add debian changelog output

generator/cli.py

@@ -24,6 +24,8 @@ def main():
     group = parser.add_mutually_exclusive_group(required=True)
     group.add_argument('--html', action='store_const', const="html", dest="output", help="output as HTML")
     group.add_argument('--markdown', action='store_const', const="markdown", dest="output", help="output as markdown")
+    group.add_argument('--debian-changelog', action='store_const', const="debianchangelog", dest="output",
+                       help="output as debian changelog file")
 
     args = parser.parse_args()
-    generate_changelog(args.since, args.output,args.previous_version)
+    generate_changelog(args.since, args.output, args.previous_version)

generator/formatters/__init__.py

@@ -1,3 +1,4 @@
 from .base import BaseFormatter
+from .debianchangelog import DebianChangelogFormatter
 from .html import HTMLFormatter
 from .markdown import MarkdownFormatter

generator/formatters/debianchangelog.py

@@ -0,0 +1,22 @@
+import textwrap
+
+from generator.formatters import BaseFormatter
+
+
+class DebianChangelogFormatter(BaseFormatter):
+    def __str__(self) -> str:
+        text = ""
+        for repo in self.repos:
+            if repo.issues:
+                if len(self.repos) > 1:
+                    text += "\n  [ {} ]\n".format(repo.path)
+                for issue in repo.issues:
+                    line = ""
+                    line += "  * {title}".format(title=issue.title)
+                    if issue.authors:
+                        line += " [by {}] ".format(
+                            ", ".join("@" + author.username for author in issue.authors)
+                        )
+                    line += "(Closes: #{})\n".format(issue.number)
+                    text += textwrap.fill(line, 75, subsequent_indent=" " * 4) + "\n"
+        return text

generator/generator.py

@@ -2,7 +2,7 @@ from datetime import datetime
 from typing import List
 
 from generator import GithubAPI, config, Issue, Repo
-from generator.formatters import HTMLFormatter, MarkdownFormatter
+from generator.formatters import HTMLFormatter, MarkdownFormatter, DebianChangelogFormatter
 
 api = GithubAPI(token=config.api_token)
 
@@ -63,6 +63,8 @@ def generate_changelog(since: datetime, output_format, previous_version):
         print(HTMLFormatter(repos))
     elif output_format == "markdown":
         print(MarkdownFormatter(repos))
+    elif output_format == "debianchangelog":
+        print(DebianChangelogFormatter(repos))
     else:
         raise ValueError()
     generate_statistics(repos)