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|---|
| 3e03d89e |
1 | /* An ircII-like split-screen front end |
| 2 | Copyright (C) 1995 Roger Espel Llima |
| 3 | |
| 4 | Started: 17 Feb 95 by orabidoo <roger.espel.llima@ens.fr> |
| 5 | Latest modification: 7 June 97 |
| 6 | |
| 7 | To compile: gcc ssfe.c -o ssfe -ltermcap |
| 8 | |
| 9 | If it doesn't work, try gcc ssfe.c -o ssfe -lcurses |
| 10 | or try cc, acc or c89 instead of gcc, or -lncurses. |
| 11 | |
| 12 | Use: ssfe [options] program arguments |
| 13 | |
| 14 | This program is free software; you can redistribute it and/or modify |
| 15 | it under the terms of the GNU General Public License as published by |
| 16 | the Free Software Foundation. See the file LICENSE for details. |
| 17 | */ |
| 18 | |
| 19 | #include <sys/time.h> |
| 20 | #include <sys/types.h> |
| 21 | #include <stdio.h> |
| 22 | #include <stdlib.h> |
| 23 | #include <fcntl.h> |
| 24 | #include <unistd.h> |
| 25 | #include <signal.h> |
| 26 | #include <errno.h> |
| 27 | |
| 28 | #ifdef USE_SGTTY |
| 29 | #include <sgtty.h> |
| 30 | #else |
| 31 | #include <termios.h> |
| 32 | #endif |
| 33 | |
| 34 | #include <sys/ioctl.h> |
| 35 | |
| 36 | #ifdef _AIX |
| 37 | #include <sys/select.h> |
| 38 | #endif |
| 39 | |
| 40 | #define BUF_SIZE 512 |
| 41 | #define MAX_COLS 512 |
| 42 | |
| 43 | unsigned char *statusline; |
| 44 | int ystatus, yinput; /* line number of the status line, input line */ |
| 45 | |
| 46 | int ttyfd; |
| 47 | #ifdef TIOCGWINSZ |
| 48 | struct winsize wsz; |
| 49 | #endif |
| 50 | |
| 51 | #ifdef USE_SGTTY |
| 52 | struct sgttyb term, term0; |
| 53 | struct tchars tch, tch0; |
| 54 | struct ltchars lch, lch0; |
| 55 | #else |
| 56 | struct termios term, term0; |
| 57 | #endif |
| 58 | |
| 59 | int pid, mypid; |
| 60 | int i; |
| 61 | int cols, lines; |
| 62 | int readfd, writefd, errfd; |
| 63 | |
| 64 | unsigned char *t, *w; |
| 65 | unsigned char tmpstr[BUF_SIZE], extrainput[BUF_SIZE+20], readbuf[2*BUF_SIZE], |
| 66 | *input, *writebuf, o_buffer[BUF_SIZE]; |
| 67 | int bold=0, inv=0, under=0, wherex=0, wherey=0, donl=0; |
| 68 | int hold_mode=0, hold_lines=0, ctrlx=0, beep=0, flow=0; |
| 69 | |
| 70 | unsigned char defprompt[]="> ", |
| 71 | nullstring[]="", |
| 72 | *prompt; |
| 73 | int plen=0, specialprompt=0, modified=1, no_echo=0; |
| 74 | |
| 75 | #define MAX_TAB_LINES 20 |
| 76 | struct tabinfo { |
| 77 | unsigned char string[BUF_SIZE]; |
| 78 | struct tabinfo *prev, *next; |
| 79 | }; |
| 80 | int tablines=0; |
| 81 | struct tabinfo *curtabt=NULL, *curtabr=NULL, *oldest=NULL; |
| 82 | |
| 83 | #define MAX_HIST_LINES 50 |
| 84 | struct histinfo { |
| 85 | unsigned char string[BUF_SIZE+20]; |
| 86 | int len, plen; |
| 87 | struct histinfo *prev, *next; |
| 88 | }; |
| 89 | int histlines=0; |
| 90 | struct histinfo *histcurrent=NULL, *histoldest=NULL; |
| 91 | |
| 92 | char ctrl_t[128] = "/next\n"; |
| 93 | |
| 94 | unsigned char id[]="`#ssfe#", *inid=id, protcmd[BUF_SIZE], *wpc=protcmd; |
| 95 | int idstatus=0; /* 0 looking for/in the word, 1 in the arguments */ |
| 96 | #define ID_BACK "@ssfe@" |
| 97 | |
| 98 | int rc, rrc, inputcursor, inputlast, inputofs, inarrow=0, quote=0; |
| 99 | int cursorwhere; /* 0 = up, 1 = down, 2 = undef */ |
| 100 | int dispmode=1; /* 0=raw, 1=wordwrap, 2=process ^b^v^_ */ |
| 101 | int printmode=0; |
| 102 | int cutline=0; |
| 103 | |
| 104 | char *termtype, termcap[1024], *tc, capabilities[2048]; |
| 105 | char *t_cm, *t_cl, *t_mr, *t_md, *t_me, *t_cs, *t_ce, *t_us; |
| 106 | int ansi_cs = 0; |
| 107 | |
| 108 | fd_set ready, result; |
| 109 | extern int errno; |
| 110 | |
| 111 | #ifdef __GNUC__ |
| 112 | extern unsigned char *tgoto(unsigned char *cm, int col, int line); |
| 113 | #else |
| 114 | extern unsigned char *tgoto(); |
| 115 | #endif |
| 116 | |
| 117 | #ifdef __GNUC__ |
| 118 | int myputchar(int c) { |
| 119 | #else |
| 120 | int myputchar(c) { |
| 121 | #endif |
| 122 | unsigned char cc=(unsigned char)c; |
| 123 | return(write(1, &cc, 1)); |
| 124 | } |
| 125 | |
| 126 | #ifdef __GNUC__ |
| 127 | int addchar(int c) { |
| 128 | #else |
| 129 | int addchar(c) { |
| 130 | #endif |
| 131 | (*w++)=(unsigned char)c; |
| 132 | } |
| 133 | |
| 134 | #ifdef __GNUC__ |
| 135 | void putcap(unsigned char *s) { |
| 136 | #else |
| 137 | void putcap(s) |
| 138 | unsigned char *s; { |
| 139 | #endif |
| 140 | tputs(s, 0, myputchar); |
| 141 | } |
| 142 | |
| 143 | #ifdef __GNUC__ |
| 144 | int do_cs(int y1, int y2) { |
| 145 | #else |
| 146 | int do_cs(y1, y2) { |
| 147 | #endif |
| 148 | static char temp[16]; |
| 149 | if (ansi_cs) { |
| 150 | sprintf(temp, "\e[%d;%dr", y1, y2); |
| 151 | write(1, temp, strlen(temp)); |
| 152 | } else putcap((char *)tgoto(t_cs, y2-1, y1-1)); |
| 153 | } |
| 154 | |
| 155 | #ifdef __GNUC__ |
| 156 | void writecap(unsigned char *s) { |
| 157 | #else |
| 158 | void writecap(s) |
| 159 | unsigned char *s; { |
| 160 | #endif |
| 161 | tputs(s, 0, addchar); |
