#
# Library functions for the NewsStats package.
#
-# Copyright (c) 2010 Thomas Hochstein <thh@inter.net>
+# Copyright (c) 2010-2012 Thomas Hochstein <thh@inter.net>
#
# This module can be redistributed and/or modified under the same terms under
# which Perl itself is published.
require Exporter;
@ISA = qw(Exporter);
@EXPORT = qw(
- $MySelf
$MyVersion
$PackageVersion
- ReadOptions
+ $FullPath
+ $HomePath
+ ShowVersion
+ ShowPOD
ReadConfig
OverrideConfig
InitDB
+ Bleat
);
@EXPORT_OK = qw(
GetTimePeriod
LastMonth
- CheckMonth
SplitPeriod
ListMonth
ListNewsgroups
OutputData
FormatOutput
SQLHierarchies
+ SQLSortOrder
SQLGroupList
+ SQLSetBounds
+ SQLBuildClause
GetMaxLength
);
-%EXPORT_TAGS = ( TimePeriods => [qw(GetTimePeriod LastMonth CheckMonth SplitPeriod ListMonth)],
+%EXPORT_TAGS = ( TimePeriods => [qw(GetTimePeriod LastMonth SplitPeriod
+ ListMonth)],
Output => [qw(OutputData FormatOutput)],
- SQLHelper => [qw(SQLHierarchies SQLGroupList GetMaxLength)]);
+ SQLHelper => [qw(SQLHierarchies SQLSortOrder SQLGroupList
+ SQLSetBounds SQLBuildClause GetMaxLength)]);
$VERSION = '0.01';
our $PackageVersion = '0.01';
use Data::Dumper;
use File::Basename;
-use Getopt::Std;
use Config::Auto;
use DBI;
#####-------------------------------- Vars --------------------------------#####
-our $MySelf = fileparse($0, '.pl');
-our $MyVersion = "$MySelf $::VERSION (NewsStats.pm $VERSION)";
+# trim the path
+our $FullPath = $0;
+our $HomePath = dirname($0);
+$0 =~ s%.*/%%;
+# set version string
+our $MyVersion = "$0 $::VERSION (NewsStats.pm $VERSION)";
#####------------------------------- Basics -------------------------------#####
-################################################################################
-sub ReadOptions {
-################################################################################
-### read commandline options and act on standard options -h and -V
-### IN : $Params: list of legal commandline paramaters (without -h and -V)
-### OUT: a hash containing the commandline options
- $Getopt::Std::STANDARD_HELP_VERSION = 1;
-
- my ($Params) = @_;
- my %Options;
-
- getopts('Vh'.$Params, \%Options);
-
- # -V: display version
- &ShowVersion if ($Options{'V'});
-
- # -h: feed myself to perldoc
- &ShowPOD if ($Options{'h'});
-
- return %Options;
-};
################################################################################
################################################################################
sub ShowVersion {
################################################################################
### display version and exit
- print "NewsStats v$PackageVersion\n$MyVersion\nCopyright (c) 2010 Thomas Hochstein <thh\@inter.net>\n";
- print "This program is free software; you may redistribute it and/or modify it under the same terms as Perl itself.\n";
+ print "NewsStats v$PackageVersion\n$MyVersion\n";
+ print "Copyright (c) 2010-2012 Thomas Hochstein <thh\@inter.net>\n";
+ print "This program is free software; you may redistribute it ".
+ "and/or modify it under the same terms as Perl itself.\n";
exit(100);
};
################################################################################
sub ShowPOD {
################################################################################
### feed myself to perldoc and exit
- exec('perldoc', $0);
+ exec('perldoc', $FullPath);
exit(100);
};
################################################################################
################################################################################
################################################################################
-sub OverrideConfig {
+sub OverrideConfig {
################################################################################
### override configuration values
### IN : $ConfigR : reference to configuration hash
my ($ConfigR,$OverrideR) = @_;
my %Override = %$OverrideR;
# Config hash empty?
- warn "$MySelf W: Empty configuration hash passed to OverrideConfig().\n" if ( keys %$ConfigR < 1);
+ &Bleat(1,"Empty configuration hash passed to OverrideConfig()")
+ if ( keys %$ConfigR < 1);
# return if no overrides
return if (keys %Override < 1 or keys %$ConfigR < 1);
foreach my $Key (keys %Override) {
### OUT: DBHandle
my ($ConfigR,$Die) = @_;
my %Conf = %$ConfigR;
- my $DBHandle = DBI->connect(sprintf('DBI:%s:database=%s;host=%s',$Conf{'DBDriver'},$Conf{'DBDatabase'},$Conf{'DBHost'}), $Conf{'DBUser'}, $Conf{'DBPw'}, { PrintError => 0 });
+ my $DBHandle = DBI->connect(sprintf('DBI:%s:database=%s;host=%s',
+ $Conf{'DBDriver'},$Conf{'DBDatabase'},
+ $Conf{'DBHost'}), $Conf{'DBUser'},
+ $Conf{'DBPw'}, { PrintError => 0 });
if (!$DBHandle) {
- die ("$MySelf: E: $DBI::errstr\n") if (defined($Die) and $Die);
- warn("$MySelf: W: $DBI::errstr\n");
+ &Bleat(2,$DBI::errstr) if (defined($Die) and $Die);
+ &Bleat(1,$DBI::errstr);
};
return $DBHandle;
};
################################################################################
+################################################################################
+sub Bleat {
+################################################################################
+### print warning or error messages and terminate in case of error
+### IN : $Level : 1 = warning, 2 = error
+### $Message: warning or error message
+ my ($Level,$Message) = @_;
+ if ($Level == 1) {
+ warn "$0 W: $Message\n"
+ } elsif ($Level == 2) {
+ die "$0 E: $Message\n"
+ } else {
+ print "$0: $Message\n"
+ }
+};
+################################################################################
+
#####------------------------------ GetStats ------------------------------#####
################################################################################
next if($TLH and !/^$TLH/);
# don't count invalid newsgroups
if(%ValidGroups and !defined($ValidGroups{$_})) {
- warn (sprintf("DROPPED: %s\n",$_));
+ &Bleat(1,sprintf("DROPPED: %s",$_));
next;
}
# add original newsgroup to %Newsgroups
### OUT: \%ValidGroups: hash containing all valid newsgroups
my ($Filename) = @_;
my %ValidGroups;
- open (my $LIST,"<$Filename") or die "$MySelf: E: Cannot read $Filename: $!\n";
+ open (my $LIST,"<$Filename") or &Bleat(2,"Cannot read $Filename: $!");
while (<$LIST>) {
s/^(\S+).*$/$1/;
chomp;
################################################################################
sub GetTimePeriod {
################################################################################
-### get a time period to act on, in order of preference: by default the
-### last month; or a month submitted by -m YYYY-MM; or a time period submitted
-### by -p YYYY-MM:YYYY-MM
-### IN : $Month,$Period: contents of -m and -p
-### OUT: $StartMonth, $EndMonth (identical if period is just one month)
- my ($Month,$Period) = @_;
- # exit if -m is set and not like YYYY-MM
- die "$MySelf: E: Wrong date format - use '$MySelf -m YYYY-MM'!\n" if not &CheckMonth($Month);
- # warn if -m and -p is set
- warn "$MySelf: W: Time period assigned by '-p' takes precendece over month assigned by '-m'.\n" if ($Month && $Period);
