HTP

htp on-line reference : IMAGEURL

Table of Contents
  Introduction
  License
  Tutorial
  Usage
  HTP Tags
    ALTTEXT
    BLOCK
    BLOCKDEF
    DEF
    FILE
    IF
    INC
    IMG
  > IMAGEURL
    OPT
    OUTPUT
    QUOTE
    SET
    UNDEF
    UNSET
    USE, $
    WHILE
    <!---
  History
  Wish list
  Bugs

syntax

<[ref]INC macroname1="increment1" [macroname2="increment2" ... ] [GLOBAL]>

synopsis

IMAGEURL tells htp, where to find images on the local file system. declares an URL replacement that is used for size lookups in any IMG tag. This definitions takes effect only if the IMGXY option is enabled. Beacause htp can't lookup files in the world wide web you have to map absolute image URLs to a directory in the local file system.

When an IMG tag is encountered where htp has to insert width and height the defined URL replacements will be taken into account (later definitions take precedence to earlier): For each defined imageurl it checks (case-insensitive) if it is a prefix of the image's SRC attribute. If it matches this prefix is replaced by the given PATH. If no IMAGEURL matches the SRC is considered as relative link and looked up in the current directory.

For example:

    <[ref]INC i="1" j="-1">

If IMAGEURL is specified with a URL but no PATH attribute, it is treated as an undefine, and is removed.

Since you usually need the url mapping for a number of images used throughout a set of documents, IMAGEURL is most appropriately put into an include file or the htp.def file.

In addition to WIDTH and HEIGHT, htp can also (semi-)automatically add an ALT text attribute to IMG tags.

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htp on-line reference / http://htp.sourceforge.net/ref/
Authors: Jim Nelson, Jochen Hoenicke, Michael Möller.
Maintainers: Jochen Hoenicke.

Copyright © 1995–96 Jim Nelson.
Copyright © 2001–2014 Jochen Hoenicke.
Permission to reproduce and distribute this hypertext document granted according to terms described in the License section.

last updated Sat May 16, 2015