pictures.c revision f928ce67ef743c33ea27c573c9c7e2d4a4833cbd
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
#pragma ident "%Z%%M% %I% %E% SMI"
/*
*
* PostScript picture inclusion routines. Support for managing in-line pictures
* has been added, and works in combination with the simple picpack pre-processor
* that's supplied with this package. An in-line picture begins with a special
* device control command that looks like,
*
* x X InlinPicture name size
*
* where name is the pathname of the original picture file and size is the number
* of bytes in the picture, which begins immediately on the next line. When dpost
* encounters the InlinePicture device control command inlinepic() is called and
* that routine appends the string name and the integer size to a temporary file
* (fp_pic) and then adds the next size bytes read from the current input file to
* file fp_pic. All in-line pictures are saved in fp_pic and located later using
* the name string and picture file size that separate pictures saved in fp_pic.
*
* When a picture request (ie. an "x X PI" command) is encountered picopen() is
* called and it first looks for the picture file in fp_pic. If it's found there
* the entire picture (ie. size bytes) is copied from fp_pic to a new temp file
* and that temp file is used as the picture file. If there's nothing in fp_pic
* or if the lookup failed the original route is taken.
*
* Support for in-line pictures is an attempt to address requirements, expressed
* by several orginazations, of being able to store a document as a single file
* (usually troff input) that can then be sent through dpost and ultimately to
* a PostScript printer. The mechanism may help some users, but the are obvious
* disadvantages to this approach, and the original mechanism is the recommended
* approach! Perhaps the most important problem is that troff output, with in-line
* pictures included, doesn't fit the device independent language accepted by
* important post-processors (like proff) and that means you won't be able to
* reliably preview a packed file on your 5620 (or whatever).
*
*/
#include <stdio.h>
#include "comments.h" /* PostScript file structuring comments */
#include "gen.h" /* general purpose definitions */
#include "path.h" /* just for TEMPDIR definition */
FILE *fp_pic = NULL; /* in-line pictures go here */
FILE *picopen();
extern int res, hpos, vpos;
extern int picflag;
extern FILE *tf;
static void piccopy(FILE *, FILE *, long);
/*****************************************************************************/
void
picture(char *buf)
/* stuff following 'x X PI' command */
{
int poffset; /* page offset */
int indent; /* indent */
int length; /* line length */
int totrap; /* distance to next trap */
char name[100]; /* picture file and page string */
char hwo[40], *p; /* height, width and offset strings */
char flags[20]; /* miscellaneous stuff */
int page = 1; /* page number pulled from name[] */
double frame[4]; /* height, width, y, and x offsets from hwo[] */
char units; /* scale indicator for frame dimensions */
int whiteout = 0; /* white out the box? */
int outline = 0; /* draw a box around the picture? */
int scaleboth = 0; /* scale both dimensions? */
double adjx = 0.5; /* left-right adjustment */
double adjy = 0.5; /* top-bottom adjustment */
double rot = 0; /* rotation in clockwise degrees */
FILE *fp_in; /* for *name */
int i; /* loop index */
char *strchr();
/*
*
* Called from devcntrl() after an 'x X PI' command is found. The syntax of that
* command is:
*
* x X PI:args
*
* with args separated by colons and given by:
*
* poffset
* indent
* length
* totrap
* file[(page)]
* height[,width[,yoffset[,xoffset]]]
* [flags]
*
* poffset, indent, length, and totrap are given in machine units. height, width,
* and offset refer to the picture frame in inches, unless they're followed by
* the u scale indicator. flags is a string that provides a little bit of control
* over the placement of the picture in the frame. Rotation of the picture, in
* clockwise degrees, is set by the a flag. If it's not followed by an angle
* the current rotation angle is incremented by 90 degrees, otherwise the angle
* is set by the number that immediately follows the a.
