A state that encapsulates a single possibility to fulfill the given {#requirement}
@!visibility private @see DependencyGraph#detach_vertex_named
@!visibility private @see DependencyGraph#tag
Delegates
all {Gem::Resolver::Molinillo::ResolutionState} methods to a ‘#state` property.
Returns the number of malloc() allocations.
Only available if ruby was built with CALC_EXACT_MALLOC_SIZE
.
Equivalent to Date#new_start
with argument Date::ITALY
.
Copies a file entry. See install(1).
Arguments src
(a single path or an array of paths) and dest
(a single path) should be interpretable as paths;
If the entry at dest
does not exist, copies from src
to dest
:
File.read('src0.txt') # => "aaa\n" File.exist?('dest0.txt') # => false FileUtils.install('src0.txt', 'dest0.txt') File.read('dest0.txt') # => "aaa\n"
If dest
is a file entry, copies from src
to dest
, overwriting:
File.read('src1.txt') # => "aaa\n" File.read('dest1.txt') # => "bbb\n" FileUtils.install('src1.txt', 'dest1.txt') File.read('dest1.txt') # => "aaa\n"
If dest
is a directory entry, copies from src
to dest/src
, overwriting if necessary:
File.read('src2.txt') # => "aaa\n" File.read('dest2/src2.txt') # => "bbb\n" FileUtils.install('src2.txt', 'dest2') File.read('dest2/src2.txt') # => "aaa\n"
If src
is an array of paths and dest
points to a directory, copies each path path
in src
to dest/path
:
File.file?('src3.txt') # => true File.file?('src3.dat') # => true FileUtils.mkdir('dest3') FileUtils.install(['src3.txt', 'src3.dat'], 'dest3') File.file?('dest3/src3.txt') # => true File.file?('dest3/src3.dat') # => true
Keyword arguments:
group: group
- changes the group if not nil
, using File.chown
.
mode: permissions
- changes the permissions. using File.chmod
.
noop: true
- does not copy entries; returns nil
.
owner: owner
- changes the owner if not nil
, using File.chown
.
preserve: true
- preserve timestamps using File.utime
.
verbose: true
- prints an equivalent command:
FileUtils.install('src0.txt', 'dest0.txt', noop: true, verbose: true) FileUtils.install('src1.txt', 'dest1.txt', noop: true, verbose: true) FileUtils.install('src2.txt', 'dest2', noop: true, verbose: true)
Output:
install -c src0.txt dest0.txt install -c src1.txt dest1.txt install -c src2.txt dest2
Related: methods for copying.
Copies a file entry. See install(1).
Arguments src
(a single path or an array of paths) and dest
(a single path) should be interpretable as paths;
If the entry at dest
does not exist, copies from src
to dest
:
File.read('src0.txt') # => "aaa\n" File.exist?('dest0.txt') # => false FileUtils.install('src0.txt', 'dest0.txt') File.read('dest0.txt') # => "aaa\n"
If dest
is a file entry, copies from src
to dest
, overwriting:
File.read('src1.txt') # => "aaa\n" File.read('dest1.txt') # => "bbb\n" FileUtils.install('src1.txt', 'dest1.txt') File.read('dest1.txt') # => "aaa\n"
If dest
is a directory entry, copies from src
to dest/src
, overwriting if necessary:
File.read('src2.txt') # => "aaa\n" File.read('dest2/src2.txt') # => "bbb\n" FileUtils.install('src2.txt', 'dest2') File.read('dest2/src2.txt') # => "aaa\n"
If src
is an array of paths and dest
points to a directory, copies each path path
in src
to dest/path
:
File.file?('src3.txt') # => true File.file?('src3.dat') # => true FileUtils.mkdir('dest3') FileUtils.install(['src3.txt', 'src3.dat'], 'dest3') File.file?('dest3/src3.txt') # => true File.file?('dest3/src3.dat') # => true
Keyword arguments:
group: group
- changes the group if not nil
, using File.chown
.
mode: permissions
- changes the permissions. using File.chmod
.
noop: true
- does not copy entries; returns nil
.
owner: owner
- changes the owner if not nil
, using File.chown
.
preserve: true
- preserve timestamps using File.utime
.
verbose: true
- prints an equivalent command:
FileUtils.install('src0.txt', 'dest0.txt', noop: true, verbose: true) FileUtils.install('src1.txt', 'dest1.txt', noop: true, verbose: true) FileUtils.install('src2.txt', 'dest2', noop: true, verbose: true)
Output:
install -c src0.txt dest0.txt install -c src1.txt dest1.txt install -c src2.txt dest2
Related: methods for copying.
Top level install helper method. Allows you to install gems interactively:
% irb >> Gem.install "minitest" Fetching: minitest-5.14.0.gem (100%) => [#<Gem::Specification:0x1013b4528 @name="minitest", ...>]
Waits for all children, returning an array of pid/status pairs (where status is a Process::Status
object).
fork { sleep 0.2; exit 2 } #=> 27432 fork { sleep 0.1; exit 1 } #=> 27433 fork { exit 0 } #=> 27434 p Process.waitall
produces:
[[30982, #<Process::Status: pid 30982 exit 0>], [30979, #<Process::Status: pid 30979 exit 1>], [30976, #<Process::Status: pid 30976 exit 2>]]
Returns the size of memory allocated by malloc().
Only available if ruby was built with CALC_EXACT_MALLOC_SIZE
.
Adds a post-install hook that will be passed an Gem::Installer
instance when Gem::Installer#install
is called
Adds a post-installs hook that will be passed a Gem::DependencyInstaller
and a list of installed specifications when Gem::DependencyInstaller#install
is complete
Adds a post-uninstall hook that will be passed a Gem::Uninstaller
instance and the spec that was uninstalled when Gem::Uninstaller#uninstall
is called
Adds a pre-install hook that will be passed an Gem::Installer
instance when Gem::Installer#install
is called. If the hook returns false
then the install will be aborted.
Adds a pre-uninstall hook that will be passed an Gem::Uninstaller
instance and the spec that will be uninstalled when Gem::Uninstaller#uninstall
is called
Installs the gem dep_or_name
and all its dependencies. Returns an Array
of installed gem specifications.
If the :prerelease
option is set and there is a prerelease for dep_or_name
the prerelease version will be installed.
Unless explicitly specified as a prerelease dependency, prerelease gems that dep_or_name
depend on will not be installed.
If c-1.a depends on b-1 and a-1.a and there is a gem b-1.a available then c-1.a, b-1 and a-1.a will be installed. b-1.a will need to be installed separately.
Installs the gem and returns a loaded Gem::Specification
for the installed gem.
The gem will be installed with the following structure:
@gem_home/ cache/<gem-version>.gem #=> a cached copy of the installed gem gems/<gem-version>/... #=> extracted files specifications/<gem-version>.gemspec #=> the Gem::Specification
Installs gems for this RequestSet
using the Gem::Installer
options
.
If a block
is given an activation request
and installer
are yielded. The installer
will be nil
if a gem matching the request was already installed.
Performs the uninstall of the gem. This removes the spec, the Gem
directory, and the cached .gem file.