1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
28 /* All Rights Reserved */
29
30
31 #pragma ident "%Z%%M% %I% %E% SMI"
32
33 /*
34 *
35 * PostScript picture inclusion routines. Support for managing in-line pictures
36 * has been added, and works in combination with the simple picpack pre-processor
37 * that's supplied with this package. An in-line picture begins with a special
38 * device control command that looks like,
39 *
40 * x X InlinPicture name size
41 *
42 * where name is the pathname of the original picture file and size is the number
43 * of bytes in the picture, which begins immediately on the next line. When dpost
44 * encounters the InlinePicture device control command inlinepic() is called and
45 * that routine appends the string name and the integer size to a temporary file
46 * (fp_pic) and then adds the next size bytes read from the current input file to
47 * file fp_pic. All in-line pictures are saved in fp_pic and located later using
48 * the name string and picture file size that separate pictures saved in fp_pic.
49 *
50 * When a picture request (ie. an "x X PI" command) is encountered picopen() is
51 * called and it first looks for the picture file in fp_pic. If it's found there
52 * the entire picture (ie. size bytes) is copied from fp_pic to a new temp file
53 * and that temp file is used as the picture file. If there's nothing in fp_pic
54 * or if the lookup failed the original route is taken.
55 *
56 * Support for in-line pictures is an attempt to address requirements, expressed
57 * by several orginazations, of being able to store a document as a single file
58 * (usually troff input) that can then be sent through dpost and ultimately to
59 * a PostScript printer. The mechanism may help some users, but the are obvious
60 * disadvantages to this approach, and the original mechanism is the recommended
61 * approach! Perhaps the most important problem is that troff output, with in-line
62 * pictures included, doesn't fit the device independent language accepted by
63 * important post-processors (like proff) and that means you won't be able to
64 * reliably preview a packed file on your 5620 (or whatever).
65 *
66 */
67
68
69 #include <stdio.h>
70
71 #include "comments.h" /* PostScript file structuring comments */
72 #include "gen.h" /* general purpose definitions */
73 #include "path.h" /* just for TEMPDIR definition */
74
75
76 FILE *fp_pic = NULL; /* in-line pictures go here */
77 FILE *picopen();
78
79 extern int res, hpos, vpos;
80 extern int picflag;
81 extern FILE *tf;
82
83 static void piccopy(FILE *, FILE *, long);
84
85 /*****************************************************************************/
86
87
88 void
picture(char * buf)89 picture(char *buf)
90 /* stuff following 'x X PI' command */
91 {
92 int poffset; /* page offset */
93 int indent; /* indent */
94 int length; /* line length */
95 int totrap; /* distance to next trap */
96 char name[100]; /* picture file and page string */
97 char hwo[40], *p; /* height, width and offset strings */
98 char flags[20]; /* miscellaneous stuff */
99 int page = 1; /* page number pulled from name[] */
100 double frame[4]; /* height, width, y, and x offsets from hwo[] */
101 char units; /* scale indicator for frame dimensions */
102 int whiteout = 0; /* white out the box? */
103 int outline = 0; /* draw a box around the picture? */
104 int scaleboth = 0; /* scale both dimensions? */
105 double adjx = 0.5; /* left-right adjustment */
106 double adjy = 0.5; /* top-bottom adjustment */
107 double rot = 0; /* rotation in clockwise degrees */
108 FILE *fp_in; /* for *name */
109 int i; /* loop index */
110
111 char *strchr();
112
113
114 /*
115 *
116 * Called from devcntrl() after an 'x X PI' command is found. The syntax of that
117 * command is:
118 *
119 * x X PI:args
120 *
121 * with args separated by colons and given by:
122 *
123 * poffset
124 * indent
125 * length
126 * totrap
127 * file[(page)]
128 * height[,width[,yoffset[,xoffset]]]
129 * [flags]
130 *
131 * poffset, indent, length, and totrap are given in machine units. height, width,
132 * and offset refer to the picture frame in inches, unless they're followed by
133 * the u scale indicator. flags is a string that provides a little bit of control
134 * over the placement of the picture in the frame. Rotation of the picture, in
135 * clockwise degrees, is set by the a flag. If it's not followed by an angle
136 * the current rotation angle is incremented by 90 degrees, otherwise the angle
137 * is set by the number that immediately follows the a.
