Provided by: tcllib_1.15-dfsg-2_all 
NAME
report - Create and manipulate report objects
SYNOPSIS
package require Tcl 8.2
package require report ?0.3.1?
::report::report reportName columns ?style style arg...?
reportName option ?arg arg ...?
::report::defstyle styleName arguments script
::report::rmstyle styleName
::report::stylearguments styleName
::report::stylebody styleName
::report::styles
reportName destroy
reportName templatecode disable|enable
reportName templatecode enabled
reportName templatecode get
reportName templatecode set templatedata
reportName tcaption ?size?
reportName bcaption size
reportName size column ?number|dyn?
reportName sizes ?size-list?
reportName pad column ?left|right|both ?padstring??
reportName justify column ?left|right|center?
reportName printmatrix matrix
reportName printmatrix2channel matrix chan
reportName columns
_________________________________________________________________
DESCRIPTION
This package provides report objects which can be used by the formatting methods of matrix
objects to generate tabular reports of the matrix in various forms. The report objects
defined here break each report down into three REGIONS and ten classes of lines (various
separator- and data-lines). See the following section for more detailed explanations.
::report::report reportName columns ?style style arg...?
Creates a new report object for a report having columns columns with an associated
global Tcl command whose name is reportName. This command may be used to invoke
various configuration operations on the report. It has the following general form:
reportName option ?arg arg ...?
Option and the args determine the exact behavior of the command. See section
REPORT METHODS for more explanations. If no style is specified the report
will use the builtin style plain as its default configuration.
::report::defstyle styleName arguments script
Defines the new style styleName. See section STYLES for more information.
::report::rmstyle styleName
Deletes the style styleName. Trying to delete an unknown or builtin style will
result in an error. Beware, this command will not check that there are no other
styles depending on the deleted one. Deleting a style which is still used by
another style FOO will result in a runtime error when FOO is applied to a newly
instantiated report.
::report::stylearguments styleName
This introspection command returns the list of arguments associated with the style
styleName.
::report::stylebody styleName
This introspection command returns the script associated with the style styleName.
::report::styles
This introspection command returns a list containing the names of all styles known
to the package at the time of the call. The order of the names in the list reflects
the order in which the styles were created. In other words, the first item is the
predefined style plain, followed by the first style defined by the user, and so on.
REGIONS
The three regions are the top caption, data area and bottom caption. These are, roughly
speaking, the title, the values to report and a title at the bottom. The size of the
caption regions can be specified by the user as the number of rows they occupy in the
matrix to format. The size of the data area is specified implicitly.
LINES
TEMPLATES are associated with each of the ten line classes, defining the formatting for
this kind of line. The user is able to enable and disable the separator lines at will, but
not the data lines. Their usage is solely determined by the number of rows contained in
the three regions. Data lines and all enabled separators must have a template associated
with them.
Note that the data-lines in a report and the rows in the matrix the report was generated
from are not in a 1:1 relationship if any row in the matrix has a height greater than one.
The different kinds of lines and the codes used by the report methods to address them are:
top The topmost line of a report. Separates the report from anything which came before
it. The user can enable the usage of this line at will.
topdatasep
This line is used to separate the data rows in the top caption region, if it
contains more than one row and the user enabled its usage.
topcapsep
This line is used to separate the top caption and data regions, if the top caption
is not empty and the user enabled its usage.
datasep
This line is used to separate the data rows in the data region, if it contains more
than one row and the user enabled its usage.
botcapsep
This line is used to separate the data and bottom caption regions, if the bottom
caption is not empty and the user enabled its usage.
botdatasep
This line is used to separate the data rows in the bottom caption region, if it
contains more than one row and the user enabled its usage.
bottom The bottommost line of a report. Separates the report from anything which comes
after it. The user can enable the usage of this line at will.
topdata
This line defines the format of data lines in the top caption region of the report.
data This line defines the format of data lines in the data region of the report.
botdata
This line defines the format of data lines in the bottom caption region of the
report.
