X-Git-Url: https://code.th-h.de/?p=usenet%2Fnewsstats.git;a=blobdiff_plain;f=groupstats.pl;h=c5b8b7d66af2922fe39534227d8fd3eb8104e798;hp=b1e31e93c4cdc8e90bdbb7795ada58d6f121a5a1;hb=78389b28e945178cad3f43a63e5d1091334e8dab;hpb=13c5a175ef0360ce37ab9986ef53695c64fd5095 diff --git a/groupstats.pl b/groupstats.pl index b1e31e9..c5b8b7d 100755 --- a/groupstats.pl +++ b/groupstats.pl @@ -1,173 +1,541 @@ -#! /usr/bin/perl -W -# -# groupstats.pl -# -# This script will get statistical data on newgroup usage -# form a database. -# -# It is part of the NewsStats package. -# -# Copyright (c) 2010 Thomas Hochstein -# -# It can be redistributed and/or modified under the same terms under -# which Perl itself is published. - -BEGIN { - our $VERSION = "0.01"; - use File::Basename; - push(@INC, dirname($0)); -} -use strict; - -use NewsStats qw(:DEFAULT :TimePeriods :Output :SQLHelper); - -use DBI; - -################################# Definitions ################################## - -# ... - -################################# Main program ################################# - -### read commandline options -my %Options = &ReadOptions('m:p:n:o:t:l:b:iscqdg:'); - -### read configuration -my %Conf = %{ReadConfig('newsstats.conf')}; - -### override configuration via commandline options -my %ConfOverride; -$ConfOverride{'DBTableGrps'} = $Options{'g'} if $Options{'g'}; -&OverrideConfig(\%Conf,\%ConfOverride); - -### check for incompatible command line options -# you can't mix '-t', '-b' and '-l' -# -b/-l take preference over -t, and -b takes preference over -l -if ($Options{'b'} or $Options{'l'}) { - if ($Options{'t'}) { - # drop -t - warn ("$MySelf: W: You cannot combine thresholds (-t) and top lists (-b) or levels (-l). Threshold '-t $Options{'t'}' was ignored.\n"); - undef($Options{'t'}); - }; - if ($Options{'b'} and $Options{'l'}) { - # drop -l - warn ("$MySelf: W: You cannot combine top lists (-b) and levels (-l). Level '-l $Options{'l'}' was ignored.\n"); - undef($Options{'l'}); - }; - # -q/-d don't work with -b or -l - warn ("$MySelf: W: Sorting by number of postings (-q) ignored due to top list mode (-b) / levels (-l).\n") if $Options{'q'}; - warn ("$MySelf: W: Reverse sorting (-d) ignored due to top list mode (-b) / levels (-l).\n") if $Options{'d'}; -}; - -### check output type -# default output type to 'dump' -$Options{'o'} = 'dump' if !$Options{'o'}; -# fail if more than one newsgroup is combined with 'dumpgroup' type -die ("$MySelf: E: You cannot combine newsgroup lists (-n) with more than one group with '-o dumpgroup'!\n") if ($Options{'o'} eq 'dumpgroup' and defined($Options{'n'}) and $Options{'n'} =~ /:|\*/); -# accept 'dumpgroup' only with -n -if ($Options{'o'} eq 'dumpgroup' and !defined($Options{'n'})) { - $Options{'o'} = 'dump'; - warn ("$MySelf: W: You must submit exactly one newsgroup ('-n news.group') for '-o dumpgroup'. Output type was set to 'dump'.\n"); -}; -# set output type to 'pretty' for -l -if ($Options{'l'}) { - $Options{'o'} = 'pretty'; - warn ("$MySelf: W: Output type forced to '-o pretty' due to usage of '-l'.\n"); -}; - -### get query type, default to 'postings' -#die "$MySelf: E: Unknown query type -q $Options{'q'}!\n" if ($Options{'q'} and !exists($LegalTypes{$Options{'q'}})); -#die "$MySelf: E: You must submit a threshold ('-t') for query type '-q $Options{'q'}'!\n" if ($Options{'q'} and !$Options{'t'}); - -### get time period -my ($StartMonth,$EndMonth) = &GetTimePeriod($Options{'m'},$Options{'p'}); -# reset to one month for 'dump' type -if ($Options{'o'} eq 'dump' and $Options{'p'}) { - $StartMonth = $EndMonth; - warn ("$MySelf: W: You cannot combine time periods (-p) with '-o dump'. Month was set to $StartMonth.