Subject: Patch #6 for faces v1.5.

From: richb@stard (Rich Burridge)
Date: Wed, 11 Sep 1991 12:04:32 +1000

This is patch #6 for v1.5 of faces. It consists of a set of diffs to apply
to the faces source, plus three new files. See the installation instructions
below on how to apply this patch.

--------

I've been unable to put a copy of the latest faces.tar.Z and
faces.patch6.shar.Z in pub/faces/incoming on iuvax.cs.indiana.edu because
iuvax.cs.indiana.edu is refusing connections. Steve, is this just a temporary
thing due to load or number of existing connections?

This and previous patches are also available from the automatic mail archive
server using the usually method.

For Sun internal people, you can get a copy of the latest faces.tar.Z via
anon ftp from stard.aus

---------

Changes made in this patch:

v1.5 - patchlevel 6 - 11th September 1991.

       - Added a new subdirectory to the faces distribution called xface.
         There are three files in this directory (xface.c, xface.h and
         xface_data.h). These files should be all you need to get X-Face:
         support added to a graphical mailtool. There are two hooks into
         the mailtool; one to create the glyph for the X-Face: the other to
         check the current mail message an either uncompress the X-Face: and
         display the image, or clear the glyph area. The hooks are for one
         specific case of mailtool integration; from the comments it should
         be possible to determine what is needed in each individual case.

         Note that the copyright message for these three files is different
         to the copyright message for the rest of the faces distribution. It
         should allow easy inclusion into commercial packages.

         The MANIFEST, FILES, TODO and Makefile.dist files have been updated.
 
--------

How to install this patch.

Change directory, to where the faces source files are. Unpack the shar file
included below. This should create a new directory (xface), with three files
in it, plus unpack a set of diffs to apply to the faces sources.

You should use Larry Wall's patch program to apply these diffs. Assuming the
patch file is called faces.patch6, then you should do the following:

cd faces_src                 # directory where your faces source files are.
patch <faces.patch6
make x11                     # Or xview, sunview or news.
make install                 # You might have to be super-user.
          
------CUT HERE------faces.patch6.shar------CUT HERE------
#! /bin/sh
# this is a shell archive, meaning:
# 1. Remove everything above the #! /bin/sh line
# 2. Save the resulting text in a file.
# 3. Execute the file with /bin/sh to create the files:
#	faces.patch6
#	xface (directory)
# This archive created: Wed Sep 11 11:48:46 EST 1991
#
#
export PATH; PATH=/bin:$PATH
#
if [ -f faces.patch6 ]
then
echo shar: will not over-write existing file faces.patch6
else
echo shar: extracting 'faces.patch6',     5085 characters
cat > faces.patch6 <<'Funky_Stuff'

------- patchlevel.h -------
Prereq: 5
*** /tmp/da15446	Wed Sep 11 11:37:54 1991
--- patchlevel.h	Wed Sep 11 10:26:47 1991
***************
*** 14,17 ****
   *  reported to me then an attempt will be made to fix them.
   */
  
! #define  PATCHLEVEL  5
--- 14,17 ----
   *  reported to me then an attempt will be made to fix them.
   */
  
! #define  PATCHLEVEL  6

------- MANIFEST -------
*** /tmp/da15459	Wed Sep 11 11:38:42 1991
--- MANIFEST	Wed Sep 11 11:05:21 1991
***************
*** 93,96 ****
--- 93,99 ----
  scripts/rotary.faces                   |   14
  sunview.c                              |    3
  x11.c                                  |    4
+ xface/xface.c                          |   15
+ xface/xface.h                          |   15
+ xface/xface_data.h                     |   15
  xview.c                                |    5

------- TODO -------
*** /tmp/da15462	Wed Sep 11 11:38:43 1991
--- TODO	Wed Sep 11 11:33:24 1991
***************
*** 321,331 ****
      would  be nice to have an option specifying that every user should
      only be shown once (perhaps with the number of logins).
  
