diff options
| -rw-r--r-- | usr.bin/m4/serv.c | 497 |
1 files changed, 0 insertions, 497 deletions
diff --git a/usr.bin/m4/serv.c b/usr.bin/m4/serv.c deleted file mode 100644 index f826be15060..00000000000 --- a/usr.bin/m4/serv.c +++ /dev/null @@ -1,497 +0,0 @@ -/* $OpenBSD: serv.c,v 1.6 1996/11/25 00:19:28 millert Exp $ */ -/* $NetBSD: serv.c,v 1.9 1996/11/10 21:23:53 pk Exp $ */ - -/* - * Copyright (c) 1989 - * The Regents of the University of California. All rights reserved. - * (c) UNIX System Laboratories, Inc. - * All or some portions of this file are derived from material licensed - * to the University of California by American Telephone and Telegraph - * Co. or Unix System Laboratories, Inc. and are reproduced herein with - * the permission of UNIX System Laboratories, Inc. - * - * This code is derived from software contributed to Berkeley by - * Ozan Yigit. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#ifndef lint -#if 0 -static char sccsid[] = "@(#)serv.c 5.4 (Berkeley) 1/21/94"; -#else -static char rcsid[] = "$OpenBSD: serv.c,v 1.6 1996/11/25 00:19:28 millert Exp $"; -#endif -#endif /* not lint */ - -/* - * serv.c - * Facility: m4 macro processor - * by: oz - */ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <fcntl.h> -#include "mdef.h" -#include "extr.h" -#include "pathnames.h" - -extern ndptr lookup(); -extern ndptr addent(); - -char *dumpfmt = "`%s'\t`%s'\n"; /* format string for dumpdef */ - -/* - * expand - user-defined macro expansion - * - */ -expand(argv, argc) -register char *argv[]; -register int argc; -{ - register char *t; - register char *p; - register int n; - register int argno; - - t = argv[0]; /* defn string as a whole */ - p = t; - while (*p) - p++; - p--; /* last character of defn */ - while (p > t) { - if (*(p-1) != ARGFLAG) - putback(*p); - else { - switch (*p) { - - case '#': - pbnum(argc-2); - break; - case '0': - case '1': - case '2': - case '3': - case '4': - case '5': - case '6': - case '7': - case '8': - case '9': - if ((argno = *p - '0') < argc-1) - pbstr(argv[argno+1]); - break; - case '*': - for (n = argc - 1; n > 2; n--) { - pbstr(argv[n]); - putback(COMMA); - } - pbstr(argv[2]); - break; - case '@': - for (n = argc - 1; n > 2; n--) { - pbstr(lquote); - pbstr(argv[n]); - pbstr(rquote); - putback(COMMA); - } - pbstr(lquote); - pbstr(argv[2]); - pbstr(rquote); - break; - default : - putback(*p); - break; - } - p--; - } - p--; - } - if (p == t) /* do last character */ - putback(*p); -} - -/* - * dodefine - install definition in the table - * - */ -dodefine(name, defn) -register char *name; -register char *defn; -{ - register ndptr p; - - if (!*name) - error("m4: null definition."); - if (strcmp(name, defn) == 0) - error("m4: recursive definition."); - if ((p = lookup(name)) == nil) - p = addent(name); - else if (p->defn != null) - free(p->defn); - if (!*defn) - p->defn = null; - else - p->defn = strdup(defn); - p->type = MACRTYPE; -} - -/* - * dodefn - push back a quoted definition of - * the given name. - */ - -dodefn(name) -char *name; -{ - register ndptr p; - - if ((p = lookup(name)) != nil && p->defn != null) { - putback(rquote); - pbstr(p->defn); - putback(lquote); - } -} - -/* - * dopushdef - install a definition in the hash table - * without removing a previous definition. Since - * each new entry is entered in *front* of the - * hash bucket, it hides a previous definition from - * lookup. - */ -dopushdef(name, defn) -register char *name; -register char *defn; -{ - register ndptr p; - - if (!*name) - error("m4: null definition"); - if (strcmp(name, defn) == 0) - error("m4: recursive definition."); - p = addent(name); - if (!*defn) - p->defn = null; - else - p->defn = strdup(defn); - p->type = MACRTYPE; -} - -/* - * dodumpdef - dump the specified definitions in the hash - * table to stderr. If nothing is specified, the entire - * hash table is dumped. - * - */ -dodump(argv, argc) -register char *argv[]; -register int argc; -{ - register int n; - ndptr p; - - if (argc > 2) { - for (n = 2; n < argc; n++) - if ((p = lookup(argv[n])) != nil) - fprintf(stderr, dumpfmt, p->name, - p->defn); - } - else { - for (n = 0; n < HASHSIZE; n++) - for (p = hashtab[n]; p != nil; p = p->nxtptr) - fprintf(stderr, dumpfmt, p->name, - p->defn); - } -} - -/* - * doifelse - select one of two alternatives - loop. - * - */ -doifelse(argv,argc) -register char *argv[]; -register int argc; -{ - cycle { - if (strcmp(argv[2], argv[3]) == 0) - pbstr(argv[4]); - else if (argc == 6) - pbstr(argv[5]); - else if (argc > 6) { - argv += 3; - argc -= 3; - continue; - } - break; - } -} - -/* - * doinclude - include a given file. - * - */ -doincl(ifile) -char *ifile; -{ - if (ilevel+1 == MAXINP) - error("m4: too many include files."); - if ((infile[ilevel+1] = fopen(ifile, "r")) != NULL) { - ilevel++; - return (1); - } - else - return (0); -} - -#ifdef EXTENDED -/* - * dopaste - include a given file without any - * macro