'\"
'\" Generated from file 'html\&.man' by tcllib/doctools with format 'nroff'
'\"
.TH "html" n 1\&.4 tcllib "HTML Generation"
.\" The -*- nroff -*- definitions below are for supplemental macros used
.\" in Tcl/Tk manual entries.
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\h'-1.5n'\L'|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\l'|0u-1.5n\(ul'
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.SH "STANDARD OPTIONS"
.LP
.nf
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..
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.ft R
.LP
See the \\*(So manual entry for details on the standard options.
..
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.LP
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.ta 4c
Command-Line Name:	\\fB\\$1\\fR
Database Name:	\\fB\\$2\\fR
Database Class:	\\fB\\$3\\fR
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.IP
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.BS
.SH NAME
html \- Procedures to generate HTML structures
.SH SYNOPSIS
package require \fBTcl  8\&.2\fR
.sp
package require \fBhtml  ?1\&.4?\fR
.sp
\fB::html::author\fR \fIauthor\fR
.sp
\fB::html::bodyTag\fR \fIargs\fR
.sp
\fB::html::cell\fR \fIparam value\fR ?\fItag\fR?
.sp
\fB::html::checkbox\fR \fIname value\fR
.sp
\fB::html::checkSet\fR \fIkey sep list\fR
.sp
\fB::html::checkValue\fR \fIname\fR ?\fIvalue\fR?
.sp
\fB::html::closeTag\fR
.sp
\fB::html::default\fR \fIkey\fR ?\fIparam\fR?
.sp
\fB::html::description\fR \fIdescription\fR
.sp
\fB::html::end\fR
.sp
\fB::html::eval\fR \fIarg\fR ?\fIargs\fR?
.sp
\fB::html::extractParam\fR \fIparam key\fR ?\fIvarName\fR?
.sp
\fB::html::font\fR \fIargs\fR
.sp
\fB::html::for\fR \fIstart test next body\fR
.sp
\fB::html::foreach\fR \fIvarlist1 list1\fR ?\fIvarlist2 list2 \&.\&.\&.\fR? \fIbody\fR
.sp
\fB::html::formValue\fR \fIname\fR ?\fIdefvalue\fR?
.sp
\fB::html::getFormInfo\fR \fIargs\fR
.sp
\fB::html::getTitle\fR
.sp
\fB::html::h\fR \fIlevel string\fR ?\fIparam\fR?
.sp
\fB::html::h1\fR \fIstring\fR ?\fIparam\fR?
.sp
\fB::html::h2\fR \fIstring\fR ?\fIparam\fR?
.sp
\fB::html::h3\fR \fIstring\fR ?\fIparam\fR?
.sp
\fB::html::h4\fR \fIstring\fR ?\fIparam\fR?
.sp
\fB::html::h5\fR \fIstring\fR ?\fIparam\fR?
.sp
\fB::html::h6\fR \fIstring\fR ?\fIparam\fR?
.sp
\fB::html::hdrRow\fR \fIargs\fR
.sp
\fB::html::head\fR \fItitle\fR
.sp
\fB::html::headTag\fR \fIstring\fR
.sp
\fB::html::html_entities\fR \fIstring\fR
.sp
\fB::html::if\fR \fIexpr1 body1\fR ?\fBelseif\fR \fIexpr2 body2 \&.\&.\&.\fR? ?\fBelse\fR \fIbodyN\fR?
.sp
\fB::html::init\fR ?\fIlist\fR?
.sp
\fB::html::keywords\fR \fIargs\fR
.sp
\fB::html::mailto\fR \fIemail\fR ?\fIsubject\fR?
.sp
\fB::html::meta\fR \fIargs\fR
.sp
\fB::html::minorList\fR \fIlist\fR ?\fIordered\fR?
.sp
\fB::html::minorMenu\fR \fIlist\fR ?\fIsep\fR?
.sp
\fB::html::nl2br\fR \fIstring\fR
.sp
\fB::html::openTag\fR \fItag\fR ?\fIparam\fR?
.sp
\fB::html::paramRow\fR \fIlist\fR ?\fIrparam\fR? ?\fIcparam\fR?
.sp
\fB::html::passwordInput\fR ?\fIname\fR?
.sp
\fB::html::passwordInputRow\fR \fIlabel\fR ?\fIname\fR?
.sp
\fB::html::quoteFormValue\fR \fIvalue\fR
.sp
\fB::html::radioSet\fR \fIkey sep list\fR
.sp
\fB::html::radioValue\fR \fIname value\fR
.sp
\fB::html::refresh\fR \fIseconds url\fR
.sp
\fB::html::row\fR \fIargs\fR
.sp
\fB::html::select\fR \fIname param choices\fR ?\fIcurrent\fR?
