717 lines
16 KiB
C
717 lines
16 KiB
C
/*
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* Copyright (c) 1980, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#ifndef lint
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static const char copyright[] =
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"@(#) Copyright (c) 1980, 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif
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#ifndef lint
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static const char sccsid[] = "@(#)vfontedpr.c 8.1 (Berkeley) 6/6/93";
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#endif
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <ctype.h>
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#include <err.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#include <string.h>
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#include <time.h>
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#include "pathnames.h"
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#include "extern.h"
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#define STANDARD 0
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#define ALTERNATE 1
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/*
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* Vfontedpr.
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*
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* Dave Presotto 1/12/81 (adapted from an earlier version by Bill Joy)
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*
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*/
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#define STRLEN 10 /* length of strings introducing things */
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#define PNAMELEN 40 /* length of a function/procedure name */
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#define PSMAX 20 /* size of procedure name stacking */
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static int iskw(char *);
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static bool isproc(char *);
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static void putKcp(char *, char *, bool);
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static void putScp(char *);
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static void putcp(int);
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static int tabs(char *, char *);
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static int width(char *, char *);
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/*
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* The state variables
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*/
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static bool filter = false; /* act as a filter (like eqn) */
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static bool inchr; /* in a string constant */
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static bool incomm; /* in a comment of the primary type */
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static bool idx = false; /* form an index */
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static bool instr; /* in a string constant */
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static bool nokeyw = false; /* no keywords being flagged */
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static bool pass = false; /*
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* when acting as a filter, pass indicates
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* whether we are currently processing
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* input.
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*/
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static int blklevel; /* current nesting level */
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static int comtype; /* type of comment */
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static char * defsfile[2] = { _PATH_VGRINDEFS, 0 };
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/* name of language definitions file */
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static int margin;
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static int plstack[PSMAX]; /* the procedure nesting level stack */
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static char pname[BUFSIZ+1];
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static bool prccont; /* continue last procedure */
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static int psptr; /* the stack index of the current procedure */
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static char pstack[PSMAX][PNAMELEN+1]; /* the procedure name stack */
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/*
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* The language specific globals
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*/
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char *l_acmbeg; /* string introducing a comment */
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char *l_acmend; /* string ending a comment */
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char *l_blkbeg; /* string beginning of a block */
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char *l_blkend; /* string ending a block */
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char *l_chrbeg; /* delimiter for character constant */
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char *l_chrend; /* delimiter for character constant */
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char *l_combeg; /* string introducing a comment */
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char *l_comend; /* string ending a comment */
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char l_escape; /* character used to escape characters */
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char *l_keywds[BUFSIZ/2]; /* keyword table address */
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char *l_nocom; /* regexp for non-comments */
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char *l_prcbeg; /* regular expr for procedure begin */
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char *l_strbeg; /* delimiter for string constant */
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char *l_strend; /* delimiter for string constant */
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bool l_toplex; /* procedures only defined at top lex level */
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const char *language = "c"; /* the language indicator */
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#define ps(x) printf("%s", x)
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static char minus[] = "-";
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static char minusn[] = "-n";
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int
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main(int argc, char **argv)
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{
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const char *fname = "";
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struct stat stbuf;
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char buf[BUFSIZ];
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char *defs;
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int needbp = 0;
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argc--, argv++;
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do {
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char *cp;
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int i;
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if (argc > 0) {
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if (!strcmp(argv[0], "-h")) {
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if (argc == 1) {
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printf("'ds =H\n");
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argc = 0;
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goto rest;
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}
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printf("'ds =H %s\n", argv[1]);
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argc--, argv++;
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argc--, argv++;
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if (argc > 0)
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continue;
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goto rest;
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}
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/* act as a filter like eqn */
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if (!strcmp(argv[0], "-f")) {
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filter = true;
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argv[0] = argv[argc-1];
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argv[argc-1] = minus;
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continue;
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}
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/* take input from the standard place */
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if (!strcmp(argv[0], "-")) {
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argc = 0;
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goto rest;
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}
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/* build an index */
