#include <mruby.h>
#ifdef MRB_NO_STDIO
# error mruby-bin-mrbc conflicts 'MRB_NO_STDIO' in your build configuration
#endif
#include <stdlib.h>
#include <string.h>
#include <mruby/compile.h>
#include <mruby/dump.h>
#include <mruby/proc.h>
#include <mruby/internal.h>
#define RITEBIN_EXT ".mrb"
#define C_EXT ".c"
struct mrbc_args {
const char *prog;
const char *outfile;
const char *initname;
char **argv;
int argc;
int idx;
mrb_bool dump_struct : 1;
mrb_bool check_syntax : 1;
mrb_bool verbose : 1;
mrb_bool remove_lv : 1;
mrb_bool no_ext_ops : 1;
mrb_bool no_optimize : 1;
uint8_t flags : 2;
};
static void
usage(const char *name)
{
static const char *const usage_msg[] = {
"switches:",
"-c check syntax only",
"-o<outfile> place the output into <outfile>; required for multi-files",
"-v print version number, then turn on verbose mode",
"-g produce debugging information",
"-B<symbol> binary <symbol> output in C language format",
"-S dump C struct (requires -B)",
"-s define <symbol> as static variable",
"--remove-lv remove local variables",
"--no-ext-ops prohibit using OP_EXTs",
"--no-optimize disable peephole optimization",
"--verbose run at verbose mode",
"--version print the version",
"--copyright print the copyright",
NULL
};
const char *const *p = usage_msg;
printf("Usage: %s [switches] programfile...\n", name);
while (*p)
printf(" %s\n", *p++);
}
static char *
get_outfilename(mrb_state *mrb, char *infile, const char *ext)
{
size_t ilen, flen, elen;
char *outfile;
char *p = NULL;
ilen = strlen(infile);
flen = ilen;
if (*ext) {
elen = strlen(ext);
if ((p = strrchr(infile, '.'))) {
ilen = p - infile;
}
flen += elen;
}
else {
flen = ilen;
}
outfile = (char*)mrb_malloc(mrb, flen+1);
strncpy(outfile, infile, ilen+1);
if (p) {
strncpy(outfile+ilen, ext, elen+1);
}
return outfile;
}
static int
parse_args(mrb_state *mrb, int argc, char **argv, struct mrbc_args *args)
{
static const struct mrbc_args args_zero = { 0 };
int i;
*args = args_zero;
args->argc = argc;
args->argv = argv;
args->prog = argv[0];
for (i=1; i<argc; i++) {
if (argv[i][0] == '-') {
switch ((argv[i])[1]) {
case 'o':
if (args->outfile) {
fprintf(stderr, "%s: an output file is already specified. (%s)\n",
args->prog, args->outfile);
return -1;
}
if (argv[i][2] == '\0' && argv[i+1]) {
i++;
args->outfile = get_outfilename(mrb, argv[i], "");
}
else {
args->outfile = get_outfilename(mrb, argv[i] + 2, "");
}
break;
case 'S':
args->dump_struct = TRUE;
break;
case 'B':
if (argv[i][2] == '\0' && argv[i+1]) {
i++;
args->initname = argv[i];
}
else {
args->initname = argv[i]+2;
}
if (*args->initname == '\0') {
fprintf(stderr, "%s: function name is not specified.\n", args->prog);
return -1;
}
break;
case 'c':
args->check_syntax = TRUE;
break;
case 'v':
if (!args->verbose) mrb_show_version(mrb);
args->verbose = TRUE;
break;
case 'g':
args->flags |= MRB_DUMP_DEBUG_INFO;
break;
case 's':
args->flags |= MRB_DUMP_STATIC;
break;
case 'E':
case 'e':
fprintf(stderr, "%s: -e/-E option no longer needed.\n", args->prog);
break;
case 'h':
return -1;
case '-':
if (argv[i][1] == '\n') {
return i;
}
if (strcmp(argv[i] + 2, "version") == 0) {
mrb_show_version(mrb);
exit(EXIT_SUCCESS);
}
else if (strcmp(argv[i] + 2, "verbose") == 0) {
args->verbose = TRUE;
break;
}
else if (strcmp(argv[i] + 2, "copyright") == 0) {
mrb_show_copyright(mrb);
exit(EXIT_SUCCESS);
}
else if (strcmp(argv[i] + 2, "remove-lv") == 0) {
args->remove_lv = TRUE;
break;
}
else if (strcmp(argv[i] + 2, "no-ext-ops") == 0) {
args->no_ext_ops = TRUE;
break;
}
else if (strcmp(argv[i] + 2, "no-optimize") == 0) {
args->no_optimize = TRUE;
break;
}
return -1;
default:
return i;
}
}
else {
break;
}
}
return i;
}
static void
cleanup(mrb_state *mrb, struct mrbc_args *args)
{
mrb_free(mrb, (void*)args->outfile);
