[Qemu-devel] [PATCH RFC 09/21] qapi: Don't absolutize include file name in error messages

[Markus Armbruster <armbru@redhat.com>]

Error messages print absolute filenames of included files even gave a
relative one on the command line:

     PYTHONPATH=scripts python -B tests/qapi-schema/test-qapi.py tests/qapi-schema/include-cycle.json
    In file included from tests/qapi-schema/include-cycle.json:1:
    In file included from /work/armbru/qemu/tests/qapi-schema/include-cycle-b.json:1:
    /work/armbru/qemu/tests/qapi-schema/include-cycle-c.json:1: Inclusion loop for include-cycle.json

Improve this to

    In file included from tests/qapi-schema/include-cycle.json:1:
    In file included from tests/qapi-schema/include-cycle-b.json:1:
    tests/qapi-schema/include-cycle-c.json:1: Inclusion loop for include-cycle.json

Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 scripts/qapi/common.py                | 12 ++++++------
 tests/qapi-schema/include-no-file.err |  2 +-
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/scripts/qapi/common.py b/scripts/qapi/common.py
index be0fcc548a..6c6962a364 100644
--- a/scripts/qapi/common.py
+++ b/scripts/qapi/common.py
@@ -255,9 +255,8 @@ class QAPIDoc(object):
 class QAPISchemaParser(object):
 
     def __init__(self, fp, previously_included=[], incl_info=None):
-        abs_fname = os.path.abspath(fp.name)
         self.fname = fp.name
-        previously_included.append(abs_fname)
+        previously_included.append(os.path.abspath(fp.name))
         self.incl_info = incl_info
         self.src = fp.read()
         if self.src == '' or self.src[-1] != '\n':
@@ -288,7 +287,7 @@ class QAPISchemaParser(object):
                 if not isinstance(include, str):
                     raise QAPISemError(info,
                                        "Value of 'include' must be a string")
-                self._include(include, info, os.path.dirname(abs_fname),
+                self._include(include, info, os.path.dirname(self.fname),
                               previously_included)
             elif "pragma" in expr:
                 self.reject_expr_doc(cur_doc)
@@ -321,7 +320,8 @@ class QAPISchemaParser(object):
                 % doc.symbol)
 
     def _include(self, include, info, base_dir, previously_included):
-        incl_abs_fname = os.path.join(base_dir, include)
+        incl_fname = os.path.join(base_dir, include)
+        incl_abs_fname = os.path.abspath(incl_fname)
         # catch inclusion cycle
         inf = info
         while inf:
@@ -333,9 +333,9 @@ class QAPISchemaParser(object):
         if incl_abs_fname in previously_included:
             return
         try:
-            fobj = open(incl_abs_fname, 'r')
+            fobj = open(incl_fname, 'r')
         except IOError as e:
-            raise QAPISemError(info, '%s: %s' % (e.strerror, include))
+            raise QAPISemError(info, '%s: %s' % (e.strerror, incl_fname))
         exprs_include = QAPISchemaParser(fobj, previously_included, info)
         self.exprs.extend(exprs_include.exprs)
         self.docs.extend(exprs_include.docs)
diff --git a/tests/qapi-schema/include-no-file.err b/tests/qapi-schema/include-no-file.err
index d5b9b22d85..e42bcf4bc1 100644
--- a/tests/qapi-schema/include-no-file.err
+++ b/tests/qapi-schema/include-no-file.err
@@ -1 +1 @@
-tests/qapi-schema/include-no-file.json:1: No such file or directory: include-no-file-sub.json
+tests/qapi-schema/include-no-file.json:1: No such file or directory: tests/qapi-schema/include-no-file-sub.json
-- 
2.13.6