| Line 43... |
Line 43... |
| 43 |
If a filename starts with \code{.} this may need to be matched
|
43 |
If a filename starts with \code{.} this may need to be matched
|
| 44 |
explicitly: for example \code{Sys.glob("*.RData")} may or may not
|
44 |
explicitly: for example \code{Sys.glob("*.RData")} may or may not
|
| 45 |
match \file{.RData} but will not usually match \file{.aa.RData}. Note
|
45 |
match \file{.RData} but will not usually match \file{.aa.RData}. Note
|
| 46 |
that this is platform-dependent: e.g. on Solaris \code{Sys.glob("*.*")}
|
46 |
that this is platform-dependent: e.g. on Solaris \code{Sys.glob("*.*")}
|
| 47 |
matches \file{.} and \file{..}.
|
47 |
matches \file{.} and \file{..}.
|
| 48 |
|
48 |
|
| 49 |
\code{[} begins a character class. If the first character in
|
49 |
\code{[} begins a character class. If the first character in
|
| 50 |
\code{[...]} is not \code{!}, this is a character class which matches
|
50 |
\code{[...]} is not \code{!}, this is a character class which matches
|
| 51 |
a single character against any of the characters specified. The class
|
51 |
a single character against any of the characters specified. The class
|
| 52 |
cannot be empty, so \code{]} can be included provided it is first. If
|
52 |
cannot be empty, so \code{]} can be included provided it is first. If
|
| 53 |
the first character is \code{!}, the character class matches a single
|
53 |
the first character is \code{!}, the character class matches a single
|
| 54 |
character which is \emph{none} of the specified characters. Whether
|
54 |
character which is \emph{none} of the specified characters. Whether
|
| 55 |
\code{.} in a character class matches a leading \code{.} in the
|
55 |
\code{.} in a character class matches a leading \code{.} in the
|
| 56 |
filename is OS-dependent.
|
56 |
filename is OS-dependent.
|
| 57 |
|
57 |
|
| 58 |
Character classes can include ranges such as \code{[A-Z]}: include
|
58 |
Character classes can include ranges such as \code{[A-Z]}: include
|
| 59 |
\code{-} as a character by having it first or last in a class. (The
|
59 |
\code{-} as a character by having it first or last in a class. (The
|
| 60 |
interpretation of ranges should be locale-specific, so the example is
|
60 |
interpretation of ranges should be locale-specific, so the example is
|
| 61 |
not a good idea in an Estonian locale.)
|
61 |
not a good idea in an Estonian locale.)
|
| 62 |
|
62 |
|
| Line 78... |
Line 78... |
| 78 |
cannot be empty, so \code{]} can be included provided it is first. If
|
78 |
cannot be empty, so \code{]} can be included provided it is first. If
|
| 79 |
the first character is \code{!}, the character class matches a single
|
79 |
the first character is \code{!}, the character class matches a single
|
| 80 |
character which is \emph{none} of the specified characters. Whether
|
80 |
character which is \emph{none} of the specified characters. Whether
|
| 81 |
\code{.} in a character class matches a leading \code{.} in the
|
81 |
\code{.} in a character class matches a leading \code{.} in the
|
| 82 |
filename is OS-dependent.
|
82 |
filename is OS-dependent.
|
| 83 |
|
83 |
|
| 84 |
Character classes can include ranges such as \code{[A-Z]}: include
|
84 |
Character classes can include ranges such as \code{[A-Z]}: include
|
| 85 |
\code{-} as a character by having it first or last in a class. (In the
|
85 |
\code{-} as a character by having it first or last in a class. (In the
|
| 86 |
current implementation ranges are in numeric order of Unicode points.)
|
86 |
current implementation ranges are in numeric order of Unicode points.)
|
| 87 |
|
87 |
|
| 88 |
One can remove the special meaning of \code{?}, \code{*} and
|
88 |
One can remove the special meaning of \code{?}, \code{*} and
|
| Line 103... |
Line 103... |
| 103 |
A character vector of matched file paths. The order is
|
103 |
A character vector of matched file paths. The order is
|
| 104 |
system-specific (but in the order of the elements of \code{paths}): it
|
104 |
system-specific (but in the order of the elements of \code{paths}): it
|
| 105 |
is normally collated in either the current locale or in byte (ASCII)
|
105 |
is normally collated in either the current locale or in byte (ASCII)
|
| 106 |
order; however, on Windows collation is in the order of Unicode
|
106 |
order; however, on Windows collation is in the order of Unicode
|
| 107 |
points.
|
107 |
points.
|
| 108 |
|
108 |
|
| 109 |
Directory errors are normally ignored, so the matches are to
|
109 |
Directory errors are normally ignored, so the matches are to
|
| 110 |
accessible file paths (but not necessarily accessible files).
|
110 |
accessible file paths (but not necessarily accessible files).
|
| 111 |
}
|
111 |
}
|
| 112 |
\seealso{
|
112 |
\seealso{
|
| 113 |
\code{\link{path.expand}}.
|
113 |
\code{\link{path.expand}}.
|
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