1 | #include <stdlib.h>
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2 |
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3 | #include "mruby.h"
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4 | #include "mruby/compile.h"
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5 | #include "mruby/dump.h"
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6 | #include "mruby/proc.h"
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7 |
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8 | #define RITEBIN_EXT ".mrb"
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9 | #define C_EXT ".c"
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10 |
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11 | struct mrbc_args
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12 | {
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13 | int argc;
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14 | char **argv;
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15 | int idx;
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16 | const char *prog;
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17 | const char *outfile;
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18 | const char *initname;
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19 | mrb_bool check_syntax : 1;
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20 | mrb_bool verbose : 1;
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21 | unsigned int flags : 4;
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22 | };
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23 |
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24 | static void
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25 | usage(const char *name)
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26 | {
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27 | static const char *const usage_msg[] = {
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28 | "switches:",
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29 | "-c check syntax only",
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30 | "-o<outfile> place the output into <outfile>",
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31 | "-v print version number, then turn on verbose mode",
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32 | "-g produce debugging information",
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33 | "-B<symbol> binary <symbol> output in C language format",
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34 | "-e generate little endian iseq data",
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35 | "-E generate big endian iseq data",
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36 | "--verbose run at verbose mode",
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37 | "--version print the version",
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38 | "--copyright print the copyright",
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39 | NULL
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40 | };
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41 | const char *const *p = usage_msg;
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42 |
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43 | printf("Usage: %s [switches] programfile\n", name);
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44 | while (*p)
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45 | printf(" %s\n", *p++);
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46 | }
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47 |
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48 | static char *
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49 | get_outfilename(mrb_state *mrb, char *infile, const char *ext)
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50 | {
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51 | size_t infilelen;
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52 | size_t extlen;
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53 | char *outfile;
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54 | char *p;
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55 |
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56 | infilelen = strlen(infile);
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57 | extlen = strlen(ext);
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58 | outfile = (char*)mrb_malloc(mrb, infilelen + extlen + 1);
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59 | memcpy(outfile, infile, infilelen + 1);
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60 | if (*ext) {
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61 | if ((p = strrchr(outfile, '.')) == NULL)
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62 | p = outfile + infilelen;
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63 | memcpy(p, ext, extlen + 1);
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64 | }
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65 |
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66 | return outfile;
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67 | }
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68 |
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69 | static int
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70 | parse_args(mrb_state *mrb, int argc, char **argv, struct mrbc_args *args)
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71 | {
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72 | static const struct mrbc_args args_zero = { 0 };
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73 | int i;
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74 |
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75 | *args = args_zero;
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76 | args->argc = argc;
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77 | args->argv = argv;
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78 | args->prog = argv[0];
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79 |
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80 | for (i = 1; i < argc; i++) {
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81 | if (argv[i][0] == '-') {
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82 | switch ((argv[i])[1]) {
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83 | case 'o':
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84 | if (args->outfile) {
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85 | fprintf(stderr, "%s: an output file is already specified. (%s)\n",
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86 | args->prog, args->outfile);
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87 | return -1;
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88 | }
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89 | if (argv[i][2] == '\0' && argv[i + 1]) {
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90 | i++;
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91 | args->outfile = get_outfilename(mrb, argv[i], "");
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92 | }
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93 | else {
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94 | args->outfile = get_outfilename(mrb, argv[i] + 2, "");
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95 | }
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96 | break;
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97 | case 'B':
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98 | if (argv[i][2] == '\0' && argv[i + 1]) {
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99 | i++;
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100 | args->initname = argv[i];
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101 | }
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102 | else {
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103 | args->initname = argv[i] + 2;
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104 | }
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105 | if (*args->initname == '\0') {
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106 | fprintf(stderr, "%s: function name is not specified.\n", args->prog);
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107 | return -1;
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108 | }
