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#include "kpl.h"
static kpl_config default_config = {
.argc = -1, .main_module_arg_index = -1,
.argv = NULL, .module_extension = ".kpl",
.flags = 0,
.io = {
.queue_pow = KPL_IO_QUEUE_POW_DEFAULT
},
.thread = {
.count = -1
}
};
void kpl_config_init(kpl_config *config) {
memcpy(config, &default_config, sizeof(kpl_config));
}
typedef int32_t kpl_arg_match_fn(const char *match_str, const int32_t match_str_index, kpl_config *config);
typedef struct {
const char *match_str, *help_message;
kpl_arg_match_fn *arg_match_fn;
} kpl_arg_match;
static int32_t kpl_arg_match_module_extension(const char *match_str, const int32_t match_str_index, kpl_config *config) {
config->module_extension = match_str + match_str_index;
return KPL_EXIT_CODE_SUCCESS;
}
static int32_t kpl_arg_match_eval(const char *match_str, const int32_t match_str_index, kpl_config *config) {
(void) match_str;
(void) match_str_index;
config->flags |= KPL_CONFIG_FLAG_EVAL;
return KPL_EXIT_CODE_SUCCESS;
}
static int32_t kpl_arg_match_repl(const char *match_str, const int32_t match_str_index, kpl_config *config) {
(void) match_str;
(void) match_str_index;
config->flags |= KPL_CONFIG_FLAG_REPL;
return KPL_EXIT_CODE_SUCCESS;
}
static int32_t kpl_arg_match_io_queue_pow(const char *match_str, const int32_t match_str_index, kpl_config *config) {
int32_t queue_pow = atoi(match_str + match_str_index);
if (queue_pow < KPL_IO_QUEUE_POW_MIN || queue_pow > KPL_IO_QUEUE_POW_MAX)
return KPL_EXIT_CODE_ERROR;
config->io.queue_pow = queue_pow;
return KPL_EXIT_CODE_SUCCESS;
}
static int32_t kpl_arg_match_thread_count(const char *match_str, const int32_t match_str_index, kpl_config *config) {
int32_t thread_count = atoi(match_str + match_str_index);
if (!thread_count)
return KPL_EXIT_CODE_ERROR;
config->thread.count = thread_count;
return KPL_EXIT_CODE_SUCCESS;
}
static int32_t kpl_arg_match_help(const char *match_str, const int32_t match_str_index, kpl_config *config);
static kpl_arg_match arg_match_array[] = {
{
.match_str = "--module-extension=",
.help_message="[WORD], Change the module extension for imports (default .kpl)",
.arg_match_fn = kpl_arg_match_module_extension
},
{
.match_str = "--eval",
.help_message = " [STRING...], Evaluate next argument(s) as modules",
.arg_match_fn = kpl_arg_match_eval
},
{
.match_str = "--io-queue-pow=",
.help_message = "[NUMBER], Power of two for calculating the size of the io_uring queue",
.arg_match_fn = kpl_arg_match_io_queue_pow
},
{
.match_str = "--thread-count=",
.help_message = "[NUMBER], Number of running threads, minimum is 1",
.arg_match_fn = kpl_arg_match_thread_count
},
{
.match_str = "--repl",
.help_message = ", Start (R)ead, (E)valuate, (P)rint, (L)oop",
.arg_match_fn = kpl_arg_match_repl
},
{ .match_str = "--help", .help_message = ", Show help", .arg_match_fn = kpl_arg_match_help },
{ .match_str = NULL, .help_message = NULL, .arg_match_fn = NULL }
};
static int32_t kpl_arg_match_help(const char *match_str, const int32_t match_str_index, kpl_config *config) {
(void) match_str;
(void) match_str_index;
printf("\nUsage " KPL_COLOR(BOLD) "%s" KPL_COLOR(RESET) KPL_COLOR(WHITE) " [OPTIONS] [MODULE]" KPL_COLOR(RESET)
