diff options
| author | Jari Vetoniemi <jari.vetoniemi@indooratlas.com> | 2020-03-16 18:49:26 +0900 |
|---|---|---|
| committer | Jari Vetoniemi <jari.vetoniemi@indooratlas.com> | 2020-03-30 00:39:06 +0900 |
| commit | fcbf63e62c627deae76c1b8cb8c0876c536ed811 (patch) | |
| tree | 64cb17de3f41a2b6fef2368028fbd00349946994 /jni/ruby/win32/ifchange.bat | |
Fresh start
Diffstat (limited to 'jni/ruby/win32/ifchange.bat')
| -rwxr-xr-x | jni/ruby/win32/ifchange.bat | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/jni/ruby/win32/ifchange.bat b/jni/ruby/win32/ifchange.bat new file mode 100755 index 0000000..ed10914 --- /dev/null +++ b/jni/ruby/win32/ifchange.bat @@ -0,0 +1,95 @@ +@echo off
+:: usage: ifchange target temporary
+
+set timestamp=
+set keepsuffix=
+set empty=
+:optloop
+for %%I in (%1) do set opt=%%~I
+if "%opt%" == "--timestamp" (
+ set timestamp=.
+ shift
+ goto :optloop
+) else if "%opt:~0,12%" == "--timestamp=" (
+ set timestamp=%opt:~12%
+ shift
+ goto :optloop
+) else if "%opt%" == "--keep" (
+ set keepsuffix=.old
+ shift
+ goto :optloop
+) else if "%opt:~0,7%" == "--keep=" (
+ set keepsuffix=%opt:~7%
+ shift
+ goto :optloop
+) else if "%opt%" == "--empty" (
+ set empty=yes
+ shift
+ goto :optloop
+)
+if "%opt%" == "" goto :end
+
+set dest=%1
+set src=%2
+set dest=%dest:/=\%
+set src=%src:/=\%
+if not "%dest%" == "" if not "%dest%" == "%%dest:/=\%%" goto :nt
+
+if not exist %2 goto :end
+
+:: check if fc.exe works.
+echo foo > conftst1.tmp
+echo bar > conftst2.tmp
+fc.exe conftst1.tmp conftst2.tmp > nul
+if not errorlevel 1 goto :brokenfc
+del conftst1.tmp > nul
+del conftst2.tmp > nul
+
+:: target does not exist or new file differs from it.
+if not exist %1 goto :update
+fc.exe %1 %2 > nul
+if errorlevel 1 goto :update
+
+:unchange
+echo %1 unchanged.
+del %2
+goto :end
+
+:brokenfc
+del conftest1.tmp > nul
+del conftest2.tmp > nul
+echo FC.EXE does not work properly.
+echo assuming %1 should be changed.
+
+:update
+echo %1 updated.
+:: if exist %1 del %1
+dir /b %2
+if "%keepsuffix%" != "" %1 %1%keepsuffix%
+copy %2 %1
+del %2
+goto :end
+
+:nt
+if exist %dest% (
+ if not exist %src% goto :nt_unchanged1
+ if "%empty%" == "" for %%I in (%src%) do if %%~zI == 0 goto :nt_unchanged
+ fc.exe %dest% %src% > nul && (
+ :nt_unchanged
+ del %src%
+ :nt_unchanged1
+ for %%I in (%1) do echo %%~I unchanged
+ goto :nt_end
+ )
+)
+for %%I in (%1) do echo %%~I updated
+copy %src% %dest% > nul
+del %src%
+
+:nt_end
+if "%timestamp%" == "" goto :end
+ if "%timestamp%" == "." (
+ for %%I in ("%dest%") do set timestamp=%%~dpI.time.%%~nxI
+ )
+ goto :end > "%timestamp%"
+:end
|