| #!/usr/bin/env python |
| |
| import json |
| import os |
| import sys |
| |
| def normalize_target(redirect): |
| dirname = os.path.dirname(redirect["source"]) |
| normalized = os.path.normpath(os.path.join(dirname, redirect["target"])) |
| return normalized |
| |
| if len(sys.argv) != 3: |
| sys.stderr.write('usage: program <docs dir> <redirect.json>\n') |
| sys.exit(1) |
| |
| docs_directory = sys.argv[1] |
| redirect_json = sys.argv[2] |
| |
| with open(redirect_json, 'r') as f: |
| redirects = json.loads(f.read()) |
| |
| all_sources = {} |
| |
| # Index all redirect sources |
| for redirect in redirects: |
| all_sources[redirect["source"]] = 1 |
| |
| # Create redirects |
| for redirect in redirects: |
| source = redirect["source"] |
| target = redirect["target"] |
| source_file = os.path.join(docs_directory, source) |
| |
| # Ensure redirect source doesn't exist yet. |
| if os.path.exists(source_file): |
| raise Exception('Redirect source is an actual file: ' + source) |
| |
| # Ensure target *does* exist, if relative. |
| if not target.startswith("/"): |
| target_file = os.path.join(docs_directory, normalize_target(redirect)) |
| if not os.path.exists(target_file) and source not in all_sources: |
| raise Exception('Redirect target does not exist for source: ' + source) |
| |
| # Write redirect file |
| with open(source_file, 'w') as f: |
| f.write("---\n") |
| f.write("layout: redirect_page\n") |
| f.write("redirect_target: " + target + "\n") |
| f.write("---\n") |