fetch_version

   1 #!/bin/bash
   2
   3 usage() {
   4   echo "$0 file.json"
   5   echo "$0 [-n|--name name] [-b|--branch branch_or_rev] [-f|--file out_file] [-h|--help] (-u|--url) url"
   6   exit
   7 }
   8
   9 branch="master"
  10 while [[ $# -gt 0 ]]; do
  11   a="$1"
  12   shift
  13   case "$a" in
  14     *.json)
  15       file=$a
  16       content=$(cat $a)
  17       name="$(echo "$content" | jq -r ".meta.name")"
  18       url="$(echo "$content" | jq -r ".meta.url")"
  19       branch="$(echo "$content" | jq -r ".meta.branch")"
  20       break
  21       ;;
  22     -n|--name)
  23       name=$1
  24       shift
  25       ;;
  26     -u|--url)
  27       url=$1
  28       shift
  29       ;;
  30     -b|--branch)
  31       branch=$1
  32       shift
  33       ;;
  34     -f|--file)
  35       file=$1
  36       shift
  37       ;;
  38     -h|--help)
  39       usage
  40       ;;
  41   esac
  42 done
  43 if [ -z "$url" ]; then
  44   usage
  45 fi
  46 if [ -z "$name" ]; then
  47   name=$(echo "$url" | cut -d"/" -f5)
  48 fi
  49 if [ -z "$file" ]; then
  50   file=$name.json
  51 fi
  52
  53 # function fetch_ledger () {
  54 #   pushd $HOME/projets/ledger >/dev/null 2>/dev/null
  55 #   git fetch origin
  56 #   tag="$(git describe origin/next | sed -e "s/^v//")"
  57 #   rev="$(git show-ref -s refs/remotes/origin/next)"
  58 #   sha="$(nix-prefetch-url --unpack file://<(git archive --format=tar.gz HEAD) 2>/dev/null)"
  59 #   popd >/dev/null 2>/dev/null
  60 # }
  61
  62 # awk_describe='BEGIN {
  63 #   FS = "[ /^]+"
  64 #   while ("git ls-remote " ARGV[1] "| sort -Vk2" | getline) {
  65 #     if (!sha)
  66 #       sha = substr($0, 1, 7)
  67 #     tag = $3
  68 #   }
  69 #   while ("curl -s " ARGV[1] "/releases/tag/" tag | getline)
  70 #     if ($3 ~ "commits")
  71 #       com = $2
  72 #   printf com ? "%s-%s-g%s\n" : "%s\n", tag, com, sha
  73 # }'
  74
  75 function get_ref () {
  76   case "$1" in
  77     refs/*)
  78       echo "$1"
  79       ;;
  80     *)
  81       echo "refs/heads/$1"
  82       ;;
  83   esac
  84 }
  85
  86 function get_name () {
  87   branch="$1"
  88   rev="$2"
  89   minirev=${rev:0:7}
  90
  91   case "$branch" in
  92     refs/tags/*)
  93       b="${branch#refs/tags/}"
  94       echo "${b//\//-}"
  95       ;;
  96     refs/heads/*)
  97       b=${branch#refs/heads/}
  98       echo "$minirev-${b//\//-}"
  99       ;;
 100     refs/*)
 101       b=${branch#refs/}
 102       echo "$minirev-${b//\//-}"
 103       ;;
 104     *)
 105       echo "$minirev-${branch//\//-}"
 106       ;;
 107   esac
 108 }
 109
 110 function fetch_github () {
 111   rev="$(git ls-remote --refs $url $(get_ref $branch) | head -n1 | cut -f1)"
 112   sha="$(nix-prefetch-url --unpack $url/archive/$rev.tar.gz)"
 113   # Différent du git-describe et github-spécifique
 114   #tag=$(echo "$awk_describe" | awk -f - $url | sed -e "s/^v//")
 115   tag=$(get_name $branch $rev)
 116 }
 117
 118 function fetch_other () {
 119   rev="$(git ls-remote --refs $url $(get_ref $branch) | head -n1 | cut -f1)"
 120   sha="$(nix-prefetch-git --url $url --rev $(get_ref $branch) | jq -r '.sha256')"
 121   tag=$(get_name $branch $rev)
 122 }
 123
 124 case "$url" in
 125   https://*github.com/*)
 126     fetch_github 2>/dev/null
 127     owner=$(echo "$url" | cut -d"/" -f4)
 128     repo=$(echo "$url" | cut -d"/" -f5)
 129
 130     F='{
 131       "tag": $tag,
 132       "meta": {
 133         "name": $name,
 134         "url": $url,
 135         "branch": $branch
 136       },
 137       "github": {
 138         "owner": $owner,
 139         "repo": $repo,
 140         "rev": $rev,
 141         "sha256": $sha,
 142         "fetchSubmodules": true
 143       }
 144     }'
 145     ;;
 146   *)
 147     fetch_other 2>/dev/null
 148     F='{
 149       "tag": $tag,
 150       "meta": {
 151         "name": $name,
 152         "url": $url,
 153         "branch": $branch
 154       },
 155       "git": {
 156         "url": $url,
 157         "rev": $rev,
 158         "sha256": $sha,
 159         "fetchSubmodules": true
 160       }
 161     }'
 162     ;;
 163 esac
 164
 165 jq -n \
 166   --arg name "$name" \
 167   --arg owner "$owner" \
 168   --arg repo "$repo" \
 169   --arg tag "$tag" \
 170   --arg rev "$rev" \
 171   --arg url "$url" \
 172   --arg branch "$branch" \
 173   --arg sha "$sha" \
 174   "$F" > $file