mirror of git://git.psyced.org/git/psyclpc
718 lines
18 KiB
C
718 lines
18 KiB
C
/*
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* Copyright (c) 1985 Sun Microsystems, Inc.
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* Copyright (c) 1980 The Regents of the University of California.
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* Copyright (c) 1976 Board of Trustees of the University of Illinois.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that the above copyright notice and this paragraph are
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* duplicated in all such forms and that any documentation,
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* advertising materials, and other materials related to such
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* distribution and use acknowledge that the software was developed
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* by the University of California, Berkeley, the University of Illinois,
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* Urbana, and Sun Microsystems, Inc. The name of either University
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* or Sun Microsystems may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#ifndef lint
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static char sccsid[] = "@(#)io.c 5.10 (Berkeley) 9/15/88";
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#endif /* not lint */
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#include "indent_globs.h"
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#include <ctype.h>
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/* POSIX says that fcntl.h should exist. Linking either sys/fcntl.h
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or sys/file.h to fcntl.h should work fine if you don't have fcntl.h */
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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int suppress_blanklines = 0;
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int comment_open;
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int paren_target;
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/* true if INDENT OFF is in effect */
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static int inhibit_formatting;
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dump_line()
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{ /* dump_line is the routine that actually
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* effects the printing of the new source. It
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* prints the label section, followed by the
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* code section with the appropriate nesting
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* level, followed by any comments */
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register int cur_col,
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target_col;
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static not_first_line;
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if (parser_state_tos->procname[0]) {
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if (troff) {
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if (comment_open) {
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comment_open = 0;
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fprintf(output, ".*/\n");
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}
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fprintf(output, ".Pr \"%.*s\"\n", parser_state_tos->procname_end - parser_state_tos->procname,
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parser_state_tos->procname);
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}
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parser_state_tos->ind_level = 0;
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parser_state_tos->procname = "\0";
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}
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if (s_code == e_code && s_lab == e_lab && s_com == e_com) {
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/* If we have a formfeed on a blank line, we should just output it,
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rather than treat it as a normal blank line. */
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if (parser_state_tos->use_ff)
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{
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putc('\014',output);
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parser_state_tos->use_ff = false;
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}
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else
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{
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if (suppress_blanklines > 0)
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suppress_blanklines--;
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else {
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parser_state_tos->bl_line = true;
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n_real_blanklines++;
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}
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}
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}
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else if (!inhibit_formatting) {
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suppress_blanklines = 0;
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parser_state_tos->bl_line = false;
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if (prefix_blankline_requested && not_first_line)
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if (swallow_optional_blanklines) {
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if (n_real_blanklines == 1)
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n_real_blanklines = 0;
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}
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else {
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if (n_real_blanklines == 0)
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n_real_blanklines = 1;
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}
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while (--n_real_blanklines >= 0)
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putc('\n', output);
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n_real_blanklines = 0;
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if (parser_state_tos->ind_level == 0)
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parser_state_tos->ind_stmt = 0; /* this is a class A kludge. dont do
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* additional statement indentation if we are
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* at bracket level 0 */
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if (e_lab != s_lab || e_code != s_code)
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++code_lines; /* keep count of lines with code */
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if (e_lab != s_lab) { /* print lab, if any */
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if (comment_open) {
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comment_open = 0;
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fprintf(output, ".*/\n");
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}
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while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t'))
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e_lab--;
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cur_col = pad_output(1, compute_label_target());
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fprintf(output, "%.*s", e_lab - s_lab, s_lab);
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cur_col = count_spaces(cur_col, s_lab);
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}
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else
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cur_col = 1; /* there is no label section */
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parser_state_tos->pcase = false;
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if (s_code != e_code) { /* print code section, if any */
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register char *p;
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if (comment_open) {
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comment_open = 0;
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fprintf(output, ".*/\n");
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}
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target_col = compute_code_target();
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/* If a line ends in an lparen character, the following
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line should not line up with the parenthesis, but
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should be indented by the usual amount. */
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if (parser_state_tos->last_token == lparen)
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{
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parser_state_tos->paren_indents[parser_state_tos->p_l_follow-1]
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+= ind_size - 1;
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}
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{
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register i;
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for (i = 0; i < parser_state_tos->p_l_follow; i++)
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if (parser_state_tos->paren_indents[i] >= 0)
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parser_state_tos->paren_indents[i] = -(parser_state_tos->paren_indents[i] + target_col);
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}
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cur_col = pad_output(cur_col, target_col);
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for (p = s_code; p < e_code; p++)
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if (*p == (char) 0200)
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fprintf(output, "%d", target_col * 7);
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else
