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NAME
march - Maple library archive manager
SYNOPSIS
march -a archiveDir { fileName indexName }
march -u archiveDir { fileName indexName }
march -p archiveDir
march -l archiveDir
march -r archiveDir
march -c archiveDir tableSize
march -x archiveDir { indexName fileName }
march -d archiveDir { indexName }
DESCRIPTION
March (the Maple archive manager) is used to manage Maple
".m" files archived in a Maple library. It performs the
following functions, on a library archive:
-adds or updates Maple ".m" files
-packs (garbage collects) the archive
-lists the contents
-reindexes the archive
-creates a library archive
-extracts (but not does not remove) files
-deletes a file
Exactly one of the above command line options must be speci-
fied.
March uses or creates the library archive files "maple.lib"
and "maple.ind" located in archiveDir.
OPTIONS
The following command line options are understood by march.
Exactly one of these options must be specified per command:
-a Adds the specified ".m" files to the archive. Each
file specified by a fileName is added to the archive,
and indexed using the corresponding indexName.
If there is already a file indexed by indexName, march
issues a warning, and processing continues with the
next pair.
-u Updates the specified ".m" files in the archive. For
each indexName, the entry is updated with the
corresponding fileName.
If there is no entry indexed by indexName, march issues
a warning, and processing continues with the next pair.
If the updated version of a file is smaller or the same
size as the old version (in the library archive), it is
stored in the space occupied by the old version. Other-
wise, it is added to the end of the archive and the
space it previously occupied is wasted until the
archive is packed.
-p Packs the library archive. All wasted space is purged
from the archive (see update option above). This can
free up a great deal of space if a large number of
archive members have been replaced, or the same archive
member has been updated frequently.
-l Lists the contents of an archive. Each member is
listed in the order it appears in the index (so the
order is effectively random).
The output consists of five columns: name, date, time,
offset, and size. The name column gives the index name
by which Maple can retrieve the member (or -x option
can extract it) from the archive. The date and time
columns indicate when the member was added to the
archive. The offset column indicates the position in
the archive file ("maple.lib") that the member begins.
The size column indicates how many bytes the member
requires.
-r Reindexes the library archive. The existing index is
scanned, and a new index of optimal size is built. This
index will have the least number of hash buckets possi-
ble such that none of the buckets are full. This
ensures O(1) search time when Maple reads from the
library.
During reindexing, march will display some information
about the newly created index: the number of entries,
the number of buckets, the least number of entries in
any bucket, and the most number of entries in any
bucket (at most 63).
-c Creates a new archive in archiveDir. The tableSize
argument should be approximately the number of files
you wish to store in the archive. This does not limit
the number of files that can be stored (the actual
limit is approximately twice the number specified), but
merely creates the new archive's index file, such that
it can efficiently store that many files.
If an old library exists in archiveDir, march will not
create a new archive. To remove the old library, the
files "maple.lib" and "maple.ind" in archiveDir, must
be removed.
-x Extracts the specified members of the archive. Each
member specified by an indexName is copied into a file
specified by the corresponding fileName. The member is
not removed by this option.
If a member does not exist, a warning is printed and
processing continues with the next pair. If fileName
already exists, march over-writes it.
-d Deletes the members specified by indexName from the
library archive. The members are deleted as soon as
the command is entered, with no warnings to prevent any
accidental deletion. All deleted members become wasted
space in the library archive until the library is
packed.
ARGUMENTS
The archiveDir argument specifies the location of the
archive that is to be managed. The directory "archiveDir"
must exist. The files "archiveDir/maple.lib" and
"archiveDir/maple.ind" must also exist (or will be created
if -c is specified).
The fileName and indexName pairs specify the file whose con-
tents are to be added, or updated in the archive, and the
name that the file should have in the archive index respec-
tively. In the extraction case, fileName refers to the file
into which the contents of indexName are copied (from the
archive).
The tableSize argument is used when creating the archive to
specify the initial index size (see the description of the
-c option).
DIAGNOSTICS
March may produce the following diagnostic messages:
there is already an archive in 'archiveDir'
An attempt was made to create an archive in a directory
which already contains an archive.
there is no existing archive in 'archiveDir'
An attempt was made to add to, update, pack, list, or
extract from a non-existent archive.
there must be an indexName for each fileName
there must be a fileName for each indexName
An add, update, or extract command was followed by an
odd number of names (ie. there was one left over at
the end of the list).
temporary archive files could not be created
could not write to new index or archive
an error occurred while closing the new archive
When packing an archive, the packed archive could not
be created successfully. The archive will be left
untouched. The usual cause of one of these messages is
insufficient disk space. In order to pack an archive,
you need at least as much free space as the size of the
archive. Another possible cause is that you do not
have permissions to write into the directory containing
the archive.
an error occurred while creating 'archiveName'
While extracting from an archive, the extracted file
could not be created successfully. This is usually
caused by lack of disk space or permission to write the
file.
the archive data file could not be created
the archive index file could not be created
an error occurred while creating the archive
an error occurred while creating the index
A new archive could not be created (due to lack of disk
space or improper permissions).
an error occurred while reading the index
The archive index is damaged in some way.
an error occurred while updating the archive
an error occurred while updating the index
an error occurred while updating the index or archive
While adding to or updating an archive, an error
occurred. This is usually as a result of insufficient
disk space. The archive may be left in an unusable
state if this happens.
no more files can be added to the index
The index is completely full. This can happen if far
more files are added to the archive than was originally
intended. In this case, create a temporary directory
somewhere, extract all the files from the archive,
delete the archive, create a new (larger) archive, and
add all the files to this archive.
the index could not be opened for updating
the archive could not be opened for updating
You do not have permissions to update the archive.
the name 'indexName' is longer than 55 characters
When adding to or updating an archive, you specified an
indexName that is longer than 55 characters (including
any "/" or "." characters).
the table size must be between 1 and 99999
The table size for creating an archive must be between
1 and 99999. The limit of 99999 was chosen to prevent
the accidental creation of ridiculously large archives.
warning, 'indexName' already in archive
While adding to an archive, the member to be added was
already in the archive. Use the -u option instead
(after making sure you had typed the member name
correctly).
warning, 'indexName' not found in archive
While updating an archive, the member to be updated was
not found in the archive. Use the -a option instead
(after making sure you had typed the member name
correctly).
warning, file 'fileName' could not be opened
A file to be added could not be opened (it does not
exist, or you do not have read permissions), or a file
to be extracted could not be opened (there is no disk
space, or you do not have write permissions).
FILES
archiveDir/maple.lib - the library archive file
archiveDir/maple.ind - the corresponding library index file
SEE ALSO
Other Maple related commands:
maple, mint, and updtsrc
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