0398bb0d |
1 | /* -*-c-*- |
2 | * |
aa1ca0ec |
3 | * $Id: bascat.c,v 1.5 1999/11/25 01:08:57 mdw Exp $ |
0398bb0d |
4 | * |
5 | * Display BBC BASIC programs more or less anywhere |
6 | * |
7 | * (c) 1996, 1997 Matthew Wilcox and Mark Wooding |
8 | */ |
9 | |
10 | /*----- Licensing notice --------------------------------------------------* |
11 | * |
12 | * This file is part of Bascat. |
13 | * |
14 | * Bascat is free software; you can redistribute it and/or modify it |
15 | * under the terms of the GNU Library General Public License as |
16 | * published by the Free Software Foundation; either version 2 of the |
17 | * License, or (at your option) any later version. |
18 | * |
19 | * Bascat is distributed in the hope that it will be useful, but |
20 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
22 | * GNU Library General Public License for more details. |
23 | * |
24 | * You should have received a copy of the GNU General Public License |
25 | * along with Bascat; if not, write to the Free Software Foundation, |
26 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
27 | */ |
28 | |
29 | /*----- Revision history --------------------------------------------------* |
30 | * |
31 | * $Log: bascat.c,v $ |
aa1ca0ec |
32 | * Revision 1.5 1999/11/25 01:08:57 mdw |
33 | * Fix decoding of line numbers. |
34 | * |
992dc059 |
35 | * Revision 1.4 1999/10/28 10:42:23 mdw |
36 | * More minor twiddling. |
37 | * |
b98146e0 |
38 | * Revision 1.3 1999/10/28 10:18:17 mdw |
39 | * Minor name changes for new coding standards. |
40 | * |
af9da5bb |
41 | * Revision 1.2 1998/06/26 11:29:28 mdw |
42 | * Added support for line-numbers. |
43 | * |
0398bb0d |
44 | * Revision 1.1 1998/03/16 15:21:37 mdw |
45 | * Files placed under CVS control. |
46 | * |
47 | * Revision 1.1 1997/07/23 01:19:33 mdw |
48 | * Initial revision |
49 | * |
50 | */ |
51 | |
52 | /*----- Header files ------------------------------------------------------*/ |
53 | |
54 | /* --- ANSI library headers --- */ |
55 | |
56 | #include <ctype.h> |
57 | #include <errno.h> |
58 | #include <signal.h> |
59 | #include <stdio.h> |
60 | #include <stdlib.h> |
61 | #include <string.h> |
62 | |
63 | /* --- Operating system specific headers --- */ |
64 | |
65 | #ifdef HAVE_LIBTERMCAP |
66 | # include <termcap.h> |
67 | #endif |
68 | #include <unistd.h> |
69 | |
70 | /* --- Private headers --- */ |
71 | |
72 | #include "mdwopt.h" |
73 | |
74 | /*----- Version information -----------------------------------------------*/ |
75 | |
76 | #ifndef NDEBUG |
77 | # define D(x) x |
78 | #else |
79 | # define D(x) |
80 | #endif |
81 | |
82 | /*----- Tokenisation tables -----------------------------------------------* |
83 | * |
84 | * These tables are from the BBC BASIC guide. Additional verification |
85 | * carried out on an A440 with RISC OS 3.1 |
86 | */ |
87 | |
992dc059 |
88 | static const char *tok_base[] = { |
0398bb0d |
89 | "OTHERWISE", |
90 | "AND", "DIV", "EOR", "MOD", "OR", "ERROR", "LINE", "OFF", |
91 | "STEP", "SPC", "TAB(", "ELSE", "THEN", "*", "OPENIN", "PTR", |
92 | "PAGE", "TIME", "LOMEM", "HIMEM", "ABS", "ACS", "ADVAL", "ASC", |
93 | "ASN", "ATN", "BGET", "COS", "COUNT", "DEG", "ERL", "ERR", |
94 | "EVAL", "EXP", "EXT", "FALSE", "FN", "GET", "INKEY", "INSTR(", |
