split isystem includes from normal includes

All includes coming from isystem where wrong as the regex was not able
to recognize that the isystem and following path belong together.
Additionally stripping the first two characters resulted in broken paths
in this case.

Change-Id: Iaa8e484d1ddcd4c8744d1e37a006ebf915cdfc84
Reviewed-on: https://gerrit.libreoffice.org/10815Reviewed-by: Markus Mohrhard <markus.mohrhard@googlemail.com>
Tested-by: Markus Mohrhard <markus.mohrhard@googlemail.com>

bin/gbuild-to-ide

@@ -26,12 +26,13 @@ class GbuildParserState:
         self.defs = {}
         self.cxxobjects = []
         self.linked_libs = []
+        self.include_sys = []
 
 
 class GbuildLinkTarget:
-    def __init__(self, name, location, include, defs, cxxobjects, linked_libs):
-        (self.name, self.location, self.include, self.defs, self.cxxobjects, self.linked_libs) = (
-        name, location, include, defs, cxxobjects, linked_libs)
+    def __init__(self, name, location, include, include_sys, defs, cxxobjects, linked_libs):
+        (self.name, self.location, self.include, self.include_sys, self.defs, self.cxxobjects, self.linked_libs) = (
+        name, location, include, include_sys, defs, cxxobjects, linked_libs)
 
     def short_name(self):
         return self.name
@@ -40,13 +41,13 @@ class GbuildLinkTarget:
         return not self.include and not self.defs and not self.cxxobjects and not self.linked_libs
 
     def __str__(self):
-        return '%s at %s with include path: %s, defines %s, objects: %s and linked libs: %s' % (
-        self.short_name(), self.location, self.include, self.defs, self.cxxobjects, self.linked_libs)
+        return '%s at %s with include path: %s, isystem includes: %s, defines %s, objects: %s and linked libs: %s' % (
+        self.short_name(), self.location, self.include, self.include_sys, self.defs, self.cxxobjects, self.linked_libs)
 
 
 class GbuildLib(GbuildLinkTarget):
-    def __init__(self, name, library, location, include, defs, cxxobjects, linked_libs):
-        GbuildLinkTarget.__init__(self, name, location, include, defs, cxxobjects, linked_libs)
+    def __init__(self, name, library, location, include, include_sys, defs, cxxobjects, linked_libs):
+        GbuildLinkTarget.__init__(self, name, location, include, include_sys, defs, cxxobjects, linked_libs)
         self.library = library
 
     def short_name(self):
@@ -61,8 +62,8 @@ class GbuildLib(GbuildLinkTarget):
 
 
 class GbuildExe(GbuildLinkTarget):
-    def __init__(self, name, executable, location, include, defs, cxxobjects, linked_libs):
-        GbuildLinkTarget.__init__(self, name, location, include, defs, cxxobjects, linked_libs)
+    def __init__(self, name, executable, location, include, include_sys, defs, cxxobjects, linked_libs):
+        GbuildLinkTarget.__init__(self, name, location, include, include_sys, defs, cxxobjects, linked_libs)
         self.executable = executable
 
     def short_name(self):
@@ -84,7 +85,8 @@ class GbuildParser:
     rulepattern = re.compile('^(.+?):( .*)?$')
     libpattern = re.compile('#  [a-z]+ to execute \(from [\'`](.*)/Library_(.*)\.mk\', line [0-9]*\):')
     exepattern = re.compile('#  [a-z]+ to execute \(from [\'`](.*)/Executable_(.*)\.mk\', line [0-9]*\):')
-    includepattern = re.compile('# INCLUDE := (.*)')
+    includepattern = re.compile('-I(\S+)')
+    isystempattern = re.compile('-isystem\s*(\S+)')
     defspattern = re.compile('# DEFS := (.*)')
     cxxpattern = re.compile('# CXXOBJECTS := (.*)')
     linkedlibspattern = re.compile('# LINKED_LIBS := (.*)')
@@ -147,7 +149,7 @@ class GbuildParser:
                 libname = self.libnames.get(state.ilib, None)
                 self.libs.append(
                     GbuildLib(libmatch.group(2), libname, libmatch.group(1),
-                              state.include, state.defs, state.cxxobjects,
+                              state.include, state.include_sys, state.defs, state.cxxobjects,
                               state.linked_libs))
                 state = GbuildParserState()
                 continue
@@ -156,13 +158,16 @@ class GbuildParser:
                 exename = self.exenames.get(state.target, None)
                 self.exes.append(
                     GbuildExe(exematch.group(2), exename, exematch.group(1),
-                              state.include, state.defs, state.cxxobjects,
+                              state.include, state.include_sys, state.defs, state.cxxobjects,
                               state.linked_libs))
                 state = GbuildParserState()
                 continue
             includematch = GbuildParser.includepattern.match(line)
-            if includematch:
-                state.include = [includeswitch.strip()[2:] for includeswitch in includematch.group(1).split(' ') if
+            if line.find('# INCLUDE :=') == 0:
+                isystemmatch = GbuildParser.isystempattern.findall(line)
+                if isystemmatch:
+                    state.include_sys = isystemmatch
+                state.include = [includeswitch.strip() for includeswitch in GbuildParser.includepattern.findall(line) if
                                  len(includeswitch) > 2]
                 continue
             defsmatch = GbuildParser.defspattern.match(line)