Automate bitmap image regeneration.

scripts/bitmaps/process_all_targets.sh

Index: scripts/bitmaps/process_all_targets.sh
diff --git a/scripts/bitmaps/process_all_targets.sh b/scripts/bitmaps/process_all_targets.sh
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+#!/bin/bash -e
+# Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+#
+# This script searches the directory tree passed in as the parameter for
+# bmp_*.fv files, figures out the FWID strings from files' names, verifies the
+# FWIDs' integrity (by recalculating the CRC included in the FWID string) and
+# then rebuilds the bitmaps with the appropriate text and target specific
+# geometry.
+#
+
+
+# Given a string "<prefix>_<el1>_<el2>_.._<eln>_<suffix>" print string
+# '<el1> <el2> .. <eln>', i.e. <prefix>_ and _<suffix> dropped and underscores
+# replaced with spaces.
+get_elements() {
+  echo $1 | awk 'BEGIN {FS="_"}; {
+    x = 2;
+    do {
+      printf "%s ", $x;
+      x += 1
+    } while (x < (NF - 1))
+    printf "%s", $(NF-1);
+  }'
+}
+
+# Concatenate input parameters into a space separated string, calculate the
+# string's CRC32 and print the last four hex digits of the crc.
+signer() {
+   python -c "import sys,zlib;
+me=' '.join(sys.argv[1:]);
+print ('%04u'%(zlib.crc32(me)&0xffffffffL))[-4:]" $1
+}
+
+
+if [ "$#" != "1" -o ! -d "$1" ]; then
+   echo "One parameter is required, the path to the chromeos release tree" >&2
+   exit 1
+fi
+
+tree=$(readlink -f $1)
+cd $(dirname "$0")
+for f in $(find "${tree}" -type f -name 'bmp_*_[0-9]*.fv'); do
+  filename=$(basename "$f")
+  elements="$(get_elements $filename)"
+  signature=$(signer "${elements}")
+
+  # Rebuild file name to verify CRC.
+  comp_name=bmp_${elements// /_}_${signature}.fv
+  if [ "${filename}" !=  "${comp_name}" ]; then
+    echo "skipping ${filename} (crc mismatch with ${comp_name})"
+    continue
+  fi
+  echo "Processing ${filename}"
+  case "${elements}" in
+    (*ACER*) geometry='1366x768'
+      ;;
+    (*MARIO*) geometry='1280x800'
+      ;;
+    (*) echo "skipping ${filename}, unknown target geometry"
+      echo
+      continue
+    ;;
+  esac
+  ./make_bmp_images.sh "${elements} ${signature}" "${geometry}"
+  echo
+done