src/if_ruby.c

   1 /* vi:set ts=8 sts=4 sw=4:
   2  *
   3  * VIM - Vi IMproved    by Bram Moolenaar
   4  *
   5  * Ruby interface by Shugo Maeda
   6  *   with improvements by SegPhault (Ryan Paul)
   7  *
   8  * Do ":help uganda"  in Vim to read copying and usage conditions.
   9  * Do ":help credits" in Vim to see a list of people who contributed.
  10  * See README.txt for an overview of the Vim source code.
  11  */
  12
  13 #include <stdio.h>
  14 #include <string.h>
  15
  16 #ifdef _WIN32
  17 # if !defined(DYNAMIC_RUBY_VER) || (DYNAMIC_RUBY_VER < 18)
  18 #   define NT
  19 # endif
  20 # ifndef DYNAMIC_RUBY
  21 #  define IMPORT /* For static dll usage __declspec(dllimport) */
  22 #  define RUBYEXTERN __declspec(dllimport)
  23 # endif
  24 #endif
  25 #ifndef RUBYEXTERN
  26 # define RUBYEXTERN extern
  27 #endif
  28
  29 /*
  30  * This is tricky.  In ruby.h there is (inline) function rb_class_of()
  31  * definition.  This function use these variables.  But we want function to
  32  * use dll_* variables.
  33  */
  34 #ifdef DYNAMIC_RUBY
  35 # define rb_cFalseClass         (*dll_rb_cFalseClass)
  36 # define rb_cFixnum             (*dll_rb_cFixnum)
  37 # define rb_cNilClass           (*dll_rb_cNilClass)
  38 # define rb_cSymbol             (*dll_rb_cSymbol)
  39 # define rb_cTrueClass          (*dll_rb_cTrueClass)
  40 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
  41 /*
  42  * On ver 1.8, all Ruby functions are exported with "__declspec(dllimport)"
  43  * in ruby.h.  But it causes trouble for these variables, because it is
  44  * defined in this file.  When defined this RUBY_EXPORT it modified to
  45  * "extern" and be able to avoid this problem.
  46  */
  47 #  define RUBY_EXPORT
  48 # endif
  49 #endif
  50
  51 /* suggested by Ariya Mizutani */
  52 #if (_MSC_VER == 1200)
  53 # undef _WIN32_WINNT
  54 #endif
  55
  56 #if (defined(RUBY_VERSION) && RUBY_VERSION >= 19) \
  57     || (defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 19)
  58 # define RUBY19_OR_LATER 1
  59 #endif
  60
  61 #if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 19
  62 /* Ruby 1.9 defines a number of static functions which use rb_num2long and
  63  * rb_int2big */
  64 # define rb_num2long rb_num2long_stub
  65 # define rb_int2big rb_int2big_stub
  66 #endif
  67
  68 #include <ruby.h>
  69 #ifdef RUBY19_OR_LATER
  70 # include <ruby/encoding.h>
  71 #endif
  72
  73 #undef EXTERN
  74 #undef _
  75
  76 /* T_DATA defined both by Ruby and Mac header files, hack around it... */
  77 #if defined(MACOS_X_UNIX) || defined(macintosh)
  78 # define __OPENTRANSPORT__
  79 # define __OPENTRANSPORTPROTOCOL__
  80 # define __OPENTRANSPORTPROVIDERS__
  81 #endif
  82
  83 /*
  84  * Backward compatiblity for Ruby 1.8 and earlier.
  85  * Ruby 1.9 does not provide STR2CSTR, instead StringValuePtr is provided.
  86  * Ruby 1.9 does not provide RXXX(s)->len and RXXX(s)->ptr, instead
  87  * RXXX_LEN(s) and RXXX_PTR(s) are provided.
  88  */
  89 #ifndef StringValuePtr
  90 # define StringValuePtr(s) STR2CSTR(s)
  91 #endif
  92 #ifndef RARRAY_LEN
  93 # define RARRAY_LEN(s) RARRAY(s)->len
  94 #endif
  95 #ifndef RARRAY_PTR
  96 # define RARRAY_PTR(s) RARRAY(s)->ptr
  97 #endif
  98 #ifndef RSTRING_LEN
  99 # define RSTRING_LEN(s) RSTRING(s)->len
 100 #endif
 101 #ifndef RSTRING_PTR
 102 # define RSTRING_PTR(s) RSTRING(s)->ptr
 103 #endif
 104
 105 #include "vim.h"
 106 #include "version.h"
 107
 108 #if defined(PROTO) && !defined(FEAT_RUBY)
 109 /* Define these to be able to generate the function prototypes. */
 110 # define VALUE int
 111 # define RUBY_DATA_FUNC int
 112 #endif
 113
 114 static int ruby_initialized = 0;
 115 static VALUE objtbl;
 116
 117 static VALUE mVIM;
 118 static VALUE cBuffer;
 119 static VALUE cVimWindow;
 120 static VALUE eDeletedBufferError;
 121 static VALUE eDeletedWindowError;
 122
 123 static int ensure_ruby_initialized(void);
 124 static void error_print(int);
 125 static void ruby_io_init(void);
 126 static void ruby_vim_init(void);
 127
 128 #if defined(DYNAMIC_RUBY) || defined(PROTO)
 129 #ifdef PROTO
 130 # define HINSTANCE int          /* for generating prototypes */
 131 #endif
 132
 133 /*
 134  * Wrapper defines
 135  */
 136 #define rb_assoc_new                    dll_rb_assoc_new
 137 #define rb_cObject                      (*dll_rb_cObject)
 138 #define rb_check_type                   dll_rb_check_type
 139 #define rb_class_path                   dll_rb_class_path
 140 #define rb_data_object_alloc            dll_rb_data_object_alloc
 141 #define rb_define_class_under           dll_rb_define_class_under
