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WEBLINT++(1) User Contributed Perl Documentation WEBLINT++(1)
NAME
weblint++
SYNOPSIS
weblint++ [-c] [-e] [-E] [-f] [-l] [-M] [-t] [-T] [-V]
[-C [config] ] [-d file] [-m [md5 digest] ] [-R template]
[-s file] [-u username -p password] [-v [level | 1] ]
url
weblint++ -h
NOTE: You will not see any output without the -v switch
DESCRIPTION
The "weblint++" program fetches a web resource and runs the response
through an HTML lint filter as well as other tests.
You can use this program interactively if you specify the "-v" switch,
or use it in batch mode by observing the exit status.
OPTIONS
Command line switches cannot be grouped. You must specify them
separately. If you do it correctly, things will work.
-l -T -m CORRECT
If you do it incorrectly, you get undefined behaviour.
-ltm WRONG BAD BAD INCORRECT NAUGHTY
-c The "-c" switch checks IMG and A links if "url" returns a
'text/html' resource. Each problem link adds 1 to the exit status
value. With the "-v" switch, "-c" reports the status of just the
status of bad links. The status of all links is available to the
"-R" template.
-C [ config ]
The "-C" switch loads configuration information from a file. If
you do not specify a file then the program looks in the current
directory for a file named .weblintrc. If it does not find that
file, it looks in your home directory.
See the Configuration section for details on allowed directives.
This switch requires "ConfigReader::Simple".
-d file
The "-d" switch performs a diff between the HTTP response message
body and the specified file. The program exits if they differ,
unless "-e" is present.
-e When present, the "-e" switch prevents the program from exiting
from errors with the "-d" or "-m" switches. This way the program
can continue and eventually print a report with the "-R" switch.
-E When present, the "-e" switch prevents the program from creating
reports unless it has web problems to report.
-f file
Read the resources to check from "file" instead of from the command
line.
This functionality is unimplemented.
-h Print a help message and exit.
-l Run the contents of "url", if it is 'text/html' through
"HTML::Lint". Each lint warning adds 1 to the exit status value.
With the "-v" switch, it prints the results to standard output.
The test will be skipped if "HTML::Lint" cannot be loaded.
-m [md5 digest]
The "-m" switch by itself reports the MD5 digest (in hex) of the
message body of the request from URL. The program exits if the
digests do not match, unless "-e" is present.
The test will be skipped if "Digest::MD5" cannot be loaded.
-M Email the report (from "-R"). You should specify the mail headers
in the template, including the To: header. The report will not be
printed to standard output.
This functionality is unimplemented.
-p password
The "-p" switch specifies the Basic authentication password.
-R file
The "-R" switch specifies the report template file. Once the
program fills in the template, it prints it to standard output
unless you specified the "-M" switch to email the report instead.
It uses "Text::Template", and skips the report if that module is
not available.
The report will be skipped if "Text::Template" cannot be loaded,
unless "Data::Dumper" can dump the report data structure to STDOUT.
-s file
The "-s" switch specifies the file to save the HTTP message body
to.
-t The "-t" switch reports the download time of the resource, using
"Time::HiRes".
The test will be skipped if "Time::HiRes" cannot be loaded.
-T The "-T" switch reports the total download size of the resource.
For 'text/html' resources, this size includes the sizes of the IMG
links.
The test will be skipped if "HTTP::Size" cannot be loaded.
-u username
The "-u" switch specifies the Basic authentication user name.
-v [level]
The "-v" switch turns on verbose reporting. The greater the value
of "level", the more verbose the reporting. If you do not specify
"-v", you will see no output, although you can observe the results
from the exit status.
The "-v" switch implies "-t".
-V Print the version number and exit.
CONFIGURATION
You can load configuration information from a file with the "-C"
switch. Configuration directives found in the file override those
found on the command line. Some directives must have a value, some may
take a value, and others set flags by their mere presence.
Configuration directives
VERBOSITY [ level ]
Same as the "-v" switch.
USERNAME username
Same as the "-u" switch.
PASSWORD password
Same as the "-p" switch.
CHECK_LINKS
Same as the "-l" switch.
DIFF file
Same as the "-d" switch.
DO_NOT_EXIT
Same as the "-e" switch.
LINKS_FILE file
Same as the "-f" switch.
LINT
Same as the "-l" switch.
MD5 [ md5 ]
Same as the "-m" switch.
MAIL_REPORT
Same as the "-M" switch.
MAIL_PROGRAM
The mail program to use to send mail, such as /usr/lib/sendmail or
/usr/local/bin/qmail-inject. The program name must exist and must
be executable. The template must contain all of the headers. If
you do not specify this directive, then the program attempts to use
"Mail::Sendmail".