.sp
\fB::html::selectPlain\fR \fIname param choices\fR ?\fIcurrent\fR?
.sp
\fB::html::set\fR \fIvar val\fR
.sp
\fB::html::submit\fR \fIlabel\fR ?\fIname\fR?
.sp
\fB::html::tableFromArray\fR \fIarrname\fR ?\fIparam\fR? ?\fIpat\fR?
.sp
\fB::html::tableFromList\fR \fIquerylist\fR ?\fIparam\fR?
.sp
\fB::html::textarea\fR \fIname\fR ?\fIparam\fR? ?\fIcurrent\fR?
.sp
\fB::html::textInput\fR \fIname value args\fR
.sp
\fB::html::textInputRow\fR \fIlabel name value args\fR
.sp
\fB::html::varEmpty\fR \fIname\fR
.sp
\fB::html::while\fR \fItest body\fR
.sp
.BE
.SH DESCRIPTION
.PP
The package \fBhtml\fR provides commands that generate HTML\&.
These commands typically return an HTML string as their result\&. In
particular, they do not output their result to \fBstdout\fR\&.
.PP
The command \fB::html::init\fR should be called early to initialize
the module\&.  You can also use this procedure to define default values
for HTML tag parameters\&.
.TP
\fB::html::author\fR \fIauthor\fR
\fISide effect only\fR\&.  Call this before \fB::html::head\fR to
define an author for the page\&.  The author is noted in a comment in
the HEAD section\&.
.TP
\fB::html::bodyTag\fR \fIargs\fR
Generate a \fIbody\fR tag\&.  The tag parameters are taken from \fIargs\fR or
from the body\&.* attributes define with \fB::html::init\fR\&.
.TP
\fB::html::cell\fR \fIparam value\fR ?\fItag\fR?
Generate a \fItd\fR (or \fIth\fR) tag, a value, and a closing
\fItd\fR (or \fIth\fR) tag\&. The
tag parameters come from \fIparam\fR or TD\&.* attributes defined with
\fB::html::init\fR\&.  This uses \fB::html::font\fR to insert a standard
\fIfont\fR tag into the table cell\&. The \fItag\fR argument defaults to "td"\&.
.TP
\fB::html::checkbox\fR \fIname value\fR
Generate a \fIcheckbox\fR form element with the specified name and value\&.
This uses \fB::html::checkValue\fR\&.
.TP
\fB::html::checkSet\fR \fIkey sep list\fR
Generate a set of \fIcheckbox\fR form elements and associated labels\&.  The
\fIlist\fR should contain an alternating list of labels and values\&.
This uses \fB::html::checkbox\fR\&. All the \fIcheckbox\fR buttons share the
same \fIkey\fR for their name\&. The \fIsep\fR is text used to separate
the elements\&.
.TP
\fB::html::checkValue\fR \fIname\fR ?\fIvalue\fR?
Generate the "name=\fIname\fR value=\fIvalue\fR for a \fIcheckbox\fR form
element\&.  If the CGI variable \fIname\fR has the value \fIvalue\fR,
then SELECTED is added to the return value\&. \fIvalue\fR defaults to
"1"\&.
.TP
\fB::html::closeTag\fR
Pop a tag off the stack created by \fB::html::openTag\fR and generate
the corresponding close tag (e\&.g\&., </body>)\&.
.TP
\fB::html::default\fR \fIkey\fR ?\fIparam\fR?
This procedure is used by \fB::html::tagParam\fR to generate the name,
value list of parameters for a tag\&.  The \fB::html::default\fR
procedure is used to generate default values for those items not
already in \fIparam\fR\&.  If the value identified by \fIkey\fR matches
a value in \fIparam\fR then this procedure returns the empty string\&.
Otherwise, it returns a "parameter=value" string for a form element
identified by \fIkey\fR\&.  The \fIkey\fR has the form "tag\&.parameter"
(e\&.g\&., body\&.bgcolor)\&.  Use \fB::html::init\fR to register default
values\&. \fIparam\fR defaults to the empty string\&.
.TP
\fB::html::description\fR \fIdescription\fR
\fISide effect only\fR\&.  Call this before \fB::html::head\fR to
define a description \fImeta\fR tag for the page\&.  This tag is generated
later in the call to \fB::html::head\fR\&.
.TP
\fB::html::end\fR
Pop all open tags from the stack and generate the corresponding close
HTML tags, (e\&.g\&., </body></html>)\&.
.TP
\fB::html::eval\fR \fIarg\fR ?\fIargs\fR?