- *   From Stephen Gildea <[email-masked]>
-     There doesn't seem to be a way to just display a compressed faces
-     image.  No mailfile hacking, no address lookup, just interpret and
-     display a face I provide.
- 
  *   From Daniel Glazman <[email-masked]>
      There is currently a byte-order assumption in the way that Sun icon, and
      Blit ikon files are read.
--- 321,326 ----
***************
*** 352,356 ****
--- 347,354 ----
        user-name does not fill the entire icon-bits the workspace color is
        showing through.  This did not happen in OW2.0.  Not a big deal just
        thought I might let you know.
+ 
+ *   Integrate the compface and xface directories into one set of sources that
+     do both jobs.
  
  *   Optimise.

------- FILES -------
*** /tmp/da15465	Wed Sep 11 11:38:44 1991
--- FILES	Wed Sep 11 11:10:49 1991
***************
*** 63,68 ****
--- 63,76 ----
  compface/data.h 

+ Sub-directory xface: files for including X-Face: support into other programs.
+ -----------------------------------------------------------------------------
+ 
+ xface/xface.c          - xface uncompression source plus program hooks.
+ xface/xface.h          - xface include files (definitions)
+ xface/xface_data.h     -                     (initialised data).
+ 
+ 
  Sub-directory facedir: sample face database and alias files.
  ------------------------------------------------------------

------- Makefile.dist -------
*** /tmp/da15468	Wed Sep 11 11:38:45 1991
--- Makefile.dist	Wed Sep 11 11:25:16 1991
***************
*** 305,310 ****
--- 305,311 ----
  OTHERS		= CHANGES CHANGES-v1.4 README TODO MANIFEST FILES \
  		  faces.man.text faces.man face_update.1 faces_cps.cps \
  		  Faces.ad Makefile.dist face_update
+ XFACE		= xface
  
  SFILES1		= mon.c rec.c
  SFILES2		= main.c parsefrom.c
***************
*** 321,327 ****
  SFILES12	= $(COMPFACE)
  SFILES13	= $(FILTERS)
  SFILES14	= $(SCRIPTS)
! SFILES15	= address.y
  
  NEWSLIBS	= $(NEWSLIBDIR) -lcps
  SVIEWLIBS	= -lsuntool -lsunwindow -lpixrect
--- 322,328 ----
  SFILES12	= $(COMPFACE)
  SFILES13	= $(FILTERS)
  SFILES14	= $(SCRIPTS)
! SFILES15	= address.y $(XFACE)
  
  NEWSLIBS	= $(NEWSLIBDIR) -lcps
  SVIEWLIBS	= -lsuntool -lsunwindow -lpixrect

------- CHANGES -------
*** /tmp/da15471	Wed Sep 11 11:38:46 1991
--- CHANGES	Wed Sep 11 11:02:29 1991
***************
*** 15,21 ****
  Faces change history.
  =====================
  
! v1.5 - patchlevel 5 - 5th September 1991.
  
         - Performance improvement. If the host/user file found, is a regular
           file, then a check is made on that file for all valid supported
--- 15,39 ----
  Faces change history.
  =====================
  
! v1.5 - patchlevel 6 - 11th September 1991.
! 
!        - Added a new subdirectory to the faces distribution called xface.
!          There are three files in this directory (xface.c, xface.h and
!          xface_data.h). These files should be all you need to get X-Face:
!          support added to a graphical mailtool. There are two hooks into
!          the mailtool; one to create the glyph for the X-Face: the other to
!          check the current mail message an either uncompress the X-Face: and
!          display the image, or clear the glyph area. The hooks are for one
!          specific case of mailtool integration; from the comments it should
!          be possible to determine what is needed in each individual case.
! 
!          Note that the copyright message for these three files is different
!          to the copyright message for the rest of the faces distribution. It
!          should allow easy inclusion into commercial packages.
! 
!          The MANIFEST, FILES, TODO and Makefile.dist files have been updated.
! 
!  v1.5 - patchlevel 5 - 5th September 1991.
  
