qapi: Use an explicit input file

Use an explicit input file on the command-line instead of reading from standard
input.

It also outputs the proper file name when there's an error.

Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/scripts/qapi.py b/scripts/qapi.py
index b474c39558..07a7a82f87 100644
--- a/scripts/qapi.py
+++ b/scripts/qapi.py
@@ -12,6 +12,7 @@
 # See the COPYING file in the top-level directory.
 
 from ordereddict import OrderedDict
+import os
 import sys
 
 builtin_types = [
@@ -263,9 +264,9 @@ def check_exprs(schema):
         if expr.has_key('union'):
             check_union(expr, expr_elem['info'])
 
-def parse_schema(fp):
+def parse_schema(input_file):
     try:
-        schema = QAPISchema(fp)
+        schema = QAPISchema(open(input_file, "r"))
     except QAPISchemaError, e:
         print >>sys.stderr, e
         exit(1)