Added support for passing flags to the script from Vim.

Closes ycm-core#1

README.md

@@ -7,7 +7,7 @@ It is reasonably fast, taking ~10 seconds to generate a configuration file for t
 ## Usage
 Run ```./config-gen.py PROJECT_DIRECTORY```, where ```PROJECT_DIRECTORY``` is the root directory of your project's build system (i.e. the one containing the root Makefile, etc.)
 
-YCM-Generator can also be used as a Vim plugin. Once installed with Vundle/NeoBundle/etc., use the ```:YcmGenerateConfig``` command to generate a config file for the current directory.
+YCM-Generator can also be used as a Vim plugin. Once installed with Vundle/NeoBundle/etc., use the ```:YcmGenerateConfig``` command to generate a config file for the current directory. This command accepts the same arguments as ```./config-gen.py```, but does not require the project directory to be specified (it defaults to the current working directory).
 
 ## Requirements and Limitations
 * Requirements:

plugin/ycm-generator.vim

@@ -1,10 +1,17 @@
 
 let s:config_gen = expand("<sfile>:p:h:h") . "/config_gen.py"
 
-command -nargs=0 YcmGenerateConfig call s:YcmGenerateConfig()
+command -nargs=? YcmGenerateConfig call s:YcmGenerateConfig("<args>")
+
+function s:YcmGenerateConfig(flags)
+    let l:cmd = "! " . s:config_gen . " " . a:flags
+
+    " Only append the working directory if the last option is not a flag
+    let l:split_flags = split(a:flags)
+    if len(l:split_flags) == 0 || l:split_flags[-1] =~ "^-"
+        let l:cmd = l:cmd . " " . getcwd()
+    endif
 
-function s:YcmGenerateConfig()
-    let l:cmd = "! " . s:config_gen . " " . getcwd()
     execute l:cmd
 endfunction