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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "mruby.h"
#include "mruby/irep.h"
#include "mruby/dump.h"
struct strip_args {
mrb_bool lvar;
};
static void
print_usage(const char *f)
{
printf("Usage: %s [options] irepfiles\n", f);
printf("options:\n");
printf(" -l, --lvar remove LVAR section too.\n");
}
static int
parse_args(int argc, char **argv, struct strip_args *args)
{
static const struct strip_args initial_args = {0};
int i;
*args = initial_args;
for (i = 1; i < argc; ++i) {
size_t const len = strlen(argv[i]);
if (len >= 2 && argv[i][0] == '-') {
switch(argv[i][1]) {
case 'l':
args->lvar = TRUE;
break;
case '-':
if (strncmp((*argv) + 2, "lvar", len) == 0) {
args->lvar = TRUE;
break;
}
default:
return -1;
}
} else {
break;
}
}
return i;
}
int
main(int argc, char **argv)
{
struct strip_args args;
int args_result, i, dump_result;
FILE **files;
mrb_irep **ireps;
mrb_state *mrb;
if (argc <= 1) {
printf("no files to strip\n");
print_usage(argv[0]);
return EXIT_FAILURE;
}
args_result = parse_args(argc, argv, &args);
if (args_result < 0) {
print_usage(argv[0]);
return EXIT_FAILURE;
}
files = (FILE**)malloc(sizeof(FILE*) * argc);
for (i = args_result; i < argc; ++i) {
files[i] = fopen(argv[i], "rb");
if (!files[i]) {
fprintf(stderr, "can't open file %s\n", argv[i]);
return EXIT_FAILURE;
}
}
mrb = mrb_open();
ireps = (mrb_irep**)malloc(sizeof(mrb_irep*) * argc);
for (i = args_result; i < argc; ++i) {
ireps[i] = mrb_read_irep_file(mrb, files[i]);
if (!ireps[i]) {
fprintf(stderr, "can't read irep file %s\n", argv[i]);
return EXIT_FAILURE;
}
fclose(files[i]);
files[i] = fopen(argv[i], "wb");
if (!ireps[i]) {
fprintf(stderr, "can't reopen irep file %s\n", argv[i]);
return EXIT_FAILURE;
}
}
for (i = args_result; i < argc; ++i) {
/* clear lv if --lvar is enabled */
if (args.lvar) {
mrb_irep_remove_lv(mrb, ireps[i]);
}
/* debug flag must be alway false */
dump_result = mrb_dump_irep_binary(mrb, ireps[i], FALSE, files[i]);
if (dump_result != MRB_DUMP_OK) {
fprintf(stderr, "error occur when dumping %s", argv[i]);
return EXIT_FAILURE;
}
}
mrb_close(mrb);
return EXIT_SUCCESS;
}
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