#!/usr/bin/perl

use Switch;
use Text::Wrap;

my $what=$ARGV[0];

$user="username"; #username for gmail account
$pass="password"; #password for gmail account
$file="/root/.gmail/gmail.html"; #temporary file to store gmail

#wrap format for subject
$Text::Wrap::columns=65; #Number of columns to wrap subject at
$initial_tab=""; #Tab for first line of subject
$subsequent_tab="\t"; #tab for wrapped lines
$quote="\""; #put quotes around subject

#limit the number of emails to be displayed
$emails=4; #if -1 display all emails

&passwd; #give password the proper url character encoding

switch($what){ #determine what the user wants
	case "n" {&gmail; print "$new\n";} #print number of new emails
	case "s" { #print $from and $subj for new email
		&gmail;
		my $size=@from;
		if ($emailss!=-1 && $size>$emails){$size=$emailss;} #limit number of emails displayed
		for(my $i=0; $i<$size; ++$i){
			print "From: $from[$i]\n"; #print from line
			$text=$quote.$subj[$i].$quote."\n";
			print wrap($initial_tab, $subsequent_tab, $text); #print subject with word wrap
		}
		print "\n";
		$size=@from;
		if ($emailss!=-1 && $size >$emails){print "$emails out of $size new emails displayed\n";}
	} 	
	case "e" { #print number of new emails, $from, and $subj
		&gmail;
		if($new==0){print "You have no new emails.\n";}
		else{
			print "You have $new new email(s).\n";
			my $size=@from;
			if ($emailss!=-1 && $size>$emails){$size=$emailss;} #limit number of emails displayed
			for(my $i=0; $i<$size; ++$i){
				print "From: $from[$i]\n"; #print from line
				$text=$quote.$subj[$i].$quote;
				print wrap($initial_tab, $subsequent_tab, $text); #print subject with word wrap
			}
			print "\n";
			$size=@from;
			if ($emailss!=-1 && $size >$emails){print "$emails out of $size new emails displayed\n";}
		}
	}
	else {
		print "Usage Error: gmail.pl <option>
\tn displays number of new emails
\ts displays from line and subject line for each new email.
\te displays the number of new emails and from line plus \n\t\tsubject line for each new email.\n";
	} #didn't give proper option
}

sub gmail{
	if(!(-e $file)){ #create file if it does not exists
		`touch $file`;
	} 

	#get new emails
	`wget -O - https://$user:$pass\@mail.google.com/mail/feed/atom --no-check-certificate> $file`;

	open(IN, $file); #open $file

	my $i=0; #initialize count
	$new=0; #initialize new emails to 0

	my $flag=0;

	while(<IN>){ #cycle through $file
		if(/<entry>/){$flag=1;}
		elsif(/<fullcount>(\d+)<\/fullcount>/){$new=$1;} #grab number of new emails
		elsif($flag==1){ 
			if(/<title>.+<\/title>/){push(@subj, &msg);} #grab new email titles
			elsif(/<name>(.+)<\/name>/){push(@from, $1);} #grab new email from lines
		}
	}

	close(IN); #close $file
}

sub passwd{ #change to url escape codes in password
	#URL ESCAPE CODES
	$_=$pass;
	s/\%/\%25/g;
	s/\#/\%23/g;
	s/\$/\%24/g;
	s/\&/\%26/g;
	s/\//\%2F/g;
	s/\:/\%3A/g;
	s/\;/\%3B/g;
	s/\</\%3C/g;
	s/\=/\%3D/g;
	s/\>/\%3E/g;
	s/\?/\%3F/g;
	s/\@/\%40/g;
	s/\[/\%5B/g;
	s/\\/\%5C/g;
	s/\]/\%5D/g;
	s/\^/\%5E/g;
	s/\`/\%60/g;
	s/\{/\%7B/g;
	s/\|/\%7C/g;
	s/\}/\%7D/g;
	s/\~/\%7E/g;
	$pass=$_;
}

