use Parse::DebianChangelog;
my $chglog = Parse::DebianChangelog->init( { infile => 'debian/changelog',
HTML => { outfile => 'changelog.html' } );
$chglog->html;
# the following is semantically equivalent
my $chglog = Parse::DebianChangelog->init();
$chglog->parse( { infile => 'debian/changelog' } );
$chglog->html( { outfile => 'changelog.html' } );
my $changes = $chglog->dpkg_str( { since => '1.0-1' } );
print $changes;
The parser tries to ignore most cruft like # or /* */ style comments, CVS comments, vim variables, emacs local variables and stuff from older changelogs with other formats at the end of the file. NOTE: most of these are ignored silently currently, there is no parser error issued for them. This should become configurable in the future.
Beside giving access to the details of the parsed file via the ``data'' method, Parse::DebianChangelog also supports converting these changelogs to various other formats. These are currently:
Creates a new object instance. Takes a reference to a hash as optional argument, which is interpreted as configuration options. There are currently no supported general configuration options, but see the other methods for more specific configuration options which can also specified to "init".
If "infile", "instring" or "handle" are specified (see parse), "parse()" is called from "init". If a fatal error is encountered during parsing (e.g. the file can't be opened), "init" will not return a valid object but "undef"!
reset_parse_errors
Can be used to delete all information about errors ocurred during previous parse runs. Note that "parse()" also calls this method.
get_parse_errors
Returns all error messages from the last parse run. If called in scalar context returns a human readable string representation. If called in list context returns an array of arrays. Each of these arrays contains
NOTE: This format isn't stable yet and may change in later versions of this module.
get_error
Get the last non-parser error (e.g. the file to parse couldn't be opened).
parse
Parses either the file named in configuration item "infile", the string saved in configuration item "instring" or the open file handle saved in the configuration item "handle". In the latter case, the handle can be named by using the optional configuration item "handlename". Accepts a hash ref as optional argument which can contain configuration items.
Returns "undef" in case of error (e.g. ``file not found'', not parse errors) and the object if successful. If "undef" was returned, you can get the reason for the failure by calling the get_error method.
data
"data" returns an array (if called in list context) or a reference to an array of Parse::DebianChangelog::Entry objects which each represent one entry of the changelog.
This is currently merely a placeholder to enable users to get to the raw data, expect changes to this API in the near future.
This method supports the common output options described in section ``COMMON OUTPUT OPTIONS''.
dpkg
(and dpkg_str)
"dpkg" returns a hash (in list context) or a hash reference (in scalar context) where the keys are field names and the values are field values. The following fields are given:
"dpkg_str" returns a stringified version of this hash which should look exactly like the output of dpkg-parsechangelog(1). The fields are ordered like in the list above.
Both methods only support the common output options described in section ``COMMON OUTPUT OPTIONS''.
dpkg_str
See dpkg.
rfc822
(and rfc822_str)
"rfc822" returns an array of hashes (in list context) or a reference to this array (in scalar context) where each hash represents one entry in the changelog. For the format of such a hash see the description of the ``dpkg'' method (while ignoring the remarks about which values are taken from the first entry).
"rfc822_str" returns a stringified version of this hash which looks similar to the output of dpkg-parsechangelog but instead of one stanza the output contains one stanza for each entry.
Both methods only support the common output options described in section ``COMMON OUTPUT OPTIONS''.
rfc822_str
See rfc822.
xml
(and xml_str)
"xml" converts the changelog to some free-form (i.e. there is neither a DTD or a schema for it) XML.
The method "xml_str" is an alias for "xml".
Both methods support the common output options described in section ``COMMON OUTPUT OPTIONS'' and additionally the following configuration options (as usual to give in a hash reference as parameter to the method call):
xml_str
See xml.
html
(and html_str)
"html" converts the changelog to a HTML file with some nice features such as a quick-link bar with direct links to every entry. The HTML is generated with the help of HTML::Template. If you want to change the output you should use the default template provided with this module as a base and read the documentation of HTML::Template to understand how to edit it.
The method "html_str" is an alias for "html".
Both methods support the common output options described in section ``COMMON OUTPUT OPTIONS'' and additionally the following configuration options (as usual to give in a hash reference as parameter to the method call):
html_str
See html.
init_filters
not yet documented
apply_filters
not yet documented
add_filter, delete_filter, replace_filter
(works exactly like the "-v" option of dpkg-parsechangelog).
The following options also supported by all output methods but don't take version numbers as values:
Some examples for the above options. Imagine an example changelog with entries for the versions 1.2, 1.3, 2.0, 2.1, 2.2, 3.0 and 3.1.
Call Included entries
format({ since => '2.0' }) 3.1, 3.0, 2.2
format({ until => '2.0' }) 1.3, 1.2
format({ from => '2.0' }) 3.1, 3.0, 2.2, 2.1, 2.0
format({ to => '2.0' }) 2.0, 1.3, 1.2
format({ count => 2 } 3.1, 3.0
format({ count => -2 } 1.3, 1.2
format({ count => 3,
offset => 2 } 2.2, 2.1, 2.0
format({ count => 2,
offset => -3 } 2.0, 1.3
format({ count => -2,
offset => 3 } 3.0, 2.2
format({ count => -2,
offset => -3 } 2.2, 2.1
Any combination of one option of "since" and "from" and one of "until" and "to" returns the intersection of the two results with only one of the options specified.
Description of the Debian changelog format in the Debian policy: <http://www.debian.org/doc/debian-policy/ch-source.html#s-dpkgchangelog>.
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA