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/**
* @file rtems/bspcmdline.h
*
* This include file contains all prototypes and specifications
* related to the BSP Command Line String and associated helper
* routines. The helpers are useful for locating command line
* type arguments (e.g. --mode) and their associated right
* hand side (e.g. FAST in --mode=FAST).
*/
/*
* COPYRIGHT (c) 1989-2009.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*/
#ifndef __BSP_COMMAND_LINE_h
#define __BSP_COMMAND_LINE_h
/**
* @defgroup BSPCommandLine BSP Command Line Helpers
*
* The BSP Command Line Handler provides a set of routines which assist
* in examining and decoding the Command Line String passed to the BSP
* at boot time.
*/
/**@{*/
#include <stddef.h> /* for size_t */
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Obtain Pointer to BSP Boot Command String
*
* This method returns a pointer to the BSP Boot Command String. It
* is as likely to be NULL as point to a string as most BSPs do not
* have a start environment that provides a boot string.
*
* @return This method returns the pointer to the BSP Boot Command String.
*/
const char *rtems_bsp_cmdline_get(void);
/**
* @brief Obtain COPY of the Entire Matching Argument
*
* This method searches for the argument @a name in the BSP Boot Command
* String and returns a copy of the entire string associated with it in
* @a value up to a string of @a length. This will include the argument
* and any right hand side portion of the string. For example, one might
* be returned --mode=FAST if
* searching for --mode.
*
* @param[in] name is the arugment to search for
* @param[in] value points to where the contents will
* be placed if located.
* @param[in] length is the maximum length to copy
*
* @return This method returns NULL if not found and
* @a value if found.
*/
const char *rtems_bsp_cmdline_get_param(
const char *name,
char *value,
size_t length
);
/**
* @brief Obtain COPY of the Right Hand Side of the Matching Argument
*
* This method searches for the argument @a name in
* the BSP Boot Command String and returns the right hand side
* associated with it in @a value up to a maximum string @a length.
* This will NOT include the argument but only any right hand side
* portion of the string. * For example, one might be returned FAST if
* searching for --mode.
*
* @param[in] name is the arugment to search for
* @param[in] value points to where the contents will
* be placed if located.
* @param[in] length is the maximum length to copy
*
* @return This method returns NULL if not found and
* @a value if found.
*/
const char *rtems_bsp_cmdline_get_param_rhs(
const char *name,
char *value,
size_t length
);
/**
* @brief Obtain Pointer to the Entire Matching Argument
*
* This method searches for the argument @a name in
* the BSP Boot Command String and returns a pointer to the
* entire string associated with it. This will include the
* argument and any right hand side portion of the string.
* For example, one might be returned --mode=FAST if
* searching for --mode.
*
* @param[in] name is the arugment to search for
*
* @return This method returns NULL if not found and a pointer
* into the BSP Boot Command String if found.
*
* @note The pointer will be to the original BSP Command
* Line string. Exercise caution when using this.
*/
const char *rtems_bsp_cmdline_get_param_raw(
const char *name
);
#ifdef __cplusplus
}
#endif
/**@}*/
#endif
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