[gtk/wip/fanc999/fontchooser.win32.gtk3: 20/21] MSVC builds: Add a .bat script to regenerate demos.h.win32

[Chun-wei Fan <fanchunwei src gnome org>]

commit d9e93e25461e99a8be0c3d71da23886f9734ee44
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Wed Jan 9 00:33:48 2019 +0800

    MSVC builds: Add a .bat script to regenerate demos.h.win32
    
    This adds a batch script which in turn calls the geninclude.pl.in PERL
    script in demos/gtk-demo to re-generate demos.h.win32 with or without
    the font features demo program by whether the "font" argument is
    specified.
    
    Note that the extra space character just before the first set FONT_MSG
    line is intentional.
    
    The complete batch script is generated upon 'make dist' so that the demo
    listings can be as updated as possible.

 build/win32/Makefile.am                    | 17 ++++++++++-----
 build/win32/regenerate-demos-h-win32.batin | 35 ++++++++++++++++++++++++++++++
 demos/gtk-demo/Makefile.am                 | 13 ++++++++++-
 3 files changed, 58 insertions(+), 7 deletions(-)
---
diff --git a/build/win32/Makefile.am b/build/win32/Makefile.am
index e47c8c411e..198ff4aff2 100644
--- a/build/win32/Makefile.am
+++ b/build/win32/Makefile.am
@@ -1,7 +1,14 @@
 include $(top_srcdir)/Makefile.decl
 
+GENERATED_ITEMS = regenerate-demos-h-win32.bat
+
+regenerate-demos-h-win32.bat: $(srcdir)/regenerate-demos-h-win32.batin demos.list
+       -$(RM) $@
+       $(CPP) -P - -traditional-cpp <$< >$@
+       $(RM) demos.list
+
 if HAVE_INTROSPECTION
-GENERATED_ITEMS = \
+GENERATED_ITEMS += \
        introspection.body.mak  \
        Gdk_3_0_gir_list                \
        GdkWin32_3_0_gir_list   \
@@ -19,13 +26,10 @@ introspection.body.mak: $(MSVC_INTROSPECTION_INTERMEDIATE_FILES)
        done
        $(RM) $(MSVC_INTROSPECTION_INTERMEDIATE_FILES)
 
-DISTCLEANFILES = $(GENERATED_ITEMS)
-
-else
-GENERATED_ITEMS =
-DISTCLEANFILES =
 endif
 
+DISTCLEANFILES = $(GENERATED_ITEMS)
+
 SUBDIRS =      \
        vs9     \
        vs10    \
@@ -43,6 +47,7 @@ EXTRA_DIST += \
        pc_base.py                      \
        gtkpc.py                        \
        README_EGL_MSVC.txt             \
+       regenerate-demos-h-win32.batin  \
        $(GENERATED_ITEMS)
 
 -include $(top_srcdir)/git.mk
diff --git a/build/win32/regenerate-demos-h-win32.batin b/build/win32/regenerate-demos-h-win32.batin
new file mode 100644
index 0000000000..894359cf43
--- /dev/null
+++ b/build/win32/regenerate-demos-h-win32.batin
@@ -0,0 +1,35 @@
+@echo off
+
+set TARGET=demos.h.win32
+set DEMOS= ^
+#include "demos.list"
+ 
+set FONT_MSG=without font features demo
+
+if "%1" == "" goto continue
+if not "%1" == "font" goto fail
+set DEMOS=%DEMOS% font_features.c
+set FONT_MSG=with font features demo
+
+:continue
+cd ..\..\demos\gtk-demo
+if exist %TARGET% ren %TARGET% %TARGET%.bak
+
+perl geninclude.pl.in %DEMOS% > %TARGET%
+
+goto done_script
+
+:fail
+echo Only "font" is accepted as a argument to this batch script
+goto end
+
+:done_script
+for %%T in (%TARGET%) do if exist %%T if %%~zT gtr 0 echo %%T is successfully regenerated %FONT_MSG%
+for %%T in (%TARGET%) do if exist %%T if %%~zT equ 0 del %%T
+if exist %TARGET% if exist %TARGET%.bak del %TARGET%.bak
+if not exist %TARGET% echo %TARGET% is not regenerated, restoring existing %TARGET%
+if not exist %TARGET% ren %TARGET%.bak %TARGET%
+
+:end
+cd ..\..\build\win32
+
diff --git a/demos/gtk-demo/Makefile.am b/demos/gtk-demo/Makefile.am
index edec751e10..4683a29b58 100644
--- a/demos/gtk-demo/Makefile.am
+++ b/demos/gtk-demo/Makefile.am
@@ -209,9 +209,20 @@ gtk3_demo_application_EXCLUDES = dummy
 
 include $(top_srcdir)/build/Makefile.msvcproj
 
+$(top_builddir)/build/win32/demos.list: Makefile
+       -$(RM) $@
+       for F in $(demos_base); do \
+               case $$F in \
+               *.c) \
+                       echo $$F' ^'>>$(top_builddir)/build/win32/demos.list \
+                       ;; \
+               esac \
+       done
+
 dist-hook: \
        $(top_builddir)/build/win32/vs9/gtk3-demo.vcproj        \
-       $(top_builddir)/build/win32/vs9/gtk3-demo-application.vcproj
+       $(top_builddir)/build/win32/vs9/gtk3-demo-application.vcproj    \
+       $(top_builddir)/build/win32/demos.list
 
 DISTCLEANFILES = demos.h demos.h.win32 $(extra_nodist_demo_sources)