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Added some pattern matching logic

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1972 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2009-07-11 13:59:42 +00:00
parent 45659df160
commit bfd2dc6cd1
5 changed files with 240 additions and 7 deletions
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3
include/nuttx/lib.h
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@ -1,7 +1,8 @@
/****************************************************************************
* include/nuttx/lib.h
* Non-standard, internal APIs available in lib/.
*
* Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
* Copyright (C) 2007-2009 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without

86
include/nuttx/regex.h Normal file
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@ -0,0 +1,86 @@
/****************************************************************************
* include/nuttx/regex.h
* Non-standard, pattern-matching APIs available in lib/.
*
* Copyright (C) 2009 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* 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 NuttX 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 COPYRIGHT HOLDERS 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
* COPYRIGHT OWNER 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 __INCLUDE_NUTTX_REGEX_H
#define __INCLUDE_NUTTX_REGEX_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/fs.h>
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/****************************************************************************
* Global Function Prototypes
****************************************************************************/
/****************************************************************************
* Global Function Prototypes
****************************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
/****************************************************************************
* Name: match
*
* Description:
* Simple shell-style filename pattern matcher written by Jef Poskanzer
* (See copyright notice in lib/lib_match.c). This pattern matcher only
* handles '?', '*' and '**', and multiple patterns separated by '|'.
*
* Returned Value:
* Returns 1 (match) or 0 (no-match).
*
****************************************************************************/
EXTERN int match(const char *pattern, const char *string);
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __INCLUDE_NUTTX_REGEX_H */

6
lib/Makefile
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@ -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)

4
lib/lib_dbg.c
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@ -33,10 +33,6 @@
*
****************************************************************************/
/****************************************************************************
* Compilation Switches
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/

148
lib/lib_match.c Normal file
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@ -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;
}
}