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70170e36 | 1 | /* @(#)main.c 1.2 %G% |
e21828bb DS |
2 | * |
3 | * Copyright -C- 1982 Barry S. Roitblat | |
4 | * | |
5 | * | |
6 | * This is the main routine for the gremlin picture editor. | |
7 | */ | |
8 | ||
9 | ||
10 | #include "gremlin.h" | |
11 | #include "grem2.h" | |
12 | #include <signal.h> | |
13 | #include <sgtty.h> | |
14 | #include <sys/types.h> | |
15 | #include <sys/stat.h> | |
16 | ||
17 | /* imports from config.c */ | |
18 | ||
19 | extern char GMapFile[]; | |
20 | ||
21 | /* database imports */ | |
22 | ||
23 | extern ELT *DBInit(), *DBRead(); | |
24 | extern POINT *PTInit(), *PTMakePoint(); | |
25 | ||
26 | /* imports from menu.c */ | |
27 | ||
28 | extern MNInterpretCursor(); | |
29 | extern MNIcon(), MNInitMenu(), MNDisplayMenu(); | |
30 | ||
31 | /* graphics imports */ | |
32 | extern GRInit(), GRClose(); | |
33 | extern GRSetGrid(), GRDisplayGrid(), GRBlankGrid(); | |
34 | extern GRDisableTablet(), GREnableTablet(); | |
35 | extern GRSetMap(), GRsetwmask(); | |
36 | extern artmode; | |
37 | ||
38 | /* imports from undodb.c */ | |
39 | ||
40 | extern UNForget(); | |
41 | extern UNELT *unlist, *unback; | |
42 | ||
43 | /* imports from long.c */ | |
44 | ||
45 | extern char *Editfile; | |
46 | extern CP(), LGCommand(); | |
47 | extern LGQuit(); | |
48 | ||
49 | /* imports from short.c */ | |
50 | ||
51 | extern SHCommand(); | |
52 | extern SHRedis(); | |
53 | extern SHUpdate(); | |
54 | ||
55 | /* other */ | |
56 | ||
57 | extern char *FindAED(); | |
58 | ||
59 | /* Forward references within this file: */ | |
60 | ||
61 | extern OnStop(), OnCommand(); | |
62 | ||
63 | /* Imports from textio.c: */ | |
64 | ||
65 | extern TxInit(), TxRedisplay(), TxClose(), TxPutMsg(), TxMsgOK(); | |
66 | extern TxLine(), TxPutString(); | |
67 | extern char TxGetChar(); | |
68 | extern short inline; | |
69 | extern TxPutString(); | |
70 | extern TXFIELD TAlign, TAdjust, TBrush, TFont, TGravity, TCSize; | |
71 | extern TXFIELD TEdit, TJustmode; | |
72 | ||
73 | ||
74 | /* Library routines: */ | |
75 | ||
76 | extern char *malloc(), *sprintf(), *strcat(), *strcpy(); | |
77 | ||
78 | #ifdef SIGTINT | |
79 | static int lintrup = LINTRUP; /* Constant for local mode bit */ | |
80 | #endif SIGTINT | |
81 | ||
82 | /* Declaration of Globals */ | |
83 | ||
84 | ELT *PICTURE, *cset, arhead; | |
85 | int CBRUSH, CFONT, CSIZE, CJUST, Gridsize, Gridon, Orientation; | |
86 | int Alignment, SEQ, Adjustment, GravityOn, Consume, CHANGED; | |
87 | float PX, PY, Lastx, Lasty; | |
88 | POINT *POINTLIST, *BACKPOINT, MENPOINT[NUSER]; | |
89 | ELT *MEN[NUSER]; | |
90 | char cmdbuf[400]; | |
91 | int SEARCH = TRUE; | |
92 | int jmodes = 16; | |
93 | char *textpos[] = {"bl", "bc", "br", "cl", "cc", "cr", "tl", "tc", "tr", | |
94 | "lb", "cb", "rb", "lc", "rc", "lt", "ct", "rt" }; | |
95 | char *dispmode[] = {"BL", "BR", "CC", "XX", "XX", "XX", "XX", "XX", | |