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if (!strcmp(argv[0], "-x")) {
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idx = true;
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argv[0] = minusn;
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}
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/* indicate no keywords */
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if (!strcmp(argv[0], "-n")) {
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nokeyw = true;
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argc--, argv++;
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continue;
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}
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/* specify the font size */
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if (!strncmp(argv[0], "-s", 2)) {
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i = 0;
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cp = argv[0] + 2;
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while (*cp)
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i = i * 10 + (*cp++ - '0');
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printf("'ps %d\n'vs %d\n", i, i+1);
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argc--, argv++;
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continue;
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}
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/* specify the language */
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if (!strncmp(argv[0], "-l", 2)) {
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language = argv[0]+2;
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argc--, argv++;
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continue;
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}
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/* specify the language description file */
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if (!strncmp(argv[0], "-d", 2)) {
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defsfile[0] = argv[1];
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argc--, argv++;
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argc--, argv++;
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continue;
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}
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/* open the file for input */
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if (freopen(argv[0], "r", stdin) == NULL)
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err(1, "%s", argv[0]);
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if (idx)
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printf("'ta 4i 4.25i 5.5iR\n'in .5i\n");
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fname = argv[0];
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argc--, argv++;
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}
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rest:
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/*
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* get the language definition from the defs file
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*/
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i = cgetent(&defs, defsfile, language);
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if (i == -1) {
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fprintf (stderr, "no entry for language %s\n", language);
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exit(0);
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} else if (i == -2) { fprintf(stderr,
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"cannot find vgrindefs file %s\n", defsfile[0]);
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exit(0);
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} else if (i == -3) { fprintf(stderr,
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"potential reference loop detected in vgrindefs file %s\n",
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defsfile[0]);
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exit(0);
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}
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if (cgetustr(defs, "kw", &cp) == -1)
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nokeyw = true;
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else {
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char **cpp;
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cpp = l_keywds;
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while (*cp) {
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while (*cp == ' ' || *cp =='\t')
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*cp++ = '\0';
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if (*cp)
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*cpp++ = cp;
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while (*cp != ' ' && *cp != '\t' && *cp)
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cp++;
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}
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*cpp = NULL;
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}
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cgetustr(defs, "pb", &cp);
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l_prcbeg = convexp(cp);
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cgetustr(defs, "cb", &cp);
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l_combeg = convexp(cp);
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cgetustr(defs, "ce", &cp);
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l_comend = convexp(cp);
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cgetustr(defs, "ab", &cp);
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l_acmbeg = convexp(cp);
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cgetustr(defs, "ae", &cp);
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l_acmend = convexp(cp);
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cgetustr(defs, "sb", &cp);
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l_strbeg = convexp(cp);
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cgetustr(defs, "se", &cp);
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l_strend = convexp(cp);
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cgetustr(defs, "bb", &cp);
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l_blkbeg = convexp(cp);
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cgetustr(defs, "be", &cp);
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l_blkend = convexp(cp);
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cgetustr(defs, "lb", &cp);
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l_chrbeg = convexp(cp);
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cgetustr(defs, "le", &cp);
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l_chrend = convexp(cp);
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if (cgetustr(defs, "nc", &cp) >= 0)
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l_nocom = convexp(cp);
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l_escape = '\\';
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l_onecase = (cgetcap(defs, "oc", ':') != NULL);
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l_toplex = (cgetcap(defs, "tl", ':') != NULL);
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/* initialize the program */
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incomm = false;
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instr = false;
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inchr = false;
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_escaped = false;
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blklevel = 0;
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for (psptr=0; psptr<PSMAX; psptr++) {
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pstack[psptr][0] = '\0';
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plstack[psptr] = 0;
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}
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psptr = -1;
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ps("'-F\n");
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if (!filter) {
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printf(".ds =F %s\n", fname);
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ps("'wh 0 vH\n");
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ps("'wh -1i vF\n");
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}
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if (needbp) {
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needbp = 0;
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printf(".()\n");
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printf(".bp\n");
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}
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if (!filter) {
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fstat(fileno(stdin), &stbuf);
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cp = ctime(&stbuf.st_mtime);
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cp[16] = '\0';
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cp[24] = '\0';
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printf(".ds =M %s %s\n", cp+4, cp+20);
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}
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/*
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* MAIN LOOP!!!
