[331] | 1 | /*
|
---|
| 2 | ** env.c - ENV is a Hash-like accessor for environment variables.
|
---|
| 3 | **
|
---|
| 4 | */
|
---|
| 5 |
|
---|
| 6 | #include "mruby.h"
|
---|
| 7 | #include "mruby/hash.h"
|
---|
| 8 | #include "mruby/khash.h"
|
---|
| 9 | #include "mruby/class.h"
|
---|
| 10 | #include "mruby/array.h"
|
---|
| 11 | #include "mruby/string.h"
|
---|
| 12 | #include "mruby/variable.h"
|
---|
| 13 | #include <string.h>
|
---|
| 14 | #include <stdio.h>
|
---|
| 15 | #include <stdlib.h>
|
---|
| 16 |
|
---|
| 17 | #ifdef _WIN32
|
---|
| 18 | int
|
---|
| 19 | unsetenv(const char* name)
|
---|
| 20 | {
|
---|
| 21 | int r;
|
---|
| 22 | char* p = malloc(strlen(name) + 2);
|
---|
| 23 | if (!p) return -1;
|
---|
| 24 | strcpy(p, name);
|
---|
| 25 | strcat(p, "=");
|
---|
| 26 | r = _putenv(p);
|
---|
| 27 | free(p);
|
---|
| 28 | return r;
|
---|
| 29 | }
|
---|
| 30 |
|
---|
| 31 | int
|
---|
| 32 | setenv(const char* name, const char* value, int overwrite)
|
---|
| 33 | {
|
---|
| 34 | int r;
|
---|
| 35 | char* p = malloc(strlen(name) + strlen(value) + 2);
|
---|
| 36 | if (!p) return -1;
|
---|
| 37 | strcpy(p, name);
|
---|
| 38 | strcat(p, "=");
|
---|
| 39 | strcat(p, value);
|
---|
| 40 | r = _putenv(p);
|
---|
| 41 | free(p);
|
---|
| 42 | return r;
|
---|
| 43 | }
|
---|
| 44 | #define environ _environ
|
---|
| 45 | #else
|
---|
| 46 | extern char **environ;
|
---|
| 47 | #endif
|
---|
| 48 |
|
---|
| 49 |
|
---|
| 50 | mrb_value
|
---|
| 51 | mrb_env_aget(mrb_state *mrb, mrb_value self)
|
---|
| 52 | {
|
---|
| 53 | mrb_value key;
|
---|
| 54 | const char *cname, *cvalue;
|
---|
| 55 |
|
---|
| 56 | mrb_get_args(mrb, "S", &key);
|
---|
| 57 | cname = mrb_string_value_cstr(mrb, &key);
|
---|
| 58 | cvalue = getenv(cname);
|
---|
| 59 | if (cvalue != NULL) {
|
---|
| 60 | return mrb_str_new_cstr(mrb, cvalue);
|
---|
| 61 | } else {
|
---|
| 62 | return mrb_nil_value();
|
---|
| 63 | }
|
---|
| 64 | }
|
---|
| 65 |
|
---|
| 66 | mrb_value
|
---|
| 67 | mrb_env_has_key(mrb_state *mrb, mrb_value self)
|
---|
| 68 | {
|
---|
| 69 | mrb_value name;
|
---|
| 70 | const char *key;
|
---|
| 71 | mrb_get_args(mrb, "S", &name);
|
---|
| 72 | key = mrb_str_to_cstr(mrb, name);
|
---|
| 73 | if (getenv(key) != NULL) {
|
---|
| 74 | return mrb_true_value();
|
---|
| 75 | } else {
|
---|
| 76 | return mrb_false_value();
|
---|
| 77 | }
|
---|
| 78 | }
|
---|
| 79 |
|
---|
| 80 | mrb_value
|
---|
| 81 | mrb_env_keys(mrb_state *mrb, mrb_value self)
|
---|
| 82 | {
|
---|
| 83 | int i;
|
---|
| 84 | mrb_value ary;
|
---|
| 85 |
|
---|
| 86 | ary = mrb_ary_new(mrb);
|
---|
| 87 | for (i = 0; environ[i] != NULL; i++) {
|
---|
| 88 | char *str = strchr(environ[i], '=');
|
---|
| 89 | if (str != NULL) {
|
---|
| 90 | int len = str - environ[i];
|
---|
| 91 | mrb_ary_push(mrb, ary, mrb_str_new(mrb, environ[i], len));
|
---|
| 92 | }
|
---|
| 93 | }
|
---|
| 94 |