96 | "XX", "XX", "TL", "TC", "TR", "CL", "CR", "BC" }; | |
97 | int textmode[] = { 0, 15, 1, 13, 2, 14, 10, 11, 12, | |
98 | 0, 15, 1, 13, 14, 10, 11, 12 }; | |
99 | ||
100 | /* symbolic types, brushes, etc. */ | |
101 | ||
102 | char *lines[] = { "broken", "dashed", "dotted", | |
103 | "medium", "narrow", "thick", NULL }; | |
104 | int lnum[] = { 2, 4, 1, 6, 5, 3 }; | |
105 | char types[] = { 'l', 'r', 'c', 'v', 'a', 'u', '\0' }; | |
106 | char *fonts[] = { "Bold", "Italics", "Roman", "Special", | |
107 | "bold", "italics", "roman", "special", NULL }; | |
108 | int fnum[] = { 3, 2, 1, 4, 3, 2, 1, 4 }; | |
109 | ||
110 | error(s) | |
111 | char *s; | |
112 | /* | |
113 | * This routine prints an error message and sets the Consume flag | |
114 | * so that points are not cleared. | |
115 | */ | |
116 | { | |
117 | putchar('\7'); | |
118 | TxPutMsg(s); | |
119 | Consume = FALSE; | |
120 | } | |
121 | ||
70170e36 | 122 | |
e21828bb DS |
123 | main(argc, argv) |
124 | int argc; | |
125 | char *argv[]; | |
126 | { | |
127 | FILE *fp, *POpen(), *fopen(),*grtty, *tablet, *map, *startup; | |
128 | POINT *p1, pos; | |
129 | int x1, y1, x2, y2, i, j; | |
130 | int button, cux, cuy; | |
131 | char colours[768], msg[50], sw, *arg, *file; | |
132 | char *ptr, *display, *type, *getenv(), home[100]; | |
133 | char *path = "."; | |
134 | struct stat buf; | |
135 | ino_t inode; | |
136 | ||
137 | display = FindAED(); | |
138 | if (display == NULL) display = "/dev/null"; | |
139 | Orientation = 1; | |
140 | file = NULL; | |
141 | ||
142 | /* Parse the command line. */ | |
143 | ||
144 | argc -= 1; argv++; /* Skip program name. */ | |
145 | while (argc > 0) | |
146 | { | |
147 | argc -= 1; | |
148 | arg = *argv++; | |
149 | if (arg[0] != '-') file = arg; | |
150 | else | |
151 | { | |
152 | sw = *++arg; | |
153 | switch (sw) | |
154 | { | |
155 | case 'g': | |
156 | if (*++arg == '\0') | |
157 | if (argc-- > 0) arg = *argv++; | |
158 | if (argc < 0) error("usage: gremlin -g <display name>"); | |
159 | display = arg; | |
160 | if (*display != '/') display = strcat("/dev/", arg); | |
161 | break; | |
162 | case 'p': | |
163 | if (*++arg == '\0') | |
164 | if (argc-- > 0) arg = *argv++; | |
165 | if (argc < 0) error("usage: gremlin -g <path>"); | |
166 | path = arg; | |
167 | SEARCH = TRUE; | |
168 | break; | |
169 | case 'h': | |
170 | Orientation = 0; | |
171 | break; | |
172 | case 'v': | |
173 | Orientation = 1; | |
174 | break; | |
175 | default: | |
176 | (void) sprintf(msg, "unknown switch: %c", sw); | |
177 | error(msg); | |
178 | } | |
179 | } | |
180 | } | |
181 | ||
182 | PSetPath(path); | |
183 | map = fopen(GMapFile, "r"); | |
184 | for (i=0; i<768; ++i) /* read in color map */ | |
185 | { | |
186 | (void) fscanf(map,"%o",&j); | |
187 | colours[i] = j&0377; | |
188 | }; | |
189 | ||
190 | /* Open the display, and call all of the initialization routines. | |