95 | "INT", "LEN", "LN", "LOG", "NOT", "OPENUP", "OPENOUT", "PI", |
96 | "POINT(", "POS", "RAD", "RND", "SGN", "SIN", "SQR", "TAN", |
97 | "TO", "TRUE", "USR", "VAL", "VPOS", "CHR$", "GET$", "INKEY$", |
98 | "LEFT$(", "MID$(", "RIGHT$(", "STR$", "STRING$(", "EOF", "*", "*", |
99 | "*", "WHEN", "OF", "ENDCASE", "ELSE", "ENDIF", "ENDWHILE", "PTR", |
100 | "PAGE", "TIME", "LOMEM", "HIMEM", "SOUND", "BPUT", "CALL", "CHAIN", |
101 | "CLEAR", "CLOSE", "CLG", "CLS", "DATA", "DEF", "DIM", "DRAW", |
102 | "END", "ENDPROC", "ENVELOPE", "FOR", "GOSUB", "GOTO", "GCOL", "IF", |
103 | "INPUT", "LET", "LOCAL", "MODE", "MOVE", "NEXT", "ON", "VDU", |
104 | "PLOT", "PRINT", "PROC", "READ", "REM", "REPEAT", "REPORT", "RESTORE", |
105 | "RETURN", "RUN", "STOP", "COLOUR", "TRACE", "UNTIL", "WIDTH", "OSCLI" |
106 | }; |
107 | |
992dc059 |
108 | static const char *tok_c6[] = { |
0398bb0d |
109 | "SUM", "BEAT" |
110 | }; |
111 | |
992dc059 |
112 | static const char *tok_c7[] = { |
0398bb0d |
113 | "APPEND", "AUTO", |
114 | "CRUNCH", "DELETE", "EDIT", "HELP", "LIST", "LOAD", "LVAR", "NEW", |
115 | "OLD", "RENUMBER", "SAVE", "TEXTLOAD", "TEXTSAVE", "TWIN", "TWINO", |
116 | "INSTALL" |
117 | }; |
118 | |
992dc059 |
119 | static const char *tok_c8[] = { |
0398bb0d |
120 | "CASE", "CIRCLE", |
121 | "FILL", "ORIGIN", "POINT", "RECTANGLE", "SWAP", "WHILE", "WAIT", "MOUSE", |
122 | "QUIT", "SYS", "INSTALL", "LIBRARY", "TINT", "ELLIPSE", "BEATS", "TEMPO", |
123 | "VOICES", "VOICE", "STEREO", "OVERLAY" |
124 | }; |
125 | |
126 | #define ITEMS(array) (sizeof(array) / sizeof((array)[0])) |
127 | |
128 | /*----- Static variables --------------------------------------------------*/ |
129 | |
130 | enum { |
131 | s_keyword, /* Expecting a keyword next */ |
132 | s_normal, /* Normal state, reading input */ |
133 | s_comment, /* In a command (or literal *cmd) */ |
134 | s_quote, /* Inside a quoted string */ |
135 | s_c6, s_c7, s_c8, /* Various shift states */ |
af9da5bb |
136 | s_linex, s_liney, s_linez, /* Line number states */ |
0398bb0d |
137 | s_dummy |
138 | }; |
139 | |
b98146e0 |
140 | static int state = s_normal; /* Current detokenisation state */ |
141 | static unsigned int lineno; /* Line number */ |
0398bb0d |
142 | |
143 | enum { |
144 | f_highlight = 1, /* Highlight keywords and things */ |
145 | f_linenumbers = 2, /* Display linenumbers on left */ |
146 | f_tty = 4, /* We're writing to TTY (or pager) */ |
147 | f_less = 8, /* We're piping through `less' */ |
148 | f_dummy |
149 | }; |
150 | |
b98146e0 |
151 | static int flags; /* Various options flags */ |
0398bb0d |
152 | |
153 | #ifdef HAVE_LIBTERMCAP |
b98146e0 |
154 | static char termcap[2048]; /* Terminal capabilities buffer */ |
0398bb0d |
155 | #endif |
156 | |
b98146e0 |
157 | static char *pager = 0; /* Pointer to pager to use */ |
0398bb0d |
158 | |
159 | /*----- Main code ---------------------------------------------------------*/ |
160 | |
161 | /* --- @die@ --- * |
162 | * |
163 | * Arguments: @char *p@ = pointer to a string |
164 | * |
165 | * Returns: 1 |
166 | * |
167 | * Use: Reports an error to the user and falls over flat on its face. |
168 | */ |
169 | |
170 | static int die(const char *p) |
171 | { |
172 | fprintf(stderr, "%s: %s\n", optprog, p); |
173 | return (1); |
174 | } |
175 | |
b98146e0 |
