Annotation of src/usr.bin/indent/io.c, Revision 1.7
1.7 ! millert 1: /* $OpenBSD: io.c,v 1.6 2002/10/04 15:27:21 mickey Exp $ */
1.2 deraadt 2:
1.1 deraadt 3: /*
4: * Copyright (c) 1985 Sun Microsystems, Inc.
1.4 pjanzen 5: * Copyright (c) 1980, 1993 The Regents of the University of California.
1.1 deraadt 6: * Copyright (c) 1976 Board of Trustees of the University of Illinois.
7: * All rights reserved.
8: *
9: * Redistribution and use in source and binary forms, with or without
10: * modification, are permitted provided that the following conditions
11: * are met:
12: * 1. Redistributions of source code must retain the above copyright
13: * notice, this list of conditions and the following disclaimer.
14: * 2. Redistributions in binary form must reproduce the above copyright
15: * notice, this list of conditions and the following disclaimer in the
16: * documentation and/or other materials provided with the distribution.
1.7 ! millert 17: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 18: * may be used to endorse or promote products derived from this software
19: * without specific prior written permission.
20: *
21: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31: * SUCH DAMAGE.
32: */
33:
34: #ifndef lint
1.4 pjanzen 35: /*static char sccsid[] = "@(#)io.c 8.1 (Berkeley) 6/6/93";*/
1.7 ! millert 36: static char rcsid[] = "$OpenBSD: io.c,v 1.6 2002/10/04 15:27:21 mickey Exp $";
1.1 deraadt 37: #endif /* not lint */
38:
39: #include <stdio.h>
40: #include <ctype.h>
41: #include <stdlib.h>
42: #include <string.h>
1.5 millert 43: #include <stdarg.h>
1.3 mickey 44: #include <err.h>
1.1 deraadt 45: #include "indent_globs.h"
46:
47:
48: int comment_open;
1.4 pjanzen 49: static int paren_target;
1.1 deraadt 50:
1.3 mickey 51: void
1.1 deraadt 52: dump_line()
53: { /* dump_line is the routine that actually
54: * effects the printing of the new source. It
55: * prints the label section, followed by the
56: * code section with the appropriate nesting
57: * level, followed by any comments */
1.4 pjanzen 58: int cur_col, target_col;
59: static int not_first_line;
1.1 deraadt 60:
61: if (ps.procname[0]) {
62: if (troff) {
63: if (comment_open) {
64: comment_open = 0;
65: fprintf(output, ".*/\n");
66: }
67: fprintf(output, ".Pr \"%s\"\n", ps.procname);
68: }
69: ps.ind_level = 0;
70: ps.procname[0] = 0;
71: }
72: if (s_code == e_code && s_lab == e_lab && s_com == e_com) {
73: if (suppress_blanklines > 0)
74: suppress_blanklines--;
75: else {
76: ps.bl_line = true;
77: n_real_blanklines++;
78: }
79: }
80: else if (!inhibit_formatting) {
81: suppress_blanklines = 0;
82: ps.bl_line = false;
1.4 pjanzen 83: if (prefix_blankline_requested && not_first_line) {
1.1 deraadt 84: if (swallow_optional_blanklines) {
85: if (n_real_blanklines == 1)
86: n_real_blanklines = 0;
1.4 pjanzen 87: } else {
1.1 deraadt 88: if (n_real_blanklines == 0)
89: n_real_blanklines = 1;
90: }
1.4 pjanzen 91: }
1.1 deraadt 92: while (--n_real_blanklines >= 0)
93: putc('\n', output);
94: n_real_blanklines = 0;
95: if (ps.ind_level == 0)
96: ps.ind_stmt = 0; /* this is a class A kludge. dont do
97: * additional statement indentation if we are
98: * at bracket level 0 */
99:
100: if (e_lab != s_lab || e_code != s_code)
101: ++code_lines; /* keep count of lines with code */
102:
103:
104: if (e_lab != s_lab) { /* print lab, if any */
105: if (comment_open) {
106: comment_open = 0;
107: fprintf(output, ".*/\n");
108: }
109: while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t'))
110: e_lab--;
111: cur_col = pad_output(1, compute_label_target());
112: if (s_lab[0] == '#' && (strncmp(s_lab, "#else", 5) == 0