 142 #define rb_define_const                 dll_rb_define_const
 143 #define rb_define_global_function       dll_rb_define_global_function
 144 #define rb_define_method                dll_rb_define_method
 145 #define rb_define_module                dll_rb_define_module
 146 #define rb_define_module_function       dll_rb_define_module_function
 147 #define rb_define_singleton_method      dll_rb_define_singleton_method
 148 #define rb_define_virtual_variable      dll_rb_define_virtual_variable
 149 #define rb_stdout                       (*dll_rb_stdout)
 150 #define rb_eArgError                    (*dll_rb_eArgError)
 151 #define rb_eIndexError                  (*dll_rb_eIndexError)
 152 #define rb_eRuntimeError                (*dll_rb_eRuntimeError)
 153 #define rb_eStandardError               (*dll_rb_eStandardError)
 154 #define rb_eval_string_protect          dll_rb_eval_string_protect
 155 #define rb_global_variable              dll_rb_global_variable
 156 #define rb_hash_aset                    dll_rb_hash_aset
 157 #define rb_hash_new                     dll_rb_hash_new
 158 #define rb_inspect                      dll_rb_inspect
 159 #define rb_int2inum                     dll_rb_int2inum
 160 #define rb_lastline_get                 dll_rb_lastline_get
 161 #define rb_lastline_set                 dll_rb_lastline_set
 162 #define rb_load_protect                 dll_rb_load_protect
 163 #define rb_num2long                     dll_rb_num2long
 164 #define rb_num2ulong                    dll_rb_num2ulong
 165 #define rb_obj_alloc                    dll_rb_obj_alloc
 166 #define rb_obj_as_string                dll_rb_obj_as_string
 167 #define rb_obj_id                       dll_rb_obj_id
 168 #define rb_raise                        dll_rb_raise
 169 #define rb_str2cstr                     dll_rb_str2cstr
 170 #define rb_str_cat                      dll_rb_str_cat
 171 #define rb_str_concat                   dll_rb_str_concat
 172 #define rb_str_new                      dll_rb_str_new
 173 #define rb_str_new2                     dll_rb_str_new2
 174 #if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
 175 # define rb_string_value_ptr            dll_rb_string_value_ptr
 176 # define rb_float_new                   dll_rb_float_new
 177 # define rb_ary_new                     dll_rb_ary_new
 178 # define rb_ary_push                    dll_rb_ary_push
 179 #endif
 180 #ifdef RUBY19_OR_LATER
 181 # define rb_errinfo                     dll_rb_errinfo
 182 #else
 183 # define ruby_errinfo                   (*dll_ruby_errinfo)
 184 #endif
 185 #define ruby_init                       dll_ruby_init
 186 #define ruby_init_loadpath              dll_ruby_init_loadpath
 187 #define NtInitialize                    dll_NtInitialize
 188 #if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
 189 # define rb_w32_snprintf                dll_rb_w32_snprintf
 190 #endif
 191
 192 #ifdef RUBY19_OR_LATER
 193 # define ruby_script                    dll_ruby_script
 194 # define rb_enc_find_index              dll_rb_enc_find_index
 195 # define rb_enc_find                    dll_rb_enc_find
 196 # define rb_enc_str_new                 dll_rb_enc_str_new
 197 # define rb_sprintf                     dll_rb_sprintf
 198 # define ruby_init_stack                dll_ruby_init_stack
 199 #endif
 200
 201 /*
 202  * Pointers for dynamic link
 203  */
 204 static VALUE (*dll_rb_assoc_new) (VALUE, VALUE);
 205 static VALUE *dll_rb_cFalseClass;
 206 static VALUE *dll_rb_cFixnum;
 207 static VALUE *dll_rb_cNilClass;
 208 static VALUE *dll_rb_cObject;
 209 static VALUE *dll_rb_cSymbol;
 210 static VALUE *dll_rb_cTrueClass;
 211 static void (*dll_rb_check_type) (VALUE,int);
 212 static VALUE (*dll_rb_class_path) (VALUE);
 213 static VALUE (*dll_rb_data_object_alloc) (VALUE, void*, RUBY_DATA_FUNC, RUBY_DATA_FUNC);
 214 static VALUE (*dll_rb_define_class_under) (VALUE, const char*, VALUE);
 215 static void (*dll_rb_define_const) (VALUE,const char*,VALUE);
 216 static void (*dll_rb_define_global_function) (const char*,VALUE(*)(),int);
 217 static void (*dll_rb_define_method) (VALUE,const char*,VALUE(*)(),int);
 218 static VALUE (*dll_rb_define_module) (const char*);
 219 static void (*dll_rb_define_module_function) (VALUE,const char*,VALUE(*)(),int);
 220 static void (*dll_rb_define_singleton_method) (VALUE,const char*,VALUE(*)(),int);
 221 static void (*dll_rb_define_virtual_variable) (const char*,VALUE(*)(),void(*)());
 222 static VALUE *dll_rb_stdout;
 223 static VALUE *dll_rb_eArgError;
 224 static VALUE *dll_rb_eIndexError;