176 | /* --- @keyword@ --- * |
0398bb0d |
177 | * |
178 | * Arguments: @char *s@ = pointer to keyword string |
179 | * @FILE *fp@ = stream to write onto |
180 | * |
181 | * Returns: -- |
182 | * |
183 | * Use: Displays a keyword in a nice way. There's some nasty hacking |
184 | * here to make GNU's `less' work properly. `more' appears to |
185 | * cope with highlighting codes OK, so that's fine. `less' |
186 | * prefers it if we attempt to `overstrike' the bolded |
187 | * characters. What fun... |
188 | */ |
189 | |
b98146e0 |
190 | static void keyword(const char *s, FILE *fp) |
0398bb0d |
191 | { |
192 | #ifdef HAVE_LIBTERMCAP |
b98146e0 |
193 | if ((~flags & (f_less | f_highlight)) == 0) { |
0398bb0d |
194 | while (*s) { |
195 | putc(*s, fp); |
b98146e0 |
196 | putc('\b', fp); |
0398bb0d |
197 | putc(*s, fp); |
198 | s++; |
199 | } |
200 | } else { |
201 | static char buff[24]; |
202 | static char *hs, *he, *p = buff; |
203 | |
204 | if (!hs) { |
b98146e0 |
205 | if (flags & f_highlight) { |
0398bb0d |
206 | hs = tgetstr("md", &p); |
207 | he = tgetstr("me", &p); |
208 | } else |
209 | hs = he = ""; |
210 | } |
211 | fputs(hs, fp); |
212 | fputs(s, fp); |
213 | fputs(he, fp); |
214 | } |
215 | #else |
216 | fputs(s, fp); |
217 | #endif |
218 | } |
219 | |
b98146e0 |
220 | /* --- @mbtok@ --- * |
0398bb0d |
221 | * |
222 | * Arguments: @int byte@ = the current byte |
223 | * @const char *t[]@ = pointer to token table |
224 | * @int n@ = number of items in token table |
225 | * @FILE *fp@ = stream to write onto |
226 | * |
227 | * Returns: 0 if everything's OK |
228 | * |
229 | * Use: Decodes multibyte tokens. |
230 | */ |
231 | |
aa1ca0ec |
232 | static int mbtok(int byte, const char *t[], int n, FILE *fp) |
0398bb0d |
233 | { |
234 | byte -= 0x8E; |
235 | if (byte >= n) |
236 | return (die("Bad program: invalid multibyte token")); |
b98146e0 |
237 | keyword(t[byte], fp); |
238 | state = s_normal; |
0398bb0d |
239 | return (0); |
240 | } |
241 | |
b98146e0 |
242 | /* --- @decode@ --- * |
0398bb0d |
243 | * |
244 | * Arguments: @int byte@ = byte to decode |
245 | * @FILE *fp@ = stream to write onto |
246 | * |
247 | * Returns: 0 if everything's going OK |
248 | * |
249 | * Use: Decodes a byte, changing states as necessary. |
250 | */ |
251 | |
aa1ca0ec |
252 | static int decode(int byte, FILE *fp) |
0398bb0d |
253 | { |
b98146e0 |
254 | switch (state) { |
af9da5bb |
255 | |
256 | /* --- Tokenised states --- */ |
257 | |
0398bb0d |
258 | case s_keyword: |
259 | if (byte == '*') |
b98146e0 |
260 | state = s_comment; |
0398bb0d |
261 | else |
b98146e0 |
262 | state = s_normal; |
0398bb0d |
263 | /* Fall through here */ |
af9da5bb |
264 | |
0398bb0d |
265 | case s_normal: |
266 | if (byte >= 0x7F) { |
267 | switch (byte) { |
268 | case 0xC6: |
b98146e0 |
269 | state = s_c6; |
0398bb0d |
270 | break; |
271 | case 0xC7: |
b98146e0 |
272 | state = s_c7; |
0398bb0d |
273 | break; |
274 | case 0xC8: |
b98146e0 |
275 | state = s_c8; |
0398bb0d |
276 | break; |
af9da5bb |
277 | case 0x8D: |
b98146e0 |
278 | state = s_linex; |
af9da5bb |
279 | break; |
0398bb0d |
280 | case 0x8B: /* ELSE */ |
281 | case 0x8C: /* THEN */ |
282 | case 0xF5: /* REPEAT (a funny one) */ |
b98146e0 |
283 | state = s_keyword; |
af9da5bb |
284 | goto keyword; |
0398bb0d |
