Guido van Rossum | 217a5fa | 1990-12-26 15:40:07 +0000 | [diff] [blame^] | 1 | # module 'macpath' |
| 2 | |
| 3 | import mac |
| 4 | |
| 5 | import string |
| 6 | |
| 7 | from stat import * |
| 8 | |
| 9 | def isabs(s): |
| 10 | return ':' in s and s[0] <> ':' |
| 11 | |
| 12 | def cat(s, t): |
| 13 | if (not s) or isabs(t): return t |
| 14 | if t[:1] = ':': t = t[1:] |
| 15 | if ':' not in s: |
| 16 | s = ':' + s |
| 17 | if s[-1:] <> ':': |
| 18 | s = s + ':' |
| 19 | return s + t |
| 20 | |
| 21 | norm_error = 'path cannot be normalized' |
| 22 | |
| 23 | def norm(s): |
| 24 | if ':' not in s: |
| 25 | return ':' + s |
| 26 | f = string.splitfields(s, ':') |
| 27 | pre = [] |
| 28 | post = [] |
| 29 | if not f[0]: |
| 30 | pre = f[:1] |
| 31 | f = f[1:] |
| 32 | if not f[len(f)-1]: |
| 33 | post = f[-1:] |
| 34 | f = f[:-1] |
| 35 | res = [] |
| 36 | for seg in f: |
| 37 | if seg: |
| 38 | res.append(seg) |
| 39 | else: |
| 40 | if not res: raise norm_error # starts with '::' |
| 41 | del res[len(res)-1] |
| 42 | if not (pre or res): |
| 43 | raise norm_error # starts with 'vol::' |
| 44 | if pre: res = pre + res |
| 45 | if post: res = res + post |
| 46 | s = res[0] |
| 47 | for seg in res[1:]: |
| 48 | s = s + ':' + seg |
| 49 | return s |
| 50 | |
| 51 | def isdir(s): |
| 52 | try: |
| 53 | st = mac.stat(s) |
| 54 | except mac.error: |
| 55 | return 0 |
| 56 | return S_ISDIR(st[ST_MODE]) |
| 57 | |
| 58 | def isfile(s): |
| 59 | try: |
| 60 | st = mac.stat(s) |
| 61 | except mac.error: |
| 62 | return 0 |
| 63 | return S_ISREG(st[ST_MODE]) |
| 64 | |
| 65 | def exists(s): |
| 66 | try: |
| 67 | st = mac.stat(s) |
| 68 | except mac.error: |
| 69 | return 0 |
| 70 | return 1 |