- # default: set -m to last month
- $Month = &LastMonth if (!defined($Month) and !defined($Period));
- # set $StartMonth, $EndMonth
- my ($StartMonth, $EndMonth);
- if ($Period) {
- # -p: get date range
- ($StartMonth, $EndMonth) = &SplitPeriod($Period);
- die "$MySelf: E: Wrong format for time period - use '$MySelf -p YYYY-MM:YYYY-MM'!\n" if !defined($StartMonth);
+### get a time period to act on from --month option;
+### if empty, default to last month
+### IN : $Month: may be empty, 'YYYY-MM', 'YYYY-MM:YYYY-MM' or 'all'
+### OUT: $Verbal,$SQL: verbal description and WHERE-clause
+### of the chosen time period
+ my ($Month) = @_;
+ # define result variables
+ my ($Verbal, $SQL);
+ # define a regular expression for a month
+ my $REMonth = '\d{4}-\d{2}';
+
+ # default to last month if option is not set
+ if(!$Month) {
+ $Month = &LastMonth;
+ }
+
+ # check for valid input
+ if ($Month =~ /^$REMonth$/) {
+ # single month (YYYY-MM)
+ ($Month) = &CheckMonth($Month);
+ $Verbal = $Month;
+ $SQL = sprintf("month = '%s'",$Month);
+ } elsif ($Month =~ /^$REMonth:$REMonth$/) {
+ # time period (YYYY-MM:YYYY-MM)
+ $Verbal = sprintf('%s to %s',&SplitPeriod($Month));
+ $SQL = sprintf("month BETWEEN '%s' AND '%s'",&SplitPeriod($Month));
+ } elsif ($Month =~ /^all$/i) {
+ # special case: ALL
+ $Verbal = 'all time';
+ $SQL = '';
} else {
- # set $StartMonth = $EndMonth = $Month if -p is not set
- $StartMonth = $EndMonth = $Month;
- };
- return ($StartMonth, $EndMonth);
+ # invalid input
+ return (undef,undef);
+ }
+
+ return ($Verbal,$SQL);
};
################################################################################
################################################################################
sub CheckMonth {
################################################################################
-### check if input is a valid month in YYYY-MM form
-### IN : $Month: month
-### OUT: TRUE / FALSE
- my ($Month) = @_;
- return 0 if (defined($Month) and $Month !~ /^\d{4}-\d{2}$/);
- return 1;
+### check if input (in YYYY-MM form) is valid with MM between 01 and 12;
+### otherwise, fix it
+### IN : @Month: array of month
+### OUT: @Month: a valid month
+ my (@Month) = @_;
+ foreach my $Month (@Month) {
+ my ($OldMonth) = $Month;
+ my ($CalMonth) = substr ($Month, -2);
+ if ($CalMonth < 1 or $CalMonth > 12) {
+ $CalMonth = '12' if $CalMonth > 12;
+ $CalMonth = '01' if $CalMonth < 1;
+ substr($Month, -2) = $CalMonth;
+ &Bleat(1,sprintf("'%s' is an invalid date (MM must be between '01' ".
+ "and '12'), set to '%s'.",$OldMonth,$Month));
+ }
+ }
+ return @Month;
};
################################################################################
################################################################################
### split a time period denoted by YYYY-MM:YYYY-MM into start and end month
### IN : $Period: time period
-### OUT: $StartMonth, Â$EndMonth
+### OUT: $StartMonth, $EndMonth
my ($Period) = @_;
- return (undef,undef) if $Period !~ /^\d{4}-\d{2}:\d{4}-\d{2}$/;
my ($StartMonth, $EndMonth) = split /:/, $Period;
+ ($StartMonth,$EndMonth) = CheckMonth($StartMonth,$EndMonth);
# switch parameters as necessary
if ($EndMonth gt $StartMonth) {
return ($StartMonth, $EndMonth);
### IN : $StartMonth, $EndMonth
### OUT: @Months: array containing all months from $StartMonth to $EndMonth
my ($StartMonth, $EndMonth) = @_;
- return (undef,undef) if ($StartMonth !~ /^\d{4}-\d{2}$/ or $EndMonth !~ /^\d{4}-\d{2}$/);
+ return (undef,undef)
+ if ($StartMonth !~ /^\d{4}-\d{2}$/ or $EndMonth !~ /^\d{4}-\d{2}$/);
# return if $StartMonth = $EndMonth
return ($StartMonth) if ($StartMonth eq $EndMonth);
# set $Year, $Month from $StartMonth
sub OutputData {
################################################################################
### read database query results from DBHandle and print results with formatting
-### IN : $Format : format specifier
-### $FileName: file name template (-f): filename-YYYY-MM
-### $DBQuery : database query handle with executed query,
+### IN : $Format : format specifier
+### $Comments : print or suppress all comments for machine-readable output
+### $GroupBy : primary sorting order (month or key)
+### $Precision: number of digits right of decimal point (0 or 2)
+### $ValidKeys: reference to a hash containing all valid keys
+### $FileTempl: file name template (--filetemplate): filetempl-YYYY-MM
+### $DBQuery : database query handle with executed query,
### containing $Month, $Key, $Value
-### $PadGroup: padding length for newsgroups field (optional) for 'pretty'
- my ($Format, $FileName, $DBQuery, $PadGroup) = @_;
- my ($Handle, $OUT);
+### $PadGroup : padding length for key field (optional) for 'pretty'
+ my ($Format, $Comments, $GroupBy, $Precision, $ValidKeys, $FileTempl,
+ $DBQuery, $PadGroup) = @_;
+ my %ValidKeys = %{$ValidKeys} if $ValidKeys;
+ my ($FileName, $Handle, $OUT);
our $LastIteration;
+
+ # define output types
+ my %LegalOutput;
+ @LegalOutput{('dump',,'list','pretty')} = ();
+ # bail out if format is unknown
+ &Bleat(2,"Unknown output type '$Format'!") if !exists($LegalOutput{$Format});
+
while (my ($Month, $Key, $Value) = $DBQuery->fetchrow_array) {
+ # don't display invalid keys
+ if(%ValidKeys and !defined($ValidKeys{$Key})) {
+ # FIXME
+ # &Bleat(1,sprintf("DROPPED: %s",$Key));
+ next;
+ };
+ # care for correct sorting order and abstract from month and keys:
+ # $Caption will be $Month or $Key, according to sorting order,
+ # and $Key will be $Key or $Month, respectively
+ my $Caption;
+ if ($GroupBy eq 'key') {
+ $Caption = $Key;
+ $Key = $Month;
+ } else {
+ $Caption = $Month;
+ }
# set output file handle
- if (!$FileName) {
+ if (!$FileTempl) {
$Handle = *STDOUT{IO}; # set $Handle to a reference to STDOUT
- } elsif (!defined($LastIteration) or $LastIteration ne $Month) {
+ } elsif (!defined($LastIteration) or $LastIteration ne $Caption) {
close $OUT if ($LastIteration);
- open ($OUT,sprintf('>%s-%s',$FileName,$Month)) or die sprintf("$MySelf: E: Cannot open output file '%s-%s': $!\n",$FileName,$Month);
+ # safeguards for filename creation:
+ # replace potential problem characters with '_'
+ $FileName = sprintf('%s-%s',$FileTempl,$Caption);
+ $FileName =~ s/[^a-zA-Z0-9_-]+/_/g;
+ open ($OUT,">$FileName")
+ or &Bleat(2,sprintf("Cannot open output file '%s': $!",
+ $FileName));
$Handle = $OUT;
};
- print $Handle &FormatOutput($Format, $Month, $Key, $Value, $PadGroup);
- $LastIteration = $Month;
+ print $Handle &FormatOutput($Format, $Comments, $Caption, $Key, $Value,
+ $Precision, $PadGroup);
+ $LastIteration = $Caption;
};
- close $OUT if ($FileName);
+ close $OUT if ($FileTempl);
};
################################################################################
sub FormatOutput {
################################################################################
### format information for output according to format specifier
-### IN : $Format : format specifier
-### $Month : month (as YYYY-MM)
-### $Key : newsgroup, client, ...
