Flatten all tags of the dist tree of less.

1 files changed, 0 insertions, 346 deletions

diff --git a/contrib/less/ifile.c b/contrib/less/ifile.c
deleted file mode 100644
index 96e8e60..0000000
--- a/contrib/less/ifile.c
+++ /dev/null
@@ -1,346 +0,0 @@
-/*
- * Copyright (C) 1984-2007  Mark Nudelman
- *
- * You may distribute under the terms of either the GNU General Public
- * License or the Less License, as specified in the README file.
- *
- * For more information about less, or for information on how to 
- * contact the author, see the README file.
- */
-
-
-/*
- * An IFILE represents an input file.
- *
- * It is actually a pointer to an ifile structure,
- * but is opaque outside this module.
- * Ifile structures are kept in a linked list in the order they 
- * appear on the command line.
- * Any new file which does not already appear in the list is
- * inserted after the current file.
- */
-
-#include "less.h"
-
-extern IFILE	curr_ifile;
-
-struct ifile {
-	struct ifile *h_next;		/* Links for command line list */
-	struct ifile *h_prev;
-	char *h_filename;		/* Name of the file */
-	void *h_filestate;		/* File state (used in ch.c) */
-	int h_index;			/* Index within command line list */
-	int h_hold;			/* Hold count */
-	char h_opened;			/* Has this ifile been opened? */
-	struct scrpos h_scrpos;		/* Saved position within the file */
-};
-
-/*
- * Convert an IFILE (external representation)
- * to a struct file (internal representation), and vice versa.
- */
-#define int_ifile(h)	((struct ifile *)(h))
-#define ext_ifile(h)	((IFILE)(h))
-
-/*
- * Anchor for linked list.
- */
-static struct ifile anchor = { &anchor, &anchor, NULL, NULL, 0, 0, '\0',
-				{ NULL_POSITION, 0 } };
-static int ifiles = 0;
-
-	static void
-incr_index(p, incr)
-	register struct ifile *p;
-	int incr;
-{
-	for (;  p != &anchor;  p = p->h_next)
-		p->h_index += incr;
-}
-
-/*
- * Link an ifile into the ifile list.
- */
-	static void
-link_ifile(p, prev)
-	struct ifile *p;
-	struct ifile *prev;
-{
-	/*
-	 * Link into list.
-	 */
-	if (prev == NULL)
-		prev = &anchor;
-	p->h_next = prev->h_next;
-	p->h_prev = prev;
-	prev->h_next->h_prev = p;
-	prev->h_next = p;
-	/*
-	 * Calculate index for the new one,
-	 * and adjust the indexes for subsequent ifiles in the list.
-	 */
-	p->h_index = prev->h_index + 1;
-	incr_index(p->h_next, 1);
-	ifiles++;
-}
-	
-/*
- * Unlink an ifile from the ifile list.
- */
-	static void
-unlink_ifile(p)
-	struct ifile *p;
-{
-	p->h_next->h_prev = p->h_prev;
-	p->h_prev->h_next = p->h_next;
-	incr_index(p->h_next, -1);
-	ifiles--;
-}
-
-/*
- * Allocate a new ifile structure and stick a filename in it.
- * It should go after "prev" in the list
- * (or at the beginning of the list if "prev" is NULL).
- * Return a pointer to the new ifile structure.
- */
-	static struct ifile *
-new_ifile(filename, prev)
-	char *filename;
-	struct ifile *prev;
-{
-	register struct ifile *p;
-
-	/*
-	 * Allocate and initialize structure.
-	 */
-	p = (struct ifile *) ecalloc(1, sizeof(struct ifile));
-	p->h_filename = save(filename);
-	p->h_scrpos.pos = NULL_POSITION;
-	p->h_opened = 0;
-	p->h_hold = 0;
-	p->h_filestate = NULL;
-	link_ifile(p, prev);
-	return (p);
-}
-
-/*
- * Delete an existing ifile structure.
- */
-	public void
-del_ifile(h)
-	IFILE h;
-{
-	register struct ifile *p;
-
-	if (h == NULL_IFILE)
-		return;
-	/*
-	 * If the ifile we're deleting is the currently open ifile,
-	 * move off it.
-	 */
-	unmark(h);
-	if (h == curr_ifile)
-		curr_ifile = getoff_ifile(curr_ifile);
-	p = int_ifile(h);
-	unlink_ifile(p);
-	free(p->h_filename);
-	free(p);
-}
-
-/*
- * Get the ifile after a given one in the list.