\n"); -}; - -### init database -my $DBHandle = InitDB(\%Conf,1); - -### get data -# get list of newsgroups (-n) -my ($QueryPart,@GroupList); -my $Newsgroups = $Options{'n'}; -if ($Newsgroups) { - ($QueryPart,@GroupList) = &SQLGroupList($Newsgroups); -} else { - $QueryPart = 1; -}; - -# manage thresholds -if (defined($Options{'t'})) { - if ($Options{'i'}) { - $QueryPart .= ' AND postings < ?'; - } else { - $QueryPart .= ' AND postings > ?'; - }; - push @GroupList,$Options{'t'}; -} - -# construct WHERE clause -my $WhereClause = sprintf('month BETWEEN ? AND ? AND %s %s',$QueryPart,&SQLHierarchies($Options{'s'})); - -# get lenght of longest newsgroup delivered by query for formatting purposes -my $MaxLength = &GetMaxLenght($DBHandle,$Conf{'DBTableGrps'},'newsgroup',$WhereClause,$StartMonth,$EndMonth,@GroupList); - -my ($OrderClause,$DBQuery); -# -b (best of) defined? -if (!defined($Options{'b'}) and !defined($Options{'l'})) { - $OrderClause = 'newsgroup'; - $OrderClause = 'postings' if $Options{'q'}; - $OrderClause .= ' DESC' if $Options{'d'}; - # do query: get number of postings per group from groups table for given months and newsgroups - $DBQuery = $DBHandle->prepare(sprintf("SELECT month,newsgroup,postings FROM %s.%s WHERE %s ORDER BY month,%s",$Conf{'DBDatabase'},$Conf{'DBTableGrps'},$WhereClause,$OrderClause)); -} elsif ($Options{'b'}) { - # set sorting order (-i) - if ($Options{'i'}) { - $OrderClause = 'postings'; - } else { - $OrderClause = 'postings DESC'; - }; - # push LIMIT to GroupList to match number of binding vars - push @GroupList,$Options{'b'}; - # do query: get sum of postings per group from groups table for given months and newsgroups with LIMIT - $DBQuery = $DBHandle->prepare(sprintf("SELECT newsgroup,SUM(postings) AS postings FROM %s.%s WHERE %s GROUP BY newsgroup ORDER BY %s,newsgroup LIMIT ?",$Conf{'DBDatabase'},$Conf{'DBTableGrps'},$WhereClause,$OrderClause)); -} else { # -l - # set sorting order (-i) - if ($Options{'i'}) { - $OrderClause = '<'; - } else { - $OrderClause = '>'; - }; - # push level and $StartMonth,$EndMonth - again - to GroupList to match number of binding vars - push @GroupList,$Options{'l'}; - push @GroupList,$StartMonth,$EndMonth; - # do query: get number of postings per group from groups table for given months and - $DBQuery = $DBHandle->prepare(sprintf("SELECT month,newsgroup,postings FROM %s.%s WHERE newsgroup IN (SELECT newsgroup FROM %s.%s WHERE %s GROUP BY newsgroup HAVING MAX(postings) %s ?) AND %s ORDER BY newsgroup,month",$Conf{'DBDatabase'},$Conf{'DBTableGrps'},$Conf{'DBDatabase'},$Conf{'DBTableGrps'},$WhereClause,$OrderClause,$WhereClause)); -}; - -# execute query -$DBQuery->execute($StartMonth,$EndMonth,@GroupList) or die sprintf("$MySelf: E: Can't get groups data for %s to %s from %s.%s: %s\n",$StartMonth,$EndMonth,$Conf{'DBDatabase'},$Conf{'DBTableGrps'},$DBI::errstr); - -# output result -printf ("----- Report from %s to %s\n",$StartMonth,$EndMonth) if $Options{'c'} and ($Options{'m'} or $Options{'p'}); -printf ("----- Newsgroups: %s\n",join(',',split(/:/,$Newsgroups))) if $Options{'c'} and $Options{'n'}; -printf ("----- Threshold: %s %u\n",$Options{'i'} ? '<' : '>',$Options{'t'}) if $Options{'c'} and $Options{'t'}; -if (!defined($Options{'b'}) and !defined($Options{'l'})) { - &OutputData($Options{'o'},$DBQuery,$MaxLength); -} elsif ($Options{'b'}) { - while (my ($Newsgroup,$Postings) = $DBQuery->fetchrow_array) { - print &FormatOutput($Options{'o'}, ($Options{'i'} ? 'Bottom ' : 'Top ').