285 | break; |
286 | case 0xDC: /* DATA */ |
287 | case 0xF4: /* REM */ |
b98146e0 |
288 | state = s_comment; |
0398bb0d |
289 | /* Fall through here */ |
290 | default: |
af9da5bb |
291 | keyword: |
992dc059 |
292 | keyword(tok_base[byte - 0x7F], fp); |
0398bb0d |
293 | break; |
294 | } |
295 | } else { |
296 | if (byte == '"') |
b98146e0 |
297 | state = s_quote; |
0398bb0d |
298 | fputc(byte, fp); |
299 | } |
300 | break; |
af9da5bb |
301 | |
302 | /* --- Non-tokenised states --- */ |
303 | |
0398bb0d |
304 | case s_quote: |
305 | if (byte == '"') |
b98146e0 |
306 | state = s_normal; |
0398bb0d |
307 | /* Fall through here */ |
af9da5bb |
308 | |
0398bb0d |
309 | case s_comment: |
310 | fputc(byte, fp); |
311 | break; |
af9da5bb |
312 | |
313 | /* --- Double-byte token states --- */ |
314 | |
0398bb0d |
315 | case s_c6: |
992dc059 |
316 | return (mbtok(byte, tok_c6, ITEMS(tok_c6), fp)); |
0398bb0d |
317 | break; |
af9da5bb |
318 | |
0398bb0d |
319 | case s_c7: |
992dc059 |
320 | return (mbtok(byte, tok_c7, ITEMS(tok_c7), fp)); |
0398bb0d |
321 | break; |
af9da5bb |
322 | |
0398bb0d |
323 | case s_c8: |
992dc059 |
324 | return (mbtok(byte, tok_c8, ITEMS(tok_c8), fp)); |
0398bb0d |
325 | break; |
af9da5bb |
326 | |
327 | /* --- Encoded line number states --- */ |
328 | |
329 | case s_linex: |
aa1ca0ec |
330 | byte ^= 0x54; |
331 | lineno = (((byte & 0x30) << 2) | |
332 | ((byte & 0x0c) << 12) | |
333 | ((byte & 0x03) << 16)); |
b98146e0 |
334 | state++; |
af9da5bb |
335 | break; |
336 | |
337 | case s_liney: |
aa1ca0ec |
338 | lineno |= byte & 0x3f; |
b98146e0 |
339 | state++; |
af9da5bb |
340 | break; |
341 | |
342 | case s_linez: |
aa1ca0ec |
343 | lineno |= (byte & 0x3f) << 8; |
b98146e0 |
344 | fprintf(fp, "%u", lineno); |
345 | state = s_normal; |
af9da5bb |
346 | break; |
347 | |
0398bb0d |
348 | } |
349 | return (0); |
350 | } |
351 | |
b98146e0 |
352 | /* --- @line@ --- * |
0398bb0d |
353 | * |
354 | * Arguments: @FILE *in@ = input stream to read |
355 | * @FILE *out@ = output stream to write |
356 | * |
357 | * Returns: Zero if there's another line after this one. |
358 | * |
359 | * Use: Decodes a BASIC line into stuff to be written. |
360 | */ |
361 | |
b98146e0 |
362 | static int line(FILE *in, FILE *out) |
0398bb0d |
363 | { |
364 | /* --- Read the line number --- */ |
365 | |
366 | { |
367 | int a, b; |
368 | |
369 | a = getc(in); |
370 | D( fprintf(stderr, "ln_0 == %i\n", a); ) |
371 | if (a == EOF) |
372 | goto eof; |
373 | if (a == 0xFF) |
374 | return (1); |
375 | |
376 | b = getc(in); |
377 | D( fprintf(stderr, "ln_1 == %i\n", b); ) |
378 | if (b == EOF) |
379 | goto eof; |
380 | |
b98146e0 |
381 | if (flags & f_linenumbers) |
0398bb0d |
382 | fprintf(out, "%5i", (a << 8) + b); |
383 | } |
384 | |
385 | { |
386 | int len; |
387 | int byte; |
388 | |
389 | len = getc(in); |
390 | D( fprintf(stderr, "linelen == %i\n", len); ) |
391 | if (len == EOF) |
392 | goto eof; |
393 | len -= 4; |
394 | |
aa1ca0ec |
395 | state = s_keyword; |
0398bb0d |
396 | while (len) { |
397 | byte = getc(in); |
af9da5bb |
398 | D( fprintf(stderr, "state == %i, byte == %i\n", |
b98146e0 |
399 | state, byte); ) |
0398bb0d |
400 | if (byte == EOF) |
401 | goto eof; |
b98146e0 |
402 | decode(byte, out); |
0398bb0d |
403 | len--; |
404 | } |