 225 static VALUE *dll_rb_eRuntimeError;
 226 static VALUE *dll_rb_eStandardError;
 227 static VALUE (*dll_rb_eval_string_protect) (const char*, int*);
 228 static void (*dll_rb_global_variable) (VALUE*);
 229 static VALUE (*dll_rb_hash_aset) (VALUE, VALUE, VALUE);
 230 static VALUE (*dll_rb_hash_new) (void);
 231 static VALUE (*dll_rb_inspect) (VALUE);
 232 static VALUE (*dll_rb_int2inum) (long);
 233 static VALUE (*dll_rb_int2inum) (long);
 234 static VALUE (*dll_rb_lastline_get) (void);
 235 static void (*dll_rb_lastline_set) (VALUE);
 236 static void (*dll_rb_load_protect) (VALUE, int, int*);
 237 static long (*dll_rb_num2long) (VALUE);
 238 static unsigned long (*dll_rb_num2ulong) (VALUE);
 239 static VALUE (*dll_rb_obj_alloc) (VALUE);
 240 static VALUE (*dll_rb_obj_as_string) (VALUE);
 241 static VALUE (*dll_rb_obj_id) (VALUE);
 242 static void (*dll_rb_raise) (VALUE, const char*, ...);
 243 static char *(*dll_rb_str2cstr) (VALUE,int*);
 244 static VALUE (*dll_rb_str_cat) (VALUE, const char*, long);
 245 static VALUE (*dll_rb_str_concat) (VALUE, VALUE);
 246 static VALUE (*dll_rb_str_new) (const char*, long);
 247 static VALUE (*dll_rb_str_new2) (const char*);
 248 #ifdef RUBY19_OR_LATER
 249 static VALUE (*dll_rb_errinfo) (void);
 250 #else
 251 static VALUE *dll_ruby_errinfo;
 252 #endif
 253 static void (*dll_ruby_init) (void);
 254 static void (*dll_ruby_init_loadpath) (void);
 255 static void (*dll_NtInitialize) (int*, char***);
 256 #if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
 257 static char * (*dll_rb_string_value_ptr) (volatile VALUE*);
 258 static VALUE (*dll_rb_float_new) (double);
 259 static VALUE (*dll_rb_ary_new) (void);
 260 static VALUE (*dll_rb_ary_push) (VALUE, VALUE);
 261 #endif
 262 #ifdef RUBY19_OR_LATER
 263 static VALUE (*dll_rb_int2big)(SIGNED_VALUE);
 264 #endif
 265 #if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
 266 static int (*dll_rb_w32_snprintf)(char*, size_t, const char*, ...);
 267 #endif
 268
 269 #ifdef RUBY19_OR_LATER
 270 static void (*dll_ruby_script) (const char*);
 271 static int (*dll_rb_enc_find_index) (const char*);
 272 static rb_encoding* (*dll_rb_enc_find) (const char*);
 273 static VALUE (*dll_rb_enc_str_new) (const char*, long, rb_encoding*);
 274 static VALUE (*dll_rb_sprintf) (const char*, ...);
 275 static void (*ruby_init_stack)(VALUE*);
 276 #endif
 277
 278 #ifdef RUBY19_OR_LATER
 279 static SIGNED_VALUE rb_num2long_stub(VALUE x)
 280 {
 281     return dll_rb_num2long(x);
 282 }
 283 static VALUE rb_int2big_stub(SIGNED_VALUE x)
 284 {
 285     return dll_rb_int2big(x);
 286 }
 287 #endif
 288
 289 static HINSTANCE hinstRuby = 0; /* Instance of ruby.dll */
 290
 291 /*
 292  * Table of name to function pointer of ruby.
 293  */
 294 #define RUBY_PROC FARPROC
 295 static struct
 296 {
 297     char *name;
 298     RUBY_PROC *ptr;
 299 } ruby_funcname_table[] =
 300 {
 301     {"rb_assoc_new", (RUBY_PROC*)&dll_rb_assoc_new},
 302     {"rb_cFalseClass", (RUBY_PROC*)&dll_rb_cFalseClass},
 303     {"rb_cFixnum", (RUBY_PROC*)&dll_rb_cFixnum},
 304     {"rb_cNilClass", (RUBY_PROC*)&dll_rb_cNilClass},
 305     {"rb_cObject", (RUBY_PROC*)&dll_rb_cObject},
 306     {"rb_cSymbol", (RUBY_PROC*)&dll_rb_cSymbol},
 307     {"rb_cTrueClass", (RUBY_PROC*)&dll_rb_cTrueClass},
 308     {"rb_check_type", (RUBY_PROC*)&dll_rb_check_type},
 309     {"rb_class_path", (RUBY_PROC*)&dll_rb_class_path},
 310     {"rb_data_object_alloc", (RUBY_PROC*)&dll_rb_data_object_alloc},
 311     {"rb_define_class_under", (RUBY_PROC*)&dll_rb_define_class_under},
 312     {"rb_define_const", (RUBY_PROC*)&dll_rb_define_const},
 313     {"rb_define_global_function", (RUBY_PROC*)&dll_rb_define_global_function},
 314     {"rb_define_method", (RUBY_PROC*)&dll_rb_define_method},
 315     {"rb_define_module", (RUBY_PROC*)&dll_rb_define_module},
 316     {"rb_define_module_function", (RUBY_PROC*)&dll_rb_define_module_function},
 317     {"rb_define_singleton_method", (RUBY_PROC*)&dll_rb_define_singleton_method},
 318     {"rb_define_virtual_variable", (RUBY_PROC*)&dll_rb_define_virtual_variable},
 319     {"rb_stdout", (RUBY_PROC*)&dll_rb_stdout},
 320     {"rb_eArgError", (RUBY_PROC*)&dll_rb_eArgError},
 321     {"rb_eIndexError", (RUBY_PROC*)&dll_rb_eIndexError},
 322     {"rb_eRuntimeError", (RUBY_PROC*)&dll_rb_eRuntimeError},
 323     {"rb_eStandardError", (RUBY_PROC*)&dll_rb_eStandardError},
 324     {"rb_eval_string_protect", (RUBY_PROC*)&dll_rb_eval_string_protect},
 325     {"rb_global_variable", (RUBY_PROC*)&dll_rb_global_variable},
 326     {"rb_hash_aset", (RUBY_PROC*)&dll_rb_hash_aset},
