From 7382a6b60efcfeb09c80d227574969cbb4577237 Mon Sep 17 00:00:00 2001
From: Filip Noetzel <filip@j03.de>
Date: Thu, 27 Mar 2014 13:45:50 +0100
Subject: [PATCH] Allow numeric part configs to have a first_value

---
 bumpversion/__init__.py | 22 ++++++++++++++++++----
 tests.py                | 19 +++++++++++++++++++
 2 files changed, 37 insertions(+), 4 deletions(-)

diff --git a/bumpversion/__init__.py b/bumpversion/__init__.py
index 1544308..e9f4ce4 100644
--- a/bumpversion/__init__.py
+++ b/bumpversion/__init__.py
@@ -187,7 +187,7 @@ class VersionPartConfiguration(object):
 
 class ConfiguredVersionPartConfiguration(object):
 
-    def __init__(self, values, optional_value=None):
+    def __init__(self, values, optional_value=None, first_value=None):
 
         assert len(values) > 0
 
@@ -196,19 +196,29 @@ def __init__(self, values, optional_value=None):
         if optional_value is None:
             optional_value = values[0]
 
-        self.first_value = values[0]
         self.optional_value = optional_value
 
+        if first_value is None:
+            first_value = values[0]
+
+        self.first_value = first_value
+
     def bump(self, value):
         return self._values[self._values.index(value)+1]
 
 class NumericVersionPartConfiguration(VersionPartConfiguration):
 
     optional_value = "0"
-    first_value = "0"
 
     FIRST_NUMERIC = re.compile('([^\d]*)(\d+)(.*)')
 
+    def __init__(self, first_value=None):
+
+        if first_value is None:
+            first_value = "0"
+
+        self.first_value = first_value
+
     @classmethod
     def bump(cls, value):
         part_prefix, numeric_version, part_suffix = cls.FIRST_NUMERIC.search(value).groups()
@@ -537,10 +547,14 @@ def main(original_args=None):
         for section_name in config.sections():
             if section_name.startswith("bumpversion:part"):
                 part_config = dict(config.items(section_name))
+
+                ThisVersionPartConfiguration = NumericVersionPartConfiguration
+
                 if 'values' in part_config:
                     part_config['values'] = list(filter(None, (x.strip() for x in part_config['values'].splitlines())))
+                    ThisVersionPartConfiguration = ConfiguredVersionPartConfiguration
 
-                part_configs[section_name.split(":", 2)[2]] = ConfiguredVersionPartConfiguration(**part_config)
+                part_configs[section_name.split(":", 2)[2]] = ThisVersionPartConfiguration(**part_config)
 
     else:
         message = "Could not read config file at {}".format(known_args.config_file)
diff --git a/tests.py b/tests.py
index 208061b..ded3dd8 100644
--- a/tests.py
+++ b/tests.py
@@ -1247,3 +1247,22 @@ def file_content():
 
     main(['minor', '--verbose'])
     assert '1.1dev' == file_content()
+
+def test_part_first_value(tmpdir):
+
+    tmpdir.join("the_version.txt").write("0.9.4")
+    tmpdir.chdir()
+
+    tmpdir.join(".bumpversion.cfg").write(dedent("""
+        [bumpversion]
+        files = the_version.txt
+        current_version = 0.9.4
+
+        [bumpversion:part:minor]
+        first_value = 1
+        """))
+
+    main(['major', '--verbose'])
+
+    assert '1.1.0' == tmpdir.join("the_version.txt").read()
+