Commit | Line | Data |
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c0bc4ef7 DF |
1 | /* |
2 | * Copyright (c) 1980 Regents of the University of California. | |
3 | * All rights reserved. The Berkeley software License Agreement | |
4 | * specifies the terms and conditions for redistribution. | |
5 | */ | |
6 | ||
7 | #ifndef lint | |
d1e6224c | 8 | static char sccsid[] = "@(#)io.c 5.4 (Berkeley) %G%"; |
c0bc4ef7 | 9 | #endif not lint |
87ba9e01 | 10 | |
1009bf5e KM |
11 | /*- |
12 | * Copyright (C) 1976 | |
13 | * by the | |
14 | * Board of Trustees | |
15 | * of the | |
16 | * University of Illinois | |
17 | * All rights reserved | |
18 | * FILE NAME: | |
19 | * io.c | |
20 | * PURPOSE: | |
21 | * Contains routines to handle i/o related stuff for indent. | |
22 | * GLOBALS: | |
23 | * None | |
24 | * FUNCTIONS: | |
25 | * dump_line | |
26 | * fill_buffer | |
27 | * pad_output | |
28 | * count_spaces | |
29 | * eqin | |
30 | * cmp | |
31 | * | |
32 | */\f | |
33 | /*- | |
34 | * | |
35 | * Copyright (C) 1976 | |
36 | * by the | |
37 | * Board of Trustees | |
38 | * of the | |
39 | * University of Illinois | |
40 | * | |
41 | * All rights reserved | |
42 | * | |
43 | * | |
44 | * NAME: | |
45 | * dump_line | |
46 | * | |
47 | * FUNCTION: | |
48 | * Does the actual printing of the stored up line | |
49 | * | |
50 | * ALGORITHM: | |
51 | * For each of the label, code, and comment sections which are used on | |
52 | * this line: | |
53 | * | |
54 | * 1) Use pad_output to get the section aligned properly. | |
55 | * 2) write the section | |
56 | * | |
57 | * The indentation level used for the code is set by ps.ind_level. After | |
58 | * printing, ps.ind_level is set to ps.i_l_follow. | |
59 | * | |
60 | * An extra level of indentation is added if ps.ind_stmt is 1. After | |
61 | * printing, ps.ind_stmt is set to 1 iff the line just printed has an | |
62 | * unterminated, non-declaration statement. | |
63 | * | |
64 | * HISTORY: | |
65 | * initial coding November 1976 D A Willcox of CAC | |
66 | * | |
67 | */\f | |
87ba9e01 KM |
68 | #include "indent_globs.h"; |
69 | ||
70 | ||
71 | ||
1009bf5e KM |
72 | int ff = 014; /* used to write a form feed */ |
73 | int comment_open; | |
74 | static paren_target; | |
87ba9e01 | 75 | |
1009bf5e KM |
76 | dump_line() |
77 | { /* dump_line is the routine that actually | |
78 | * effects the printing of the new source. | |
79 | * It prints the label section, followed | |
80 | * by the code section with the | |
81 | * appropriate nesting level, followed by | |
82 | * any comments */ | |
83 | register int cur_col, | |
84 | temp_col, | |
85 | target_col; | |
87ba9e01 | 86 | |
1009bf5e KM |
87 | if (ps.procname[0]) { |
88 | if (troff) | |
89 | fprintf(output, ".Pr \"%s\"\n", ps.procname); | |
90 | ps.ind_level = 0; | |
91 | ps.procname[0] = 0; | |
92 | } | |
93 | if (s_code == e_code && s_lab == e_lab && s_com == e_com) { | |
94 | if (suppress_blanklines>0) suppress_blanklines--; | |
87ba9e01 | 95 | else { |
1009bf5e KM |
96 | ps.bl_line = true; |
97 | n_real_blanklines++; | |
87ba9e01 | 98 | } |
87ba9e01 | 99 | } |
1009bf5e KM |
100 | else if (!inhibit_formatting) { |
101 | suppress_blanklines = 0; | |
102 | ps.bl_line = false; | |
103 | if (prefix_blankline_requested) | |
104 | if (swallow_optional_blanklines) { | |
105 | if (n_real_blanklines == 1) | |
106 | n_real_blanklines = 0; | |
107 | } | |
108 | else { | |
