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Diffstat (limited to '')
| -rw-r--r-- | bin/1sh/show.c | 410 |
1 files changed, 0 insertions, 410 deletions
diff --git a/bin/1sh/show.c b/bin/1sh/show.c deleted file mode 100644 index a87a506d..00000000 --- a/bin/1sh/show.c +++ /dev/null @@ -1,410 +0,0 @@ -/*- - * SPDX-License-Identifier: BSD-3-Clause - * - * Copyright (c) 1991, 1993 - * The Regents of the University of California. All rights reserved. - * - * This code is derived from software contributed to Berkeley by - * Kenneth Almquist. - * - * 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. 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[] = "@(#)show.c 8.3 (Berkeley) 5/4/95"; -#endif -#endif /* not lint */ -#include <sys/cdefs.h> -/* $FreeBSD: releng/12.1/bin/sh/show.c 326025 2017-11-20 19:49:47Z pfg $ */ - -#include <fcntl.h> -#include <stdio.h> -#include <stdlib.h> -#include <stdarg.h> -#include <errno.h> - -#include "shell.h" -#include "parser.h" -#include "nodes.h" -#include "mystring.h" -#include "show.h" - - -#ifdef DEBUG -static void shtree(union node *, int, char *, FILE*); -static void shcmd(union node *, FILE *); -static void sharg(union node *, FILE *); -static void indent(int, char *, FILE *); -static void trstring(char *); - - -void -showtree(union node *n) -{ - trputs("showtree called\n"); - shtree(n, 1, NULL, stdout); -} - - -static void -shtree(union node *n, int ind, char *pfx, FILE *fp) -{ - struct nodelist *lp; - char *s; - - if (n == NULL) - return; - - indent(ind, pfx, fp); - switch(n->type) { - case NSEMI: - s = "; "; - goto binop; - case NAND: - s = " && "; - goto binop; - case NOR: - s = " || "; -binop: - shtree(n->nbinary.ch1, ind, NULL, fp); - /* if (ind < 0) */ - fputs(s, fp); - shtree(n->nbinary.ch2, ind, NULL, fp); - break; - case NCMD: - shcmd(n, fp); - if (ind >= 0) - putc('\n', fp); - break; - case NPIPE: - for (lp = n->npipe.cmdlist ; lp ; lp = lp->next) { - shcmd(lp->n, fp); - if (lp->next) - fputs(" | ", fp); - } - if (n->npipe.backgnd) - fputs(" &", fp); - if (ind >= 0) - putc('\n', fp); - break; - default: - fprintf(fp, "<node type %d>", n->type); - if (ind >= 0) - putc('\n', fp); - break; - } -} - - - -static void -shcmd(union node *cmd, FILE *fp) -{ - union node *np; - int first; - char *s; - int dftfd; - - first = 1; - for (np = cmd->ncmd.args ; np ; np = np->narg.next) { - if (! first) - putchar(' '); - sharg(np, fp); - first = 0; - } - for (np = cmd->ncmd.redirect ; np ; np = np->nfile.next) { - if (! first) - putchar(' '); - switch (np->nfile.type) { - case NTO: s = ">"; dftfd = 1; break; - case NAPPEND: s = ">>"; dftfd = 1; break; - case NTOFD: s = ">&"; dftfd = 1; break; - case NCLOBBER: s = ">|"; dftfd = 1; break; - case NFROM: s = "<"; dftfd = 0; break; - case NFROMTO: s = "<>"; dftfd = 0; break; - case NFROMFD: s = "<&"; dftfd = 0; break; - case NHERE: s = "<<"; dftfd = 0; break; - case NXHERE: s = "<<"; dftfd = 0; break; - default: s = "*error*"; dftfd = 0; break; - } - if (np->nfile.fd != dftfd) - fprintf(fp, "%d", np->nfile.fd); - fputs(s, fp); - if (np->nfile.type == NTOFD || np->nfile.type == NFROMFD) { - if (np->ndup.dupfd >= 0) - fprintf(fp, "%d", np->ndup.dupfd); - else - fprintf(fp, "-"); - } else if (np->nfile.type == NHERE) { - fprintf(fp, "HERE"); - } else if (np->nfile.type == NXHERE) { - fprintf(fp, "XHERE"); - } else { - sharg(np->nfile.fname, fp); - } - first = 0; - } -} - - - -static void -sharg(union node *arg, FILE *fp) -{ - char *p; - struct nodelist *bqlist; - int subtype; - - if (arg->type != NARG) { - printf("<node type %d>\n", arg->type); - fflush(stdout); - abort(); - } - bqlist = arg->narg.backquote; - for (p = arg->narg.text ; *p ; p++) { - switch (*p) { - case CTLESC: - putc(*++p, fp); - break; - case CTLVAR: - putc('$', fp); - putc('{', fp); - subtype = *++p; - if (subtype == VSLENGTH) - putc('#', fp); - - while (*p != '=') - putc(*p++, fp); - - if (subtype & VSNUL) - putc(':', fp); - - switch (subtype & VSTYPE) { - case VSNORMAL: - putc('}', fp); - break; - case VSMINUS: - putc('-', fp); - break; - case VSPLUS: - putc('+', fp); - break; - case VSQUESTION: - putc('?', fp); - break; - case VSASSIGN: - putc('=', fp); - break; - case VSTRIMLEFT: - putc('#', fp); - break; - case VSTRIMLEFTMAX: - putc('#', fp); - putc('#', fp); - break; - case VSTRIMRIGHT: - putc('%', fp); - break; - case VSTRIMRIGHTMAX: - putc('%', fp); - putc('%', fp); - break; - case VSLENGTH: - break; - default: - printf("<subtype %d>", subtype); - } - break; - case CTLENDVAR: - putc('}', fp); - break; - case CTLBACKQ: - case CTLBACKQ|CTLQUOTE: - putc('$', fp); - putc('(', fp); - shtree(bqlist->n, -1, NULL, fp); - putc(')', fp); - break; - default: - putc(*p, fp); - break; - } - } -} - - -static void -indent(int amount, char *pfx, FILE *fp) -{ - int i; - - for (i = 0 ; i < amount ; i++) { - if (pfx && i == amount - 1) - fputs(pfx, fp); - putc('\t', fp); - } -} - - -/* - * Debugging stuff. - */ - - -FILE *tracefile; - -#if DEBUG >= 2 -int debug = 1; -#else -int debug = 0; -#endif - - -void -trputc(int c) -{ - if (tracefile == NULL) - return; - putc(c, tracefile); - if (c == '\n') - fflush(tracefile); -} - - -void -sh_trace(const char *fmt, ...) -{ - va_list va; - va_start(va, fmt); - if (tracefile != NULL) { - (void) vfprintf(tracefile, fmt, va); - if (strchr(fmt, '\n')) - (void) fflush(tracefile); - } - va_end(va); -} - - -void -trputs(const char *s) -{ - if (tracefile == NULL) - return; - fputs(s, tracefile); - if (strchr(s, '\n')) - fflush(tracefile); -} - - -static void -trstring(char *s) -{ - char *p; - char c; - - if (tracefile == NULL) - return; - putc('"', tracefile); - for (p = s ; *p ; p++) { - switch (*p) { - case '\n': c = 'n'; goto backslash; - case '\t': c = 't'; goto backslash; - case '\r': c = 'r'; goto backslash; - case '"': c = '"'; goto backslash; - case '\\': c = '\\'; goto backslash; - case CTLESC: c = 'e'; goto backslash; - case CTLVAR: c = 'v'; goto backslash; - case CTLVAR+CTLQUOTE: c = 'V'; goto backslash; - case CTLBACKQ: c = 'q'; goto backslash; - case CTLBACKQ+CTLQUOTE: c = 'Q'; goto backslash; -backslash: putc('\\', tracefile); - putc(c, tracefile); - break; - default: - if (*p >= ' ' && *p <= '~') - putc(*p, tracefile); - else { - putc('\\', tracefile); - putc(*p >> 6 & 03, tracefile); - putc(*p >> 3 & 07, tracefile); - putc(*p & 07, tracefile); - } - break; - } - } - putc('"', tracefile); -} - - -void -trargs(char **ap) -{ - if (tracefile == NULL) - return; - while (*ap) { - trstring(*ap++); - if (*ap) - putc(' ', tracefile); - else - putc('\n', tracefile); - } - fflush(tracefile); -} - - -void -opentrace(void) -{ - char s[100]; - int flags; - - if (!debug) - return; -#ifdef not_this_way - { - char *p; - if ((p = getenv("HOME")) == NULL) { - if (geteuid() == 0) - p = "/"; - else - p = "/tmp"; - } - strcpy(s, p); - strcat(s, "/trace"); - } -#else - strcpy(s, "./trace"); -#endif /* not_this_way */ - if ((tracefile = fopen(s, "a")) == NULL) { - fprintf(stderr, "Can't open %s: %s\n", s, strerror(errno)); - return; - } - if ((flags = fcntl(fileno(tracefile), F_GETFL, 0)) >= 0) - fcntl(fileno(tracefile), F_SETFL, flags | O_APPEND); - fputs("\nTracing started.\n", tracefile); - fflush(tracefile); -} -#endif /* DEBUG */ |