113: || strncmp(s_lab, "#endif", 6) == 0)) {
1.4 pjanzen 114: char *s = s_lab;
115: if (e_lab[-1] == '\n')
116: e_lab--;
117: do
118: putc(*s++, output);
1.1 deraadt 119: while (s < e_lab && 'a' <= *s && *s<='z');
120: while ((*s == ' ' || *s == '\t') && s < e_lab)
121: s++;
122: if (s < e_lab)
123: fprintf(output, s[0]=='/' && s[1]=='*' ? "\t%.*s" : "\t/* %.*s */",
1.4 pjanzen 124: (int)(e_lab - s), s);
1.1 deraadt 125: }
1.4 pjanzen 126: else fprintf(output, "%.*s", (int)(e_lab - s_lab), s_lab);
1.1 deraadt 127: cur_col = count_spaces(cur_col, s_lab);
128: }
129: else
130: cur_col = 1; /* there is no label section */
131:
132: ps.pcase = false;
133:
134: if (s_code != e_code) { /* print code section, if any */
1.4 pjanzen 135: char *p;
1.1 deraadt 136:
137: if (comment_open) {
138: comment_open = 0;
139: fprintf(output, ".*/\n");
140: }
141: target_col = compute_code_target();
142: {
1.4 pjanzen 143: int i;
1.1 deraadt 144:
145: for (i = 0; i < ps.p_l_follow; i++)
146: if (ps.paren_indents[i] >= 0)
147: ps.paren_indents[i] = -(ps.paren_indents[i] + target_col);
148: }
149: cur_col = pad_output(cur_col, target_col);
150: for (p = s_code; p < e_code; p++)
151: if (*p == (char) 0200)
152: fprintf(output, "%d", target_col * 7);
153: else
154: putc(*p, output);
155: cur_col = count_spaces(cur_col, s_code);
156: }
1.4 pjanzen 157: if (s_com != e_com) {
1.1 deraadt 158: if (troff) {
1.4 pjanzen 159: int all_here = 0;
160: char *p;
1.1 deraadt 161:
162: if (e_com[-1] == '/' && e_com[-2] == '*')
163: e_com -= 2, all_here++;
164: while (e_com > s_com && e_com[-1] == ' ')
165: e_com--;
166: *e_com = 0;
167: p = s_com;
168: while (*p == ' ')
169: p++;
170: if (p[0] == '/' && p[1] == '*')
171: p += 2, all_here++;
172: else if (p[0] == '*')
173: p += p[1] == '/' ? 2 : 1;
174: while (*p == ' ')
175: p++;
176: if (*p == 0)
177: goto inhibit_newline;
178: if (comment_open < 2 && ps.box_com) {
179: comment_open = 0;
180: fprintf(output, ".*/\n");
181: }
182: if (comment_open == 0) {
183: if ('a' <= *p && *p <= 'z')
184: *p = *p + 'A' - 'a';
185: if (e_com - p < 50 && all_here == 2) {
1.4 pjanzen 186: char *follow = p;
1.1 deraadt 187: fprintf(output, "\n.nr C! \\w\1");
188: while (follow < e_com) {
189: switch (*follow) {
190: case '\n':
191: putc(' ', output);
192: case 1:
193: break;
194: case '\\':
195: putc('\\', output);
196: default:
197: putc(*follow, output);
198: }
199: follow++;
200: }
201: putc(1, output);
202: }
203: fprintf(output, "\n./* %dp %d %dp\n",
204: ps.com_col * 7,
205: (s_code != e_code || s_lab != e_lab) - ps.box_com,
206: target_col * 7);
207: }
208: comment_open = 1 + ps.box_com;
209: while (*p) {
210: if (*p == BACKSLASH)
211: putc(BACKSLASH, output);
212: putc(*p++, output);
213: }
1.4 pjanzen 214: } else { /* print comment, if any */
215: int target = ps.com_col;
216: char *com_st = s_com;
1.1 deraadt 217:
218: target += ps.comment_delta;
219: while (*com_st == '\t')
220: com_st++, target += 8; /* ? */
221: while (target <= 0)
222: if (*com_st == ' ')
223: target++, com_st++;
224: else if (*com_st == '\t')
225: target = ((target - 1) & ~7) + 9, com_st++;
226: else
227: target = 1;
228: if (cur_col > target) { /* if comment cant fit on this line,
229: * put it on next line */
230: putc('\n', output);
231: cur_col = 1;
232: ++ps.out_lines;
233: }
234: while (e_com > com_st && isspace(e_com[-1]))
235: e_com--;
236: cur_col = pad_output(cur_col, target);
237: if (!ps.box_com) {
1.4 pjanzen 238: if (star_comment_cont && (com_st[1] != '*' || e_com <= com_st + 1)) {
1.1 deraadt 239: if (com_st[1] == ' ' && com_st[0] == ' ' && e_com > com_st + 1)