| 162 | } |
| 163 | |
| 164 | #ifdef __GNUC__ |
| 165 | void gotoxy(int x, int y) { |
| 166 | #else |
| 167 | void gotoxy(x, y) { |
| 168 | #endif |
| 169 | /* left upper = 0, 0 */ |
| 170 | putcap(tgoto(t_cm, x, y)); |
| 171 | } |
| 172 | |
| 173 | #define clearscreen() (putcap(t_cl)) |
| 174 | #define cleareol() (putcap(t_ce)) |
| 175 | #define fullscroll() (do_cs(0, 0)) |
| 176 | #define winscroll() (do_cs(1, lines-2)) |
| 177 | #define setbold() (putcap(t_md)) |
| 178 | #define setunder() (putcap(t_us)) |
| 179 | #define setinv() (putcap(t_mr)) |
| 180 | #define normal() (putcap(t_me)) |
| 181 | |
| 182 | #ifdef __GNUC__ |
| 183 | void ofsredisplay(int x); |
| 184 | void inschar(unsigned char t); |
| 185 | void dokbdchar(unsigned char t); |
| 186 | #else |
| 187 | void ofsredisplay(); |
| 188 | void inschar(); |
| 189 | void dokbdchar(); |
| 190 | #endif |
| 191 | void displaystatus(); |
| 192 | |
| 193 | #ifdef __GNUC__ |
| 194 | void cleanupexit(int n, unsigned char *error) { |
| 195 | #else |
| 196 | void cleanupexit(n, error) |
| 197 | int n; |
| 198 | unsigned char *error; { |
| 199 | #endif |
| 200 | normal(); |
| 201 | fullscroll(); |
| 202 | gotoxy(0, lines-1); |
| 203 | cleareol(); |
| 204 | #ifdef USE_SGTTY |
| 205 | ioctl(ttyfd, TIOCSETP, &term0); |
| 206 | ioctl(ttyfd, TIOCSETC, &tch0); |
| 207 | ioctl(ttyfd, TIOCSLTC, &lch0); |
| 208 | #else |
| 209 | tcsetattr(ttyfd, TCSADRAIN, &term0); |
| 210 | #endif |
| 211 | close(ttyfd); |
| 212 | if (error!=NULL) |
| 213 | fprintf(stderr, "%s\n", error); |
| 214 | exit(n); |
| 215 | } |
| 216 | |
| 217 | void allsigs(); |
| 218 | |
| 219 | void interrupted() { |
| 220 | cleanupexit(1, "interrupted"); |
| 221 | } |
| 222 | |
| 223 | void sigpipe() { |
| 224 | cleanupexit(1, "program died"); |
| 225 | } |
| 226 | |
| 227 | void sigcont() { |
| 228 | allsigs(); |
| 229 | #ifdef USE_SGTTY |
| 230 | ioctl(ttyfd, TIOCSETP, &term); |
| 231 | ioctl(ttyfd, TIOCSETC, &tch); |
| 232 | ioctl(ttyfd, TIOCSLTC, &lch); |
| 233 | #else |
| 234 | tcsetattr(ttyfd, TCSANOW, &term); |
| 235 | #endif |
| 236 | wherex=0; |
| 237 | wherey=ystatus-1; |
| 238 | displaystatus(); |
| 239 | ofsredisplay(0); |
| 240 | } |
| 241 | |
| 242 | void suspend() { |
| 243 | normal(); |
| 244 | fullscroll(); |
| 245 | gotoxy(0, ystatus); |
| 246 | cleareol(); |
| 247 | #ifdef USE_SGTTY |
| 248 | ioctl(ttyfd, TIOCSETP, &term0); |
| 249 | ioctl(ttyfd, TIOCSETC, &tch0); |
| 250 | ioctl(ttyfd, TIOCSLTC, &lch0); |
| 251 | #else |
| 252 | tcsetattr(ttyfd, TCSANOW, &term0); |
| 253 | #endif |
| 254 | kill(pid, SIGCONT); |
| 255 | signal(SIGTSTP, SIG_DFL); |
| 256 | signal(SIGCONT, sigcont); |
| 257 | kill(mypid, SIGTSTP); |
| 258 | } |
| 259 | |
| 260 | void sigwinch() { |
| 261 | #ifdef TIOCGWINSZ |
| 262 | signal(SIGWINCH, sigwinch); |
| 263 | if (ioctl(ttyfd, TIOCGWINSZ, &wsz)>=0 && wsz.ws_row>0 && wsz.ws_col>0) { |
| 264 | lines=wsz.ws_row; |
| 265 | cols=wsz.ws_col; |
| 266 | cursorwhere=2; |
| 267 | ystatus=lines-2; |
| 268 | yinput=lines-1; |
| 269 | wherex=0; |
| 270 | wherey=ystatus-1; |
| 271 | displaystatus(); |
| 272 | if (inputlast>cols-8) { |
| 273 | inputcursor=cols-9; |
| 274 | inputofs=inputlast-cols+9; |
| 275 | } else { |
| 276 | inputofs=0; |
| 277 | inputcursor=inputlast; |
| 278 | } |
| 279 | ofsredisplay(0); |
| 280 | } |
| 281 | #endif |
| 282 | } |
| 283 | |
| 284 | void allsigs() { |
| 285 | signal(SIGHUP, interrupted); |
| 286 | signal(SIGINT, interrupted); |
| 287 | signal(SIGQUIT, SIG_IGN); |
| 288 | signal(SIGPIPE, sigpipe); |
| 289 | signal(SIGTSTP, suspend); |
| 290 | signal(SIGCONT, sigcont); |
| 291 | #ifdef TIOCGWINSZ |
| 292 | signal(SIGWINCH, sigwinch); |
| 293 | #endif |
| 294 | } |
| 295 | |
| 296 | #ifdef __GNUC__ |
| 297 | void setstatus(unsigned char *title) { |
| 298 | #else |
| 299 | void setstatus(title) |
| 300 | unsigned char *title; { |
| 301 | #endif |
| 302 | unsigned char *t=title; |
| 303 | for (;*t;t++) if (*t<' ') (*t)+='@'; |
| 304 | memset(statusline, ' ', MAX_COLS-1); |
| 305 | memcpy(statusline, title, strlen(title)<MAX_COLS ? strlen(title) : MAX_COLS); |
| 306 | } |
| 307 | |
| 308 | void displaystatus() { |
| 309 | normal(); |
| 310 | fullscroll(); |
| 311 | gotoxy(0, ystatus); |
| 312 | setinv(); |
| 313 | write(1, statusline, cols-1); |
| 314 | if (hold_mode) { |
| 315 | gotoxy(cols-4, ystatus); |
| 316 | write(1, "(h)", 3); |
| 317 | } |
| 318 | cursorwhere=2; |
| 319 | normal(); |
| 320 | cleareol(); |
| 321 | } |
| 322 | |
| 323 | #ifdef __GNUC__ |
| 324 | int casecmp(unsigned char *s, unsigned char *t) { |
| 325 | #else |
| 326 | int casecmp(s, t) |
| 327 | unsigned char *s, *t; { |
| 328 | #endif |
| 329 | while (((*s>='a' && *s<='z')?(*s)-32:*s)== |
| 330 | ((*t>='a' && *t<='z')?(*t)-32:*t)) { |
| 331 | if (*s=='\0') return 1; |
| 332 | s++; t++; |
| 333 | } |
| 334 | return 0; |
| 335 | } |
| 336 | |
| 337 | #ifdef __GNUC__ |
| 338 | void addtab(unsigned char *line) { |
| 339 | #else |