405 | putc('\n', out); |
406 | |
407 | byte = getc(in); |
408 | D( fprintf(stderr, "eol == %i\n", byte); ) |
409 | if (byte == EOF) |
410 | goto eof; |
411 | else if (byte != 0x0D) |
412 | return (die("Bad program: expected end-of-line delimiter")); |
413 | } |
414 | |
415 | return (0); |
416 | |
417 | eof: |
418 | return (die("Bad program: unexpected end-of-file")); |
419 | } |
420 | |
b98146e0 |
421 | /* --- @file@ --- * |
0398bb0d |
422 | * |
423 | * Arguments: @FILE *in@ = the input stream |
424 | * @FILE *out@ = the output stream |
425 | * |
426 | * Returns: -- |
427 | * |
428 | * Use: Decodes an entire file. |
429 | */ |
430 | |
b98146e0 |
431 | static void file(FILE *in, FILE *out) |
0398bb0d |
432 | { |
433 | int byte; |
434 | |
435 | /* --- Check for the inital newline char --- */ |
436 | |
437 | byte = getc(in); |
438 | if (byte != 0x0D) |
439 | die("Bad program: doesn't start with a newline"); |
440 | |
441 | /* --- Now read the lines in one by one --- */ |
442 | |
b98146e0 |
443 | while (!line(in, out)) ; |
0398bb0d |
444 | |
445 | /* --- Check that we're really at end-of-file --- */ |
446 | |
447 | byte = getc(in); |
448 | if (byte != EOF) |
449 | die("Found data after end of program"); |
450 | } |
451 | |
992dc059 |
452 | /* --- @sig_pipe@ --- * |
0398bb0d |
453 | * |
454 | * Arguments: @int s@ = signal number |
455 | * |
456 | * Returns: Doesn't |
457 | * |
458 | * Use: Handles SIGPIPE signals, and gracefully kills the program. |
459 | */ |
460 | |
992dc059 |
461 | static void sig_pipe(int s) |
0398bb0d |
462 | { |
463 | (void) s; |
464 | exit(0); /* Gracefully, oh yes */ |
465 | } |
466 | |
b98146e0 |
467 | /* --- @options@ --- * |
0398bb0d |
468 | * |
469 | * Arguments: @int c@ = number of arguments |
470 | * @char *v[]@ = pointer to arguments |
471 | * @char *s@ = pointer to short options |
472 | * @struct option *o@ = pointer to long options |
473 | * |
474 | * Returns: -- |
475 | * |
476 | * Use: Parses lots of arguments. |
477 | */ |
478 | |
b98146e0 |
479 | static void options(int c, char *v[], const char *s, |
0398bb0d |
480 | const struct option *o) |
481 | { |
482 | int i; |
483 | |
484 | for (;;) { |
b98146e0 |
485 | i = mdwopt(c, v, s, o, 0, 0, OPTF_NEGATION | OPTF_ENVVAR); |
0398bb0d |
486 | if (i == -1) |
487 | break; |
488 | |
489 | switch (i) { |
490 | case 'v': |
491 | case 'h': |
b98146e0 |
492 | printf("%s version " VERSION "\n", optprog); |
0398bb0d |
493 | if (i == 'v') |
494 | exit(0); |
495 | printf("\n" |
496 | "%s [-hv] [-n|+n] [-l|+l] [-p PAGER] [file...]\n" |
497 | "\n" |
498 | "Types BBC BASIC programs in a readable way. Options " |
499 | "currently supported are as\n" |
500 | "follows:\n" |
501 | "\n" |
502 | "-h, --help: Displays this evil help message\n" |
503 | "-v, --version: Displays the current version number\n" |
504 | "-n, --line-numbers: Displays line numbers for each line\n" |
505 | "-l, --highlight: Attempts to highlight keywords\n" |
506 | "-p, --pager=PAGER: Sets pager to use (default $PAGER)\n" |
507 | "\n" |
508 | "Prefix long options with `no-' to cancel them. Use `+' to " |
509 | "cancel short options.\n" |
510 | "Options can also be placed in the `BASCAT' environment " |
511 | "variable, if you don't\n" |
512 | "like the standard settings.\n", |
513 | optprog); |