         - Performance improvement. If the host/user file found, is a regular
           file, then a check is made on that file for all valid supported
Funky_Stuff
len=`wc -c < faces.patch6`
if [ $len !=     5085 ] ; then
echo error: faces.patch6 was $len bytes long, should have been     5085
fi
fi # end of overwriting check
if [ -f xface ]
then
echo shar: can not write a directory over file xface
else
if [ ! -d xface ]
then
echo shar: creating directory xface
mkdir xface
fi
echo shar: entering directory xface
cd xface
if [ -f xface.c ]
then
echo shar: will not over-write existing file xface.c
else
echo shar: extracting 'xface.c',     8434 characters
cat > xface.c <<'Funky_Stuff'
#ident	"@(#)xface.c 1.1 91/09/05"

/*
 *  UnCompface - 48x48x1 image decompression
 *
 *  Copyright (c) James Ashton - Sydney University - June 1990.
 *
 *  Written 11th November 1989.
 *
 *  Permission to use, copy, modify, and distribute this software and its
 *  documentation for any purpose and without fee is hereby granted, provided
 *  that the above copyright notice appear in all copies and that both that
 *  copyright notice and this permission notice appear in supporting
 *  documentation.  This software is provided "as is" without express or
 *  implied warranty.
 */

#include <stdio.h>
#include <sys/types.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>

#include "xface.h"

static char empty_bits[(WIDTH/8) * HEIGHT];
static int screen;

static GC xface_gc;
static Drawable xface_xid;
static Display *dpy;

/*
 * The following two routines are the hooks into the mail tool program.
 * They will need to be adjusted appropriately for each individual mail tool.
 *
 * mt_create_xface() will return an XView panel message item with a glyph
 * label. This is where the X-Face: image will be displayed. A handle to
 * that image is saved.
 *
 * mt_display_xface() passes in a buffer containing a copy of the processed
 * X-Face: header lines, or a NULL character in the first character position
 * if there is no X-Face: header for this mail message. If there is an
 * X-Face, then it is passed to uncompface, and the input buffer is over-
 * written with the data representation of the X-Face: image. An XImage is
 * created using this data, and the image ropped into the drawable associated
 * with the panel message item.
 */

Panel_item
mt_create_xface(panel, x, y)
	Panel			panel;
	int			x, y;
{
	unsigned long gc_mask;
	struct panel_item_data *p;
	Panel_item item;
	Server_image sv;
	XGCValues gc_val;

	(void) memset(empty_bits, 0, (WIDTH/8) * HEIGHT);
	p = (struct panel_item_data *)
		calloc(1, sizeof(struct panel_item_data));
	sv = xv_create(XV_NULL, SERVER_IMAGE,
		SERVER_IMAGE_DEPTH, 1,
		SERVER_IMAGE_X_BITS, empty_bits,
		XV_WIDTH, WIDTH,
		XV_HEIGHT, HEIGHT,
		0);
        item = xv_create(panel, PANEL_MESSAGE,
		XV_X, x,
		XV_Y, y,
		PANEL_CLIENT_DATA, p,
		PANEL_LABEL_IMAGE, sv,
		PANEL_LABEL_BOLD, TRUE,
		0);

	sv = (Server_image) xv_get(item, PANEL_LABEL_IMAGE);
	xface_xid = (Drawable) xv_get(sv, XV_XID);
	dpy = (Display *) xv_get(sv, XV_DISPLAY);
	screen = DefaultScreen(dpy);

	gc_mask = GCForeground | GCBackground | GCGraphicsExposures;
	gc_val.foreground = 1;
	gc_val.background = 0;
	gc_val.graphics_exposures = False;
	xface_gc = XCreateGC(dpy, xface_xid, gc_mask, &gc_val);
	return(item);
}

void
mt_display_xface(mt_info)
	char		*msg;
{
	int i;
	int no_xface = 1;
	XImage *image;

	if (*mt_info) {
		mt_info[strlen(mt_info)-1] = '\0';
		if (uncompface(mt_info) >= 0) no_xface = 0;
	}
	image = XCreateImage(dpy, DefaultVisual(dpy, screen),
			1, XYPixmap, 0,
			(no_xface) ? empty_bits : mt_info,
			WIDTH, HEIGHT, 8, 0);
	XPutImage(dpy, xface_xid, xface_gc, image,
		  0, 0, 0, 0, WIDTH, HEIGHT);
	XDestroyImage(image);
	(void) xv_set(mt_xface_item, XV_SHOW, TRUE, 0);
}

static int
uncompface(fbuf)
char *fbuf;
{
	if (!(status = setjmp(comp_env))) {
		UnCompAll(fbuf);
		UnGenFace();
		WriteFace(fbuf);
	}
	return(status);
}