| 340 | void addtab(line) |
| 341 | unsigned char *line; { |
| 342 | #endif |
| 343 | struct tabinfo *nt; |
| 344 | |
| 345 | nt=oldest; |
| 346 | if (tablines) do { |
| 347 | if (casecmp(nt->string, line)) { |
| 348 | strcpy(nt->string, line); |
| 349 | if (nt==oldest) oldest=nt->prev; |
| 350 | else { |
| 351 | nt->prev->next=nt->next; |
| 352 | nt->next->prev=nt->prev; |
| 353 | nt->prev=oldest; |
| 354 | nt->next=oldest->next; |
| 355 | oldest->next=nt; |
| 356 | nt->next->prev=nt; |
| 357 | } |
| 358 | curtabt=oldest->next; |
| 359 | curtabr=oldest; |
| 360 | return; |
| 361 | } |
| 362 | nt=nt->next; |
| 363 | } while (nt!=oldest); |
| 364 | |
| 365 | if (!tablines) { |
| 366 | nt=(struct tabinfo *)malloc(sizeof (struct tabinfo)); |
| 367 | nt->prev=nt->next=curtabt=curtabr=oldest=nt; |
| 368 | tablines++; |
| 369 | } else if (tablines<MAX_TAB_LINES) { |
| 370 | nt=(struct tabinfo *)malloc(sizeof (struct tabinfo)); |
| 371 | nt->prev=oldest; |
| 372 | nt->next=oldest->next; |
| 373 | oldest->next=nt; |
| 374 | nt->next->prev=nt; |
| 375 | tablines++; |
| 376 | } else { |
| 377 | nt=oldest; |
| 378 | oldest=nt->prev; |
| 379 | } |
| 380 | strcpy(nt->string, line); |
| 381 | oldest=nt->prev; |
| 382 | curtabt=oldest->next; |
| 383 | curtabr=oldest; |
| 384 | } |
| 385 | |
| 386 | void doprotcommand() { |
| 387 | unsigned char *tmp; |
| 388 | |
| 389 | switch (protcmd[0]) { |
| 390 | case 'i' : dispmode=2; /* set irc mode, ack */ |
| 391 | bold=inv=under=0; |
| 392 | write(writefd, "@ssfe@i\n", 8); |
| 393 | break; |
| 394 | case 'c' : dispmode=1; /* set cooked mode, ack */ |
| 395 | write(writefd, "@ssfe@c\n", 8); |
| 396 | break; |
| 397 | case 's' : setstatus(protcmd+1); /* set status */ |
| 398 | displaystatus(); |
| 399 | break; |
| 400 | case 'T' : strncpy(ctrl_t, protcmd+1, 127); /* set ^t's text */ |
| 401 | ctrl_t[126] = '\0'; |
| 402 | strcat(ctrl_t, "\n"); |
| 403 | break; |
| 404 | case 't' : addtab(protcmd+1); /* add tabkey entry */ |
| 405 | break; |
| 406 | case 'l' : fullscroll(); /* clear screen */ |
| 407 | normal(); |
| 408 | clearscreen(); |
| 409 | bold=inv=under=wherex=wherey=donl=0; |
| 410 | displaystatus(); |
| 411 | ofsredisplay(0); |
| 412 | break; |
| 413 | |
| 414 | case 'P' : no_echo = 1; /* password prompt */ |
| 415 | case 'p' : if (strlen(protcmd+1)<=8) { /* prompt something */ |
| 416 | fullscroll(); |
| 417 | if (!specialprompt) { |
| 418 | histcurrent->len=inputlast; |
| 419 | histcurrent->plen=plen; |
| 420 | } |
| 421 | input=extrainput; |
| 422 | strcpy(input, protcmd+1); |
| 423 | plen=strlen(input); |
| 424 | inputofs=0; |
| 425 | modified=specialprompt=1; |
| 426 | inputlast=inputcursor=plen; |
| 427 | ofsredisplay(0); |
| 428 | } |
| 429 | break; |
| 430 | case 'n' : if (cursorwhere!=1) { /* type text */ |
| 431 | normal(); |
| 432 | fullscroll(); |
| 433 | gotoxy(inputcursor, yinput); |
| 434 | cursorwhere=1; |
| 435 | } |
| 436 | for (tmp=protcmd+1; *tmp; tmp++) { |
| 437 | inschar(*tmp); |
| 438 | } |
| 439 | break; |
| 440 | case 'o' : strcpy(o_buffer, protcmd+1); |
| 441 | break; |
| 442 | } |
| 443 | } |
| 444 | |
| 445 | void newline() { |
| 446 | unsigned char t; |
| 447 | hold_lines++; |
| 448 | if (hold_mode && hold_lines>lines-4) { |
| 449 | normal(); |
| 450 | fullscroll(); |
| 451 | gotoxy(cols-4, ystatus); |
| 452 | setinv(); |
| 453 | write(1, "(H)", 3); |
| 454 | while(1) { |
| 455 | read(0, &t, 1); |
| 456 | if (t==9) break; |
| 457 | dokbdchar(t); |
| 458 | } |
| 459 | normal(); |
| 460 | fullscroll(); |
| 461 | gotoxy(cols-4, ystatus); |
| 462 | setinv(); |
| 463 | write(1, "(h)", 3); |
| 464 | hold_lines=0; |
| 465 | normal(); |
| 466 | winscroll(); |
| 467 | gotoxy(cols-1, wherey); |
| 468 | if (bold) setbold(); |
| 469 | if (under) setunder(); |
| 470 | if (inv) setinv(); |
| 471 | } |
| 472 | } |
| 473 | |
| 474 | #ifdef __GNUC__ |
| 475 | void formatter(unsigned char *readbuf, int rc) { |
| 476 | #else |
| 477 | void formatter(readbuf, rc) |
| 478 | unsigned char *readbuf; |
| 479 | int rc; { |
| 480 | #endif |
| 481 | |
| 482 | unsigned char t, *r, *lwr, *lww; |
| 483 | int lwrc, lwbold, lwunder, lwinv, lwx; |
| 484 | |
| 485 | if (cursorwhere!=0) { |
| 486 | winscroll(); |
| 487 | gotoxy(wherex, wherey); |
| 488 | cursorwhere=0; |
| 489 | } |
| 490 | if (donl) { |
| 491 | newline(); |
| 492 | write(1, "\r\n", 2); |
| 493 | normal(); |
| 494 | wherex=0; |
| 495 | bold=inv=under=lwbold=lwinv=lwunder=0; |
| 496 | if (wherey<ystatus-1) wherey++; |
| 497 | } else if (dispmode>1) { |
| 498 | if (bold) setbold(); |
| 499 | if (under) setunder(); |
| 500 | if (inv) setinv(); |
| 501 | lwbold=bold; |
| 502 | lwinv=inv; |
| 503 | lwunder=under; |
| 504 | } |
| 505 | if (rc && readbuf[rc-1]=='\n') { |
| 506 | rc--; |
| 507 | donl=1; cutline=0; |
| 508 | } else { |
| 509 | donl=0; |
| 510 | if (dispmode==0) cutline=1; |
| 511 | } |
| 512 | if (dispmode==0) { |
| 513 | if (rc) write(1, readbuf, rc); |
| 514 | normal(); |