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*/
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while (fgets(buf, sizeof buf, stdin) != NULL) {
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if (buf[0] == '\f') {
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printf(".bp\n");
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}
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if (buf[0] == '.') {
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printf("%s", buf);
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if (!strncmp (buf+1, "vS", 2))
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pass = true;
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if (!strncmp (buf+1, "vE", 2))
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pass = false;
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continue;
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}
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prccont = false;
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if (!filter || pass)
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putScp(buf);
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else
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printf("%s", buf);
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if (prccont && (psptr >= 0)) {
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ps("'FC ");
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ps(pstack[psptr]);
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ps("\n");
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}
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#ifdef DEBUG
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printf ("com %o str %o chr %o ptr %d\n", incomm, instr, inchr, psptr);
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#endif
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margin = 0;
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}
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needbp = 1;
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} while (argc > 0);
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exit(0);
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}
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#define isidchr(c) (isalnum(c) || (c) == '_')
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static void
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putScp(char *os)
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{
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register char *s = os; /* pointer to unmatched string */
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char dummy[BUFSIZ]; /* dummy to be used by expmatch */
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char *comptr; /* end of a comment delimiter */
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char *acmptr; /* end of a comment delimiter */
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char *strptr; /* end of a string delimiter */
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char *chrptr; /* end of a character const delimiter */
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char *blksptr; /* end of a lexical block start */
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char *blkeptr; /* end of a lexical block end */
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char *nocomptr; /* end of a non-comment delimiter */
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s_start = os; /* remember the start for expmatch */
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_escaped = false;
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if (nokeyw || incomm || instr)
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goto skip;
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if (isproc(s)) {
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ps("'FN ");
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ps(pname);
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ps("\n");
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if (psptr < PSMAX) {
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++psptr;
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strncpy (pstack[psptr], pname, PNAMELEN);
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pstack[psptr][PNAMELEN] = '\0';
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plstack[psptr] = blklevel;
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}
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}
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skip:
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do {
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/* check for string, comment, blockstart, etc */
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if (!incomm && !instr && !inchr) {
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blkeptr = expmatch(s, l_blkend, dummy);
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blksptr = expmatch(s, l_blkbeg, dummy);
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comptr = expmatch(s, l_combeg, dummy);
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acmptr = expmatch(s, l_acmbeg, dummy);
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strptr = expmatch(s, l_strbeg, dummy);
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chrptr = expmatch(s, l_chrbeg, dummy);
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nocomptr = expmatch (s, l_nocom, dummy);
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/* start of non-comment? */
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if (nocomptr != NULL)
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if ((nocomptr <= comptr || comptr == NULL)
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&& (nocomptr <= acmptr || acmptr == NULL)) {
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/* continue after non-comment */
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putKcp (s, nocomptr-1, false);