-### $Value : number of postings with that attribute
-### $PadGroup: padding length for key field (optional) for 'pretty'
+### IN : $Format : format specifier
+### $Comments : print or suppress all comments for machine-readable output
+### $Caption : month (as YYYY-MM) or $Key, according to sorting order
+### $Key : newsgroup, client, ... or $Month, as above
+### $Value : number of postings with that attribute
+### $Precision: number of digits right of decimal point (0 or 2)
+### $PadGroup : padding length for key field (optional) for 'pretty'
### OUT: $Output: formatted output
- my ($Format, $Month, $Key, $Value, $PadGroup) = @_;
-
- # define output types
- my %LegalOutput;
- @LegalOutput{('dump','dumpgroup','list','pretty')} = ();
- # bail out if format is unknown
- die "$MySelf: E: Unknown output type '$Format'!\n" if !exists($LegalOutput{$Format});
-
+ my ($Format, $Comments, $Caption, $Key, $Value, $Precision, $PadGroup) = @_;
my ($Output);
- # keep last month in mind
+ # keep last caption in mind
our ($LastIteration);
+ # create one line of output
if ($Format eq 'dump') {
- # output as dump (ng nnnnn)
- $Output = sprintf ("%s %u\n",$Key,$Value);
- } elsif ($Format eq 'dumpgroup') {
- # output as dump (YYYY-NN: nnnnn)
- $Output = sprintf ("%s: %5u\n",$Month,$Value);
+ # output as dump (key value)
+ $Output = sprintf ("# %s:\n",$Caption)
+ if ($Comments and (!defined($LastIteration) or $Caption ne $LastIteration));
+ $Output .= sprintf ("%s %u\n",$Key,$Value);
} elsif ($Format eq 'list') {
- # output as list (YYYY-NN: ng nnnnn)
- $Output = sprintf ("%s: %s %u\n",$Month,$Key,$Value);
+ # output as list (caption key value)
+ $Output = sprintf ("%s %s %u\n",$Caption,$Key,$Value);
} elsif ($Format eq 'pretty') {
- # output as table
- $Output = sprintf ("----- %s:\n",$Month) if (!defined($LastIteration) or $Month ne $LastIteration);
- $LastIteration = $Month;
- $Output .= sprintf ($PadGroup ? sprintf("%%-%us %%5u\n",$PadGroup) : "%s %u\n",$Key,$Value);
+ # output as a table
+ $Output = sprintf ("# ----- %s:\n",$Caption)
+ if ($Comments and (!defined($LastIteration) or $Caption ne $LastIteration));
+ $Output .= sprintf ($PadGroup ? sprintf("%%-%us %%10.*f\n",$PadGroup) :
+ "%s %.*f\n",$Key,$Precision,$Value);
};
return $Output;
};
### IN : $ShowHierarchies: boolean value
### OUT: SQL code
my ($ShowHierarchies) = @_;
- return $ShowHierarchies ? '' : "AND newsgroup NOT LIKE '%.ALL'";
+ return $ShowHierarchies ? '' : "newsgroup NOT LIKE '%.ALL'";
};
################################################################################
sub GetMaxLength {
################################################################################
### get length of longest field in future query result
-### IN : $DBHandle : database handel
-### $Table : table to query
-### $Field : field to check
-### $WhereClause: WHERE clause
-### @BindVars : bind variables for WHERE clause
+### IN : $DBHandle : database handel
+### $Table : table to query
+### $Field : field to check
+### $WhereClause : WHERE clause
+### $HavingClause: HAVING clause
+### @BindVars : bind variables for WHERE clause
### OUT: $Length: length of longest instnace of $Field
- my ($DBHandle,$Table,$Field,$WhereClause,@BindVars) = @_;
- my $DBQuery = $DBHandle->prepare(sprintf("SELECT MAX(LENGTH(%s)) FROM %s WHERE %s",$Field,$Table,$WhereClause));
- $DBQuery->execute(@BindVars) or warn sprintf("$MySelf: W: Can't get field length for %s from table %s: $DBI::errstr\n",$Field,$Table);
+ my ($DBHandle,$Table,$Field,$WhereClause,$HavingClause,@BindVars) = @_;
+ my $DBQuery = $DBHandle->prepare(sprintf("SELECT MAX(LENGTH(%s)) ".
+ "FROM %s %s %s",$Field,$Table,
+ $WhereClause,$HavingClause ?
+ 'GROUP BY newsgroup' . $HavingClause .
+ ' ORDER BY LENGTH(newsgroup) '.
+ 'DESC LIMIT 1': ''));
+ $DBQuery->execute(@BindVars) or &Bleat(1,sprintf("Can't get field length ".
+ "for '%s' from table '%s': ".
+ "$DBI::errstr",$Field,$Table));
my ($Length) = $DBQuery->fetchrow_array;
return $Length;
};
+################################################################################
+sub SQLSortOrder {
+################################################################################
+### build a SQL 'ORDER BY' clause from $OptGroupBy (primary sorting) and
+### $OptOrderBy (secondary sorting), both ascending or descending;
+### descending sorting order is done by adding '-desc'
+### IN : $GroupBy: primary sort by 'month' (default) or 'newsgroups'
+### $OrderBy: secondary sort by month/newsgroups (default)
+### or number of 'postings'
+### OUT: a SQL ORDER BY clause
+ my ($GroupBy,$OrderBy) = @_;
+ my ($GroupSort,$OrderSort) = ('','');
+ # $GroupBy (primary sorting)
+ if (!$GroupBy) {
+ $GroupBy = 'month';
+ } else {
+ ($GroupBy, $GroupSort) = SQLParseOrder($GroupBy);
+ if ($GroupBy =~ /group/i) {
+ $GroupBy = 'newsgroup';
+ } else {
+ $GroupBy = 'month';
+ }
+ }
+ my $Secondary = ($GroupBy eq 'month') ? 'newsgroup' : 'month';
+ # $OrderBy (secondary sorting)
+ if (!$OrderBy) {
+ $OrderBy = $Secondary;
+ } else {
+ ($OrderBy, $OrderSort) = SQLParseOrder($OrderBy);
+ if ($OrderBy =~ /posting/i) {
+ $OrderBy = "postings $OrderSort, $Secondary";
+ } else {
+ $OrderBy = "$Secondary $OrderSort";
+ }
+ }
+ return ($GroupBy,&SQLBuildClause('order',"$GroupBy $GroupSort",$OrderBy));
+};
+
+################################################################################
+sub SQLParseOrder {
+################################################################################
+### parse $OptGroupBy or $OptOrderBy option of the form param[-desc], e.g.
