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Diffstat (limited to 'cli.c')
| -rw-r--r-- | cli.c | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/cli.c b/cli.c new file mode 100644 index 0000000..816da7d --- /dev/null +++ b/cli.c @@ -0,0 +1,176 @@ +/** @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", PROG_NAME); + 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 variable has to be NULL.\n", + PROG_NAME, strerror(EINVAL)); + break; + case EDOM: + fprintf(stderr, "error: %s: %s. Valid numerals are: \"%s\".\n", + PROG_NAME, strerror(EDOM), from); + break; + case ERANGE: + fprintf(stderr, "error: %s: Unrepresentable void number.\n", PROG_NAME); + break; + } + if( !(status == EXIT_SUCCESS) ) + { + fprintf(stderr, "error: %s: Incapable of translating.\n", PROG_NAME); + 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; +} |