1@echo off
2rem Copyright (C) 2007 The Android Open Source Project
3rem
4rem Licensed under the Apache License, Version 2.0 (the "License");
5rem you may not use this file except in compliance with the License.
6rem You may obtain a copy of the License at
7rem
8rem      http://www.apache.org/licenses/LICENSE-2.0
9rem
10rem Unless required by applicable law or agreed to in writing, software
11rem distributed under the License is distributed on an "AS IS" BASIS,
12rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13rem See the License for the specific language governing permissions and
14rem limitations under the License.
15
16rem This script is called by the other batch files to find a suitable Java.exe
17rem to use. The script changes the "java_exe" env variable. The variable
18rem is left unset if Java.exe was not found.
19
20rem Useful links:
21rem Command-line reference:
22rem   http://technet.microsoft.com/en-us/library/bb490890.aspx
23
24rem Query whether this system is 32-bit or 64-bit
25rem Note: Some users report that reg.exe is missing on their machine, so we
26rem check for that first, as we'd like to use it if we can.
27set sys_32=%SYSTEMROOT%\system32
28if exist %sys_32%\reg.exe (
29    rem This first-pass solution returns the correct architecture even if you
30    rem call this .bat file from a 32-bit process.
31    rem See also: http://stackoverflow.com/a/24590583/1299302
32    %sys_32%\reg query "HKLM\Hardware\Description\System\CentralProcessor\0"^
33    | %sys_32%\find /i "x86" > NUL && set arch_ext=32|| set arch_ext=64
34) else (
35    rem This fallback approach is simpler, but may misreport your architecture as
36    rem 32-bit if running from a 32-bit process. Still, it should serve to help
37    rem our users without reg.exe, at least.
38    if "%PROCESSOR_ARCHITECTURE%" == "x86" (set arch_ext=32) else (set arch_ext=64)
39)
40
41rem Check we have a valid Java.exe in the path. The return code will
42rem be 0 if the command worked or 1 if the exec failed (program not found).
43for /f "delims=" %%a in ('"%~dps0\find_java%arch_ext%.exe" -s') do set java_exe=%%a
44if not defined java_exe goto :CheckFailed
45
46:SearchJavaW
47rem Check if we can find a javaw.exe at the same location than java.exe.
48rem If that doesn't work, just fall back on the java.exe we just found.
49for /f "delims=" %%a in ('"%~dps0\find_java%arch_ext%.exe" -s -w') do set javaw_exe=%%a
50if not exist "%javaw_exe%" set javaw_exe=%java_exe%
51goto :EOF
52
53
54:CheckFailed
55echo.
56echo ERROR: No suitable Java found. In order to properly use the Android Developer
57echo Tools, you need a suitable version of Java JDK installed on your system.
58echo We recommend that you install the JDK version of JavaSE, available here:
59echo   http://www.oracle.com/technetwork/java/javase/downloads
60echo.
61echo If you already have Java installed, you can define the JAVA_HOME environment
62echo variable in Control Panel / System / Avanced System Settings to point to the
63echo JDK folder.
64echo.
65echo You can find the complete Android SDK requirements here:
66echo   http://developer.android.com/sdk/requirements.html
67echo.
68goto :EOF
69