2 * Copyright (c) 1991, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * @(#)show.c 8.3 (Berkeley) 5/4/95
37 * $FreeBSD: head/bin/sh/show.c 213811 2010-10-13 22:18:03Z obrien $
54 static void shtree(union node *, int, char *, FILE*);
55 static void shcmd(union node *, FILE *);
56 static void sharg(union node *, FILE *);
57 static void indent(int, char *, FILE *);
58 static void trstring(char *);
62 showtree(union node *n)
64 trputs("showtree called\n");
65 shtree(n, 1, NULL, stdout);
70 shtree(union node *n, int ind, char *pfx, FILE *fp)
89 shtree(n->nbinary.ch1, ind, NULL, fp);
92 shtree(n->nbinary.ch2, ind, NULL, fp);
100 for (lp = n->npipe.cmdlist ; lp ; lp = lp->next) {
105 if (n->npipe.backgnd)
111 fprintf(fp, "<node type %d>", n->type);
121 shcmd(union node *cmd, FILE *fp)
129 for (np = cmd->ncmd.args ; np ; np = np->narg.next) {
135 for (np = cmd->ncmd.redirect ; np ; np = np->nfile.next) {
138 switch (np->nfile.type) {
139 case NTO: s = ">"; dftfd = 1; break;
140 case NAPPEND: s = ">>"; dftfd = 1; break;
141 case NTOFD: s = ">&"; dftfd = 1; break;
142 case NCLOBBER: s = ">|"; dftfd = 1; break;
143 case NFROM: s = "<"; dftfd = 0; break;
144 case NFROMTO: s = "<>"; dftfd = 0; break;
145 case NFROMFD: s = "<&"; dftfd = 0; break;
146 case NHERE: s = "<<"; dftfd = 0; break;
147 case NXHERE: s = "<<"; dftfd = 0; break;
148 default: s = "*error*"; dftfd = 0; break;
150 if (np->nfile.fd != dftfd)
151 fprintf(fp, "%d", np->nfile.fd);
153 if (np->nfile.type == NTOFD || np->nfile.type == NFROMFD) {
154 if (np->ndup.dupfd >= 0)
155 fprintf(fp, "%d", np->ndup.dupfd);
158 } else if (np->nfile.type == NHERE) {
160 } else if (np->nfile.type == NXHERE) {
161 fprintf(fp, "XHERE");
163 sharg(np->nfile.fname, fp);
172 sharg(union node *arg, FILE *fp)
175 struct nodelist *bqlist;
178 if (arg->type != NARG) {
179 printf("<node type %d>\n", arg->type);
183 bqlist = arg->narg.backquote;
184 for (p = arg->narg.text ; *p ; p++) {
193 if (subtype == VSLENGTH)
202 switch (subtype & VSTYPE) {
235 printf("<subtype %d>", subtype);
242 case CTLBACKQ|CTLQUOTE:
245 shtree(bqlist->n, -1, NULL, fp);
257 indent(int amount, char *pfx, FILE *fp)
261 for (i = 0 ; i < amount ; i++) {
262 if (pfx && i == amount - 1)
286 if (tracefile == NULL)
295 sh_trace(const char *fmt, ...)
299 if (tracefile != NULL) {
300 vfprintf(tracefile, fmt, va);
301 if (strchr(fmt, '\n'))
309 trputs(const char *s)
311 if (tracefile == NULL)
325 if (tracefile == NULL)
327 putc('"', tracefile);
328 for (p = s ; *p ; p++) {
330 case '\n': c = 'n'; goto backslash;
331 case '\t': c = 't'; goto backslash;
332 case '\r': c = 'r'; goto backslash;
333 case '"': c = '"'; goto backslash;
334 case '\\': c = '\\'; goto backslash;
335 case CTLESC: c = 'e'; goto backslash;
336 case CTLVAR: c = 'v'; goto backslash;
337 case CTLVAR+CTLQUOTE: c = 'V'; goto backslash;
338 case CTLBACKQ: c = 'q'; goto backslash;
339 case CTLBACKQ+CTLQUOTE: c = 'Q'; goto backslash;
340 backslash: putc('\\', tracefile);
344 if (*p >= ' ' && *p <= '~')
347 putc('\\', tracefile);
348 putc(*p >> 6 & 03, tracefile);
349 putc(*p >> 3 & 07, tracefile);
350 putc(*p & 07, tracefile);
355 putc('"', tracefile);
362 if (tracefile == NULL)
367 putc(' ', tracefile);
369 putc('\n', tracefile);
386 if ((p = getenv("HOME")) == NULL) {
397 #endif /* not_this_way */
398 if ((tracefile = fopen(s, "a")) == NULL) {
399 fprintf(stderr, "Can't open %s: %s\n", s, strerror(errno));
402 if ((flags = fcntl(fileno(tracefile), F_GETFL, 0)) >= 0)
403 fcntl(fileno(tracefile), F_SETFL, flags | O_APPEND);
404 fputs("\nTracing started.\n", tracefile);