181 lines
5.1 KiB
C
181 lines
5.1 KiB
C
/*
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* Copyright (c) 2007-2014, Anthony Minessale II
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* All rights reserved.
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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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*
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* * 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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*
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* * 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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*
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* * Neither the name of the original author; nor the names of any 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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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
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* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* @defgroup config Config File Parser
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* @ingroup config
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* This module implements a basic interface and file format parser
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*
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* <pre>
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*
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* EXAMPLE
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*
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* [category1]
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* var1 => val1
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* var2 => val2
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* \# lines that begin with \# are comments
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* \#var3 => val3
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* </pre>
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* @{
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*/
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#ifndef ESL_CONFIG_H
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#define ESL_CONFIG_H
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#include "esl.h"
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#ifdef __cplusplus
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extern "C" {
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#endif /* defined(__cplusplus) */
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#define ESL_URL_SEPARATOR "://"
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#ifdef WIN32
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#define ESL_PATH_SEPARATOR "\\"
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#ifndef ESL_CONFIG_DIR
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#define ESL_CONFIG_DIR "c:\\openesl"
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#endif
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#define esl_is_file_path(file) (*(file +1) == ':' || *file == '/' || strstr(file, SWITCH_URL_SEPARATOR))
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#else
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#define ESL_PATH_SEPARATOR "/"
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#ifndef ESL_CONFIG_DIR
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#define ESL_CONFIG_DIR "/etc/openesl"
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#endif
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#define esl_is_file_path(file) ((*file == '/') || strstr(file, SWITCH_URL_SEPARATOR))
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#endif
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/*!
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\brief Evaluate the truthfullness of a string expression
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\param expr a string expression
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\return true or false
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*/
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static __inline__ int esl_true(const char *expr) {
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return (expr && (!strcasecmp(expr, "yes")
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|| !strcasecmp(expr, "on")
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|| !strcasecmp(expr, "true")
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|| !strcasecmp(expr, "enabled")
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|| !strcasecmp(expr, "active")
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|| !strcasecmp(expr, "allow")
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|| atoi(expr)));
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}
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/*!
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\brief Evaluate the falsefullness of a string expression
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\param expr a string expression
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\return true or false
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*/
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static __inline__ int esl_false(const char *expr) {
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return (expr && (!strcasecmp(expr, "no")
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|| !strcasecmp(expr, "off")
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|| !strcasecmp(expr, "false")
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|| !strcasecmp(expr, "disabled")
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|| !strcasecmp(expr, "inactive")
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|| !strcasecmp(expr, "disallow")
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|| !atoi(expr)));
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}
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typedef struct esl_config esl_config_t;
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/*! \brief A simple file handle representing an open configuration file **/
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struct esl_config {
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/*! FILE stream buffer to the opened file */
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FILE *file;
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/*! path to the file */
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char path[1024];
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/*! current category */
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char category[256];
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/*! current section */
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char section[256];
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/*! buffer of current line being read */
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char buf[1024];
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/*! current line number in file */
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int lineno;
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/*! current category number in file */
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int catno;
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/*! current section number in file */
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int sectno;
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int lockto;
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};
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/*!
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\brief Open a configuration file
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\param cfg (esl_config_t *) config handle to use
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\param file_path path to the file
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\return 1 (true) on success 0 (false) on failure
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*/
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ESL_DECLARE(int) esl_config_open_file(esl_config_t * cfg, const char *file_path);
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/*!
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\brief Close a previously opened configuration file
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\param cfg (esl_config_t *) config handle to use
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*/
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ESL_DECLARE(void) esl_config_close_file(esl_config_t * cfg);
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/*!
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\brief Retrieve next name/value pair from configuration file
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\param cfg (esl_config_t *) config handle to use
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\param var pointer to aim at the new variable name
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\param val pointer to aim at the new value
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*/
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ESL_DECLARE(int) esl_config_next_pair(esl_config_t * cfg, char **var, char **val);
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/*!
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\brief Retrieve the CAS bits from a configuration string value
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\param strvalue pointer to the configuration string value (expected to be in format whatever:xxxx)
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\param outbits pointer to aim at the CAS bits
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*/
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ESL_DECLARE(int) esl_config_get_cas_bits(char *strvalue, unsigned char *outbits);
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/** @} */
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#ifdef __cplusplus
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}
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#endif /* defined(__cplusplus) */
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#endif /* defined(ESL_CONFIG_H) */
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/* For Emacs:
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* Local Variables:
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* mode:c
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* indent-tabs-mode:t
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* tab-width:4
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* c-basic-offset:4
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* End:
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* For VIM:
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* vim:set softtabstop=4 shiftwidth=4 tabstop=4 noet:
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*/
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