mrb_close(mrb);
}
static int
partial_hook(struct mrb_parser_state *p)
{
mrbc_context *c = p->cxt;
struct mrbc_args *args = (struct mrbc_args *)c->partial_data;
const char *fn;
if (p->f) fclose(p->f);
if (args->idx >= args->argc) {
p->f = NULL;
return -1;
}
fn = args->argv[args->idx++];
p->f = fopen(fn, "rb");
if (p->f == NULL) {
fprintf(stderr, "%s: cannot open program file. (%s)\n", args->prog, fn);
return -1;
}
mrb_parser_set_filename(p, fn);
return 0;
}
static mrb_value
load_file(mrb_state *mrb, struct mrbc_args *args)
{
mrbc_context *c;
mrb_value result;
char *input = args->argv[args->idx];
FILE *infile;
mrb_bool need_close = FALSE;
c = mrbc_context_new(mrb);
if (args->verbose)
c->dump_result = TRUE;
c->no_exec = TRUE;
c->no_ext_ops = args->no_ext_ops;
c->no_optimize = args->no_optimize;
if (input[0] == '-' && input[1] == '\0') {
infile = stdin;
}
else {
need_close = TRUE;
if ((infile = fopen(input, "rb")) == NULL) {
fprintf(stderr, "%s: cannot open program file. (%s)\n", args->prog, input);
return mrb_nil_value();
}
}
mrbc_filename(mrb, c, input);
args->idx++;
if (args->idx < args->argc) {
need_close = FALSE;
mrbc_partial_hook(mrb, c, partial_hook, (void*)args);
}
result = mrb_load_file_cxt(mrb, infile, c);
if (need_close) fclose(infile);
mrbc_context_free(mrb, c);
if (mrb_undef_p(result)) {
return mrb_nil_value();
}
return result;
}
static int
dump_file(mrb_state *mrb, FILE *wfp, const char *outfile, struct RProc *proc, struct mrbc_args *args)
{
int n = MRB_DUMP_OK;
const mrb_irep *irep = proc->body.irep;
if (args->remove_lv) {
mrb_irep_remove_lv(mrb, (mrb_irep*)irep);
}
if (args->initname) {
if (args->dump_struct) {
n = mrb_dump_irep_cstruct(mrb, irep, args->flags, wfp, args->initname);
}
else {
n = mrb_dump_irep_cfunc(mrb, irep, args->flags, wfp, args->initname);
}
if (n == MRB_DUMP_INVALID_ARGUMENT) {
fprintf(stderr, "%s: invalid C language symbol name\n", args->initname);
}
}
else {
n = mrb_dump_irep_binary(mrb, irep, args->flags, wfp);
}
if (n != MRB_DUMP_OK) {
fprintf(stderr, "%s: error in mrb dump (%s) %d\n", args->prog, outfile, n);
}
return n;
}
int
main(int argc, char **argv)
{
mrb_state *mrb = mrb_open_core(NULL, NULL);
int n, result;
struct mrbc_args args;
FILE *wfp;
mrb_value load;
if (mrb == NULL) {
fputs("Invalid mrb_state, exiting mrbc\n", stderr);
return EXIT_FAILURE;
}
n = parse_args(mrb, argc, argv, &args);
if (n < 0) {
cleanup(mrb, &args);
usage(argv[0]);
return EXIT_FAILURE;
}
if (n == argc) {
fprintf(stderr, "%s: no program file given\n", args.prog);
return EXIT_FAILURE;
}
if (args.outfile == NULL && !args.check_syntax) {
if (n + 1 == argc) {
args.outfile = get_outfilename(mrb, argv[n], args.initname ? C_EXT : RITEBIN_EXT);
}
else {
fprintf(stderr, "%s: output file should be specified to compile multiple files\n", args.prog);
return EXIT_FAILURE;
}
}
args.idx = n;
load = load_file(mrb, &args);
if (mrb_nil_p(load)) {
cleanup(mrb, &args);
return EXIT_FAILURE;
}
if (args.check_syntax) {
printf("%s:%s:Syntax OK\n", args.prog, argv[n]);
}
if (args.check_syntax) {
cleanup(mrb, &args);
return EXIT_SUCCESS;
}
if (args.outfile) {
if (strcmp("-", args.outfile) == 0) {
wfp = stdout;
}
else if ((wfp = fopen(args.outfile, "wb")) == NULL) {
fprintf(stderr, "%s: cannot open output file:(%s)\n", args.prog, args.outfile);
return EXIT_FAILURE;
}
}
else {
fputs("Output file is required\n", stderr);
return EXIT_FAILURE;
}
result = dump_file(mrb, wfp, args.outfile, mrb_proc_ptr(load), &args);
fclose(wfp);
cleanup(mrb, &args);
if (result != MRB_DUMP_OK) {
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
void
mrb_init_mrblib(mrb_state *mrb)
{
}
#ifndef MRB_NO_GEMS
void
mrb_init_mrbgems(mrb_state *mrb)
{
}
void
mrb_final_mrbgems(mrb_state *mrb)
{
}
#endif