$Options{'b'}, $Newsgroup, $Postings, $MaxLength); - }; -} else { # -l - while (my ($Month,$Newsgroup,$Postings) = $DBQuery->fetchrow_array) { - print &FormatOutput($Options{'o'}, $Newsgroup, $Month, $Postings, 7); - }; -}; - -### close handles -$DBHandle->disconnect; - +#! /usr/bin/perl -W +# +# groupstats.pl +# +# This script will get statistical data on newgroup usage +# form a database. +# +# It is part of the NewsStats package. +# +# Copyright (c) 2010 Thomas Hochstein +# +# It can be redistributed and/or modified under the same terms under +# which Perl itself is published. + +BEGIN { + our $VERSION = "0.01"; + use File::Basename; + push(@INC, dirname($0)); +} +use strict; + +use NewsStats qw(:DEFAULT :TimePeriods :Output :SQLHelper); + +use DBI; + +################################# Main program ################################# + +### read commandline options +my %Options = &ReadOptions('m:p:an:o:t:l:b:iscqdf:g:'); + +### read configuration +my %Conf = %{ReadConfig('newsstats.conf')}; + +### override configuration via commandline options +my %ConfOverride; +$ConfOverride{'DBTableGrps'} = $Options{'g'} if $Options{'g'}; +&OverrideConfig(\%Conf,\%ConfOverride); + +### check for incompatible command line options +# you can't mix '-t', '-b' and '-l' +# -b/-l take preference over -t, and -b takes preference over -l +# you can't use '-f' with '-b' or '-l' +if ($Options{'b'} or $Options{'l'}) { + if ($Options{'f'}) { + # drop -f + warn ("$MySelf: W: You cannot save the report to monthly files when using top lists (-b) or levels (-l). Filename template '-f $Options{'f'}' was ignored.\n"); + undef($Options{'f'}); + }; + if ($Options{'t'}) { + # drop -t + warn ("$MySelf: W: You cannot combine thresholds (-t) and top lists (-b) or levels (-l). Threshold '-t $Options{'t'}' was ignored.\n"); + undef($Options{'t'}); + }; + if ($Options{'b'} and $Options{'l'}) { + # drop -l + warn ("$MySelf: W: You cannot combine top lists (-b) and levels (-l). Level '-l $Options{'l'}' was ignored.\n"); + undef($Options{'l'}); + }; + # -q/-d don't work with -b or -l + warn ("$MySelf: W: Sorting by number of postings (-q) ignored due to top list mode (-b) / levels (-l).\n") if $Options{'q'}; + warn ("$MySelf: W: Reverse sorting (-d) ignored due to top list mode (-b) / levels (-l).\n") if $Options{'d'}; +}; + +### check output type +# default output type to 'dump' +$Options{'o'} = 'dump' if !$Options{'o'}; +# fail if more than one newsgroup is combined with 'dumpgroup' type +die ("$MySelf: E: You cannot combine newsgroup lists (-n) with more than one group with '-o dumpgroup'!\n") if ($Options{'o'} eq 'dumpgroup' and defined($Options{'n'}) and $Options{'n'} =~ /:|\*/); +# accept 'dumpgroup' only with -n +if ($Options{'o'} eq 'dumpgroup' and !defined($Options{'n'})) { + $Options{'o'} = 'dump'; + warn ("$MySelf: W: You must submit exactly one newsgroup ('-n news.group') for '-o dumpgroup'. Output type was set to 'dump'.\n"); +}; +# set output type to 'pretty' for -l +if ($Options{'l'}) { + $Options{'o'} = 'pretty'; + warn ("$MySelf: W: Output type forced to '-o pretty' due to usage of '-l'.\n"); +}; + +### init database +my $DBHandle = InitDB(\%Conf,1); + +### get time period +my ($StartMonth,$EndMonth); +# if '-a' is set, set start/end month from database +# FIXME - it doesn't make that much sense to get first/last month from database to query it +# with a time period that equals no time period ... +if ($Options{'a'}) { + undef($Options{'m'}); + undef($Options{'p'}); + my $DBQuery = $DBHandle->prepare(sprintf("SELECT MIN(month),MAX(month) FROM %s.%s",$Conf{'DBDatabase'},$Conf{'DBTableGrps'})); + $DBQuery->execute or die sprintf("$MySelf: E: Can't get MIN/MAX month from %s.