Add changelog argument options

commitizen/commands/changelog.py

@@ -29,11 +29,15 @@ def __init__(self, config: BaseConfig, args):
         self.config: BaseConfig = config
         self.cz = factory.commiter_factory(self.config)
 
-        self.start_rev = args.get("start_rev")
+        self.start_rev = args.get("start_rev") or self.config.settings.get(
+            "changelog_start_rev"
+        )
         self.file_name = args.get("file_name") or self.config.settings.get(
             "changelog_file"
         )
-        self.incremental = args["incremental"]
+        self.incremental = args["incremental"] or self.config.settings.get(
+            "changelog_incremental"
+        )
         self.dry_run = args["dry_run"]
         self.unreleased_version = args["unreleased_version"]
         self.change_type_map = (

commitizen/defaults.py

@@ -11,6 +11,8 @@
     "tag_format": None,  # example v$version
     "bump_message": None,  # bumped v$current_version to $new_version
     "changelog_file": "CHANGELOG.md",
+    "changelog_incremental": False,
+    "changelog_start_rev": None,
 }
 
 MAJOR = "MAJOR"

docs/changelog.md

@@ -114,6 +114,8 @@ cz changelog --file-name="CHANGES.md"
 
 ### `incremental`
 
+This flag can be set in the `toml` file with the key `changelog_incremental` under `tools.commitizen`
+
 Benefits:
 
 - Build from latest version found in changelog, this is useful if you have a different changelog and want to use commitizen
@@ -124,6 +126,28 @@ Benefits:
 cz changelog --incremental
 ```
 
+```toml
+[tools.commitizen]
+# ...
+changelog_incremental = true
+```
+
+### `start-rev`
+
+This value can be set in the `toml` file with the key `changelog_start_rev` under `tools.commitizen`
+
+Start from a given git rev to generate the changelog. Commits before that rev will not be considered. This is especially useful for long-running projects adopting conventional commits, where old commit messages might fail to be parsed for changelog generation.
+
+```bash
+cz changelog --start-rev="v0.2.0"
+```
+
+```toml
+[tools.commitizen]
+# ...
+changelog_start_rev = "v0.2.0"
+```
+
 ## Hooks
 
 Supported hook methods:

tests/commands/test_changelog_command.py

@@ -20,6 +20,11 @@ def changelog_path() -> str:
     return os.path.join(os.getcwd(), "CHANGELOG.md")
 
 
+@pytest.fixture()
+def config_path() -> str:
+    return os.path.join(os.getcwd(), "pyproject.toml")
+
+
 @pytest.mark.usefixtures("tmp_commitizen_project")
 def test_changelog_on_empty_project(mocker):
     testargs = ["cz", "changelog", "--dry-run"]
@@ -389,3 +394,48 @@ def test_breaking_change_content_v1(mocker, capsys):
         "## Unreleased\n\n### Feat\n\n- **users**: email pattern corrected\n\n"
         "### BREAKING CHANGE\n\n- migrate by renaming user to users\n\n"
     )
+
+
+@pytest.mark.usefixtures("tmp_commitizen_project")
+def test_changelog_config_flag_increment(mocker, changelog_path, config_path):
+
+    with open(config_path, "a") as f:
+        f.write("changelog_incremental = true\n")
+    with open(changelog_path, "a") as f:
+        f.write("\nnote: this should be persisted using increment\n")
+
+    create_file_and_commit("feat: add new output")
+
+    testargs = ["cz", "changelog"]
+    mocker.patch.object(sys, "argv", testargs)
+    cli.main()
+
+    with open(changelog_path, "r") as f:
+        out = f.read()
+
+    assert "this should be persisted using increment" in out
+
+
+@pytest.mark.usefixtures("tmp_commitizen_project")
+def test_changelog_config_start_rev_option(mocker, capsys, config_path):
+
+    # create commit and tag
+    create_file_and_commit("feat: new file")
+    testargs = ["cz", "bump", "--yes"]
+    mocker.patch.object(sys, "argv", testargs)
+    cli.main()
+    capsys.readouterr()
+
+    create_file_and_commit("feat: after 0.2.0")
+    create_file_and_commit("feat: after 0.2")
+
+    with open(config_path, "a") as f:
+        f.write('changelog_start_rev = "0.2.0"\n')
+
+    testargs = ["cz", "changelog", "--dry-run"]
+    mocker.patch.object(sys, "argv", testargs)
+    with pytest.raises(DryRunExit):
+        cli.main()
+
+    out, _ = capsys.readouterr()
+    assert out == "## Unreleased\n\n### Feat\n\n- after 0.2\n- after 0.2.0\n\n"

tests/test_conf.py

@@ -32,6 +32,8 @@
     "version_files": ["commitizen/__version__.py", "pyproject.toml"],
     "style": [["pointer", "reverse"], ["question", "underline"]],
     "changelog_file": "CHANGELOG.md",
+    "changelog_incremental": False,
+    "changelog_start_rev": None,
 }
 
 _new_settings = {
@@ -42,6 +44,8 @@
     "version_files": ["commitizen/__version__.py", "pyproject.toml"],
     "style": [["pointer", "reverse"], ["question", "underline"]],
     "changelog_file": "CHANGELOG.md",
+    "changelog_incremental": False,
+    "changelog_start_rev": None,
 }
 
 _read_settings = {