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109 | break;
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110 | case 'c':
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111 | args->check_syntax = TRUE;
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112 | break;
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113 | case 'v':
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114 | if (!args->verbose) mrb_show_version(mrb);
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115 | args->verbose = TRUE;
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116 | break;
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117 | case 'g':
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118 | args->flags |= DUMP_DEBUG_INFO;
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119 | break;
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120 | case 'E':
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121 | args->flags = DUMP_ENDIAN_BIG | (args->flags & ~DUMP_ENDIAN_MASK);
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122 | break;
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123 | case 'e':
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124 | args->flags = DUMP_ENDIAN_LIL | (args->flags & ~DUMP_ENDIAN_MASK);
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125 | break;
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126 | case 'h':
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127 | return -1;
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128 | case '-':
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129 | if (argv[i][1] == '\n') {
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130 | return i;
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131 | }
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132 | if (strcmp(argv[i] + 2, "version") == 0) {
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133 | mrb_show_version(mrb);
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134 | exit(EXIT_SUCCESS);
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135 | }
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136 | else if (strcmp(argv[i] + 2, "verbose") == 0) {
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137 | args->verbose = TRUE;
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138 | break;
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139 | }
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140 | else if (strcmp(argv[i] + 2, "copyright") == 0) {
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141 | mrb_show_copyright(mrb);
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142 | exit(EXIT_SUCCESS);
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143 | }
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144 | return -1;
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145 | default:
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146 | return i;
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147 | }
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148 | }
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149 | else {
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150 | break;
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151 | }
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152 | }
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153 | if (args->verbose && args->initname && (args->flags & DUMP_ENDIAN_MASK) == 0) {
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154 | fprintf(stderr, "%s: generating %s endian C file. specify -e/-E for cross compiling.\n",
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155 | args->prog, bigendian_p() ? "big" : "little");
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156 | }
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157 | return i;
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158 | }
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159 |
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160 | static void
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161 | cleanup(mrb_state *mrb, struct mrbc_args *args)
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162 | {
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163 | mrb_free(mrb, (void*)args->outfile);
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164 | mrb_close(mrb);
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165 | }
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166 |
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167 | static int
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168 | partial_hook(struct mrb_parser_state *p)
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169 | {
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170 | mrbc_context *c = p->cxt;
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171 | struct mrbc_args *args = (struct mrbc_args *)c->partial_data;
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172 | const char *fn;
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173 |
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174 | if (p->f) fclose(p->f);
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175 | if (args->idx >= args->argc) {
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176 | p->f = NULL;
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177 | return -1;
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178 | }
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179 | fn = args->argv[args->idx++];
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180 | p->f = fopen(fn, "r");
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181 | if (p->f == NULL) {
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182 | fprintf(stderr, "%s: cannot open program file. (%s)\n", args->prog, fn);
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183 | return -1;
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184 | }
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185 | mrb_parser_set_filename(p, fn);
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186 | return 0;
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187 | }
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188 |
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189 | static mrb_value
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190 | load_file(mrb_state *mrb, struct mrbc_args *args)
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191 | {
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192 | mrbc_context *c;
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193 | mrb_value result;
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194 | char *input = args->argv[args->idx];
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195 | FILE *infile;
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196 | mrb_bool need_close = FALSE;
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197 |
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198 | c = mrbc_context_new(mrb);
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199 | if (args->verbose)
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200 | c->dump_result = TRUE;
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201 | c->no_exec = TRUE;
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202 | if (input[0] == '-' && input[1] == '\0') {
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203 | infile = stdin;
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204 | }
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205 | else {
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206 | need_close = TRUE;
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207 | if ((infile = fopen(input, "r")) == NULL) {
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208 | fprintf(stderr, "%s: cannot open program file. (%s)\n", args->prog, input);
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209 | return mrb_nil_value();
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210 | }
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211 | }
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212 | mrbc_filename(mrb, c, input);
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213 | args->idx++;
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214 | if (args->idx < args->argc) {
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215 | need_close = FALSE;