This procedure is similar to the built-in Tcl \fBeval\fR command\&.  The
only difference is that it returns "" so it can be called from an HTML
template file without appending unwanted results\&.
.TP
\fB::html::extractParam\fR \fIparam key\fR ?\fIvarName\fR?
This is a parsing procedure that extracts the value of \fIkey\fR from
\fIparam\fR, which is a HTML-style "name=quotedvalue" list\&.
\fIvarName\fR is used as the name of a Tcl variable that is changed to
have the value found in the parameters\&.  The function returns 1 if the
parameter was found in \fIparam\fR, otherwise it returns 0\&.  If the
\fIvarName\fR is not specified, then \fIkey\fR is used as the variable
name\&.
.TP
\fB::html::font\fR \fIargs\fR
Generate a standard \fIfont\fR tag\&.  The parameters to the tag are taken
from \fIargs\fR and the HTML defaults defined with \fB::html::init\fR\&.
.TP
\fB::html::for\fR \fIstart test next body\fR
This procedure is similar to the built-in Tcl \fBfor\fR control
structure\&.  Rather than evaluating the body, it returns the subst'ed
\fIbody\fR\&. Each iteration of the loop causes another string to be
concatenated to the result value\&.
.TP
\fB::html::foreach\fR \fIvarlist1 list1\fR ?\fIvarlist2 list2 \&.\&.\&.\fR? \fIbody\fR
This procedure is similar to the built-in Tcl \fBforeach\fR control
structure\&.  Rather than evaluating the body, it returns the subst'ed
\fIbody\fR\&.  Each iteration of the loop causes another string to be
concatenated to the result value\&.
.TP
\fB::html::formValue\fR \fIname\fR ?\fIdefvalue\fR?
Return a name and value pair, where the value is initialized from
existing CGI data, if any\&.  The result has this form:
.sp
.CS


  name="fred" value="freds value"

.CE
.TP
\fB::html::getFormInfo\fR \fIargs\fR
Generate hidden fields to capture form values\&.  If \fIargs\fR is
empty, then hidden fields are generated for all CGI values\&.  Otherwise
args is a list of string match patterns for form element names\&.
.TP
\fB::html::getTitle\fR
Return the title string, with out the surrounding \fItitle\fR tag,
set with a previous call to \fB::html::title\fR\&.
.TP
\fB::html::h\fR \fIlevel string\fR ?\fIparam\fR?
Generate a heading (e\&.g\&., \fIh\fBlevel\fR\fR) tag\&.  The \fIstring\fR is nested in the
heading, and \fIparam\fR is used for the tag parameters\&.
.TP
\fB::html::h1\fR \fIstring\fR ?\fIparam\fR?
Generate an \fIh1\fR tag\&.  See \fB::html::h\fR\&.
.TP
\fB::html::h2\fR \fIstring\fR ?\fIparam\fR?
Generate an \fIh2\fR tag\&.  See \fB::html::h\fR\&.
.TP
\fB::html::h3\fR \fIstring\fR ?\fIparam\fR?
Generate an \fIh3\fR tag\&.  See \fB::html::h\fR\&.
.TP
\fB::html::h4\fR \fIstring\fR ?\fIparam\fR?
Generate an \fIh4\fR tag\&.  See \fB::html::h\fR\&.
.TP
\fB::html::h5\fR \fIstring\fR ?\fIparam\fR?
Generate an \fIh5\fR tag\&.  See \fB::html::h\fR\&.
.TP
\fB::html::h6\fR \fIstring\fR ?\fIparam\fR?
Generate an \fIh6\fR tag\&.  See \fB::html::h\fR\&.
.TP
\fB::html::hdrRow\fR \fIargs\fR
Generate a table row, including \fItr\fR and \fIth\fR tags\&.
Each value in \fIargs\fR is place into its own table cell\&.
This uses \fB::html::cell\fR\&.
.TP
\fB::html::head\fR \fItitle\fR
Generate the \fIhead\fR section that includes the page \fItitle\fR\&.
If previous calls have been made to
\fB::html::author\fR,
\fB::html::keywords\fR,
\fB::html::description\fR,
or
\fB::html::meta\fR
then additional tags are inserted into the \fIhead\fR section\&.
This leaves an open \fIhtml\fR tag pushed on the stack with
\fB::html::openTag\fR\&.
.TP
\fB::html::headTag\fR \fIstring\fR
Save a tag for inclusion in the \fIhead\fR section generated by
\fB::html::head\fR\&.  The \fIstring\fR is everything in the tag except
the enclosing angle brackets, < >\&.