109 | if (n_real_blanklines == 0) | |
110 | n_real_blanklines = 1; | |
111 | } | |
112 | while (--n_real_blanklines >= 0) | |
113 | putc('\n', output); | |
114 | n_real_blanklines = 0; | |
115 | if (ps.ind_level == 0) | |
116 | ps.ind_stmt = 0; /* this is a class A kludge. dont do | |
117 | * additional statement indentation if we | |
118 | * are at bracket level 0 */ | |
119 | ||
120 | if (e_lab != s_lab || e_code != s_code) | |
121 | ++code_lines; /* keep count of lines with code */ | |
122 | ||
123 | ||
124 | if (e_lab != s_lab) { /* print lab, if any */ | |
125 | if (comment_open) { | |
126 | comment_open = 0; | |
127 | fprintf(output, ".*/\n"); | |
128 | } | |
129 | while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t')) | |
130 | e_lab--; | |
131 | cur_col = pad_output(1, compute_label_target()); | |
132 | fprintf(output, "%.*s", e_lab - s_lab, s_lab); | |
133 | cur_col = count_spaces(cur_col, s_lab); | |
87ba9e01 | 134 | } |
1009bf5e KM |
135 | else |
136 | cur_col = 1; /* there is no label section */ | |
137 | ||
138 | ps.pcase = false; | |
139 | ||
140 | if (s_code != e_code) { /* print code section, if any */ | |
141 | register char *p; | |
142 | ||
143 | if (comment_open) { | |
144 | comment_open = 0; | |
145 | fprintf(output, ".*/\n"); | |
146 | } | |
147 | target_col = compute_code_target(); | |
148 | { | |
149 | register i; | |
150 | ||
151 | for (i = 0; i < ps.p_l_follow; i++) | |
152 | if (ps.paren_indents[i] >= 0) | |
153 | ps.paren_indents[i] = -(ps.paren_indents[i] + target_col); | |
154 | } | |
155 | cur_col = pad_output(cur_col, target_col); | |
156 | for (p = s_code; p < e_code; p++) | |
157 | if (*p == 0200) | |
158 | fprintf(output, "%d", target_col * 7); | |
159 | else | |
160 | putc(*p, output); | |
161 | cur_col = count_spaces(cur_col, s_code); | |
162 | } | |
163 | if (s_com != e_com) | |
164 | if (troff) { | |
165 | register char *p; | |
166 | ||
167 | if (e_com[-1] == '/' && e_com[-2] == '*') | |
168 | e_com -= 2; | |
169 | while (e_com > s_com && e_com[-1] == ' ') | |
170 | e_com--; | |
171 | *e_com = 0; | |
172 | p = s_com; | |
173 | while (*p == ' ') | |
174 | p++; | |
175 | if (p[0] == '/' && p[1] == '*') | |
176 | p += 2; | |
177 | else if (p[0] == '*') | |
178 | p += p[1] == '/' ? 2 : 1; | |
179 | while (*p == ' ') | |
180 | p++; | |
181 | if (*p == 0) | |
182 | goto inhibit_newline; | |
183 | if (!comment_open) { | |
184 | if ('a' <= *p && *p <= 'z') | |
185 | *p = *p + 'A' - 'a'; | |
186 | if (s_code != e_code || s_lab != e_lab) { | |
187 | fprintf(output, "\\c\n./* %dp 1 %dp\n", | |
188 | ps.com_col * 7, target_col * 7); | |
189 | } | |
190 | else | |
191 | fprintf(output, "./* %dp 0 %dp\n", | |
192 | ps.com_col * 7, target_col * 7); | |
193 | } | |
194 | comment_open = 1; | |
195 | while (*p) { | |
196 | if (*p == BACKSLASH) | |
197 | putc(BACKSLASH, output); | |
198 | putc(*p++, output); | |
199 | } | |
200 | } | |
201 | else { /* print comment, if any */ | |
202 | register target = ps.com_col; | |
203 | register char *com_st = s_com; | |
204 | ||
205 | target += ps.comment_delta; | |
206 | while (target <= 0) | |
207 | if (*s_com == ' ') | |
208 | target++, s_com++; | |
209 | else if (*s_com == '\t') | |
210 | target = ((target - 1) & ~7) + 9, s_com++; | |
211 | else | |
212 | target = 1; | |
213 | if (cur_col > target) { /* if comment cant fit on this | |
214 | * line, put it on next line */ | |
215 | putc('\n', output); | |
