[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/array.h>
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| 6 | #include <mruby/compile.h>
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| 7 | #include <mruby/dump.h>
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| 8 | #include <mruby/variable.h>
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[270] | 9 |
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| 10 | #ifdef MRB_DISABLE_STDIO
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| 11 | static void
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| 12 | p(mrb_state *mrb, mrb_value obj)
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| 13 | {
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| 14 | mrb_value val = mrb_inspect(mrb, obj);
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| 15 |
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| 16 | fwrite(RSTRING_PTR(val), RSTRING_LEN(val), 1, stdout);
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| 17 | putc('\n', stdout);
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| 18 | }
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| 19 | #else
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| 20 | #define p(mrb,obj) mrb_p(mrb,obj)
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| 21 | #endif
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| 22 |
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| 23 | struct _args {
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| 24 | FILE *rfp;
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| 25 | char* cmdline;
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| 26 | mrb_bool fname : 1;
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| 27 | mrb_bool mrbfile : 1;
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| 28 | mrb_bool check_syntax : 1;
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| 29 | mrb_bool verbose : 1;
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| 30 | int argc;
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| 31 | char** argv;
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| 32 | };
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| 33 |
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| 34 | static void
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| 35 | usage(const char *name)
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| 36 | {
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| 37 | static const char *const usage_msg[] = {
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| 38 | "switches:",
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| 39 | "-b load and execute RiteBinary (mrb) file",
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| 40 | "-c check syntax only",
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| 41 | "-e 'command' one line of script",
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| 42 | "-v print version number, then run in verbose mode",
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| 43 | "--verbose run in verbose mode",
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| 44 | "--version print the version",
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| 45 | "--copyright print the copyright",
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| 46 | NULL
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| 47 | };
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| 48 | const char *const *p = usage_msg;
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| 49 |
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| 50 | printf("Usage: %s [switches] programfile\n", name);
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| 51 | while (*p)
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| 52 | printf(" %s\n", *p++);
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| 53 | }
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| 54 |
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| 55 | static int
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| 56 | parse_args(mrb_state *mrb, int argc, char **argv, struct _args *args)
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| 57 | {
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| 58 | char **origargv = argv;
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| 59 | static const struct _args args_zero = { 0 };
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| 60 |
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| 61 | *args = args_zero;
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| 62 |
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| 63 | for (argc--,argv++; argc > 0; argc--,argv++) {
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| 64 | char *item;
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| 65 | if (argv[0][0] != '-') break;
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| 66 |
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| 67 | if (strlen(*argv) <= 1) {
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| 68 | argc--; argv++;
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| 69 | args->rfp = stdin;
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| 70 | break;
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| 71 | }
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| 72 |
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| 73 | item = argv[0] + 1;
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| 74 | switch (*item++) {
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| 75 | case 'b':
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| 76 | args->mrbfile = TRUE;
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| 77 | break;
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| 78 | case 'c':
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| 79 | args->check_syntax = TRUE;
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| 80 | break;
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| 81 | case 'e':
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| 82 | if (item[0]) {
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| 83 | goto append_cmdline;
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| 84 | }
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| 85 | else if (argc > 1) {
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| 86 | argc--; argv++;
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| 87 | item = argv[0];
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| 88 | append_cmdline:
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| 89 | if (!args->cmdline) {
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| 90 | size_t buflen;
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| 91 | char *buf;
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| 92 |
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| 93 | buflen = strlen(item) + 1;
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| 94 | buf = (char *)mrb_malloc(mrb, buflen);
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| 95 | memcpy(buf, item, buflen);
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| 96 | args->cmdline = buf;
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| 97 | }
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| 98 | else {
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| 99 | size_t cmdlinelen;
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| 100 | size_t itemlen;
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| 101 |
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| 102 | cmdlinelen = strlen(args->cmdline);
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| 103 | itemlen = strlen(item);
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| 104 | args->cmdline =
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| 105 | (char *)mrb_realloc(mrb, args->cmdline, cmdlinelen + itemlen + 2);
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| 106 | args->cmdline[cmdlinelen] = '\n';
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| 107 | memcpy(args->cmdline + cmdlinelen + 1, item, itemlen + 1);
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| 108 | }
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| 109 | }
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| 110 | else {
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| 111 | printf("%s: No code specified for -e\n", *origargv);
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| 112 | return EXIT_SUCCESS;
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| 113 | }
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| 114 | break;
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| 115 | case 'v':
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| 116 | if (!args->verbose) mrb_show_version(mrb);
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| 117 | args->verbose = TRUE;
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| 118 | break;
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| 119 | case '-':
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| 120 | if (strcmp((*argv) + 2, "version") == 0) {
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| 121 | mrb_show_version(mrb);
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| 122 | exit(EXIT_SUCCESS);
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| 123 | }
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| 124 | else if (strcmp((*argv) + 2, "verbose") == 0) {
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| 125 | args->verbose = TRUE;
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| 126 | break;
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| 127 | }
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| 128 | else if (strcmp((*argv) + 2, "copyright") == 0) {
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| 129 | mrb_show_copyright(mrb);
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| 130 | exit(EXIT_SUCCESS);
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| 131 | }
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| 132 | default:
