_webi/template.sh

   1 #!/bin/bash
   2
   3 {
   4
   5 set -e
   6 set -u
   7 #set -x
   8
   9 #WEBI_PKG=
  10 #WEBI_NAME=
  11 # TODO should this be BASEURL instead?
  12 #WEBI_HOST=
  13 #WEBI_RELEASES=
  14 #WEBI_CSV=
  15 #WEBI_TAG=
  16 #WEBI_VERSION=
  17 #WEBI_MAJOR=
  18 #WEBI_MINOR=
  19 #WEBI_PATCH=
  20 # TODO not sure if BUILD is the best name for this
  21 #WEBI_BUILD=
  22 #WEBI_LTS=
  23 #WEBI_CHANNEL=
  24 #WEBI_EXT=
  25 #WEBI_PKG_URL=
  26 #WEBI_PKG_FILE=
  27 WEBI_UA="$(uname -a)"
  28 export WEBI_HOST
  29
  30 ##
  31 ## Set up tmp, download, and install directories
  32 ##
  33
  34 WEBI_TMP=${WEBI_TMP:-"$(mktemp -d -t webinstall-${WEBI_PKG:-}.XXXXXXXX)"}
  35
  36 mkdir -p "$HOME/Downloads"
  37 mkdir -p "$HOME/.local/bin"
  38 mkdir -p "$HOME/.local/opt"
  39
  40 ##
  41 ## Detect http client
  42 ##
  43 set +e
  44 export WEBI_CURL="$(command -v curl)"
  45 export WEBI_WGET="$(command -v wget)"
  46 set -e
  47
  48 my_versioned_name=""
  49 _webi_canonical_name() {
  50     if [ -n "$my_versioned_name" ]; then
  51         echo "$my_versioned_name"
  52         return 0
  53     fi
  54
  55     if [ -n "$(command -v pkg_format_cmd_version)" ]; then
  56         my_versioned_name="$(pkg_format_cmd_version "$WEBI_VERSION")"
  57     else
  58         my_versioned_name="'$pkg_cmd_name' v$WEBI_VERSION"
  59     fi
  60
  61     echo "$my_versioned_name"
  62 }
  63
  64 webi_link() {
  65     if [ -n "$(command -v pkg_link)" ]; then
  66         pkg_link
  67         return 0
  68     fi
  69
  70     if [ -n "$WEBI_SINGLE" ] || [ "single" == "${1:-}" ]; then
  71         if [ -d "$pkg_dst_cmd" ]; then
  72             rm -rf -i "$pkg_dst_cmd"
  73         else
  74             rm -f "$pkg_dst_cmd"
  75         fi
  76         ln -s "$pkg_src_cmd" "$pkg_dst_cmd"
  77     else
  78         # 'pkg_dst' will default to $HOME/.local/opt/node
  79         # 'pkg_src' will be the installed version, such as to $HOME/.local/opt/node-v12.8.0
  80         if [ -d "$pkg_dst" ]; then
  81             rm -rf -i "$pkg_dst"
  82         else
  83             rm -f "$pkg_dst"
  84         fi
  85         ln -s "$pkg_src" "$pkg_dst"
  86     fi
  87 }
  88
  89 webi_check() {
  90     # Test for existing version
  91     set +e
  92     my_current_cmd="$(command -v "$pkg_cmd_name")"
  93     set -e
  94     if [ -n "$my_current_cmd" ]; then
  95         pkg_current_version="$(pkg_get_current_version 2>/dev/null | head -n 1)"
  96         # remove trailing '.0's for golang's sake
  97         my_current_version="$(echo $pkg_current_version | sed 's:\.0::g')"
  98         my_src_version="$(echo $WEBI_VERSION | sed 's:\.0::g')"
  99         my_canonical_name="$(_webi_canonical_name)"
 100         if [ "$my_src_version" == "$my_current_version" ]; then
 101             echo "$my_canonical_name already installed at $my_current_cmd"
 102             exit 0
 103         else
 104             if [ "$my_current_cmd" != "$pkg_dst_cmd" ]; then
 105                 echo "WARN: possible conflict between $my_canonical_name and $pkg_current_version at $my_current_cmd"
