pixel: Add shell script to update all variables

* Calls the python script for all devices, updates the files
* Far easier to update these via sed rather than from python

Change-Id: Ic52718f64ee313e9f578e6ad3e2e800d7679ad37

pixel/update-device-vars.sh

@@ -0,0 +1,85 @@
+#!/bin/bash
+#
+# update-vars:
+#
+#   Update Pixel device-specific variables by parsing Google's pages
+#
+#
+##############################################################################
+
+
+### SET ###
+
+# use bash strict mode
+set -euo pipefail
+
+
+### TRAPS ###
+
+# trap signals for clean exit
+trap 'rm -rf ${tmp_dir} && exit $?' EXIT
+trap 'error_m interrupted!' SIGINT
+
+### CONSTANTS ###
+readonly script_path="$(cd "$(dirname "$0")";pwd -P)"
+readonly vars_path="${script_path}/../vars/"
+
+readonly tmp_dir="${TMPDIR:-/tmp}/pixel"
+
+source "${vars_path}/devices"
+
+## HELP MESSAGE (USAGE INFO)
+# TODO
+
+### FUNCTIONS ###
+
+
+
+# error message
+# ARG1: error message for STDERR
+# ARG2: error status
+error_m() {
+  echo "ERROR: ${1:-'failed.'}" 1>&2
+  return "${2:-1}"
+}
+
+# print help message.
+help_message() {
+  echo "${help_message:-'No help available.'}"
+}
+
+main() {
+  mkdir -p "${tmp_dir}"
+  if [[ $# -ne 0 ]]; then
+    local ds="${@}"
+  else
+    local ds="${devices[@]}"
+  fi
+
+  for d in ${ds}; do
+    (
+      local tmp=$(mktemp "${tmp_dir}/${d}.XXXXXXXXXX")
+      local dv="${vars_path}/${d}"
+      source "${dv}"
+      ${script_path}/get-new-device-vars.py -b "${build_id}" -d "${d}"> "${tmp}"
+      source "${tmp}"
+      if [[ "${new_aosp_tag}" != "${aosp_tag}" ]]; then
+        sed -i "/ prev_aosp_tag=/c\readonly prev_aosp_tag=\"$aosp_tag\"" "${dv}"
+        sed -i "/ aosp_tag=/c\readonly aosp_tag=\"$new_aosp_tag\"" "${dv}"
+      fi
+      sed -i "/ image_url=/c\readonly image_url=\"$new_image_url\"" "${dv}"
+      sed -i "/ image_sha256=/c\readonly image_sha256=\"$new_image_sha256\"" "${dv}"
+      sed -i "/ flash_url=/c\readonly flash_url=\"$new_flash_url\"" "${dv}"
+      sed -i "/ ota_url=/c\readonly ota_url=\"$new_ota_url\"" "${dv}"
+      sed -i "/ ota_sha256=/c\readonly ota_sha256=\"$new_ota_sha256\"" "${dv}"
+      sed -i "/ security_patch=/c\readonly security_patch=\"$new_security_patch\"" "${dv}"
+    )
+  done
+}
+
+### RUN PROGRAM ###
+
+main "${@}"
+
+
+##