514 | exit(0); |
515 | break; |
516 | case 'n': |
b98146e0 |
517 | flags |= f_linenumbers; |
0398bb0d |
518 | break; |
b98146e0 |
519 | case 'n' | OPTF_NEGATED: |
520 | flags &= ~f_linenumbers; |
0398bb0d |
521 | break; |
522 | case 'l': |
b98146e0 |
523 | flags |= f_highlight; |
0398bb0d |
524 | break; |
b98146e0 |
525 | case 'l' | OPTF_NEGATED: |
526 | flags &= ~f_highlight; |
0398bb0d |
527 | break; |
528 | case 'p': |
b98146e0 |
529 | pager = optarg; |
0398bb0d |
530 | break; |
531 | } |
532 | } |
533 | } |
534 | |
535 | /* --- @main@ --- * |
536 | * |
537 | * Arguments: @int argc@ = number of arguments |
538 | * @char *argc[]@ = pointer to what the arguments are |
539 | * |
540 | * Returns: 0 if it all worked |
541 | * |
542 | * Use: Displays BASIC programs. |
543 | */ |
544 | |
545 | int main(int argc, char *argv[]) |
546 | { |
547 | static struct option opts[] = { |
b98146e0 |
548 | { "help", 0, 0, 'h' }, |
549 | { "version", 0, 0, 'v' }, |
550 | { "line-numbers", OPTF_NEGATE, 0, 'n' }, |
551 | { "highlight", OPTF_NEGATE, 0, 'l' }, |
552 | { "pager", OPTF_ARGREQ, 0, 'p' }, |
553 | { 0, 0, 0, 0 } |
0398bb0d |
554 | }; |
555 | static char *shortopts = "hvn+l+p:"; |
556 | |
557 | /* --- Parse the command line options --- */ |
558 | |
b98146e0 |
559 | options(argc, argv, shortopts, opts); |
0398bb0d |
560 | |
561 | /* --- Now do the job --- */ |
562 | |
563 | if (optind == argc && isatty(0)) { |
564 | fprintf(stderr, |
565 | "%s: No filenames given, and standard input is a tty\n" |
566 | "To force reading from stdin, use `%s -'. For help, type " |
567 | "`%s --help'.\n", |
568 | optprog, optprog, optprog); |
569 | exit(0); |
570 | } |
571 | |
572 | #ifdef HAVE_LIBTERMCAP |
b98146e0 |
573 | if (flags & f_highlight) |
574 | tgetent(termcap, getenv("TERM")); |
0398bb0d |
575 | #endif |
576 | |
577 | { |
578 | FILE *in; |
579 | FILE *out; |
580 | |
581 | /* --- If output is to a terminal, try paging --- * |
582 | * |
583 | * All programs which spew text should do this ;-) |
584 | */ |
585 | |
586 | if (isatty(1)) { |
b98146e0 |
587 | if (!pager) |
588 | pager = getenv("PAGER"); |
589 | if (!pager) |
590 | pager = PAGER; /* Worth a try */ |
591 | if (strstr(pager, "less")) |
592 | flags |= f_less; /* HACK!!! */ |
593 | out = popen(pager, "w"); |
0398bb0d |
594 | if (!out) |
595 | out = stdout; |
596 | else { |
b98146e0 |
597 | flags |= f_tty; |
992dc059 |
598 | signal(SIGPIPE, sig_pipe); |
0398bb0d |
599 | } |
600 | } else |
601 | out = stdout; |
602 | |
603 | /* --- Now go through all the files --- */ |
604 | |
605 | if (optind == argc) |
b98146e0 |
606 | file(stdin, out); |
0398bb0d |
607 | else |
608 | while (optind < argc) { |
609 | if (strcmp(argv[optind], "-") == 0) |
b98146e0 |
610 | file(stdin, out); |
0398bb0d |
611 | else { |
612 | in = fopen(argv[optind], "rb"); |
613 | if (!in) { |
614 | fprintf(stderr, |
615 | "%s: Couldn't open input file: %s\n", |
616 | optprog, strerror(errno)); |
617 | } else { |
b98146e0 |
618 | file(in, out); |
0398bb0d |
619 | fclose(in); |
620 | } |
621 | } |
622 | optind++; |
623 | } |
b98146e0 |
624 | if (flags & f_tty) |
0398bb0d |
625 | pclose(out); |
626 | } |
627 | |
628 | return (0); |
629 | } |
630 | |
631 | /*----- That's all, folks -------------------------------------------------*/ |