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| - Below is the full text to unixtty.c from the source code of NetHack 2.3e. To link to a particular line, write [[NetHack 2.3e/unixtty.c#line123]], for example. Warning! This is the source code from an old release. For the latest release, see Source code 1. /* SCCS Id: @(#)unixtty.c 2.3 88/03/31 2. /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */ 3. /* tty.c - (Unix) version */ 4. 5. /* With thanks to the people who sent code for SYSV - hpscdi!jon, 6. * arnold@ucsf-cgl, wcs@bo95b, cbcephus!pds and others. 7. */ 8. 9. #include 10. #include "extern.h" 11. #include "hack.h" 12. #include "func_tab.h" 13. 14. extern void savech(); 15. 16. #define ON 1 17. #define OFF 0 18. 19. /* 20. * The distinctions here are not BSD - rest but rather USG - rest, as 21. * BSD still has the old sgttyb structure, but SYSV has termio. Thus: 22. */ 23. #ifdef BSD 24. #define V7 25. #else 26. #define USG 27. #endif 28. 29. /* 30. * Some systems may have getchar() return EOF for various reasons, and 31. * we should not quit before seeing at least NR_OF_EOFS consecutive EOFs. 32. */ 33. #ifndef BSD 34. #define NR_OF_EOFS 20 35. #endif 36. 37. 38. #ifdef USG 39. 40. #include 41. #define termstruct termio 42. #define kill_sym c_cc[VKILL] 43. #define erase_sym c_cc[VERASE] 44. #define EXTABS TAB3 45. #define tabflgs c_oflag 46. #define echoflgs c_lflag 47. #define cbrkflgs c_lflag 48. #define CBRKMASK ICANON 49. #define CBRKON ! /* reverse condition */ 50. #define OSPEED(x) ((x).c_cflag & CBAUD) 51. #define GTTY(x) (ioctl(0, TCGETA, x)) 52. /* STTY now modified to run under Sys V R3. - may have to be #ifdef'ed */ 53. #define STTY(x) (ioctl(0, TCSETAW, x)) /* TCSETAF? TCSETAW? */ 54. 55. #else /* V7 */ 56. 57. #include 58. #define termstruct sgttyb 59. #define kill_sym sg_kill 60. #define erase_sym sg_erase 61. #define EXTABS XTABS 62. #define tabflgs sg_flags 63. #define echoflgs sg_flags 64. #define cbrkflgs sg_flags 65. #define CBRKMASK CBREAK 66. #define CBRKON /* empty */ 67. #define OSPEED(x) (x).sg_ospeed 68. #define GTTY(x) (gtty(0, x)) 69. #define STTY(x) (stty(0, x)) 70. 71. #endif 72. 73. extern short ospeed; 74. static char erase_char, kill_char; 75. static boolean settty_needed = FALSE; 76. struct termstruct inittyb, curttyb; 77. 78. /* 79. * Get initial state of terminal, set ospeed (for termcap routines) 80. * and switch off tab expansion if necessary. 81. * Called by startup() in termcap.c and after returning from ! or ^Z 82. */ 83. gettty(){ 84. if(GTTY(&inittyb) < 0) 85. perror("Hack (gettty)"); 86. curttyb = inittyb; 87. ospeed = OSPEED(inittyb); 88. erase_char = inittyb.erase_sym; 89. kill_char = inittyb.kill_sym; 90. getioctls(); 91. 92. /* do not expand tabs - they might be needed inside a cm sequence */ 93. if(curttyb.tabflgs & EXTABS) { 94. curttyb.tabflgs &= ~EXTABS; 95. setctty(); 96. } 97. settty_needed = TRUE; 98. } 99. 100. /* reset terminal to original state */ 101. settty(s) char *s; { 102. clear_screen(); 103. end_screen(); 104. if(s) printf(s); 105. (void) fflush(stdout); 106. if(STTY(&inittyb) < 0) 107. perror("Hack (settty)"); 108. flags.echo = (inittyb.echoflgs & ECHO) ? ON : OFF; 109. flags.cbreak = (CBRKON(inittyb.cbrkflgs & CBRKMASK)) ? ON : OFF; 110. setioctls(); 111. } 112. 113. setctty(){ 114. if(STTY(&curttyb) < 0) 115. perror("Hack (setctty)"); 116. } 117. 118. 