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putc(*p, output);
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cur_col = count_spaces(cur_col, s_code);
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}
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if (s_com != e_com)
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{
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if (troff) {
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int all_here = 0;
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register char *p;
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if (e_com[-1] == '/' && e_com[-2] == '*')
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e_com -= 2, all_here++;
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while (e_com > s_com && e_com[-1] == ' ')
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e_com--;
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*e_com = 0;
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p = s_com;
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while (*p == ' ')
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p++;
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if (p[0] == '/' && p[1] == '*')
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p += 2, all_here++;
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else if (p[0] == '*')
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p += p[1] == '/' ? 2 : 1;
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while (*p == ' ')
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p++;
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if (*p == 0)
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goto inhibit_newline;
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if (comment_open < 2 && parser_state_tos->box_com) {
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comment_open = 0;
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fprintf(output, ".*/\n");
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}
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if (comment_open == 0) {
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if ('a' <= *p && *p <= 'z')
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*p = *p + 'A' - 'a';
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if (e_com - p < 50 && all_here == 2) {
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register char *follow = p;
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fprintf(output, "\n.nr C! \\w\1");
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while (follow < e_com) {
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switch (*follow) {
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case '\n':
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putc(' ', output);
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case 1:
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break;
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case '\\':
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putc('\\', output);
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default:
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putc(*follow, output);
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}
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follow++;
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}
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putc(1, output);
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}
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fprintf(output, "\n./* %dp %d %dp\n",
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parser_state_tos->com_col * 7,
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(s_code != e_code || s_lab != e_lab) - parser_state_tos->box_com,
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target_col * 7);
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}
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comment_open = 1 + parser_state_tos->box_com;
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while (*p) {
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if (*p == BACKSLASH)
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putc(BACKSLASH, output);
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putc(*p++, output);
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}
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}
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else { /* print comment, if any */
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register target = parser_state_tos->com_col;
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register char *com_st = s_com;
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target += parser_state_tos->comment_delta;
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while (*com_st == '\t')
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com_st++, target += 8; /* ? */
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while (target <= 0)
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if (*com_st == ' ')
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target++, com_st++;
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else if (*com_st == '\t')
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target = ((target - 1) & ~7) + 9, com_st++;
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else
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target = 1;
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if (cur_col > target) { /* if comment cant fit on this line,
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* put it on next line */
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putc('\n', output);
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cur_col = 1;
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++parser_state_tos->out_lines;
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}
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while (e_com > com_st && isspace(e_com[-1]))
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e_com--;
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cur_col = pad_output(cur_col, target);
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if (!parser_state_tos->box_com) {
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if (star_comment_cont && (com_st[1] != '*' || e_com <= com_st + 1))
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if (com_st[1] == ' ' && com_st[0] == ' ' && e_com > com_st + 1)
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com_st[1] = '*';
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else
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fwrite(" * ", com_st[0] == '\t' ? 2 : com_st[0] == '*' ? 1 : 3, 1, output);
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}
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fwrite(com_st, e_com - com_st, 1, output);
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parser_state_tos->comment_delta = parser_state_tos->n_comment_delta;
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cur_col = count_spaces(cur_col, com_st);
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++parser_state_tos->com_lines; /* count lines with comments */
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}
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}
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if (parser_state_tos->use_ff)
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{
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putc('\014', output);
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parser_state_tos->use_ff = false;
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}
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else
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putc('\n', output);
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inhibit_newline:
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++parser_state_tos->out_lines;
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if (parser_state_tos->just_saw_decl == 1 && blanklines_after_declarations) {
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prefix_blankline_requested = 1;
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parser_state_tos->just_saw_decl = 0;
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}
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else
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prefix_blankline_requested = postfix_blankline_requested;
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postfix_blankline_requested = 0;
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}
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parser_state_tos->decl_on_line = parser_state_tos->in_decl; /* if we are in the middle of a
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* declaration, remember that fact for
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* proper comment indentation */
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parser_state_tos->ind_stmt = parser_state_tos->in_stmt & ~parser_state_tos->in_decl; /* next line should be
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* indented if we have not
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* completed this stmt and if
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* we are not in the middle of
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* a declaration */
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parser_state_tos->dumped_decl_indent = 0;
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*(e_lab = s_lab) = '\0'; /* reset buffers */
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*(e_code = s_code) = '\0';
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*(e_com = s_com) = '\0';
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parser_state_tos->ind_level = parser_state_tos->i_l_follow;
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parser_state_tos->paren_level = parser_state_tos->p_l_follow;
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paren_target = -parser_state_tos->paren_indents[parser_state_tos->paren_level - 1];
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not_first_line = 1;
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return;
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}
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/* Figure out where we should put the code in codebuf.