 327     {"rb_hash_new", (RUBY_PROC*)&dll_rb_hash_new},
 328     {"rb_inspect", (RUBY_PROC*)&dll_rb_inspect},
 329     {"rb_int2inum", (RUBY_PROC*)&dll_rb_int2inum},
 330     {"rb_lastline_get", (RUBY_PROC*)&dll_rb_lastline_get},
 331     {"rb_lastline_set", (RUBY_PROC*)&dll_rb_lastline_set},
 332     {"rb_load_protect", (RUBY_PROC*)&dll_rb_load_protect},
 333     {"rb_num2long", (RUBY_PROC*)&dll_rb_num2long},
 334     {"rb_num2ulong", (RUBY_PROC*)&dll_rb_num2ulong},
 335     {"rb_obj_alloc", (RUBY_PROC*)&dll_rb_obj_alloc},
 336     {"rb_obj_as_string", (RUBY_PROC*)&dll_rb_obj_as_string},
 337     {"rb_obj_id", (RUBY_PROC*)&dll_rb_obj_id},
 338     {"rb_raise", (RUBY_PROC*)&dll_rb_raise},
 339     {"rb_str2cstr", (RUBY_PROC*)&dll_rb_str2cstr},
 340     {"rb_str_cat", (RUBY_PROC*)&dll_rb_str_cat},
 341     {"rb_str_concat", (RUBY_PROC*)&dll_rb_str_concat},
 342     {"rb_str_new", (RUBY_PROC*)&dll_rb_str_new},
 343     {"rb_str_new2", (RUBY_PROC*)&dll_rb_str_new2},
 344 #ifdef RUBY19_OR_LATER
 345     {"rb_errinfo", (RUBY_PROC*)&dll_rb_errinfo},
 346 #else
 347     {"ruby_errinfo", (RUBY_PROC*)&dll_ruby_errinfo},
 348 #endif
 349     {"ruby_init", (RUBY_PROC*)&dll_ruby_init},
 350     {"ruby_init_loadpath", (RUBY_PROC*)&dll_ruby_init_loadpath},
 351     {
 352 #if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER < 19
 353     "NtInitialize",
 354 #else
 355     "ruby_sysinit",
 356 #endif
 357                         (RUBY_PROC*)&dll_NtInitialize},
 358 #if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
 359     {"rb_w32_snprintf", (RUBY_PROC*)&dll_rb_w32_snprintf},
 360 #endif
 361 #if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
 362     {"rb_string_value_ptr", (RUBY_PROC*)&dll_rb_string_value_ptr},
 363     {"rb_float_new", (RUBY_PROC*)&dll_rb_float_new},
 364     {"rb_ary_new", (RUBY_PROC*)&dll_rb_ary_new},
 365     {"rb_ary_push", (RUBY_PROC*)&dll_rb_ary_push},
 366 #endif
 367 #ifdef RUBY19_OR_LATER
 368     {"rb_int2big", (RUBY_PROC*)&dll_rb_int2big},
 369     {"ruby_script", (RUBY_PROC*)&dll_ruby_script},
 370     {"rb_enc_find_index", (RUBY_PROC*)&dll_rb_enc_find_index},
 371     {"rb_enc_find", (RUBY_PROC*)&dll_rb_enc_find},
 372     {"rb_enc_str_new", (RUBY_PROC*)&dll_rb_enc_str_new},
 373     {"rb_sprintf", (RUBY_PROC*)&dll_rb_sprintf},
 374     {"ruby_init_stack", (RUBY_PROC*)&dll_ruby_init_stack},
 375 #endif
 376     {"", NULL},
 377 };
 378
 379 /*
 380  * Free ruby.dll
 381  */
 382     static void
 383 end_dynamic_ruby()
 384 {
 385     if (hinstRuby)
 386     {
 387         FreeLibrary(hinstRuby);
 388         hinstRuby = 0;
 389     }
 390 }
 391
 392 /*
 393  * Load library and get all pointers.
 394  * Parameter 'libname' provides name of DLL.
 395  * Return OK or FAIL.
 396  */
 397     static int
 398 ruby_runtime_link_init(char *libname, int verbose)
 399 {
 400     int i;
 401
 402     if (hinstRuby)
 403         return OK;
 404     hinstRuby = LoadLibrary(libname);
 405     if (!hinstRuby)
 406     {
 407         if (verbose)
 408             EMSG2(_(e_loadlib), libname);
 409         return FAIL;
 410     }
 411
 412     for (i = 0; ruby_funcname_table[i].ptr; ++i)
 413     {
 414         if (!(*ruby_funcname_table[i].ptr = GetProcAddress(hinstRuby,
 415                         ruby_funcname_table[i].name)))
 416         {
 417             FreeLibrary(hinstRuby);
 418             hinstRuby = 0;
 419             if (verbose)
 420                 EMSG2(_(e_loadfunc), ruby_funcname_table[i].name);
 421             return FAIL;
 422         }
 423     }
 424     return OK;
 425 }
 426
 427 /*
 428  * If ruby is enabled (there is installed ruby on Windows system) return TRUE,
 429  * else FALSE.
 430  */
 431     int
 432 ruby_enabled(verbose)
 433     int         verbose;
 434 {
 435     return ruby_runtime_link_init(DYNAMIC_RUBY_DLL, verbose) == OK;
 436 }
 437 #endif /* defined(DYNAMIC_RUBY) || defined(PROTO) */
 438
 439     void
 440 ruby_end()
 441 {
 442 #ifdef DYNAMIC_RUBY
 443     end_dynamic_ruby();
 444 #endif
 445 }
 446
 447 void ex_ruby(exarg_T *eap)
 448 {
 449     int state;
 450     char *script = NULL;
 451
 452     script = (char *)script_get(eap, eap->arg);
 453     if (!eap->skip && ensure_ruby_initialized())
 454     {
 455         if (script == NULL)
 456             rb_eval_string_protect((char *)eap->arg, &state);
 457         else
 458             rb_eval_string_protect(script, &state);
 459         if (state)
 460             error_print(state);
 461     }
 462     vim_free(script);
 463 }
 464
 465 /*
 466  *  In Ruby 1.9 or later, ruby String object has encoding.
