get_define can concatenate string literals.

Added method concatenate_string_literals to CCompiler. Will concatenate
  string literals.
Added keyword argument 'concatenate_string_literals' to Compiler.get_define.
  If used will apply concatenate_string_literals to its return value.

1 files changed, 10 insertions, 1 deletions

diff --git a/mesonbuild/compilers/c.py b/mesonbuild/compilers/c.py
index 6145574..dc7a9f5 100644
--- a/mesonbuild/compilers/c.py
+++ b/mesonbuild/compilers/c.py
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import subprocess, os.path
+import subprocess, os.path, re
 
 from .. import mlog
 from .. import coredata
@@ -934,6 +934,15 @@ class CCompiler(Compiler):
         code = 'int main(int argc, char **argv) { return 0; }'
         return self.has_arguments(args, env, code, mode='link')
 
+    def concatenate_string_literals(self, s):
+        pattern = re.compile(r'(?P<pre>.*([^\\]")|^")(?P<str1>([^\\"]|\\.)*)"\s+"(?P<str2>([^\\"]|\\.)*)(?P<post>".*)')
+        ret = s
+        m = pattern.match(ret)
+        while m:
+            ret = ''.join(m.group('pre', 'str1', 'str2', 'post'))
+            m = pattern.match(ret)
+        return ret
+
 class ClangCCompiler(ClangCompiler, CCompiler):
     def __init__(self, exelist, version, clang_type, is_cross, exe_wrapper=None, **kwargs):
         CCompiler.__init__(self, exelist, version, is_cross, exe_wrapper, **kwargs)