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![Simon J. Gerraty](/assets/img/avatar_default.png)
Changes since 20181221 are mostly portability related hence the large gap in versions imported. There are however some bug fixes, and a rework of filemon handling. In NetBSD make/filemon/filemon_ktrace.c allows use of fktrace and elimination of filemon(4) which has not had the TLC it needs. FreeBSD filemon(4) is in much better shape, so bmake/filemon/filemon_dev.c allows use of that, with a bit less overhead than the ktrace model. Summary of changes from ChangeLog o str.c: empty string does not match % pattern plus unit-test changes o var.c: import handling of old sysV style modifier using '%' o str.c: refactor brk_string o meta.c: meta_oodate, CHECK_VALID_META is too aggressive for CMD a blank command is perfectly valid. o meta.c: meta_oodate, check for corrupted meta file earlier and more often. * meta.c: meta_compat_parent check for USE_FILEMON patch from Soeren Tempel o meta.c: fix compat mode, need to call meta_job_output() o job.c: extra fds for meta mode not needed if using filemon_dev o meta.c: avoid passing NULL to filemon_*() when meta_needed() returns FALSE. o filemon/filemon_{dev,ktrace}.c: allow selection of filemon implementation. filemon_dev.c uses the kernel module while filemon_ktrace.c leverages the fktrace api available in NetBSD. filemon_ktrace.c can hopefully form the basis for adding support for other tracing mechanisms such as strace on Linux. o meta.c: when target is out-of-date per normal make rules record value of .OODATE in meta file. o parse.c: don't pass NULL to realpath(3) some versions cannot handle it. o parse.c: ParseDoDependency: free paths rather than assert plus more unit-tests
541 lines
14 KiB
C
541 lines
14 KiB
C
/* $NetBSD: str.c,v 1.42 2020/05/06 02:30:10 christos Exp $ */
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/*-
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* Copyright (c) 1988, 1989, 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Adam de Boor.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*-
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* Copyright (c) 1989 by Berkeley Softworks
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
|
|
* Adam de Boor.
|
|
*
|
|
* 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.
|
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* 3. All advertising materials mentioning features or use of this software
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|
* must display the following acknowledgement:
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* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef MAKE_NATIVE
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static char rcsid[] = "$NetBSD: str.c,v 1.42 2020/05/06 02:30:10 christos Exp $";
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#else
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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)str.c 5.8 (Berkeley) 6/1/90";
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#else
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__RCSID("$NetBSD: str.c,v 1.42 2020/05/06 02:30:10 christos Exp $");
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#endif
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#endif /* not lint */
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#endif
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#include "make.h"
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/*-
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* str_concat --
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* concatenate the two strings, inserting a space or slash between them,
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* freeing them if requested.
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*
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* returns --
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* the resulting string in allocated space.
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*/
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char *
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str_concat(const char *s1, const char *s2, int flags)
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{
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int len1, len2;
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char *result;
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|
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/* get the length of both strings */
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len1 = strlen(s1);
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len2 = strlen(s2);
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/* allocate length plus separator plus EOS */
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result = bmake_malloc((unsigned int)(len1 + len2 + 2));
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|
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/* copy first string into place */
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memcpy(result, s1, len1);
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|
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/* add separator character */
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if (flags & STR_ADDSPACE) {
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result[len1] = ' ';
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++len1;
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} else if (flags & STR_ADDSLASH) {
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result[len1] = '/';
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++len1;
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}
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/* copy second string plus EOS into place */
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memcpy(result + len1, s2, len2 + 1);
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return(result);
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}
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|
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/*-
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* brk_string --
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* Fracture a string into an array of words (as delineated by tabs or
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* spaces) taking quotation marks into account. Leading tabs/spaces
|
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* are ignored.
|
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*
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* If expand is TRUE, quotes are removed and escape sequences
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* such as \r, \t, etc... are expanded.
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*
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* returns --
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* Pointer to the array of pointers to the words.
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* Memory containing the actual words in *store_words_buf.
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* Both of these must be free'd by the caller.
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* Number of words in *store_words_len.
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*/
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char **
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brk_string(const char *str, int *store_words_len, Boolean expand,
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char **store_words_buf)
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{
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char inquote;
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const char *str_p;
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size_t str_len;
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char **words;
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int words_len;
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int words_cap = 50;
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char *words_buf, *word_start, *word_end;
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/* skip leading space chars. */
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for (; *str == ' ' || *str == '\t'; ++str)
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continue;
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/* words_buf holds the words, separated by '\0'. */
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str_len = strlen(str);
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words_buf = bmake_malloc(strlen(str) + 1);
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words_cap = MAX((str_len / 5), 50);
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words = bmake_malloc((words_cap + 1) * sizeof(char *));
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/*
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* copy the string; at the same time, parse backslashes,
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* quotes and build the word list.
