src/rust-installer/gen-install-script.sh

   1 #!/bin/sh
   2 # Copyright 2014 The Rust Project Developers. See the COPYRIGHT
   3 # file at the top-level directory of this distribution and at
   4 # http://rust-lang.org/COPYRIGHT.
   5 #
   6 # Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   7 # http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   8 # <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   9 # option. This file may not be copied, modified, or distributed
  10 # except according to those terms.
  11
  12 set -u
  13
  14 msg() {
  15     echo "gen-install-script: ${1-}"
  16 }
  17
  18 step_msg() {
  19     msg
  20     msg "$1"
  21     msg
  22 }
  23
  24 warn() {
  25     echo "gen-install-script: WARNING: $1" >&2
  26 }
  27
  28 err() {
  29     echo "gen-install-script: error: $1" >&2
  30     exit 1
  31 }
  32
  33 need_ok() {
  34     if [ $? -ne 0 ]
  35     then
  36         err "$1"
  37     fi
  38 }
  39
  40 need_cmd() {
  41     if command -v $1 >/dev/null 2>&1
  42     then msg "found $1"
  43     else err "need $1"
  44     fi
  45 }
  46
  47 putvar() {
  48     local t
  49     local tlen
  50     eval t=\$$1
  51     eval tlen=\${#$1}
  52     if [ $tlen -gt 35 ]
  53     then
  54         printf "gen-install-script: %-20s := %.35s ...\n" $1 "$t"
  55     else
  56         printf "gen-install-script: %-20s := %s %s\n" $1 "$t"
  57     fi
  58 }
  59
  60 valopt() {
  61     VAL_OPTIONS="$VAL_OPTIONS $1"
  62
  63     local op=$1
  64     local default=$2
  65     shift
  66     shift
  67     local doc="$*"
  68     if [ $HELP -eq 0 ]
  69     then
  70         local uop=$(echo $op | tr '[:lower:]' '[:upper:]' | tr '\-' '\_')
  71         local v="CFG_${uop}"
  72         eval $v="$default"
  73         for arg in $CFG_ARGS
  74         do
  75             if echo "$arg" | grep -q -- "--$op="
  76             then
  77                 local val=$(echo "$arg" | cut -f2 -d=)
  78                 eval $v=$val
  79             fi
  80         done
  81         putvar $v
  82     else
  83         if [ -z "$default" ]
  84         then
  85             default="<none>"
  86         fi
  87         op="${default}=[${default}]"
  88         printf "    --%-30s %s\n" "$op" "$doc"
  89     fi
  90 }
  91
  92 opt() {
  93     BOOL_OPTIONS="$BOOL_OPTIONS $1"
  94
  95     local op=$1
  96     local default=$2
  97     shift
  98     shift
  99     local doc="$*"
 100     local flag=""
 101
 102     if [ $default -eq 0 ]
 103     then
 104         flag="enable"
 105     else
 106         flag="disable"
 107         doc="don't $doc"
 108     fi
 109
 110     if [ $HELP -eq 0 ]
 111     then
 112         for arg in $CFG_ARGS
 113         do
 114             if [ "$arg" = "--${flag}-${op}" ]
 115             then
 116                 op=$(echo $op | tr 'a-z-' 'A-Z_')
 117                 flag=$(echo $flag | tr 'a-z' 'A-Z')
 118                 local v="CFG_${flag}_${op}"
 119                 eval $v=1
 120                 putvar $v
 121             fi
 122         done
 123     else
 124         if [ ! -z "$META" ]
 125         then
 126             op="$op=<$META>"
 127         fi
 128         printf "    --%-30s %s\n" "$flag-$op" "$doc"
 129      fi
 130 }
 131
 132 flag() {
 133     BOOL_OPTIONS="$BOOL_OPTIONS $1"
 134
 135     local op=$1
 136     shift
 137     local doc="$*"
 138
 139     if [ $HELP -eq 0 ]
 140     then
 141         for arg in $CFG_ARGS
 142         do
 143             if [ "$arg" = "--${op}" ]
 144             then
 145                 op=$(echo $op | tr 'a-z-' 'A-Z_')
 146                 local v="CFG_${op}"
 147                 eval $v=1
 148                 putvar $v
 149             fi