 467  *  conversion buffer string of vim to ruby String object using
 468  *  VIM encoding option.
 469  */
 470     static VALUE
 471 vim_str2rb_enc_str(const char *s)
 472 {
 473 #ifdef RUBY19_OR_LATER
 474     int isnum;
 475     long lval;
 476     char_u *sval;
 477     rb_encoding *enc;
 478
 479     isnum = get_option_value((char_u *)"enc", &lval, &sval, 0);
 480     if (isnum == 0)
 481     {
 482         enc = rb_enc_find((char *)sval);
 483         vim_free(sval);
 484         if (enc) {
 485             return rb_enc_str_new(s, strlen(s), enc);
 486         }
 487     }
 488 #endif
 489     return rb_str_new2(s);
 490 }
 491
 492     static VALUE
 493 eval_enc_string_protect(const char *str, int *state)
 494 {
 495 #ifdef RUBY19_OR_LATER
 496     int isnum;
 497     long lval;
 498     char_u *sval;
 499     rb_encoding *enc;
 500     VALUE v;
 501
 502     isnum = get_option_value((char_u *)"enc", &lval, &sval, 0);
 503     if (isnum == 0)
 504     {
 505         enc = rb_enc_find((char *)sval);
 506         vim_free(sval);
 507         if (enc)
 508         {
 509             v = rb_sprintf("#-*- coding:%s -*-\n%s", rb_enc_name(enc), str);
 510             return rb_eval_string_protect(StringValuePtr(v), state);
 511         }
 512     }
 513 #endif
 514     return rb_eval_string_protect(str, state);
 515 }
 516
 517 void ex_rubydo(exarg_T *eap)
 518 {
 519     int state;
 520     linenr_T i;
 521
 522     if (ensure_ruby_initialized())
 523     {
 524         if (u_save(eap->line1 - 1, eap->line2 + 1) != OK)
 525             return;
 526         for (i = eap->line1; i <= eap->line2; i++) {
 527             VALUE line, oldline;
 528
 529             line = oldline = vim_str2rb_enc_str((char *)ml_get(i));
 530             rb_lastline_set(line);
 531             eval_enc_string_protect((char *) eap->arg, &state);
 532             if (state) {
 533                 error_print(state);
 534                 break;
 535             }
 536             line = rb_lastline_get();
 537             if (!NIL_P(line)) {
 538                 if (TYPE(line) != T_STRING) {
 539                     EMSG(_("E265: $_ must be an instance of String"));
 540                     return;
 541                 }
 542                 ml_replace(i, (char_u *) StringValuePtr(line), 1);
 543                 changed();
 544 #ifdef SYNTAX_HL
 545                 syn_changed(i); /* recompute syntax hl. for this line */
 546 #endif
 547             }
 548         }
 549         check_cursor();
 550         update_curbuf(NOT_VALID);
 551     }
 552 }
 553
 554 void ex_rubyfile(exarg_T *eap)
 555 {
 556     int state;
 557
 558     if (ensure_ruby_initialized())
 559     {
 560         rb_load_protect(rb_str_new2((char *) eap->arg), 0, &state);
 561         if (state) error_print(state);
 562     }
 563 }
 564
 565 void ruby_buffer_free(buf_T *buf)
 566 {
 567     if (buf->b_ruby_ref)
 568     {
 569         rb_hash_aset(objtbl, rb_obj_id((VALUE) buf->b_ruby_ref), Qnil);
 570         RDATA(buf->b_ruby_ref)->data = NULL;
 571     }
 572 }
 573
 574 void ruby_window_free(win_T *win)
 575 {
 576     if (win->w_ruby_ref)
 577     {
 578         rb_hash_aset(objtbl, rb_obj_id((VALUE) win->w_ruby_ref), Qnil);
 579         RDATA(win->w_ruby_ref)->data = NULL;
 580     }
 581 }
 582
 583 static int ensure_ruby_initialized(void)
 584 {
 585     if (!ruby_initialized)
 586     {
 587 #ifdef DYNAMIC_RUBY
 588         if (ruby_enabled(TRUE))
 589         {
 590 #endif
 591 #ifdef _WIN32
 592             /* suggested by Ariya Mizutani */
 593             int argc = 1;
 594             char *argv[] = {"gvim.exe"};
 595             NtInitialize(&argc, &argv);
 596 #endif
 597 #ifdef RUBY19_OR_LATER
 598             RUBY_INIT_STACK;
 599 #endif
 600             ruby_init();
 601 #ifdef RUBY19_OR_LATER
 602             ruby_script("vim-ruby");
 603 #endif
 604             ruby_init_loadpath();
 605             ruby_io_init();
 606 #ifdef RUBY19_OR_LATER
 607             rb_enc_find_index("encdb");
 608 #endif
 609             ruby_vim_init();
 610             ruby_initialized = 1;
 611 #ifdef DYNAMIC_RUBY
 612         }
 613         else
 614         {
 615             EMSG(_("E266: Sorry, this command is disabled, the Ruby library could not be loaded."));
 616             return 0;
 617         }
 618 #endif
 619     }
 620     return ruby_initialized;
 621 }
 622
 623 static void error_print(int state)
 624 {
 625 #ifndef DYNAMIC_RUBY
 626 #if !(defined(RUBY_VERSION) && RUBY_VERSION >= 19) \
 627     && !(defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 19)
 628     RUBYEXTERN VALUE ruby_errinfo;
 629 #endif
 630 #endif
 631     VALUE eclass;
 632     VALUE einfo;
 633     char buff[BUFSIZ];
 634
 635 #define TAG_RETURN      0x1