|
---|
| 95 | return ary;
|
---|
| 96 | }
|
---|
| 97 |
|
---|
| 98 | mrb_value
|
---|
| 99 | mrb_env_values(mrb_state *mrb, mrb_value self)
|
---|
| 100 | {
|
---|
| 101 | int i;
|
---|
| 102 | mrb_value ary;
|
---|
| 103 |
|
---|
| 104 | ary = mrb_ary_new(mrb);
|
---|
| 105 | for (i = 0; environ[i] != NULL; i++) {
|
---|
| 106 | char *str = strchr(environ[i], '=');
|
---|
| 107 | if (str) {
|
---|
| 108 | int len;
|
---|
| 109 | str++;
|
---|
| 110 | len = strlen(str);
|
---|
| 111 | mrb_ary_push(mrb, ary, mrb_str_new(mrb, str, len));
|
---|
| 112 | }
|
---|
| 113 | }
|
---|
| 114 |
|
---|
| 115 | return ary;
|
---|
| 116 | }
|
---|
| 117 |
|
---|
| 118 | static mrb_value
|
---|
| 119 | mrb_env_size(mrb_state *mrb, mrb_value self)
|
---|
| 120 | {
|
---|
| 121 | int i;
|
---|
| 122 |
|
---|
| 123 | for (i = 0; environ[i] != NULL; i++)
|
---|
| 124 | ;
|
---|
| 125 |
|
---|
| 126 | return mrb_fixnum_value(i);
|
---|
| 127 | }
|
---|
| 128 |
|
---|
| 129 | static mrb_value
|
---|
| 130 | mrb_env_to_hash(mrb_state *mrb, mrb_value self)
|
---|
| 131 | {
|
---|
| 132 | int i;
|
---|
| 133 | mrb_value hash;
|
---|
| 134 |
|
---|
| 135 | hash = mrb_hash_new(mrb);
|
---|
| 136 | for (i = 0; environ[i] != NULL; i++) {
|
---|
| 137 | char *str = strchr(environ[i], '=');
|
---|
| 138 | if (str != NULL) {
|
---|
| 139 | mrb_value val;
|
---|
| 140 | int ai = mrb_gc_arena_save(mrb);
|
---|
| 141 | int len = str - environ[i];
|
---|
| 142 | mrb_value key = mrb_str_new(mrb, environ[i], len);
|
---|
| 143 | str++;
|
---|
| 144 | val = mrb_str_new(mrb, str, strlen(str));
|
---|
| 145 | mrb_hash_set(mrb, hash, key, val);
|
---|
| 146 | mrb_gc_arena_restore(mrb, ai);
|
---|
| 147 | }
|
---|
| 148 | }
|
---|
| 149 |
|
---|
| 150 | return hash;
|
---|
| 151 | }
|
---|
| 152 |
|
---|
| 153 | static mrb_value
|
---|
| 154 | mrb_env_to_a(mrb_state *mrb, mrb_value self)
|
---|
| 155 | {
|
---|
| 156 | int i;
|
---|
| 157 | mrb_value ary;
|
---|
| 158 |
|
---|
| 159 | ary = mrb_ary_new(mrb);
|
---|
| 160 | for (i = 0; environ[i] != NULL; i++) {
|
---|
| 161 | char *str = strchr(environ[i], '=');
|
---|
| 162 | if (str != NULL) {
|
---|
| 163 | int ai = mrb_gc_arena_save(mrb);
|
---|
| 164 | mrb_value elem = mrb_ary_new(mrb);
|
---|
| 165 | int len = str - environ[i];
|
---|
| 166 | mrb_ary_push(mrb, elem, mrb_str_new(mrb, environ[i], len));
|
---|
| 167 | str++;
|
---|
| 168 | mrb_ary_push(mrb, elem, mrb_str_new(mrb, str, strlen(str)));
|
---|
| 169 | mrb_ary_push(mrb, ary, elem);
|
---|
| 170 | mrb_gc_arena_restore(mrb, ai);
|
---|
| 171 | }
|
---|
| 172 | }
|
---|
| 173 |
|
---|
| 174 | return ary;
|
---|
| 175 | }
|
---|
| 176 |
|
---|
| 177 | static mrb_value
|
---|
| 178 | mrb_env_inspect(mrb_state *mrb, mrb_value self)
|
---|
| 179 | {
|
---|
| 180 | mrb_value hash = mrb_env_to_hash(mrb, self);
|
---|
| 181 | return mrb_funcall(mrb, hash, "inspect", 0);
|
---|
| 182 | }
|
