[CMake] Splitting directory and file.

[Michael Wild]

On 03/03/2011 05:00 AM, Pablo Zurita wrote:
> Thanks for the help guys. With that I was able to write the following
> function that allows me to deal with my source as I want.
> 
> 	# create_source_group(relativeSourcePath sourceGroupName files)
> 	#
> 	# Creates a source group with the specified name relative to the relative path
> 	# specified.
> 	#
> 	# Parameters:
> 	#	- sourceGroupName: Name of the source group to create.
> 	#	- relativeSourcePath: Relative path to the files.
> 	#	- sourceFiles: Files to add to the source group.
> 	#
> 	# For example if you have the following directory structure:
> 	#
> 	#	- ExampleApplication
> 	#		- include
> 	#			- Main.h
> 	#				- Window
> 	#					Window.h
> 	#		- source
> 	#			- Main.cpp
> 	#				- Window
> 	#					Window.cpp
> 	#
> 	# You can get your list of files and call create_source_group the following way
> 	#
> 	#	file(GLOB_RECURSE my_source_files ${CMAKE_CURRENT_SOURCE_DIR}/source/*)
> 	#	create_source_group("Source Files"
> "${CMAKE_CURRENT_SOURCE_DIR}/source" ${my_source_files})
> 	#	file(GLOB_RECURSE my_header_files ${CMAKE_CURRENT_SOURCE_DIR}/include/*)
> 	#	create_source_group("Header Files"
> "${CMAKE_CURRENT_SOURCE_DIR}/include" ${my_header_files})
> 	#	add_executable(ExampleApplication ${my_source_files} ${my_header_files})
> 	#
> 	# Then the generated solution would look like this
> 	#
> 	#	- ExampleApplication (project)
> 	#		- Header Files
> 	#			- Main.h
> 	#				- Window
> 	#					Window.h
> 	#		- Source Files
> 	#			- Main.cpp
> 	#				- Window
> 	#					Window.cpp
> 	#
> 	function(create_source_group sourceGroupName relativeSourcePath sourceFiles)
> 		FOREACH(currentSourceFile ${ARGN})
> 			FILE(RELATIVE_PATH folder ${relativeSourcePath} ${currentSourceFile})
> 			get_filename_component(filename ${folder} NAME)
> 			string(REPLACE ${filename} "" folder ${folder})
> 			if(NOT folder STREQUAL "")
> 				string(REGEX REPLACE "/+$" "" folderlast ${folder})
> 				string(REPLACE "/" "\\" folderlast ${folderlast})
> 				SOURCE_GROUP("${sourceGroupName}\\${folderlast}" FILES ${currentSourceFile})
> 			endif(NOT folder STREQUAL "")
> 		ENDFOREACH(currentSourceFile ${ARGN})
> 	endfunction(create_source_group)
> 
> 
> Thanks,
> Pablo Zurita.
> 
> On Wed, Mar 2, 2011 at 12:17 AM, Pablo Zurita <pzurita at gmail.com> wrote:
>> Hello everybody,
>>
>> I'm just getting started and I need some help dealing with strings in
>> CMake. Basically what I have a bunch of strings such as the ones
>> below:
>>
>> "Main.cpp"
>> "Window/Example/Example.cpp"
>> "Window/Window.cpp"
>>
>> What I need to do is create two strings for each, one is going to be
>> the directory, so the output in order for the list above is:
>>
>> ""
>> "Window/Example"
>> "Window"
>>
>> And the other string I need is the file itself. So the output for that would be
>>
>> "Main.cpp"
>> "Example.cpp"
>> "Window.cpp"
>>
>> Since I'm processing each one by one it doesn't matter if there are collisions.
>>
>> As you can see all I need to is find the first forward slash on the
>> string reading from right to left, and then put what's on the left of
>> that string on one variable, and what is to the right in another.
>>
>> Does anybody know how I can do that?
>>
>> Thanks,
>> Pablo Zurita.
>>


Using file(GLOB) or file(GLOB_RECURSE) to assemble a list of source
files is usually a bad idea. If you add or remove a source file, you
will have to re-run CMake manually. If you listed all sources
explicitly, there would be no such problem, as the build system would
notice that the CMakeLists.txt has been modified, and then re-run CMake.

Michael