138 *
139 */
140
141
142 if ( picflag == OFF ) /* skip it */
143 return;
144
145 endtext();
146
147 flags[0] = '\0'; /* just to be safe */
148 if ( sscanf(buf, "%d:%d:%d:%d:%[^:]:%[^:]:%[^:]", &poffset, &indent,
149 &length, &totrap, name, hwo, flags) < 6 ) {
150 error(NON_FATAL, "too few arguments to specify picture");
151 return;
152 } /* End if */
153
154 if ( sscanf(name, "%*[^(](%d", &page) == 1 ) /* grab the page number */
155 strtok(name, "("); /* and separate it from the name */
156
157 if ( (fp_in = picopen(name)) == NULL ) {
158 error(NON_FATAL, "can't open picture file %s", name);
159 return;
160 } /* End if */
161
162 frame[0] = frame[1] = -1; /* default frame height, width */
163 frame[2] = frame[3] = 0; /* and y and x offsets */
164
165 for ( i = 0, p = hwo-1; i < 4 && p != NULL; i++, p = strchr(p, ',') )
166 if ( sscanf(++p, "%lf%c", &frame[i], &units) == 2 )
167 if ( units == 'i' || units == ',' || units == '\0' )
168 frame[i] *= res;
169
170 if ( frame[0] <= 0 ) /* check what we got for height */
171 frame[0] = totrap;
172
173 if ( frame[1] <= 0 ) /* and width - check too big?? */
174 frame[1] = length - indent;
175
176 frame[3] += poffset + indent; /* real x offset */
177
178 for ( i = 0; flags[i]; i++ )
179 switch ( flags[i] ) {
180 case 'c': adjx = adjy = 0.5; break; /* move to the center */
181 case 'l': adjx = 0; break; /* left */
182 case 'r': adjx = 1; break; /* right */
183 case 't': adjy = 1; break; /* top */
184 case 'b': adjy = 0; break; /* or bottom justify */
185 case 'o': outline = 1; break; /* outline the picture */
186 case 'w': whiteout = 1; break; /* white out the box */
187 case 's': scaleboth = 1; break; /* scale both dimensions */
188 case 'a': if ( sscanf(&flags[i+1], "%lf", &rot) != 1 )
189 rot += 90;
190 } /* End switch */
191
192 fprintf(tf, "cleartomark restore\n");
193
194 ps_include(fp_in, tf, page, whiteout, outline, scaleboth,
195 frame[3]+frame[1]/2, -vpos-frame[2]-frame[0]/2, frame[1], frame[0], adjx, adjy, -rot);
196
197 fprintf(tf, "save mark\n");
198 xymove(hpos, vpos);
199 t_sf();
200
201 fclose(fp_in);
202
203 } /* End of picture */
204
205
206 /*****************************************************************************/
207
208
209 FILE *
picopen(char * path)210 picopen(char *path)
211 /* picture file pathname */
212 {
213 char name[100]; /* pathnames */
214 long total; /* and sizes - from *fp_pic */
215 char *tname; /* pathname */
216 FILE *fp; /* and pointer for the new temp file */
217
218
219 /*
220 *
221 * Responsible for finding and opening the next picture file. If we've accumulated
222 * any in-line pictures fp_pic won't be NULL and we'll look there first. If *path
223 * is found in *fp_pic we create another temp file, open it for update, unlink it,
224 * copy in the picture, seek back to the start of the new temp file, and return
225 * the file pointer to the caller. If fp_pic is NULL or the lookup fails we just
226 * open file *path and return the resulting file pointer to the caller.
227 *
228 */
229
230
231 if ( fp_pic != NULL ) {
232 fseek(fp_pic, 0L, 0);
233 while ( fscanf(fp_pic, "%s %ld\n", name, &total) != EOF ) {
234 if ( strcmp(path, name) == 0 ) {
235 if ( (tname = tempnam(TEMPDIR, "dpost")) == NULL )
236 error(FATAL, "can't generate temp file name");
237 if ( (fp = fopen(tname, "w+")) == NULL )
238 error(FATAL, "can't open %s", tname);
239 unlink(tname);
240 free(tname);
241 piccopy(fp_pic, fp, total);
242 fseek(fp, 0L, 0);
243 return(fp);
244 } /* End if */
245 fseek(fp_pic, total, 1);
246 } /* End while */
247 } /* End if */
248
249 return(fopen(path, "r"));
250
251 } /* End of picopen */
252
253
254 /*****************************************************************************/
255
256
257 void
inlinepic(FILE * fp,char * buf)258 inlinepic(FILE *fp, char *buf)
259 /* fp - current input file */
260 /* buf - whatever followed "x X InlinePicture" */
261 {
262 char *tname; /* temp file pathname - for *fp_pic */
263 char name[100]; /* picture file pathname */
264 long total; /* and size - both from *buf */
265
266
267 /*
268 *
269 * Adds an in-line picture file to the end of temporary file *fp_pic. All pictures
270 * grabbed from the input file are saved in the same temp file. Each is preceeded
271 * by a one line header that includes the original picture file pathname and the
272 * size of the picture in bytes. The in-line picture file is opened for update,
273 * left open, and unlinked so it disappears when we do.
274 *
275 */
276
277
278 if ( fp_pic == NULL ) {
279 if ( (tname = tempnam(TEMPDIR, "dpost")) == NULL )
280 error(FATAL, "can't generate in-line picture file name");
281 if ( (fp_pic = fopen(tname, "w+")) == NULL )
282 error(FATAL, "can't open in-line picture file %s", tname);
283 unlink(tname);
284 } /* End if */
285
286 if ( sscanf(buf, "%s %ld", name, &total) != 2 )
287 error(FATAL, "in-line picture error");
288
289 fseek(fp_pic, 0L, 2);
290 fprintf(fp_pic, "%s %ld\n", name, total);
291 getc(fp);
292 fflush(fp_pic);
293 piccopy(fp, fp_pic, total);
294 ungetc('\n', fp);
295
296 } /* End of inlinepic */
297
298
299 /*****************************************************************************/
300
301
302 static void
piccopy(FILE * fp_in,FILE * fp_out,long total)303 piccopy(FILE *fp_in, FILE *fp_out, long total)
304 /* fp_in - input */
305 /* fp_out - and output file pointers */
306 /* total - number of bytes to be copied */
307 {
308 long i; /* loop index */
309
310
311 /*
312 *
313 * Copies total bytes from file fp_in to fp_out. Used to append picture files to
314 * *fp_pic and then copy them to yet another temporary file immediately before
315 * they're used (in picture()).
316 *
317 */
318
319
320 for ( i = 0; i < total; i++ )
321 if ( putc(getc(fp_in), fp_out) == EOF )
322 error(FATAL, "error copying in-line picture file");
323 fflush(fp_out);
324
325 } /* End of piccopy */
326