240: com_st[1] = '*';
241: else
242: fwrite(" * ", com_st[0] == '\t' ? 2 : com_st[0] == '*' ? 1 : 3, 1, output);
1.4 pjanzen 243: }
1.1 deraadt 244: }
245: fwrite(com_st, e_com - com_st, 1, output);
246: ps.comment_delta = ps.n_comment_delta;
247: cur_col = count_spaces(cur_col, com_st);
248: ++ps.com_lines; /* count lines with comments */
249: }
1.4 pjanzen 250: }
1.1 deraadt 251: if (ps.use_ff)
252: putc('\014', output);
253: else
254: putc('\n', output);
255: inhibit_newline:
256: ++ps.out_lines;
257: if (ps.just_saw_decl == 1 && blanklines_after_declarations) {
258: prefix_blankline_requested = 1;
259: ps.just_saw_decl = 0;
260: }
261: else
262: prefix_blankline_requested = postfix_blankline_requested;
263: postfix_blankline_requested = 0;
264: }
265: ps.decl_on_line = ps.in_decl; /* if we are in the middle of a
266: * declaration, remember that fact for
267: * proper comment indentation */
268: ps.ind_stmt = ps.in_stmt & ~ps.in_decl; /* next line should be
269: * indented if we have not
270: * completed this stmt and if
271: * we are not in the middle of
272: * a declaration */
273: ps.use_ff = false;
274: ps.dumped_decl_indent = 0;
275: *(e_lab = s_lab) = '\0'; /* reset buffers */
276: *(e_code = s_code) = '\0';
277: *(e_com = s_com) = '\0';
278: ps.ind_level = ps.i_l_follow;
279: ps.paren_level = ps.p_l_follow;
280: paren_target = -ps.paren_indents[ps.paren_level - 1];
281: not_first_line = 1;
282: return;
283: }
284:
1.3 mickey 285: int
1.1 deraadt 286: compute_code_target()
287: {
1.4 pjanzen 288: int target_col;
1.1 deraadt 289:
1.4 pjanzen 290: target_col = ps.ind_size * ps.ind_level + 1;
1.1 deraadt 291: if (ps.paren_level)
292: if (!lineup_to_parens)
293: target_col += continuation_indent * ps.paren_level;
294: else {
1.4 pjanzen 295: int w;
296: int t = paren_target;
1.1 deraadt 297:
298: if ((w = count_spaces(t, s_code) - max_col) > 0
299: && count_spaces(target_col, s_code) <= max_col) {
300: t -= w + 1;
301: if (t > target_col)
302: target_col = t;
303: }
304: else
305: target_col = t;
306: }
307: else if (ps.ind_stmt)
308: target_col += continuation_indent;
309: return target_col;
310: }
311:
1.3 mickey 312: int
1.1 deraadt 313: compute_label_target()
314: {
315: return
316: ps.pcase ? (int) (case_ind * ps.ind_size) + 1
317: : *s_lab == '#' ? 1
318: : ps.ind_size * (ps.ind_level - label_offset) + 1;
319: }
320:
321:
322: /*
323: * Copyright (C) 1976 by the Board of Trustees of the University of Illinois
324: *
325: * All rights reserved
326: *
327: *
328: * NAME: fill_buffer
329: *
330: * FUNCTION: Reads one block of input into input_buffer
331: *
332: * HISTORY: initial coding November 1976 D A Willcox of CAC 1/7/77 A
333: * Willcox of CAC Added check for switch back to partly full input
334: * buffer from temporary buffer
335: *
336: */
1.3 mickey 337: void
1.1 deraadt 338: fill_buffer()
339: { /* this routine reads stuff from the input */
1.4 pjanzen 340: char *p;
341: int i;
342: FILE *f = input;
1.1 deraadt 343:
344: if (bp_save != 0) { /* there is a partly filled input buffer left */
345: buf_ptr = bp_save; /* dont read anything, just switch buffers */
346: buf_end = be_save;
347: bp_save = be_save = 0;
348: if (buf_ptr < buf_end)
349: return; /* only return if there is really something in
350: * this buffer */
351: }
352: for (p = in_buffer;;) {
353: if (p >= in_buffer_limit) {
1.4 pjanzen 354: int size = (in_buffer_limit - in_buffer) * 2 + 10;
355: int offset = p - in_buffer;
1.1 deraadt 356: in_buffer = (char *) realloc(in_buffer, size);
1.4 pjanzen 357: if (in_buffer == NULL)
1.3 mickey 358: errx(1, "input line too long");
1.1 deraadt 359: p = in_buffer + offset;
