[439] | 1 | #include <mruby.h>
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| 2 |
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| 3 | #ifdef MRB_DISABLE_STDIO
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| 4 | # error mruby-bin-mruby conflicts 'MRB_DISABLE_STDIO' configuration in your 'build_config.rb'
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| 5 | #endif
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| 6 |
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[279] | 7 | #include <stdlib.h>
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| 8 | #include <string.h>
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[439] | 9 | #include <mruby/array.h>
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| 10 | #include <mruby/compile.h>
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| 11 | #include <mruby/dump.h>
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| 12 | #include <mruby/variable.h>
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[279] | 13 |
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[439] | 14 | struct _args {
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| 15 | FILE *rfp;
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| 16 | char *cmdline;
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| 17 | mrb_bool fname : 1;
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| 18 | mrb_bool mrbfile : 1;
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| 19 | mrb_bool check_syntax : 1;
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| 20 | mrb_bool verbose : 1;
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| 21 | mrb_bool version : 1;
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| 22 | mrb_bool debug : 1;
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| 23 | int argc;
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| 24 | char **argv;
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| 25 | int libc;
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| 26 | char **libv;
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| 27 | };
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[279] | 28 |
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[439] | 29 | struct options {
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| 30 | int argc;
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| 31 | char **argv;
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| 32 | char *program;
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| 33 | char *opt;
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| 34 | char short_opt[2];
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| 35 | };
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| 36 |
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[279] | 37 | static void
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[439] | 38 | usage(const char *name)
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[279] | 39 | {
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[439] | 40 | static const char *const usage_msg[] = {
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| 41 | "switches:",
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| 42 | "-b load and execute RiteBinary (mrb) file",
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| 43 | "-c check syntax only",
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| 44 | "-d set debugging flags (set $DEBUG to true)",
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| 45 | "-e 'command' one line of script",
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| 46 | "-r library load the library before executing your script",
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| 47 | "-v print version number, then run in verbose mode",
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| 48 | "--verbose run in verbose mode",
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| 49 | "--version print the version",
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| 50 | "--copyright print the copyright",
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| 51 | NULL
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| 52 | };
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| 53 | const char *const *p = usage_msg;
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[279] | 54 |
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[439] | 55 | printf("Usage: %s [switches] [programfile] [arguments]\n", name);
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| 56 | while (*p)
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| 57 | printf(" %s\n", *p++);
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[279] | 58 | }
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| 59 |
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[439] | 60 | static void
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| 61 | options_init(struct options *opts, int argc, char **argv)
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[279] | 62 | {
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[439] | 63 | opts->argc = argc;
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| 64 | opts->argv = argv;
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| 65 | opts->program = *argv;
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| 66 | *opts->short_opt = 0;
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| 67 | }
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[279] | 68 |
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[439] | 69 | static const char *
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| 70 | options_opt(struct options *opts)
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[279] | 71 | {
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[439] | 72 | /* concatenated short options (e.g. `-cv`) */
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| 73 | if (*opts->short_opt && *++opts->opt) {
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| 74 | short_opt:
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| 75 | opts->short_opt[0] = *opts->opt;
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| 76 | opts->short_opt[1] = 0;
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| 77 | return opts->short_opt;
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| 78 | }
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[279] | 79 |
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[439] | 80 | while (++opts->argv, --opts->argc) {
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| 81 | opts->opt = *opts->argv;
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| 82 |
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| 83 | /* empty || not start with `-` || `-` */
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| 84 | if (!opts->opt[0] || opts->opt[0] != '-' || !opts->opt[1]) return NULL;
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| 85 |
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| 86 | if (opts->opt[1] == '-') {
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| 87 | /* `--` */
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| 88 | if (!opts->opt[2]) {
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| 89 | ++opts->argv, --opts->argc;
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| 90 | return NULL;
