scanner: replace zbar with zxing

cmake/FindZBAR.cmake

@@ -1,21 +0,0 @@
-find_package(PkgConfig)
-
-if(PkgConfig_FOUND)
-    pkg_check_modules(PC_ZBAR QUIET zbar)
-    if(PC_ZBAR_FOUND)
-        set(ZBAR_DEFINITIONS ${PC_ZBAR_CFLAGS_OTHER})
-        find_library(ZBAR_LIBRARIES NAMES zbar HINTS ${PC_ZBAR_LIBDIR} ${PC_ZBAR_LIBRARY_DIRS})
-        find_path(ZBAR_INCLUDE_DIR Decoder.h HINTS ${PC_ZBAR_INCLUDEDIR} ${PC_ZBAR_INCLUDE_DIRS})
-    endif()
-endif()
-
-if(NOT ZBAR_INCLUDE_DIR)
-    find_path(ZBAR_H_PATH zbar.h)
-    if(ZBAR_H_PATH)
-        set(ZBAR_INCLUDE_DIR "${ZBAR_H_PATH}")
-    endif()
-endif()
-
-include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(ZBAR  DEFAULT_MSG  ZBAR_LIBRARIES ZBAR_INCLUDE_DIR)
-message(STATUS "Found zbar libraries ${ZBAR_LIBRARIES}")

cmake/FindZXing.cmake

@@ -0,0 +1,55 @@
+############################################################################
+# FindZxing.txt
+# Copyright (C) 2018  Belledonne Communications, Grenoble France
+#
+############################################################################
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+############################################################################
+#
+# - Find the zxing include file and library
+#
+#  ZXING_FOUND - system has zxing
+#  ZXING_INCLUDE_DIRS - the zxing include directory
+#  ZXING_LIBRARIES - The libraries needed to use zxing
+
+find_path(ZXING_INCLUDE_DIRS
+	NAMES
+		ZXing/BarcodeFormat.h
+		ZXing/BitHacks.h
+		ZXing/ByteArray.h
+		ZXing/CharacterSet.h
+		ZXing/Flags.h
+		ZXing/GTIN.h
+		ZXing/TextUtfEncoding.h
+		ZXing/ZXAlgorithms.h
+		ZXing/ZXConfig.h
+	PATH_SUFFIXES include
+)
+
+find_library(ZXING_LIBRARIES
+	NAMES ZXing libZXing
+	PATH_SUFFIXES Frameworks bin lib lib64
+)
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(ZXing
+	DEFAULT_MSG
+	ZXING_INCLUDE_DIRS ZXING_LIBRARIES
+)
+
+mark_as_advanced(ZXING_INCLUDE_DIRS ZXING_LIBRARIES)
+