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.\" ========================================================================
.\"
.IX Title "BOTCH-GRAPH-SOURCES 1"
.TH BOTCH-GRAPH-SOURCES 1 "2023-09-22" "perl v5.36.0" "botch tools"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
botch\-graph\-sources \- find all sources (vertices without predecessors) in a graph in GraphML or dot format
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.IP "\fBbotch-graph-sources\fR [options] [\fIingraph\fR] [\fIoutgraph\fR]" 4
.IX Item "botch-graph-sources [options] [ingraph] [outgraph]"
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
Extract the subgraph of all sources (vertices without predecessors) in the
input graph.
.PP
If either (or both) of the positional arguments is/are omitted, then read
GraphML or dot from standard input and/or write GraphML or dot to standard
output, respectively.  Passing a '\-' as either argument, explicitly specifies
to read the input from standard input and write the output to standard output,
respectively.
.PP
The input graph type will be determined automatically. If the output graph is
given as a filename, then the output type will be GraphML if the filename ends
with .xml and dot if the filename ends with .dot. If the output is done on
standard output then it will happen in the same format as the input graph.
.SH "OPTIONS"
.IX Header "OPTIONS"
.IP "\fB\-h, \-\-help\fR" 4
.IX Item "-h, --help"
Display help.
.IP "\fB\-v, \-\-verbose\fR" 4
.IX Item "-v, --verbose"
Be verbose.
.SH "EXAMPLE"
.IX Header "EXAMPLE"
Find all source packages that build depend on \f(CW\*(C`texlive\-binaries:amd64 (=2015.20150524.37493\-5)\*(C'\fR.
.PP
Using package selection and reverse dependency cone computation by ceve:
.PP
.Vb 4
\&        dose\-ceve \-r "texlive\-binaries:amd64 (= 2015.20150524.37493\-5)" \-\-deb\-native\-arch=amd64 \-G pkg \-T grml deb://Packages debsrc://Sources \e
\&                | botch\-graph\-sources \- \- \e
\&                | botch\-graph2text \- "{realpackage} (= {realversion})" \-\-vertex type:src \e
\&                | sort
.Ve
.PP
Using package selection and ancestor vertex computation by botch:
.PP
.Vb 5
\&        dose\-ceve \-\-deb\-native\-arch=amd64 \-G pkg \-T grml deb://Packages debsrc://Sources \e
\&                | botch\-graph\-ancestors \- \- \-\-target realpackage:texlive\-binaries:amd64 realversion:2015.20150524.37493\-5 \e
\&                | botch\-graph\-sources \- \- \e
\&                | botch\-graph2text \- "{realpackage} (= {realversion})" \-\-vertex type:src \e
\&                | sort
.Ve
.SH "BUGS"
.IX Header "BUGS"
See <http://bugs.debian.org/botch>.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
Debian doc-base Manual \fI/usr/share/doc/botch/wiki/Home.html\fR
.SH "AUTHOR"
.IX Header "AUTHOR"
This man page was written by Johannes Schauer. Botch is written by Johannes
Schauer and Pietro Abate.
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2012\-2014 Johannes Schauer, Pietro Abate
.PP
This program is free software: you can redistribute it and/or modify it under
the terms of the \s-1GNU\s0 Lesser General Public License as published by the Free
Software Foundation, either version 3 of the License, or (at your option) any
later version. A special linking exception to the \s-1GNU\s0 Lesser General Public
License applies to this library, see the \s-1COPYING\s0 file for more information.