Merge pull request #185 from rgaiacs/178
[rnaseq-cwl-training.git] / bin / lesson_check.py
index b2f0308133396ddfbe5dedc2ba382d8f1ec4a9b4..8244222b5bd30e80516666d1dde76756c9c9300a 100755 (executable)
@@ -4,17 +4,17 @@
 Check lesson files and their contents.
 """
 
+from __future__ import print_function
 import sys
 import os
 import glob
 import json
-import yaml
 import re
 from optparse import OptionParser
 
-from util import Reporter, read_markdown
+from util import Reporter, read_markdown, load_yaml, check_unwanted_files, require, IMAGE_FILE_SUFFIX
 
-__version__ = '0.2'
+__version__ = '0.3'
 
 # Where to look for source Markdown files.
 SOURCE_DIRS = ['', '_episodes', '_extras']
@@ -41,6 +41,18 @@ REQUIRED_FILES = {
 # Episode filename pattern.
 P_EPISODE_FILENAME = re.compile(r'/_episodes/(\d\d)-[-\w]+.md$')
 
+# Pattern to match lines ending with whitespace.
+P_TRAILING_WHITESPACE = re.compile(r'\s+$')
+
+# Pattern to match figure references in HTML.
+P_FIGURE_REFS = re.compile(r'<img[^>]+src="([^"]+)"[^>]*>')
+
+# Pattern to match internally-defined Markdown links.
+P_INTERNAL_LINK_REF = re.compile(r'\[([^\]]+)\]\[([^\]]+)\]')
+
+# Pattern to match reference links (to resolve internally-defined references).
+P_INTERNAL_LINK_DEF = re.compile(r'^\[([^\]]+)\]:\s*(.+)')
+
 # What kinds of blockquotes are allowed?
 KNOWN_BLOCKQUOTES = {
     'callout',
@@ -62,13 +74,14 @@ KNOWN_CODEBLOCKS = {
     'source',
     'bash',
     'make',
+    'matlab',
     'python',
     'r',
     'sql'
 }
 
-# What fields are required in episode metadata?
-EPISODE_METADATA_FIELDS = {
+# What fields are required in teaching episode metadata?
+TEACHING_METADATA_FIELDS = {
     ('title', str),
     ('teaching', int),
     ('exercises', int),
@@ -77,6 +90,13 @@ EPISODE_METADATA_FIELDS = {
     ('keypoints', list)
 }
 
+# What fields are required in break episode metadata?
+BREAK_METADATA_FIELDS = {
+    ('layout', str),
+    ('title', str),
+    ('break', int)
+}
+
 # How long are lines allowed to be?
 MAX_LINE_LEN = 100
 
@@ -84,13 +104,18 @@ def main():
     """Main driver."""
 
     args = parse_args()
-    args.reporter = Reporter(args)
-    check_config(args)
-    docs = read_all_markdown(args, args.source_dir)
+    args.reporter = Reporter()
+    check_config(args.reporter, args.source_dir)
+    args.references = read_references(args.reporter, args.reference_path)
+
+    docs = read_all_markdown(args.source_dir, args.parser)
     check_fileset(args.source_dir, args.reporter, docs.keys())
+    check_unwanted_files(args.source_dir, args.reporter)
     for filename in docs.keys():
         checker = create_checker(args, filename, docs[filename])
         checker.check()
+    check_figures(args.source_dir, args.reporter)
+
     args.reporter.report()
 
 
@@ -100,16 +125,26 @@ def parse_args():
     parser = OptionParser()
     parser.add_option('-l', '--linelen',
                       default=False,
-                      dest='line_len',
+                      action="store_true",
+                      dest='line_lengths',
                       help='Check line lengths')
     parser.add_option('-p', '--parser',
                       default=None,
                       dest='parser',
                       help='path to Markdown parser')
+    parser.add_option('-r', '--references',
+                      default=None,
+                      dest='reference_path',
+                      help='path to Markdown file of external references')
     parser.add_option('-s', '--source',
                       default=os.curdir,
                       dest='source_dir',
                       help='source directory')
+    parser.add_option('-w', '--whitespace',
+                      default=False,
+                      action="store_true",
+                      dest='trailing_whitespace',
+                      help='Check for trailing whitespace')
 
     args, extras = parser.parse_args()
     require(args.parser is not None,
@@ -120,17 +155,53 @@ def parse_args():
     return args
 
 
-def check_config(args):
+def check_config(reporter, source_dir):
     """Check configuration file."""
 