216 | cur_col = 1; | |
217 | ++ps.out_lines; | |
218 | } | |
219 | cur_col = pad_output(cur_col, target); | |
220 | if (!ps.box_com) { | |
221 | if (star_comment_cont && com_st[1] != '*') | |
222 | if (com_st[1] == ' ' && com_st[0] == ' ') | |
223 | com_st[1] = '*'; | |
224 | else | |
225 | fwrite(" * ", com_st[0] == '\t' ? 2 : com_st[0] == '*' ? 1 : 3, 1, output); | |
226 | } | |
227 | fwrite(com_st, e_com - com_st, 1, output); | |
228 | ps.comment_delta = ps.n_comment_delta; | |
229 | cur_col = count_spaces(cur_col, com_st); | |
230 | ++ps.com_lines; /* count lines with comments */ | |
231 | } | |
232 | if (ps.use_ff) | |
233 | putc('\014', output); | |
234 | else | |
235 | putc('\n', output); | |
236 | inhibit_newline: | |
237 | ++ps.out_lines; | |
238 | if (ps.just_saw_decl == 1 && blanklines_after_declarations) { | |
239 | prefix_blankline_requested = 1; | |
240 | ps.just_saw_decl = 0; | |
241 | } | |
242 | else | |
243 | prefix_blankline_requested = postfix_blankline_requested; | |
244 | postfix_blankline_requested = 0; | |
87ba9e01 | 245 | } |
1009bf5e KM |
246 | ps.decl_on_line = ps.in_decl; /* if we are in the middle of a |
247 | * declaration, remember that fact | |
248 | * for proper comment indentation */ | |
249 | ps.ind_stmt = ps.in_stmt & ~ps.in_decl; /* next line should be | |
250 | * indented if we have not | |
251 | * completed this stmt and | |
252 | * if we are not in the | |
253 | * middle of a declaration */ | |
254 | ps.use_ff = false; | |
255 | ps.dumped_decl_indent = 0; | |
256 | *(e_lab = s_lab) = '\0'; /* reset buffers */ | |
87ba9e01 KM |
257 | *(e_code = s_code) = '\0'; |
258 | *(e_com = s_com) = '\0'; | |
1009bf5e KM |
259 | ps.ind_level = ps.i_l_follow; |
260 | ps.paren_level = ps.p_l_follow; | |
261 | paren_target = -ps.paren_indents[ps.paren_level - 1]; | |
87ba9e01 KM |
262 | return; |
263 | }; | |
87ba9e01 | 264 | |
1009bf5e KM |
265 | compute_code_target() { |
266 | register target_col = ps.ind_size * ps.ind_level + 1; | |
87ba9e01 | 267 | |
1009bf5e KM |
268 | if (ps.paren_level) |
269 | if (!lineup_to_parens) | |
270 | target_col += continuation_indent * ps.paren_level; | |
271 | else { | |
272 | register w; | |
273 | register t = paren_target; | |
274 | ||
275 | if ((w = count_spaces(t, s_code) - max_col) > 0 | |
276 | && count_spaces(target_col, s_code) <= max_col) { | |
277 | t -= w + 1; | |
278 | if (t > target_col) | |
279 | target_col = t; | |
280 | } | |
281 | else | |
282 | target_col = t; | |
283 | } | |
284 | else if (ps.ind_stmt) | |
285 | target_col += continuation_indent; | |
286 | return target_col; | |
287 | } | |
87ba9e01 | 288 | |
1009bf5e KM |
289 | compute_label_target() |
290 | { | |
291 | return | |
292 | ps.pcase ? (int) (case_ind * ps.ind_size) +1 | |
293 | : *s_lab == '#' ? 1 | |
294 | : ps.ind_size * (ps.ind_level - label_offset) +1; | |
295 | } | |
87ba9e01 | 296 | |
87ba9e01 | 297 | |
1009bf5e KM |
298 | /* |
299 | * Copyright (C) 1976 by the Board of Trustees of the University of | |
300 | * Illinois | |
301 | * | |
302 | * All rights reserved | |
303 | * | |
304 | * | |
305 | * NAME: fill_buffer | |
306 | * | |
307 | * FUNCTION: Reads one block of input into input_buffer | |
308 | * | |
309 | * HISTORY: initial coding November 1976 D A Willcox of CAC 1/7/77 | |
310 | * A Willcox of CAC Added check for switch back to partly full input | |
311 | * buffer from temporary buffer | |
312 | * | |