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*/
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words_len = 0;
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inquote = '\0';
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word_start = word_end = words_buf;
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for (str_p = str;; ++str_p) {
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char ch = *str_p;
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switch(ch) {
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case '"':
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case '\'':
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if (inquote) {
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if (inquote == ch)
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inquote = '\0';
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else
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break;
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}
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else {
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inquote = (char) ch;
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/* Don't miss "" or '' */
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if (word_start == NULL && str_p[1] == inquote) {
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if (!expand) {
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word_start = word_end;
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*word_end++ = ch;
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} else
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word_start = word_end + 1;
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str_p++;
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inquote = '\0';
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break;
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}
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}
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if (!expand) {
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if (word_start == NULL)
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word_start = word_end;
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*word_end++ = ch;
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}
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continue;
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case ' ':
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case '\t':
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case '\n':
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if (inquote)
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break;
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if (word_start == NULL)
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continue;
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/* FALLTHROUGH */
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case '\0':
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/*
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* end of a token -- make sure there's enough words
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* space and save off a pointer.
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*/
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if (word_start == NULL)
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goto done;
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*word_end++ = '\0';
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if (words_len == words_cap) {
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words_cap *= 2; /* ramp up fast */
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words = (char **)bmake_realloc(words,
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(words_cap + 1) * sizeof(char *));
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}
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words[words_len++] = word_start;
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word_start = NULL;
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if (ch == '\n' || ch == '\0') {
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if (expand && inquote) {
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free(words);
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free(words_buf);
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*store_words_buf = NULL;
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return NULL;
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}
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goto done;
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}
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continue;
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case '\\':
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if (!expand) {
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if (word_start == NULL)
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word_start = word_end;
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*word_end++ = '\\';
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/* catch '\' at end of line */
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if (str_p[1] == '\0')
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continue;
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ch = *++str_p;
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break;
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}
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switch (ch = *++str_p) {
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case '\0':
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case '\n':
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/* hmmm; fix it up as best we can */
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ch = '\\';
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--str_p;
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break;
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case 'b':
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ch = '\b';
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break;
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case 'f':
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ch = '\f';
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break;
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case 'n':
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ch = '\n';
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break;
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case 'r':
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ch = '\r';
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break;
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case 't':
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ch = '\t';
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break;
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}
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break;
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}
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if (word_start == NULL)
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word_start = word_end;
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*word_end++ = ch;
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}
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done: words[words_len] = NULL;
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*store_words_len = words_len;
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*store_words_buf = words_buf;
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return words;
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}
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|
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/*
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* Str_FindSubstring -- See if a string contains a particular substring.
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*
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* Input:
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* string String to search.
|
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* substring Substring to find in string.
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*
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* Results: If string contains substring, the return value is the location of
|
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* the first matching instance of substring in string. If string doesn't
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* contain substring, the return value is NULL. Matching is done on an exact
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* character-for-character basis with no wildcards or special characters.
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*
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* Side effects: None.
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*/
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char *
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Str_FindSubstring(const char *string, const char *substring)
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{
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const char *a, *b;
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|
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/*
|
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* First scan quickly through the two strings looking for a single-
|
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* character match. When it's found, then compare the rest of the
|
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* substring.
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*/
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for (b = substring; *string != 0; string += 1) {
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if (*string != *b)
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continue;
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a = string;
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for (;;) {
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if (*b == 0)
|
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return UNCONST(string);
|
|
if (*a++ != *b++)
|
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break;
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}
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b = substring;
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}
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return NULL;
|
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}
|
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|
|
/*
|
|
* Str_Match --
|
|
*
|
|
* See if a particular string matches a particular pattern.
|
|
*
|
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* Results: Non-zero is returned if string matches pattern, 0 otherwise. The
|
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* matching operation permits the following special characters in the
|
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* pattern: *?\[] (see the man page for details on what these mean).
|
|
*
|
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* XXX this function does not detect or report malformed patterns.
|
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*
|
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* Side effects: None.
|
|
*/
|
|
int
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Str_Match(const char *string, const char *pattern)
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|
{
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char c2;
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|
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for (;;) {
|
|
/*
|
|
* See if we're at the end of both the pattern and the
|
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* string. If, we succeeded. If we're at the end of the
|
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* pattern but not at the end of the string, we failed.
|
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*/
|
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if (*pattern == 0)
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return(!*string);
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if (*string == 0 && *pattern != '*')
|
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return(0);
|
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/*
|
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* Check for a "*" as the next pattern character. It matches
|
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* any substring. We handle this by calling ourselves
|
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* recursively for each postfix of string, until either we
|
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* match or we reach the end of the string.
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*/
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if (*pattern == '*') {
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pattern += 1;
|
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if (*pattern == 0)
|
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return(1);
|
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while (*string != 0) {
|
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if (Str_Match(string, pattern))
|
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return(1);
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++string;
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}
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return(0);
|
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}
|
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/*
|
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* Check for a "?" as the next pattern character. It matches
|
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* any single character.
|
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*/
|
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if (*pattern == '?')