-    config_file = os.path.join(args.source_dir, '_config.yml')
-    with open(config_file, 'r') as reader:
-        config = yaml.load(reader)
+    config_file = os.path.join(source_dir, '_config.yml')
+    config = load_yaml(config_file)
+    reporter.check_field(config_file, 'configuration', config, 'kind', 'lesson')
+    reporter.check_field(config_file, 'configuration', config, 'carpentry', ('swc', 'dc', 'lc'))
+    reporter.check_field(config_file, 'configuration', config, 'title')
+    reporter.check_field(config_file, 'configuration', config, 'contact')
 
-    args.reporter.check_field(config_file, 'configuration', config, 'kind', 'lesson')
+    reporter.check({'values': {'root': '..'}} in config.get('defaults', []),
+                   'configuration',
+                   '"root" not set to ".." in configuration')
 
 
-def read_all_markdown(args, source_dir):
+def read_references(reporter, ref_path):
+    """Read shared file of reference links, returning dictionary of valid references
+    {symbolic_name : URL}
+    """
+
+    result = {}
+    urls_seen = set()
+    if ref_path:
+        with open(ref_path, 'r') as reader:
+            for (num, line) in enumerate(reader):
+                line_num = num + 1
+                m = P_INTERNAL_LINK_DEF.search(line)
+                require(m,
+                        '{0}:{1} not valid reference:\n{2}'.format(ref_path, line_num, line.rstrip()))
+                name = m.group(1)
+                url = m.group(2)
+                require(name,
+                        'Empty reference at {0}:{1}'.format(ref_path, line_num))
+                reporter.check(name not in result,
+                               ref_path,
+                               'Duplicate reference {0} at line {1}',
+                               name, line_num)
+                reporter.check(url not in urls_seen,
+                               ref_path,
+                               'Duplicate definition of URL {0} at line {1}',
+                               url, line_num)
+                result[name] = url
+                urls_seen.add(url)
+    return result
+
+
+def read_all_markdown(source_dir, parser):
     """Read source files, returning
     {path : {'metadata':yaml, 'metadata_len':N, 'text':text, 'lines':[(i, line, len)], 'doc':doc}}
     """
@@ -140,7 +211,7 @@ def read_all_markdown(args, source_dir):
     result = {}
     for pat in all_patterns:
         for filename in glob.glob(pat):
-            data = read_markdown(args.parser, filename)
+            data = read_markdown(parser, filename)
             if data:
                 result[filename] = data
     return result
@@ -184,6 +255,38 @@ def check_fileset(source_dir, reporter, filenames_present):
                    seen)
 
 
+def check_figures(source_dir, reporter):
+    """Check that all figures are present and referenced."""
+
+    # Get references.
+    try:
+        all_figures_html = os.path.join(source_dir, '_includes', 'all_figures.html')
+        with open(all_figures_html, 'r') as reader:
+            text = reader.read()
+        figures = P_FIGURE_REFS.findall(text)
+        referenced = [os.path.split(f)[1] for f in figures if '/fig/' in f]
+    except FileNotFoundError as e:
+        reporter.add(all_figures_html,
+                     'File not found')
+        return
+
+    # Get actual image files (ignore non-image files).
+    fig_dir_path = os.path.join(source_dir, 'fig')
+    actual = [f for f in os.listdir(fig_dir_path) if os.path.splitext(f)[1] in IMAGE_FILE_SUFFIX]
+
+    # Report differences.
+    unexpected = set(actual) - set(referenced)
+    reporter.check(not unexpected,
+                   None,
+                   'Unexpected image files: {0}',
+                   ', '.join(sorted(unexpected)))
+    missing = set(referenced) - set(actual)
+    reporter.check(not missing,
+                   None,
+                   'Missing image files: {0}',
+                   ', '.join(sorted(missing)))
+
+
 def create_checker(args, filename, info):
     """Create appropriate checker for file."""
 
@@ -192,14 +295,6 @@ def create_checker(args, filename, info):
             return cls(args, filename, **info)
 
 
-def require(condition, message):
-    """Fail if condition not met."""
-
-    if not condition:
-        print(message, file=sys.stderr)
-        sys.exit(1)
-
-
 class CheckBase(object):
     """Base class for checking Markdown files."""
 
@@ -220,12 +315,14 @@ class CheckBase(object):
 
 
     def check(self):
-        """Run tests on metadata."""
+        """Run tests."""
 
         self.check_metadata()
-        self.check_text()
+        self.check_line_lengths()
+        self.check_trailing_whitespace()
         self.check_blockquote_classes()
         self.check_codeblock_classes()
+        self.check_defined_link_references()
 
 
     def check_metadata(self):
@@ -239,10 +336,10 @@ class CheckBase(object):
             self.reporter.check_field(self.filename, 'metadata', self.metadata, 'layout', self.layout)
 
 
-    def check_text(self):
+    def check_line_lengths(self):
         """Check the raw text of the lesson body."""
 