191 | * Initialize all of the globals defined in this file. | |
192 | */ | |
193 | type = getenv("TERM"); | |
194 | TxInit(type); | |
195 | ||
196 | /* Ignore quit signals, catch interrupts and stops. */ | |
197 | ||
198 | sigset(SIGINT, SIG_IGN); | |
199 | sigset(SIGTSTP, OnStop); | |
200 | sigset(SIGTTIN, OnStop); | |
201 | sigset(SIGTTOU, OnStop); | |
202 | ||
203 | #ifdef SIGTINT | |
204 | sigset(SIGTINT, OnCommand); | |
205 | sighold(SIGTINT); | |
206 | #endif SIGTINT | |
207 | ||
208 | grtty = fopen(display,"w"); | |
209 | if (grtty == NULL) | |
210 | { | |
211 | error("couldn't open display"); | |
212 | LGQuit(display); | |
213 | }; | |
214 | tablet = fopen(display,"r"); | |
215 | if (tablet == NULL) tablet = fopen("/dev/null", "r"); | |
216 | GRInit(grtty,0); | |
217 | GRSetMap(colours); | |
218 | ||
219 | #ifdef SIGTINT | |
220 | (void) ioctl(fileno(stdin), TIOCLBIS, (char *) &lintrup); | |
221 | #endif SIGTINT | |
222 | ||
223 | TxRedisplay(); /* display text screen */ | |
224 | ||
225 | CBRUSH = 6; | |
226 | CFONT = 1; | |
227 | CSIZE = 1; | |
228 | CJUST = 0; | |
229 | Gridon = FALSE; | |
230 | Adjustment = NOADJ; | |
231 | Alignment = 4; | |
232 | artmode = FALSE; | |
233 | SEQ = 0; | |
234 | GravityOn = FALSE; | |
235 | CHANGED = FALSE; | |
236 | POINTLIST = PTInit(); | |
237 | BACKPOINT = PTInit(); | |
238 | unlist = unback = nullun; | |
239 | p1 = PTInit(); /* initialize arrowhead template */ | |
240 | (void) PTMakePoint(0.0, 0.0, &p1); | |
241 | (void) PTMakePoint(-5.0, 3.0, &p1); | |
242 | (void) PTMakePoint(-3.0, 0.0, &p1); | |
243 | (void) PTMakePoint(-5.0, -3.0, &p1); | |
244 | (void) PTMakePoint(0.0, 0.0, &p1); | |
245 | arhead.type = VECTOR; | |
246 | arhead.ptlist = p1; | |
247 | arhead.brushf = 0; /* brush filled in when used */ | |
248 | arhead.size = 0; | |
249 | arhead.textpt = malloc(1); | |
250 | *(arhead.textpt) = '\0'; | |
251 | ||
252 | PICTURE = DBInit(); /* initialize picture databse */ | |
253 | cset = DBInit(); /* and current set */ | |
254 | for (i=0; i<4; ++i) /* and user symbols */ | |
255 | MEN[i] = DBInit(); | |
256 | Editfile = malloc(100); | |
257 | if (file == NULL) | |
258 | *Editfile = '\0'; | |
259 | else | |
260 | { | |
261 | (void) strcpy(Editfile, file); | |
262 | fp = POpen(Editfile, (char **) NULL, SEARCH); | |
263 | if (fp == NULL) error("(creating new file)"); | |
264 | else PICTURE = DBRead(Editfile,&Orientation, &pos); | |
265 | } | |
266 | unlist = unback = nullun; | |
267 | TxPutString(&TEdit, Editfile); | |
268 | TxPutMsg(" Gremlin - Version 2.3 (1982)"); | |
269 | MNIcon(); | |
270 | MNInitMenu(Orientation); /* Initialize Menu */ | |
271 | SHUpdate(); /* Display menu and picture, if any */ | |
272 | ||
273 | if (Orientation == 0) /* initialize grid */ | |
274 | { | |
275 | x1 = y1 = 0; | |
276 | x2 = 511; | |
277 | y2 = 395; | |
278 | } | |
279 | else | |
280 | { | |
281 | x1 = 116; | |
282 | y1 = 0; | |