sub msg{
	#THE HTML CODED CHARACTER SET [ISO-8859-1]
	chomp; s/<title>(.+)<\/title>/$1/; #get just the subject
	#now replace any special characters
	s/\&\#33\;/!/g;        #Exclamation mark
	s/\&\#34\;/"/g; s/\&quot\;/"/g;      #Quotation mark
	s/\&\#35\;/#/g;        #Number sign
	s/\&\#36\;/\$/g;        #Dollar sign
	s/\&\#37\;/%/g;        #Percent sign
	s/\&\#38\;/&/g; s/\&amp\;/&/g;        #Ampersand
	s/\&\#39\;/'/g;        #Apostrophe
	s/\&\#40\;/(/g;        #Left parenthesis
	s/\&\#41\;/)/g;        #Right parenthesis
	s/\&\#42\;/*/g;        #Asterisk
	s/\&\#43\;/+/g;        #Plus sign
	s/\&\#44\;/,/g;        #Comma
	s/\&\#45\;/-/g;        #Hyphen
	s/\&\#46\;/./g;        #Period (fullstop)
	s/\&\#47\;/\//g;        #Solidus (slash)
	s/\&\#58\;/:/g;        #Colon
	s/\&\#59\;/\;/g;        #Semi-colon
	s/\&\#60\;/</g; s/\&lt\;/</g;        #Less than
	s/\&\#61\;/=/g;        #Equals sign
	s/\&\#62\;/>/g; s/\&gt\;/>/g;        #Greater than
	s/\&\#63\;/\?/g;        #Question mark
	s/\&\#64\;/\@/g;        #Commercial at
	s/\&\#91\;/\[/g;        #Left square bracket
	s/\&\#92\;/\\/g;        #Reverse solidus (backslash)
	s/\&\#93\;/\]/g;        #Right square bracket
	s/\&\#94\;/\^/g;        #Caret
	s/\&\#95\;/_/g;        #Horizontal bar (underscore)
	s/\&\#96\;/\`/g;        #Acute accent
	s/\&\#123\;/\{/g;        #Left curly brace
	s/\&\#124\;/|/g;        #Vertical bar
	s/\&\#125\;/\}/g;        #Right curly brace
	s/\&\#126\;/~/g;        #Tilde
	s/\&\#161\;/¡/g;        #Inverted exclamation
	s/\&\#162\;/¢/g;        #Cent sign
	s/\&\#163\;/£/g;        #Pound sterling
	s/\&\#164\;/¤/g;        #General currency sign
	s/\&\#165\;/¥/g;        #Yen sign
	s/\&\#166\;/¦/g;        #Broken vertical bar
	s/\&\#167\;/§/g;        #Section sign
	s/\&\#168\;/¨/g;        #Umlaut (dieresis)
	s/\&\#169\;/©/g; s/\&copy\;/©/g;        #Copyright
	s/\&\#170\;/ª/g;        #Feminine ordinal
	s/\&\#171\;/«/g;        #Left angle quote, guillemotleft
	s/\&\#172\;/¬/g;        #Not sign
	s/\&\#174\;/®/g;        #Registered trademark
	s/\&\#175\;/¯/g;        #Macron accent
	s/\&\#176\;/°/g;        #Degree sign
	s/\&\#177\;/±/g;        #Plus or minus
	s/\&\#178\;/²/g;        #Superscript two
	s/\&\#179\;/³/g;        #Superscript three
	s/\&\#180\;/´/g;        #Acute accent
	s/\&\#181\;/µ/g;        #Micro sign
	s/\&\#182\;/¶/g;        #Paragraph sign
	s/\&\#183\;/·/g;        #Middle dot
	s/\&\#184\;/¸/g;        #Cedilla
	s/\&\#185\;/¹/g;        #Superscript one
	s/\&\#186\;/º/g;        #Masculine ordinal
	s/\&\#187\;/»/g;        #Right angle quote, guillemotright
	s/\&\#188\;/¼/g; s/\&frac14\;/¼/g;       # Fraction one-fourth
	s/\&\#189\;/½/g; s/\&frac12\;/½/g;       # Fraction one-half
	s/\&\#190\;/¾/g; s/\&frac34\;/¾/g;       # Fraction three-fourths
	s/\&\#191\;/¿/g;        #Inverted question mark
	s/\&\#192\;/À/g;        #Capital A, grave accent
	s/\&\#193\;/Á/g;        #Capital A, acute accent
	s/\&\#194\;/Â/g;        #Capital A, circumflex accent
	s/\&\#195\;/Ã/g;        #Capital A, tilde