 106             fi
 107             if [ -x "$pkg_src_cmd" ]; then
 108                 webi_link
 109                 echo "switched to $my_canonical_name at $pkg_src"
 110                 exit 0
 111             fi
 112           fi
 113     fi
 114 }
 115
 116 webi_download() {
 117     if [ -n "${1:-}" ]; then
 118         my_url="$1"
 119     else
 120         if [ "error" == "$WEBI_CHANNEL" ]; then
 121             # TODO pass back requested OS / Arch / Version
 122             echo "Error: no '$WEBI_NAME' release found for the given OS and architecture by that tag or version"
 123             echo "       (check that the package name and version are correct)"
 124             exit 1
 125         fi
 126         my_url="$WEBI_PKG_URL"
 127     fi
 128     if [ -n "${2:-}" ]; then
 129         my_dl="$2"
 130     else
 131         my_dl="$HOME/Downloads/$WEBI_PKG_FILE"
 132     fi
 133
 134     if [ -e "$my_dl" ]; then
 135         echo "Found $my_dl"
 136         return 0
 137     fi
 138
 139     echo "Downloading $WEBI_NAME to $my_dl"
 140
 141     # It's only 2020, we can't expect to have reliable CLI tools
 142     # to tell us the size of a file as part of a base system...
 143     if [ -n "$WEBI_WGET" ]; then
 144         # wget has resumable downloads
 145         # TODO wget -c --content-disposition "$my_url"
 146         set +e
 147         wget -q --show-progress --user-agent="wget $WEBI_UA" -c "$my_url" -O "$my_dl.part"
 148         if ! [ $? -eq 0 ]; then
 149           echo "failed to download from $WEBI_PKG_URL"
 150           exit 1
 151         fi
 152         set -e
 153     else
 154         # Neither GNU nor BSD curl have sane resume download options, hence we don't bother
 155         # TODO curl -fsSL --remote-name --remote-header-name --write-out "$my_url"
 156         curl -fSL -H "User-Agent: curl $WEBI_UA" "$my_url" -o "$my_dl.part"
 157     fi
 158
 159     mv "$my_dl.part" "$my_dl"
 160 }
 161
 162 webi_extract() {
 163     pushd "$WEBI_TMP" 2>&1 >/dev/null
 164         if [ "tar" == "$WEBI_EXT" ]; then
 165             echo "Extracting $HOME/Downloads/$WEBI_PKG_FILE"
 166             tar xf "$HOME/Downloads/$WEBI_PKG_FILE"
 167         elif [ "zip" == "$WEBI_EXT" ]; then
 168             echo "Extracting $HOME/Downloads/$WEBI_PKG_FILE"
 169             unzip "$HOME/Downloads/$WEBI_PKG_FILE"
 170         elif [ "exe" == "$WEBI_EXT" ]; then
 171             # do nothing (but don't leave an empty if block either)
 172             echo -n ""
 173         elif [ "xz" == "$WEBI_EXT" ]; then
 174             echo "Inflating $HOME/Downloads/$WEBI_PKG_FILE"
 175             unxz -c "$HOME/Downloads/$WEBI_PKG_FILE" > $(basename "$WEBI_PKG_FILE")
 176         else
 177             # do nothing
 178             echo "Failed to extract $HOME/Downloads/$WEBI_PKG_FILE"
 179             exit 1
 180         fi
 181     popd 2>&1 >/dev/null
 182 }
 183
 184 webi_path_add() {
 185     # make sure that we don't recursively install pathman with webi
 186     my_path="$PATH"
 187     export PATH="$HOME/.local/bin:$PATH"
 188     set +e