| 515 | return; |
| 516 | } |
| 517 | lww=w=writebuf; |
| 518 | lwr=r=readbuf; |
| 519 | lwrc=rc; |
| 520 | lwx=wherex; |
| 521 | while(rc-->0) { |
| 522 | t=(*r++); |
| 523 | if (t=='\r') continue; |
| 524 | if (wherex>cols-2 || (t==9 && wherex>(cols-2)&0xfff8)) { |
| 525 | if (t==' ' || t==9) ; |
| 526 | else if (lww>writebuf+cols/2) { |
| 527 | wherex=lwx; r=lwr; w=lww; rc=lwrc; |
| 528 | bold=lwbold; inv=lwinv; under=lwunder; wherex=lwx; |
| 529 | } else { |
| 530 | rc++; r--; |
| 531 | } |
| 532 | write(1, writebuf, w-writebuf); |
| 533 | newline(); |
| 534 | write(1, "\r\n ", 13); |
| 535 | w=writebuf; |
| 536 | lwr=r; lww=w; lwrc=rc; |
| 537 | lwbold=bold; lwinv=inv; lwunder=under; |
| 538 | lwx=wherex=11; |
| 539 | if (wherey<ystatus-1) wherey++; |
| 540 | rc--; t=(*r++); |
| 541 | } |
| 542 | if (t=='\n') { |
| 543 | if (w!=writebuf) write(1, writebuf, w-writebuf); |
| 544 | newline(); |
| 545 | write(1, "\r\n", 2); |
| 546 | normal(); |
| 547 | w=writebuf; |
| 548 | lwr=r; lww=w; lwrc=rc; |
| 549 | lwbold=bold=lwinv=inv=lwunder=under=lwx=wherex=0; |
| 550 | if (wherey<ystatus-1) wherey++; |
| 551 | } else if (dispmode>1 && |
| 552 | ((t==2 && bold) || (t==22 && inv) || (t==31 && under))) { |
| 553 | writecap(t_me); |
| 554 | bold=under=inv=0; |
| 555 | } else if (dispmode>1 && t==2) { |
| 556 | writecap(t_md); |
| 557 | bold=1; |
| 558 | } else if (dispmode>1 && t==22) { |
| 559 | writecap(t_mr); |
| 560 | inv=1; |
| 561 | } else if (dispmode>1 && t==31) { |
| 562 | writecap(t_us); |
| 563 | under=1; |
| 564 | } else if (dispmode>1 && t==15) { |
| 565 | if (bold || inv || under) writecap(t_me); |
| 566 | bold=under=inv=0; |
| 567 | } else if (t==9) { |
| 568 | (*w++)=t; |
| 569 | wherex=(wherex & 0xfff8)+8; |
| 570 | } else if (t<' ' && (t!=7 || !beep)) { |
| 571 | wherex++; |
| 572 | if (inv) { |
| 573 | writecap(t_me); |
| 574 | (*w++)=(t+'@'); |
| 575 | } else { |
| 576 | writecap(t_mr); |
| 577 | (*w++)=(t+'@'); |
| 578 | writecap(t_me); |
| 579 | } |
| 580 | if (bold) writecap(t_md); |
| 581 | if (inv) writecap(t_mr); |
| 582 | if (under) writecap(t_us); |
| 583 | } else { |
| 584 | if (t!=7) wherex++; |
| 585 | (*w++)=t; |
| 586 | } |
| 587 | if (t==' ' || t==9) { |
| 588 | lwr=r; lww=w; lwrc=rc; |
| 589 | lwbold=bold; lwinv=inv; lwunder=under; |
| 590 | lwx=wherex; |
| 591 | } |
| 592 | } |
| 593 | if (w!=writebuf) write(1, writebuf, w-writebuf); |
| 594 | } |
| 595 | |
| 596 | #ifdef __GNUC__ |
| 597 | void doprogramline(unsigned char *readbuf, int rc) { |
| 598 | #else |
| 599 | void doprogramline(readbuf, rc) |
| 600 | unsigned char *readbuf; |
| 601 | int rc; { |
| 602 | #endif |
| 603 | |
| 604 | unsigned char *w, *r, *r2, t; |
| 605 | if (dispmode==0) { |
| 606 | formatter(readbuf, rc); |
| 607 | return; |
| 608 | } |
| 609 | w=r=readbuf; |
| 610 | while(rc-->0) { |
| 611 | t=(*r++); |
| 612 | if (idstatus==0) |
| 613 | if (*inid=='\0') { |
| 614 | idstatus=1; |
| 615 | wpc=protcmd; |
| 616 | inid=id; |
| 617 | } else if (*inid==t && (inid!=id || r==(readbuf+1) || *(r-2)=='\n')) { |
| 618 | inid++; |
| 619 | (*wpc++)=t; |
| 620 | } else { |
| 621 | r2=protcmd; |
| 622 | while (r2!=wpc) (*w++)=(*r2++); |
| 623 | (*w++)=t; |
| 624 | wpc=protcmd; |
| 625 | inid=id; |
| 626 | } |
| 627 | if (idstatus==1) |
| 628 | if (t=='\n') { |
| 629 | *wpc='\0'; |
| 630 | doprotcommand(); |
| 631 | inid=id; |
| 632 | wpc=protcmd; |
| 633 | idstatus=0; |
| 634 | } else (*wpc++)=t; |
| 635 | } |
| 636 | if (w!=readbuf) formatter(readbuf, w-readbuf); |
| 637 | } |
| 638 | |
| 639 | #ifdef __GNUC__ |
| 640 | void write1(unsigned char t, int pos) { |
| 641 | #else |
| 642 | void write1(t, pos) |
| 643 | unsigned char t; |
| 644 | int pos; { |
| 645 | #endif |
| 646 | if (no_echo && pos>=plen) { |
| 647 | write(1, "*", 1); |
| 648 | } else if (t>=' ') |
| 649 | write(1, &t, 1); |
| 650 | else { |
| 651 | setinv(); |
| 652 | t+='@'; |
| 653 | write(1, &t, 1); |
| 654 | normal(); |
| 655 | } |
| 656 | } |
| 657 | |
| 658 | #ifdef __GNUC__ |
| 659 | void ofsredisplay(int x) { |
| 660 | #else |
| 661 | void ofsredisplay(x) { |
| 662 | #endif |
| 663 | /* redisplays starting at x */ |
| 664 | unsigned char *w; |
| 665 | int i; |
| 666 | gotoxy(x, yinput); |
| 667 | if (inputlast-inputofs>=x) { |
| 668 | i=((inputlast-inputofs>cols-1 ? cols-1-x : inputlast-inputofs-x)); |
| 669 | for (w=input+inputofs+x; i--; w++) write1(*w, w-input); |
| 670 | } |
| 671 | cleareol(); |
| 672 | gotoxy(inputcursor, yinput); |
| 673 | cursorwhere=1; |
| 674 | } |
| 675 | |
| 676 | #ifdef __GNUC__ |
| 677 | void delempty(struct histinfo *leavealone) { |
| 678 | #else |
| 679 | void delempty(leavealone) |
| 680 | struct histinfo *leavealone; { |
| 681 | #endif |
| 682 | struct histinfo *h, *h2; |
| 683 | int cont=0; |
| 684 | h=histoldest; |
| 685 | do { |
| 686 | cont=0; |
| 687 | if ((h->len<=h->plen) && (h!=leavealone)) { |
| 688 | histlines--; |
| 689 | h->next->prev=h->prev; |