---|
| 183 |
|
---|
| 184 | static mrb_value
|
---|
| 185 | mrb_env_to_s(mrb_state *mrb, mrb_value self)
|
---|
| 186 | {
|
---|
| 187 | return mrb_str_new_cstr(mrb, "ENV");
|
---|
| 188 | }
|
---|
| 189 |
|
---|
| 190 | static mrb_value
|
---|
| 191 | mrb_env_aset(mrb_state *mrb, mrb_value self)
|
---|
| 192 | {
|
---|
| 193 | mrb_value name, value;
|
---|
| 194 | const char *cname, *cvalue;
|
---|
| 195 |
|
---|
| 196 | mrb_get_args(mrb, "So", &name, &value);
|
---|
| 197 | cname = mrb_string_value_cstr(mrb, &name);
|
---|
| 198 |
|
---|
| 199 | if (mrb_nil_p(value)) {
|
---|
| 200 | if (unsetenv(cname) != 0) {
|
---|
| 201 | mrb_raise(mrb, E_RUNTIME_ERROR, "can't delete environment variable");
|
---|
| 202 | }
|
---|
| 203 | } else {
|
---|
| 204 | mrb_convert_type(mrb, value, MRB_TT_STRING, "String", "to_str");
|
---|
| 205 | cvalue = mrb_string_value_cstr(mrb, &value);
|
---|
| 206 | if (setenv(cname, cvalue, 1) != 0) {
|
---|
| 207 | mrb_raise(mrb, E_RUNTIME_ERROR, "can't change environment variable");
|
---|
| 208 | }
|
---|
| 209 | }
|
---|
| 210 | return value;
|
---|
| 211 | }
|
---|
| 212 |
|
---|
| 213 | void
|
---|
| 214 | mrb_mruby_env_gem_init(mrb_state *mrb)
|
---|
| 215 | {
|
---|
| 216 | struct RObject *e;
|
---|
| 217 |
|
---|
| 218 | e = (struct RObject*) mrb_obj_alloc(mrb, MRB_TT_OBJECT, mrb->object_class);
|
---|
| 219 | #if defined(MRUBY_RELEASE_NO) && MRUBY_RELEASE_NO >= 10000
|
---|
| 220 | mrb_include_module(mrb, (struct RClass*)e, mrb_module_get(mrb, "Enumerable"));
|
---|
| 221 | #else
|
---|
| 222 | mrb_include_module(mrb, (struct RClass*)e, mrb_class_get(mrb, "Enumerable"));
|
---|
| 223 | #endif
|
---|
| 224 |
|
---|
| 225 | mrb_define_singleton_method(mrb, e,"[]", mrb_env_aget, MRB_ARGS_REQ(1));
|
---|
| 226 | mrb_define_singleton_method(mrb, e,"[]=", mrb_env_aset, MRB_ARGS_REQ(2));
|
---|
| 227 | mrb_define_singleton_method(mrb, e,"has_key?", mrb_env_has_key, MRB_ARGS_REQ(1));
|
---|
| 228 | mrb_define_singleton_method(mrb, e,"inspect", mrb_env_inspect, MRB_ARGS_NONE());
|
---|
| 229 | mrb_define_singleton_method(mrb, e,"keys", mrb_env_keys, MRB_ARGS_NONE());
|
---|
| 230 | mrb_define_singleton_method(mrb, e,"size", mrb_env_size, MRB_ARGS_NONE());
|
---|
| 231 | mrb_define_singleton_method(mrb, e,"store", mrb_env_aset, MRB_ARGS_REQ(2));
|
---|
| 232 | mrb_define_singleton_method(mrb, e,"to_a", mrb_env_to_a, MRB_ARGS_NONE());
|
---|
| 233 | mrb_define_singleton_method(mrb, e,"to_hash", mrb_env_to_hash, MRB_ARGS_NONE());
|
---|
| 234 | mrb_define_singleton_method(mrb, e,"to_s", mrb_env_to_s, MRB_ARGS_NONE());
|
---|
| 235 | mrb_define_singleton_method(mrb, e,"values", mrb_env_values, MRB_ARGS_NONE());
|
---|
| 236 |
|
---|
| 237 | mrb_define_global_const(mrb, "ENV", mrb_obj_value(e));
|
---|
| 238 | }
|
---|
| 239 |
|
---|
| 240 | void
|
---|
| 241 | mrb_mruby_env_gem_final(mrb_state *mrb)
|
---|
| 242 | {
|
---|
| 243 | }
|
---|