/** @file cli.c
* Numericx command-line interface (CLI) program.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <errno.h>
#include "numericx.h"
/* ||COMPILATION FLAGS|| */
/**
* @name Compilation Flags
*
* These are the valid compilation flags for the definition of numerical systems.
* Use them to set the proprieties of the FROM and the TO numerical system, when
* compiling the cli executable.
*
* @{
*/
/**
* @param bool
*
* Configuration of the resulting numeral system
* to have the units place on the end of the writing direction (on the right).
*/
#ifndef TO_UNITS_ON_THE_END
#define TO_UNITS_ON_THE_END false
#endif
/**
* @param bool
*
* Configuration of the numeral system of the number input
* to have the units place on the end of the writing direction (on the right).
*/
#ifndef FROM_UNITS_ON_THE_END
#define FROM_UNITS_ON_THE_END false
#endif
/**
* @param bool
*
* Configuration of the resulting numeral system
* to start counting on the second number, being the
* first number void.
*/
#ifndef TO_FIRST_NUMBER_VOID
#define TO_FIRST_NUMBER_VOID false
#endif
/**
* @param bool
*
* Configuration of the numeral system of the number input
* to start counting on the second number, being the
* first number void.
*/
#ifndef FROM_FIRST_NUMBER_VOID
#define FROM_FIRST_NUMBER_VOID false
#endif
/**
* @param bool
*
* Configuration of the resulting numeral system
* to have the first number as an infinite number,
* for example, if the first number is 'A', then
* A == AA == AAA == AAAA ...
*/
#ifndef TO_INFINITE_BASE
#define TO_INFINITE_BASE false
#endif
/**
* @param bool
*
* Configuration of the numeral system of the number input
* to have the first number as an infinite number,
* for example, if the first number is 'A', then
* A == AA == AAA == AAAA ...
*/
#ifndef FROM_INFINITE_BASE
#define FROM_INFINITE_BASE false
#endif
/** @} */
/* ||MAIN FUNCTION|| */
/**
* @brief CLI program.
*
* This is a command-line interface program, that uses the 'numericx_*'
* functions. It receives one number argument from the command-line and
* prints the translated number, or an error message.
*
* @param argv[] - one number from the command-line.
*
* @return E2BIG in case of wrong number of arguments.
* @return EXIT_FAILURE in case of unsuccessful number translation.
* @return EXIT_SUCCESS in case of a successful number translation.
*/
int
main(int argc, char* argv[])
{
/* argument processing */
if( !(argc == 2) )
{
fprintf(stderr, "usage: %s <number>\n", "numericx");
return E2BIG;
}
/* Number variables to be converted */
char* number = argv[1];
/* Arguments for translation */
char* from = malloc( (strlen(FROM_NUMERICALS) + 1) * sizeof(char) );
char* to = malloc( (strlen(TO_NUMERICALS) + 1) * sizeof(char) );
strcpy(from, FROM_NUMERICALS);
strcpy(to, TO_NUMERICALS);
bool to_units_on_the_end = TO_UNITS_ON_THE_END;
bool from_units_on_the_end = FROM_UNITS_ON_THE_END;
bool to_first_number_void = TO_FIRST_NUMBER_VOID;
bool from_first_number_void = FROM_FIRST_NUMBER_VOID;
bool to_infinite_base = TO_INFINITE_BASE;
bool from_infinite_base = FROM_INFINITE_BASE;
/* Translation */
char* result = NULL;
int status = numericx_translate(
from, from_units_on_the_end, from_first_number_void, from_infinite_base,
to, to_units_on_the_end, to_first_number_void, to_infinite_base,
number, &result);
/* Test for translation failure */
switch( status )
{
case EINVAL:
fprintf(stderr, "error: %s: %s. Resulting string argument value has to be NULL.\n",
"numericx", strerror(EINVAL));
break;
case EDOM:
fprintf(stderr, "error: %s: %s. Valid numerals are: \"%s\".\n",
"numericx", strerror(EDOM), from);
break;
case ERANGE:
fprintf(stderr, "error: %s: Unrepresentable void number.\n", "numericx");
break;
}
if( !(status == true) )
{
fprintf(stderr, "error: %s: Incapable of translating.\n", "numericx");
free(from);
free(to);
numericx_free(result);
return EXIT_FAILURE;
}
/* Print */
printf("%s\n", result);
/* Free */
free(from);
free(to);
numericx_free(result);
return EXIT_SUCCESS;
}