TEMPLATES
Each template is a list of strings used to format the line it is associated with. For a
report containing n columns a template for a data line has to contain "n+1" items and a
template for a separator line "2*n+1" items.
The items in a data template specify the strings used to separate the column information.
Together with the corresponding items in the separator templates they form the vertical
lines in the report.
Note that the corresponding items in all defined templates have to be of equal length.
This will be checked by the report object. The first item defines the leftmost vertical
line and the last item defines the rightmost vertical line. The item at index k
("1",...,"n-2") separates the information in the columns "k-1" and "k".
The items in a separator template having an even-numbered index ("0","2",...) specify the
column separators. The item at index "2*k" ("0","2",...,"2*n") corresponds to the items at
index "k" in the data templates.
The items in a separator template having an odd-numbered index ("1","3",...) specify the
strings used to form the horizontal lines in the separator lines. The item at index
"2*k+1" ("1","3",...,"2*n+1") corresponds to column "k". When generating the horizontal
lines the items are replicated to be at least as long as the size of their column and then
cut to the exact size.
STYLES
Styles are a way for the user of this package to define common configurations for report
objects and then use them later during the actual instantiation of report objects. They
are defined as tcl scripts which when executed configure the report object into the
requested configuration.
The command to define styles is ::report::defstyle. Its last argument is the tcl script
performing the actual reconfiguration of the report object to obtain the requested style.
In this script the names of all previously defined styles are available as commands, as
are all commands found in a safe interpreter and the configuration methods of report
objects. The latter implicitly operate on the object currently executing the style script.
The arguments declared here are available in the script as variables. When calling the
command of a previously declared style all the arguments expected by it have to be defined
in the call.
REPORT METHODS
The following commands are possible for report objects:
reportName destroy
Destroys the report, including its storage space and associated command.
reportName templatecode disable|enable
Enables or disables the usage of the template addressed by the templatecode. Only
the codes for separator lines are allowed here. It is not possible to enable or
disable data lines.
Enabling a template causes the report to check all used templates for
inconsistencies in the definition of the vertical lines (See section TEMPLATES).
reportName templatecode enabled
Returns the whether the template addressed by the templatecode is currently enabled
or not.
reportName templatecode get
Returns the template currently associated with the kind of line addressed by the
templatecode. All known templatecodes are allowed here.
reportName templatecode set templatedata
Sets the template associated with the kind of line addressed by the templatecode to
the new value in templatedata. See section TEMPLATES for constraints on the length
of templates.
reportName tcaption ?size?
Specifies the size of the top caption region as the number rows it occupies in the
matrix to be formatted. Only numbers greater than or equal to zero are allowed. If
no size is specified the command will return the current size instead.
Setting the size of the top caption to a value greater than zero enables the
corresponding data template and causes the report to check all used templates for
inconsistencies in the definition of the vertical lines (See section TEMPLATES).
reportName bcaption size
Specifies the size of the bottom caption region as the number rows it occupies in
the matrix to be formatted. Only numbers greater than or equal to zero are allowed.
If no size is specified the command will return the current size instead.
Setting the size of the bottom caption to a value greater than zero enables the
corresponding data template and causes the report to check all used templates for
inconsistencies in the definition of the vertical lines (See section TEMPLATES).
reportName size column ?number|dyn?
Specifies the size of the column in the output. The value dyn means that the
columnwidth returned by the matrix to be formatted for the specified column shall
be used. The formatting of the column is dynamic. If a fixed number is used instead
of dyn it means that the column has a width of that many characters (padding
excluded). Only numbers greater than zero are allowed here.
If no size specification is given the command will return the current size of the
column instead.
reportName sizes ?size-list?
This method allows the user to specify the sizes of all columns in one call. Its
argument is a list containing the sizes to associate with the columns. The first
item is associated with column 0, the next with column 1, and so on.