360: in_buffer_limit = in_buffer + size - 2;
361: }
362: if ((i = getc(f)) == EOF) {
363: *p++ = ' ';
364: *p++ = '\n';
365: had_eof = true;
366: break;
367: }
368: *p++ = i;
369: if (i == '\n')
370: break;
371: }
372: buf_ptr = in_buffer;
373: buf_end = p;
374: if (p[-2] == '/' && p[-3] == '*') {
375: if (in_buffer[3] == 'I' && strncmp(in_buffer, "/**INDENT**", 11) == 0)
376: fill_buffer(); /* flush indent error message */
377: else {
378: int com = 0;
379:
380: p = in_buffer;
381: while (*p == ' ' || *p == '\t')
382: p++;
383: if (*p == '/' && p[1] == '*') {
384: p += 2;
385: while (*p == ' ' || *p == '\t')
386: p++;
387: if (p[0] == 'I' && p[1] == 'N' && p[2] == 'D' && p[3] == 'E'
388: && p[4] == 'N' && p[5] == 'T') {
389: p += 6;
390: while (*p == ' ' || *p == '\t')
391: p++;
392: if (*p == '*')
393: com = 1;
1.4 pjanzen 394: else if (*p == 'O') {
1.1 deraadt 395: if (*++p == 'N')
396: p++, com = 1;
397: else if (*p == 'F' && *++p == 'F')
398: p++, com = 2;
1.4 pjanzen 399: }
1.1 deraadt 400: while (*p == ' ' || *p == '\t')
401: p++;
402: if (p[0] == '*' && p[1] == '/' && p[2] == '\n' && com) {
403: if (s_com != e_com || s_lab != e_lab || s_code != e_code)
404: dump_line();
405: if (!(inhibit_formatting = com - 1)) {
406: n_real_blanklines = 0;
407: postfix_blankline_requested = 0;
408: prefix_blankline_requested = 0;
409: suppress_blanklines = 1;
410: }
411: }
412: }
413: }
414: }
415: }
416: if (inhibit_formatting) {
417: p = in_buffer;
418: do
419: putc(*p, output);
420: while (*p++ != '\n');
421: }
422: return;
423: }
424:
425: /*
426: * Copyright (C) 1976 by the Board of Trustees of the University of Illinois
427: *
428: * All rights reserved
429: *
430: *
431: * NAME: pad_output
432: *
433: * FUNCTION: Writes tabs and spaces to move the current column up to the desired
434: * position.
435: *
436: * ALGORITHM: Put tabs and/or blanks into pobuf, then write pobuf.
437: *
438: * PARAMETERS: current integer The current column target
439: * nteger The desired column
440: *
441: * RETURNS: Integer value of the new column. (If current >= target, no action is
442: * taken, and current is returned.
443: *
444: * GLOBALS: None
445: *
446: * CALLS: write (sys)
447: *
448: * CALLED BY: dump_line
449: *
450: * HISTORY: initial coding November 1976 D A Willcox of CAC
451: *
452: */
1.3 mickey 453: int
1.1 deraadt 454: pad_output(current, target) /* writes tabs and blanks (if necessary) to
455: * get the current output position up to the
456: * target column */
457: int current; /* the current column value */
458: int target; /* position we want it at */
459: {
1.4 pjanzen 460: int curr; /* internal column pointer */
461: int tcur;
1.1 deraadt 462:
463: if (troff)
464: fprintf(output, "\\h'|%dp'", (target - 1) * 7);
465: else {
466: if (current >= target)
467: return (current); /* line is already long enough */
468: curr = current;
469: while ((tcur = ((curr - 1) & tabmask) + tabsize + 1) <= target) {
470: putc('\t', output);
471: curr = tcur;
472: }
473: while (curr++ < target)
474: putc(' ', output); /* pad with final blanks */
475: }
476: return (target);
477: }
478:
479: /*
480: * Copyright (C) 1976 by the Board of Trustees of the University of Illinois
481: *
482: * All rights reserved
483: *
484: *
485: * NAME: count_spaces
486: *
487: * FUNCTION: Find out where printing of a given string will leave the current
488: * character position on output.
489: *
490: * ALGORITHM: Run thru input string and add appropriate values to current
491: * position.
492: *
493: * RETURNS: Integer value of position after printing "buffer" starting in column
494: * "current".