-        if self.args.line_len:
+        if self.args.line_lengths:
             over = [i for (i, l, n) in self.lines if (n > MAX_LINE_LEN) and (not l.startswith('!'))]
             self.reporter.check(not over,
                                 self.filename,
@@ -250,6 +347,17 @@ class CheckBase(object):
                                 ', '.join([str(i) for i in over]))
 
 
+    def check_trailing_whitespace(self):
+        """Check for whitespace at the ends of lines."""
+
+        if self.args.trailing_whitespace:
+            trailing = [i for (i, l, n) in self.lines if P_TRAILING_WHITESPACE.match(l)]
+            self.reporter.check(not trailing,
+                                self.filename,
+                                'Line(s) end with whitespace: {0}',
+                                ', '.join([str(i) for i in trailing]))
+
+
     def check_blockquote_classes(self):
         """Check that all blockquotes have known classes."""
 
@@ -272,6 +380,25 @@ class CheckBase(object):
                                 cls)
 
 
+    def check_defined_link_references(self):
+        """Check that defined links resolve in the file.
+
+        Internally-defined links match the pattern [text][label].
+        """
+
+        result = set()
+        for node in self.find_all(self.doc, {'type' : 'text'}):
+            for match in P_INTERNAL_LINK_REF.findall(node['value']):
+                text = match[0]
+                link = match[1]
+                if link not in self.args.references:
+                    result.add('"{0}"=>"{1}"'.format(text, link))
+        self.reporter.check(not result,
+                            self.filename,
+                            'Internally-defined links may be missing definitions: {0}',
+                            ', '.join(sorted(result)))
+
+
     def find_all(self, node, pattern, accum=None):
         """Find all matches for a pattern."""
 
@@ -341,6 +468,12 @@ class CheckIndex(CheckBase):
         super(CheckIndex, self).__init__(args, filename, metadata, metadata_len, text, lines, doc)
         self.layout = 'lesson'
 
+    def check_metadata(self):
+        super(CheckIndex, self).check_metadata()
+        self.reporter.check(self.metadata.get('root', '') == '.',
+                            self.filename,
+                            'Root not set to "."')
+
 
 class CheckEpisode(CheckBase):
     """Check an episode page."""
@@ -348,14 +481,58 @@ class CheckEpisode(CheckBase):
     def __init__(self, args, filename, metadata, metadata_len, text, lines, doc):
         super(CheckEpisode, self).__init__(args, filename, metadata, metadata_len, text, lines, doc)
 
+
+    def check(self):
+        """Run extra tests."""
+
+        super(CheckEpisode, self).check()
+        self.check_reference_inclusion()
+
+
     def check_metadata(self):
         super(CheckEpisode, self).check_metadata()
         if self.metadata:
-            for (name, type_) in EPISODE_METADATA_FIELDS:
-                self.reporter.check(type(self.metadata.get(name, None)) == type_,
-                                    self.filename,
-                                    '"{0}" missing, empty, or has wrong type in metadata',
-                                    name)
+            if 'layout' in self.metadata:
+                if self.metadata['layout'] == 'break':
+                    self.check_metadata_fields(BREAK_METADATA_FIELDS)
+                else:
+                    self.reporter.add(self.filename,
+                                      'Unknown episode layout "{0}"',
+                                      self.metadata['layout'])
+            else:
+                self.check_metadata_fields(TEACHING_METADATA_FIELDS)
+
+
+    def check_metadata_fields(self, expected):
+        for (name, type_) in expected:
+            if name not in self.metadata:
+                self.reporter.add(self.filename,
+                                  'Missing metadata field {0}',
+                                  name)
+            elif type(self.metadata[name]) != type_:
+                self.reporter.add(self.filename,
+                                  '"{0}" has wrong type in metadata ({1} instead of {2})',
+                                  name, type(self.metadata[name]), type_)
+
+
+    def check_reference_inclusion(self):
+        """Check that links file has been included."""
+
+        if not self.args.reference_path:
+            return
+
+        for (i, last_line, line_len) in reversed(self.lines):
+            if last_line:
+                break
+
+        require(last_line,
+                'No non-empty lines in {0}'.format(self.filename))
+
+        include_filename = os.path.split(self.args.reference_path)[-1]
+        if include_filename not in last_line:
+            self.reporter.add(self.filename,
+                              'episode does not include "{0}"',
+                              include_filename)
 
 
 class CheckReference(CheckBase):