Support gzipping of svgz also on windows, using 7z

Reviewers: #plasma, #windows

Subscribers: kde-frameworks-devel

Tags: #frameworks

Differential Revision: https://phabricator.kde.org/D20499

cmake/Find7z.cmake

@@ -0,0 +1,47 @@
+# Finds 7z.
+#
+#  7z_FOUND     - True if 7z is found.
+#  7z_EXECUTABLE - Path to executable
+
+#=============================================================================
+# Copyright 2019 Friedrich W. H. Kossebau <kossebau@kde.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+# 3. The name of the author may not be used to endorse or promote products
+#    derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#=============================================================================
+
+find_program(7z_EXECUTABLE NAMES 7z.exe 7za.exe)
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(7z
+    FOUND_VAR
+        7z_FOUND
+    REQUIRED_VARS
+        7z_EXECUTABLE
+)
+mark_as_advanced(7z_EXECUTABLE)
+
+set_package_properties(7z PROPERTIES
+    URL "https://www.7-zip.org/"
+    DESCRIPTION "Data (de)compression program"
+)

src/desktoptheme/CMakeLists.txt

@@ -2,10 +2,17 @@
 option(GZIP_DESKTOPTHEME_SVG "Install Desktop Theme SVG files as .svgz." ON)
 
 if (GZIP_DESKTOPTHEME_SVG)
+    if(WIN32)
+        find_package(7z)
+        set_package_properties(7z PROPERTIES
+            TYPE REQUIRED
+        )
+    else()
         find_package(gzip)
         set_package_properties(gzip PROPERTIES
             TYPE REQUIRED
         )
+    endif()
 endif()
 
 # Helper function, private for now
@@ -55,6 +62,18 @@ function(PLASMA_INSTALL_DESKTOPTHEME_SVGS theme_name)
         if (GZIP_DESKTOPTHEME_SVG)
             set(_gzipped_file_displayname "${desktoptheme_COMPONENTDIR}/${_fileName}z")
             set(_gzipped_file "${CMAKE_CURRENT_BINARY_DIR}/${desktoptheme_GZIPDIR}/${_fileName}z")
+            if(WIN32)
+                add_custom_command(
+                    OUTPUT ${_gzipped_file}
+                    COMMAND ${7z_EXECUTABLE}
+                    ARGS
+                        a
+                        -tgzip
+                        ${_gzipped_file} ${_src_file}
+                    DEPENDS ${_src_file}
+                    COMMENT "Gzipping ${_gzipped_file_displayname}"
+                )
+            else()
                 add_custom_command(
                     OUTPUT ${_gzipped_file}
                     COMMAND ${gzip_EXECUTABLE}
@@ -65,6 +84,7 @@ function(PLASMA_INSTALL_DESKTOPTHEME_SVGS theme_name)
                     DEPENDS ${_src_file}
                     COMMENT "Gzipping ${_gzipped_file_displayname}"
                 )
+            endif()
         else()
             set(_gzipped_file "${_src_file}")
         endif()