MNT: Add tool for generating GitHub-friendly release notes from RST changelog

Changelog

@@ -36,15 +36,15 @@ tested up to Python 3.12 and NumPy 1.26.
 New features
 ------------
 * Add generic :class:`~nibabel.pointset.Pointset` and regularly spaced
-  :class:`~nibabel.pointset.NDGrid` data structures in preparation for coordinate
+  :class:`~nibabel.pointset.Grid` data structures in preparation for coordinate
   transformation and resampling (pr/1251) (CM, reviewed by Oscar Esteban)
 
 Enhancements
 ------------
 * Add :meth:`~nibabel.arrayproxy.ArrayProxy.copy` method to
   :class:`~nibabel.arrayproxy.ArrayProxy` (pr/1255) (CM, reviewed by Paul McCarthy)
 * Permit :meth:`~nibabel.xmlutils.XmlSerializable.to_xml` to pass keyword
-  arguments to :meth:`~xml.etree.ElementTree.ElementTree.tostring` (pr/1258)
+  arguments to :meth:`~xml.etree.ElementTree.tostring` (pr/1258)
   (CM)
 * Allow user expansion (e.g., ``~/...``) in strings passed to functions that
   accept paths (pr/1260) (Reinder Vos de Wael, reviewed by CM)
@@ -54,7 +54,7 @@ Enhancements
   ``affine=None`` argument (pr/1253) (Blake Dewey, reviewed by CM)
 * Warn on invalid MINC2 spacing declarations, treat as missing (pr/1237)
   (Peter Suter, reviewed by CM)
-* Refactor :func:`~nibabel.nicom.utils.find_private_element` for improved
+* Refactor :func:`~nibabel.nicom.utils.find_private_section` for improved
   readability and maintainability (pr/1228) (MB, reviewed by CM)
 
 Bug fixes

tools/markdown_release_notes.py

@@ -0,0 +1,94 @@
+#!/usr/bin/env python
+import re
+import sys
+from pathlib import Path
+
+CHANGELOG = Path(__file__).parent.parent / 'Changelog'
+
+# Match release lines like "5.2.0 (Monday 11 December 2023)"
+RELEASE_REGEX = re.compile(r"""((?:\d+)\.(?:\d+)\.(?:\d+)) \(\w+ \d{1,2} \w+ \d{4}\)$""")
+
+
+def main():
+    version = sys.argv[1]
+    output = sys.argv[2]
+    if output == '-':
+        output = sys.stdout
+    else:
+        output = open(output, 'w')
+
+    release_notes = []
+    in_release_notes = False
+
+    with open(CHANGELOG) as f:
+        for line in f:
+            match = RELEASE_REGEX.match(line)
+            if match:
+                if in_release_notes:
+                    break
+                in_release_notes = match.group(1) == version
+                next(f)   # Skip the underline
+                continue
+
+            if in_release_notes:
+                release_notes.append(line)
+
+    # Drop empty lines at start and end
+    while release_notes and not release_notes[0].strip():
+        release_notes.pop(0)
+    while release_notes and not release_notes[-1].strip():
+        release_notes.pop()
+
+    # Join lines
+    release_notes = ''.join(release_notes)
+
+    # Remove line breaks when they are followed by a space
+    release_notes = re.sub(r'\n +', ' ', release_notes)
+
+    # Replace pr/<number> with #<number> for GitHub
+    release_notes = re.sub(r'\(pr/(\d+)\)', r'(#\1)', release_notes)
+
+    # Replace :mod:`package.X` with [package.X](...)
+    release_notes = re.sub(
+        r':mod:`nibabel\.(.*)`',
+        r'[nibabel.\1](https://nipy.org/nibabel/reference/nibabel.\1.html)',
+        release_notes,
+    )
+    # Replace :class/func/attr:`package.module.X` with [package.module.X](...)
+    release_notes = re.sub(
+        r':(?:class|func|attr):`(nibabel\.\w*)(\.[\w.]*)?\.(\w+)`',
+        r'[\1\2.\3](https://nipy.org/nibabel/reference/\1.html#\1\2.\3)',
+        release_notes,
+    )
+    release_notes = re.sub(
+        r':(?:class|func|attr):`~(nibabel\.\w*)(\.[\w.]*)?\.(\w+)`',
+        r'[\3](https://nipy.org/nibabel/reference/\1.html#\1\2.\3)',
+        release_notes,
+    )
+    # Replace :meth:`package.module.class.X` with [package.module.class.X](...)
+    release_notes = re.sub(
+        r':meth:`(nibabel\.[\w.]*)\.(\w+)\.(\w+)`',
+        r'[\1.\2.\3](https://nipy.org/nibabel/reference/\1.html#\1.\2.\3)',
+        release_notes,
+    )
+    release_notes = re.sub(
+        r':meth:`~(nibabel\.[\w.]*)\.(\w+)\.(\w+)`',
+        r'[\3](https://nipy.org/nibabel/reference/\1.html#\1.\2.\3)',
+        release_notes,
+    )
+
+    def python_doc(match):
+        module = match.group(1)
+        name = match.group(2)
+        return f'[{name}](https://docs.python.org/3/library/{module.lower()}.html#{module}.{name})'
+
+    release_notes = re.sub(r':meth:`~([\w.]+)\.(\w+)`', python_doc, release_notes)
+
+    output.write('## Release notes\n\n')
+    output.write(release_notes)
+
+    output.close()
+
+
+if __name__ == '__main__':
+    main()

tox.ini

@@ -141,7 +141,8 @@ labels = check
 deps =
   flake8
   blue
-  isort[colors]
+  # Broken extras, remove when fix is released
+  isort[colors]!=5.13.1
 skip_install = true
 commands =
   blue --check --diff --color nibabel
@@ -153,7 +154,7 @@ description = Auto-apply style guide to the extent possible
 labels = pre-release
 deps =
   blue
-  isort[colors]
+  isort
 skip_install = true
 commands =
   blue nibabel