119. setftty(){ 120. register int ef = 0; /* desired value of flags & ECHO */ 121. register int cf = CBRKON(CBRKMASK); /* desired value of flags & CBREAK */ 122. register int change = 0; 123. flags.cbreak = ON; 124. flags.echo = OFF; 125. /* Should use (ECHO|CRMOD) here instead of ECHO */ 126. if((curttyb.echoflgs & ECHO) != ef){ 127. curttyb.echoflgs &= ~ECHO; 128. /* curttyb.echoflgs |= ef; */ 129. change++; 130. } 131. if((curttyb.cbrkflgs & CBRKMASK) != cf){ 132. curttyb.cbrkflgs &= ~CBRKMASK; 133. curttyb.cbrkflgs |= cf; 134. #ifdef USG 135. /* be satisfied with one character; no timeout */ 136. curttyb.c_cc[VMIN] = 1; /* was VEOF */ 137. curttyb.c_cc[VTIME] = 0; /* was VEOL */ 138. #endif 139. change++; 140. } 141. if(change){ 142. setctty(); 143. } 144. start_screen(); 145. } 146. 147. 148. /* fatal error */ 149. /*VARARGS1*/ 150. error(s,x,y) char *s; { 151. if(settty_needed) 152. settty((char *) 0); 153. printf(s,x,y); 154. putchar('
'); 155. exit(1); 156. } 157. 158. /* 159. * Read a line closed with '
' into the array char bufp[BUFSZ]. 160. * (The '
' is not stored. The string is closed with a '\0'.) 161. * Reading can be interrupted by an escape ('\033') - now the 162. * resulting string is "\033". 163. */ 164. getlin(bufp) 165. register char *bufp; 166. { 167. register char *obufp = bufp; 168. register int c; 169. 170. flags.toplin = 2; /* nonempty, no --More-- required */ 171. for(;;) { 172. (void) fflush(stdout); 173. if((c = getchar()) == EOF) { 174. *bufp = 0; 175. return; 176. } 177. if(c == '\033') { 178. *obufp = c; 179. obufp[1] = 0; 180. return; 181. } 182. if(c == erase_char || c == '\b') { 183. if(bufp != obufp) { 184. bufp--; 185. putstr("\b \b"); /* putsym converts \b */ 186. } else bell(); 187. } else if(c == '
') { 188. *bufp = 0; 189. return; 190. } else if(' ' <= c && c < '\177') { 191. /* avoid isprint() - some people don't have it 192. ' ' is not always a printing char */ 193. *bufp = c; 194. bufp[1] = 0; 195. putstr(bufp); 196. if(bufp-obufp < BUFSZ-1 && bufp-obufp < COLNO) 197. bufp++; 198. } else if(c == kill_char || c == '\177') { /* Robert Viduya */ 199. /* this test last - @ might be the kill_char */ 200. while(bufp != obufp) { 201. bufp--; 202. putstr("\b \b"); 203. } 204. } else 205. bell(); 206. } 207. } 208. 209. getret() { 210. cgetret(""); 211. } 212. 213. cgetret(s) 214. register char *s; 215. { 216. putsym('
'); 217. if(flags.standout) 218. standoutbeg(); 219. putstr("Hit "); 220. putstr(flags.cbreak ? "space" : "return"); 221. putstr(" to continue: "); 222. if(flags.standout) 223. standoutend(); 224. xwaitforspace(s); 225. } 226. 227. char morc; /* tell the outside world what char he used */ 228. 229. xwaitforspace(s) 230. register char *s; /* chars allowed besides space or return */ 231. { 232. register int c; 233. 234. morc = 0; 235. 236. while((c = readchar()) != '
') { 237. if(flags.cbreak) { 238. if(c == ' ') break; 239. if(s && index(s,c)) { 240. morc = c; 241. break; 242. } 243. bell(); 244. } 245. } 246. } 247. 248. static int last_multi; 249. 250. char * 251. parse() 252. { 253. static char inline[COLNO]; 254. register foo; 255. 