command.h File Reference

#include <ipxe/tables.h>

Go to the source code of this file.

Data Structures
struct	command
	A command-line command. More...

Macros
#define	COMMANDS   __table ( struct command, "commands" )
#define	__command(name)   __table_entry ( COMMANDS, _C2 ( 01., name ) )
#define	COMMAND(name, exec)

Functions
	FILE_LICENCE (GPL2_OR_LATER_OR_UBDL)
char *	concat_args (char **args)
	Concatenate arguments. More...

Macro Definition Documentation

COMMANDS

#define COMMANDS   __table ( struct command, "commands" )

Definition at line 22 of file command.h.

__command

#define __command

(

name

)

__table_entry ( COMMANDS, _C2 ( 01., name ) )

Definition at line 24 of file command.h.

COMMAND

#define COMMAND	(		name,
			exec
	)

Value:

struct command name ## _command __command ( name ) = {          \
                #name, exec                                             \
        }

Definition at line 26 of file command.h.

Function Documentation

FILE_LICENCE()

FILE_LICENCE

(

GPL2_OR_LATER_OR_UBDL

)

concat_args()

char* concat_args

(

char **

args

)

Concatenate arguments.

Parameters

args	Argument list (NULL-terminated)

Return values

string

Concatenated arguments

The returned string is allocated with malloc(). The caller is responsible for eventually free()ing this string.

Definition at line 358 of file exec.c.

                                   {
        char **arg;
        size_t len;
        char *string;
        char *ptr;

        /* Calculate total string length */
        len = 1 /* NUL */;
        for ( arg = args ; *arg ; arg++ )
                len += ( 1 /* possible space */ + strlen ( *arg ) );

        /* Allocate string */
        string = zalloc ( len );
        if ( ! string )
                return NULL;

        /* Populate string */
        ptr = string;
        for ( arg = args ; *arg ; arg++ ) {
                ptr += sprintf ( ptr, "%s%s",
                                 ( ( arg == args ) ? "" : " " ), *arg );
        }
        assert ( ptr < ( string + len ) );

        return string;
}

References assert(), len, NULL, sprintf, string, strlen(), and zalloc().

Referenced by dynui_exec(), echo_exec(), imgsingle_exec(), item_exec(), param_exec(), prompt_exec(), and set_value().