313 | */\f | |
314 | int | |
315 | fill_buffer() | |
316 | { /* this routine reads stuff from the input */ | |
317 | int count; | |
318 | register char *p; | |
319 | register int i; | |
320 | register FILE *f = input; | |
321 | ||
322 | if (bp_save != 0) { /* there is a partly filled input buffer | |
323 | * left */ | |
324 | buf_ptr = bp_save; /* dont read anything, just switch buffers */ | |
87ba9e01 KM |
325 | buf_end = be_save; |
326 | bp_save = be_save = 0; | |
327 | if (buf_ptr < buf_end) | |
1009bf5e KM |
328 | return; /* only return if there is really |
329 | * something in this buffer */ | |
87ba9e01 | 330 | } |
1009bf5e KM |
331 | p = in_buffer; |
332 | buf_ptr = p; | |
333 | while ((*p++ = i = getc(f)) != EOF && i != '\n'); | |
334 | if (i == EOF) { | |
335 | p[-1] = ' '; | |
336 | *p++ = '\n'; | |
87ba9e01 | 337 | had_eof = true; |
87ba9e01 | 338 | } |
1009bf5e KM |
339 | buf_end = p; |
340 | if (p[-2] == '/' && p[-3] == '*') { | |
341 | if (in_buffer[3] == 'I' && strncmp(in_buffer, "/**INDENT**", 11) == 0) | |
342 | fill_buffer(); /* flush indent error message */ | |
343 | else { | |
344 | int com = 0; | |
345 | ||
346 | p = in_buffer; | |
347 | while (*p == ' ' || *p == '\t') | |
348 | p++; | |
349 | if (*p == '/' && p[1] == '*') { | |
350 | p += 2; | |
351 | while (*p == ' ' || *p == '\t') | |
352 | p++; | |
353 | if (p[0] == 'I' && p[1] == 'N' && p[2] == 'D' && p[3] == 'E' | |
354 | && p[4] == 'N' && p[5] == 'T') { | |
355 | p += 6; | |
356 | while (*p == ' ' || *p == '\t') | |
357 | p++; | |
358 | if (*p == '*') | |
359 | com = 1; | |
360 | else if (*p == 'O') | |
361 | if (*++p == 'N') | |
362 | p++, com = 1; | |
363 | else if (*p == 'F' && *++p == 'F') | |
364 | p++, com = 2; | |
365 | while (*p == ' ' || *p == '\t') | |
366 | p++; | |
367 | if (p[0] == '*' && p[1] == '/' && p[2] == '\n' && com) { | |
368 | if (s_com != e_com || s_lab != e_lab || s_code != e_code) | |
369 | dump_line(); | |
370 | if (!(inhibit_formatting = com - 1)) { | |
371 | n_real_blanklines = 0; | |
372 | postfix_blankline_requested = 0; | |
373 | prefix_blankline_requested = 0; | |
374 | suppress_blanklines = 1; | |
375 | } | |
376 | } | |
377 | } | |
378 | } | |
379 | } | |
380 | } | |
381 | if (inhibit_formatting) { | |
382 | p = in_buffer; | |
383 | do | |
384 | putc(*p, output); | |
385 | while (*p++ != '\n'); | |
386 | } | |
87ba9e01 KM |
387 | return; |
388 | }; | |
87ba9e01 | 389 | |
1009bf5e KM |
390 | /* |
391 | * Copyright (C) 1976 by the Board of Trustees of the University of | |
392 | * Illinois | |
393 | * | |
394 | * All rights reserved | |
395 | * | |
396 | * | |
397 | * NAME: pad_output | |
398 | * | |
399 | * FUNCTION: Writes tabs and spaces to move the current column up to the | |
400 | * desired position. | |
401 | * | |
402 | * ALGORITHM: Put tabs and/or blanks into pobuf, then write pobuf. | |
403 | * | |
404 | * PARAMETERS: current integer The current column target | |
405 | * nteger The desired column | |
406 | * | |
407 | * RETURNS: Integer value of the new column. (If current >= target, no | |
408 | * action is taken, and current is returned. | |
409 | * | |
410 | * GLOBALS: None | |
411 | * | |
412 | * CALLS: write (sys) | |
413 | * | |
414 | * CALLED BY: dump_line | |
415 | * | |
416 | * HISTORY: initial coding November 1976 D A Willcox of CAC | |
417 | * | |
418 | */\f | |
419 | pad_output(current, target) /* writes tabs and blanks (if necessary) | |