 636 #define TAG_BREAK       0x2
 637 #define TAG_NEXT        0x3
 638 #define TAG_RETRY       0x4
 639 #define TAG_REDO        0x5
 640 #define TAG_RAISE       0x6
 641 #define TAG_THROW       0x7
 642 #define TAG_FATAL       0x8
 643 #define TAG_MASK        0xf
 644
 645     switch (state) {
 646     case TAG_RETURN:
 647         EMSG(_("E267: unexpected return"));
 648         break;
 649     case TAG_NEXT:
 650         EMSG(_("E268: unexpected next"));
 651         break;
 652     case TAG_BREAK:
 653         EMSG(_("E269: unexpected break"));
 654         break;
 655     case TAG_REDO:
 656         EMSG(_("E270: unexpected redo"));
 657         break;
 658     case TAG_RETRY:
 659         EMSG(_("E271: retry outside of rescue clause"));
 660         break;
 661     case TAG_RAISE:
 662     case TAG_FATAL:
 663 #ifdef RUBY19_OR_LATER
 664         eclass = CLASS_OF(rb_errinfo());
 665         einfo = rb_obj_as_string(rb_errinfo());
 666 #else
 667         eclass = CLASS_OF(ruby_errinfo);
 668         einfo = rb_obj_as_string(ruby_errinfo);
 669 #endif
 670         if (eclass == rb_eRuntimeError && RSTRING_LEN(einfo) == 0) {
 671             EMSG(_("E272: unhandled exception"));
 672         }
 673         else {
 674             VALUE epath;
 675             char *p;
 676
 677             epath = rb_class_path(eclass);
 678             vim_snprintf(buff, BUFSIZ, "%s: %s",
 679                      RSTRING_PTR(epath), RSTRING_PTR(einfo));
 680             p = strchr(buff, '\n');
 681             if (p) *p = '\0';
 682             EMSG(buff);
 683         }
 684         break;
 685     default:
 686         vim_snprintf(buff, BUFSIZ, _("E273: unknown longjmp status %d"), state);
 687         EMSG(buff);
 688         break;
 689     }
 690 }
 691
 692 static VALUE vim_message(VALUE self UNUSED, VALUE str)
 693 {
 694     char *buff, *p;
 695
 696     str = rb_obj_as_string(str);
 697     buff = ALLOCA_N(char, RSTRING_LEN(str));
 698     strcpy(buff, RSTRING_PTR(str));
 699     p = strchr(buff, '\n');
 700     if (p) *p = '\0';
 701     MSG(buff);
 702     return Qnil;
 703 }
 704
 705 static VALUE vim_set_option(VALUE self UNUSED, VALUE str)
 706 {
 707     do_set((char_u *)StringValuePtr(str), 0);
 708     update_screen(NOT_VALID);
 709     return Qnil;
 710 }
 711
 712 static VALUE vim_command(VALUE self UNUSED, VALUE str)
 713 {
 714     do_cmdline_cmd((char_u *)StringValuePtr(str));
 715     return Qnil;
 716 }
 717
 718 #ifdef FEAT_EVAL
 719 static VALUE vim_to_ruby(typval_T *tv)
 720 {
 721     VALUE result = Qnil;
 722
 723     if (tv->v_type == VAR_STRING)
 724     {
 725         result = rb_str_new2((char *)(tv->vval.v_string == NULL
 726                                                    ? "" : tv->vval.v_string));
 727     }
 728     else if (tv->v_type == VAR_NUMBER)
 729     {
 730         result = INT2NUM(tv->vval.v_number);
 731     }
 732 # ifdef FEAT_FLOAT
 733     else if (tv->v_type == VAR_FLOAT)
 734     {
 735         result = rb_float_new(tv->vval.v_float);
 736     }
 737 # endif
 738     else if (tv->v_type == VAR_LIST)
 739     {
 740         list_T      *list = tv->vval.v_list;
 741         listitem_T  *curr;
 742
 743         result = rb_ary_new();
 744
 745         if (list != NULL)
 746         {
 747             for (curr = list->lv_first; curr != NULL; curr = curr->li_next)
 748             {
 749                 rb_ary_push(result, vim_to_ruby(&curr->li_tv));
 750             }
 751         }
 752     }
 753     else if (tv->v_type == VAR_DICT)
 754     {
 755         result = rb_hash_new();
 756
 757         if (tv->vval.v_dict != NULL)
 758         {
 759             hashtab_T   *ht = &tv->vval.v_dict->dv_hashtab;
 760             long_u      todo = ht->ht_used;
 761             hashitem_T  *hi;
 762             dictitem_T  *di;
 763
 764             for (hi = ht->ht_array; todo > 0; ++hi)
 765             {
 766                 if (!HASHITEM_EMPTY(hi))
 767                 {
 768                     --todo;
 769
 770                     di = dict_lookup(hi);
 771                     rb_hash_aset(result, rb_str_new2((char *)hi->hi_key),
 772                                                      vim_to_ruby(&di->di_tv));
 773                 }
 774             }
 775         }
 776     } /* else return Qnil; */
 777
 778     return result;
 779 }
 780 #endif
 781
 782 static VALUE vim_evaluate(VALUE self UNUSED, VALUE str)
 783 {
 784 #ifdef FEAT_EVAL
 785     typval_T    *tv;
 786     VALUE       result;
 787
 788     tv = eval_expr((char_u *)StringValuePtr(str), NULL);
 789     if (tv == NULL)
 790     {
 791         return Qnil;
 792     }
 793     result = vim_to_ruby(tv);
 794
 795     free_tv(tv);
 796
 797     return result;
 798 #else