static void
PopGreys(f, wid, hei)
char *f;
int wid, hei;
{
	if (wid > 3) {
		wid /= 2;
		hei /= 2;
		PopGreys(f, wid, hei);
		PopGreys(f + wid, wid, hei);
		PopGreys(f + WIDTH * hei, wid, hei);
		PopGreys(f + WIDTH * hei + wid, wid, hei);
	}
	else {
		wid = BigPop(freqs);
		if (wid & 1)
			*f = 1;
		if (wid & 2)
			*(f + 1) = 1;
		if (wid & 4)
			*(f + WIDTH) = 1;
		if (wid & 8)
			*(f + WIDTH + 1) = 1;
	}
}

static void
UnCompress(f, wid, hei, lev)
register char *f;
register int wid, hei, lev;
{
	switch (BigPop(&levels[lev][0])) {
		case WHITE :
			return;
		case BLACK :
			PopGreys(f, wid, hei);
			return;
		default :
			wid /= 2;
			hei /= 2;
			lev++;
			UnCompress(f, wid, hei, lev);
			UnCompress(f + wid, wid, hei, lev);
			UnCompress(f + hei * WIDTH, wid, hei, lev);
			UnCompress(f + wid + hei * WIDTH, wid, hei, lev);
			return;
	}
}

static void
UnCompAll(fbuf)
char *fbuf;
{
	register char *p;

	BigClear();
	BigRead(fbuf);
	p = F;
	while (p < F + PIXELS)
		*(p++) = 0;
	UnCompress(F, 16, 16, 0);
	UnCompress(F + 16, 16, 16, 0);
	UnCompress(F + 32, 16, 16, 0);
	UnCompress(F + WIDTH * 16, 16, 16, 0);
	UnCompress(F + WIDTH * 16 + 16, 16, 16, 0);
	UnCompress(F + WIDTH * 16 + 32, 16, 16, 0);
	UnCompress(F + WIDTH * 32, 16, 16, 0);
	UnCompress(F + WIDTH * 32 + 16, 16, 16, 0);
	UnCompress(F + WIDTH * 32 + 32, 16, 16, 0);
}

static void
Gen(f)
register char *f;
{
	register int m, l, k, j, i, h;

	for (j = 0; j < HEIGHT;  j++) {
		for (i = 0; i < WIDTH;  i++) {
			h = i + j * WIDTH;
			k = 0;
			for (l = i - 2; l <= i + 2; l++)
				for (m = j - 2; m <= j; m++) {
					if ((l >= i) && (m == j))
					    continue;
					if ((l > 0) && (l <= WIDTH) && (m > 0))
					    k = *(f+l+m*WIDTH) ? k*2+1 : k*2;
				}
			switch (i) {
				case 1 :
					switch (j) {
						case 1 : GEN(g_22);
						case 2 : GEN(g_21);
						default : GEN(g_20);
					}
					break;
				case 2 :
					switch (j) {
						case 1 : GEN(g_12);
						case 2 : GEN(g_11);
						default : GEN(g_10);
					}
					break;
				case WIDTH - 1 :
					switch (j) {
						case 1 : GEN(g_42);
						case 2 : GEN(g_41);
						default : GEN(g_40);
					}
					break;
				case WIDTH :
					switch (j) {
						case 1 : GEN(g_32);
						case 2 : GEN(g_31);
						default : GEN(g_30);
					}
					break;
				default :
					switch (j) {
						case 1 : GEN(g_02);
						case 2 : GEN(g_01);
						default : GEN(g_00);
					}
					break;
			}
		}
	}
}

static void
UnGenFace()
{
	Gen(F);
}

static void
BigRead(fbuf)
register char *fbuf;
{
	register int c;

	while (*fbuf != '\0') {
		c = *(fbuf++);
		if ((c < FIRSTPRINT) || (c > LASTPRINT))
			continue;
		BigMul(NUMPRINTS);
		BigAdd((WORD)(c - FIRSTPRINT));
	}
}

static void
WriteFace(fbuf)
char *fbuf;
{
	register char *s, *t;
	register int i, bits;

	s = F;
	t = fbuf;
	bits = i = 0;
	while (s < F + PIXELS) {
		if (*(s++))
			i = i * 2 + 1;
		else
			i *= 2;
		if (++bits == BITSPERBYTE) {
			*(t++) = i;
			bits = i = 0;
		}
	}
}

static int
BigPop(p)
register Prob *p; 
{
	static WORD tmp;
	register int i;

