bcomps [ -stvx? ] [ -ooutfile ] [ files ]
bcomps decomposes graphs into their biconnected components, printing
the components to standard output.
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.
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 dif-
ferent 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
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.
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.
bcomps returns 0 if all the input graphs are biconnected; and non-zero
if any graph has multiple blocks, or any error occurred.
It is possible, though unlikely, that the names used for connected com-
ponents and their subgraphs may conflict with existing subgraph names.
Emden R. Gansner <firstname.lastname@example.org>
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