feat: Add CLI, various improvements, renamed to rsw.py

rsw.py

@@ -1,6 +1,48 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 # -*- coding: utf-8 -*-
 
+# reStructuredWeb (rSW, reSW or rstW) -- static site generator.
+# Copyright (c) 2022 ge https://nixnahcks.net/resw/
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+"""reSW static site generator.
+
+Usage: rsw init [--no-makefile] [<name>]
+       rsw build [-c <file>]
+       rsw print [-c <file>] [--default] [--json]
+       rsw (-h | --help | -v | --version)
+
+Commands:
+  init          initialise new site.
+  build         build site.
+  print         print configuration.
+
+Options:
+  -c <file>, --config <file>    configuaration file.
+  -j, --json                    JSON output.
+  -d, --default                 print default config.
+  -M, --no-makefile             do not create Makefile.
+  -h, --help                    print this help message and exit.
+  -v, --version                 print version and exit.
+
+Copyright (C) 2022 ge <http://nixhacks.net/resw/>.
+License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
+This is free software: you are free to change and redistribute it.
+There is NO WARRANTY, to the extent permitted by law.
+"""
+
 __version__ = '0.1.0'
 
 import os
@@ -8,9 +50,11 @@ import sys
 import shutil
 import datetime
 import logging
+
 import toml
 import jinja2
 import colorlog
+import docopt
 
 from typing import List
 from collections import namedtuple
@@ -28,69 +72,73 @@ from pygments.formatters import HtmlFormatter
 # Setup logger.                                                 #
 # ------------------------------------------------------------- #
 
-LOGFORMAT = "  %(log_color)s%(levelname)-8s%(reset)s \
+LOGFORMAT = '%(log_color)s%(levelname)-8s%(reset)s \
-%(log_color)s%(message)s%(reset)s"
+%(log_color)s%(message)s%(reset)s'
 log = logging.getLogger('reStructuredWeb')
 log.setLevel(logging.INFO)
 handler = logging.StreamHandler(stream=sys.stdout)
-handler.setFormatter(
+handler.setFormatter(colorlog.ColoredFormatter(LOGFORMAT))
-    colorlog.ColoredFormatter(LOGFORMAT))
 log.addHandler(handler)
 
 # ------------------------------------------------------------- #
 # Configuration.                                                #
 # ------------------------------------------------------------- #
 
-# Set defaults
+CONFIG_FILE = 'settings.toml'
-BUILD_DEFAULTS = {
+DEFAULT_CONFIG = {
+    'defaults': {
+        'template': 'template.jinja2',
+        'type': 'page',
+    },
+    'dirs': {
         'build_dir': 'build',
         'content_dir': 'content',
         'templates_dir': 'layouts',
-    'static_dir': 'static'
+        'static_dir': 'static',
+    },
+    'site': {
+        'datetime_format': '%Y-%m-%d',
+    },
+    'pygments': {
+        'theme': 'default',
+    },
+    'docutils': {},
 }
-SITE_DEFAULTS = {'datetime_format': '%Y-%m-%d'}
-PYGMENTS_DEFAULTS = {'theme': 'default'}
-DOCUTILS_DEFAULTS = {}
 
-# Read configuration file
+def merge_dicts(a: dict, b: dict, path = None) -> dict:
-try:
+    """Merge b into a. Return modified a.
-    with open('settings.toml', 'r') as file:
+    Ref: https://stackoverflow.com/a/7205107
-        settings = toml.loads(file.read())
+    """
-except OSError as err:
+    if path is None: path = []
-    log.error('Cannot open \'settings.toml\'. ' +
+    for key in b:
-        'Is the file actually in the current directory?')
+        if key in a:
+            if isinstance(a[key], dict) and isinstance(b[key], dict):
+                merge_dicts(a[key], b[key], path + [str(key)])
+            elif a[key] == b[key]:
+                pass  # same leaf value
+            else:
+                a[key] = b[key]  # replace existing key's values
+        else:
+            a[key] = b[key]
+    return a
 
-# Fallback to default settings
+def load_config(config_file: str = CONFIG_FILE):
-
+    """Load configuration file and fallback to default config."""
-# `build` section
-for dir in list(BUILD_DEFAULTS.keys()):
     try:
-        settings['build'][dir]
+        with open(config_file, 'r') as file:
-    except KeyError:
+            config = toml.loads(file.read())
-        settings['build'][dir] = BUILD_DEFAULTS[dir]
+    except OSError as err:
+        log.error("Cannot load configuration from '{}': {}".format(
+            config_file, err))
+        sys.exit(1)
+    return merge_dicts(DEFAULT_CONFIG, config)
 