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s = nocomptr;
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continue;
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}
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/* start of a comment? */
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if (comptr != NULL)
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if ((comptr < strptr || strptr == NULL)
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&& (comptr < acmptr || acmptr == NULL)
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&& (comptr < chrptr || chrptr == NULL)
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&& (comptr < blksptr || blksptr == NULL)
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&& (comptr < blkeptr || blkeptr == NULL)) {
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putKcp(s, comptr-1, false);
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s = comptr;
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incomm = true;
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comtype = STANDARD;
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if (s != os)
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ps("\\c");
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ps("\\c\n'+C\n");
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continue;
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}
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/* start of a comment? */
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if (acmptr != NULL)
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if ((acmptr < strptr || strptr == NULL)
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&& (acmptr < chrptr || chrptr == NULL)
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&& (acmptr < blksptr || blksptr == NULL)
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&& (acmptr < blkeptr || blkeptr == NULL)) {
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putKcp(s, acmptr-1, false);
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s = acmptr;
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incomm = true;
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comtype = ALTERNATE;
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if (s != os)
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ps("\\c");
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ps("\\c\n'+C\n");
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continue;
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}
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/* start of a string? */
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if (strptr != NULL)
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if ((strptr < chrptr || chrptr == NULL)
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&& (strptr < blksptr || blksptr == NULL)
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&& (strptr < blkeptr || blkeptr == NULL)) {
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putKcp(s, strptr-1, false);
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s = strptr;
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instr = true;
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continue;
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}
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/* start of a character string? */
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if (chrptr != NULL)
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if ((chrptr < blksptr || blksptr == NULL)
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&& (chrptr < blkeptr || blkeptr == NULL)) {
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putKcp(s, chrptr-1, false);
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s = chrptr;
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inchr = true;
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continue;
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}
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/* end of a lexical block */
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if (blkeptr != NULL) {
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if (blkeptr < blksptr || blksptr == NULL) {
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putKcp(s, blkeptr - 1, false);
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s = blkeptr;
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if (blklevel > 0 /* sanity */)
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blklevel--;
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if (psptr >= 0 && plstack[psptr] >= blklevel) {
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/* end of current procedure */
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if (s != os)
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ps("\\c");
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ps("\\c\n'-F\n");
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blklevel = plstack[psptr];
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/* see if we should print the last proc name */
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if (--psptr >= 0)
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prccont = true;
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else
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psptr = -1;
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}
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continue;
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}
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}
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/* start of a lexical block */
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if (blksptr != NULL) {
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putKcp(s, blksptr - 1, false);
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s = blksptr;
