[279] | 1 | #include <stdlib.h>
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| 2 | #include <string.h>
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| 3 |
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| 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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| 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 | {
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| 25 | FILE *rfp;
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| 26 | char* cmdline;
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| 27 | mrb_bool fname : 1;
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| 28 | mrb_bool mrbfile : 1;
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| 29 | mrb_bool check_syntax : 1;
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| 30 | mrb_bool verbose : 1;
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| 31 | int argc;
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| 32 | char** argv;
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| 33 | };
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| 34 |
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| 35 | static void
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| 36 | usage(const char *name)
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| 37 | {
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| 38 | static const char *const usage_msg[] = {
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| 39 | "switches:",
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| 40 | "-b load and execute RiteBinary (mrb) file",
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| 41 | "-c check syntax only",
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| 42 | "-e 'command' one line of script",
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| 43 | "-v print version number, then run in verbose mode",
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| 44 | "--verbose run in verbose mode",
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| 45 | "--version print the version",
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| 46 | "--copyright print the copyright",
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| 47 | NULL
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| 48 | };
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| 49 | const char *const *p = usage_msg;
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| 50 |
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| 51 | printf("Usage: %s [switches] programfile\n", name);
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| 52 | while (*p)
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| 53 | printf(" %s\n", *p++);
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| 54 | }
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| 55 |
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| 56 | static int
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| 57 | parse_args(mrb_state *mrb, int argc, char **argv, struct _args *args)
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| 58 | {
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| 59 | char **origargv = argv;
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| 60 | static const struct _args args_zero = { 0 };
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| 61 |
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| 62 | *args = args_zero;
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| 63 |
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| 64 | for (argc--, argv++; argc > 0; argc--, argv++) {
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| 65 | char *item;
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| 66 | if (argv[0][0] != '-') break;
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| 67 |
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| 68 | if (strlen(*argv) <= 1) {
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| 69 | argc--; argv++;
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| 70 | args->rfp = stdin;
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| 71 | break;
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| 72 | }
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| 73 |
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| 74 | item = argv[0] + 1;
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| 75 | switch (*item++) {
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| 76 | case 'b':
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| 77 | args->mrbfile = TRUE;
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| 78 | break;
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| 79 | case 'c':
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| 80 | args->check_syntax = TRUE;
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| 81 | break;
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| 82 | case 'e':
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| 83 | if (item[0]) {
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| 84 | goto append_cmdline;
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| 85 | }
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| 86 | else if (argc > 1) {
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| 87 | argc--; argv++;
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| 88 | item = argv[0];
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| 89 | append_cmdline:
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| 90 | if (!args->cmdline) {
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| 91 | size_t buflen;
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| 92 | char *buf;
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| 93 |
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| 94 | buflen = strlen(item) + 1;
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| 95 | buf = (char *)mrb_malloc(mrb, buflen);
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| 96 | memcpy(buf, item, buflen);
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| 97 | args->cmdline = buf;
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| 98 | }
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| 99 | else {
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| 100 | size_t cmdlinelen;
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| 101 | size_t itemlen;
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| 102 |
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| 103 | cmdlinelen = strlen(args->cmdline);
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| 104 | itemlen = strlen(item);
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| 105 | args->cmdline =
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| 106 | (char *)mrb_realloc(mrb, args->cmdline, cmdlinelen + itemlen + 2);
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| 107 | args->cmdline[cmdlinelen] = '\n';
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| 108 | memcpy(args->cmdline + cmdlinelen + 1, item, itemlen + 1);
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| 109 | }
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| 110 | }
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| 111 | else {
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| 112 | printf("%s: No code specified for -e\n", *origargv);
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| 113 | return EXIT_SUCCESS;
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| 114 | }
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| 115 | break;
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| 116 | case 'v':
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| 117 | if (!args->verbose) mrb_show_version(mrb);
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| 118 | args->verbose = TRUE;
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| 119 | break;
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| 120 | case '-':
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| 121 | if (strcmp((*argv) + 2, "version") == 0) {
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| 122 | mrb_show_version(mrb);
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| 123 | exit(EXIT_SUCCESS);
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| 124 | }
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| 125 | else if (strcmp((*argv) + 2, "verbose") == 0) {
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| 126 | args->verbose = TRUE;
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| 127 | break;
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| 128 | }
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| 129 | else if (strcmp((*argv) + 2, "copyright") == 0) {
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| 130 | mrb_show_copyright(mrb);
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| 131 | exit(EXIT_SUCCESS);
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| 132 | }
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| 133 | default:
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| 134 | return EXIT_FAILURE;
