This is an internal method, but is called a bunch of times in
performance-critical codepaths, and is ultra slow because the constant
is interpoplated into the Regexp each time the method is called.
Alas, this has been fixed in Ruby 1.9+.
The option `du -s` is equivalent to `du -d0`. The former is a POSIX standard
(IEEE Std 1003.1-2008), whereas the latter is a BSD extension.
From the BSD man page:
`-s Display an entry for each specified file. (Equivalent to -d 0)`
From SUSv4:
`-s Instead of the default output, report only the total sum for each of the specified files.`
http://pubs.opengroup.org/onlinepubs/9699919799/utilities/du.htmlClosesHomebrew/homebrew#16516.
Signed-off-by: Charlie Sharpsteen <source@sharpsteen.net>
* Renames --force to --overwrite, freeing up brew ln --force for Homebrew/homebrew#13349
* Changes --dry-run to preview linking by default, rather than
overwriting. An overwrite dry-run can be simulated via both
--dry-run --overwrite
* Adds some basic Keg tests
mkpathed directories aren't really "linked" or "unlinked" per se,
and link/unlink handle directories differently. It's easier just to
ignore them, which finally synchronizes link/unlink counts.
Previously we detected this by reading the first line of the file.
However, "first line" is meaningless when dealing with binary files, but
IO#readline will happily keep reading until it finds a newline
character, which can result in some unnecessarily large buffers.
Aside from the performance issue, this causes an additional problem
under Ruby 1.9: trying to match the binary string against a pattern will
raise ArgumentError (unless the binary string just happens to also be
valid UTF-8, heh).
Fix both issues: only read the first 1024 bytes, as no sane shebang will
ever be that long, and use a plain read(), which returns an ASCII
encoded string even on 1.9.
Signed-off-by: Jack Nagel <jacknagel@gmail.com>
ClosesHomebrew/homebrew#13689.
Signed-off-by: Max Howell <mxcl@me.com>
There are subtle distinctions between writable? and writable_real? we don't
understand precisely why we need this, but it fixes the bugs :/
Keg#link would sometimes count a linked file when doing mkpath, even if
the target directory already exists; #unlink would never count it. This
meant that "brew ln" and "brew unlink" counts for the same keg could be
out of sync with each other.
`brew link` can now be made to delete any conflicting files using
the --force argument. It also has a --dry-run option, similar to
git clean -n, which will list any files which would be deleted
without touching the filesystem.
ClosesHomebrew/homebrew#11811.
Signed-off-by: Misty De Meo <mistydemeo@gmail.com>
Pathname is one of the basic building block classes in Homebrew, and as
such it is preferrable that `require`ing it does not drag in other
Homebrew code; thus avoiding circular dependency situations. Its
dependency on bottles.rb gave it an implicit dependency on formula.rb,
among other things.
Signed-off-by: Jack Nagel <jacknagel@gmail.com>
file(1) does not allow leading whitespace on shebang lines, and there
appears to be no restrictions on what characters follow '#!', either.
While at it, fix an erroneous shebang test.
Signed-off-by: Jack Nagel <jacknagel@gmail.com>
The MachO module contains methods for learning about Mach-O binaries,
and can be used where one might normally shell out to file(1).
Signed-off-by: Jack Nagel <jacknagel@gmail.com>
Rationale: we warn when inreplace makes no changes; this is a similar
sort of warning. We expected some list (probably via Dir) to include
some files, but none were found.
Either the list was wrong, or the install can now be omitted.
