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#include <stdio.h>
#include <string.h>
#include <stdbool.h>
#include "cli/args.h"
#define HDASS_VERSION "0.1.0"
static bool match_assembler(const char* name, enum Assembler* out)
{
if (strcmp(name, "nasm") == 0)
{
*out = ASSEMBLER_NASM;
return true;
}
if (strcmp(name, "fasm") == 0)
{
*out = ASSEMBLER_FASM;
return true;
}
if (strcmp(name, "masm") == 0)
{
*out = ASSEMBLER_MASM;
return true;
}
return false;
}
void print_version(void)
{
printf("hdass %s\n", HDASS_VERSION);
}
void print_usage(const char* program)
{
printf("hachem's dumb assembly super set\n\n");
printf("usage: %s <input.hdass> [options]\n\n", program);
printf("options:\n");
printf(" -o, --output <file> write output to <file> (default: stdout)\n");
printf(" -t, --target <name> target assembler: nasm, fasm, masm (default: nasm)\n");
printf(" -h, --help print this help and exit\n");
printf(" -v, --version print version and exit\n");
}
enum ParseResult parse_args(int argc, char** argv, struct Args* args)
{
const char* program = argv[0];
args->input_path = NULL;
args->output_path = NULL;
args->target = ASSEMBLER_NASM;
for (int i = 1; i < argc; i += 1)
{
const char* arg = argv[i];
if (strcmp(arg, "-h") == 0 || strcmp(arg, "--help") == 0)
{
print_usage(program);
return PARSE_EXIT;
}
if (strcmp(arg, "-v") == 0 || strcmp(arg, "--version") == 0)
{
print_version();
return PARSE_EXIT;
}
if (strcmp(arg, "-o") == 0 || strcmp(arg, "--output") == 0)
{
i += 1;
if (i >= argc)
{
fprintf(stderr, "error: '%s' requires an argument\n", arg);
return PARSE_ERROR;
}
args->output_path = argv[i];
continue;
}
if (strcmp(arg, "-t") == 0 || strcmp(arg, "--target") == 0)
{
i += 1;
if (i >= argc)
{
fprintf(stderr, "error: '%s' requires an argument\n", arg);
return PARSE_ERROR;
}
if (!match_assembler(argv[i], &args->target))
{
fprintf(stderr, "error: unknown target '%s'\n", argv[i]);
return PARSE_ERROR;
}
continue;
}
if (arg[0] == '-')
{
fprintf(stderr, "error: unknown option '%s'\n", arg);
return PARSE_ERROR;
}
if (args->input_path != NULL)
{
fprintf(stderr, "error: multiple input files given ('%s' and '%s')\n", args->input_path, arg);
return PARSE_ERROR;
}
args->input_path = arg;
}
if (args->input_path == NULL)
{
fprintf(stderr, "error: no input file given\n");
return PARSE_ERROR;
}
return PARSE_OK;
}
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