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216 | mrbc_partial_hook(mrb, c, partial_hook, (void*)args);
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217 | }
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218 |
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219 | result = mrb_load_file_cxt(mrb, infile, c);
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220 | if (need_close) fclose(infile);
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221 | mrbc_context_free(mrb, c);
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222 | if (mrb_undef_p(result)) {
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223 | return mrb_nil_value();
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224 | }
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225 | return result;
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226 | }
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227 |
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228 | static int
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229 | dump_file(mrb_state *mrb, FILE *wfp, const char *outfile, struct RProc *proc, struct mrbc_args *args)
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230 | {
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231 | int n = MRB_DUMP_OK;
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232 | mrb_irep *irep = proc->body.irep;
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233 |
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234 | if (args->initname) {
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235 | n = mrb_dump_irep_cfunc(mrb, irep, args->flags, wfp, args->initname);
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236 | if (n == MRB_DUMP_INVALID_ARGUMENT) {
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237 | fprintf(stderr, "%s: invalid C language symbol name\n", args->initname);
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238 | }
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239 | }
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240 | else {
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241 | n = mrb_dump_irep_binary(mrb, irep, args->flags, wfp);
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242 | }
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243 | if (n != MRB_DUMP_OK) {
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244 | fprintf(stderr, "%s: error in mrb dump (%s) %d\n", args->prog, outfile, n);
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245 | }
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246 | return n;
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247 | }
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248 |
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249 | int
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250 | mrbc_main(int argc, char **argv)
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251 | {
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252 | mrb_state *mrb = mrb_open_allocf(mrb_default_allocf, NULL, TRUE);
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253 | int n, result;
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254 | struct mrbc_args args;
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255 | FILE *wfp;
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256 | mrb_value load;
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257 |
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258 | if (mrb == NULL) {
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259 | fputs("Invalid mrb_state, exiting mrbc\n", stderr);
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260 | return EXIT_FAILURE;
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261 | }
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262 |
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263 | n = parse_args(mrb, argc, argv, &args);
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264 | if (n < 0) {
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265 | cleanup(mrb, &args);
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266 | usage(argv[0]);
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267 | return EXIT_FAILURE;
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268 | }
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269 | if (n == argc) {
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270 | fprintf(stderr, "%s: no program file given\n", args.prog);
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271 | return EXIT_FAILURE;
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272 | }
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273 | if (args.outfile == NULL && !args.check_syntax) {
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274 | if (n + 1 == argc) {
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275 | args.outfile = get_outfilename(mrb, argv[n], args.initname ? C_EXT : RITEBIN_EXT);
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276 | }
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277 | else {
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278 | fprintf(stderr, "%s: output file should be specified to compile multiple files\n", args.prog);
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279 | return EXIT_FAILURE;
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280 | }
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281 | }
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282 |
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283 | args.idx = n;
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284 | load = load_file(mrb, &args);
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285 | if (mrb_nil_p(load)) {
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286 | cleanup(mrb, &args);
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287 | return EXIT_FAILURE;
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288 | }
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289 | if (args.check_syntax) {
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290 | printf("%s:%s:Syntax OK\n", args.prog, argv[n]);
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291 | }
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292 |
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293 | if (args.check_syntax) {
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294 | cleanup(mrb, &args);
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295 | return EXIT_SUCCESS;
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296 | }
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297 |
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298 | if (args.outfile) {
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299 | if (strcmp("-", args.outfile) == 0) {
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300 | wfp = stdout;
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301 | }
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302 | else if ((wfp = fopen(args.outfile, "wb")) == NULL) {
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303 | fprintf(stderr, "%s: cannot open output file:(%s)\n", args.prog, args.outfile);
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304 | return EXIT_FAILURE;
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305 | }
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306 | }
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307 | else {
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308 | fprintf(stderr, "Output file is required\n");
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309 | return EXIT_FAILURE;
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310 | }
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311 | result = dump_file(mrb, wfp, args.outfile, mrb_proc_ptr(load), &args);
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312 | fclose(wfp);
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313 | cleanup(mrb, &args);
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314 | if (result != MRB_DUMP_OK) {
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315 | return EXIT_FAILURE;
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316 | }
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317 | return EXIT_SUCCESS;
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318 | }
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