HXADDID(1) HTML-XML-utils HXADDID(1)NAMEhxaddid - add IDs to selected elements
SYNOPSIShxaddid [ -x ] [--] elem|.class|elem.class [ file-or-URL ]
DESCRIPTION
The hxaddid command copies an HTML or XML file to standard output,
while adding element IDs to the specified elements or classes.
For example, given the input
<p>A paragraph without an ID</p>
the command
hxaddid p
will output
<p id="a-paragraph">A paragraph without an ID</p>
If you specify a class using .class then IDs will only be added to ele‐
ments that contain that class. And if you specify an element and a
class using elem.class then IDs will only be added to the specified
elements that contain the specified class.
If two elements would naturally generate the same ID, a number is added
to the ID name (starting with 0) to make sure the IDs are unique. IDs
are not added to matching elements that already contain an ID.
OPTIONS
The following options are supported:
-x Use XML conventions: empty elements are written with a slash
at the end: <IMG />. Also causes the element to be matched
case-sensitively.
OPERANDS
The following operands are supported:
elem The name of element to select.
.class The name of class to select.
elem.class
The name of element that contains class to select.
file-or-URL
The name or URL of an HTML or XHTML file.
EXIT STATUS
The following exit values are returned:
0 Successful completion.
> 0 An error occurred in the parsing of one of the HTML or XML
files.
ENVIRONMENT
To use a proxy to retrieve remote files, set the environment variables
http_proxy or ftp_proxy. E.g., http_proxy="http://localhost:8080/"
BUGS
Assumes UTF-8 as input. Doesn't expand character entities. Instead pipe
the input through hxunent(1) and asc2xml(1) to convert it to UTF-8.
hxaddid tries first to generate "readable" IDs, by forming the ID out
of the letters and digits found in the content of the element and falls
back to generating arbitrary IDs if it doesn't find enough. However,
the algorithm in this version is primitive and only gives reasonable
results for ASCII letters and digits.
Remote files (specified with a URL) are currently only supported for
HTTP. Password-protected files or files that depend on HTTP "cookies"
are not handled. (You can use tools such as curl(1) or wget(1) to
retrieve such files.)
SEE ALSOasc2xml(1), hxprune(1), hxnormalize(1), hxnum(1), hxtoc(1), hxunent(1),
xml2asc(1), UTF-8 (RFC 2279)
6.x 10 Jul 2011 HXADDID(1)
