cabal替代脚本

由于网络原因，直接使用cabal update不成功，只能自己写脚本直接从网上拖包下来，自己安装。

但是这样做的缺点是需要手动处理dependency，当然，也可以把脚本写的复杂些，自动来处理dependency。

cabal.sh

1 cat<<EOF > .tmp_sed_script
2 s/<\/[^>]*>/&\n/g
3 s/></>\n</g
4 s/a href="\([^"]*\)"/\n[URL: \1 ]\n/g
5 EOF
6
7 home_url="https://hackage.haskell.org"
8
9 item_url=$home_url/"package/"$1
10
11 target_dir=""
12
13 curl $item_url 1> .tmp_page_content 2> /dev/null
14
15 for link in $(sed -f .tmp_sed_script .tmp_page_content | grep URL | awk ‘{print $2}‘)
16 do
17 if [[ $link == /*.tar.gz ]]
18 then
19 full_link=$home_url$link
20 echo "wget " $full_link " --no-check-certificate ......"
21 wget $full_link --no-check-certificate
22 archive_file=$(basename $full_link)
23 if [ -f $archive_file ]
24 then
25 tar -xvzf $archive_file 2>&1 > /dev/null
26 fi
27 target_dir=$(tar tzf $archive_file | awk ‘NR==1{print}‘)
28 fi
29 done
30
31 rm .tmp_*
32 rm *.tar.gz*
33
34 cd $target_dir
35 sudo cabal configure
36 sudo cabal install
37 cd ..

ghc-pkg list | sed -e ‘/[\/(]/d‘ | awk ‘BEGIN{FS="-"}{print $1}‘ | sed -e ‘/Cabal/d‘ | awk ‘NF!=0{print}‘ | sed ‘s/ //g‘ > .installed_pkgs

if [ ! -f .tmp_sed_script ]
then
cat<<EOF > .tmp_sed_script
s/<\/[^>]*>/&\n/g
s/></>\n</g
s/a href="\([^"]*\)"/\n[URL: \1 ]\n/g
EOF
fi

if [ ! -f .tmp_installed_pkgs ]
then
ghc-pkg list | sed -e ‘/[\/(]/d‘ | awk ‘BEGIN{FS="-"}{print $1}‘ | sed -e ‘/Cabal/d‘ | awk ‘NF!=0{print}‘ | sed ‘s/ //g‘ > .tmp_installed_pkgs
fi

home_url="https://hackage.haskell.org"

item_url=$home_url/"package/"$1

target_dir=""

if [ ! -f $.tmp_page_content_"$1" ]
then
curl $item_url 1> .tmp_page_content_"$1" 2> /dev/null
fi

sed -f .tmp_sed_script .tmp_page_content_"$1" | grep "URL: /package/" | sed -e "/$1/d" > .tmp_dependency_"$1"

# we should make sure that all the package in .tmp_dependency_XXX file should be installed first than this package
#
#

for dependency in $(cat .tmp_dependency_"$1")
do
	if [[ $dependency == /package/* ]]
	then
		#echo $dependency
		dep=$(echo $dependency | cut -b 10-)
		b_installed=false
		for installed in $(cat .tmp_installed_pkgs)
		do
			if [[ $installed == $dep ]]
			then
				b_installed=true
			fi
		done
		#echo $b_installed " for " $dep

		if [[ $b_installed == "false" ]]
		then
			echo "$1 depends on $dep"
			echo "$dep" >> .tmp_installed_pkgs
			bash cabal_ex.sh $dep
		fi
	fi
done

但是这种以脚本为单位的recursion效率又有点问题，所以最好将其写成一个函数。

cabal替代脚本