CHROOT_DIR directory and use the configuration files from the CHROOT_DIR directory.

       -s, --shell SHELL
	   The name of the user's new login shell. Setting this field to blank causes the system to select the default login shell.

       If the -s option is not selected, chsh operates in an interactive fashion, prompting the user with the current login shell. Enter the new
       value to change the shell, or leave the line blank to use the current one. The current shell is displayed between a pair of [ ] marks.

NOTE

       The only restriction placed on the login shell is that the command name must be listed in /etc/shells, unless the invoker is the superuser,
       and then any value may be added. An account with a restricted login shell may not change her login shell. For this reason, placing /bin/rsh
       in /etc/shells is discouraged since accidentally changing to a restricted shell would prevent the user from ever changing her login shell
       back to its original value.

FILES

       /etc/passwd
	   User account information.

       /etc/shells
	   List of valid login shells.

       /etc/login.defs
	   Shadow password suite configuration.

SEE ALSO

       chfn(1), login.defs(5), passwd(5).

shadow-utils 4.5						    01/25/2018								   CHSH(1)
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