| 690 | h->prev->next=h->next; |
| 691 | h2=h->prev; |
| 692 | free(h); |
| 693 | if (h==histoldest) { |
| 694 | histoldest=h2; |
| 695 | cont=1; |
| 696 | } |
| 697 | h=h2; |
| 698 | } else h=h->prev; |
| 699 | } while ((h!=histoldest || cont) && histlines>0); |
| 700 | if (!histlines) { |
| 701 | histoldest=NULL; |
| 702 | return; |
| 703 | } |
| 704 | } |
| 705 | |
| 706 | struct histinfo *makenew() { |
| 707 | struct histinfo *nh; |
| 708 | if (!histlines) { |
| 709 | nh=(struct histinfo *)malloc(sizeof (struct histinfo)); |
| 710 | nh->prev=nh->next=histoldest=nh; |
| 711 | histlines++; |
| 712 | } else if (histlines<MAX_HIST_LINES) { |
| 713 | nh=(struct histinfo *)malloc(sizeof (struct histinfo)); |
| 714 | nh->prev=histoldest; |
| 715 | nh->next=histoldest->next; |
| 716 | histoldest->next=nh; |
| 717 | nh->next->prev=nh; |
| 718 | histlines++; |
| 719 | } else { |
| 720 | nh=histoldest; |
| 721 | histoldest=nh->prev; |
| 722 | } |
| 723 | return nh; |
| 724 | } |
| 725 | |
| 726 | #ifdef __GNUC__ |
| 727 | void sendline(int yank) { |
| 728 | #else |
| 729 | void sendline(yank) { |
| 730 | #endif |
| 731 | if (!specialprompt) { |
| 732 | histcurrent->len=inputlast; |
| 733 | histcurrent->plen=plen; |
| 734 | } |
| 735 | if (!yank) { |
| 736 | input[inputlast]='\n'; |
| 737 | if (printmode) formatter(input, inputlast+1); |
| 738 | if (write(writefd, input+plen, inputlast+1-plen)<inputlast+1-plen) |
| 739 | cleanupexit(1, "write error"); |
| 740 | } |
| 741 | input[inputlast]='\0'; |
| 742 | delempty(NULL); |
| 743 | histcurrent=makenew(); |
| 744 | input=histcurrent->string; |
| 745 | strcpy(input, prompt); |
| 746 | plen=strlen(prompt); |
| 747 | inputofs=specialprompt=0; |
| 748 | modified=1; |
| 749 | inputcursor=inputlast=plen; |
| 750 | ofsredisplay(0); |
| 751 | no_echo=0; |
| 752 | } |
| 753 | |
| 754 | void modify() { |
| 755 | struct histinfo *h; |
| 756 | if (!modified) { |
| 757 | if (inputlast>plen) { |
| 758 | h=histcurrent; |
| 759 | delempty(h); |
| 760 | histcurrent=makenew(); |
| 761 | strcpy(histcurrent->string, h->string); |
| 762 | input=histcurrent->string; |
| 763 | } |
| 764 | modified=1; |
| 765 | } |
| 766 | } |
| 767 | |
| 768 | void fixpos() { |
| 769 | if (inputcursor<8 && inputofs>0) { |
| 770 | inputofs-=cols-16; |
| 771 | inputcursor+=cols-16; |
| 772 | if (inputofs<0) { |
| 773 | inputcursor+=inputofs; |
| 774 | inputofs=0; |
| 775 | } |
| 776 | ofsredisplay(0); |
| 777 | } else if (inputcursor>cols-8) { |
| 778 | inputofs+=cols-16; |
| 779 | inputcursor-=cols-16; |
| 780 | ofsredisplay(0); |
| 781 | } |
| 782 | } |
| 783 | |
| 784 | void reshow() { |
| 785 | if (inputlast>cols-8) { |
| 786 | inputcursor=cols-9; |
| 787 | inputofs=inputlast-cols+9; |
| 788 | } else { |
| 789 | inputofs=0; |
| 790 | inputcursor=inputlast; |
| 791 | } |
| 792 | ofsredisplay(0); |
| 793 | } |
| 794 | |
| 795 | #ifdef __GNUC__ |
| 796 | void inschar(unsigned char t) { |
| 797 | #else |
| 798 | void inschar(t) |
| 799 | unsigned char t; { |
| 800 | #endif |
| 801 | |
| 802 | unsigned char *tmp; |
| 803 | |
| 804 | if (inputlast<BUF_SIZE-4) { |
| 805 | modify(); |
| 806 | if (inputofs+inputcursor==inputlast) { |
| 807 | write1(t, inputlast); |
| 808 | input[inputlast++]=t; |
| 809 | input[inputlast]='\0'; |
| 810 | inputcursor++; |
| 811 | } else { |
| 812 | tmp=input+inputlast; |
| 813 | while (tmp>=input+inputofs+inputcursor) |
| 814 | *(tmp+1)=(*tmp--); |
| 815 | input[inputofs+(inputcursor++)]=t; |
| 816 | inputlast++; |
| 817 | ofsredisplay(inputcursor-1); |
| 818 | } |
| 819 | fixpos(); |
| 820 | } |
| 821 | } |
| 822 | |
| 823 | #ifdef __GNUC__ |
| 824 | void dokbdchar(unsigned char t) { |
| 825 | #else |
| 826 | void dokbdchar(t) |
| 827 | unsigned char t; { |
| 828 | #endif |
| 829 | |
| 830 | unsigned char *tmp; |
| 831 | |
| 832 | if (inarrow==1) { |
| 833 | if (t=='[' || t=='O') { |
| 834 | inarrow++; |
| 835 | return; |
| 836 | } |
| 837 | inarrow=0; |
| 838 | } else if (inarrow==2) { |
| 839 | inarrow=0; |
| 840 | if (t=='D') t=2; |
| 841 | else if (t=='C') t=6; |
| 842 | else if (t=='A') t=16; |
| 843 | else if (t=='B') t=14; |
| 844 | else return; |
| 845 | } |
| 846 | if (ctrlx && !quote) { |
| 847 | ctrlx=0; |
| 848 | t|=0x20; |
| 849 | if (dispmode>0 && ((t=='h' && !hold_mode) || t=='y')) { |
| 850 | hold_mode=1; |
| 851 | hold_lines=0; |
| 852 | if (cursorwhere!=1) fullscroll(); |
| 853 | cursorwhere=2; |
| 854 | normal(); |
| 855 | gotoxy(cols-4, ystatus); |
| 856 | setinv(); |
| 857 | write(1, "(h)", 3); |
| 858 | normal(); |
| 859 | } else if (dispmode>0 && ((t=='h' && hold_mode) || t=='n')) { |
| 860 | hold_mode=0; |
| 861 | if (cursorwhere!=1) fullscroll(); |
| 862 | cursorwhere=2; |
| 863 | normal(); |
| 864 | gotoxy(cols-4, ystatus); |
| 865 | setinv(); |
| 866 | write(1, " ", 3); |
| 867 | normal(); |
| 868 | } else if (dispmode>0 && t=='i') { |
| 869 | dispmode=3-dispmode; |
| 870 | bold=inv=under=0; |
| 871 | } else if (dispmode>0 && t=='b') { |