- */
-	public IFILE
-next_ifile(h)
-	IFILE h;
-{
-	register struct ifile *p;
-
-	p = (h == NULL_IFILE) ? &anchor : int_ifile(h);
-	if (p->h_next == &anchor)
-		return (NULL_IFILE);
-	return (ext_ifile(p->h_next));
-}
-
-/*
- * Get the ifile before a given one in the list.
- */
-	public IFILE
-prev_ifile(h)
-	IFILE h;
-{
-	register struct ifile *p;
-
-	p = (h == NULL_IFILE) ? &anchor : int_ifile(h);
-	if (p->h_prev == &anchor)
-		return (NULL_IFILE);
-	return (ext_ifile(p->h_prev));
-}
-
-/*
- * Return a different ifile from the given one.
- */
-	public IFILE
-getoff_ifile(ifile)
-	IFILE ifile;
-{
-	IFILE newifile;
-	
-	if ((newifile = prev_ifile(ifile)) != NULL_IFILE)
-		return (newifile);
-	if ((newifile = next_ifile(ifile)) != NULL_IFILE)
-		return (newifile);
-	return (NULL_IFILE);
-}
-
-/*
- * Return the number of ifiles.
- */
-	public int
-nifile()
-{
-	return (ifiles);
-}
-
-/*
- * Find an ifile structure, given a filename.
- */
-	static struct ifile *
-find_ifile(filename)
-	char *filename;
-{
-	register struct ifile *p;
-
-	for (p = anchor.h_next;  p != &anchor;  p = p->h_next)
-		if (strcmp(filename, p->h_filename) == 0)
-			return (p);
-	return (NULL);
-}
-
-/*
- * Get the ifile associated with a filename.
- * If the filename has not been seen before,
- * insert the new ifile after "prev" in the list.
- */
-	public IFILE
-get_ifile(filename, prev)
-	char *filename;
-	IFILE prev;
-{
-	register struct ifile *p;
-
-	if ((p = find_ifile(filename)) == NULL)
-		p = new_ifile(filename, int_ifile(prev));
-	return (ext_ifile(p));
-}
-
-/*
- * Get the filename associated with a ifile.
- */
-	public char *
-get_filename(ifile)
-	IFILE ifile;
-{
-	if (ifile == NULL)
-		return (NULL);
-	return (int_ifile(ifile)->h_filename);
-}
-
-/*
- * Get the index of the file associated with a ifile.
- */
-	public int
-get_index(ifile)
-	IFILE ifile;
-{
-	return (int_ifile(ifile)->h_index); 
-}
-
-/*
- * Save the file position to be associated with a given file.
- */
-	public void
-store_pos(ifile, scrpos)
-	IFILE ifile;
-	struct scrpos *scrpos;
-{
-	int_ifile(ifile)->h_scrpos = *scrpos;
-}
-
-/*
- * Recall the file position associated with a file.
- * If no position has been associated with the file, return NULL_POSITION.
- */
-	public void
-get_pos(ifile, scrpos)
-	IFILE ifile;
-	struct scrpos *scrpos;
-{
-	*scrpos = int_ifile(ifile)->h_scrpos;
-}
-
-/*
- * Mark the ifile as "opened".
- */
-	public void
-set_open(ifile)
-	IFILE ifile;
-{
-	int_ifile(ifile)->h_opened = 1;
-}
-
-/*
- * Return whether the ifile has been opened previously.
- */
-	public int
-opened(ifile)
-	IFILE ifile;
-{
-	return (int_ifile(ifile)->h_opened);
-}
-
-	public void
-hold_ifile(ifile, incr)
-	IFILE ifile;
-	int incr;
-{
-	int_ifile(ifile)->h_hold += incr;
-}
-
-	public int
-held_ifile(ifile)
-	IFILE ifile;
-{
-	return (int_ifile(ifile)->h_hold);
-}
-
-	public void *
-get_filestate(ifile)
-	IFILE ifile;
-{
-	return (int_ifile(ifile)->h_filestate);
-}
-
-	public void
-set_filestate(ifile, filestate)
-	IFILE ifile;
-	void *filestate;
-{
-	int_ifile(ifile)->h_filestate = filestate;
-}
-
-#if 0
-	public void
-if_dump()
-{
-	register struct ifile *p;
-
-	for (p = anchor.h_next;  p != &anchor;  p = p->h_next)
-	{
-		printf("%x: %d. <%s> pos %d,%x\n", 
-			p, p->h_index, p->h_filename, 
-			p->h_scrpos.ln, p->h_scrpos.pos);
-		ch_dump(p->h_filestate);
-	}
-}
-#endif