 799     return Qnil;
 800 #endif
 801 }
 802
 803 static VALUE buffer_new(buf_T *buf)
 804 {
 805     if (buf->b_ruby_ref)
 806     {
 807         return (VALUE) buf->b_ruby_ref;
 808     }
 809     else
 810     {
 811         VALUE obj = Data_Wrap_Struct(cBuffer, 0, 0, buf);
 812         buf->b_ruby_ref = (void *) obj;
 813         rb_hash_aset(objtbl, rb_obj_id(obj), obj);
 814         return obj;
 815     }
 816 }
 817
 818 static buf_T *get_buf(VALUE obj)
 819 {
 820     buf_T *buf;
 821
 822     Data_Get_Struct(obj, buf_T, buf);
 823     if (buf == NULL)
 824         rb_raise(eDeletedBufferError, "attempt to refer to deleted buffer");
 825     return buf;
 826 }
 827
 828 static VALUE buffer_s_current()
 829 {
 830     return buffer_new(curbuf);
 831 }
 832
 833 static VALUE buffer_s_count()
 834 {
 835     buf_T *b;
 836     int n = 0;
 837
 838     for (b = firstbuf; b != NULL; b = b->b_next)
 839     {
 840         /*  Deleted buffers should not be counted
 841          *    SegPhault - 01/07/05 */
 842         if (b->b_p_bl)
 843             n++;
 844     }
 845
 846     return INT2NUM(n);
 847 }
 848
 849 static VALUE buffer_s_aref(VALUE self UNUSED, VALUE num)
 850 {
 851     buf_T *b;
 852     int n = NUM2INT(num);
 853
 854     for (b = firstbuf; b != NULL; b = b->b_next)
 855     {
 856         /*  Deleted buffers should not be counted
 857          *    SegPhault - 01/07/05 */
 858         if (!b->b_p_bl)
 859             continue;
 860
 861         if (n == 0)
 862             return buffer_new(b);
 863
 864         n--;
 865     }
 866     return Qnil;
 867 }
 868
 869 static VALUE buffer_name(VALUE self)
 870 {
 871     buf_T *buf = get_buf(self);
 872
 873     return buf->b_ffname ? rb_str_new2((char *)buf->b_ffname) : Qnil;
 874 }
 875
 876 static VALUE buffer_number(VALUE self)
 877 {
 878     buf_T *buf = get_buf(self);
 879
 880     return INT2NUM(buf->b_fnum);
 881 }
 882
 883 static VALUE buffer_count(VALUE self)
 884 {
 885     buf_T *buf = get_buf(self);
 886
 887     return INT2NUM(buf->b_ml.ml_line_count);
 888 }
 889
 890 static VALUE get_buffer_line(buf_T *buf, linenr_T n)
 891 {
 892     if (n > 0 && n <= buf->b_ml.ml_line_count)
 893     {
 894         char *line = (char *)ml_get_buf(buf, n, FALSE);
 895         return line ? vim_str2rb_enc_str(line) : Qnil;
 896     }
 897     rb_raise(rb_eIndexError, "line number %ld out of range", (long)n);
 898 #ifndef __GNUC__
 899     return Qnil; /* For stop warning */
 900 #endif
 901 }
 902
 903 static VALUE buffer_aref(VALUE self, VALUE num)
 904 {
 905     buf_T *buf = get_buf(self);
 906
 907     if (buf != NULL)
 908         return get_buffer_line(buf, (linenr_T)NUM2LONG(num));
 909     return Qnil; /* For stop warning */
 910 }
 911
 912 static VALUE set_buffer_line(buf_T *buf, linenr_T n, VALUE str)
 913 {
 914     char        *line = StringValuePtr(str);
 915     aco_save_T  aco;
 916
 917     if (n > 0 && n <= buf->b_ml.ml_line_count && line != NULL)
 918     {
 919         /* set curwin/curbuf for "buf" and save some things */
 920         aucmd_prepbuf(&aco, buf);
 921
 922         if (u_savesub(n) == OK) {
 923             ml_replace(n, (char_u *)line, TRUE);
 924             changed();
 925 #ifdef SYNTAX_HL
 926             syn_changed(n); /* recompute syntax hl. for this line */
 927 #endif
 928         }
 929
 930         /* restore curwin/curbuf and a few other things */
 931         aucmd_restbuf(&aco);
 932         /* Careful: autocommands may have made "buf" invalid! */
 933
 934         update_curbuf(NOT_VALID);
 935     }
 936     else
 937     {
 938         rb_raise(rb_eIndexError, "line number %ld out of range", (long)n);
 939 #ifndef __GNUC__
 940         return Qnil; /* For stop warning */
 941 #endif
 942     }
 943     return str;
 944 }
 945
 946 static VALUE buffer_aset(VALUE self, VALUE num, VALUE str)
 947 {
 948     buf_T *buf = get_buf(self);
 949
 950     if (buf != NULL)
 951         return set_buffer_line(buf, (linenr_T)NUM2LONG(num), str);
 952     return str;
 953 }
 954
 955 static VALUE buffer_delete(VALUE self, VALUE num)
 956 {
 957     buf_T       *buf = get_buf(self);
 958     long        n = NUM2LONG(num);
 959     aco_save_T  aco;
 960
 961     if (n > 0 && n <= buf->b_ml.ml_line_count)
 962     {
 963         /* set curwin/curbuf for "buf" and save some things */
 964         aucmd_prepbuf(&aco, buf);
 965
 966         if (u_savedel(n, 1) == OK) {
 967             ml_delete(n, 0);
 968
 969             /* Changes to non-active buffers should properly refresh
 970              *   SegPhault - 01/09/05 */
 971             deleted_lines_mark(n, 1L);
 972
 973             changed();
 974         }
 975
 976         /* restore curwin/curbuf and a few other things */