495: *
496: * HISTORY: initial coding November 1976 D A Willcox of CAC
497: *
498: */
499: int
500: count_spaces(current, buffer)
501: /*
502: * this routine figures out where the character position will be after
503: * printing the text in buffer starting at column "current"
504: */
505: int current;
506: char *buffer;
507: {
1.4 pjanzen 508: char *buf; /* used to look thru buffer */
509: int cur; /* current character counter */
1.1 deraadt 510:
511: cur = current;
512:
513: for (buf = buffer; *buf != '\0'; ++buf) {
514: switch (*buf) {
515:
516: case '\n':
517: case 014: /* form feed */
518: cur = 1;
519: break;
520:
521: case '\t':
522: cur = ((cur - 1) & tabmask) + tabsize + 1;
523: break;
524:
525: case 010: /* backspace */
526: --cur;
527: break;
528:
529: default:
530: ++cur;
531: break;
532: } /* end of switch */
533: } /* end of for loop */
534: return (cur);
535: }
536:
537: int found_err;
1.4 pjanzen 538:
1.1 deraadt 539: /* VARARGS2 */
1.3 mickey 540: void
1.4 pjanzen 541: diag(int level, char *msg, ...)
1.1 deraadt 542: {
1.5 millert 543: va_list ap;
1.4 pjanzen 544:
1.5 millert 545: va_start(ap, msg);
1.1 deraadt 546: if (level)
547: found_err = 1;
548: if (output == stdout) {
549: fprintf(stdout, "/**INDENT** %s@%d: ", level == 0 ? "Warning" : "Error", line_no);
1.4 pjanzen 550: vfprintf(stdout, msg, ap);
1.1 deraadt 551: fprintf(stdout, " */\n");
552: }
553: else {
554: fprintf(stderr, "%s@%d: ", level == 0 ? "Warning" : "Error", line_no);
1.4 pjanzen 555: vfprintf(stderr, msg, ap);
1.1 deraadt 556: fprintf(stderr, "\n");
557: }
1.4 pjanzen 558: va_end(ap);
1.1 deraadt 559: }
560:
1.3 mickey 561: void
1.1 deraadt 562: writefdef(f, nm)
1.4 pjanzen 563: struct fstate *f;
564: int nm;
1.1 deraadt 565: {
566: fprintf(output, ".ds f%c %s\n.nr s%c %d\n",
567: nm, f->font, nm, f->size);
568: }
569:
570: char *
571: chfont(of, nf, s)
1.4 pjanzen 572: struct fstate *of, *nf;
1.1 deraadt 573: char *s;
574: {
575: if (of->font[0] != nf->font[0]
576: || of->font[1] != nf->font[1]) {
577: *s++ = '\\';
578: *s++ = 'f';
579: if (nf->font[1]) {
580: *s++ = '(';
581: *s++ = nf->font[0];
582: *s++ = nf->font[1];
583: }
584: else
585: *s++ = nf->font[0];
586: }
587: if (nf->size != of->size) {
588: *s++ = '\\';
589: *s++ = 's';
590: if (nf->size < of->size) {
591: *s++ = '-';
592: *s++ = '0' + of->size - nf->size;
593: }
594: else {
595: *s++ = '+';
596: *s++ = '0' + nf->size - of->size;
597: }
598: }
599: return s;
600: }
601:
1.3 mickey 602: void
1.1 deraadt 603: parsefont(f, s0)
1.4 pjanzen 604: struct fstate *f;
1.1 deraadt 605: char *s0;
606: {
1.4 pjanzen 607: char *s = s0;
1.1 deraadt 608: int sizedelta = 0;
609: bzero(f, sizeof *f);
610: while (*s) {
611: if (isdigit(*s))
612: f->size = f->size * 10 + *s - '0';
613: else if (isupper(*s))
614: if (f->font[0])
615: f->font[1] = *s;
616: else
617: f->font[0] = *s;
618: else if (*s == 'c')
619: f->allcaps = 1;
620: else if (*s == '+')
621: sizedelta++;
622: else if (*s == '-')
623: sizedelta--;
1.6 mickey 624: else
625: errx(1, "bad font specification: %s", s0);
1.1 deraadt 626: s++;
627: }
628: if (f->font[0] == 0)
629: f->font[0] = 'R';
630: if (bodyf.size == 0)
631: bodyf.size = 11;
632: if (f->size == 0)
633: f->size = bodyf.size + sizedelta;
634: else if (sizedelta > 0)
635: f->size += bodyf.size;
636: else
637: f->size = bodyf.size - f->size;
638: }
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