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#!/usr/bin/perl
#########################################################################
#
# The Contents of this file are made available subject to the terms of
# the Sun Industry Standards Source License Version 1.2
#
# Sun Microsystems Inc., March, 2001
#
#
# Sun Industry Standards Source License Version 1.2
# =================================================
# The contents of this file are subject to the Sun Industry Standards
# Source License Version 1.2 (the "License"); You may not use this file
# except in compliance with the License. You may obtain a copy of the
# License at http://gridengine.sunsource.net/Gridengine_SISSL_license.html
#
# Software provided under this License is provided on an "AS IS" basis,
# WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
# WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
# MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
# See the License for the specific provisions governing your rights and
# obligations concerning the Software.
#
# The Initial Developer of the Original Code is: Sun Microsystems, Inc.
#
# Copyright: 2001 by Sun Microsystems, Inc.
#
# All Rights Reserved.
#
#########################################################################
#
# This script recursively searches all .c files under the current
# directory for uses of setenv() or getenv(). Whenever such a function
# call is found, an attempt is made to determine the environment variable
# used. If the argument to the function call matches the pattern
# "[A-Z0-9_]+", the argument is assumed to be an env var. If the argument
# matches the pattern [A-Z0-9_]+, the argument is assumed to be a macro.
# The script will then recursively search all .c and .h files under the
# current directory for a macro definition. If the -a switch is given,
# anything not matching either of the above patterns is assumed to be a
# variable expression and is not resolved any further. If the -g switch is
# given, only getenv() calls are included. If the -s switch is given, only
# setenv() calls are included.
# The output of this script is a list of the names of the env vars found,
# one per line, followed the names of the files in which they where found,
# indented and one per line. In the case of macros, the name takes the
# form:
# macro(resolved_value)
# In the case of variable expressions, the name takes the form:
# (variable_expression)
#
# Syntax:
# Usage: extract_env_vars.pl [-a] [-g|-s]
#
#########################################################################
my %list, %macros, $do_all, $do_gets, $do_sets, $arg;
sub usage {
print "Usage: extract_env_vars.pl [-a] [-g|-s]\n";
exit (1);
}
sub help {
print "extract_env_vars.pl [-a] [-g|-s]\n";
print "\t-a\tinclude variable expressions\n";
print "\t-g\tinclude only getenv() calls\n";
print "\t-s\tinclude only setenv() calls\n";
exit (0);
}
$do_all = 0;
$do_gets = 1;
$do_sets = 1;
while (@ARGV > 0) {
$arg = shift (@ARGV);
if ($arg eq "-help") {
help();
}
elsif ($arg eq "-a") {
$do_all = 1;
}
elsif ($arg eq "-s") {
$do_sets = 1;
$do_gets = 0;
}
elsif ($arg eq "-g") {
$do_gets = 1;
$do_sets = 0;
}
else {
usage ();
}
}
open (GREP, '/usr/bin/csh -c "/usr/bin/grep etenv {*.c,*/*.c,*/*/*.c,*/*/*/*.c}" |');
my $file;
while (<GREP>) {
if (/^(.+?):.*(sge_|[^a-zA-Z_])([gs])etenv\s*\(\s*(.+?)\s*\)/) {
$file = $1;
$arg = $4;
# print "$3: $4 in $1\n";
if ($do_gets && ($3 eq "g")) {
# With quotes is an env var.
if ($arg =~ /^"([A-Z0-9_]+)"$/) {
push (@{$list{$1}}, $file);
}
# Without quotes is a macro.
elsif ($arg =~ /^([A-Z0-9_]+)$/) {
push (@{$macros{$1}}, $file);
}
# Lower case is a variable expression.
elsif ($do_all) {
if (index ($arg, "(") != -1) {
$arg = "$arg)";
}
push (@{$list{"($arg)"}}, $file);
}
}
elsif ($do_sets && ($3 eq "s")) {
# With quotes is an env var.
if ($arg =~ /^"([A-Z0-9_]+?)"\s*,.+$/) {
push (@{$list{$1}}, $file);
}
# Without quotes is a macro.
elsif ($arg =~ /^([A-Z0-9_]+?)\s*,.+$/) {
push (@{$macros{$1}}, $file);
}
# Lower case is a variable expression.
elsif ($do_all && ($arg =~ /^(.+)\s*,.+$/)) {
$arg = $1;
if (index ($arg, "(") != -1) {
$arg = "$arg)";
}
push (@{$list{"($arg)"}}, $file);
}
}
}
}
close GREP;
#exit;
my $var, $found;
# Resolve macros
foreach $var (keys (%macros)) {
open (GREP, "/usr/bin/csh -c \"/usr/bin/grep $var {*.c,*/*.c,*/*/*.c,*/*/*/*.c,*.h,*/*.h,*/*/*.h,*/*/*/*.h} | /usr/bin/grep #define\" |");
$found = 0;
while (<GREP>) {
if (/#define\s+"?$var"?\s+(.*?\S)\s*(\/\*|\r?\n)/) {
push (@{$list{"$var($1)"}}, @{$macros{$var}});
$found = 1;
}
}
close GREP;
if (!$found) {
push (@{$list{"$var(?)"}}, @{$macros{$var}});;
}
}
my $file, $last_file;
foreach $var (sort (keys (%list))) {
print "$var:\n";
$last_file = "";
foreach $file (sort (@{$list{$var}})) {
if ($file ne $last_file) {
print " $file\n";
$last_file = $file;
}
}
}
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