+### 'month', 'month-desc', 'newsgroups-desc', but also just 'desc'
+### IN : $OrderOption: order option (see above)
+### OUT: parameter to sort by,
+### sort order ('DESC' or nothing, meaning 'ASC')
+ my ($OrderOption) = @_;
+ my $SortOrder = '';
+ if ($OrderOption =~ s/-?desc$//i) {
+ $SortOrder = 'DESC';
+ } else {
+ $OrderOption =~ s/-?asc$//i
+ }
+ return ($OrderOption,$SortOrder);
+};
+
################################################################################
sub SQLGroupList {
################################################################################
-### explode list of newsgroups separated by : (with wildcards) to a SQL WHERE
-### clause
+### explode list of newsgroups separated by : (with wildcards)
+### to a SQL 'WHERE' expression
### IN : $Newsgroups: list of newsgroups (group.one.*:group.two:group.three.*)
-### OUT: SQL code, list of newsgroups
+### OUT: SQL code to become part of a 'WHERE' clause,
+### list of newsgroups for SQL bindings
my ($Newsgroups) = @_;
+ # substitute '*' wildcard with SQL wildcard character '%'
$Newsgroups =~ s/\*/%/g;
- return ('newsgroup LIKE ?', $Newsgroups) if $Newsgroups !~ /:/;
+ # just one newsgroup?
+ return (SQLGroupWildcard($Newsgroups),$Newsgroups) if $Newsgroups !~ /:/;
+ # list of newsgroups separated by ':'
my $SQL = '(';
my @GroupList = split /:/, $Newsgroups;
foreach (@GroupList) {
$SQL .= ' OR ' if $SQL gt '(';
- $SQL .= 'newsgroup LIKE ?';
+ $SQL .= SQLGroupWildcard($_);
};
$SQL .= ')';
return ($SQL,@GroupList);
};
+################################################################################
+sub SQLGroupWildcard {
+################################################################################
+### build a valid SQL 'WHERE' expression with or without wildcards
+### IN : $Newsgroup: newsgroup expression, probably with wildcard
+### (group.name or group.name.%)
+### OUT: SQL code to become part of a 'WHERE' clause
+ my ($Newsgroup) = @_;
+ # FIXME: check for validity
+ if ($Newsgroup !~ /%/) {
+ return 'newsgroup = ?';
+ } else {
+ return 'newsgroup LIKE ?';
+ }
+};
+
+################################################################################
+sub SQLSetBounds {
+################################################################################
+### set upper and/or lower boundary (number of postings)
+### IN : $Type: 'level', 'average', 'sum' or 'default'
+### $LowBound,$UppBound: lower/upper boundary, respectively
+### OUT: SQL code to become part of a WHERE or HAVING clause
+ my ($Type,$LowBound,$UppBound) = @_;
+ ($LowBound,$UppBound) = SQLCheckNumber($LowBound,$UppBound);
+ if($LowBound and $UppBound and $LowBound > $UppBound) {
+ &Bleat(1,"Lower boundary $LowBound is larger than Upper boundary ".
+ "$UppBound, exchanging boundaries.");
+ ($LowBound,$UppBound) = ($UppBound,$LowBound);
+ }
+ # default to 'default'
+ my $WhereHavingFunction = 'postings';
+ # set $LowBound to SQL statement:
+ # 'WHERE postings >=', 'HAVING MIN(postings) >=' or 'HAVING AVG(postings) >='
+ if ($Type eq 'level') {
+ $WhereHavingFunction = 'MIN(postings)'
+ } elsif ($Type eq 'average') {
+ $WhereHavingFunction = 'AVG(postings)'
+ } elsif ($Type eq 'sum') {
+ $WhereHavingFunction = 'SUM(postings)'
+ }
+ $LowBound = sprintf('%s >= '.$LowBound,$WhereHavingFunction) if ($LowBound);
+ # set $LowBound to SQL statement:
+ # 'WHERE postings <=', 'HAVING MAX(postings) <=' or 'HAVING AVG(postings) <='
+ if ($Type eq 'level') {
+ $WhereHavingFunction = 'MAX(postings)'
+ } elsif ($Type eq 'average') {
+ $WhereHavingFunction = 'AVG(postings)'
+ } elsif ($Type eq 'sum') {
+ $WhereHavingFunction = 'SUM(postings)'
+ }
+ $UppBound = sprintf('%s <= '.$UppBound,$WhereHavingFunction) if ($UppBound);
+ return ($LowBound,$UppBound);
+};
+
+################################################################################
+sub SQLCheckNumber {
+################################################################################
+### check if input is a valid positive integer; otherwise, make it one
+### IN : @Numbers: array of parameters
+### OUT: @Numbers: a valid positive integer
+ my (@Numbers) = @_;
+ foreach my $Number (@Numbers) {
+ if ($Number and $Number < 0) {
+ &Bleat(1,"Boundary $Number is < 0, set to ".-$Number);
+ $Number = -$Number;
+ }
+ $Number = '' if ($Number and $Number !~ /^\d+$/);
+ }
+ return @Numbers;
+};
+
+################################################################################
+sub SQLBuildClause {
+################################################################################
+### build a valid SQL WHERE, GROUP BY, ORDER BY or HAVING clause
+### from multiple expressions which *may* be empty
+### IN : $Type: 'where', 'having', 'group' or 'order'
+### @Expressions: array of expressions
+### OUT: $SQLClause: a SQL clause
+ my ($Type,@Expressions) = @_;
+ my ($SQLClause,$Separator,$Statement);
+ # set separator ('AND' or ',')
+ if ($Type eq 'where' or $Type eq 'having') {
+ $Separator = 'AND';
+ } else {
+ $Separator = ',';
+ }
+ # set statement
+ if ($Type eq 'where') {
+ $Statement = 'WHERE';
+ } elsif ($Type eq 'order') {
+ $Statement = 'ORDER BY';
+ } elsif ($Type eq 'having') {
+ $Statement = 'HAVING';
+ } else {
+ $Statement = 'GROUP BY';
+ }
+ # build query from expressions with separators
+ foreach my $Expression (@Expressions) {
+ if ($Expression) {
+ $SQLClause .= " $Separator " if ($SQLClause);
+ $SQLClause .= $Expression;
+ }
+ }
+ # add statement in front if not already present
+ $SQLClause = " $Statement " . $SQLClause
+ if ($SQLClause and $SQLClause !~ /$Statement/);
+ return $SQLClause;
+};
+
+
#####------------------------------- done ---------------------------------#####
1;