-# `site` section
+def load_config_wrapper(args: dict) -> dict:
-try:
+    if args['--config']:
-    settings['site']['datetime_format']
+        config = load_config(config_file = args['--config'])
-except KeyError:
+    else:
-    settings['site']['datetime_format'] = \
+        config = load_config()
-        SITE_DEFAULTS['datetime_format']
+    return config
-
-# `pygments` section
-try:
-    settings['pygments']['theme']
-except KeyError:
-    try:
-        settings['pygments']
-    except KeyError:
-        settings['pygments'] = {}
-    settings['pygments']['theme'] = PYGMENTS_DEFAULTS['theme']
-
-# `docutils` section
-try:
-    settings['docutils']
-except KeyError:
-    settings['docutils'] = DOCUTILS_DEFAULTS
 
 # ------------------------------------------------------------- #
 # Parse docinfo from rST files.                                 #
@@ -132,6 +180,8 @@ def parsedocinfo(data: str) -> dict:
 # Extra reStructuredText directives and roles                   #
 # ------------------------------------------------------------- #
 
+# DIRECTIVES
+
 # Pygments reST `code-block` directive.
 # Source: https://docutils.sourceforge.io/sandbox/code-block-directive/
 # `code-block` BEGIN
@@ -172,14 +222,14 @@ def render_template(template: str, templates_dir = '.', **kwargs) -> str:
 # Render HTML from reStructuredText.                            #
 # ------------------------------------------------------------- #
 
-def render_html_body(text: str) -> str:
+def render_html_body(config: dict, text: str) -> str:
     """Return HTML body converted from reStructuredText.
     See:
         * help(docutils.core.publish_parts)
         * https://docutils.sourceforge.io/docs/user/config.html
     """
     html = publish_parts(source = text, writer = html5_polyglot.Writer(),
-        settings_overrides = settings['docutils']
+        settings_overrides = config['docutils']
     )
     return html['body']
 
@@ -211,7 +261,7 @@ def copy_files(source_dir: str, destination_dir: str):
 # Build site!                                                   #
 # ------------------------------------------------------------- #
 
-def aggregate_lists(file_list: list) -> dict:
+def aggregate_lists(config: dict, file_list: list) -> dict:
     posts = []
     pages = []
     for rst_file in file_list:
@@ -221,7 +271,7 @@ def aggregate_lists(file_list: list) -> dict:
         # Validate date format
         try:
             dt = datetime.datetime.strptime(docinfo['date'],
-                settings['site']['datetime_format'])
+                config['site']['datetime_format'])
         except (KeyError, ValueError) as err:
             log.error('Wrong formatted or missing date in file' +
                 '\'{}\': {}'.format(rst_file, err))
@@ -229,64 +279,68 @@ def aggregate_lists(file_list: list) -> dict:
         # Add path ot file
         docinfo['path'] = '/' + os.path.relpath(
             os.path.splitext(rst_file)[0] + '.html',
-            settings['build']['content_dir'])
+            config['dirs']['content_dir'])
         try:
             if docinfo['type'] == 'post':
                 posts.append(docinfo)
             else:
                 pages.append(docinfo)
         except KeyError:
-            pages.append(docinfo)  # may 'default_article_type'
+            if config['defaults']['type'] == 'post':
+                posts.append(docinfo)
+            else:
+                pages.append(docinfo)
 
     # Sort posts by date (newest in top)
     posts.sort(key=lambda date: datetime.datetime.strptime(date['date'],
-        settings['site']['datetime_format']), reverse = True)
+        config['site']['datetime_format']), reverse = True)
 
     return {'posts': posts, 'pages': pages}
 
-def build_site():
+def build(config: dict):
+    """Build site."""
     # Prepare build directory
-    os.makedirs(settings['build']['build_dir'], exist_ok = True)
+    os.makedirs(config['dirs']['build_dir'], exist_ok = True)
 
     log.info('Collecting data ...')
-    rst_files = find_rst_files(settings['build']['content_dir'])
+    rst_files = find_rst_files(config['dirs']['content_dir'])
-    lists = aggregate_lists(rst_files)
+    lists = aggregate_lists(config, rst_files)
 
     for rst_file in rst_files:
         with open(rst_file, 'r', encoding = 'utf-8') as rst:
             source = rst.read()
 
         log.info('Parsing docinfo: %s' % rst_file)
-        page_meta = parsedocinfo(source)
+        page_docinfo = parsedocinfo(source)
 
