xref.c

HTML-XML-utils由一套小型C程序（过滤器）组成

/*
 * Program to (semi-)automatically link instances of terms and phrases
 * in an HTML file to their definitions.
 *
 * The program collects all <dfn> elements, and stores either their
 * title attribute, or if there is none, their content (without
 * mark-up). Then it looks for occurrences of the same text and makes
 * a link from the occurrence to the corresponding <dfn> element. The
 * occurrences that are checked are the contents of all inline
 * elements, such as <em> and <span>. HTML unfortunately forbids
 * nested links, so the program doesn't look for occurrences inside an
 * <a>.
 *
 * The program can store the <dfn> elements (the terms they define,
 * the file they occur in and their ID) in a file, so that
 * cross-references among several files are possible, by running the
 * program on each of the files. It may be necessary to run the
 * program twice on a series of files, to create all the references.
 *
 * Copyright