*
*/
if ( picflag == OFF ) /* skip it */
return;
endtext();
flags[0] = '\0'; /* just to be safe */
if ( sscanf(buf, "%d:%d:%d:%d:%[^:]:%[^:]:%[^:]", &poffset, &indent,
&length, &totrap, name, hwo, flags) < 6 ) {
error(NON_FATAL, "too few arguments to specify picture");
return;
} /* End if */
if ( sscanf(name, "%*[^(](%d", &page) == 1 ) /* grab the page number */
strtok(name, "("); /* and separate it from the name */
if ( (fp_in = picopen(name)) == NULL ) {
error(NON_FATAL, "can't open picture file %s", name);
return;
} /* End if */
frame[0] = frame[1] = -1; /* default frame height, width */
frame[2] = frame[3] = 0; /* and y and x offsets */
for ( i = 0, p = hwo-1; i < 4 && p != NULL; i++, p = strchr(p, ',') )
if ( sscanf(++p, "%lf%c", &frame[i], &units) == 2 )
if ( units == 'i' || units == ',' || units == '\0' )
frame[i] *= res;
if ( frame[0] <= 0 ) /* check what we got for height */
frame[0] = totrap;
if ( frame[1] <= 0 ) /* and width - check too big?? */
frame[1] = length - indent;
frame[3] += poffset + indent; /* real x offset */
for ( i = 0; flags[i]; i++ )
switch ( flags[i] ) {
case 'c': adjx = adjy = 0.5; break; /* move to the center */
case 'l': adjx = 0; break; /* left */
case 'r': adjx = 1; break; /* right */
case 't': adjy = 1; break; /* top */
case 'b': adjy = 0; break; /* or bottom justify */
case 'o': outline = 1; break; /* outline the picture */
case 'w': whiteout = 1; break; /* white out the box */
case 's': scaleboth = 1; break; /* scale both dimensions */
case 'a': if ( sscanf(&flags[i+1], "%lf", &rot) != 1 )
rot += 90;
} /* End switch */
fprintf(tf, "cleartomark restore\n");
ps_include(fp_in, tf, page, whiteout, outline, scaleboth,
frame[3]+frame[1]/2, -vpos-frame[2]-frame[0]/2, frame[1], frame[0], adjx, adjy, -rot);
fprintf(tf, "save mark\n");
xymove(hpos, vpos);
t_sf();
fclose(fp_in);
} /* End of picture */
/*****************************************************************************/
FILE *
picopen(char *path)
/* picture file pathname */
{
char name[100]; /* pathnames */
long total; /* and sizes - from *fp_pic */
char *tname; /* pathname */
FILE *fp; /* and pointer for the new temp file */
/*
*
* Responsible for finding and opening the next picture file. If we've accumulated
* any in-line pictures fp_pic won't be NULL and we'll look there first. If *path
* is found in *fp_pic we create another temp file, open it for update, unlink it,
* copy in the picture, seek back to the start of the new temp file, and return
* the file pointer to the caller. If fp_pic is NULL or the lookup fails we just
* open file *path and return the resulting file pointer to the caller.
*
*/
if ( fp_pic != NULL ) {
fseek(fp_pic, 0L, 0);
while ( fscanf(fp_pic, "%s %ld\n", name, &total) != EOF ) {
if ( strcmp(path, name) == 0 ) {
if ( (tname = tempnam(TEMPDIR, "dpost")) == NULL )
error(FATAL, "can't generate temp file name");
if ( (fp = fopen(tname, "w+")) == NULL )
error(FATAL, "can't open %s", tname);
unlink(tname);
free(tname);
piccopy(fp_pic, fp, total);
fseek(fp, 0L, 0);
return(fp);
} /* End if */
fseek(fp_pic, total, 1);
} /* End while */
} /* End if */
return(fopen(path, "r"));
} /* End of picopen */
/*****************************************************************************/
void
inlinepic(FILE *fp, char *buf)
/* fp - current input file */
/* buf - whatever followed "x X InlinePicture" */
{
char *tname; /* temp file pathname - for *fp_pic */
char name[100]; /* picture file pathname */
long total; /* and size - both from *buf */
/*
*
* Adds an in-line picture file to the end of temporary file *fp_pic. All pictures
* grabbed from the input file are saved in the same temp file. Each is preceeded
* by a one line header that includes the original picture file pathname and the
* size of the picture in bytes. The in-line picture file is opened for update,
* left open, and unlinked so it disappears when we do.
*
*/
if ( fp_pic == NULL ) {
if ( (tname = tempnam(TEMPDIR, "dpost")) == NULL )
error(FATAL, "can't generate in-line picture file name");
if ( (fp_pic = fopen(tname, "w+")) == NULL )
error(FATAL, "can't open in-line picture file %s", tname);
unlink(tname);
} /* End if */
if ( sscanf(buf, "%s %ld", name, &total) != 2 )
error(FATAL, "in-line picture error");
fseek(fp_pic, 0L, 2);
fprintf(fp_pic, "%s %ld\n", name, total);
getc(fp);
fflush(fp_pic);
piccopy(fp, fp_pic, total);
ungetc('\n', fp);
} /* End of inlinepic */
/*****************************************************************************/
static void
piccopy(FILE *fp_in, FILE *fp_out, long total)
/* fp_in - input */
/* fp_out - and output file pointers */
/* total - number of bytes to be copied */
{
long i; /* loop index */
/*
*
* Copies total bytes from file fp_in to fp_out. Used to append picture files to
* *fp_pic and then copy them to yet another temporary file immediately before
* they're used (in picture()).
*
*/
for ( i = 0; i < total; i++ )
if ( putc(getc(fp_in), fp_out) == EOF )
error(FATAL, "error copying in-line picture file");
fflush(fp_out);
} /* End of piccopy */