#
# It is part of the NewsStats package.
#
-# Copyright (c) 2010 Thomas Hochstein <thh@inter.net>
+# Copyright (c) 2010-2012 Thomas Hochstein <thh@inter.net>
#
# It can be redistributed and/or modified under the same terms under
# which Perl itself is published.
}
use strict;
-use NewsStats qw(:DEFAULT :TimePeriods :Output :SQLHelper);
+use NewsStats qw(:DEFAULT :TimePeriods :Output :SQLHelper ReadGroupList);
use DBI;
+use Getopt::Long qw(GetOptions);
+Getopt::Long::config ('bundling');
################################# Main program #################################
### read commandline options
-my %Options = &ReadOptions('m:p:an:o:t:l:b:iscqdf:g:');
+my ($OptBoundType,$OptCaptions,$OptCheckgroupsFile,$OptComments,
+ $OptFileTemplate,$OptFormat,$OptGroupBy,$OptGroupsDB,$LowBound,$OptMonth,
+ $OptNewsgroups,$OptOrderBy,$OptReportType,$OptSums,$UppBound);
+GetOptions ('b|boundary=s' => \$OptBoundType,
+ 'c|captions!' => \$OptCaptions,
+ 'checkgroups=s' => \$OptCheckgroupsFile,
+ 'comments!' => \$OptComments,
+ 'filetemplate=s' => \$OptFileTemplate,
+ 'f|format=s' => \$OptFormat,
+ 'g|group-by=s' => \$OptGroupBy,
+ 'groupsdb=s' => \$OptGroupsDB,
+ 'l|lower=i' => \$LowBound,
+ 'm|month=s' => \$OptMonth,
+ 'n|newsgroups=s' => \$OptNewsgroups,
+ 'o|order-by=s' => \$OptOrderBy,
+ 'r|report=s' => \$OptReportType,
+ 's|sums!' => \$OptSums,
+ 'u|upper=i' => \$UppBound,
+ 'h|help' => \&ShowPOD,
+ 'V|version' => \&ShowVersion) or exit 1;
+# parse parameters
+# $OptComments defaults to TRUE
+$OptComments = 1 if (!defined($OptComments));
+# force --nocomments when --filetemplate is used
+$OptComments = 0 if ($OptFileTemplate);
+# parse $OptBoundType
+if ($OptBoundType) {
+ if ($OptBoundType =~ /level/i) {
+ $OptBoundType = 'level';
+ } elsif ($OptBoundType =~ /av(era)?ge?/i) {
+ $OptBoundType = 'average';
+ } elsif ($OptBoundType =~ /sums?/i) {
+ $OptBoundType = 'sum';
+ } else {
+ $OptBoundType = 'default';
+ }
+}
+# parse $OptReportType
+if ($OptReportType) {
+ if ($OptReportType =~ /av(era)?ge?/i) {
+ $OptReportType = 'average';
+ } elsif ($OptReportType =~ /sums?/i) {
+ $OptReportType = 'sum';
+ } else {
+ $OptReportType = 'default';
+ }
+}
+# read list of newsgroups from --checkgroups
+# into a hash reference
+my $ValidGroups = &ReadGroupList($OptCheckgroupsFile) if $OptCheckgroupsFile;
### read configuration
-my %Conf = %{ReadConfig('newsstats.conf')};
+my %Conf = %{ReadConfig($HomePath.'/newsstats.conf')};
### override configuration via commandline options
my %ConfOverride;
-$ConfOverride{'DBTableGrps'} = $Options{'g'} if $Options{'g'};
+$ConfOverride{'DBTableGrps'} = $OptGroupsDB if $OptGroupsDB;
&OverrideConfig(\%Conf,\%ConfOverride);
-### check for incompatible command line options
-# you can't mix '-t', '-b' and '-l'
-# -b/-l take preference over -t, and -b takes preference over -l
-# you can't use '-f' with '-b' or '-l'
-if ($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 $Options{'d'};
-};
-
-### check output type
-# default output type to 'pretty'
-$Options{'o'} = 'pretty' 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'} and $Options{'o'} ne 'pretty') {
- $Options{'o'} = 'pretty';
- warn ("$MySelf: W: Output type forced to '-o pretty' due to usage of '-l'.\n");
-};
-# set output type to 'dump' for -f
-if ($Options{'f'} and $Options{'o'} ne 'dump') {
- $Options{'o'} = 'dump';
- warn ("$MySelf: W: Output type forced to '-o dump' due to usage of '-f'.\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) = $DBQuery->fetchrow_array;
+### get time period and newsgroups, prepare SQL 'WHERE' clause
+# get time period
+# and set caption for output and expression for SQL 'WHERE' clause
+my ($CaptionPeriod,$SQLWherePeriod) = &GetTimePeriod($OptMonth);
+# bail out if --month is invalid
+&Bleat(2,"--month option has an invalid format - ".
+ "please use 'YYYY-MM', 'YYYY-MM:YYYY-MM' or 'ALL'!") if !$CaptionPeriod;
+# get list of newsgroups and set expression for SQL 'WHERE' clause
+# with placeholders as well as a list of newsgroup to bind to them
+my ($SQLWhereNewsgroups,@SQLBindNewsgroups) = &SQLGroupList($OptNewsgroups)
+ if $OptNewsgroups;;
+
+### build SQL WHERE clause (and HAVING clause, if needed)
+my ($SQLWhereClause,$SQLHavingClause);
+# $OptBoundType 'level'
+if ($OptBoundType and $OptBoundType ne 'default') {
+ $SQLWhereClause = SQLBuildClause('where',$SQLWherePeriod,
+ $SQLWhereNewsgroups,&SQLHierarchies($OptSums));
+ $SQLHavingClause = SQLBuildClause('having',&SQLSetBounds($OptBoundType,
+ $LowBound,$UppBound));
+# $OptBoundType 'threshold' / 'default' or none
} else {
- ($StartMonth,$EndMonth) = &GetTimePeriod($Options{'m'},$Options{'p'});
-};
-# if -p or -a are set: drop -m
-undef $Options{'m'} if ($Options{'p'} or $Options{'a'});
-# if time period is more than one month: force output type to '-o pretty' or '-o dumpgroup'
-if ($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';
- }
-};
+ $SQLWhereClause = SQLBuildClause('where',$SQLWherePeriod,
+ $SQLWhereNewsgroups,&SQLHierarchies($OptSums),
+ &SQLSetBounds('default',$LowBound,$UppBound));
+}
-### 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;
+### get sort order and build SQL 'ORDER BY' clause
+# default to 'newsgroup' for $OptBoundType 'level' or 'average'
+$OptGroupBy = 'newsgroup' if (!$OptGroupBy and
+ $OptBoundType and $OptBoundType ne 'default');
+# force to 'month' for $OptReportType 'average' or 'sum'
+$OptGroupBy = 'month' if ($OptReportType and $OptReportType ne 'default');
+# parse $OptGroupBy to $GroupBy, create ORDER BY clause $SQLOrderClause
+my ($GroupBy,$SQLOrderClause) = SQLSortOrder($OptGroupBy, $OptOrderBy);
+# $GroupBy will contain 'month' or 'newsgroup' (parsed result of $OptGroupBy)
+# set it to 'month' or 'key' for OutputData()
+$GroupBy = ($GroupBy eq 'month') ? 'month' : 'key';
+
+### get report type and build SQL 'SELECT' query
+my $SQLSelect;
+my $SQLGroupClause = '';
+my $Precision = 0; # number of digits right of decimal point for output
+if ($OptReportType and $OptReportType ne 'default') {
+ $SQLGroupClause = 'GROUP BY newsgroup';
+ # change $SQLOrderClause: replace everything before 'postings'
+ $SQLOrderClause =~ s/BY.+postings/BY postings/;
+ if ($OptReportType eq 'average') {
+ $SQLSelect = "'All months',newsgroup,AVG(postings)";
+ $Precision = 2;
+ # change $SQLOrderClause: replace 'postings' with 'AVG(postings)'
+ $SQLOrderClause =~ s/postings/AVG(postings)/;
+ } elsif ($OptReportType eq 'sum') {
+ $SQLSelect = "'All months',newsgroup,SUM(postings)";
+ # change $SQLOrderClause: replace 'postings' with 'SUM(postings)'
+ $SQLOrderClause =~ s/postings/SUM(postings)/;
+ }
+ } else {
+ $SQLSelect = 'month,newsgroup,postings';
};
-# manage thresholds
-if (defined($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 $MaxLength = &GetMaxLength($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);
+### get length of longest newsgroup name delivered by query
+### for formatting purposes
+my $Field = ($GroupBy eq 'month') ? 'newsgroup' : 'month';
+my $MaxLength = &GetMaxLength($DBHandle,$Conf{'DBTableGrps'},
+ $Field,$SQLWhereClause,$SQLHavingClause,
+ @SQLBindNewsgroups);
+
+### build and execute SQL query
+my ($DBQuery);
+# special query preparation for $OptBoundType 'level', 'average' or 'sums'
+if ($OptBoundType and $OptBoundType ne 'default') {
+ # prepare and execute first query:
+ # get list of newsgroups meeting level conditions
+ $DBQuery = $DBHandle->prepare(sprintf('SELECT newsgroup FROM %s.%s %s '.