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blklevel++;
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continue;
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}
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/* check for end of comment */
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} else if (incomm) {
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comptr = expmatch(s, l_comend, dummy);
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acmptr = expmatch(s, l_acmend, dummy);
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if (((comtype == STANDARD) && (comptr != NULL)) ||
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((comtype == ALTERNATE) && (acmptr != NULL))) {
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if (comtype == STANDARD) {
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putKcp(s, comptr-1, true);
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s = comptr;
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} else {
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putKcp(s, acmptr-1, true);
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s = acmptr;
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}
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incomm = false;
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ps("\\c\n'-C\n");
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continue;
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} else {
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putKcp(s, s + strlen(s) -1, true);
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s = s + strlen(s);
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continue;
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}
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/* check for end of string */
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} else if (instr) {
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if ((strptr = expmatch(s, l_strend, dummy)) != NULL) {
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putKcp(s, strptr-1, true);
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s = strptr;
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instr = false;
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continue;
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} else {
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putKcp(s, s+strlen(s)-1, true);
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s = s + strlen(s);
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continue;
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}
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/* check for end of character string */
|
|
} else if (inchr) {
|
|
if ((chrptr = expmatch(s, l_chrend, dummy)) != NULL) {
|
|
putKcp(s, chrptr-1, true);
|
|
s = chrptr;
|
|
inchr = false;
|
|
continue;
|
|
} else {
|
|
putKcp(s, s+strlen(s)-1, true);
|
|
s = s + strlen(s);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
/* print out the line */
|
|
putKcp(s, s + strlen(s) -1, false);
|
|
s = s + strlen(s);
|
|
} while (*s);
|
|
}
|
|
|
|
/*
|
|
* start: start of string to write
|
|
* end: end of string to write
|
|
* force: true if we should force nokeyw
|
|
*/
|
|
static void
|
|
putKcp(char *start, char *end, bool force)
|
|
{
|
|
int i;
|
|
int xfld = 0;
|
|
|
|
while (start <= end) {
|
|
if (idx) {
|
|
if (*start == ' ' || *start == '\t') {
|
|
if (xfld == 0)
|
|
printf("\001");
|
|
printf("\t");
|
|
xfld = 1;
|
|
while (*start == ' ' || *start == '\t')
|
|
start++;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
/* take care of nice tab stops */
|
|
if (*start == '\t') {
|
|
while (*start == '\t')
|
|
start++;
|
|
i = tabs(s_start, start) - margin / 8;
|
|
printf("\\h'|%dn'", i * 10 + 1 - margin % 8);
|
|
continue;
|
|
}
|
|
|
|
if (!nokeyw && !force)
|
|
if ((*start == '#' || isidchr(*start))
|
|
&& (start == s_start || !isidchr(start[-1]))) {
|
|
i = iskw(start);
|
|
if (i > 0) {
|
|
ps("\\*(+K");
|
|
do
|
|
putcp((unsigned char)*start++);
|
|
while (--i > 0);
|
|
ps("\\*(-K");
|
|
continue;
|
|
}
|
|
}
|
|
|
|
putcp((unsigned char)*start++);
|
|
}
|
|
}
|
|
|
|
|
|
static int
|
|
tabs(char *s, char *os)
|
|
{
|
|
|
|
return (width(s, os) / 8);
|
|
}
|
|
|
|
static int
|
|
width(register char *s, register char *os)
|
|
{
|
|
register int i = 0;
|
|
|
|
while (s < os) {
|
|
if (*s == '\t') {
|
|
i = (i + 8) &~ 7;
|
|
s++;
|
|
continue;
|
|
}
|
|
if (*s < ' ')
|
|
i += 2;
|
|
else
|
|
i++;
|
|
s++;
|
|
}
|
|
return (i);
|
|
}
|
|
|
|
static void
|
|
putcp(register int c)
|
|
{
|
|
|
|
switch(c) {
|
|
|
|
case 0:
|
|
break;
|
|
|
|
case '\f':
|
|
break;
|
|
|
|
case '\r':
|
|
break;
|
|
|
|
case '{':
|
|
ps("\\*(+K{\\*(-K");
|
|
break;
|
|
|
|
case '}':
|
|
ps("\\*(+K}\\*(-K");
|
|
break;
|
|
|
|
case '\\':
|
|
ps("\\e");
|
|
break;
|
|
|
|
case '_':
|
|
ps("\\*_");
|
|
break;
|
|
|
|
case '-':
|
|
ps("\\*-");
|
|
break;
|
|
|
|
case '`':
|
|
ps("\\`");
|
|
break;
|
|
|
|
case '\'':
|
|
ps("\\'");
|
|
break;
|
|
|
|
case '.':
|
|
ps("\\&.");
|
|
break;
|
|
|
|
case '*':
|
|
ps("\\fI*\\fP");
|
|
break;
|
|
|
|
case '/':
|
|
ps("\\fI\\h'\\w' 'u-\\w'/'u'/\\fP");
|
|
break;
|
|
|
|
default:
|
|
if (c < 040)
|
|
putchar('^'), c |= '@';
|
|
case '\t':
|
|
case '\n':
|
|
putchar(c);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* look for a process beginning on this line
|
|
*/
|
|
static bool
|
|
isproc(char *s)
|
|
{
|
|
pname[0] = '\0';
|
|
if (!l_toplex || blklevel == 0)
|
|
if (expmatch(s, l_prcbeg, pname) != NULL) {
|
|
return (true);
|
|
}
|
|
return (false);
|
|
}
|
|
|
|
|
|
/* iskw - check to see if the next word is a keyword
|
|
*/
|
|
|
|
static int
|
|
iskw(register char *s)
|
|
{
|
|
register char **ss = l_keywds;
|
|
register int i = 1;
|
|
register char *cp = s;
|
|
|
|
while (++cp, isidchr(*cp))
|
|
i++;
|
|
while ((cp = *ss++))
|
|
if (!STRNCMP(s,cp,i) && !isidchr(cp[i]))
|
|
return (i);
|
|
return (0);
|
|
}
|