#!/bin/sh
#AUTHOR: bones7456 (bones7456<at>gmail<dot>com)
#License: GPL
#e-file is like apt-file in debian,it's used to search package name via filename for gentoo
#thanks for portagefilelist.de and Daniel
VERSION=20110906

printhelp(){
cat <<EOF
This is e-file ($VERSION)
	Usage: `basename $0` filename
EOF
}
if [ $# -ne 1 ];then
	printhelp
	exit 1
fi

if type emerge >/dev/null 2>&1; then
	isgentoo=1
else
	isgentoo=0
	echo 'WARNING: "emerge" no found. If your system is not gentoo, a part of function will not available!' >&2
fi

URL="http://www.portagefilelist.de/index.php/Special:PFLQuery2?file=$1&searchfile=lookup&lookup=file&txt"

curl -s $URL | awk -v isgentoo=$isgentoo '
BEGIN{
	FOUND=0
	if(isgentoo){
		"emerge --info | grep PORTDIR" | getline
		split($0,PORTDIR,/\"/)
	}
}
{
	if(NR!=1 && NF!=0){
		T=1
		split(vers[$1 "/" $2],vers_arr,/ /)
		for(i in vers_arr){
			if(vers_arr[i]==$NF){
				T=0
				break
			}
		}
		if(T)vers[$1 "/" $2]=$NF " " vers[$1 "/" $2]
		T=1
		split(files[$1 "/" $2],files_arr,/; /)
		for(i in files_arr){
			if(files_arr[i]==($3 "/" $4)){
				T=0
				break
			}
		}
		if(T)files[$1 "/" $2]=$3 "/" $4 "; " files[$1 "/" $2]
		FOUND=1
	}
}
END{
	if(FOUND){
		for(pkg in vers){
			split(pkg,ii,/\//)
			if(isgentoo){
				NF=0
				cmd="ls -tgGd --time-style=+%c /var/db/pkg/" pkg "* 2>/dev/null"
				cmd | getline
				if(NF==0){
					installed=0
				}else{
					installed=1
					install_time=""
					for(i=4;i<NF;i++)install_time=install_time " " $i
					install_time=substr(install_time,2)
					split($NF,install_arr,pkg "-")
				}
			
				NF=0
				cmd="(grep -h HOMEPAGE\\= " PORTDIR[2] "/" pkg "/*.ebuild | tail -n 1)2>/dev/null"
				cmd | getline
				if(NF==0){
					HOMEPAGE=""
				}else{
					split($0,tempArr,/\"/)
					HOMEPAGE=tempArr[2]
				}
				
				NF=0
				cmd="(grep -h DESCRIPTION " PORTDIR[2] "/" pkg "/*.ebuild | tail -n 1)2>/dev/null"
				cmd | getline
				if(NF==0){
					DESCRIPTION=""
				}else{
					split($0,tempArr,/\"/)
					DESCRIPTION=tempArr[2]
				}
			}else{
				installed=0
				HOMEPAGE=""
				DESCRIPTION=""
			}

			setcolor(1,32)
			if(installed){
				printf("[I] ")
			}else{
				printf(" *  ")
			}
			clearcolor()
			printf("%s/",ii[1])
			setcolor(1,29)
			printf("%s\n",ii[2])
			setcolor(0,32)
			printf("\tAvailable Versions:\t%s\n",vers[pkg])
			if(installed){
				printf("\tLast Installed Ver:\t")
				setcolor(7,34)
				printf("%s",install_arr[2])
				setcolor(0,35)
				printf("(%s)\n",install_time)
				setcolor(0,32)
			}
			if(HOMEPAGE){
				printf("\tHomepage:\t\t")
				clearcolor()
				printf("%s\n",HOMEPAGE)
				setcolor(0,32)
			}
			if(DESCRIPTION){
				printf("\tDescription:\t\t")
				clearcolor()
				printf("%s\n",DESCRIPTION)
				setcolor(0,32)
			}
			printf("\tMatched Files:\t\t")
			clearcolor()
			printf("%s\n\n",files[pkg])
		}
	}else{
		print "No matches found."
	}
}
function setcolor(a,b){
	printf("%c[%d;%dm",27,a,b)
}
function clearcolor(){
	printf("%c[0m",27)
}
'