From 1095ab823ebf863656bad7332bc90e06071311f6 Mon Sep 17 00:00:00 2001
From: Markus Lehtonen <markus.lehtonen@linux.intel.com>
Date: Fri, 11 Jan 2013 16:28:05 +0200
Subject: rpm helpers: implement _set/delete_special_macro() methods

Currently intended for updating '%patch' macros.

Signed-off-by: Markus Lehtonen <markus.lehtonen@linux.intel.com>
---
 gbp/rpm/__init__.py                                | 44 ++++++++++++++++++++++
 tests/test_rpm.py                                  | 12 +++++-
 .../specs/gbp-test-updates-reference.spec          |  3 ++
 tests/test_rpm_data/specs/gbp-test-updates.spec    |  6 ++-
 4 files changed, 63 insertions(+), 2 deletions(-)

diff --git a/gbp/rpm/__init__.py b/gbp/rpm/__init__.py
index 61cf13be..2bad49b2 100644
--- a/gbp/rpm/__init__.py
+++ b/gbp/rpm/__init__.py
@@ -516,6 +516,50 @@ class SpecFile(object):
         else:
             raise GbpError("Setting '%s:' tag not supported" % tagname)
 
+    def _delete_special_macro(self, name, identifier):
+        """Delete a special macro line in spec file content"""
+        if name != 'patch':
+            raise GbpError("Deleting '%s:' macro not supported" % name)
+
+        key = name.lower()
+        fullname = '%%%s%s' % (name, identifier)
+        sparedlines = []
+        prev = None
+        for line in self._special_directives[key]:
+            if line['id'] == identifier:
+                gbp.log.debug("Removing '%s' macro from spec" % fullname)
+                prev = self._content.delete(line['line'])
+            else:
+                sparedlines.append(line)
+        self._special_directives[key] = sparedlines
+        if not prev:
+            gbp.log.warn("Tried to delete non-existent macro '%s'" % fullname)
+        return prev
+
+    def _set_special_macro(self, name, identifier, args, insertafter):
+        """Update a special macro line in spec file content"""
+        key = name.lower()
+        fullname = '%%%s%s' % (name, identifier)
+        if key != 'patch':
+            raise GbpError("Setting '%s' macro not supported" % name)
+
+        updated = 0
+        text = "%%%s%d %s\n" % (name, identifier, args)
+        for line in self._special_directives[key]:
+            if line['id'] == identifier:
+                gbp.log.debug("Updating '%s' macro in spec" % fullname)
+                line['args'] = args
+                line['line'].set_data(text)
+                ret = line['line']
+                updated += 1
+        if not updated:
+            gbp.log.debug("Adding '%s' macro after '%s...' line in spec" %
+                          (fullname, str(insertafter)[0:20]))
+            ret = self._content.insert_after(insertafter, text)
+            linerec = {'line': ret, 'id': identifier, 'args': args}
+            self._special_directives[key].append(linerec)
+        return ret
+
     def update_patches(self, patchfilenames):
         """Update spec with new patch tags and patch macros"""
         # Remove non-ignored patches
diff --git a/tests/test_rpm.py b/tests/test_rpm.py
index 88eb571f..ec2c834a 100644
--- a/tests/test_rpm.py
+++ b/tests/test_rpm.py
@@ -197,8 +197,8 @@ class TestSpecFile(object):
         prev = spec.protected('_delete_tag')('Vendor', None)
         spec.protected('_set_tag')('License', None, 'new license', prev)
         spec.protected('_delete_tag')('source', 0)
+        spec.protected('_delete_tag')('patch', 1)
         spec.protected('_delete_tag')('patch', 0)
-        spec.protected('_delete_tag')('patch', -1)
         prev = spec.protected('_delete_tag')('invalidtag', None)
 
         with assert_raises(GbpError):
@@ -208,6 +208,16 @@ class TestSpecFile(object):
             # Check that setting invalid tag with public method fails
             spec.set_tag('invalidtag', None, 'value')
 
+        # Mangle macros
+        prev = spec.protected('_delete_special_macro')('patch', 0)
+        spec.protected('_delete_special_macro')('patch', 123)
+        spec.protected('_set_special_macro')('patch', 1, 'my new args', prev)
+        with assert_raises(GbpError):
+            spec.protected('_delete_special_macro')('invalidmacro', 0)
+        with assert_raises(GbpError):
+            spec.protected('_set_special_macro')('invalidmacro', 0, 'args',
+                           prev)
+
         # Check resulting spec file
         spec.write_spec_file()
         assert filecmp.cmp(tmp_spec, reference_spec) is True
diff --git a/tests/test_rpm_data/specs/gbp-test-updates-reference.spec b/tests/test_rpm_data/specs/gbp-test-updates-reference.spec
index 557f8b77..e6e6846c 100644
--- a/tests/test_rpm_data/specs/gbp-test-updates-reference.spec
+++ b/tests/test_rpm_data/specs/gbp-test-updates-reference.spec
@@ -33,6 +33,9 @@ Collections:    my_collections
 Package for testing GBP.
 
 %prep
+%setup -n my_prefix
+
+%patch1 my new args
 
 %build
 
diff --git a/tests/test_rpm_data/specs/gbp-test-updates.spec b/tests/test_rpm_data/specs/gbp-test-updates.spec
index 1cdcb212..19912442 100644
--- a/tests/test_rpm_data/specs/gbp-test-updates.spec
+++ b/tests/test_rpm_data/specs/gbp-test-updates.spec
@@ -18,7 +18,7 @@ Url:            my_url
 Vcs:            my_vcs
 Source:         my_source
 Patch:          my_%patch_fn_base
-Patch0:         my_%{patch_fn_base}0
+Patch1:         my_%{patch_fn_base}1
 BuildRoot:      my_buildroot
 Provides:       my_provides
 Requires:       my_requires
@@ -37,6 +37,10 @@ Collections:    my_collections
 Package for testing GBP.
 
 %prep
+%setup -n my_prefix
+
+%patch -b my_patch
+%patch -P1 -b my_patch0
 
 %build
 
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