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author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2009-07-11 13:59:42 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2009-07-11 13:59:42 +0000 |
commit | 4a528af5569e0385555ac4f5de09677f6bcef754 (patch) | |
tree | 7e95e34b58cca8499aba379849d0a64796ad6cb7 /nuttx/lib | |
parent | aa23189211765d52c42c4bd73fd7007bed71c3c4 (diff) | |
download | px4-nuttx-4a528af5569e0385555ac4f5de09677f6bcef754.tar.gz px4-nuttx-4a528af5569e0385555ac4f5de09677f6bcef754.tar.bz2 px4-nuttx-4a528af5569e0385555ac4f5de09677f6bcef754.zip |
Added some pattern matching logic
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1972 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/lib')
-rw-r--r-- | nuttx/lib/Makefile | 6 | ||||
-rw-r--r-- | nuttx/lib/lib_dbg.c | 4 | ||||
-rw-r--r-- | nuttx/lib/lib_match.c | 148 |
3 files changed, 152 insertions, 6 deletions
diff --git a/nuttx/lib/Makefile b/nuttx/lib/Makefile index 14af7fe33..e00eb5c8c 100644 --- a/nuttx/lib/Makefile +++ b/nuttx/lib/Makefile @@ -87,6 +87,8 @@ NET_SRCS = lib_htons.c lib_htonl.c lib_inetntoa.c lib_etherntoa.c LIBGEN_SRCS = lib_basename.c lib_dirname.c +REGEX_SRCS = lib_match.c + SQ_SRCS = sq_addlast.c sq_addfirst.c sq_addafter.c \ sq_rem.c sq_remlast.c sq_remfirst.c sq_remafter.c @@ -96,8 +98,8 @@ DQ_SRCS = dq_addlast.c dq_addfirst.c dq_addafter.c dq_addbefore.c \ DBG_SRCS = lib_dbg.c lib_dumpbuffer.c CSRCS = $(MISC_SRCS) $(STRING_SRCS) $(CTYPE_SRCS) $(STDIO_SRCS) $(STDLIB_SRCS) \ - $(MATH_SRCS) $(UNISTD_SRCS) $(NET_SRCS) $(LIBGEN_SRCS) $(SQ_SRCS) \ - $(DQ_SRCS) $(DBG_SRCS) + $(MATH_SRCS) $(UNISTD_SRCS) $(NET_SRCS) $(LIBGEN_SRCS) $(REGEX_SRCS) \ + $(SQ_SRCS) $(DQ_SRCS) $(DBG_SRCS) COBJS = $(CSRCS:.c=$(OBJEXT)) SRCS = $(ASRCS) $(CSRCS) diff --git a/nuttx/lib/lib_dbg.c b/nuttx/lib/lib_dbg.c index 6b8edd126..b1c66adf4 100644 --- a/nuttx/lib/lib_dbg.c +++ b/nuttx/lib/lib_dbg.c @@ -34,10 +34,6 @@ ****************************************************************************/ /**************************************************************************** - * Compilation Switches - ****************************************************************************/ - -/**************************************************************************** * Included Files ****************************************************************************/ diff --git a/nuttx/lib/lib_match.c b/nuttx/lib/lib_match.c new file mode 100644 index 000000000..e76e8b4ca --- /dev/null +++ b/nuttx/lib/lib_match.c @@ -0,0 +1,148 @@ +/**************************************************************************** + * match.c - simple shell-style filename matcher + * + * Simple shell-style filename pattern matcher written by Jef Poskanzer + * This pattern matcher only handles '?', '*' and '**', and multiple + * patterns separated by '|'. + * + * Copyright © 1995,2000 by Jef Poskanzer <jef@mail.acme.com>. + * All rights reserved. + * + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <string.h> +#include <nuttx/regex.h> + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: match_one + * + * Description: + * Does all of the work for one '|' delimited pattern + * + * Returned Value: + * Returns 1 (match) or 0 (no-match). + * + ****************************************************************************/ + +static int match_one(const char *pattern, int patlen, const char *string) +{ + const char *p; + int pl; + int i; + + for (p = pattern; p - pattern < patlen; p++, string++) + { + if (*p == '?' && *string != '\0') + { + continue; + } + + if (*p == '*') + { + p++; + if (*p == '*') + { + /* Double-wildcard matches anything. */ + + p++; + i = strlen(string); + } + else + { + /* Single-wildcard matches anything but slash. */ + + i = strcspn(string, "/"); + } + + pl = patlen - (p - pattern); + for (; i >= 0; i--) + { + if (match_one(p, pl, &(string[i]))) + { + return 1; + } + } + return 0; + } + + if (*p != *string) + { + return 0; + } + } + + if (*string == '\0') + { + return 1; + } + return 0; +} + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: match + * + * Description: + * Simple shell-style filename pattern matcher written by Jef Poskanzer + * This pattern matcher only handles '?', '*' and '**', and multiple + * patterns separated by '|'. + * + * Returned Value: + * Returns 1 (match) or 0 (no-match). + * + ****************************************************************************/ + +int match(const char *pattern, const char *string) +{ + const char *or; + + for (;;) + { + or = strchr(pattern, '|'); + if (or == (char *)0) + { + return match_one(pattern, strlen(pattern), string); + } + + if (match_one(pattern, or - pattern, string)) + { + return 1; + } + + pattern = or + 1; + } +} + |