%s: %s\n",$Conf{'DBDatabase'},$Conf{'DBTableGrps'},$DBI::errstr); + ($StartMonth,$EndMonth) = $DBQuery->fetchrow_array; +} else { + ($StartMonth,$EndMonth) = &GetTimePeriod($Options{'m'},$Options{'p'}); +}; +# if time period is more than one month: set output type to '-o pretty' or '-o dumpgroup' +if ($Options{'o'} eq 'dump' and ($Options{'p'} or $Options{'a'})) { + if (defined($Options{'n'}) and $Options{'n'} !~ /:|\*/) { + # just one newsgroup is defined + warn ("$MySelf: W: You cannot combine time periods (-p) with '-o dump', changing output type to '-o dumpgroup'.\n"); + $Options{'o'} = 'dumpgroup'; + } elsif (!defined($Options{'f'})) { + # more than one newsgroup - and no file output + warn ("$MySelf: W: You cannot combine time periods (-p) with '-o dump', changing output type to '-o pretty'.\n"); + $Options{'o'} = 'pretty'; + } +}; + +### create report +# get list of newsgroups (-n) +my ($QueryGroupList,$QueryThreshold,@GroupList,@Params); +my $Newsgroups = $Options{'n'}; +if ($Newsgroups) { + # explode list of newsgroups for WHERE clause + ($QueryGroupList,@GroupList) = &SQLGroupList($Newsgroups); +} else { + # set to dummy value (always true) + $QueryGroupList = 1; +}; + +# manage thresholds +if (defined($Options{'t'})) { + if ($Options{'i'}) { + # -i: list groups below threshold + $QueryThreshold .= ' postings < ?'; + } else { + # default: list groups above threshold + $QueryThreshold .= ' postings > ?'; + }; + # push threshold to Params + push @Params,$Options{'t'}; +} else { + # set to dummy value (always true) + $QueryThreshold = 1; +} + +# construct WHERE clause +# $QueryGroupList is "list of newsgroup" (or 1), +# $QueryThreshold is threshold definition (or 1), +# &SQLHierarchies() takes care of the exclusion of hierarchy levels (.ALL) +# according to setting of -s +my $WhereClause = sprintf('month BETWEEN ? AND ? AND %s AND %s %s',$QueryGroupList,$QueryThreshold,&SQLHierarchies($Options{'s'})); + +# get length of longest newsgroup delivered by query for formatting purposes +# FIXME +my $MaxLength = &GetMaxLenght($DBHandle,$Conf{'DBTableGrps'},'newsgroup',$WhereClause,$StartMonth,$EndMonth,(@GroupList,@Params)); + +my ($OrderClause,$DBQuery); +# -b (best of / top list) defined? +if (!defined($Options{'b'}) and !defined($Options{'l'})) { + # default: neither -b nor -l + # set ordering (ORDER BY) to "newsgroups" or "postings", "ASC" or "DESC" + # according to -q and -d + $OrderClause = 'newsgroup'; + $OrderClause = 'postings' if $Options{'q'}; + $OrderClause .= ' DESC' if $Options{'d'}; + # prepare query: get number of postings per group from groups table for given months and newsgroups + $DBQuery = $DBHandle->prepare(sprintf("SELECT month,newsgroup,postings FROM %s.%s WHERE %s ORDER BY month,%s",$Conf{'DBDatabase'},$Conf{'DBTableGrps'},$WhereClause,$OrderClause)); +} elsif ($Options{'b'}) { + # -b is set (then -l can't be!) + # set sorting order (-i): top or flop list? + if ($Options{'i'}) { + $OrderClause = 'postings'; + } else { + $OrderClause = 'postings DESC'; + }; + # set -b to 10 if < 1 (Top 10) + $Options{'b'} = 10 if $Options{'b'} !~ /^\d*$/ or $Options{'b'} < 1; + # push LIMIT to Params + push @Params,$Options{'b'}; + # prepare query: get sum of postings per group from groups table for given months and newsgroups with LIMIT + $DBQuery = $DBHandle->prepare(sprintf("SELECT newsgroup,SUM(postings) AS postings FROM %s.%s WHERE %s GROUP BY newsgroup ORDER BY %s,newsgroup LIMIT ?",$Conf{'DBDatabase'},$Conf{'DBTableGrps'},$WhereClause,$OrderClause)); +} else { + # -l must be set now, as all other cases have been taken care of + # which kind of level (-i): more than -l x or less than -l x? + my ($Level); + if ($Options{'i'}) { + $Level = '<'; + } else { + $Level = '>'; + }; + # prepare and execute query: get list of newsgroups meeting level condition + $DBQuery = $DBHandle->prepare(sprintf("SELECT newsgroup FROM %s.