283 | x2 = 511; | |
284 | y2 = 483; | |
285 | }; | |
286 | Gridsize = 16; | |
287 | GRSetGrid(x1, y1, x2, y2, Gridsize); | |
288 | ||
289 | /* read start-up file */ | |
290 | /* look in home directory */ | |
291 | sprintf(home,"%s/.gremlinrc",getenv("HOME")); | |
292 | startup = fopen(home, "r"); | |
293 | if (startup != NULL) | |
294 | { | |
295 | fstat(startup, &buf); | |
296 | inode = buf.st_ino; | |
297 | ptr = fgets(cmdbuf, 400, startup); | |
298 | while (ptr != NULL) | |
299 | { | |
300 | for (i=0; (cmdbuf[i] != '\n'); ++i) | |
301 | if (i > 399) break; | |
302 | cmdbuf[i] = '\0'; /* remove trailing carriage return */ | |
303 | if (cmdbuf[0] == ':') LGCommand(&(cmdbuf[1])); | |
304 | else SHCommand(&(cmdbuf[0])); | |
305 | ptr = fgets(cmdbuf, 400, startup); | |
306 | } /* end while */ | |
307 | } /* end if startup */ | |
308 | else inode = 0; | |
309 | ||
310 | /* look in current directory */ | |
311 | startup = fopen(".gremlinrc", "r"); | |
312 | if (startup != NULL) | |
313 | { | |
314 | fstat(startup, &buf); | |
315 | if (buf.st_ino != inode) /* This isn't the same file as above */ | |
316 | { | |
317 | ptr = fgets(cmdbuf, 400, startup); | |
318 | while (ptr != NULL) | |
319 | { | |
320 | for (i=0; (cmdbuf[i] != '\n'); ++i) | |
321 | if (i > 399) break; | |
322 | cmdbuf[i] = '\0'; /* remove trailing carriage return */ | |
323 | if (cmdbuf[0] == ':') LGCommand(&(cmdbuf[1])); | |
324 | else SHCommand(&(cmdbuf[0])); | |
325 | ptr = fgets(cmdbuf, 400, startup); | |
326 | } /* end while */ | |
327 | } /* end if buf */ | |
328 | } /* end if startup */ | |
329 | ||
330 | while ( TRUE ) /* Exits through the 'quit' command */ | |
331 | { | |
332 | Consume = TRUE; | |
333 | UNForget(); | |
334 | ||
335 | #ifdef SIGTINT | |
336 | GREnableTablet(); | |
337 | /* Allow keyboard interrupts while waiting | |
338 | * for cursor input. | |
339 | */ | |
340 | sigrelse(SIGTINT); | |
341 | button = GRGetButton(tablet, &cux, &cuy); | |
342 | /* Ignore keyboard interrupts while processing commands. | |
343 | */ | |
344 | sighold(SIGTINT); | |
345 | GRDisableTablet(); | |
346 | TxMsgOK(); | |
347 | MNInterpretCursor(button, cux, cuy); | |
348 | if (Consume) CP(); | |
349 | #else SIGTINT | |
350 | i = 1 << fileno(stdin); | |
351 | GREnableTablet(); | |
352 | i |= (1 << fileno(tablet)); | |
353 | (void) select(20, &i, 0, 10000000); | |
354 | if (i & (1 << fileno(stdin))) | |
355 | { | |
356 | TxMsgOK(); | |
357 | OnCommand(); | |
358 | } | |
359 | else | |
360 | { | |
361 | if ((button = GRGetButton(tablet, &cux, &cuy)) != -4) | |
362 | { | |
363 | GRDisableTablet(); | |
364 | TxMsgOK(); | |
365 | MNInterpretCursor(button, cux, cuy); | |
366 | if (Consume) CP(); | |
367 | } | |
368 | } | |
369 | #endif SIGTINT | |
370 | ||
371 | } /* end while */ | |
372 | ||
373 | } /* end main */ | |
374 | ||
70170e36 | 375 | |
e21828bb DS |
376 | OnStop(signo) |
377 | int signo; | |
378 | ||