	BigDiv(0, &tmp);
	i = 0;
	while ((tmp < p->p_offset) || (tmp >= p->p_range + p->p_offset)) {
		p++;
		i++;
	}
	BigMul(p->p_range);
	BigAdd(tmp - p->p_offset);
	return i;
}

/*
 * Divide B by a storing the result in B and the remainder in the word
 * pointer to by r
 */

static void
BigDiv(a, r)
register WORD a, *r;
{
	register int i;
	register WORD *w;
	register COMP c, d;

	a &= WORDMASK;
	if ((a == 1) || (B.b_words == 0)) {
		*r = 0;
		return;
	}
	if (a == 0) {		/* treat this as a == WORDCARRY */
				/* and just shift everything right a WORD */
		i = --B.b_words;
		w = B.b_word;
		*r = *w;
		while (i--) {
			*w = *(w + 1);
			w++;
		}
		*w = 0;
		return;
	}
	w = B.b_word + (i = B.b_words);
	c = 0;
	while (i--) {
		c <<= BITSPERWORD;
		c += (COMP)*--w;
		d = c / (COMP)a;
		c = c % (COMP)a;
		*w = (WORD)(d & WORDMASK);
	}
	*r = c;
	if (B.b_word[B.b_words - 1] == 0)
		B.b_words--;
}

/*
 * Multiply a by B storing the result in B
 */

static void
BigMul(a)
register WORD a;
{
	register int i;
	register WORD *w;
	register COMP c;

	a &= WORDMASK;
	if ((a == 1) || (B.b_words == 0))
		return;
	if (a == 0) {		/* treat this as a == WORDCARRY */
				/* and just shift everything left a WORD */
		if ((i = B.b_words++) >= MAXWORDS - 1)
			longjmp(comp_env, ERR_INTERNAL);
		w = B.b_word + i;
		while (i--) {
			*w = *(w - 1);
			w--;
		}
		*w = 0;
		return;
	}
	i = B.b_words;
	w = B.b_word;
	c = 0;
	while (i--) {
		c += (COMP)*w * (COMP)a;
		*(w++) = (WORD)(c & WORDMASK);
		c >>= BITSPERWORD;
	}
	if (c) {
		if (B.b_words++ >= MAXWORDS)
			longjmp(comp_env, ERR_INTERNAL);
		*w = (COMP)(c & WORDMASK);
	}
}

/*
 * Add to a to B storing the result in B
 */

static void
BigAdd(a)
WORD a;
{
	register int i;
	register WORD *w;
	register COMP c;

	a &= WORDMASK;
	if (a == 0)
		return;
	i = 0;
	w = B.b_word;
	c = a;
	while ((i < B.b_words) && c) {
		c += (COMP)*w;
		*w++ = (WORD)(c & WORDMASK);
		c >>= BITSPERWORD;
		i++;
	}
	if ((i == B.b_words) && c) {
		if (B.b_words++ >= MAXWORDS)
			longjmp(comp_env, ERR_INTERNAL);
		*w = (COMP)(c & WORDMASK);
	}
}

static void
BigClear()
{
	B.b_words = 0;
}
Funky_Stuff
len=`wc -c < xface.c`
if [ $len !=     8434 ] ; then
echo error: xface.c was $len bytes long, should have been     8434
fi
fi # end of overwriting check
if [ -f xface.h ]
then
echo shar: will not over-write existing file xface.h
else
echo shar: extracting 'xface.h',     4978 characters
cat > xface.h <<'Funky_Stuff'
#ident  "@(#)xface.h 1.1 91/09/05"

/*
 *  UnCompface - 48x48x1 image decompression
 *
 *  Copyright (c) James Ashton - Sydney University - June 1990.
 *
 *  Written 11th November 1989.
 *
 *  Permission to use, copy, modify, and distribute this software and its
 *  documentation for any purpose and without fee is hereby granted, provided
 *  that the above copyright notice appear in all copies and that both that
 *  copyright notice and this permission notice appear in supporting
 *  documentation.  This software is provided "as is" without express or
 *  implied warranty.
 */