| 872 | beep=!beep; |
| 873 | } else if (t=='c') cleanupexit(1, "exiting"); |
| 874 | return; |
| 875 | } |
| 876 | if (cutline) donl=1; |
| 877 | if (cursorwhere!=1) { |
| 878 | normal(); |
| 879 | fullscroll(); |
| 880 | gotoxy(inputcursor, yinput); |
| 881 | cursorwhere=1; |
| 882 | } |
| 883 | if (t==24 && !quote) { |
| 884 | ctrlx=1; |
| 885 | return; |
| 886 | } else ctrlx=0; |
| 887 | if (t==27 && !quote) { |
| 888 | inarrow=1; |
| 889 | } else if ((t==10 || t==13) && !quote) { /* return, newline */ |
| 890 | sendline(0); |
| 891 | if (tablines) { |
| 892 | curtabr=oldest; |
| 893 | curtabt=oldest->next; |
| 894 | } |
| 895 | } else if (t==25 && !quote) { /* ^y */ |
| 896 | if (!specialprompt) { |
| 897 | sendline(1); |
| 898 | if (tablines) { |
| 899 | curtabr=oldest; |
| 900 | curtabt=oldest->next; |
| 901 | } |
| 902 | } |
| 903 | } else if (t==21 && !quote) { /* ^u */ |
| 904 | modify(); |
| 905 | input[plen]='\0'; |
| 906 | inputcursor=inputlast=plen; |
| 907 | inputofs=0; |
| 908 | ofsredisplay(0); |
| 909 | } else if ((t==8 || t==0x7f) && !quote) { /* ^h, ^? */ |
| 910 | if (inputcursor>plen) { |
| 911 | modify(); |
| 912 | tmp=input+inputcursor+inputofs; |
| 913 | while (tmp<input+inputlast) |
| 914 | *(tmp-1)=(*tmp++); |
| 915 | input[--inputlast]='\0'; |
| 916 | gotoxy(--inputcursor, yinput); |
| 917 | ofsredisplay(inputcursor); |
| 918 | fixpos(); |
| 919 | } |
| 920 | } else if (t==4 && !quote) { /* ^d */ |
| 921 | if (inputcursor+inputofs<inputlast) { |
| 922 | modify(); |
| 923 | tmp=input+inputcursor+inputofs+1; |
| 924 | while (tmp<input+inputlast) |
| 925 | *(tmp-1)=(*tmp++); |
| 926 | input[--inputlast]='\0'; |
| 927 | gotoxy(inputcursor, yinput); |
| 928 | ofsredisplay(inputcursor); |
| 929 | } |
| 930 | } else if (t==11 && !quote) { /* ^k */ |
| 931 | if (inputcursor+inputofs<inputlast) { |
| 932 | modify(); |
| 933 | input[inputlast=inputofs+inputcursor]='\0'; |
| 934 | ofsredisplay(inputcursor); |
| 935 | } |
| 936 | } else if (t==2 && !quote) { /* ^b */ |
| 937 | if (inputcursor>0 && (inputcursor>plen || inputofs>0)) { |
| 938 | gotoxy(--inputcursor, yinput); |
| 939 | fixpos(); |
| 940 | } |
| 941 | } else if (t==6 && !quote) { /* ^f */ |
| 942 | if (inputcursor+inputofs<inputlast) { |
| 943 | gotoxy(++inputcursor, yinput); |
| 944 | fixpos(); |
| 945 | } |
| 946 | } else if (t==1 && !quote) { /* ^a */ |
| 947 | if (inputcursor+inputofs>plen) { |
| 948 | if (inputofs==0) |
| 949 | gotoxy((inputcursor=plen), yinput); |
| 950 | else { |
| 951 | inputofs=0; |
| 952 | inputcursor=plen; |
| 953 | ofsredisplay(0); |
| 954 | } |
| 955 | } |
| 956 | } else if (t==5 && !quote) { /* ^e */ |
| 957 | if (inputcursor+inputofs<inputlast) { |
| 958 | if (inputlast-inputofs<cols-3) { |
| 959 | gotoxy((inputcursor=inputlast-inputofs), yinput); |
| 960 | } else if (inputlast>cols-8) { |
| 961 | inputcursor=cols-9; |
| 962 | inputofs=inputlast-cols+9; |
| 963 | ofsredisplay(0); |
| 964 | } else { |
| 965 | inputofs=0; |
| 966 | inputcursor=inputlast; |
| 967 | ofsredisplay(0); |
| 968 | } |
| 969 | } |
| 970 | } else if (t==12 && !quote) { /* ^l */ |
| 971 | displaystatus(); |
| 972 | ofsredisplay(0); |
| 973 | } else if (t==9 && !quote) { /* TAB */ |
| 974 | if (tablines) { |
| 975 | modify(); |
| 976 | strcpy(input+plen, curtabt->string); |
| 977 | curtabr=curtabt->prev; |
| 978 | curtabt=curtabt->next; |
| 979 | inputlast=strlen(input); |
| 980 | reshow(); |
| 981 | } |
| 982 | } else if (t==18 && !quote) { /* ^r */ |
| 983 | if (tablines) { |
| 984 | modify(); |
| 985 | strcpy(input+plen, curtabr->string); |
| 986 | curtabt=curtabr->next; |
| 987 | curtabr=curtabr->prev; |
| 988 | inputlast=strlen(input); |
| 989 | reshow(); |
| 990 | } |
| 991 | } else if (t==16 && !quote) { /* ^p */ |
| 992 | if (histlines>1 && !specialprompt) { |
| 993 | histcurrent->plen=plen; |
| 994 | histcurrent->len=inputlast; |
| 995 | histcurrent=histcurrent->next; |
| 996 | plen=histcurrent->plen; |
| 997 | inputlast=histcurrent->len; |
| 998 | input=histcurrent->string; |
| 999 | modified=0; |
| 1000 | reshow(); |
| 1001 | } |
| 1002 | } else if (t==14 && !quote) { /* ^n */ |
| 1003 | if (histlines>1 && !specialprompt) { |
| 1004 | histcurrent->plen=plen; |
| 1005 | histcurrent->len=inputlast; |
| 1006 | histcurrent=histcurrent->prev; |
| 1007 | plen=histcurrent->plen; |
| 1008 | inputlast=histcurrent->len; |
| 1009 | input=histcurrent->string; |
| 1010 | modified=0; |
| 1011 | reshow(); |
| 1012 | } |
| 1013 | } else if (t==15 &&!quote) { /* ^o */ |
| 1014 | if (strlen(o_buffer)) modify(); |
| 1015 | for (tmp=o_buffer; *tmp; tmp++) inschar(*tmp); |
| 1016 | } else if (t==20 && !quote) { /* ^t */ |
| 1017 | write(writefd, ctrl_t, strlen(ctrl_t)); |
| 1018 | } else if (t==22 && !quote) { /* ^v */ |
| 1019 | quote++; |
| 1020 | return; |
| 1021 | #ifdef CONTROL_W |
| 1022 | } else if (t==23 && !quote) { /* ^w */ |
| 1023 | fullscroll(); |
| 1024 | normal(); |
| 1025 | clearscreen(); |