         # Render HTML files
-        html_file_path = os.path.join(settings['build']['build_dir'],
+        html_file_path = os.path.join(config['dirs']['build_dir'],
             os.path.relpath(os.path.splitext(rst_file)[0] + '.html',
-            settings['build']['content_dir']))
+            config['dirs']['content_dir']))
 
         log.info('Rendering page: %s' % html_file_path)
 
-        # Page template from docinfo
+        # Get page template from docinfo
         try:
-            template = page_meta['template']
+            template = page_docinfo['template']
             if not os.path.exists(os.path.join(
-                settings['build']['templates_dir'], template)):
+                config['dirs']['templates_dir'], template)):
                 log.error('{}: Template does not exist: {}'.format(
                     rst_file, template))
                 sys.exit(1)
         except KeyError:
-            template = settings['build']['default_template']
+            template = config['defaults']['template']
 
         # Render HTML
-        html_body = render_html_body(source)
+        html_body = render_html_body(config, source)
 
         # Render template
         html_page = render_template(
             template,
-            templates_dir = settings['build']['templates_dir'],
+            templates_dir = config['dirs']['templates_dir'],
-            pygments_theme = settings['pygments']['theme'],
+            pygments_theme = config['pygments']['theme'],
-            site = settings['site'],
+            site = config['site'],
-            page = page_meta,
+            page = page_docinfo,
             aggr = lists,
             html = html_body
         )
@@ -296,17 +350,75 @@ def build_site():
         write_to_file(html_file_path, html_page)
 
     # Copy additional files to build_dir
-    log.info('Copy static files from {}, {} to {}'.format(
+    log.info("Copy static files from '{}' and '{}' to '{}'".format(
-        settings['build']['static_dir'],
+        config['dirs']['static_dir'],
-        settings['build']['content_dir'],
+        config['dirs']['content_dir'],
-        settings['build']['build_dir']))
+        config['dirs']['build_dir']))
 
-    copy_files(settings['build']['static_dir'],
+    copy_files(config['dirs']['static_dir'], config['dirs']['build_dir'])
-        settings['build']['build_dir'])
+    copy_files(config['dirs']['content_dir'], config['dirs']['build_dir'])
-    copy_files(settings['build']['content_dir'],
-        settings['build']['build_dir'])
 
     log.info('Success')
 
+# ------------------------------------------------------------- #
+# Command Line Interface.                                       #
+# ------------------------------------------------------------- #
+
+def init(dirname: str = '.', no_makefile: bool = False):
+    """Initialise new site."""
+    # Make site dirs
+    for dir in list(DEFAULT_CONFIG['dirs'].keys()):
+        if dir == 'build_dir':
+            pass
+        else:
+            os.makedirs(os.path.join(dirname,
+                DEFAULT_CONFIG['dirs'][dir]), exist_ok = True)
+
+    # Make Makefile
+    if not no_makefile:
+        makefile = render_template('Makefile.jinja2',
+            content_dir = DEFAULT_CONFIG['dirs']['content_dir'],
+            static_dir = DEFAULT_CONFIG['dirs']['static_dir'],
+            build_dir = DEFAULT_CONFIG['dirs']['build_dir'],
+            config = CONFIG_FILE
+        )
+        write_to_file(os.path.join(dirname, 'Makefile'), makefile)
+
+    # Make configuration file
+    settings = toml.dumps(DEFAULT_CONFIG)
+    write_to_file(os.path.join(dirname, CONFIG_FILE), settings)
+
+    # Make .gitignore
+    gitignore = 'build/'  # file content
+    write_to_file(os.path.join(dirname, '.gitignore'), gitignore)
+
+    log.info("Site initialised in '%s'" % dirname)
+
+def print_config(config: dict, args: dict):
+    if args['--json']:
+        import json
+        print(json.dumps(config, indent = 2))
+    else:
+        import pprint
+        pprint.pprint(config)
+
+def cli():
+    args = docopt.docopt(__doc__, version = __version__)
+
+    if args['init']:
+        if args['<name>']:
+            init(dirname = args['<name>'], no_makefile = args['--no-makefile'])
+        else:
+            init(dirname = os.getcwd(), no_makefile = args['--no-makefile'])
+    elif args['build']:
+        build(config = load_config_wrapper(args))
+    elif args['print']:
+        if args['--default']:
+            print_config(DEFAULT_CONFIG, args)
+        else:
+            print_config(load_config_wrapper(args), args)
+    else:
+        pass
+
 if __name__ == '__main__':
-    build_site()
+    cli()