%s WHERE %s GROUP BY newsgroup HAVING MAX(postings) %s ?",$Conf{'DBDatabase'},$Conf{'DBTableGrps'},$WhereClause,$Level)); + $DBQuery->execute($StartMonth,$EndMonth,@GroupList,$Options{'l'}) + or die sprintf("$MySelf: E: Can't get groups data for %s to %s from %s.%s: %s\n",$StartMonth,$EndMonth,$Conf{'DBDatabase'},$Conf{'DBTableGrps'},$DBI::errstr); + # add newsgroups to a comma-seperated list ready for IN(...) query + my $GroupList; + while (my ($Newsgroup) = $DBQuery->fetchrow_array) { + $GroupList .= ',' if (defined($GroupList) and $GroupList ne ''); + $GroupList .= "'$Newsgroup'"; + }; + $DBQuery = $DBHandle->prepare(sprintf("SELECT month,newsgroup,postings FROM %s.%s WHERE newsgroup IN (%s) AND %s ORDER BY newsgroup,month",$Conf{'DBDatabase'},$Conf{'DBTableGrps'},$GroupList,$WhereClause)); +}; + +# execute query +$DBQuery->execute($StartMonth,$EndMonth,@GroupList,@Params) + or die sprintf("$MySelf: E: Can't get groups data for %s to %s from %s.%s: %s\n",$StartMonth,$EndMonth,$Conf{'DBDatabase'},$Conf{'DBTableGrps'},$DBI::errstr); + +# output results +# reset caption (-c) if -f is set +undef($Options{'c'}) if $Options{'f'}; +# print caption (-c) with time period if -m or -p is set +if ($Options{'c'}) { + if ($Options{'p'}) { + printf ("----- Report from %s to %s\n",$StartMonth,$EndMonth); + } elsif ($Options{'m'}) { + printf ("----- Report for %s\n",$StartMonth); + }; +}; +# print caption (-c) with newsgroup list if -n is set +printf ("----- Newsgroups: %s\n",join(',',split(/:/,$Newsgroups))) if $Options{'c'} and $Options{'n'}; +# print caption (-c) with threshold if -t is set, taking -i in account +printf ("----- Threshold: %s %u\n",$Options{'i'} ? '<' : '>',$Options{'t'}) if $Options{'c'} and $Options{'t'}; +if (!defined($Options{'b'}) and !defined($Options{'l'})) { + # default: neither -b nor -l + &OutputData($Options{'o'},$Options{'f'},$DBQuery,$MaxLength); +} elsif ($Options{'b'}) { + # -b is set (then -l can't be!) + # we have to read in the query results ourselves, as they do not have standard layout + while (my ($Newsgroup,$Postings) = $DBQuery->fetchrow_array) { + # we just assign "top x" or "bottom x" instead of a month for the caption and force an output type of pretty + print &FormatOutput('pretty', ($Options{'i'} ? 'Bottom ' : 'Top ').$Options{'b'}, $Newsgroup, $Postings, $MaxLength); + }; +} else { + # -l must be set now, as all other cases have been taken care of + # print caption (-c) with level, taking -i in account + printf ("----- Newsgroups with %s than %u postings over the whole time period\n",$Options{'i'} ? 'less' : 'more',$Options{'l'}) if $Options{'c'}; + # we have to read in the query results ourselves, as they do not have standard layout + while (my ($Month,$Newsgroup,$Postings) = $DBQuery->fetchrow_array) { + # we just switch $Newsgroups and $Month for output generation + print &FormatOutput($Options{'o'}, $Newsgroup, $Month, $Postings, 7); + }; +}; + +### close handles +$DBHandle->disconnect; + +__END__ + +################################ Documentation ################################# + +=head1 NAME + +groupstats - create reports on newsgroup usage + +=head1 SYNOPSIS + +B [B<-Vhiscqd>] [B<-m> I | B<-p> I | B<-a>] [B<-n> I] [B<-t> I] [B<-l> I] [B<-b> I] [B<-o> I] [B<-f> I] [B<-g> I] + +=head1 REQUIREMENTS + +See doc/README: Perl 5.8.x itself and the following modules from CPAN: + +=over 2 + +=item - + +Config::Auto + +=item - + +DBI + +=back + +=head1 DESCRIPTION + +This