.TP
\fB::html::html_entities\fR \fIstring\fR
This command replaces all special characters in the \fIstring\fR with
their HTML entities and returns the modified text\&.
.TP
\fB::html::if\fR \fIexpr1 body1\fR ?\fBelseif\fR \fIexpr2 body2 \&.\&.\&.\fR? ?\fBelse\fR \fIbodyN\fR?
This procedure is similar to the built-in Tcl \fBif\fR control
structure\&.  Rather than evaluating the body of the branch that is
taken, it returns the subst'ed \fIbody\fR\&.  Note that the syntax is
slightly more restrictive than that of the built-in Tcl \fBif\fR
control structure\&.
.TP
\fB::html::init\fR ?\fIlist\fR?
\fB::html::init\fR accepts a Tcl-style name-value list that defines
values for items with a name of the form "tag\&.parameter"\&.  For
example, a default with key "body\&.bgcolor" defines the background
color for the \fIbody\fR tag\&.
.TP
\fB::html::keywords\fR \fIargs\fR
\fISide effect only\fR\&.  Call this before \fB::html::head\fR to
define a keyword \fImeta\fR tag for the page\&.  The \fImeta\fR tag
is included in the result of \fB::html::head\fR\&.
.TP
\fB::html::mailto\fR \fIemail\fR ?\fIsubject\fR?
Generate a hypertext link to a mailto: URL\&.
.TP
\fB::html::meta\fR \fIargs\fR
\fISide effect only\fR\&.  Call this before \fB::html::head\fR to
define a \fImeta\fR tag for the page\&.  The \fIargs\fR is a Tcl-style name,
value list that is used for the name= and value= parameters for the
\fImeta\fR tag\&.  The \fImeta\fR tag is included in the result of
\fB::html::head\fR\&.
.TP
\fB::html::minorList\fR \fIlist\fR ?\fIordered\fR?
Generate an ordered or unordered list of links\&.  The \fIlist\fR is a
Tcl-style name, value list of labels and urls for the links\&.
\fIordered\fR is a boolean used to choose between an ordered or
unordered list\&. It defaults to \fBfalse\fR\&.
.TP
\fB::html::minorMenu\fR \fIlist\fR ?\fIsep\fR?
Generate a series of hypertext links\&.  The \fIlist\fR is a Tcl-style
name, value list of labels and urls for the links\&.  The \fIsep\fR is
the text to put between each link\&. It defaults to " | "\&.
.TP
\fB::html::nl2br\fR \fIstring\fR
This command replaces all line-endings in the \fIstring\fR with a
\fIbr\fR tag and returns the modified text\&.
.TP
\fB::html::openTag\fR \fItag\fR ?\fIparam\fR?
Push \fItag\fR onto a stack and generate the opening tag for
\fItag\fR\&. Use \fB::html::closeTag\fR to pop the tag from the
stack\&. The second argument provides any tag arguments, as a
list whose elements are formatted to be in the form
"\fBkey\fR=\fBvalue\fR"\&.
.TP
\fB::html::paramRow\fR \fIlist\fR ?\fIrparam\fR? ?\fIcparam\fR?
Generate a table row, including \fItr\fR and \fItd\fR tags\&. Each value in
\fIlist\fR is placed into its own table cell\&. This uses
\fB::html::cell\fR\&. The value of \fIrparam\fR is used as parameter for
the \fItr\fR tag\&. The value of \fIcparam\fR is passed to \fB::html::cell\fR
as parameter for the \fItd\fR tags\&.
.TP
\fB::html::passwordInput\fR ?\fIname\fR?
Generate an \fIinput\fR tag of type \fIpassword\fR\&. The \fIname\fR defaults to
"password"\&.
.TP
\fB::html::passwordInputRow\fR \fIlabel\fR ?\fIname\fR?
Format a table row containing a label and an \fIinput\fR tag of type
\fIpassword\fR\&. The \fIname\fR defaults to "password"\&.
.TP
\fB::html::quoteFormValue\fR \fIvalue\fR
Quote special characters in \fIvalue\fR by replacing them with HTML
entities for quotes, ampersand, and angle brackets\&.
.TP
\fB::html::radioSet\fR \fIkey sep list\fR
Generate a set of \fIinput\fR tags of type \fIradio\fR and an associated text
label\&.  All the radio buttons share the same \fIkey\fR for their name\&.
The \fIsep\fR is text used to separate the elements\&.  The \fIlist\fR
is a Tcl-style label, value list\&.
.TP
\fB::html::radioValue\fR \fIname value\fR
Generate the "name=\fIname\fR value=\fIvalue\fR for a \fIradio\fR form
element\&.  If the CGI variable \fIname\fR has the value \fIvalue\fR,
then SELECTED is added to the return value\&.
