2fe8fb192f
There is important information about booting non-ack images in docs/UPDATING. ack/aout-format images can't be built any more, and booting clang/ELF-format ones is a little different. Updating to the new boot monitor is recommended. Changes in this commit: . drop boot monitor -> allowing dropping ack support . facility to copy ELF boot files to /boot so that old boot monitor can still boot fairly easily, see UPDATING . no more ack-format libraries -> single-case libraries . some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases . drop several ack toolchain commands, but not all support commands (e.g. aal is gone but acksize is not yet). . a few libc files moved to netbsd libc dir . new /bin/date as minix date used code in libc/ . test compile fix . harmonize includes . /usr/lib is no longer special: without ack, /usr/lib plays no kind of special bootstrapping role any more and bootstrapping is done exclusively through packages, so releases depend even less on the state of the machine making them now. . rename nbsd_lib* to lib* . reduce mtree
91 lines
2.2 KiB
C
91 lines
2.2 KiB
C
/* regsub
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*
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* Copyright (c) 1986 by University of Toronto.
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* Written by Henry Spencer. Not derived from licensed software.
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*
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* Permission is granted to anyone to use this software for any
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* purpose on any computer system, and to redistribute it freely,
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* subject to the following restrictions:
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*
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* 1. The author is not responsible for the consequences of use of
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* this software, no matter how awful, even if they arise
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* from defects in it.
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*
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* 2. The origin of this software must not be misrepresented, either
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* by explicit claim or by omission.
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*
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* 3. Altered versions must be plainly marked as such, and must not
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* be misrepresented as being the original software.
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*/
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#include <string.h>
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#include <stdio.h>
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#define const /* avoid "const poisoning" */
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#include <compat/regexp.h>
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#undef const
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/* The first byte of the regexp internal "program" is actually this magic
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* number; the start node begins in the second byte.
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*/
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#define MAGIC 0234
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#define CHARBITS 0377
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#ifndef CHARBITS
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#define UCHARAT(p) ((int)*(unsigned char *)(p))
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#else
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#define UCHARAT(p) ((int)*(p)&CHARBITS)
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#endif
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/*
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- regsub - perform substitutions after a regexp match
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*/
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void regsub(prog, source, dest)
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regexp *prog;
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char *source;
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char *dest;
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{
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register char *src;
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register char *dst;
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register char c;
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register int no;
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register int len;
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if (prog == (regexp *)NULL || source == (char *)NULL || dest == (char *)NULL) {
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regerror("NULL parm to regsub");
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return;
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}
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if (UCHARAT(prog->program) != MAGIC) {
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regerror("damaged regexp fed to regsub");
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return;
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}
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src = source;
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dst = dest;
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while ((c = *src++) != '\0') {
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if (c == '&')
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no = 0;
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else if (c == '\\' && '0' <= *src && *src <= '9')
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no = *src++ - '0';
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else
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no = -1;
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if (no < 0) { /* Ordinary character. */
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if (c == '\\' && (*src == '\\' || *src == '&')) c = *src++;
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*dst++ = c;
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} else
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if (prog->startp[no] != (char *)NULL && prog->endp[no] != (char *)NULL) {
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len = (int) (prog->endp[no] - prog->startp[no]);
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strncpy(dst, prog->startp[no], len);
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dst += len;
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if (len != 0 && *(dst - 1) == '\0') { /* strncpy hit NUL. */
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regerror("damaged match string");
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return;
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}
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}
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}
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*dst++ = '\0';
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}
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/*
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* $PchId: regsub.c,v 1.3 1995/11/27 20:18:16 philip Exp $
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*/
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