| 1026 | bold=inv=under=wherex=wherey=donl=0; |
| 1027 | displaystatus(); |
| 1028 | ofsredisplay(0); |
| 1029 | #endif |
| 1030 | } else inschar(t); |
| 1031 | quote=0; |
| 1032 | } |
| 1033 | |
| 1034 | #ifdef __GNUC__ |
| 1035 | void barf(unsigned char *m) { |
| 1036 | #else |
| 1037 | void barf(m) |
| 1038 | unsigned char *m; { |
| 1039 | #endif |
| 1040 | fprintf(stderr, "%s\n", m); |
| 1041 | exit(1); |
| 1042 | } |
| 1043 | |
| 1044 | char *myname; |
| 1045 | |
| 1046 | void use() { |
| 1047 | fprintf(stderr, "Use: %s [options] program [program's options]\n", myname); |
| 1048 | fprintf(stderr, "Options are:\n"); |
| 1049 | fprintf(stderr, " -raw, -cooked, -irc : set display mode\n"); |
| 1050 | fprintf(stderr, " -print : print your input lines\n"); |
| 1051 | fprintf(stderr, " -prompt <prompt> : specify a command-line prompt\n"); |
| 1052 | fprintf(stderr, " -hold : pause after each full screen (for cooked/irc mode)\n"); |
| 1053 | fprintf(stderr, " -beep : let beeps through (for cooked/irc mode)\n"); |
| 1054 | fprintf(stderr, " -flow : leave ^S/^Q alone for flow control\n"); |
| 1055 | exit(1); |
| 1056 | } |
| 1057 | |
| 1058 | #ifdef __GNUC__ |
| 1059 | int main(int argc, char *argv[]) { |
| 1060 | #else |
| 1061 | int main(argc, argv) |
| 1062 | int argc; |
| 1063 | char *argv[]; { |
| 1064 | #endif |
| 1065 | |
| 1066 | char *vr; |
| 1067 | int pfds0[2], pfds1[2], pfds2[2]; |
| 1068 | |
| 1069 | myname=(*argv); |
| 1070 | prompt=nullstring; |
| 1071 | while (argc>1) { |
| 1072 | if (strcmp(argv[1], "-raw")==0) { |
| 1073 | dispmode=0; |
| 1074 | argv++; argc--; |
| 1075 | } else if (strcmp(argv[1], "-cooked")==0) { |
| 1076 | dispmode=1; |
| 1077 | argv++; argc--; |
| 1078 | } else if (strcmp(argv[1], "-irc")==0) { |
| 1079 | dispmode=2; |
| 1080 | argv++; argc--; |
| 1081 | } else if (strcmp(argv[1], "-hold")==0) { |
| 1082 | hold_mode=1; |
| 1083 | argv++; argc--; |
| 1084 | } else if (strcmp(argv[1], "-print")==0) { |
| 1085 | argv++; argc--; |
| 1086 | if (prompt==nullstring) prompt=defprompt; |
| 1087 | printmode=1; |
| 1088 | } else if (strcmp(argv[1], "-beep")==0) { |
| 1089 | beep=1; |
| 1090 | argv++; argc--; |
| 1091 | } else if (strcmp(argv[1], "-flow")==0) { |
| 1092 | flow=1; |
| 1093 | argv++; argc--; |
| 1094 | } else if (strcmp(argv[1], "-prompt")==0) { |
| 1095 | if (argc>2) prompt=(unsigned char *)argv[2]; |
| 1096 | if (strlen(prompt)>8) barf("Prompt too long"); |
| 1097 | argv+=2; argc-=2; |
| 1098 | } else break; |
| 1099 | } |
| 1100 | if (argc<2) use(); |
| 1101 | if (!isatty(0)) barf("I can only run on a tty, sorry"); |
| 1102 | if ((termtype=getenv("TERM"))==NULL) barf("No terminal type set"); |
| 1103 | if (tgetent(termcap, termtype)<1) barf("No termcap info for your terminal"); |
| 1104 | tc=capabilities; |
| 1105 | if ((t_cm=(char *)tgetstr("cm", &tc))==NULL) |
| 1106 | barf("Can't find a way to move the cursor around with your terminal"); |
| 1107 | if ((t_cl=(char *)tgetstr("cl", &tc))==NULL) |
| 1108 | barf("Can't find a way to clear the screen with your terminal"); |
| 1109 | if ((t_ce=(char *)tgetstr("ce", &tc))==NULL) |
| 1110 | barf("Can't find a way to clear to end of line with your terminal"); |
| 1111 | if ((t_cs=(char *)tgetstr("cs", &tc))==NULL) { |
| 1112 | if (strncmp(termtype, "xterm", 5)==0 || strncmp(termtype, "vt100", 5)==0) |
| 1113 | ansi_cs=1; |
| 1114 | else |
| 1115 | barf("Can't find a way to set the scrolling region with your terminal"); |
| 1116 | } |
| 1117 | if ((t_me=(char *)tgetstr("me", &tc))!=NULL) { |
| 1118 | if ((t_mr=(char *)tgetstr("mr", &tc))==NULL) t_mr=t_me; |
| 1119 | if ((t_md=(char *)tgetstr("md", &tc))==NULL) t_md=t_me; |
| 1120 | if ((t_us=(char *)tgetstr("us", &tc))==NULL) t_us=t_me; |
| 1121 | } else if ((t_me=(char *)tgetstr("se", &tc))!=NULL && |
| 1122 | (t_mr=(char *)tgetstr("so", &tc))!=NULL) { |
| 1123 | t_md=t_mr; |
| 1124 | t_us=tc; |
| 1125 | (*tc++)='\0'; |
| 1126 | } else { |
| 1127 | t_me=t_md=t_mr=t_us=tc; |
| 1128 | (*tc++)='\0'; |
| 1129 | } |
| 1130 | |
| 1131 | /* |
| 1132 | if ((ttyfd=open("/dev/tty", O_RDWR))<0 && |
| 1133 | (ttyfd=open("/dev/tty", O_RDONLY))<0) barf("Can't open terminal!"); |
| 1134 | */ |
| 1135 | ttyfd = 0; |
| 1136 | |
| 1137 | #ifdef TIOCGWINSZ |
| 1138 | if (ioctl(ttyfd, TIOCGWINSZ, &wsz)<0 || wsz.ws_row<1 || wsz.ws_col<1) { |
| 1139 | #endif |
| 1140 | lines=((vr=getenv("LINES"))?atoi(vr):0); |
| 1141 | cols=((vr=getenv("COLUMNS"))?atoi(vr):0); |
| 1142 | if (lines<1 || cols<1) { |
| 1143 | if ((lines=tgetnum("li"))<1 || (cols=tgetnum("co"))<1) { |
| 1144 | lines=24; cols=80; |
| 1145 | } |
| 1146 | } |
| 1147 | #ifdef TIOCGWINSZ |
| 1148 | } else { |
| 1149 | lines=wsz.ws_row; |
| 1150 | cols=wsz.ws_col; |
| 1151 | } |
| 1152 | #endif |
| 1153 | |
| 1154 | if (pipe(pfds0)<0 || pipe(pfds1)<0 || pipe(pfds2)<0) { |
| 1155 | perror("pipe"); |
| 1156 | exit(1); |
| 1157 | } |
| 1158 | mypid=getpid(); |
| 1159 | switch (pid=fork()) { |