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| 91 | }
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| 92 | /* long option */
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| 93 | opts->opt += 2;
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| 94 | *opts->short_opt = 0;
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| 95 | return opts->opt;
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| 96 | }
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| 97 | else {
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| 98 | /* short option */
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| 99 | ++opts->opt;
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| 100 | goto short_opt;
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| 101 | }
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| 102 | }
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| 103 | return NULL;
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[279] | 104 | }
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| 105 |
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[439] | 106 | static const char *
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| 107 | options_arg(struct options *opts)
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| 108 | {
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| 109 | if (*opts->short_opt && opts->opt[1]) {
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| 110 | /* concatenated short option and option argument (e.g. `-rLIBRARY`) */
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| 111 | *opts->short_opt = 0;
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| 112 | return opts->opt + 1;
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| 113 | }
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| 114 | --opts->argc, ++opts->argv;
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| 115 | return opts->argc ? *opts->argv : NULL;
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| 116 | }
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| 117 |
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| 118 | static char *
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| 119 | dup_arg_item(mrb_state *mrb, const char *item)
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| 120 | {
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| 121 | size_t buflen = strlen(item) + 1;
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| 122 | char *buf = (char*)mrb_malloc(mrb, buflen);
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| 123 | memcpy(buf, item, buflen);
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| 124 | return buf;
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| 125 | }
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| 126 |
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[279] | 127 | static int
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| 128 | parse_args(mrb_state *mrb, int argc, char **argv, struct _args *args)
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| 129 | {
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[439] | 130 | static const struct _args args_zero = { 0 };
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| 131 | struct options opts[1];
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| 132 | const char *opt, *item;
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[279] | 133 |
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[439] | 134 | *args = args_zero;
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| 135 | options_init(opts, argc, argv);
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| 136 | while ((opt = options_opt(opts))) {
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| 137 | if (strcmp(opt, "b") == 0) {
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| 138 | args->mrbfile = TRUE;
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| 139 | }
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| 140 | else if (strcmp(opt, "c") == 0) {
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| 141 | args->check_syntax = TRUE;
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| 142 | }
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| 143 | else if (strcmp(opt, "d") == 0) {
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| 144 | args->debug = TRUE;
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| 145 | }
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| 146 | else if (strcmp(opt, "e") == 0) {
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| 147 | if ((item = options_arg(opts))) {
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| 148 | if (!args->cmdline) {
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| 149 | args->cmdline = dup_arg_item(mrb, item);
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| 150 | }
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| 151 | else {
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| 152 | size_t cmdlinelen;
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| 153 | size_t itemlen;
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[279] | 154 |
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[439] | 155 | cmdlinelen = strlen(args->cmdline);
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| 156 | itemlen = strlen(item);
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| 157 | args->cmdline =
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| 158 | (char *)mrb_realloc(mrb, args->cmdline, cmdlinelen + itemlen + 2);
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| 159 | args->cmdline[cmdlinelen] = '\n';
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| 160 | memcpy(args->cmdline + cmdlinelen + 1, item, itemlen + 1);
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| 161 | }
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| 162 | }
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| 163 | else {
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| 164 | fprintf(stderr, "%s: No code specified for -e\n", opts->program);
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| 165 | return EXIT_FAILURE;
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| 166 | }
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| 167 | }
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| 168 | else if (strcmp(opt, "h") == 0) {
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| 169 | usage(opts->program);
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| 170 | exit(EXIT_SUCCESS);
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| 171 | }
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| 172 | else if (strcmp(opt, "r") == 0) {
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| 173 | if ((item = options_arg(opts))) {
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| 174 | if (args->libc == 0) {
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| 175 | args->libv = (char**)mrb_malloc(mrb, sizeof(char*));
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| 176 | }
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| 177 | else {
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| 178 | args->libv = (char**)mrb_realloc(mrb, args->libv, sizeof(char*) * (args->libc + 1));
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| 179 | }