420 | * to get the current output position up | |
421 | * to the target column */ | |
422 | int current; /* the current column value */ | |
423 | int target; /* position we want it at */ | |
87ba9e01 | 424 | { |
1009bf5e | 425 | register int curr; /* internal column pointer */ |
87ba9e01 KM |
426 | register int tcur; |
427 | ||
1009bf5e KM |
428 | if (troff) |
429 | fprintf(output, "\\h'|%dp'", (target - 1) * 7); | |
430 | else { | |
431 | if (current >= target) | |
432 | return (current); /* line is already long enough */ | |
433 | curr = current; | |
434 | while ((tcur = ((curr - 1) & tabmask) + tabsize + 1) <= target) { | |
435 | putc('\t', output); | |
87ba9e01 KM |
436 | curr = tcur; |
437 | } | |
1009bf5e KM |
438 | while (curr++ < target) |
439 | putc(' ', output); /* pad with final blanks */ | |
87ba9e01 | 440 | } |
87ba9e01 KM |
441 | return (target); |
442 | }; | |
87ba9e01 | 443 | |
1009bf5e KM |
444 | /* |
445 | * Copyright (C) 1976 by the Board of Trustees of the University of | |
446 | * Illinois | |
447 | * | |
448 | * All rights reserved | |
449 | * | |
450 | * | |
451 | * NAME: count_spaces | |
452 | * | |
453 | * FUNCTION: Find out where printing of a given string will leave the current | |
454 | * character position on output. | |
455 | * | |
456 | * ALGORITHM: Run thru input string and add appropriate values to current | |
457 | * position. | |
458 | * | |
459 | * RETURNS: Integer value of position after printing "buffer" starting in | |
460 | * column "current". | |
461 | * | |
462 | * HISTORY: initial coding November 1976 D A Willcox of CAC | |
463 | * | |
464 | */\f | |
465 | int | |
466 | count_spaces(current, buffer) | |
87ba9e01 | 467 | |
1009bf5e KM |
468 | /* |
469 | * this routine figures out where the character position will be after | |
470 | * printing the text in buffer starting at column "current" | |
471 | */ | |
472 | int current; | |
473 | char *buffer; | |
87ba9e01 | 474 | { |
1009bf5e KM |
475 | register char *buf; /* used to look thru buffer */ |
476 | register int cur; /* current character counter */ | |
87ba9e01 KM |
477 | |
478 | cur = current; | |
479 | ||
480 | for (buf = buffer; *buf != '\0'; ++buf) { | |
481 | switch (*buf) { | |
482 | ||
1009bf5e KM |
483 | case '\n': |
484 | case 014: /* form feed */ | |
87ba9e01 KM |
485 | cur = 1; |
486 | break; | |
487 | ||
1009bf5e | 488 | case '\t': |
87ba9e01 KM |
489 | cur = ((cur - 1) & tabmask) + tabsize + 1; |
490 | break; | |
491 | ||
1009bf5e | 492 | case '\b': /* this is a backspace */ |
87ba9e01 KM |
493 | --cur; |
494 | break; | |
495 | ||
1009bf5e | 496 | default: |
87ba9e01 KM |
497 | ++cur; |
498 | break; | |
1009bf5e KM |
499 | } /* end of switch */ |
500 | } /* end of for loop */ | |
87ba9e01 KM |
501 | return (cur); |
502 | }; | |
87ba9e01 | 503 | |
d1e6224c | 504 | int found_err; |
1009bf5e | 505 | diag(level, msg, a, b) |
87ba9e01 | 506 | { |
d1e6224c KB |
507 | if (level) |
508 | found_err = 1; | |
1009bf5e KM |
509 | if (output == stdout) { |
510 | fprintf(stdout, "/**INDENT** %s@%d: ", level == 0 ? "Warning" : "Error", line_no); | |
511 | fprintf(stdout, msg, a, b); | |
512 | fprintf(stdout, " */\n"); | |
87ba9e01 | 513 | } |
1009bf5e KM |
514 | else { |
515 | fprintf(stderr, "%s@%d: ", level == 0 ? "Warning" : "Error", line_no); | |
516 | fprintf(stderr, msg, a, b); | |
517 | fprintf(stderr, "\n"); | |
87ba9e01 | 518 | } |
87ba9e01 | 519 | } |