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| 1 #!/usr/bin/env python |
| 2 # Copyright 2015 The Chromium Authors. All rights reserved. |
| 3 # Use of this source code is governed by a BSD-style license that can be |
| 4 # found in the LICENSE file. |
| 5 |
| 6 |
| 7 """Reads, parses, and (optionally) writes as HTML the contents of Markdown |
| 8 files passed as arguments. Intended for rendering network stack documentation |
| 9 stored as Markdown in the source tree to a human-readable format.""" |
| 10 |
| 11 |
| 12 import argparse |
| 13 import os.path |
| 14 import sys |
| 15 |
| 16 |
| 17 def nth_parent_directory(path, n): |
| 18 for i in range(n): |
| 19 path = os.path.dirname(path) |
| 20 return path |
| 21 |
| 22 |
| 23 # Go up the directory tree from this script and add src/third_party to sys.path |
| 24 # so "import markdown" can find it in src/third_party/markdown. |
| 25 SCRIPT_PATH = os.path.abspath(__file__) |
| 26 SRC_PATH = nth_parent_directory(SCRIPT_PATH, 4) |
| 27 THIRD_PARTY_PATH = os.path.join(SRC_PATH, 'third_party') |
| 28 sys.path.insert(0, THIRD_PARTY_PATH) |
| 29 import markdown |
| 30 |
| 31 |
| 32 def ReadFile(filename): |
| 33 with open(filename, 'r') as file: |
| 34 return file.read() |
| 35 |
| 36 |
| 37 def WriteFile(filename, contents): |
| 38 dir = os.path.dirname(filename) |
| 39 if not os.path.isdir(dir): |
| 40 os.mkdir(dir) |
| 41 with open(filename, 'w') as file: |
| 42 file.write(contents) |
| 43 |
| 44 |
| 45 TEMPLATE = """ |
| 46 <html> |
| 47 <head> |
| 48 <title>{title}</title> |
| 49 </head> |
| 50 <body> |
| 51 {body} |
| 52 </body> |
| 53 </html>""" |
| 54 |
| 55 |
| 56 def FormatPage(markdown_html, title): |
| 57 # TODO(ttuttle): Add a navigation list / table of contents of available |
| 58 # Markdown files, perhaps? |
| 59 return TEMPLATE.format(title=title, body=markdown_html) |
| 60 |
| 61 |
| 62 def ProcessDocs(input_filenames, input_pathname, output_pathname): |
| 63 """Processes a list of Markdown documentation files. |
| 64 |
| 65 If input_pathname and output_pathname are specified, outputs HTML files |
| 66 into the corresponding subdirectories of output_pathname. If one or both is |
| 67 not specified, simply ensures the files exist and contain valid Markdown. |
| 68 |
| 69 Args: |
| 70 input_filenames: A list of filenames (absolute, or relative to $PWD) of |
| 71 Markdown files to parse and possibly render. |
| 72 input_pathname: The base directory of the input files. (Needed so they |
| 73 can be placed in the same relative path in the output path.) |
| 74 output_pathname: The output directory into which rendered Markdown files |
| 75 go, using that relative path. |
| 76 |
| 77 Returns: |
| 78 nothing |
| 79 |
| 80 Raises: |
| 81 IOError: if any of the file operations fail (e.g. input_filenames |
| 82 contains a non-existent file). |
| 83 """ |
| 84 |
| 85 outputting = (input_pathname is not None) and (output_pathname is not None) |
| 86 |
| 87 markdown_parser = markdown.Markdown() |
| 88 |
| 89 for input_filename in input_filenames: |
| 90 markdown_text = ReadFile(input_filename) |
| 91 markdown_html = markdown_parser.reset().convert(markdown_text) |
| 92 if not outputting: |
| 93 continue |
| 94 |
| 95 full_html = FormatPage(markdown_html, title=input_filename) |
| 96 rel_filename = os.path.relpath(input_filename, start=input_pathname) |
| 97 output_filename = os.path.join(output_pathname, rel_filename) + '.html' |
| 98 WriteFile(output_filename, full_html) |
| 99 |
| 100 |
| 101 def main(): |
| 102 parser = argparse.ArgumentParser( |
| 103 description='Parse and render Markdown documentation') |
| 104 parser.add_argument('--input_path', default=None, |
| 105 help="Input path for Markdown; required only if output_path set") |
| 106 parser.add_argument('--output_path', default=None, |
| 107 help="Output path for rendered HTML; if unspecified, won't output") |
| 108 parser.add_argument('filenames', nargs=argparse.REMAINDER) |
| 109 args = parser.parse_args() |
| 110 |
| 111 ProcessDocs(args.filenames, args.input_path, args.output_path) |
| 112 |
| 113 return 0 |
| 114 |
| 115 |
| 116 if __name__ == '__main__': |
| 117 sys.exit(main()) |
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Chromium Code Reviews
Issue 868843002:
net docs: Barebones doc renderer and net_docs target. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master