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Diffstat (limited to '')
| -rw-r--r-- | bin/1sh/output.c | 370 |
1 files changed, 0 insertions, 370 deletions
diff --git a/bin/1sh/output.c b/bin/1sh/output.c deleted file mode 100644 index 1eb8b692..00000000 --- a/bin/1sh/output.c +++ /dev/null @@ -1,370 +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[] = "@(#)output.c 8.2 (Berkeley) 5/4/95"; -#endif -#endif /* not lint */ -#include <sys/cdefs.h> -__FBSDID("$FreeBSD: releng/12.0/bin/sh/output.c 326025 2017-11-20 19:49:47Z pfg $"); - -/* - * Shell output routines. We use our own output routines because: - * When a builtin command is interrupted we have to discard - * any pending output. - * When a builtin command appears in back quotes, we want to - * save the output of the command in a region obtained - * via malloc, rather than doing a fork and reading the - * output of the command via a pipe. - */ - -#include <stdio.h> /* defines BUFSIZ */ -#include <string.h> -#include <stdarg.h> -#include <errno.h> -#include <unistd.h> -#include <stdlib.h> -#include <wchar.h> -#include <wctype.h> - -#include "shell.h" -#include "syntax.h" -#include "output.h" -#include "memalloc.h" -#include "error.h" -#include "var.h" - - -#define OUTBUFSIZ BUFSIZ -#define MEM_OUT -2 /* output to dynamically allocated memory */ -#define OUTPUT_ERR 01 /* error occurred on output */ - -static int doformat_wr(void *, const char *, int); - -struct output output = {NULL, NULL, NULL, OUTBUFSIZ, 1, 0}; -struct output errout = {NULL, NULL, NULL, 256, 2, 0}; -struct output memout = {NULL, NULL, NULL, 64, MEM_OUT, 0}; -struct output *out1 = &output; -struct output *out2 = &errout; - -void -outcslow(int c, struct output *file) -{ - outc(c, file); -} - -void -out1str(const char *p) -{ - outstr(p, out1); -} - -void -out1qstr(const char *p) -{ - outqstr(p, out1); -} - -void -out2str(const char *p) -{ - outstr(p, out2); -} - -void -out2qstr(const char *p) -{ - outqstr(p, out2); -} - -void -outstr(const char *p, struct output *file) -{ - outbin(p, strlen(p), file); -} - -static void -byteseq(int ch, struct output *file) -{ - char seq[4]; - - seq[0] = '\\'; - seq[1] = (ch >> 6 & 0x3) + '0'; - seq[2] = (ch >> 3 & 0x7) + '0'; - seq[3] = (ch & 0x7) + '0'; - outbin(seq, 4, file); -} - -static void -outdqstr(const char *p, struct output *file) -{ - const char *end; - mbstate_t mbs; - size_t clen; - wchar_t wc; - - memset(&mbs, '\0', sizeof(mbs)); - end = p + strlen(p); - outstr("$'", file); - while ((clen = mbrtowc(&wc, p, end - p + 1, &mbs)) != 0) { - if (clen == (size_t)-2) { - while (p < end) - byteseq(*p++, file); - break; - } - if (clen == (size_t)-1) { - memset(&mbs, '\0', sizeof(mbs)); - byteseq(*p++, file); - continue; - } - if (wc == L'\n') - outcslow('\n', file), p++; - else if (wc == L'\r') - outstr("\\r", file), p++; - else if (wc == L'\t') - outstr("\\t", file), p++; - else if (!iswprint(wc)) { - for (; clen > 0; clen--) - byteseq(*p++, file); - } else { - if (wc == L'\'' || wc == L'\\') - outcslow('\\', file); - outbin(p, clen, file); - p += clen; - } - } - outcslow('\'', file); -} - -/* Like outstr(), but quote for re-input into the shell. */ -void -outqstr(const char *p, struct output *file) -{ - int i; - - if (p[0] == '\0') { - outstr("''", file); - return; - } - for (i = 0; p[i] != '\0'; i++) { - if ((p[i] > '\0' && p[i] < ' ' && p[i] != '\n') || - (p[i] & 0x80) != 0 || p[i] == '\'') { - outdqstr(p, file); - return; - } - } - - if (p[strcspn(p, "|&;<>()$`\\\" \n*?[~#=")] == '\0' || - strcmp(p, "[") == 0) { - outstr(p, file); - return; - } - - outcslow('\'', file); - outstr(p, file); - outcslow('\'', file); -} - -void -outbin(const void *data, size_t len, struct output *file) -{ - const char *p; - - p = data; - while (len-- > 0) - outc(*p++, file); -} - -void -emptyoutbuf(struct output *dest) -{ - int offset, newsize; - - if (dest->buf == NULL) { - INTOFF; - dest->buf = ckmalloc(dest->bufsize); - dest->nextc = dest->buf; - dest->bufend = dest->buf + dest->bufsize; - INTON; - } else if (dest->fd == MEM_OUT) { - offset = dest->nextc - dest->buf; - newsize = dest->bufsize << 1; - INTOFF; - dest->buf = ckrealloc(dest->buf, newsize); - dest->bufsize = newsize; - dest->bufend = dest->buf + newsize; - dest->nextc = dest->buf + offset; - INTON; - } else { - flushout(dest); - } -} - - -void -flushall(void) -{ - flushout(&output); - flushout(&errout); -} - - -void -flushout(struct output *dest) -{ - - if (dest->buf == NULL || dest->nextc == dest->buf || dest->fd < 0) - return; - if (xwrite(dest->fd, dest->buf, dest->nextc - dest->buf) < 0) - dest->flags |= OUTPUT_ERR; - dest->nextc = dest->buf; -} - - -void -freestdout(void) -{ - output.nextc = output.buf; -} - - -int -outiserror(struct output *file) -{ - return (file->flags & OUTPUT_ERR); -} - - -void -outclearerror(struct output *file) -{ - file->flags &= ~OUTPUT_ERR; -} - - -void -outfmt(struct output *file, const char *fmt, ...) -{ - va_list ap; - - va_start(ap, fmt); - doformat(file, fmt, ap); - va_end(ap); -} - - -void -out1fmt(const char *fmt, ...) -{ - va_list ap; - - va_start(ap, fmt); - doformat(out1, fmt, ap); - va_end(ap); -} - -void -out2fmt_flush(const char *fmt, ...) -{ - va_list ap; - - va_start(ap, fmt); - doformat(out2, fmt, ap); - va_end(ap); - flushout(out2); -} - -void -fmtstr(char *outbuf, int length, const char *fmt, ...) -{ - va_list ap; - - INTOFF; - va_start(ap, fmt); - vsnprintf(outbuf, length, fmt, ap); - va_end(ap); - INTON; -} - -static int -doformat_wr(void *cookie, const char *buf, int len) -{ - struct output *o; - - o = (struct output *)cookie; - outbin(buf, len, o); - - return (len); -} - -void -doformat(struct output *dest, const char *f, va_list ap) -{ - FILE *fp; - - if ((fp = fwopen(dest, doformat_wr)) != NULL) { - vfprintf(fp, f, ap); - fclose(fp); - } -} - -/* - * Version of write which resumes after a signal is caught. - */ - -int -xwrite(int fd, const char *buf, int nbytes) -{ - int ntry; - int i; - int n; - - n = nbytes; - ntry = 0; - for (;;) { - i = write(fd, buf, n); - if (i > 0) { - if ((n -= i) <= 0) - return nbytes; - buf += i; - ntry = 0; - } else if (i == 0) { - if (++ntry > 10) - return nbytes - n; - } else if (errno != EINTR) { - return -1; - } - } -} |