[270] | 1 | #include <stdio.h>
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| 2 | #include <stdlib.h>
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| 3 | #include <string.h>
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[331] | 4 | #include <mruby.h>
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| 5 | #include <mruby/irep.h>
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| 6 | #include <mruby/dump.h>
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[270] | 7 |
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| 8 | struct strip_args {
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| 9 | int argc_start;
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| 10 | int argc;
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| 11 | char **argv;
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| 12 | mrb_bool lvar;
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| 13 | };
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| 14 |
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| 15 |
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| 16 | static void
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| 17 | irep_remove_lv(mrb_state *mrb, mrb_irep *irep)
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| 18 | {
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| 19 | size_t i;
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| 20 |
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| 21 | if (irep->lv) {
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| 22 | mrb_free(mrb, irep->lv);
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| 23 | irep->lv = NULL;
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| 24 | }
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| 25 |
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| 26 | for (i = 0; i < irep->rlen; ++i) {
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| 27 | irep_remove_lv(mrb, irep->reps[i]);
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| 28 | }
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| 29 | }
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| 30 |
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| 31 | static void
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| 32 | print_usage(const char *f)
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| 33 | {
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| 34 | printf("Usage: %s [switches] irepfiles\n", f);
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| 35 | printf("switches:\n");
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| 36 | printf(" -l, --lvar remove LVAR section too.\n");
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| 37 | }
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| 38 |
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| 39 | static int
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| 40 | parse_args(int argc, char **argv, struct strip_args *args)
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| 41 | {
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| 42 | int i;
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| 43 |
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| 44 | args->argc_start = 0;
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| 45 | args->argc = argc;
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| 46 | args->argv = argv;
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| 47 | args->lvar = FALSE;
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| 48 |
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| 49 | for (i = 1; i < argc; ++i) {
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| 50 | const size_t len = strlen(argv[i]);
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| 51 | if (len >= 2 && argv[i][0] == '-') {
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| 52 | switch (argv[i][1]) {
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| 53 | case 'l':
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| 54 | args->lvar = TRUE;
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| 55 | break;
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| 56 | case '-':
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| 57 | if (strncmp((*argv) + 2, "lvar", len) == 0) {
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| 58 | args->lvar = TRUE;
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| 59 | break;
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| 60 | }
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| 61 | default:
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| 62 | return -1;
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| 63 | }
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| 64 | }
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| 65 | else {
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| 66 | break;
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| 67 | }
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| 68 | }
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| 69 |
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| 70 | args->argc_start = i;
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| 71 | return i;
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| 72 | }
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| 73 |
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| 74 | static int
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| 75 | strip(mrb_state *mrb, struct strip_args *args)
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| 76 | {
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| 77 | int i;
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| 78 |
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| 79 | for (i = args->argc_start; i < args->argc; ++i) {
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| 80 | char *filename;
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| 81 | FILE *rfile;
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| 82 | mrb_irep *irep;
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| 83 | FILE *wfile;
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| 84 | int dump_result;
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| 85 |
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| 86 | filename = args->argv[i];
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| 87 | rfile = fopen(filename, "rb");
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| 88 | if (rfile == NULL) {
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| 89 | fprintf(stderr, "can't open file for reading %s\n", filename);
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| 90 | return EXIT_FAILURE;
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| 91 | }
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| 92 |
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| 93 | irep = mrb_read_irep_file(mrb, rfile);
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| 94 | fclose(rfile);
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| 95 | if (irep == NULL) {
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| 96 | fprintf(stderr, "can't read irep file %s\n", filename);
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| 97 | return EXIT_FAILURE;
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| 98 | }
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| 99 |
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| 100 | /* clear lv if --lvar is enabled */
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| 101 | if (args->lvar) {
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| 102 | irep_remove_lv(mrb, irep);
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| 103 | }
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| 104 |
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| 105 | wfile = fopen(filename, "wb");
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| 106 | if (wfile == NULL) {
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| 107 | fprintf(stderr, "can't open file for writing %s\n", filename);
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| 108 | mrb_irep_decref(mrb, irep);
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| 109 | return EXIT_FAILURE;
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| 110 | }
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| 111 |
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| 112 | /* debug flag must always be false */
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| 113 | dump_result = mrb_dump_irep_binary(mrb, irep, FALSE, wfile);
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| 114 |
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| 115 | fclose(wfile);
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| 116 | mrb_irep_decref(mrb, irep);
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| 117 |
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| 118 | if (dump_result != MRB_DUMP_OK) {
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| 119 | fprintf(stderr, "error occurred during dumping %s\n", filename);
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| 120 | return EXIT_FAILURE;
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| 121 | }
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| 122 | }
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| 123 | return EXIT_SUCCESS;
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| 124 | }
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| 125 |
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| 126 | int
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| 127 | main(int argc, char **argv)
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| 128 | {
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| 129 | struct strip_args args;
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| 130 | int args_result;
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| 131 | mrb_state *mrb;
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| 132 | int ret;
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| 133 |
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| 134 | if (argc <= 1) {
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| 135 | printf("no files to strip\n");
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| 136 | print_usage(argv[0]);
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| 137 | return EXIT_FAILURE;
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| 138 | }
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| 139 |
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| 140 | args_result = parse_args(argc, argv, &args);
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| 141 | if (args_result < 0) {
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| 142 | print_usage(argv[0]);
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| 143 | return EXIT_FAILURE;
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| 144 | }
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| 145 | mrb = mrb_open_core(mrb_default_allocf, NULL);
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| 146 | if (mrb == NULL) {
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| 147 | fputs("Invalid mrb_state, exiting mruby-strip\n", stderr);
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| 148 | return EXIT_FAILURE;
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| 149 | }
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| 150 |
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| 151 | ret = strip(mrb, &args);
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| 152 |
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| 153 | mrb_close(mrb);
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| 154 | return ret;
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| 155 | }
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