 150         done
 151     else
 152         if [ ! -z "$META" ]
 153         then
 154             op="$op=<$META>"
 155         fi
 156         printf "    --%-30s %s\n" "$op" "$doc"
 157      fi
 158 }
 159
 160 validate_opt () {
 161     for arg in $CFG_ARGS
 162     do
 163         local is_arg_valid=0
 164         for option in $BOOL_OPTIONS
 165         do
 166             if test --disable-$option = $arg
 167             then
 168                 is_arg_valid=1
 169             fi
 170             if test --enable-$option = $arg
 171             then
 172                 is_arg_valid=1
 173             fi
 174             if test --$option = $arg
 175             then
 176                 is_arg_valid=1
 177             fi
 178         done
 179         for option in $VAL_OPTIONS
 180         do
 181             if echo "$arg" | grep -q -- "--$option="
 182             then
 183                 is_arg_valid=1
 184             fi
 185         done
 186         if [ "$arg" = "--help" ]
 187         then
 188             echo
 189             echo "No more help available for Configure options,"
 190             echo "check the Wiki or join our IRC channel"
 191             break
 192         else
 193             if test $is_arg_valid -eq 0
 194             then
 195                 err "Option '$arg' is not recognized"
 196             fi
 197         fi
 198     done
 199 }
 200
 201 msg "looking for install programs"
 202 msg
 203
 204 need_cmd sed
 205 need_cmd chmod
 206 need_cmd cat
 207
 208 CFG_ARGS="$@"
 209
 210 HELP=0
 211 if [ "$1" = "--help" ]
 212 then
 213     HELP=1
 214     shift
 215     echo
 216     echo "Usage: $0 [options]"
 217     echo
 218     echo "Options:"
 219     echo
 220 else
 221     step_msg "processing arguments"
 222 fi
 223
 224 OPTIONS=""
 225 BOOL_OPTIONS=""
 226 VAL_OPTIONS=""
 227
 228 valopt product-name "Product" "The name of the product, for display"
 229 valopt rel-manifest-dir "manifestlib" "The directory under lib/ where the manifest lives"
 230 valopt success-message "Installed." "The string to print after successful installation"
 231 valopt output-script "install.sh" "The name of the output script"
 232 valopt legacy-manifest-dirs "" "Places to look for legacy manifests to uninstall"
 233
 234 if [ $HELP -eq 1 ]
 235 then
 236     echo
 237     exit 0
 238 fi
 239
 240 step_msg "validating arguments"
 241 validate_opt
 242
 243 src_dir="$(cd $(dirname "$0") && pwd)"
 244
 245 rust_installer_version=`cat "$src_dir/rust-installer-version"`
 246
 247 # Replace dashes in the success message with spaces (our arg handling botches spaces)
 248 product_name=`echo "$CFG_PRODUCT_NAME" | sed "s/-/ /g"`
 249
 250 # Replace dashes in the success message with spaces (our arg handling botches spaces)
 251 success_message=`echo "$CFG_SUCCESS_MESSAGE" | sed "s/-/ /g"`
 252
 253 script_template=`cat "$src_dir/install-template.sh"`
 254
 255 # Using /bin/echo because under sh emulation dash *seems* to escape \n, which screws up the template
 256 script=`/bin/echo "$script_template"`
 257 script=`/bin/echo "$script" | sed "s/%%TEMPLATE_PRODUCT_NAME%%/\"$product_name\"/"`
 258 script=`/bin/echo "$script" | sed "s/%%TEMPLATE_REL_MANIFEST_DIR%%/$CFG_REL_MANIFEST_DIR/"`
 259 script=`/bin/echo "$script" | sed "s/%%TEMPLATE_SUCCESS_MESSAGE%%/\"$success_message\"/"`
 260 script=`/bin/echo "$script" | sed "s/%%TEMPLATE_LEGACY_MANIFEST_DIRS%%/\"$CFG_LEGACY_MANIFEST_DIRS\"/"`
 261 script=`/bin/echo "$script" | sed "s/%%TEMPLATE_RUST_INSTALLER_VERSION%%/\"$rust_installer_version\"/"`
 262
 263 /bin/echo "$script" > "$CFG_OUTPUT_SCRIPT"
 264 need_ok "couldn't write script"
 265 chmod u+x "$CFG_OUTPUT_SCRIPT"
 266 need_ok "couldn't chmod script"