processing. - */ -dopaste(pfile) -char *pfile; -{ - FILE *pf; - register int c; - - if ((pf = fopen(pfile, "r")) != NULL) { - while((c = getc(pf)) != EOF) - putc(c, active); - (void) fclose(pf); - return(1); - } - else - return(0); -} -#endif - -/* - * dochq - change quote characters - * - */ -dochq(argv, argc) -register char *argv[]; -register int argc; -{ - if (argc > 2) { - if (*argv[2]) - lquote = *argv[2]; - if (argc > 3) { - if (*argv[3]) - rquote = *argv[3]; - } - else - rquote = lquote; - } - else { - lquote = LQUOTE; - rquote = RQUOTE; - } -} - -/* - * dochc - change comment characters - * - */ -dochc(argv, argc) -register char *argv[]; -register int argc; -{ - if (argc > 2) { - if (*argv[2]) - scommt = *argv[2]; - if (argc > 3) { - if (*argv[3]) - ecommt = *argv[3]; - } - else - ecommt = ECOMMT; - } - else { - scommt = SCOMMT; - ecommt = ECOMMT; - } -} - -/* - * dodivert - divert the output to a temporary file - * - */ -dodiv(n) -register int n; -{ - int fd; - - if (n < 0 || n >= MAXOUT) - n = 0; /* bitbucket */ - if (outfile[n] == NULL) { - m4temp[UNIQUE] = n + '0'; - if ((fd = open(m4temp, O_CREAT|O_EXCL|O_WRONLY, 0600)) < 0 || - (outfile[n] = fdopen(fd, "w")) == NULL) - error("m4: cannot divert."); - } - oindex = n; - active = outfile[n]; -} - -/* - * doundivert - undivert a specified output, or all - * other outputs, in numerical order. - */ -doundiv(argv, argc) -register char *argv[]; -register int argc; -{ - register int ind; - register int n; - - if (argc > 2) { - for (ind = 2; ind < argc; ind++) { - n = atoi(argv[ind]); - if (n > 0 && n < MAXOUT && outfile[n] != NULL) - getdiv(n); - - } - } - else - for (n = 1; n < MAXOUT; n++) - if (outfile[n] != NULL) - getdiv(n); -} - -/* - * dosub - select substring - * - */ -dosub (argv, argc) -register char *argv[]; -register int argc; -{ - register char *ap, *fc, *k; - register int nc; - - if (argc < 5) - nc = MAXTOK; - else -#ifdef EXPR - nc = expr(argv[4]); -#else - nc = atoi(argv[4]); -#endif - ap = argv[2]; /* target string */ -#ifdef EXPR - fc = ap + expr(argv[3]); /* first char */ -#else - fc = ap + atoi(argv[3]); /* first char */ -#endif - if (fc >= ap && fc < ap+strlen(ap)) - for (k = fc+min(nc,strlen(fc))-1; k >= fc; k--) - putback(*k); -} - -/* - * map: - * map every character of s1 that is specified in from - * into s3 and replace in s. (source s1 remains untouched) - * - * This is a standard implementation of map(s,from,to) function of ICON - * language. Within mapvec, we replace every character of "from" with - * the corresponding character in "to". If "to" is shorter than "from", - * than the corresponding entries are null, which means that those - * characters dissapear altogether. Furthermore, imagine - * map(dest, "sourcestring", "srtin", "rn..*") type call. In this case, - * `s' maps to `r', `r' maps to `n' and `n' maps to `*'. Thus, `s' - * ultimately maps to `*'. In order to achieve this effect in an efficient - * manner (i.e. without multiple passes over the destination string), we - * loop over mapvec, starting with the initial source character. if the - * character value (dch) in this location is different than the source - * character (sch), sch becomes dch, once again to index into mapvec, until - * the character value stabilizes (i.e. sch = dch, in other words - * mapvec[n] == n). Even if the entry in the mapvec is null for an ordinary - * character, it will stabilize, since mapvec[0] == 0 at all times. At the - * end, we restore mapvec* back to normal where mapvec[n] == n for - * 0 <= n <= 127. This strategy, along with the restoration of mapvec, is - * about 5 times faster than any algorithm that makes multiple passes over - * destination string. - * - */ - -map(dest,src,from,to) -register char *dest; -register char *src; -register char *from; -register char *to; -{ - register char *tmp; - register char sch, dch; - static char mapvec[128] = { - 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, - 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, - 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, - 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, - 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, - 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, - 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, - 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, - 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, - 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, - 120, 121, 122, 123, 124, 125, 126, 127 - }; - - if (*src) { - tmp = from; - /* - * create a mapping between "from" and "to" - */ - while (*from) - mapvec[*from++] = (*to) ? *to++ : (char) 0; - - while (*src) { - sch = *src++; - dch = mapvec[sch]; - while (dch != sch) { - sch = dch; - dch = mapvec[sch]; - } - if (*dest = dch) - dest++; - } - /* - * restore all the changed characters - */ - while (*tmp) { - mapvec[*tmp] = *tmp; - tmp++; - } - } - *dest = (char) 0; -} |