+ 'GROUP BY newsgroup %s',
+ $Conf{'DBDatabase'},$Conf{'DBTableGrps'},
+ $SQLWhereClause,$SQLHavingClause));
+ $DBQuery->execute(@SQLBindNewsgroups)
+ or &Bleat(2,sprintf("Can't get groups data for %s from %s.%s: %s\n",
+ $CaptionPeriod,$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 .= ',' if $GroupList;
$GroupList .= "'$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));
-};
+ # enhance $WhereClause
+ if ($GroupList) {
+ $SQLWhereClause = SQLBuildClause('where',$SQLWhereClause,
+ sprintf('newsgroup IN (%s)',$GroupList));
+ } else {
+ # condition cannot be satisfied;
+ # force query to fail by adding '0=1'
+ $SQLWhereClause = SQLBuildClause('where',$SQLWhereClause,'0=1');
+ }
+}
+
+# prepare query
+$DBQuery = $DBHandle->prepare(sprintf('SELECT %s FROM %s.%s %s %s %s',
+ $SQLSelect,
+ $Conf{'DBDatabase'},$Conf{'DBTableGrps'},
+ $SQLWhereClause,$SQLGroupClause,$
+ SQLOrderClause));
# 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 ($Options{'m'}) {
- printf ("----- Report for %s\n",$StartMonth);
- } else {
- printf ("----- Report from %s to %s %s\n",$StartMonth,$EndMonth,$Options{'a'} ? '(all months)' : '');
- };
-};
-# print caption (-c) with newsgroup list if -n is set
-printf ("----- Newsgroups: %s\n",join(',',split(/:/,$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, $Postings, 7);
- };
-};
+$DBQuery->execute(@SQLBindNewsgroups)
+ or &Bleat(2,sprintf("Can't get groups data for %s from %s.%s: %s\n",
+ $CaptionPeriod,$Conf{'DBDatabase'},$Conf{'DBTableGrps'},
+ $DBI::errstr));
+
+### output results
+# set default to 'pretty'
+$OptFormat = 'pretty' if !$OptFormat;
+# print captions if --caption is set
+if ($OptCaptions && $OptComments) {
+ # print time period with report type
+ my $CaptionReportType= '(number of postings for each month)';
+ if ($OptReportType and $OptReportType ne 'default') {
+ $CaptionReportType= '(average number of postings for each month)'
+ if $OptReportType eq 'average';
+ $CaptionReportType= '(number of all postings for that time period)'
+ if $OptReportType eq 'sum';
+ }
+ printf("# ----- Report for %s %s\n",$CaptionPeriod,$CaptionReportType);
+ # print newsgroup list if --newsgroups is set
+ printf("# ----- Newsgroups: %s\n",join(',',split(/:/,$OptNewsgroups)))
+ if $OptNewsgroups;
+ # print boundaries, if set
+ my $CaptionBoundary= '(counting only month fulfilling this condition)';
+ if ($OptBoundType and $OptBoundType ne 'default') {
+ $CaptionBoundary= '(every single month)' if $OptBoundType eq 'level';
+ $CaptionBoundary= '(on average)' if $OptBoundType eq 'average';
+ $CaptionBoundary= '(all month summed up)' if $OptBoundType eq 'sum';
+ }
+ printf("# ----- Threshold: %s %s x %s %s %s\n",
+ $LowBound ? $LowBound : '',$LowBound ? '=>' : '',
+ $UppBound ? '<=' : '',$UppBound ? $UppBound : '',$CaptionBoundary)
+ if ($LowBound or $UppBound);
+ # print primary and secondary sort order
+ printf("# ----- Grouped by %s (%s), sorted %s%s\n",
+ ($GroupBy eq 'month') ? 'Months' : 'Newsgroups',
+ ($OptGroupBy and $OptGroupBy =~ /-?desc$/i) ? 'descending' : 'ascending',
+ ($OptOrderBy and $OptOrderBy =~ /posting/i) ? 'by number of postings ' : '',
+ ($OptOrderBy and $OptOrderBy =~ /-?desc$/i) ? 'descending' : 'ascending');
+}
+
+# output data
+&OutputData($OptFormat,$OptComments,$GroupBy,$Precision,
+ $OptCheckgroupsFile ? $ValidGroups : '',
+ $OptFileTemplate,$DBQuery,$MaxLength);
### close handles
$DBHandle->disconnect;
=head1 SYNOPSIS
-B<groupstats> [B<-Vhiscqd>] [B<-m> I<YYYY-MM> | B<-p> I<YYYY-MM:YYYY-MM> | B<-a>] [B<-n> I<newsgroup(s)>] [B<-t> I<threshold>] [B<-l> I<level>] [B<-b> I<number>] [B<-o> I<output type>] [B<-f> I<filename template>] [B<-g> I<database table>]
+B<groupstats> [B<-Vhcs> B<--comments>] [B<-m> I<YYYY-MM>[:I<YYYY-MM>] | I<all>] [B<-n> I<newsgroup(s)>] [B<--checkgroups> I<checkgroups file>] [B<-r> I<report type>] [B<-l> I<lower boundary>] [B<-u> I<upper boundary>] [B<-b> I<boundary type>] [B<-g> I<group by>] [B<-o> I<order by>] [B<-f> I<output format>] [B<--filetemplate> I<filename template>] [B<--groupsdb> I<database table>]
=head1 REQUIREMENTS
-See doc/README: Perl 5.8.x itself and the following modules from CPAN:
-
-=over 2
-
-=item -
-
-Config::Auto
-
-=item -
-
-DBI
-
-=back
+See L<doc/README>.
=head1 DESCRIPTION
This script create reports on newsgroup usage (number of postings per
group per month) taken from result tables created by
-F<gatherstats.pl>.
-
-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<groupstats> 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).
+B<gatherstats.pl>.
-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<threshold> postings per month will be included.
+=head2 Features and options
-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>.
+=head3 Time period and newsgroups
-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<i> as needed).
+The time period to act on defaults to last month; you can assign another
+time period or a single month (or drop all time constraints) via the
+B<--month> option (see below).
-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<i>).
-
-By default, B<groupstats> will dump an alphabetical list of newsgroups,
-one per line, followed by the number of postings in that group, for
-every month. You can change the output format by using B<-o> (see
-below). Captions can be added by setting the B<-c> switch.
+B<groupstats> will process all newsgroups by default; you can limit
+processing to only some newsgroups by supplying a list of those groups via
+B<--newsgroups> option (see below). You can include hierarchy levels in
+the output by adding the B<--sums> switch (see below). Optionally
+newsgroups not present in a checkgroups file can be excluded from output,
+sse B<--checkgroups> below.
+
+=head3 Report type
+
+You can choose between different B<--report> types: postings per month,
+average postings per month or all postings summed up; for details, see
+below.
+
+=head3 Upper and lower boundaries
+
+Furthermore you can set an upper and/or lower boundary to exclude some
+results from output via the B<--lower> and B<--upper> options,
+respectively. By default, all newsgroups with more and/or less postings
+per month will be excluded from the result set (i.e. not shown and not
+considered for average and sum reports). You can change the meaning of
+those boundaries with the B<--boundary> option. For details, please see
+below.
