Pre- and post-commit hooks to autogenerate docs and create tag from Podspec version label when committing on release branch

post-commit

#!/usr/local/bin/python3

import semver_compare
import subprocess

podspec = subprocess.check_output("ls -1 *.podspec | head -1", shell=True).decode().strip()
new_tag = semver_compare.check_file(podspec, branches=["release"], verbose=True)
if new_tag:
    print(f"Creating tag {new_tag}")
    subprocess.run(["git", "tag", new_tag])

pre-commit

#!/usr/local/bin/python3

import semver_compare
import subprocess

podspec = subprocess.check_output("ls -1 docs/index.html | head -1", shell=True).decode().strip()
new_tag = semver_compare.check_file(podspec, template='IIDadata\s+%s\s+Docs', verbose=False)
if not new_tag:
    subprocess.run(["bundle", "exec", "jazzy --min-acl public"])
    subprocess.run(["git", "add", "docs/"])

semver_compare.py

#!/usr/local/bin/python3

import re
import sys
import subprocess

branch = subprocess.check_output("git rev-parse --abbrev-ref HEAD", shell=True).decode().strip()
tag = subprocess.check_output("git tag -l --sort='-v:refname' | head -1", shell=True).decode().strip()
semver_regex = r"(?P<full_semver>(?P<major>0|[1-9]\d*)\.(?P<minor>0|[1-9]\d*)\.(?P<patch>0|[1-9]\d*)(?:-(?P<prerelease>(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\.(?:0|[1-9]\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\+(?P<buildmetadata>[0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?)"

def check_file(filename, branches=None, template='version\s+=\s+\'%s\'\s*$', verbose=False):
    if branches and branch not in branches:
        return
    git_tag_matches = re.search(f"^{semver_regex}$", tag, re.MULTILINE)
    with open(filename,"r") as file:
        new_regex = template % semver_regex
        for l in file:
            podspec_matches = re.search(new_regex, l, re.MULTILINE)
            if podspec_matches and len(podspec_matches.groups()) > 0:
                if _should_retag(git_tag_matches, podspec_matches, verbose=verbose):
                    return podspec_matches.group('full_semver')

def _should_retag(git_match, spec_match, verbose=False):
    if git_match.group('full_semver') == spec_match.group('full_semver'):
        print(f"Pod version: {git_match.group('full_semver')}")
        return False
    if verbose:
        print(f"Have {git_match.group('full_semver')} in git tag")
        print(f"Have {spec_match.group('full_semver')} in podspec ver")
    if _part_newer(git_match.group('major'), spec_match.group('major')):
        if verbose:
            print("Major version is newer") 
        return True
    if _part_older(git_match.group('major'), spec_match.group('major')):
        if verbose:
            print("Major version is older") 
            print('Please check correctness of podspec version label!')
        return False
    if _part_newer(git_match.group('minor'), spec_match.group('minor')):
        if verbose:
            print("Minor version is newer") 
        return True
    if _part_older(git_match.group('minor'), spec_match.group('minor')):
        if verbose:
            print("Minor version is older") 
            print('Please check correctness of podspec version label!')
        return False
    if _part_newer(git_match.group('patch'), spec_match.group('patch')):
        if verbose:
            print("Patch version is newer") 
        return True
    if _part_older(git_match.group('patch'), spec_match.group('patch')):
        if verbose:
            print("Patch version is older") 
            print('Please check correctness of podspec version label!')
        return False
    if git_match.group('prerelease') != spec_match.group('prerelease'): 
        if git_match.group('prerelease') == None:
            if verbose:
                print("Pre-release version couldn't be set after release")
                print('Consider setting build metadata instead')
            return False
        if spec_match.group('prerelease') == None:
            if verbose:
                print("Altered to release version") 
            return True
        if verbose:
            print("Pre-release version altered") 
        return True
    if git_match.group('buildmetadata') != spec_match.group('buildmetadata'):
        if verbose:
            print("Build metadata altered") 
        return True
    if verbose:
        print('Please check correctness of podspec version label!')
    return False

def _part_newer(gitp, specp):
    if specp > gitp:
        return True
    return False

def _part_older(gitp, specp):
    if specp < gitp:
        return True
    return False