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goto thisCharOK;
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/*
|
|
* Check for a "[" as the next pattern character. It is
|
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* followed by a list of characters that are acceptable, or
|
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* by a range (two characters separated by "-").
|
|
*/
|
|
if (*pattern == '[') {
|
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int nomatch;
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++pattern;
|
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if (*pattern == '^') {
|
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++pattern;
|
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nomatch = 1;
|
|
} else
|
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nomatch = 0;
|
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for (;;) {
|
|
if ((*pattern == ']') || (*pattern == 0)) {
|
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if (nomatch)
|
|
break;
|
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return(0);
|
|
}
|
|
if (*pattern == *string)
|
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break;
|
|
if (pattern[1] == '-') {
|
|
c2 = pattern[2];
|
|
if (c2 == 0)
|
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return(nomatch);
|
|
if ((*pattern <= *string) &&
|
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(c2 >= *string))
|
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break;
|
|
if ((*pattern >= *string) &&
|
|
(c2 <= *string))
|
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break;
|
|
pattern += 2;
|
|
}
|
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++pattern;
|
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}
|
|
if (nomatch && (*pattern != ']') && (*pattern != 0))
|
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return 0;
|
|
while ((*pattern != ']') && (*pattern != 0))
|
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++pattern;
|
|
if (*pattern == 0)
|
|
--pattern;
|
|
goto thisCharOK;
|
|
}
|
|
/*
|
|
* If the next pattern character is '/', just strip off the
|
|
* '/' so we do exact matching on the character that follows.
|
|
*/
|
|
if (*pattern == '\\') {
|
|
++pattern;
|
|
if (*pattern == 0)
|
|
return(0);
|
|
}
|
|
/*
|
|
* There's no special character. Just make sure that the
|
|
* next characters of each string match.
|
|
*/
|
|
if (*pattern != *string)
|
|
return(0);
|
|
thisCharOK: ++pattern;
|
|
++string;
|
|
}
|
|
}
|
|
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Str_SYSVMatch --
|
|
* Check word against pattern for a match (% is wild),
|
|
*
|
|
* Input:
|
|
* word Word to examine
|
|
* pattern Pattern to examine against
|
|
* len Number of characters to substitute
|
|
*
|
|
* Results:
|
|
* Returns the beginning position of a match or null. The number
|
|
* of characters matched is returned in len.
|
|
*
|
|
* Side Effects:
|
|
* None
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
char *
|
|
Str_SYSVMatch(const char *word, const char *pattern, size_t *len,
|
|
Boolean *hasPercent)
|
|
{
|
|
const char *p = pattern;
|
|
const char *w = word;
|
|
const char *m;
|
|
|
|
*hasPercent = FALSE;
|
|
if (*p == '\0') {
|
|
/* Null pattern is the whole string */
|
|
*len = strlen(w);
|
|
return UNCONST(w);
|
|
}
|
|
|
|
if ((m = strchr(p, '%')) != NULL) {
|
|
*hasPercent = TRUE;
|
|
if (*w == '\0') {
|
|
/* empty word does not match pattern */
|
|
return NULL;
|
|
}
|
|
/* check that the prefix matches */
|
|
for (; p != m && *w && *w == *p; w++, p++)
|
|
continue;
|
|
|
|
if (p != m)
|
|
return NULL; /* No match */
|
|
|
|
if (*++p == '\0') {
|
|
/* No more pattern, return the rest of the string */
|
|
*len = strlen(w);
|
|
return UNCONST(w);
|
|
}
|
|
}
|
|
|
|
m = w;
|
|
|
|
/* Find a matching tail */
|
|
do
|
|
if (strcmp(p, w) == 0) {
|
|
*len = w - m;
|
|
return UNCONST(m);
|
|
}
|
|
while (*w++ != '\0');
|
|
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Str_SYSVSubst --
|
|
* Substitute '%' on the pattern with len characters from src.
|
|
* If the pattern does not contain a '%' prepend len characters
|
|
* from src.
|
|
*
|
|
* Results:
|
|
* None
|
|
*
|
|
* Side Effects:
|
|
* Places result on buf
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Str_SYSVSubst(Buffer *buf, char *pat, char *src, size_t len,
|
|
Boolean lhsHasPercent)
|
|
{
|
|
char *m;
|
|
|
|
if ((m = strchr(pat, '%')) != NULL && lhsHasPercent) {
|
|
/* Copy the prefix */
|
|
Buf_AddBytes(buf, m - pat, pat);
|
|
/* skip the % */
|
|
pat = m + 1;
|
|
}
|
|
if (m != NULL || !lhsHasPercent) {
|
|
/* Copy the pattern */
|
|
Buf_AddBytes(buf, len, src);
|
|
}
|
|
|
|
/* append the rest */
|
|
Buf_AddBytes(buf, strlen(pat), pat);
|
|
}
|