| 1160 | case -1: |
| 1161 | perror("fork"); |
| 1162 | exit(1); |
| 1163 | case 0: |
| 1164 | if (pfds0[0]!=0) dup2(pfds0[0], 0); |
| 1165 | if (pfds1[1]!=1) dup2(pfds1[1], 1); |
| 1166 | if (pfds2[1]!=2) dup2(pfds2[1], 2); |
| 1167 | if (pfds0[0]>2) close(pfds0[0]); |
| 1168 | if (pfds0[1]>2) close(pfds0[1]); |
| 1169 | if (pfds1[0]>2) close(pfds1[0]); |
| 1170 | if (pfds1[1]>2) close(pfds1[1]); |
| 1171 | if (pfds2[0]>2) close(pfds2[0]); |
| 1172 | if (pfds2[1]>2) close(pfds2[1]); |
| 1173 | /* okay we can read from 0 and write to 1 and 2, now.. it seems */ |
| 1174 | execvp(argv[1], argv+1); |
| 1175 | perror("exec"); |
| 1176 | sleep(1); |
| 1177 | exit(1); |
| 1178 | default: |
| 1179 | close(pfds0[0]); |
| 1180 | close(pfds1[1]); |
| 1181 | close(pfds2[1]); |
| 1182 | readfd=pfds1[0]; |
| 1183 | writefd=pfds0[1]; |
| 1184 | errfd=pfds2[0]; |
| 1185 | } |
| 1186 | |
| 1187 | #ifdef USE_SGTTY |
| 1188 | |
| 1189 | if (ioctl(ttyfd, TIOCGETP, &term)<0 || ioctl(ttyfd, TIOCGETC, &tch)<0 || |
| 1190 | ioctl(ttyfd, TIOCGLTC, &lch)<0) { |
| 1191 | perror("sgtty get ioctl"); |
| 1192 | exit(1); |
| 1193 | } |
| 1194 | term0=term; |
| 1195 | tch0=tch; |
| 1196 | lch0=lch; |
| 1197 | term.sg_flags|=CBREAK; |
| 1198 | term.sg_flags&= ~ECHO & ~CRMOD; |
| 1199 | |
| 1200 | memset(&tch, -1, sizeof(tch)); |
| 1201 | memset(&lch, -1, sizeof(lch)); |
| 1202 | tch.t_intrc=(char)28; |
| 1203 | tch.t_quitc=(char)3; |
| 1204 | if (flow) { |
| 1205 | tch.t_startc=(char)17; |
| 1206 | tch.t_stopc=(char)19; |
| 1207 | } |
| 1208 | lch.t_suspc=(char)26; |
| 1209 | |
| 1210 | if (ioctl(ttyfd, TIOCSETP, &term)<0 || ioctl(ttyfd, TIOCSETC, &tch)<0 || |
| 1211 | ioctl(ttyfd, TIOCSLTC, &lch)<0) { |
| 1212 | perror("sgtty set ioctl"); |
| 1213 | exit(1); |
| 1214 | } |
| 1215 | |
| 1216 | #else |
| 1217 | if (tcgetattr(ttyfd, &term)<0) { |
| 1218 | perror("tcgetattr"); |
| 1219 | exit(1); |
| 1220 | } |
| 1221 | term0=term; |
| 1222 | |
| 1223 | term.c_lflag &= ~ECHO & ~ICANON; |
| 1224 | term.c_cc[VTIME]=(char)0; |
| 1225 | term.c_cc[VMIN]=(char)1; |
| 1226 | if (!flow) { |
| 1227 | term.c_cc[VSTOP]=(char)0; |
| 1228 | term.c_cc[VSTART]=(char)0; |
| 1229 | } |
| 1230 | term.c_cc[VQUIT]=(char)3; |
| 1231 | term.c_cc[VINTR]=(char)28; /* reverse ^c and ^\ */ |
| 1232 | term.c_cc[VSUSP]=(char)26; |
| 1233 | #ifdef VREPRINT |
| 1234 | term.c_cc[VREPRINT]=(char)0; |
| 1235 | #endif |
| 1236 | #ifdef VDISCARD |
| 1237 | term.c_cc[VDISCARD]=(char)0; |
| 1238 | #endif |
| 1239 | #ifdef VLNEXT |
| 1240 | term.c_cc[VLNEXT]=(char)0; |
| 1241 | #endif |
| 1242 | #ifdef VDSUSP |
| 1243 | term.c_cc[VDSUSP]=(char)0; |
| 1244 | #endif |
| 1245 | |
| 1246 | if (tcsetattr(ttyfd, TCSANOW, &term)<0) { |
| 1247 | perror("tcsetattr"); |
| 1248 | exit(1); |
| 1249 | } |
| 1250 | #endif |
| 1251 | |
| 1252 | allsigs(); |
| 1253 | |
| 1254 | ystatus=lines-2; |
| 1255 | yinput=lines-1; |
| 1256 | |
| 1257 | if (lines>255) barf("Screen too big"); |
| 1258 | if (ystatus<=2 || cols<20) barf("Screen too small"); |
| 1259 | |
| 1260 | statusline=(unsigned char *)malloc(MAX_COLS); |
| 1261 | writebuf=(unsigned char *)malloc(20*BUF_SIZE); |
| 1262 | strcpy(tmpstr, " "); |
| 1263 | for (i=1; i<argc; i++) |
| 1264 | if (strlen(tmpstr)+strlen(argv[i])<cols-1) { |
| 1265 | strcat(tmpstr, argv[i]); |
| 1266 | strcat(tmpstr, " "); |
| 1267 | } |
| 1268 | setstatus(tmpstr); |
| 1269 | |
| 1270 | if (dispmode==0) wherey=ystatus-1; |
| 1271 | clearscreen(); |
| 1272 | displaystatus(); |
| 1273 | |
| 1274 | histoldest=histcurrent=(struct histinfo *)malloc(sizeof (struct histinfo)); |
| 1275 | input=histcurrent->string; |
| 1276 | histcurrent->prev=histcurrent->next=histcurrent; |
| 1277 | histlines=1; |
| 1278 | plen=strlen(prompt); |
| 1279 | inputlast=inputcursor=plen; |
| 1280 | strcpy(input, prompt); |
| 1281 | ofsredisplay(0); |
| 1282 | *protcmd='\0'; |
| 1283 | *o_buffer='\0'; |
| 1284 | cursorwhere=1; |
| 1285 | |
| 1286 | FD_ZERO(&ready); |
| 1287 | FD_SET(ttyfd, &ready); |
| 1288 | FD_SET(readfd, &ready); |
| 1289 | FD_SET(errfd, &ready); |
| 1290 | |
| 1291 | while(1) { |
| 1292 | result=ready; |
| 1293 | if (select(64, &result, NULL, NULL, NULL)<=0) |
| 1294 | if (errno==EINTR) continue; |
| 1295 | else cleanupexit(1, "select error"); |
| 1296 | |
| 1297 | if (FD_ISSET(readfd, &result)) |
| 1298 | if ((rc=read(readfd, readbuf, BUF_SIZE))>0) |
| 1299 | doprogramline(readbuf, rc); |
| 1300 | else |
| 1301 | cleanupexit(1, "program terminated"); |
| 1302 | if (FD_ISSET(errfd, &result)) |
| 1303 | if ((rc=read(errfd, readbuf, BUF_SIZE))>0) |
| 1304 | doprogramline(readbuf, rc); |
| 1305 | else |
| 1306 | cleanupexit(1, "program terminated"); |
| 1307 | if (FD_ISSET(ttyfd, &result)) |
| 1308 | if ((rrc=read(0, readbuf, BUF_SIZE))>0) |
| 1309 | for (t=readbuf; rrc>0; rrc--) dokbdchar(*(t++)); |
| 1310 | else |
| 1311 | cleanupexit(1, "read error from keyboard"); |
| 1312 | } |
| 1313 | } |
| 1314 | |
projects / urisagit/Stem.git / blame