script create reports on newsgroup usage (number of postings per +group per month) taken from result tables created by +F. + +The time period to act on defaults to last month; you can assign +another month via the B<-m> switch or a time period via the B<-p> +switch; the latter takes preference. + +B will process all newsgroups by default; you can limit +that to only some newsgroups by supplying a list of those groups via +B<-n> (see below). You can include hierarchy levels in the output by +adding the B<-s> switch (see below). + +Furthermore you can set a threshold via B<-t> so that only newsgroups +with more postings per month will be included in the report. You can +invert that by the B<-i> switch so only newsgroups with less than +I postings per month will be included. + +You can sort the output by number of postings per month instead of the +default (alphabetical list of newsgroups) by using B<-q>; you can +reverse the sorting order (from highest to lowest or in reversed +alphabetical order) by using B<-d>. + +Furthermore, you can create a list of newsgroups that had consistently +more (or less) than x postings per month during the whole report +period by using B<-l> (together with B as needed). + +Last but not least you can create a "best of" list of the top x +newsgroups via B<-b> (or a "worst of" list by adding B). + +By default, B will dump a very simple alphabetical list of +newsgroups, one per line, followed by the number of postings in that +month. This output format of course cannot sensibly be combined with +time periods, so you can set the output format by using B<-o> (see +below). Captions can be added by setting the B<-c> switch. + +=head2 Configuration + +B will read its configuration from F +which should be present in the same directory via Config::Auto. + +See doc/INSTALL for an overview of possible configuration options. + +You can override configuration options via the B<-g> switch. + +=head1 OPTIONS + +=over 3 + +=item B<-V> (version) + +Print out version and copyright information on B and exit. + +=item B<-h> (help) + +Print this man page and exit. + +=item B<-m> I (month) + +Set processing period to a month in YYYY-MM format. Ignored if B<-p> +or B<-a> is set. + +=item B<-p> I (period) + +Set processing period to a time period between two month, each in +YYYY-MM format, separated by a colon. Overrides B<-m>. Ignored if +B<-a> is set. + +=item B<-a> (all) + +Set no processing period (process whole database). Overrides B<-m> +and B<-p>. + +=item B<-n> I (newsgroups) + +Limit processing to a certain set of newsgroups. I can +be a single newsgroup name (de.alt.test), a newsgroup hierarchy +(de.alt.*) or a list of either of these, separated by colons, for +example + + de.test:de.alt.test:de.newusers.* + +=item B<-t> I (threshold) + +Only include newsgroups with more than I postings per +month. Can be inverted by the B<-i> switch so that only newsgroups +with less than I postings will be included. + +This setting will be ignored if B<-l> or B<-b> is set. + +=item B<-l> I (level) + +Only include newsgroups with more than I postings per +month, every month during the whole reporting period. Can be inverted +by the B<-i> switch so that only newsgroups with less than I +postings every single month will be included. Output will be ordered +by newsgroup name, followed by month. + +This setting will be ignored if B<-b> is set. Overrides B<-t> and +can't be used together with B<-q>, B<-d> or B<-f>. + +=item B<-b> I (best of) + +Create a list of the I newsgroups with the most postings over the +whole reporting period. Can be inverted by the B<-i> switch so that a +list of the