+
+=head3 Sorting and formatting the output
+
+By default, all results are grouped by month; you can group results by
+newsgroup instead via the B<--groupy-by> option. Within those groups, the
+list of newsgroups (or months) is sorted alphabetically (or
+chronologically, respectively) ascending. You can change that order (and
+sort by number of postings) with the B<--order-by> option. For details and
+exceptions, please see below.
+
+The results will be formatted as a kind of table; you can change the
+output format to a simple list or just a list of newsgroups and number of
+postings with the B<--format> option. Captions will be added by means of
+the B<--caption> option; all comments (and captions) can be supressed by
+using B<--nocomments>.
+
+Last but not least you can redirect all output to a number of files, e.g.
+one for each month, by submitting the B<--filetemplate> option, see below.
+Captions and comments are automatically disabled in this case.
=head2 Configuration
See doc/INSTALL for an overview of possible configuration options.
-You can override configuration options via the B<-g> switch.
+You can override some configuration options via the B<--groupsdb> option.
=head1 OPTIONS
=over 3
-=item B<-V> (version)
+=item B<-V>, B<--version>
-Print out version and copyright information on B<yapfaq> and exit.
+Print out version and copyright information and exit.
-=item B<-h> (help)
+=item B<-h>, B<--help>
Print this man page and exit.
-=item B<-m> I<YYYY-MM> (month)
-
-Set processing period to a month in YYYY-MM format. Ignored if B<-p>
-or B<-a> is set.
+=item B<-m>, B<--month> I<YYYY-MM[:YYYY-MM]|all>
-=item B<-p> I<YYYY-MM:YYYY-MM> (period)
+Set processing period to a single month in YYYY-MM format or to a time
+period between two month in YYYY-MM:YYYY-MM format (two month, separated
+by a colon). By using the keyword I<all> instead, you can set no
+processing period to process the whole database.
-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<newsgroup(s)> (newsgroups)
+=item B<-n>, B<--newsgroups> I<newsgroup(s)>
Limit processing to a certain set of newsgroups. I<newsgroup(s)> can
be a single newsgroup name (de.alt.test), a newsgroup hierarchy
de.test:de.alt.test:de.newusers.*
-=item B<-t> I<threshold> (threshold)
+=item B<-s>, B<--sums|--nosums> (sum per hierarchy level)
-Only include newsgroups with more than I<threshold> postings per
-month. Can be inverted by the B<-i> switch so that only newsgroups
-with less than I<threshold> postings will be included.
+Include "virtual" groups for every hierarchy level in output, for
+example:
-This setting will be ignored if B<-l> or B<-b> is set.
+ de.alt.ALL 10
+ de.alt.test 5
+ de.alt.admin 7
-=item B<-l> I<level> (level)
+See the B<gatherstats> man page for details.
-Only include newsgroups with more than I<level> 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<level>
-postings every single month will be included. Output will be ordered
-by newsgroup name, followed by month.
+=item B<--checkgroups> I<filename>
-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>.
+Restrict output to those newgroups present in a file in checkgroups format
+(one newgroup name per line; everything after the first whitespace on each
+line is ignored). All other newsgroups will be removed from output.
-=item B<-b> I<n> (best of)
+=item B<-r>, B<--report> I<default|average|sums>
-Create a list of the I<n> 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<n> newsgroups with the least postings over the whole
-period is generated. Output will be ordered by sum of postings.
+Choose the report type: I<default>, I<average> or I<sums>
-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<pretty> (see below).
+By default, B<groupstats> will report the number of postings for each
+newsgroup in each month. But it can also report the average number of
+postings per group for all months or the total sum of postings per group
+for all months.
-=item B<-i> (invert)
+For report types I<average> and I<sums>, the B<group-by> option has no
+meaning and will be silently ignored (see below).
-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<-l>, B<--lower> I<lower boundary>
-=item B<-s> (sum per hierarchy level)
+Set the lower boundary. See B<--boundary> below.
-Include "virtual" groups for every hierarchy level in output, for
-example:
+=item B<-l>, B<--upper> I<upper boundary>
- de.alt.ALL 10
- de.alt.test 5
- de.alt.admin 7
+Set the upper boundary. See B<--boundary> below.
-See the B<gatherstats> man page for details.
+=item B<-b>, B<--boundary> I<boundary type>
+
+Set the boundary type to one of I<default>, I<level>, I<average> or
+I<sums>.
+
+By default, all newsgroups with more postings per month than the upper
+boundary and/or less postings per month than the lower boundary will be
+excluded from further processing. For the default report that means each
+month only newsgroups with a number of postings between the boundaries
+will be displayed. For the other report types, newsgroups with a number of
+postings exceeding the boundaries in all (!) months will not be
+considered.
+
+For example, lets take a list of newsgroups like this:
+
+ ----- 2012-01:
+ de.comp.datenbanken.misc 6
+ de.comp.datenbanken.ms-access 84
+ de.comp.datenbanken.mysql 88
+ ----- 2012-02:
+ de.comp.datenbanken.misc 8
+ de.comp.datenbanken.ms-access 126
+ de.comp.datenbanken.mysql 21
+ ----- 2012-03:
+ de.comp.datenbanken.misc 24
+ de.comp.datenbanken.ms-access 83
+ de.comp.datenbanken.mysql 36
+
+With C<groupstats --month 2012-01:2012-03 --lower 25 --report sums>,
+you'll get the following result:
-=item B<-o> I<output type> (output format)
+ ----- All months:
+ de.comp.datenbanken.ms-access 293
+ de.comp.datenbanken.mysql 124
-Set output format. Default is I<pretty>, which will print a header for
-each new month, followed by an alphabetical list of newsgroups, each
-on a new line, followed by the number of postings in that month.
-B<groupstats> will try to align newsgroup names and posting counts.
-Usage of B<-b> will force this format; it cannot be used together with
-B<-f>.
+de.comp.datenbanken.misc has not been considered even though it has 38
+postings in total, because it has less than 25 postings in every single
+month. If you want to list all newsgroups with more than 25 postings U<in
+total>, you'll have to set the boundary type to I<sum>, see below.
-I<dump> format is used to create an easily parsable output consisting
-of an alphabetical list of newsgroups, each on a new line, followed by
-the number of postings in that month, without any alignment. This
-default format can't be used with time periods of more than one month.
-Usage of B<-f> will force this format.
+A boundary type of I<level> will show only those newsgroups - at all -
+that satisfy the boundaries in each and every single month. With the above
+list of newsgroups and
+C<groupstats --month 2012-01:2012-03 --lower 25 --boundary level --report sums>,
+you'll get this result:
-I<list> format is like I<dump>, but will print the month in front of
-the newsgroup name.
+ ----- All months:
+ de.comp.datenbanken.ms-access 293
-I<dumpgroup> format can only be use with a group list (see B<-n>) of
-exactly one newsgroup and is like I<dump>, but will output months,
-followed by the number of postings.
+de.comp.datenbanken.mysql has not been considered because it had less than
+25 postings in 2012-02.
-=item B<-c> (captions)
+You can use that to get a list of newsgroups that have more (or less) then
+x postings during the whole reporting period.
-Add captions to output (reporting period, newsgroups list, threshold
-and so on).
+A boundary type of I<average> will show only those newsgroups - at all -that
+satisfy the boundaries on average. With the above list of newsgroups and
+C<groupstats --month 2012-01:2012-03 --lower 25 --boundary avg --report sums>,
+you'll get this result:
-This setting will be ignored if B<-f> is set.