KPL_COLOR(BOLD) "%s\n\n" KPL_COLOR(RESET), config->argv[0], config->module_extension);
printf("Where " KPL_COLOR(WHITE) "[OPTIONS]" KPL_COLOR(RESET) " are:\n");
const kpl_arg_match *match_array = arg_match_array;
while (match_array->match_str) {
printf(KPL_COLOR(LIGHT_YELLOW) "\t%s" KPL_COLOR(RESET) "%s\n",
match_array->match_str, match_array->help_message);
match_array++;
}
putchar('\n');
return KPL_EXIT_CODE_HELP;
}
static bool kpl_valid_match_str_index(const char *match_str_array, const char *match_str_arg, int32_t match_str_index) {
return match_str_array[match_str_index] &&
match_str_array[match_str_index] == match_str_arg[match_str_index];
}
static bool kpl_valid_match_str(const char *match_str_array, const char *match_str_arg, int32_t match_str_index) {
return !match_str_array[match_str_index] && (!match_str_arg[match_str_index] ||
(match_str_arg[match_str_index] && match_str_array[match_str_index - 1] == '='));
}
bool kpl_config_valid_module_exension(kpl_config *config, const char *module_name) {
size_t name_length = strlen(module_name), module_extension_length = strlen(config->module_extension);
return name_length > module_extension_length &&
strcmp(module_name + name_length - module_extension_length, config->module_extension) == 0;
}
int32_t kpl_config_parse_args(kpl_config *config, const int32_t argc, const char *argv[]) {
config->argc = argc;
config->argv = argv;
if (argc == 1) {
printf(KPL_COLOR(LIGHT_RED) "\nNo Module Specified\n" KPL_COLOR(RESET));
return kpl_arg_match_help(NULL, 0, config);
}
int32_t arg_index = 1;
while (arg_index < argc && !config->flags) {
int32_t match_str_index = 0;
const char *match_str_arg = argv[arg_index];
const kpl_arg_match *match_array = arg_match_array;
while (match_array->match_str) {
while (kpl_valid_match_str_index(match_array->match_str, match_str_arg, match_str_index))
match_str_index++;
if (kpl_valid_match_str(match_array->match_str, match_str_arg, match_str_index)) {
int32_t exit_status = match_array->arg_match_fn(match_str_arg, match_str_index, config);
if (exit_status != KPL_EXIT_CODE_SUCCESS) {
if (exit_status == KPL_EXIT_CODE_ERROR)
printf(KPL_COLOR(LIGHT_RED) "\nInvalid Option: " KPL_COLOR(BOLD) "%s\n" KPL_COLOR(RESET),
match_str_arg);
return exit_status;
}
break;
}
match_str_index = 0;
match_array++;
}
if (!match_array->match_str)
break;
arg_index++;
}
config->main_module_arg_index = arg_index;
if (config->flags) {
if ((config->flags & KPL_CONFIG_FLAG_EVAL) && argc - arg_index < 1) {
printf(KPL_COLOR(LIGHT_RED) "\nInvalid EVAL\n" KPL_COLOR(RESET));
return kpl_arg_match_help(NULL, 0, config);
}
if ((config->flags & KPL_CONFIG_FLAG_REPL) && argc != arg_index) {
printf(KPL_COLOR(LIGHT_RED) "\nInvalid REPL\n" KPL_COLOR(RESET));
return kpl_arg_match_help(NULL, 0, config);
}
return KPL_EXIT_CODE_SUCCESS;
}
if (!kpl_config_valid_module_exension(config, argv[arg_index])) {
printf(KPL_COLOR(LIGHT_RED) "\nInvalid " KPL_COLOR(RESET)
KPL_COLOR(WHITE) "[OPTION]/[MODULE]: " KPL_COLOR(RESET)
KPL_COLOR2(BOLD, LIGHT_RED) "%s\n" KPL_COLOR(RESET), argv[arg_index]);
return kpl_arg_match_help(NULL, 0, config);
}
return KPL_EXIT_CODE_SUCCESS;
}
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