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1 # Module 'riscospath' -- common operations on RISC OS pathnames.
15 # strings representing various path-related bits and pieces
24 # Imports - make an error-generating swi object if the swi module is not
45 # to understand the "-SomeFS-" notation left over from the old BBC Master MOS,
47 # compatible but remember that "-SomeFS-" can also be a perfectly valid file
60     dash= _allowMOSFSNames and p[:1]=='-'
62         q= string.find(p, '-', 1)+1
67             q= string.find(p, ':')+1 # q= index of start of non-FS portion of path
69     if s==-1 or s>q:
75                 break # disallow invalid non-special-field characters in FS name
87   OS filesystems are case-insensitive. However, not all filesystems have to be,
109   an absolute or FS-changing path part is found.
116         elif j[-1]==':':
130     if q!=-1:
142         q= len(head)-string.rfind(head, '/')
143         return (p[:-q], p[-q:])
203 # RISC OS-specific file access functions
246 # Same-file testing.
290         if fs[:1]=='-':
291             fsname= fs[1:-1]
293             fsname= fs[:-1]
297         urd= b.tostring(0, l-x-1)
301             urd= b.tostring(0, l-x-1)
306 # Environment variables are in angle brackets.
310   Expand environment variables using OS_GSTrans.
318 abspath = os.expand
321 # realpath is a no-op on systems without islink support
329   Normalize path, eliminating up-directory ^s.
340                 ups= ups-1
347         ups= ups-1
362     may modify the fnames list in-place (e.g. via del or slice assignment),