	s/\&\#196\;/Ä/g;        #Capital A, dieresis or umlaut mark
	s/\&\#197\;/Å/g;        #Capital A, ring
	s/\&\#198\;/Æ/g;        #Capital AE dipthong (ligature)
	s/\&\#199\;/Ç/g;        #Capital C, cedilla
	s/\&\#200\;/È/g;        #Capital E, grave accent
	s/\&\#201\;/É/g;        #Capital E, acute accent
	s/\&\#202\;/Ê/g;        #Capital E, circumflex accent
	s/\&\#203\;/Ë/g;        #Capital E, dieresis or umlaut mark
	s/\&\#204\;/Ì/g;        #Capital I, grave accent
	s/\&\#205\;/Í/g;        #Capital I, acute accent
	s/\&\#206\;/Î/g;        #Capital I, circumflex accent
	s/\&\#207\;/Ï/g;        #Capital I, dieresis or umlaut mark   
	s/\&\#208\;/Ð/g;        #Capital Eth, Icelandic
	s/\&\#209\;/Ñ/g;        #Capital N, tilde
	s/\&\#210\;/Ò/g;        #Capital O, grave accent
	s/\&\#211\;/Ó/g;        #Capital O, acute accent
	s/\&\#212\;/Ô/g;        #Capital O, circumflex accent
	s/\&\#213\;/Õ/g;        #Capital O, tilde
	s/\&\#214\;/Ö/g;        #Capital O, dieresis or umlaut mark
	s/\&\#215\;/×/g;        #Multiply sign
	s/\&\#216\;/Ø/g;        #Capital O, slash
	s/\&\#217\;/Ù/g;        #Capital U, grave accent
	s/\&\#218\;/Ú/g;        #Capital U, acute accent
	s/\&\#219\;/Û/g;        #Capital U, circumflex accent
	s/\&\#220\;/Ü/g;        #Capital U, dieresis or umlaut mark
	s/\&\#221\;/Ý/g;        #Capital Y, acute accent
	s/\&\#222\;/Þ/g;        #Capital THORN, Icelandic
	s/\&\#223\;/ß/g;        #Small sharp s, German (sz ligature)
	s/\&\#224\;/à/g;        #Small a, grave accent
	s/\&\#225\;/á/g;        #Small a, acute accent
	s/\&\#226\;/â/g;        #Small a, circumflex accent
	s/\&\#227\;/ã/g;        #Small a, tilde
	s/\&\#228\;/ä/g;        #Small a, dieresis or umlaut mark
	s/\&\#229\;/å/g;        #Small a, ring
	s/\&\#230\;/æ/g;        #Small ae dipthong (ligature)
	s/\&\#231\;/ç/g;        #Small c, cedilla
	s/\&\#232\;/è/g;        #Small e, grave accent
	s/\&\#233\;/é/g;        #Small e, acute accent
	s/\&\#234\;/ê/g;        #Small e, circumflex accent
	s/\&\#235\;/ë/g;        #Small e, dieresis or umlaut mark
	s/\&\#236\;/ì/g;        #Small i, grave accent
	s/\&\#237\;/í/g;        #Small i, acute accent
	s/\&\#238\;/î/g;        #Small i, circumflex accent
	s/\&\#239\;/ï/g;        #Small i, dieresis or umlaut mark
	s/\&\#240\;/ð/g;        #Small eth, Icelandic
	s/\&\#241\;/ñ/g;        #Small n, tilde
	s/\&\#242\;/ò/g;        #Small o, grave accent
	s/\&\#243\;/ó/g;        #Small o, acute accent
	s/\&\#244\;/ô/g;        #Small o, circumflex accent
	s/\&\#245\;/õ/g;        #Small o, tilde
	s/\&\#246\;/ö/g;        #Small o, dieresis or umlaut mark
	s/\&\#247\;/÷/g;        #Division sign
	s/\&\#248\;/ø/g;        #Small o, slash
	s/\&\#249\;/ù/g;        #Small u, grave accent
	s/\&\#250\;/ú/g;        #Small u, acute accent
	s/\&\#251\;/û/g;        #Small u, circumflex accent
	s/\&\#252\;/ü/g;        #Small u, dieresis or umlaut mark
	s/\&\#253\;/ý/g;        #Small y, acute accent
	s/\&\#254\;/þ/g;        #Small thorn, Icelandic
	s/\&\#255\;/ÿ/g;        #Small y, dieresis or umlaut mark
	s/^\s+//;
	return $_;
}