SVK::Util(3) User Contributed Perl Documentation SVK::Util(3)
NAME
SVK::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.
perl v5.8.8 2007-03-26 SVK::Util(3)
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