MAIL_TO
Sets the To address of the emailed report.
This directive is ignored unless the "-M" and "-R" switches are
used.
MAIL_FROM
Sets the From address of the emailed report.
This directive is ignored unless the "-M" and "-R" switches are
used.
MAIL_SUBJECT
Sets the subject line of the emailed report.
This directive is ignored unless the "-M" and "-R" switches are
used.
REPORT_ON_ERROR_ONLY
Reports will only be made if there was an error. If no problems
were found with the resource, then nothing will be printed to
standard output or mailed.
Same as the "-E" switch.
REPORT template
Same as the "-R" switch.
SAVE_RESPONSE file
Same as the "-s" switch.
TIMER
Same as the "-t" switch.
DOWNLOAD_SIZE
Same as the "-T" switch.
ORDER OF TESTS
The program performs the tests, and possibly exits based on errors, in
this order:
HTTP fetch
time download ( C<-t> switch )
MD5 digest comparison ( C<-m> switch )
File content comparison ( C<-d> switch )
Download size check (C<-T> switch)
HTML Lint warnings (C<-l> switch )
Link Check (C<-c> switch )
REPORT TEMPLATES
The "-R" switch allows you to generate a report from your own template.
These variables are available:
$url
The value of "url" from the command line.
%options
A hash of all of the specified switches, and their values. A value
of 1 indicates either the literal value is 1 or the switch was
specified without a value.
$name
The program name, as reported in $0. You can also simply use $0.
$version
The program version number
$request
The HTTP request, from "HTTP::Request"
$response
The HTTP response, from "HTTP::Response"
$response_code
The HTTP response status code, from "HTTP::Response"
$response_success
True if the request was successful, from "HTTP::Response"
$download_time
The download time of "url".
$data
The message body of the HTTP response.
$type
The content-type of the HTTP response. Some tests only work for
the 'text/html' MIME type.
$fetched_md5
The MD5 digest of the message body of the HTTP response. The "-m"
switch compares its value, $options{m}, to this value.
This applies to the "-m" switch only, and is not set otherwise.
$md5_mismatch
True if the MD5 digest of the message body of the HTTP response
does not match the value specified with the "-m" switch.
This applies to the "-m" switch only, and is not set otherwise.
$diff
The text differences between the message body of the HTTP response
and the filel specified with the "-d" switch.
This applies to the "-d" switch only, and is not set otherwise.
$total_download_size
The total download size of "url", along with image file sizes it
includes, as determined by "HTTP::Size".
This applies to the "-T" switch only, and is not set otherwise.
%total_download_hash
The hash from "HTTP::Size::get_sizes". See that module for
details.
This applies to the "-T" switch only, and is not set otherwise.
$lint_error_count
The number or warnings reported by "HTML::Lint".
This applies to the "-l" switch only, and is not set otherwise.
@lint_errors
The warnings reported by "HTML::Lint".
This applies to the "-l" switch only, and is not set otherwise.
@links
The links extracted from the message body of the HTTP response,
reported by "HTML::SimpleLinkExtor".
This applies to the "-c" switch only, and is not set otherwise.
$link_count
The number of links extracted from the message body of the HTTP
response, reported by "HTML::SimpleLinkExtor".
This applies to the "-c" switch only, and is not set otherwise.
%unique_links
The unique links extracted from the message body of the HTTP
response, reported by "HTML::SimpleLinkExtor", as the keys to this
hash. Their values are the HTTP response code for each link.
This applies to the "-c" switch only, and is not set otherwise.
$unique_link_count
The number of unique links extracted from the message body of the
HTTP response, reported by "HTML::SimpleLinkExtor".
This applies to the "-c" switch only, and is not set otherwise.
$link_errors
The number of unique links from the message body of the HTTP
response which returned HTTP error statuses (4xx, 5xx).
This applies to the "-c" switch only, and is not set otherwise.
$errors
The total number of lint warnings and HTTP errors from link
checking.
This applies to the "-c" and "-l" switches only, and is not set
otherwise.
@error_messages
An array of error messages from all parts of the program, in the
order that the program encountered them.
EXIT STATUSES
-1 The MD5 digest of the HTTP response message body did not match the
digest specified with "-m", if you specified one.
-2 The file specified with the "-d" switch does not exist.
-3 The HTTP response message body differed from the content of the
file specified with <-d>.
< 0 The program encountered HTTP error. The exit code is the HTTP
response code negated. If the HTTP response was 404 (Not Found),
the exit status is -404.
> 0 "HTML::Lint" found HTML errors. The exit status is the number of
HTML errors (from "-l") and broken links (from "-c").