+ ----- All months:
+ de.comp.datenbanken.ms-access 293
+ de.comp.datenbanken.mysql 145
-=item B<-q> (quantity of postings)
+The average number of postings in the three groups is:
-Sort by number of postings instead of by newsgroup names.
+ de.comp.datenbanken.misc 12.67
+ de.comp.datenbanken.ms-access 97.67
+ de.comp.datenbanken.mysql 48.33
-Cannot be used with B<-l> or B<-b>.
+Last but not least, a boundary type of I<sums> will show only those
+newsgroups - at all - that satisfy the boundaries with the total sum of
+all postings during the reporting period. With the above list of
+newsgroups and
+C<groupstats --month 2012-01:2012-03 --lower 25 --boundary sum --report sums>,
+you'll finally get this result:
-=item B<-d> (descending)
+ ----- All months:
+ de.comp.datenbanken.misc 38
+ de.comp.datenbanken.ms-access 293
+ de.comp.datenbanken.mysql 145
-Change sort order to descending.
-Cannot be used with B<-l> or B<-b>.
+=item B<-g>, B<--group-by> I<month[-desc]|newsgroups[-desc]>
-=item B<-f> I<filename template> (output file)
+By default, all results are grouped by month, sorted chronologically in
+ascending order, like this:
-Save output to file instead of dumping it to STDOUT. B<groupstats>
-will create one file for each month, with filenames composed by
-adding year and month to the I<filename template>, for example
-with B<-f> I<stats>:
+ ----- 2012-01:
+ de.comp.datenbanken.ms-access 84
+ de.comp.datenbanken.mysql 88
+ ----- 2012-02:
+ de.comp.datenbanken.ms-access 126
+ de.comp.datenbanken.mysql 21
- stats-2010-01
- stats-2010-02
+The results can be grouped by newsgroups instead via
+B<--group-by> I<newsgroup>:
+
+ ----- de.comp.datenbanken.ms-access:
+ 2012-01 84
+ 2012-02 126
+ ----- de.comp.datenbanken.mysql:
+ 2012-01 88
+ 2012-02 21
+
+By appending I<-desc> to the group-by option parameter, you can reverse
+the sort order - e.g. B<--group-by> I<month-desc> will give:
+
+ ----- 2012-02:
+ de.comp.datenbanken.ms-access 126
+ de.comp.datenbanken.mysql 21
+ ----- 2012-01:
+ de.comp.datenbanken.ms-access 84
+ de.comp.datenbanken.mysql 88
+
+Average and sums reports (see above) will always be grouped by months;
+this option will therefore be ignored.
+
+=item B<-o>, B<--order-by> I<default[-desc]|postings[-desc]>
+
+Within each group (a single month or single newsgroup, see above), the
+report will be sorted by newsgroup names in ascending alphabetical order
+by default. You can change the sort order to descending or sort by number
+of postings instead.
+
+=item B<-f>, B<--format> I<pretty|list|dump>
+
+Select the output format, I<pretty> being the default:
+
+ ----- 2012-01:
+ de.comp.datenbanken.ms-access 84
+ de.comp.datenbanken.mysql 88
+ ----- 2012-02:
+ de.comp.datenbanken.ms-access 126
+ de.comp.datenbanken.mysql 21
+
+I<list> format looks like this:
+
+ 2012-01 de.comp.datenbanken.ms-access 84
+ 2012-01 de.comp.datenbanken.mysql 88
+ 2012-02 de.comp.datenbanken.ms-access 126
+ 2012-02 de.comp.datenbanken.mysql 21
+
+And I<dump> format looks like this:
+
+ # 2012-01:
+ de.comp.datenbanken.ms-access 84
+ de.comp.datenbanken.mysql 88
+ # 2012-02:
+ de.comp.datenbanken.ms-access 126
+ de.comp.datenbanken.mysql 21
+
+You can remove the comments by using B<--nocomments>, see below.
+
+=item B<-c>, B<--captions|--nocaptions>
+
+Add captions to output, like this:
+
+ ----- Report for 2012-01 to 2012-02 (number of postings for each month)
+ ----- Newsgroups: de.comp.datenbanken.*
+ ----- Threshold: 10 => x <= 20 (on average)
+ ----- Grouped by Newsgroups (ascending), sorted by number of postings descending
+
+False by default.
+
+=item B<--comments|--nocomments>
+
+Add comments (group headers) to I<dump> and I<pretty> output. True by default.
+
+Use I<--nocomments> to suppress anything except newsgroup names/months and
+numbers of postings. This is enforced when using B<--filetemplate>, see below.
+
+=item B<--filetemplate> I<filename template>
+
+Save output to file(s) instead of dumping it to STDOUT. B<groupstats> will
+create one file for each month (or each newsgroup, accordant to the
+setting of B<--group-by>, see above), with filenames composed by adding
+year and month (or newsgroup names) to the I<filename template>, for
+example with B<--filetemplate> I<stats>:
+
+ stats-2012-01
+ stats-2012-02
... and so on
-This setting will be ignored if B<-l> or B<-b> is set. Output format
-is set to I<dump> (see above).
+B<--nocomments> is enforced, see above.
-=item B<-g> I<table> (postings per group table)
+=item B<--groupsdb> I<database table>
Override I<DBTableGrps> from F<newsstats.conf>.
=head1 INSTALLATION
-See doc/INSTALL.
+See L<doc/INSTALL>.
=head1 EXAMPLES
-Show number of postings per group for lasth month in I<dump> format:
+Show number of postings per group for lasth month in I<pretty> 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
+ groupstats --month 2010-01 --newsgroups de.alt.*:de.test --sums
-Show that report for the year of 2010 in I<pretty> format:
+Only show newsgroups with 30 postings or less last month, ordered
+by number of postings, descending, in I<pretty> format:
- groupstats -p 2010-01:2010-12 -o pretty
+ groupstats --upper 30 --order-by postings-desc
-Only show newsgroups with less than 30 postings last month, ordered
-by number of postings, descending, in I<pretty> format:
+Show the total of all postings for the year of 2010 for all groups that
+had 30 postings or less in every single month in that year, ordered by
+number of postings in descending order:
+
+ groupstats -m 2010-01:2010-12 -u 30 -b level -r sums -o postings-desc
- groupstats -iqdt 30 -o pretty
+The same for the average number of postings in the year of 2010:
-Show top 10 for the first half-year of of 2010 in I<pretty> format:
+ groupstats -m 2010-01:2010-12 -u 30 -b level -r avg -o postings-desc
- groupstats -p 2010-01:2010-06 -b 10 -o pretty
+List number of postings per group for eacht month of 2010 and redirect
+output to one file for each month, namend stats-2010-01 and so on, in
+machine-readable form (without formatting):
-Report all groups that had less than 30 postings every singele month
-in the year of 2010 (I<pretty> format is forced)
+ groupstats -m 2010-01:2010-12 -f dump --filetemplate stats
- groupstats -p 2010-01:2010-12 -il 30
=head1 FILES
=item F<newsstats.conf>
-Runtime configuration file for B<yapfaq>.
+Runtime configuration file.
=back
=item -
-doc/README
+L<doc/README>
=item -
-doc/INSTALL
+l>doc/INSTALL>
=item -
=head1 COPYRIGHT AND LICENSE
-Copyright (c) 2010 Thomas Hochstein <thh@inter.net>
+Copyright (c) 2010-2012 Thomas Hochstein <thh@inter.net>
This program is free software; you may redistribute it and/or modify it
under the same terms as Perl itself.
projects / usenet / newsstats.git / commitdiff