 189     my_pathman=$(command -v pathman)
 190     set -e
 191     export PATH="$my_path"
 192
 193     # install pathman if not already installed
 194     if [ -z "$my_pathman" ]; then
 195         "$HOME/.local/bin/webi" pathman
 196         export PATH="$HOME/.local/bin:$PATH"
 197     fi
 198
 199     # in case pathman was recently installed and the PATH not updated
 200     "$HOME/.local/bin/pathman" add "$1"
 201 }
 202
 203 webi_pre_install() {
 204     webi_check
 205     webi_download
 206     webi_extract
 207 }
 208
 209 webi_install() {
 210     if [ -n "$WEBI_SINGLE" ] || [ "single" == "${1:-}" ]; then
 211         mkdir -p "$(dirname $pkg_src_cmd)"
 212         mv ./"$pkg_cmd_name"* "$pkg_src_cmd"
 213         chmod a+x "$pkg_src_cmd"
 214     else
 215         mkdir -p "$(dirname $pkg_src)"
 216         if [ -d "$pkg_src" ]; then
 217             rm -rf -i "$pkg_src"
 218         else
 219             rm -f "$pkg_src"
 220         fi
 221         mv ./"$pkg_cmd_name"* "$pkg_src"
 222     fi
 223 }
 224
 225 webi_post_install() {
 226     webi_path_add "$pkg_dst_bin"
 227 }
 228
 229 _webi_done_message() {
 230     echo "Installed $(_webi_canonical_name) as $pkg_dst_cmd"
 231 }
 232
 233 ##
 234 ##
 235 ## BEGIN user-submited script
 236 ##
 237 ##
 238
 239 WEBI_SINGLE=
 240
 241 {
 242
 243 {{ installer }}
 244
 245 }
 246
 247 ##
 248 ##
 249 ## END user-submitted script
 250 ##
 251 ##
 252
 253 if [ -n "$(command -v pkg_get_current_version)" ]; then
 254     pkg_cmd_name="${pkg_cmd_name:-$WEBI_NAME}"
 255
 256     if [ -n "$WEBI_SINGLE" ]; then
 257         pkg_dst_cmd="${pkg_dst_cmd:-$HOME/.local/bin/$pkg_cmd_name}"
 258         pkg_dst_bin="$(dirname $pkg_dst_cmd)"
 259         pkg_dst="$(dirname $pkg_dst_bin)"
 260
 261         pkg_src_cmd="${pkg_src_cmd:-$HOME/.local/xbin/$pkg_cmd_name-$WEBI_VERSION}"
 262         pkg_src_bin="$(dirname $pkg_src_cmd)"
 263         pkg_src="$(dirname $pkg_src_bin)"
 264     else
 265         pkg_dst="${pkg_dst:-$HOME/.local/opt/$pkg_cmd_name}"
 266         pkg_dst_bin="${pkg_dst_bin:-$pkg_dst/bin}"
 267         pkg_dst_cmd="${pkg_dst_cmd:-$pkg_dst_bin/$pkg_cmd_name}"
 268
 269         pkg_src="${pkg_src:-$HOME/.local/opt/$pkg_cmd_name-v$WEBI_VERSION}"
 270         pkg_src_bin="${pkg_src_bin:-$pkg_src/bin}"
 271         pkg_src_cmd="${pkg_src_cmd:-$pkg_src_bin/$pkg_cmd_name}"
 272     fi
 273
 274     [ -n "$(command -v pkg_pre_install)" ] && pkg_pre_install || webi_pre_install
 275
 276     pushd "$WEBI_TMP" 2>&1 >/dev/null
 277         echo "Installing to $pkg_src_cmd"
 278         [ -n "$(command -v pkg_install)" ] && pkg_install || webi_install
 279     popd 2>&1 >/dev/null
 280
 281     webi_link
 282
 283     pushd "$WEBI_TMP" 2>&1 >/dev/null
 284         [ -n "$(command -v pkg_post_install)" ] && pkg_post_install || webi_post_install
 285     popd 2>&1 >/dev/null
 286
 287     pushd "$WEBI_TMP" 2>&1 >/dev/null
 288         [ -n "$(command -v pkg_done_message)" ] && pkg_done_message || _webi_done_message
 289     popd 2>&1 >/dev/null
 290
 291     echo ""
 292 fi
 293
 294 rm -rf "$WEBI_TMP"
 295
 296 }