/**
* \brief Process compiler options.
* \param argc The number of input parameters.
* \param argv The input parameter strings.
* \return Indicates if processing was successful.
* 0 = processing successful
* 1 = processing not successful
*
* Processes the input options passed to the compiler
* and fill the compiler options structure as appropriate.
*
* The following options are supported:
* -h: print help
* -p: print the IR to a file
* -t: test modus, only success/failure log
* -o: the output file name (different from 'input'.o)
*/
int process_options(int argc, char *argv[]) {
int opt;
int ret = 0;
/* add a handler to resource manager to free resources
* in the case of an error during option processing */
rm_register_handler(&resource_mgr, free_options, NULL);
while ((opt = getopt(argc, argv, "hpto:")) != -1) {
switch (opt) {
case 'p':
cc_options.print_ir = 1;
break;
case 't':
/* fewer logs, for automated testing */
cc_options.print_only_errors = 1;
break;
case 'o':
/* output file */
cc_options.output_file = strdup(optarg);
if (cc_options.output_file == NULL) {
fatal_os_error(OUT_OF_MEMORY, 1, __FILE__, __LINE__, "");
return 1;
}
break;
case 'h':
/* print help */
print_usage(argv[0]);
rm_cleanup_resources(&resource_mgr);
exit(EXIT_SUCCESS);
default: /* '?' */
/* print usage */
fprintf(stderr, "ERROR: unknown parameter: %s\n", argv[optind]);
print_usage(argv[0]);
return 1;
}
}
if (optind >= argc) {
fprintf(stderr, "ERROR: missing input file\n");
print_usage(argv[0]);
ret = 1;
} else if (optind < argc - 1) {
fprintf(stderr, "ERROR: too many input files\n");
print_usage(argv[0]);
ret = 1;
} else {
cc_options.input_file = strdup(argv[optind]);
if (cc_options.input_file == NULL) {
fatal_os_error(OUT_OF_MEMORY, 1, __FILE__, __LINE__, "");
return 1;
}
char *filebase = get_file_basename(cc_options.input_file);
;
if (filebase == NULL) {
return 1;
}
if (!has_file_extension(cc_options.input_file, C_EXT)) {
fprintf(stderr, "ERROR: no C file (.c) as input\n");
ret = 1;
} else {
/* The file name has a valid .c extension */
if (cc_options.output_file == NULL) {
/* create output file name <input>.o */
cc_options.output_file = get_filename_with_ext(filebase,
OUTPUT_EXT);
if (cc_options.output_file == NULL) {
ret = 1;
}
}
if (cc_options.print_ir == 1) {
/* create IR file name <input>.ir */
cc_options.ir_file = get_filename_with_ext(filebase, IR_EXT);
if (cc_options.ir_file == NULL) {
ret = 1;
}
}
}
free(filebase);
}
return ret;
}
/**
* \brief Initialize the resource manager.
* \param mgr The memory area to be initialized.
*/
void rm_init (resource_mgr_t *mgr) {
mgr->num_entries = 0;
mgr->entries = NULL;
rm_register_handler(mgr, rm_cleanup, mgr);
}