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| 135 | }
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| 136 | }
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| 137 |
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| 138 | if (args->rfp == NULL && args->cmdline == NULL) {
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| 139 | if (*argv == NULL) args->rfp = stdin;
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| 140 | else {
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| 141 | args->rfp = fopen(argv[0], args->mrbfile ? "rb" : "r");
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| 142 | if (args->rfp == NULL) {
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| 143 | printf("%s: Cannot open program file. (%s)\n", *origargv, *argv);
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| 144 | return EXIT_FAILURE;
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| 145 | }
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| 146 | args->fname = TRUE;
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| 147 | args->cmdline = argv[0];
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| 148 | argc--; argv++;
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| 149 | }
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| 150 | }
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| 151 | args->argv = (char **)mrb_realloc(mrb, args->argv, sizeof(char*) * (argc + 1));
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| 152 | memcpy(args->argv, argv, (argc + 1) * sizeof(char*));
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| 153 | args->argc = argc;
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| 154 |
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| 155 | return EXIT_SUCCESS;
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| 156 | }
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| 157 |
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| 158 | static void
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| 159 | cleanup(mrb_state *mrb, struct _args *args)
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| 160 | {
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| 161 | if (args->rfp && args->rfp != stdin)
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| 162 | fclose(args->rfp);
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| 163 | if (!args->fname)
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| 164 | mrb_free(mrb, args->cmdline);
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| 165 | mrb_free(mrb, args->argv);
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| 166 | mrb_close(mrb);
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| 167 | }
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| 168 |
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| 169 | int
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| 170 | mruby_main(int argc, char **argv)
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| 171 | {
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| 172 | mrb_state *mrb = mrb_open();
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| 173 | int n = -1;
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| 174 | int i;
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| 175 | struct _args args;
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| 176 | mrb_value ARGV;
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| 177 | mrbc_context *c;
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| 178 | mrb_value v;
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| 179 | mrb_sym zero_sym;
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| 180 |
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| 181 | if (mrb == NULL) {
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| 182 | fputs("Invalid mrb_state, exiting mruby\n", stderr);
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| 183 | return EXIT_FAILURE;
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| 184 | }
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| 185 |
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| 186 | n = parse_args(mrb, argc, argv, &args);
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| 187 | if (n == EXIT_FAILURE || (args.cmdline == NULL && args.rfp == NULL)) {
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| 188 | cleanup(mrb, &args);
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| 189 | usage(argv[0]);
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| 190 | return n;
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| 191 | }
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| 192 | else {
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| 193 | int ai = mrb_gc_arena_save(mrb);
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| 194 | ARGV = mrb_ary_new_capa(mrb, args.argc);
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| 195 | for (i = 0; i < args.argc; i++) {
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| 196 | mrb_ary_push(mrb, ARGV, mrb_str_new_cstr(mrb, args.argv[i]));
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| 197 | }
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| 198 | mrb_define_global_const(mrb, "ARGV", ARGV);
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| 199 |
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| 200 | c = mrbc_context_new(mrb);
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| 201 | if (args.verbose)
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| 202 | c->dump_result = TRUE;
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| 203 | if (args.check_syntax)
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| 204 | c->no_exec = TRUE;
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| 205 |
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| 206 | /* Set $0 */
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| 207 | zero_sym = mrb_intern_lit(mrb, "$0");
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| 208 | if (args.rfp) {
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| 209 | const char *cmdline;
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| 210 | cmdline = args.cmdline ? args.cmdline : "-";
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| 211 | mrbc_filename(mrb, c, cmdline);
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| 212 | mrb_gv_set(mrb, zero_sym, mrb_str_new_cstr(mrb, cmdline));
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| 213 | }
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| 214 | else {
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| 215 | mrbc_filename(mrb, c, "-e");
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| 216 | mrb_gv_set(mrb, zero_sym, mrb_str_new_lit(mrb, "-e"));
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| 217 | }
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| 218 |
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| 219 | /* Load program */
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| 220 | if (args.mrbfile) {
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| 221 | v = mrb_load_irep_file_cxt(mrb, args.rfp, c);
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| 222 | }
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| 223 | else if (args.rfp) {
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| 224 | v = mrb_load_file_cxt(mrb, args.rfp, c);
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| 225 | }
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| 226 | else {
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| 227 | v = mrb_load_string_cxt(mrb, args.cmdline, c);
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| 228 | }
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| 229 |
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| 230 | mrb_gc_arena_restore(mrb, ai);
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| 231 | mrbc_context_free(mrb, c);
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| 232 | if (mrb->exc) {
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| 233 | if (!mrb_undef_p(v)) {
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| 234 | mrb_print_error(mrb);
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| 235 | }
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| 236 | n = -1;
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| 237 | }
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| 238 | else if (args.check_syntax) {
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| 239 | printf("Syntax OK\n");
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| 240 | }
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| 241 | }
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| 242 | cleanup(mrb, &args);
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| 243 |
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| 244 | return n == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
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| 245 | }
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