If no size-list is specified the command will return a list containing the
currently set sizes instead.
reportName pad column ?left|right|both ?padstring??
This method allows the user to specify padding on the left, right or both sides of
a column. If the padstring is not specified it defaults to a single space
character. Note: An alternative way of specifying the padding is to use vertical
separator strings longer than one character in the templates (See section
TEMPLATES).
If no pad specification is given at all the command will return the current state
of padding for the column instead. This will be a list containing two elements, the
first element the left padding, the second describing the right padding.
reportName justify column ?left|right|center?
Declares how the cell values for a column are filled into the report given the
specified size of a column in the report.
For left and right justification a cell value shorter than the width of the column
is bound with its named edge to the same edge of the column. The other side is
filled with spaces. In the case of center the spaces are placed to both sides of
the value and the left number of spaces is at most one higher than the right number
of spaces.
For a value longer than the width of the column the value is cut at the named edge.
This means for left justification that the tail (i.e. the right part) of the value
is made visible in the output. For center the value is cut at both sides to fit
into the column and the number of characters cut at the left side of the value is
at most one less than the number of characters cut from the right side.
If no justification was specified the command will return the current justification
for the column instead.
reportName printmatrix matrix
Formats the matrix according to the configuration of the report and returns the
resulting string. The matrix has to have the same number of columns as the report.
The matrix also has to have enough rows so that the top and bottom caption regions
do not overlap. The data region is allowed to be empty.
reportName printmatrix2channel matrix chan
Formats the matrix according to the configuration of the report and writes the
result into the channel chan. The matrix has to have the same number of columns as
the report. The matrix also has to have enough rows so that the top and bottom
caption regions do not overlap. The data region is allowed to be empty.
reportName columns
Returns the number of columns in the report.
The methods size, pad and justify all take a column index as their first argument. This
index is allowed to use all the forms of an index as accepted by the lindex command. The
allowed range for indices is "0,...,[reportName columns]-1".
EXAMPLES
Our examples define some generally useful report styles.
A simple table with lines surrounding all information and vertical separators, but without
internal horizontal separators.
::report::defstyle simpletable {} {
data set [split "[string repeat "| " [columns]]|"]
top set [split "[string repeat "+ - " [columns]]+"]
bottom set [top get]
top enable
bottom enable
}
An extension of a simpletable, see above, with a title area.
::report::defstyle captionedtable {{n 1}} {
simpletable
topdata set [data get]
topcapsep set [top get]
topcapsep enable
tcaption $n
}
Given the definitions above now an example which actually formats a matrix into a tabular
report. It assumes that the matrix actually contains useful data.
% ::struct::matrix m
% # ... fill m with data, assume 5 columns
% ::report::report r 5 style captionedtable 1
% r printmatrix m
+---+-------------------+-------+-------+--------+
|000|VERSIONS: |2:8.4a3|1:8.4a3|1:8.4a3%|
+---+-------------------+-------+-------+--------+
|001|CATCH return ok |7 |13 |53.85 |
|002|CATCH return error |68 |91 |74.73 |
|003|CATCH no catch used|7 |14 |50.00 |
|004|IF if true numeric |12 |33 |36.36 |
|005|IF elseif |15 |47 |31.91 |
| |true numeric | | | |
+---+-------------------+-------+-------+--------+
%
% # alternate way of doing the above
% m format 2string r
BUGS, IDEAS, FEEDBACK
This document, and the package it describes, will undoubtedly contain bugs and other
problems. Please report such in the category report of the Tcllib SF Trackers
[http://sourceforge.net/tracker/?group_id=12883]. Please also report any ideas for
enhancements you may have for either package and/or documentation.
KEYWORDS
matrix, report, table
CATEGORY
Data structures
COPYRIGHT
Copyright (c) 2002 Andreas Kupries <andreas_kupries@users.sourceforge.net>