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| 180 | args->libv[args->libc++] = dup_arg_item(mrb, item);
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| 181 | }
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| 182 | else {
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| 183 | fprintf(stderr, "%s: No library specified for -r\n", opts->program);
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| 184 | return EXIT_FAILURE;
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| 185 | }
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| 186 | }
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| 187 | else if (strcmp(opt, "v") == 0) {
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| 188 | if (!args->verbose) {
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| 189 | mrb_show_version(mrb);
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| 190 | args->version = TRUE;
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| 191 | }
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| 192 | args->verbose = TRUE;
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| 193 | }
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| 194 | else if (strcmp(opt, "version") == 0) {
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| 195 | mrb_show_version(mrb);
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| 196 | exit(EXIT_SUCCESS);
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| 197 | }
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| 198 | else if (strcmp(opt, "verbose") == 0) {
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| 199 | args->verbose = TRUE;
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| 200 | }
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| 201 | else if (strcmp(opt, "copyright") == 0) {
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| 202 | mrb_show_copyright(mrb);
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| 203 | exit(EXIT_SUCCESS);
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| 204 | }
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| 205 | else {
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| 206 | fprintf(stderr, "%s: invalid option %s%s (-h will show valid options)\n",
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| 207 | opts->program, opt[1] ? "--" : "-", opt);
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| 208 | return EXIT_FAILURE;
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| 209 | }
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| 210 | }
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[279] | 211 |
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[439] | 212 | argc = opts->argc; argv = opts->argv;
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| 213 | if (args->cmdline == NULL) {
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| 214 | if (*argv == NULL) {
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| 215 | if (args->version) exit(EXIT_SUCCESS);
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| 216 | args->rfp = stdin;
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| 217 | }
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| 218 | else {
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| 219 | args->rfp = strcmp(argv[0], "-") == 0 ?
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| 220 | stdin : fopen(argv[0], args->mrbfile ? "rb" : "r");
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| 221 | if (args->rfp == NULL) {
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| 222 | fprintf(stderr, "%s: Cannot open program file: %s\n", opts->program, argv[0]);
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| 223 | return EXIT_FAILURE;
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| 224 | }
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| 225 | args->fname = TRUE;
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| 226 | args->cmdline = argv[0];
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| 227 | argc--; argv++;
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| 228 | }
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| 229 | }
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| 230 | args->argv = (char **)mrb_realloc(mrb, args->argv, sizeof(char*) * (argc + 1));
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| 231 | memcpy(args->argv, argv, (argc+1) * sizeof(char*));
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| 232 | args->argc = argc;
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[279] | 233 |
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[439] | 234 | return EXIT_SUCCESS;
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[279] | 235 | }
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| 236 |
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| 237 | static void
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| 238 | cleanup(mrb_state *mrb, struct _args *args)
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| 239 | {
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[439] | 240 | if (args->rfp && args->rfp != stdin)
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| 241 | fclose(args->rfp);
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| 242 | if (!args->fname)
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| 243 | mrb_free(mrb, args->cmdline);
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| 244 | mrb_free(mrb, args->argv);
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| 245 | if (args->libc) {
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| 246 | while (args->libc--) {
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| 247 | mrb_free(mrb, args->libv[args->libc]);
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| 248 | }
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| 249 | mrb_free(mrb, args->libv);
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| 250 | }
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| 251 | mrb_close(mrb);
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[279] | 252 | }
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| 253 |
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| 254 | int
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| 255 | mruby_main(int argc, char **argv)
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| 256 | {
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[439] | 257 | mrb_state *mrb = mrb_open();
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| 258 | int n = -1;
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| 259 | int i;
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| 260 | struct _args args;
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| 261 | mrb_value ARGV;
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| 262 | mrbc_context *c;
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| 263 | mrb_value v;
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| 264 | mrb_sym zero_sym;
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[279] | 265 |
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[439] | 266 | if (mrb == NULL) {
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| 267 | fprintf(stderr, "%s: Invalid mrb_state, exiting mruby\n", *argv);
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| 268 | return EXIT_FAILURE;