.TP
\fB::html::refresh\fR \fIseconds url\fR
Set up a refresh \fImeta\fR tag\&. Call this before \fB::html::head\fR and the
HEAD section will contain a \fImeta\fR tag that causes the document to
refresh in \fIseconds\fR seconds\&.  The \fIurl\fR is optional\&.  If
specified, it specifies a new page to load after the refresh interval\&.
.TP
\fB::html::row\fR \fIargs\fR
Generate a table row, including \fItr\fR and \fItd\fR tags\&.  Each value in
\fIargs\fR is place into its own table cell\&. This uses
\fB::html::cell\fR\&. Ignores any default information set up via
\fB::html::init\fR\&.
.TP
\fB::html::select\fR \fIname param choices\fR ?\fIcurrent\fR?
Generate a \fIselect\fR form element and nested \fIoption\fR tags\&. The \fIname\fR
and \fIparam\fR are used to generate the \fIselect\fR tag\&. The \fIchoices\fR
list is a Tcl-style name, value list\&.
.TP
\fB::html::selectPlain\fR \fIname param choices\fR ?\fIcurrent\fR?
Like \fB::html::select\fR except that \fIchoices\fR is a Tcl list of
values used for the \fIoption\fR tags\&.  The label and the value for each
\fIoption\fR are the same\&.
.TP
\fB::html::set\fR \fIvar val\fR
This procedure is similar to the built-in Tcl \fBset\fR command\&.  The
main difference is that it returns "" so it can be called from an HTML
template file without appending unwanted results\&.  The other
difference is that it must take two arguments\&.
.TP
\fB::html::submit\fR \fIlabel\fR ?\fIname\fR?
Generate an \fIinput\fR tag of type \fIsubmit\fR\&. \fIname\fR defaults to "submit"\&.
.TP
\fB::html::tableFromArray\fR \fIarrname\fR ?\fIparam\fR? ?\fIpat\fR?
Generate a two-column \fItable\fR and nested rows to display a Tcl array\&. The
table gets a heading that matches the array name, and each generated row
contains a name, value pair\&. The array names are sorted (\fBlsort\fR without
special options)\&. The argument \fIparam\fR is for the \fItable\fR tag and has
to contain a pre-formatted string\&. The \fIpat\fR is a \fBstring match\fR
pattern used to select the array elements to show in the table\&. It defaults to
\fB*\fR, i\&.e\&. the whole array is shown\&.
.TP
\fB::html::tableFromList\fR \fIquerylist\fR ?\fIparam\fR?
Generate a two-column \fItable\fR and nested rows to display \fIquerylist\fR,
which is a Tcl dictionary\&. Each generated row contains a name, value pair\&. The
information is shown in the same order as specified in the dictionary\&. The
argument \fIparam\fR is for the \fItable\fR tag  and has to contain a
pre-formatted string\&.
.TP
\fB::html::textarea\fR \fIname\fR ?\fIparam\fR? ?\fIcurrent\fR?
Generate a \fItextarea\fR tag wrapped around its current values\&.
.TP
\fB::html::textInput\fR \fIname value args\fR
Generate an \fIinput\fR form tag with type \fItext\fR\&.  This uses
\fB::html::formValue\fR\&.  The args is any additional tag attributes
you want to put into the \fIinput\fR tag\&.
.TP
\fB::html::textInputRow\fR \fIlabel name value args\fR
Generate an \fIinput\fR form tag with type \fItext\fR formatted into a table row
with an associated label\&.  The args is any additional tag attributes
you want to put into the \fIinput\fR tag\&.
.TP
\fB::html::varEmpty\fR \fIname\fR
This returns 1 if the named variable either does not exist or has the
empty string for its value\&.
.TP
\fB::html::while\fR \fItest body\fR
This procedure is similar to the built-in Tcl \fBwhile\fR control
structure\&.  Rather than evaluating the body, it returns the subst'ed
\fIbody\fR\&.  Each iteration of the loop causes another string to be
concatenated to the result value\&.
.PP
.SH "BUGS, IDEAS, FEEDBACK"
This document, and the package it describes, will undoubtedly contain
bugs and other problems\&.
Please report such in the category \fIhtml\fR of the
\fITcllib Trackers\fR [http://core\&.tcl\&.tk/tcllib/reportlist]\&.
Please also report any ideas for enhancements you may have for either
package and/or documentation\&.
.SH "SEE ALSO"
htmlparse, ncgi
.SH KEYWORDS
checkbox, checkbutton, form, html, radiobutton, table
.SH CATEGORY
CGI programming