BCOMPS(1) User Commands BCOMPS(1)

NAME

bcomps - biconnected components filter for graphs

SYNOPSIS

bcomps [ -stvx? ] [ -ooutfile ] [ files ]

DESCRIPTION

bcomps decomposes graphs into their biconnected components, printing
the components to standard output.

OPTIONS

The following options are supported:

-s No output graph is printed. Implies the -v flag.

-t Print the underlying block-cutvertex tree.

-x Each biconnected component is printed as a separate root
graph.

-v Prints number of blocks and cutvertices.

-o outfile
If specified, each root graph will be written to a different
file with the names derived from outfile. In particular, if
both -o and -x flags are used, then each block is written to a
different file. If outfile does not have a suffix, the nth
block of the ith graph is written to outfile_n_i. However, the
0th block of the 0th graph is written to outfile.

If outfile has a suffix, i.e., has the form base.sfx, then the
files will have the same name as above, except appended with
.sfx.

The block-cutvertex tree of ith graph is written to
outfile_n_T, with an appended suffix if specified.

By default, each input graph is printed, with each block given as a
subgraph whose name is a concatenation of the name of the input
graph, the string "_bcc_" and the number of the block.

OPERANDS

The following operand is supported:

files Names of files containing 1 or more graphs in dot format. If
no files operand is specified, the standard input will be
used.

RETURN CODES

bcomps returns 0 if all the input graphs are biconnected; and non-
zero if any graph has multiple blocks, or any error occurred.

BUGS

It is possible, though unlikely, that the names used for connected
components and their subgraphs may conflict with existing subgraph
names.

AUTHORS

Emden R. Gansner <erg@research.att.com>

SEE ALSO

ccomps(1), gc(1), dot(1), gvpr(1), gvcolor(1), acyclic(1), sccmap(1),
tred(1), libgraph(3)

18 November 2003 BCOMPS(1)