SVK::Util(3) User Contributed Perl Documentation SVK::Util(3)NAMESVK::Util - Utility functions for SVK classes
SYNOPSIS
use SVK::Util qw( func1 func2 func3 )
DESCRIPTION
This is yet another abstraction function set for portable file, buffer
and IO handling, tailored to SVK's specific needs.
No symbols are exported by default; the user module needs to specify
the list of functions to import.
CONSTANTS
Constant Functions
IS_WIN32
Boolean flag to indicate whether this system is running Microsoft
Windows.
DEFAULT_EDITOR
The default program to invoke for editing buffers: "notepad.exe" on
Win32, "vi" otherwise.
TEXT_MODE
The I/O layer for text files: ":crlf" on Win32, empty otherwise.
HAS_SYMLINK
Boolean flag to indicate whether this system supports "symlink()".
HAS_SVN_MIRROR
Boolean flag to indicate whether we can successfully load SVN::Mirror.
Constant Scalars
$SEP
Native path separator: platform: "\" on dosish platforms, "/"
otherwise.
$EOL
End of line marker: "\015\012" on Win32, "\012" otherwise.
FUNCTIONS
User Interactivity
get_prompt ($prompt, $pattern)
Repeatedly prompt the user for a line of answer, until it matches the
regular expression pattern. Returns the chomped answer line.
edit_file ($file_name)
Launch editor to edit a file.
get_buffer_from_editor ($what, $sep, $content, $filename, $anchor,
$targets_ref)
XXX Undocumented
get_encoding
Get the current encoding from locale
get_encoder ([$encoding])
from_native ($octets, $what, [$encoding])
to_native ($octets, $what, [$encoding])
File Content Manipulation
read_file ($filename)
Read from a file and returns its content as a single scalar.
write_file ($filename, $content)
Write out content to a file, overwriting existing content if present.
slurp_fh ($input_fh, $output_fh)
Read all data from the input filehandle and write them to the output
filehandle. The input may also be a scalar, or reference to a scalar.
md5_fh ($input_fh)
Calculate MD5 checksum for data in the input filehandle.
mimetype ($file)
Return the MIME type for the file, or "undef" if the MIME database is
missing on the system.
mimetype_is_text ($mimetype)
Return whether a MIME type string looks like a text file.
is_binary_file ($filename OR $filehandle)
Returns true if the given file or filehandle contains binary data.
Otherwise, returns false.
Path and Filename Handling
abspath ($path)
Return paths with components in symlink resolved, but keep the final
path even if it's symlink. Returns "undef" if the base directory does
not exist.
abs_path_noexist ($path)
Return paths with components in symlink resolved, but keep the final
path even if it's symlink. Unlike abs_path(), returns a valid value
even if the base directory doesn't exist.
abs2rel ($pathname, $old_basedir, $new_basedir, $sep)
Replace the base directory in the native pathname to another base
directory and return the result.
If the pathname is not under $old_basedir, it is returned unmodified.
If $new_basedir is an empty string, removes the old base directory but
keeps the leading slash. If $new_basedir is "undef", also removes the
leading slash.
By default, the return value of this function will use $SEP as its path
separator. Setting $sep to "/" will turn native path separators into
"/" instead.
catdir (@directories)
Concatenate directory names to form a complete path; also removes the
trailing slash from the resulting string, unless it is the root
directory.
catfile (@directories, $pathname)
Concatenate one or more directory names and a filename to form a
complete path, ending with a filename. If $pathname contains
directories, they will be splitted off to the end of @directories.
catpath ($volume, $directory, $filename)
XXX Undocumented - See File::Spec
devnull ()
Return a file name suitable for reading, and guaranteed to be empty.
get_anchor ($need_target, @paths)
Returns the (anchor, target) pairs for native path @paths. Discard the
targets being returned unless $need_target.
get_depot_anchor ($need_target, @paths)
Returns the (anchor, target) pairs for depotpaths @paths. Discard the
targets being returned unless $need_target.
catdepot ($depot_name, @paths)
make_path ($path)
Create a directory, and intermediate directories as required.
splitpath ($path)
Splits a path in to volume, directory, and filename portions. On
systems with no concept of volume, returns an empty string for volume.
splitdir ($path)
The opposite of "catdir()"; return a list of path components.
tmpdir ()
Return the name of the first writable directory from a list of possible
temporary directories.
tmpfile (TEXT => $is_textmode, %args)
In scalar context, return the filehandle of a temporary file. In list
context, return the filehandle and the filename.
If $is_textmode is true, the returned file handle is marked with
"TEXT_MODE".
See File::Temp for valid keys of %args.
is_symlink ($filename)
Return whether a file is a symbolic link, as determined by "-l". If
$filename is not specified, return "-l _" instead.
is_executable ($filename)
Return whether a file is likely to be an executable file. Unlike
"is_symlink()", the $filename argument is not optional.
can_run ($filename)
Check if we can run some command.
is_uri ($string)
Check if a string is a valid URI.
move_path ($source, $target)
Move a path to another place, creating intermediate directories in the
target path if neccessary. If move failed, tell the user to move it
manually.
traverse_history (root => $fs_root, path => $path, cross => $cross,
callback => $cb($path, $revision))
Traverse the history of $path in $fs_root backwards until the first
copy, unless $cross is true. We do cross renames regardless of the
value of $cross being non-zero, but not -1. We invoke $cb for each
$path, $revision we encounter. If cb returns a nonzero value we stop
traversing as well.
is_path_inside($path, $parent)
Returns true if unix path $path is inside $parent. If they are the
same, return true as well.
uri_escape($uri)
Returns escaped URI.
uri_unescape($uri)
Unescape escaped URI and return it.
is_depotpath($path)
Check if a string is a valid depotpath.
perl v5.14.1 2009-12-21 SVK::Util(3)