#include <string.h>
#include <fcntl.h>
#include <setjmp.h>

/* For all function declarations, if ANSI then use a prototype. */

#if  defined(__STDC__)
#define P(args)  args
#else  /* ! __STDC__ */
#define P(args)  ()
#endif  /* STDC */

/* need to know how many bits per hexadecimal digit for io */
#define BITSPERDIG 4
#define BITSPERBYTE 8
char HexDigits[] = "0123456789ABCDEF";

/* define the face size - 48x48x1 */
#define WIDTH 48
#define HEIGHT WIDTH

/* total number of pixels and digits */
#define PIXELS (WIDTH * HEIGHT)
#define DIGITS (PIXELS / BITSPERDIG)

/* internal face representation - 1 char per pixel is faster */
char F[PIXELS];

/* output formatting word lengths and line lengths */
#define DIGSPERWORD 4
#define WORDSPERLINE (WIDTH / DIGSPERWORD / BITSPERDIG)

/* compressed output uses the full range of printable characters.
 * in ascii these are in a contiguous block so we just need to know
 * the first and last.  The total number of printables is needed too */
#define FIRSTPRINT '!'
#define LASTPRINT '~'
#define NUMPRINTS (LASTPRINT - FIRSTPRINT + 1)

/* output line length for compressed data */
#define MAXLINELEN 78

/* Portable, very large unsigned integer arithmetic is needed.
 * Implementation uses arrays of WORDs.  COMPs must have at least
 * twice as many bits as WORDs to handle intermediate results */
#define WORD unsigned char
#define COMP unsigned long
#define BITSPERWORD 8
#define WORDCARRY (1 << BITSPERWORD)
#define WORDMASK (WORDCARRY - 1)
#define MAXWORDS ((PIXELS * 2 + BITSPERWORD - 1) / BITSPERWORD)

typedef struct bigint
{
	int b_words;
	WORD b_word[MAXWORDS];
} BigInt;

BigInt B;

/* This is the guess the next pixel table.  Normally there are 12 neighbour
 * pixels used to give 1<<12 cases but in the upper left corner lesser
 * numbers of neighbours are available, leading to 6231 different guesses */
typedef struct guesses
{
	char g_00[1<<12];
	char g_01[1<<7];
	char g_02[1<<2];
	char g_10[1<<9];
	char g_20[1<<6];
	char g_30[1<<8];
	char g_40[1<<10];
	char g_11[1<<5];
	char g_21[1<<3];
	char g_31[1<<5];
	char g_41[1<<6];
	char g_12[1<<1];
	char g_22[1<<0];
	char g_32[1<<2];
	char g_42[1<<2];
} Guesses;

/* data.h was established by sampling over 1000 faces and icons */
Guesses G =
#include "xface_data.h"
;

/* Data of varying probabilities are encoded by a value in the range 0 - 255.
 * The probability of the data determines the range of possible encodings.
 * Offset gives the first possible encoding of the range */
typedef struct prob
{
	WORD p_range;
	WORD p_offset;
} Prob;

/* A stack of probability values */
Prob *ProbBuf[PIXELS * 2];
int NumProbs = 0;

/* Each face is encoded using 9 octrees of 16x16 each.  Each level of the
 * trees has varying probabilities of being white, grey or black.
 * The table below is based on sampling many faces */

#define BLACK 0
#define GREY 1
#define WHITE 2

Prob levels[4][3] = {
	{{1, 255},	{251, 0},	{4, 251}},	/* Top of tree almost always grey */
	{{1, 255},	{200, 0},	{55, 200}},
	{{33, 223},	{159, 0},	{64, 159}},
	{{131, 0},	{0, 0}, 	{125, 131}}	/* Grey disallowed at bottom */
} ;