256. multi = 0; 257. flags.move = 1; 258. if(!Invisible) curs_on_u(); else home(); 259. while((foo = readchar()) >= '0' && foo <= '9') { 260. multi = 10*multi+foo-'0'; 261. #ifdef DGKMOD 262. if (multi < 0 || multi > LARGEST_INT) 263. multi = LARGEST_INT; 264. if (multi > 9) { 265. remember_topl(); 266. home(); 267. cl_end(); 268. printf("Count: %d", multi); 269. } 270. #endif 271. last_multi = multi; 272. } 273. # ifdef REDO 274. if (foo == DOAGAIN || in_doagain) 275. multi = last_multi; 276. else { 277. savech(0); /* reset input queue */ 278. savech(foo); 279. } 280. # endif 281. if(multi) { 282. multi--; 283. save_cm = inline; 284. } 285. inline[0] = foo; 286. inline[1] = 0; 287. if(foo == 'g' || foo == 'G'){ 288. inline[1] = getchar(); 289. #ifdef QUEST 290. if(inline[1] == foo) inline[2] = getchar(); else 291. #endif 292. inline[2] = 0; 293. } 294. if(foo == 'm' || foo == 'M'){ 295. inline[1] = getchar(); 296. inline[2] = 0; 297. } 298. clrlin(); 299. return(inline); 300. } 301. 302. char 303. readchar() { 304. register int sym; 305. 306. (void) fflush(stdout); 307. if((sym = getchar()) == EOF) 308. #ifdef NR_OF_EOFS 309. { /* 310. * Some SYSV systems seem to return EOFs for various reasons 311. * (?like when one hits break or for interrupted systemcalls?), 312. * and we must see several before we quit. 313. */ 314. register int cnt = NR_OF_EOFS; 315. while (cnt--) { 316. clearerr(stdin); /* omit if clearerr is undefined */ 317. if((sym = getchar()) != EOF) goto noteof; 318. } 319. end_of_input(); 320. noteof: ; 321. } 322. #else 323. end_of_input(); 324. #endif /* NR_OF_EOFS /**/ 325. if(flags.toplin == 1) 326. flags.toplin = 2; 327. return((char) sym); 328. } 329. 330. end_of_input() 331. { 332. settty("End of input?
"); 333. clearlocks(); 334. exit(0); 335. } 336. 337. #ifdef COM_COMPL 338. /* Read in an extended command - doing command line completion for 339. * when enough character have been entered to make a unique command. 340. * This is just a modified getlin(). -jsb 341. */ 342. get_ext_cmd(bufp) 343. register char *bufp; 344. { 345. register char *obufp = bufp; 346. register int c; 347. int com_index, index; 348. 349. flags.toplin = 2; /* nonempty, no --More-- required */ 350. 351. for(;;) { 352. (void) fflush(stdout); 353. if((c = readchar()) == EOF) { 354. *bufp = 0; 355. return; 356. } 357. if(c == '\033') { 358. *obufp = c; 359. obufp[1] = 0; 360. return; 361. } 362. if(c == erase_char || c == '\b') { 363. if(bufp != obufp) { 364. bufp--; 365. putstr("\b \b"); /* putsym converts \b */ 366. } else bell(); 367. } else if(c == '
') { 368. *bufp = 0; 369. return; 370. } else if(' ' <= c && c < '\177') { 371. /* avoid isprint() - some people don't have it 372. ' ' is not always a printing char */ 373. *bufp = c; 374. bufp[1] = 0; 375. index = 0; 376. com_index = -1; 377. 378. while(extcmdlist[index].ef_txt != (char *) 0){ 379. if(!strncmp(obufp, extcmdlist[index].ef_txt, 380. strlen(obufp))) 381. if(com_index == -1) /* No matches yet*/ 382. com_index = index; 383. else /* More than 1 match */ 384. com_index = -2; 385. index++; 386. } 387. if(com_index >= 0){ 388. strcpy(obufp, 389. extcmdlist[com_index].ef_txt); 390. /* finish print our string */ 391. putstr(bufp); 392. bufp = obufp; /* reset it */ 393. if(strlen(obufp) < BUFSIZ-1 && 394. strlen(obufp) < COLNO) 395. /* set bufp at the end of our 396. * string 397. */ 398. bufp += strlen(obufp); 399. } else { 400. putstr(bufp); 401. if(bufp-obufp < BUFSZ-1 && bufp-obufp < COLNO) 402. bufp++; 403. } 404. } else if(c == kill_char || c == '\177') { /* Robert Viduya */ 405. /* this test last - @ might be the kill_char */ 406. while(bufp != obufp) { 407. bufp--; 408. putstr("\b \b"); 409. } 410. } else 411. bell(); 412. } 413. 414. } 415. #endif COM_COMPL
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