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annotate mercurial/hgweb/common.py @ 5561:22713dce19f6

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hgweb: return meaningful HTTP status codes instead of nonsense
author Bryan O'Sullivan <bos@serpentine.com>
date Wed, 28 Nov 2007 08:38:42 -0800
parents 12e4d9524951
children d61fea133f2d
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1 # hgweb/common.py - Utility functions needed by hgweb_mod and hgwebdir_mod
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2 #
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3 # Copyright 21 May 2005 - (c) 2005 Jake Edge <jake@edge2.net>
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4 # Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
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5 #
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6 # This software may be used and distributed according to the terms
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7 # of the GNU General Public License, incorporated herein by reference.
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8
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9 import errno, mimetypes, os
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10
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11 class ErrorResponse(Exception):
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12 def __init__(self, code, message=None):
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13 Exception.__init__(self)
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14 self.code = code
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15 if message is None:
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16 from httplib import responses
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17 self.message = responses.get(code, 'Error')
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18 else:
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19 self.message = message
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20
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21 def get_mtime(repo_path):
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22 store_path = os.path.join(repo_path, ".hg")
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23 if not os.path.isdir(os.path.join(store_path, "data")):
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24 store_path = os.path.join(store_path, "store")
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25 cl_path = os.path.join(store_path, "00changelog.i")
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26 if os.path.exists(cl_path):
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27 return os.stat(cl_path).st_mtime
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28 else:
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29 return os.stat(store_path).st_mtime
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30
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31 def staticfile(directory, fname, req):
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32 """return a file inside directory with guessed content-type header
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33
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34 fname always uses '/' as directory separator and isn't allowed to
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35 contain unusual path components.
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36 Content-type is guessed using the mimetypes module.
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37 Return an empty string if fname is illegal or file not found.
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38
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39 """
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40 parts = fname.split('/')
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41 path = directory
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42 for part in parts:
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43 if (part in ('', os.curdir, os.pardir) or
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44 os.sep in part or os.altsep is not None and os.altsep in part):
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45 return ""
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46 path = os.path.join(path, part)
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47 try:
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48 os.stat(path)
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49 ct = mimetypes.guess_type(path)[0] or "text/plain"
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50 req.header([('Content-type', ct),
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51 ('Content-length', str(os.path.getsize(path)))])
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52 return file(path, 'rb').read()
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53 except TypeError:
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54 raise ErrorResponse(500, 'illegal file name')
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55 except OSError, err:
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56 if err.errno == errno.ENOENT:
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57 raise ErrorResponse(404)
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58 else:
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59 raise ErrorResponse(500, err.strerror)
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61 def style_map(templatepath, style):
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62 """Return path to mapfile for a given style.
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63
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64 Searches mapfile in the following locations:
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65 1. templatepath/style/map
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66 2. templatepath/map-style
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67 3. templatepath/map
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68 """
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69 locations = style and [os.path.join(style, "map"), "map-"+style] or []
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70 locations.append("map")
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71 for location in locations:
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72 mapfile = os.path.join(templatepath, location)
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73 if os.path.isfile(mapfile):
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74 return mapfile
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75 raise RuntimeError("No hgweb templates found in %r" % templatepath)
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76
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77 def paritygen(stripecount, offset=0):
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78 """count parity of horizontal stripes for easier reading"""
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79 if stripecount and offset:
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80 # account for offset, e.g. due to building the list in reverse
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81 count = (stripecount + offset) % stripecount
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82 parity = (stripecount + offset) / stripecount & 1
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83 else:
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84 count = 0
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85 parity = 0
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86 while True:
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87 yield parity
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88 count += 1
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89 if stripecount and count >= stripecount:
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90 parity = 1 - parity
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91 count = 0
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92