From 216de8e4271f9dbca1f009e8c0e046a7f5a198fd Mon Sep 17 00:00:00 2001
From: Igor Gnatenko <ignatenkobrain@fedoraproject.org>
Date: Wed, 15 May 2019 08:01:46 +0200
Subject: [PATCH 08/14] Mangle summary automagically

Signed-off-by: Igor Gnatenko <ignatenkobrain@fedoraproject.org>
---
 rust2rpm/metadata.py         | 35 ++++++++++++++++++++++++++++++++++-
 rust2rpm/templates/main.spec |  3 +--
 2 files changed, 35 insertions(+), 3 deletions(-)

diff --git a/rust2rpm/metadata.py b/rust2rpm/metadata.py
index 77c2932..e41902d 100644
--- a/rust2rpm/metadata.py
+++ b/rust2rpm/metadata.py
@@ -3,6 +3,7 @@ __all__ = ["Dependency", "Metadata"]
 import collections
 import copy
 import json
+import re
 import subprocess
 
 import semantic_version as semver
@@ -116,11 +117,43 @@ class Metadata:
         self.license = None
         self.license_file = None
         self.readme = None
-        self.description = None
+        self._description = None
+        self._summary = None
         self.targets = set()
         self.dependencies = {}
         self.dev_dependencies = set()
 
+    @property
+    def description(self):
+        return self._description
+
+    @property
+    def summary(self):
+        return self._summary
+
+    @description.setter
+    def description(self, description):
+        # https://salsa.debian.org/rust-team/debcargo/blob/master/src/crates.rs
+        # get_summary_description()
+        if description is None:
+            self._description = self._summary = None
+            return
+        description = description.replace('\n\n', '\r').replace('\n', ' ').replace('\r', '\n').strip()
+        description = re.sub(r'^(?:a|an|the)\s+', '', description, flags=re.I)
+        description = f'{description[0].upper()}{description[1:]}'
+        if description[-1] != '.':
+            description = f'{description}.'
+
+        p1 = description.find('.')
+        p2 = description.find('\n')
+        if p2 != -1:
+            p = min(p1, p2)
+        else:
+            p = p1
+
+        self._description = description
+        self._summary = description[:p]
+
     @classmethod
     def from_json(cls, metadata):
         md = metadata
diff --git a/rust2rpm/templates/main.spec b/rust2rpm/templates/main.spec
index 0ef0b10..803b74e 100644
--- a/rust2rpm/templates/main.spec
+++ b/rust2rpm/templates/main.spec
@@ -16,8 +16,7 @@ Release:        {{ pkg_release }}
 {% if md.description is none %}
 Summary:        # FIXME
 {% else %}
-{% set description_lines = md.description.split("\n") %}
-Summary:        {{ description_lines|join(" ")|trim }}
+Summary:        {{ md.summary }}
 {% endif %}
 {% if rust_group is defined %}
 Group:          {{ rust_group }}
-- 
2.22.0.rc3