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Return the column number in spaces. */
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int
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compute_code_target()
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{
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register target_col = parser_state_tos->ind_level + 1;
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if (parser_state_tos->paren_level)
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if (!lineup_to_parens)
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target_col += continuation_indent * parser_state_tos->paren_level;
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else {
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register w;
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register t = paren_target;
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if ((w = count_spaces(t, s_code) - max_col) > 0
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&& count_spaces(target_col, s_code) <= max_col) {
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t -= w + 1;
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if (t > target_col)
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target_col = t;
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}
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else
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target_col = t;
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}
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else if (parser_state_tos->ind_stmt)
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target_col += continuation_indent;
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return target_col;
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}
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int
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compute_label_target()
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{
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return
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parser_state_tos->pcase ? case_ind + 1
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: *s_lab == '#' ? 1
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: parser_state_tos->ind_level - label_offset + 1;
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}
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/* Allocate space for FILENAME, read in the file, and set in_prog and
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in_prog_pos to point to the buffer. If any errors occur, report an
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error message and abort. */
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void
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read_file(filename)
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char *filename;
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{
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/* File descriptor for the input file */
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int in_fd;
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/* File status for the input file */
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struct stat in_stat;
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/* buffer used for error messages */
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char *errbuf;
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errbuf = (char *)xmalloc (strlen (filename) + 80);
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sprintf(errbuf,"indent: %s",filename);
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in_fd = open(filename,O_RDONLY,0777);
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if (in_fd < 0)
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{
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perror(errbuf);
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exit(1);
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}
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if (fstat(in_fd,&in_stat) < 0)
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{
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perror(errbuf);
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exit(1);
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}
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in_prog_size = in_stat.st_size;
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in_prog = xmalloc(in_prog_size + 3); /* 3 for ' ','\n','\0' */
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if (read(in_fd,in_prog,in_prog_size) < 0)
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{
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perror(errbuf);
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exit(1);
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}
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if (close(in_fd) < 0)
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{
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perror(errbuf);
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exit(1);
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}
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in_prog[in_prog_size] = ' ';
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in_prog[in_prog_size+1] = '\n';
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in_prog[in_prog_size+2] = 0;
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in_prog_pos = in_prog;
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free (errbuf);
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}
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/* Like read_file but read from stdin. */
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void
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read_stdin()
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{
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unsigned int alloc_size = 10000;
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char ch;
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unsigned int pos;
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unsigned i;
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in_prog_pos = in_prog = xmalloc(alloc_size);
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in_prog_size = 0;
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do
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{
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/* Copy up until 3 bytes before the end of the buffer,
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(the 3 is for ' \n\0')... */
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for (; in_prog_size < alloc_size - 3; in_prog_size++)
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{
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ch = getc(stdin);
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if (ch == EOF)
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break;
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in_prog[in_prog_size] = ch;
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}
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/* ...and if that's not enough allocate more. */
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if (ch != EOF) {
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alloc_size *= 2;
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in_prog = xrealloc(in_prog,alloc_size);
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}
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}
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while (ch != EOF);
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in_prog[in_prog_size] = ' ';
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in_prog[in_prog_size+1] = '\n';
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in_prog[in_prog_size+2] = 0;
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in_prog_pos = in_prog;
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}
