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#!/usr/bin/perl -w
# python_count - count physical lines of code in Python programs.
# Usage: python_count [-f file] [list_of_files]
# file: file with a list of files to count (if "-", read list from stdin)
# list_of_files: list of files to count
# -f file or list_of_files can be used, or both
# This is a trivial/naive program.
# Comments begin with "#".
# Python supports multi-line strings using """, which matches another """.
# When not inside a multi-line string, a line whose first non-whitespace
# is """ almost always indicates a programming comment;
# this is also true for lines beginning with '"'
# This means that a string which is part of an expression but which begins
# a new line won't be counted; this problem is rare in practice.
# This code DOES count _data_ inside a triple-quote (that's not a comment).
# Note that this isn't true for single-quote, which is used in case
# statements (etc.) but not in this context.
# This is part of SLOCCount, a toolsuite that counts
# source lines of code (SLOC).
# Copyright (C) 2001-2004 David A. Wheeler.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# To contact David A. Wheeler, see his website at:
# http://www.dwheeler.com.
#
#
$total_sloc = 0;
# Do we have "-f" (read list of files from second argument)?
if (($#ARGV >= 1) && ($ARGV[0] eq "-f")) {
# Yes, we have -f
if ($ARGV[1] eq "-") {
# The list of files is in STDIN
while (<STDIN>) {
chomp ($_);
&count_file ($_);
}
} else {
# The list of files is in the file $ARGV[1]
open (FILEWITHLIST, $ARGV[1]) || die "Error: Could not open $ARGV[1]\n";
while (<FILEWITHLIST>) {
chomp ($_);
&count_file ($_);
}
close FILEWITHLIST;
}
shift @ARGV; shift @ARGV;
}
# Process all (remaining) arguments as file names
while ($file = shift @ARGV) {
&count_file ($file);
}
print "Total:\n";
print "$total_sloc\n";
sub count_file {
my ($file) = @_;
my $sloc = 0;
my $isintriple = 0; # A triple-quote is in effect.
my $isincomment = 0; # We are in a multiline (triple-quoted) comment.
open (FILE, $file);
while (<FILE>) {
if (! $isintriple) { # Normal case:
s/""".*"""//; # Delete triple-quotes that begin & end on the line.
s/^\s*"([^"]|(\\"))+"//; # Delete lonely strings starting on BOL.
s/#.*//; # Delete "#" comments.
if (m/"""/) { # Does a multiline triple-quote begin here?
$isintriple = 1;
if (m/^\s*"""/) {$isincomment = 1;} # It's a comment if at BOL.
}
} else { # we ARE in a triple.
if (m/"""/) {
if ($isincomment) {
s/.*?"""//; # Delete string text if it's a comment (not if data)
} else {
s/.*?"""/x/; # Leave something there to count.
}
# But wait! Another triple might start on this line!
# (see Python-1.5.2/Tools/freeze/makefreeze.py for an example)
if (m/"""/) {
# It did! No change in state!
} else {
$isintriple = 0;
$isincomment = 0;
}
}
}
# TO DEBUG:
# print "cmmnt=${isincomment} trp=${isintriple}: $_\n";
if ( (!$isincomment) && m/\S/) {$sloc++;};
}
print "$sloc $file\n";
$total_sloc += $sloc;
$sloc = 0;
if ($isintriple) {
print STDERR "No closing triple-doublequote-marks in file $file\n";
}
# Reset rest of state:
$isintriple = 0;
$isincomment = 0;
close (FILE); # Reset $. (line count) each time.
}
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