/* At the bottom of the octree 2x2 elements are considered black if any
 * pixel is black.  The probabilities below give the distribution of the
 * 16 possible 2x2 patterns.  All white is not really a possibility and
 * has a probability range of zero.  Again, experimentally derived data */
Prob freqs[16] = {
	{0, 0}, 	{38, 0},	{38, 38},	{13, 152},
	{38, 76},	{13, 165},	{13, 178},	{6, 230},
	{38, 114},	{13, 191},	{13, 204},	{6, 236},
	{13, 217},	{6, 242},	{5, 248},	{3, 253}
} ;

#define ERR_OK		0	/* successful completion */
#define ERR_EXCESS	1	/* completed OK but some input was ignored */
#define ERR_INSUFF	-1	/* insufficient input.  Bad face format? */
#define ERR_INTERNAL	-2	/* Arithmetic overflow or buffer overflow */

#define GEN(g) F[h] ^= G.g[k]; break

int status;

jmp_buf comp_env;

int BigPop P((Prob *)) ;
int uncompface P((char *)) ;

static void BigAdd P((unsigned int)) ;
static void BigClear P(()) ;
static void BigDiv P((unsigned int, unsigned char *)) ;
static void BigMul P((unsigned int)) ;
static void BigRead P((char *)) ;
static void Gen P((char *)) ;
static void PopGreys P((char *, int, int)) ;
static void UnCompAll P((char *)) ;
static void UnCompress P((char *, int, int, int)) ;
static void UnGenFace P(()) ;
static void WriteFace P((char *)) ;
Funky_Stuff
len=`wc -c < xface.h`
if [ $len !=     4978 ] ; then
echo error: xface.h was $len bytes long, should have been     4978
fi
fi # end of overwriting check
if [ -f xface_data.h ]
then
echo shar: will not over-write existing file xface_data.h
else
echo shar: extracting 'xface_data.h',    20324 characters
cat > xface_data.h <<'Funky_Stuff'
#ident  "@(#)xface_data.h 1.1 91/09/05"

/*
 *  Compface - 48x48x1 image compression and decompression
 *
 *  Copyright (c) James Ashton - Sydney University - June 1990.
 *
 *  Written 11th November 1989.
 *
 *  Permission to use, copy, modify, and distribute this software and its
 *  documentation for any purpose and without fee is hereby granted, provided
 *  that the above copyright notice appear in all copies and that both that
 *  copyright notice and this permission notice appear in supporting
 *  documentation.  This software is provided "as is" without express or
 *  implied warranty.
 */

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		0, 0, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1,
		1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1,
		1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
		0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 1, 0, 0, 1,
		0, 1, 0, 0, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1,
		0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1,
		1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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		0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
		1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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		1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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		0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
		1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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		1, 0, 0, 0, 1, 1, 1, 1, 0, 1, 0, 0, 1, 1, 1, 1,
		0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
		1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
		0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1,
		1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
		0, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1,
		1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
		0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 0,
		1, 0, 0, 1, 1, 1, 0, 1, 0, 0, 0, 0, 1, 1, 1, 1,
		0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
		1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
	},
	{
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		0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1,
		0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1,
		1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1,
		0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 1,
		1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 1,
		0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
		1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
	},
	{
		0, 1, 0, 1, 
	},
	{
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		1, 1, 1, 1, 0, 0, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 
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		1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 
		0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 
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		1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 
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		0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 
		0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 
		1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 
	},
	{
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		0, 1, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 1, 0, 
		1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 
	},
	{
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		0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 
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	{
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		0, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 
		0, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 
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		0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 
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		0, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 
		0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 
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		0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 
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		0, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 
		0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 
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		0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1, 
		0, 0, 0, 0, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 
		0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 
		0, 0, 0, 0, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 
		0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 
		0, 1, 0, 0, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 
		0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 
	},
	{
		0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 1, 
		0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 
	},
	{
		0, 0, 0, 1, 0, 1, 1, 1, 
	},
	{
		0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 
		0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 
	},
	{
		0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 
		0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 1, 
		0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1, 
		0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 
	},
	{
		0, 1, 
	},
	{
		0, 
	},
	{
		0, 0, 0, 1, 
	},
	{
		0, 0, 0, 1, 
	}
}
Funky_Stuff
len=`wc -c < xface_data.h`
if [ $len !=    20324 ] ; then
echo error: xface_data.h was $len bytes long, should have been    20324
fi
fi # end of overwriting check
cd ..
echo shar: done with directory xface
fi