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/* Advance buf_ptr so that it points to the next line of input. Skip
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over indent errors (comments beginning with *INDENT**), ignoring
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them. Process INDENT ON and INDENT OFF. (Note: the name of this
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function is a historical artifact from before the time that indent
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kept the whole source file in memory). */
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fill_buffer()
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{
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/* Point various places in the buffer. */
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char *p;
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/* Have we found INDENT ON or INDENT OFF ? */
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enum {None,Indent_on,Indent_off} com;
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if (bp_save != 0)
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{ /* there is a partly filled input buffer left */
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buf_ptr = bp_save; /* dont read anything, just switch buffers */
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buf_end = be_save;
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bp_save = be_save = 0;
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if (buf_ptr < buf_end)
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return; /* only return if there is really something in
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* this buffer */
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}
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fill_it:
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cur_line = in_prog_pos;
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buf_ptr = in_prog_pos;
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for (p = buf_ptr; *p && *p++ != '\n';)
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;
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buf_end = p;
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if (!*p)
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had_eof = true;
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p = buf_ptr;
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in_prog_pos = buf_end;
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while (*p == ' ' || *p == '\t')
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p++;
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if (*p == '/' && p[1] == '*')
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{
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p += 2;
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if (p[1] == 'I' && strncmp(p,"*INDENT**",9) == 0)
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goto fill_it;
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while (*p == ' ' || *p == '\t')
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p++;
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com = None;
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if (p[0] == 'I' && p[1] == 'N' && p[2] == 'D' && p[3] == 'E'
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&& p[4] == 'N' && p[5] == 'T') {
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p += 6;
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while (*p == ' ' || *p == '\t')
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p++;
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if (*p == '*')
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com = 1;
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else if (*p == 'O')
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if (*++p == 'N')
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p++, com = Indent_on;
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else if (*p == 'F' && *++p == 'F')
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p++, com = Indent_off;
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while (*p == ' ' || *p == '\t')
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p++;
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if (p[0] == '*' && p[1] == '/' && p[2] == '\n' && com) {
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if (s_com != e_com || s_lab != e_lab || s_code != e_code)
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dump_line();
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if (!(inhibit_formatting = com - 1)) {
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n_real_blanklines = 0;
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postfix_blankline_requested = 0;
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prefix_blankline_requested = 0;
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suppress_blanklines = 1;
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}
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}
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}
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}
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if (inhibit_formatting)
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{
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p = buf_ptr;
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do
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putc(*p,output);
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while (*p++ != '\n');
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}
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}
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/*
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* Copyright (C) 1976 by the Board of Trustees of the University of Illinois
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*
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* All rights reserved
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*
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*
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* NAME: pad_output
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*
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||
* FUNCTION: Writes tabs and spaces to move the current column up to the desired
|
||
* position.
|
||
*
|
||
* ALGORITHM: Put tabs and/or blanks into pobuf, then write pobuf.
|
||
*
|
||
* PARAMETERS: current integer The current column target
|
||
* nteger The desired column
|
||
*
|
||
* RETURNS: Integer value of the new column. (If current >= target, no action is
|
||
* taken, and current is returned.
|
||
*
|
||
* GLOBALS: None
|
||
*
|
||
* CALLS: write (sys)
|
||
*
|
||
* CALLED BY: dump_line
|
||
*
|
||
* HISTORY: initial coding November 1976 D A Willcox of CAC
|
||
*
|
||
*/
|
||
pad_output(current, target) /* writes tabs and blanks (if necessary) to
|
||
* get the current output position up to the
|
||
* target column */
|
||
int current; /* the current column value */
|
||
int target; /* position we want it at */
|
||
{
|
||
register int curr; /* internal column pointer */
|
||
register int tcur;
|
||
|
||
if (troff)
|
||
fprintf(output, "\\h'|%dp'", (target - 1) * 7);
|
||
else {
|
||
if (current >= target)
|
||
return (current); /* line is already long enough */
|
||
curr = current;
|
||
while ((tcur = ((curr - 1) & tabmask) + tabsize + 1) <= target) {
|
||
putc('\t', output);
|
||
curr = tcur;
|
||
}
|
||
while (curr++ < target)
|
||
putc(' ', output); /* pad with final blanks */
|
||
}
|
||
return (target);
|
||
}
|
||
|
||
/*
|
||
* Copyright (C) 1976 by the Board of Trustees of the University of Illinois
|
||
*
|
||
* All rights reserved
|
||
*
|
||
*
|
||
* NAME: count_spaces
|
||
*
|
||
* FUNCTION: Find out where printing of a given string will leave the current
|
||
* character position on output.
|
||
*
|
||
* ALGORITHM: Run thru input string and add appropriate values to current
|
||
* position.
|
||
*
|
||
* RETURNS: Integer value of position after printing "buffer" starting in column
|
||
* "current".