+0 Success. No HTTP errors, no MD5 digest mismatches, no file diffs,
no HTML warnings.
EXAMPLES
Check for HTML errors
These commands interactively check HTML for errors. The "-v" switch
prints results to the terminal and the "-l" switch loads "HTML::Lint".
# from the web
weblint++ -v -l http://www.example.com
# a local file with an absolute path
weblint++ -v -l /usr/local/web/test.html
# a local file with a absolute file: URI
weblint++ -v -l file:/usr/local/web/test.html
# a local file with a relative URI
weblint++ -v -l test.html
# a local file with a relative file: URI
weblint++ -v -l file:test.html
Check for bad HTML anchors and image links
This command check for broken links. You can use the same form of the
URIs in "Check for HTML errors". The "-v" switch prints results to the
terminal and the "-c" switch loads "HTTP::SimpleLinkChecker".
# from the web
weblint++ -v -c http://www.example.com
Get the MD5 digest of a web resource
These command check MD5 digests. You can use the same form of the URIs
in "Check for HTML errors". The "-v" switch prints results to the
terminal and the "-M" switch loads "Digest::MD5".
# get MD5 digest
weblint++ -v -m http://www.example.com
# compare MD5 digest
weblint++ -v -m9ec29ae8d1268b82acb8e3ab7ce0f5c6 http://www.example.com
Get the file contents
This command checks for content differences. You can use the same form
of the URIs in "Check for HTML errors". The "-v" switch prints results
to the terminal and the "-d" switch loads "Text::Diff".
weblint++ -v -d should_be/test.html http://www.example.com
Read a configuration file
weblint++ -C .configrc http://www.example.com
Access a password protected website
This command accesses a password protected website with the Basic
authentication username and password.
weblint++ -v -u username -p password http://www.example.com
Print a report using a template file
This command check for broken links. You can use the same form of the
URIs in "Check for HTML errors". The "-v" switch prints results to the
terminal and the "-R" switch loads "Text::Template" and populates
"template.txt". The program prints the results to STDOUT.
# print the report despite results
weblint++ -R template.txt -l http://www.example.com
The "-E" switch only prints reports if the program needs to report a
problem with the resource. The program will not print a report if it
did not find a problem with the resource. For example, you might use
this as a cron job. If something needs your attention, the program
prints the report to standard output which cron then mails to you. If
everything is okay, you do not get mail.
# print the result only if there were HTML errors
weblint++ -E -R template.txt -l http://www.example.com
# print the result only if there were HTML errors
# or bad link problems
weblint++ -E -R template.txt -l -c http://www.example.com
Save the HTTP response in a file
This command saves the HTTP message body. You can use the same form of
the URIs in "Check for HTML errors". The "-s" switch saves the results
in "saved.txt".
weblint++ -s saved.txt http://www.example.com
Time the download
This command measures the download time of "http://www.example.com".
You can use the same form of the URIs in "Check for HTML errors". The
"-v" switch prints results to the terminal and the "-t" switch loads
"Time::HiRes".
weblint++ -v -t http://www.example.com
Measure the total download size, including linked images
This command measures the download time of "http://www.example.com".
You can use the same form of the URIs in "Check for HTML errors". The
"-v" switch prints results to the terminal and the "-T" switch loads
"HTTP::Size".
weblint++ -v -T http://www.example.com
Perform all tests
# print to the terminal
weblint++ -v -c -l -t -m -T -d test.html http://www.example.com
# print to a template
weblint++ -v -c -l -t -m -T -R template.txt http://www.example.com
BUGS
* to be determined
TO DO
* test various HTTP header things (cookies, etc)
* email templates on error
* implement -M
* implement -f
* allow global configuration files.
* reconsider exiting on errors from -d and -m
* exiting with negative error codes is probably not such a great idea.
maybe -e should allow the exit rather than the other way around.
SOURCE AVAILABILITY
This source is part of a SourceForge project which always has the
latest sources in CVS, as well as all of the previous releases.
https://sourceforge.net/projects/brian-d-foy/
If, for some reason, I disappear from the world, one of the other
members of the project can shepherd this module appropriately. cvs
comm
AUTHOR
brian d foy "<bdfoy@cpan.org>"
COPYRIGHT
Copyright 2002-2007, brian d foy. All rights reserved.
This program may be redistributed under the same turns as Perl itself.
SCRIPT CATEGORIES
Web
SEE ALSO
HTML::Lint, Text::Diff, HTTP::Request, HTTP::Response, Time::HiRes,
Text::Template, HTTP::Size
perl v5.20.2 2007-10-01 WEBLINT++(1)