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| 269 | }
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[279] | 270 |
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[439] | 271 | n = parse_args(mrb, argc, argv, &args);
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| 272 | if (n == EXIT_FAILURE || (args.cmdline == NULL && args.rfp == NULL)) {
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| 273 | cleanup(mrb, &args);
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| 274 | return n;
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| 275 | }
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| 276 | else {
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| 277 | int ai = mrb_gc_arena_save(mrb);
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| 278 | ARGV = mrb_ary_new_capa(mrb, args.argc);
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| 279 | for (i = 0; i < args.argc; i++) {
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| 280 | char* utf8 = mrb_utf8_from_locale(args.argv[i], -1);
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| 281 | if (utf8) {
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| 282 | mrb_ary_push(mrb, ARGV, mrb_str_new_cstr(mrb, utf8));
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| 283 | mrb_utf8_free(utf8);
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| 284 | }
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| 285 | }
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| 286 | mrb_define_global_const(mrb, "ARGV", ARGV);
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| 287 | mrb_gv_set(mrb, mrb_intern_lit(mrb, "$DEBUG"), mrb_bool_value(args.debug));
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[279] | 288 |
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[439] | 289 | c = mrbc_context_new(mrb);
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| 290 | if (args.verbose)
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| 291 | c->dump_result = TRUE;
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| 292 | if (args.check_syntax)
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| 293 | c->no_exec = TRUE;
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[279] | 294 |
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[439] | 295 | /* Set $0 */
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| 296 | zero_sym = mrb_intern_lit(mrb, "$0");
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| 297 | if (args.rfp) {
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| 298 | const char *cmdline;
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| 299 | cmdline = args.cmdline ? args.cmdline : "-";
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| 300 | mrbc_filename(mrb, c, cmdline);
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| 301 | mrb_gv_set(mrb, zero_sym, mrb_str_new_cstr(mrb, cmdline));
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| 302 | }
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| 303 | else {
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| 304 | mrbc_filename(mrb, c, "-e");
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| 305 | mrb_gv_set(mrb, zero_sym, mrb_str_new_lit(mrb, "-e"));
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| 306 | }
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[279] | 307 |
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[439] | 308 | /* Load libraries */
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| 309 | for (i = 0; i < args.libc; i++) {
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| 310 | FILE *lfp = fopen(args.libv[i], args.mrbfile ? "rb" : "r");
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| 311 | if (lfp == NULL) {
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| 312 | fprintf(stderr, "%s: Cannot open library file: %s\n", *argv, args.libv[i]);
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| 313 | mrbc_context_free(mrb, c);
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| 314 | cleanup(mrb, &args);
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| 315 | return EXIT_FAILURE;
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| 316 | }
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| 317 | if (args.mrbfile) {
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| 318 | v = mrb_load_irep_file_cxt(mrb, lfp, c);
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| 319 | }
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| 320 | else {
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| 321 | v = mrb_load_file_cxt(mrb, lfp, c);
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| 322 | }
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| 323 | fclose(lfp);
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| 324 | }
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[279] | 325 |
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[439] | 326 | /* Load program */
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| 327 | if (args.mrbfile) {
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| 328 | v = mrb_load_irep_file_cxt(mrb, args.rfp, c);
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| 329 | }
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| 330 | else if (args.rfp) {
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| 331 | v = mrb_load_file_cxt(mrb, args.rfp, c);
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| 332 | }
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| 333 | else {
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| 334 | char* utf8 = mrb_utf8_from_locale(args.cmdline, -1);
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| 335 | if (!utf8) abort();
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| 336 | v = mrb_load_string_cxt(mrb, utf8, c);
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| 337 | mrb_utf8_free(utf8);
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| 338 | }
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[279] | 339 |
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[439] | 340 | mrb_gc_arena_restore(mrb, ai);
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| 341 | mrbc_context_free(mrb, c);
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| 342 | if (mrb->exc) {
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| 343 | if (!mrb_undef_p(v)) {
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| 344 | mrb_print_error(mrb);
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| 345 | }
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| 346 | n = EXIT_FAILURE;
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| 347 | }
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| 348 | else if (args.check_syntax) {
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| 349 | puts("Syntax OK");
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| 350 | }
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| 351 | }
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| 352 | cleanup(mrb, &args);
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| 353 |
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| 354 | return n;
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[279] | 355 | }
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