|
||
*
|
||
* HISTORY: initial coding November 1976 D A Willcox of CAC
|
||
*
|
||
*/
|
||
int
|
||
count_spaces(current, buffer)
|
||
/*
|
||
* this routine figures out where the character position will be after
|
||
* printing the text in buffer starting at column "current"
|
||
*/
|
||
int current;
|
||
char *buffer;
|
||
{
|
||
register char *buf; /* used to look thru buffer */
|
||
register int cur; /* current character counter */
|
||
|
||
cur = current;
|
||
|
||
for (buf = buffer; *buf != '\0'; ++buf) {
|
||
switch (*buf) {
|
||
|
||
case '\n':
|
||
case 014: /* form feed */
|
||
cur = 1;
|
||
break;
|
||
|
||
case '\t':
|
||
cur = ((cur - 1) & tabmask) + tabsize + 1;
|
||
break;
|
||
|
||
case '': /* this is a backspace */
|
||
--cur;
|
||
break;
|
||
|
||
default:
|
||
++cur;
|
||
break;
|
||
} /* end of switch */
|
||
} /* end of for loop */
|
||
return (cur);
|
||
}
|
||
|
||
/* Nonzero if we have found an error (not a warning). */
|
||
int found_err;
|
||
|
||
/* Signal an error. LEVEL is nonzero if it is an error (as opposed to
|
||
a warning. MSG is a printf-style format string. Additional
|
||
arguments are additional arguments for printf. */
|
||
diag(level, msg, a, b)
|
||
{
|
||
if (level)
|
||
found_err = 1;
|
||
if (output == stdout) {
|
||
fprintf(stdout, "/**INDENT** %s@%d: ", level == 0 ? "Warning" : "Error", line_no);
|
||
fprintf(stdout, (char *)msg, a, b);
|
||
fprintf(stdout, " */\n");
|
||
}
|
||
else {
|
||
fprintf(stderr, "%s: %d: ", in_name, line_no);
|
||
fprintf(stderr, (char *)msg, a, b);
|
||
fprintf(stderr, "\n");
|
||
}
|
||
}
|
||
|
||
writefdef(f, nm)
|
||
register struct fstate *f;
|
||
{
|
||
fprintf(output, ".ds f%c %s\n.nr s%c %d\n",
|
||
nm, f->font, nm, f->size);
|
||
}
|
||
|
||
/* Write characters starting at S to change the font from OF to NF. Return
|
||
a pointer to the character after the last character written.
|
||
For troff mode only. */
|
||
char *
|
||
chfont(of, nf, s)
|
||
register struct fstate *of,
|
||
*nf;
|
||
char *s;
|
||
{
|
||
if (of->font[0] != nf->font[0]
|
||
|| of->font[1] != nf->font[1]) {
|
||
*s++ = '\\';
|
||
*s++ = 'f';
|
||
if (nf->font[1]) {
|
||
*s++ = '(';
|
||
*s++ = nf->font[0];
|
||
*s++ = nf->font[1];
|
||
}
|
||
else
|
||
*s++ = nf->font[0];
|
||
}
|
||
if (nf->size != of->size) {
|
||
*s++ = '\\';
|
||
*s++ = 's';
|
||
if (nf->size < of->size) {
|
||
*s++ = '-';
|
||
*s++ = '0' + of->size - nf->size;
|
||
}
|
||
else {
|
||
*s++ = '+';
|
||
*s++ = '0' + nf->size - of->size;
|
||
}
|
||
}
|
||
return s;
|
||
}
|
||
|
||
|
||
parsefont(f, s0)
|
||
register struct fstate *f;
|
||
char *s0;
|
||
{
|
||
register char *s = s0;
|
||
int sizedelta = 0;
|
||
int i;
|
||
|
||
f->size = 0;
|
||
f->allcaps = 1;
|
||
for (i = 0; i < 4; i++)
|
||
f->font[i] = 0;
|
||
|
||
while (*s) {
|
||
if (isdigit(*s))
|
||
f->size = f->size * 10 + *s - '0';
|
||
else if (isupper(*s))
|
||
if (f->font[0])
|
||
f->font[1] = *s;
|
||
else
|
||
f->font[0] = *s;
|
||
else if (*s == 'c')
|
||
f->allcaps = 1;
|
||
else if (*s == '+')
|
||
sizedelta++;
|
||
else if (*s == '-')
|
||
sizedelta--;
|
||
else {
|
||
fprintf(stderr, "indent: bad font specification: %s\n", s0);
|
||
exit(1);
|
||
}
|
||
s++;
|
||
}
|
||
if (f->font[0] == 0)
|
||
f->font[0] = 'R';
|
||
if (bodyf.size == 0)
|
||
bodyf.size = 11;
|
||
if (f->size == 0)
|
||
f->size = bodyf.size + sizedelta;
|
||
else if (sizedelta > 0)
|
||
f->size += bodyf.size;
|
||
else
|
||
f->size = bodyf.size - f->size;
|
||
}
|