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| 133 | return EXIT_FAILURE;
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| 134 | }
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| 135 | }
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| 136 |
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| 137 | if (args->rfp == NULL && args->cmdline == NULL) {
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| 138 | if (*argv == NULL) args->rfp = stdin;
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| 139 | else {
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| 140 | args->rfp = fopen(argv[0], args->mrbfile ? "rb" : "r");
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| 141 | if (args->rfp == NULL) {
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| 142 | printf("%s: Cannot open program file. (%s)\n", *origargv, *argv);
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| 143 | return EXIT_FAILURE;
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| 144 | }
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| 145 | args->fname = TRUE;
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| 146 | args->cmdline = argv[0];
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| 147 | argc--; argv++;
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| 148 | }
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| 149 | }
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| 150 | args->argv = (char **)mrb_realloc(mrb, args->argv, sizeof(char*) * (argc + 1));
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| 151 | memcpy(args->argv, argv, (argc+1) * sizeof(char*));
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| 152 | args->argc = argc;
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| 153 |
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| 154 | return EXIT_SUCCESS;
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| 155 | }
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| 156 |
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| 157 | static void
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| 158 | cleanup(mrb_state *mrb, struct _args *args)
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| 159 | {
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| 160 | if (args->rfp && args->rfp != stdin)
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| 161 | fclose(args->rfp);
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| 162 | if (!args->fname)
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| 163 | mrb_free(mrb, args->cmdline);
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| 164 | mrb_free(mrb, args->argv);
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| 165 | mrb_close(mrb);
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| 166 | }
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| 167 |
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| 168 | int
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| 169 | main(int argc, char **argv)
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| 170 | {
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| 171 | mrb_state *mrb = mrb_open();
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| 172 | int n = -1;
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| 173 | int i;
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| 174 | struct _args args;
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| 175 | mrb_value ARGV;
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| 176 | mrbc_context *c;
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| 177 | mrb_value v;
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| 178 | mrb_sym zero_sym;
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| 179 |
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| 180 | if (mrb == NULL) {
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| 181 | fputs("Invalid mrb_state, exiting mruby\n", stderr);
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| 182 | return EXIT_FAILURE;
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| 183 | }
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| 184 |
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| 185 | n = parse_args(mrb, argc, argv, &args);
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| 186 | if (n == EXIT_FAILURE || (args.cmdline == NULL && args.rfp == NULL)) {
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| 187 | cleanup(mrb, &args);
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| 188 | usage(argv[0]);
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| 189 | return n;
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| 190 | }
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[331] | 191 | else {
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| 192 | int ai = mrb_gc_arena_save(mrb);
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| 193 | ARGV = mrb_ary_new_capa(mrb, args.argc);
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| 194 | for (i = 0; i < args.argc; i++) {
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| 195 | char* utf8 = mrb_utf8_from_locale(args.argv[i], -1);
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| 196 | if (utf8) {
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| 197 | mrb_ary_push(mrb, ARGV, mrb_str_new_cstr(mrb, utf8));
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| 198 | mrb_utf8_free(utf8);
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| 199 | }
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[270] | 200 | }
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[331] | 201 | mrb_define_global_const(mrb, "ARGV", ARGV);
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[270] | 202 |
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[331] | 203 | c = mrbc_context_new(mrb);
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| 204 | if (args.verbose)
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| 205 | c->dump_result = TRUE;
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| 206 | if (args.check_syntax)
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| 207 | c->no_exec = TRUE;
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[270] | 208 |
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[331] | 209 | /* Set $0 */
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| 210 | zero_sym = mrb_intern_lit(mrb, "$0");
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| 211 | if (args.rfp) {
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| 212 | const char *cmdline;
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| 213 | cmdline = args.cmdline ? args.cmdline : "-";
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| 214 | mrbc_filename(mrb, c, cmdline);
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| 215 | mrb_gv_set(mrb, zero_sym, mrb_str_new_cstr(mrb, cmdline));
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| 216 | }
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| 217 | else {
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| 218 | mrbc_filename(mrb, c, "-e");
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| 219 | mrb_gv_set(mrb, zero_sym, mrb_str_new_lit(mrb, "-e"));
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| 220 | }
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[270] | 221 |
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[331] | 222 | /* Load program */
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| 223 | if (args.mrbfile) {
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| 224 | v = mrb_load_irep_file_cxt(mrb, args.rfp, c);
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| 225 | }
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| 226 | else if (args.rfp) {
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| 227 | v = mrb_load_file_cxt(mrb, args.rfp, c);
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| 228 | }
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| 229 | else {
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| 230 | char* utf8 = mrb_utf8_from_locale(args.cmdline, -1);
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| 231 | if (!utf8) abort();
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| 232 | v = mrb_load_string_cxt(mrb, utf8, c);
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| 233 | mrb_utf8_free(utf8);
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| 234 | }
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[270] | 235 |
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[331] | 236 | mrb_gc_arena_restore(mrb, ai);
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| 237 | mrbc_context_free(mrb, c);
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| 238 | if (mrb->exc) {
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| 239 | if (mrb_undef_p(v)) {
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| 240 | mrb_p(mrb, mrb_obj_value(mrb->exc));
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| 241 | }
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| 242 | else {
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| 243 | mrb_print_error(mrb);
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| 244 | }
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| 245 | n = -1;
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[270] | 246 | }
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[331] | 247 | else if (args.check_syntax) {
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| 248 | printf("Syntax OK\n");
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| 249 | }
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[270] | 250 | }
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| 251 | cleanup(mrb, &args);
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| 252 |
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| 253 | return n == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
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| 254 | }
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