I newsgroups with the least postings over the whole +period is generated. Output will be ordered by sum of postings. + +Overrides B<-t> and B<-l> and can't be used together with B<-q>, B<-d> +or B<-f>. Output format is set to I (see below). + +=item B<-i> (invert) + +Used in conjunction with B<-t>, B<-l> or B<-b> to set a lower +threshold or level or generate a "bottom list" instead of a top list. + +=item B<-s> (sum per hierarchy level) + +Include "virtual" groups for every hierarchy level in output, for +example: + + de.alt.ALL 10 + de.alt.test 5 + de.alt.admin 7 + +See the B man page for details. + +=item B<-o> I (output format) + +Set output format. Default is I, consisting of an alphabetical +list of newsgroups, each on a new line, followed by the number of +postings in that month. This default format can't be used with time +periods of more than one month. + +I format is like I, but will print the month in front of +the newsgroup name. + +I format can only be use with a group list (see B<-n>) of +exactly one newsgroup and is like I, but will output months, +followed by the number of postings. + +If you don't need easily parsable output, you'll mostly use I +format, which will print a header for each new month and try to align +newsgroup names and posting counts. Usage of B<-b> will force this +format. + +=item B<-c> (captions) + +Add captions to output (reporting period, newsgroups list, threshold +and so on). + +This setting will be ignored if B<-f> is set. + +=item B<-q> (quantity of postings) + +Sort by number of postings instead of by newsgroup names. + +Cannot be used with B<-l> or B<-b>. + +=item B<-d> (descending) + +Change sort order to descending. + +Cannot be used with B<-l> or B<-b>. + +=item B<-f> I (output file) + +Save output to file instead of dumping it to STDOUT. B +will create one file for each month, with filenames composed by +adding year and month to the I, for example +with B<-f> I: + + stats-2010-01 + stats-2010-02 + ... and so on + +This setting will be ignored if B<-l> or B<-b> is set. Output format +is set to I (see above). + +=item B<-g> I (postings per group table) + +Override I from F. + +=back + +=head1 INSTALLATION + +See doc/INSTALL. + +=head1 EXAMPLES + +Show number of postings per group for lasth month in I format: + + groupstats + +Show that report for January of 2010 and de.alt.* plus de.test, +including display of hierarchy levels: + + groupstats -m 2010-01 -n de.alt.*:de.test -s + +Show that report for the year of 2010 in I format: + + groupstats -p 2010-01:2010-12 -o pretty + +Only show newsgroups with less than 30 postings last month, ordered +by number of postings, descending, in I format: + + groupstats -iqdt 30 -o pretty + +Show top 10 for the first half-year of of 2010 in I format: + + groupstats -p 2010-01:2010-06 -b 10 -o pretty + +Report all groups that had less than 30 postings every singele month +in the year of 2010 (I format is forced) + + groupstats -p 2010-01:2010-12 -il 30 + +=head1 FILES + +=over 4 + +=item F + +The script itself. + +=item F + +Library functions for the NewsStats package. + +=item F + +Runtime configuration file for B. + +=back + +=head1 BUGS + +Please report any bugs or feature requests to the author or use the +bug tracker at L! + +=head1 SEE ALSO + +=over 2 + +=item - + +doc/README + +=item - + +doc/INSTALL + +=item - + +gatherstats -h + +=back + +This script is part of the B package. + +=head1 AUTHOR + +Thomas Hochstein + +=head1 COPYRIGHT AND LICENSE + +Copyright (c) 2010 Thomas Hochstein + +This program is free software; you may redistribute it and/or modify it +under the same terms as Perl itself. + +=cut