379 | /*----------------------------------------------------------------------------- | |
380 | * This procedure handles stop signals. | |
381 | * | |
382 | * Results: None. | |
383 | * | |
384 | * Side Effects: | |
385 | * The text display is reset, we wait to get restarted, then | |
386 | * redisplay text. | |
387 | *----------------------------------------------------------------------------- | |
388 | */ | |
389 | ||
390 | { | |
391 | TxClose(); | |
392 | sigset(signo, SIG_DFL); | |
393 | (void) kill(0, signo); | |
394 | sigset(signo, OnStop); | |
395 | SHRedis(); | |
396 | } | |
397 | ||
70170e36 | 398 | |
e21828bb DS |
399 | OnCommand() |
400 | ||
401 | /*----------------------------------------------------------------------------- | |
402 | * This routine responds to interrupts from the command terminal and | |
403 | * then processes commands as long as there is input. | |
404 | * | |
405 | * Results: None. | |
406 | * | |
407 | * Side Effects: | |
408 | * Whatever is done by the commands. | |
409 | *----------------------------------------------------------------------------- | |
410 | */ | |
411 | ||
412 | { | |
413 | ||
414 | #ifdef SIGTINT | |
415 | long charcount; | |
416 | #else SIGTINT | |
417 | int i; | |
418 | #endif SIGTINT | |
419 | ||
420 | static char cmd, lastcmd; | |
421 | int repeat; | |
422 | ||
423 | GRDisableTablet(); | |
424 | ||
425 | #ifdef SIGTINT | |
426 | (void) ioctl(fileno(stdin), TIOCLBIC, (char *) &lintrup); | |
427 | #endif SIGTINT | |
428 | ||
429 | ||
430 | while (TRUE) | |
431 | { | |
432 | ||
433 | /* If there is no more input, then reenable the signal and return */ | |
434 | ||
435 | ||
436 | #ifdef SIGTINT | |
437 | (void) ioctl(fileno(stdin), FIONREAD, (char *) &charcount); | |
438 | if (charcount == 0) | |
439 | { | |
440 | GREnableTablet(); | |
441 | (void) ioctl(fileno(stdin), TIOCLBIS, (char *) &lintrup); | |
442 | return; | |
443 | } | |
444 | #else SIGTINT | |
445 | i = 1 << fileno(stdin); | |
446 | if (select(20, &i, 0, 0) <= 0) | |
447 | { | |
448 | GREnableTablet(); | |
449 | return; | |
450 | } | |
451 | #endif SIGTINT | |
452 | ||
453 | ||
454 | /* Read the command and call the long or short command routine */ | |
455 | ||
456 | cmd = TxGetChar(); | |
457 | if (cmd == '.') | |
458 | { | |
459 | repeat = TRUE; | |
460 | cmd = lastcmd; | |
461 | } | |
462 | else | |
463 | { | |
464 | repeat = FALSE; | |
465 | lastcmd = cmd; | |
466 | } | |
467 | if (cmd == ':') | |
468 | { | |
469 | if (!repeat) TxGetLine(":",cmdbuf,400); | |
470 | LGCommand(cmdbuf); | |
471 | } | |
472 | else | |
473 | { | |
474 | TxLine(inline); | |
70170e36 | 475 | if (cmd != '\') putchar(cmd); |
e21828bb DS |
476 | (void) fflush(stdout); |
477 | SHCommand(&cmd); | |
478 | } | |
479 | TxLine(inline); | |
480 | printf(" "); | |
481 | TxLine(inline); | |
482 | if (Consume) CP(); | |
483 | Consume = TRUE; | |
484 | UNForget(); | |
485 | } | |
486 | } | |
487 |