 977         aucmd_restbuf(&aco);
 978         /* Careful: autocommands may have made "buf" invalid! */
 979
 980         update_curbuf(NOT_VALID);
 981     }
 982     else
 983     {
 984         rb_raise(rb_eIndexError, "line number %ld out of range", n);
 985     }
 986     return Qnil;
 987 }
 988
 989 static VALUE buffer_append(VALUE self, VALUE num, VALUE str)
 990 {
 991     buf_T       *buf = get_buf(self);
 992     char        *line = StringValuePtr(str);
 993     long        n = NUM2LONG(num);
 994     aco_save_T  aco;
 995
 996     if (line == NULL) {
 997         rb_raise(rb_eIndexError, "NULL line");
 998     }
 999     else if (n >= 0 && n <= buf->b_ml.ml_line_count)
1000     {
1001         /* set curwin/curbuf for "buf" and save some things */
1002         aucmd_prepbuf(&aco, buf);
1003
1004         if (u_inssub(n + 1) == OK) {
1005             ml_append(n, (char_u *) line, (colnr_T) 0, FALSE);
1006
1007             /*  Changes to non-active buffers should properly refresh screen
1008              *    SegPhault - 12/20/04 */
1009             appended_lines_mark(n, 1L);
1010
1011             changed();
1012         }
1013
1014         /* restore curwin/curbuf and a few other things */
1015         aucmd_restbuf(&aco);
1016         /* Careful: autocommands may have made "buf" invalid! */
1017
1018         update_curbuf(NOT_VALID);
1019     }
1020     else {
1021         rb_raise(rb_eIndexError, "line number %ld out of range", n);
1022     }
1023     return str;
1024 }
1025
1026 static VALUE window_new(win_T *win)
1027 {
1028     if (win->w_ruby_ref)
1029     {
1030         return (VALUE) win->w_ruby_ref;
1031     }
1032     else
1033     {
1034         VALUE obj = Data_Wrap_Struct(cVimWindow, 0, 0, win);
1035         win->w_ruby_ref = (void *) obj;
1036         rb_hash_aset(objtbl, rb_obj_id(obj), obj);
1037         return obj;
1038     }
1039 }
1040
1041 static win_T *get_win(VALUE obj)
1042 {
1043     win_T *win;
1044
1045     Data_Get_Struct(obj, win_T, win);
1046     if (win == NULL)
1047         rb_raise(eDeletedWindowError, "attempt to refer to deleted window");
1048     return win;
1049 }
1050
1051 static VALUE window_s_current()
1052 {
1053     return window_new(curwin);
1054 }
1055
1056 /*
1057  * Added line manipulation functions
1058  *    SegPhault - 03/07/05
1059  */
1060 static VALUE line_s_current()
1061 {
1062     return get_buffer_line(curbuf, curwin->w_cursor.lnum);
1063 }
1064
1065 static VALUE set_current_line(VALUE self UNUSED, VALUE str)
1066 {
1067     return set_buffer_line(curbuf, curwin->w_cursor.lnum, str);
1068 }
1069
1070 static VALUE current_line_number()
1071 {
1072     return INT2FIX((int)curwin->w_cursor.lnum);
1073 }
1074
1075
1076
1077 static VALUE window_s_count()
1078 {
1079 #ifdef FEAT_WINDOWS
1080     win_T       *w;
1081     int n = 0;
1082
1083     for (w = firstwin; w != NULL; w = w->w_next)
1084         n++;
1085     return INT2NUM(n);
1086 #else
1087     return INT2NUM(1);
1088 #endif
1089 }
1090
1091 static VALUE window_s_aref(VALUE self UNUSED, VALUE num)
1092 {
1093     win_T *w;
1094     int n = NUM2INT(num);
1095
1096 #ifndef FEAT_WINDOWS
1097     w = curwin;
1098 #else
1099     for (w = firstwin; w != NULL; w = w->w_next, --n)
1100 #endif
1101         if (n == 0)
1102             return window_new(w);
1103     return Qnil;
1104 }
1105
1106 static VALUE window_buffer(VALUE self)
1107 {
1108     win_T *win = get_win(self);
1109
1110     return buffer_new(win->w_buffer);
1111 }
1112
1113 static VALUE window_height(VALUE self)
1114 {
1115     win_T *win = get_win(self);
1116
1117     return INT2NUM(win->w_height);
1118 }
1119
1120 static VALUE window_set_height(VALUE self, VALUE height)
1121 {
1122     win_T *win = get_win(self);
1123     win_T *savewin = curwin;
1124
1125     curwin = win;
1126     win_setheight(NUM2INT(height));
1127     curwin = savewin;
1128     return height;
1129 }
1130
1131 static VALUE window_width(VALUE self)
1132 {
1133     win_T *win = get_win(self);
1134
1135     return INT2NUM(win->w_width);
1136 }
1137
1138 static VALUE window_set_width(VALUE self, VALUE width)
1139 {
1140     win_T *win = get_win(self);
1141     win_T *savewin = curwin;
1142
1143     curwin = win;
1144     win_setwidth(NUM2INT(width));
1145     curwin = savewin;
1146     return width;
1147 }
1148
1149 static VALUE window_cursor(VALUE self)
1150 {
1151     win_T *win = get_win(self);
1152
1153     return rb_assoc_new(INT2NUM(win->w_cursor.lnum), INT2NUM(win->w_cursor.col));
1154 }
1155
1156 static VALUE window_set_cursor(VALUE self, VALUE pos)
1157 {
1158     VALUE lnum, col;
1159     win_T *win = get_win(self);
1160
1161     Check_Type(pos, T_ARRAY);
1162     if (RARRAY_LEN(pos) != 2)
1163         rb_raise(rb_eArgError, "array length must be 2");
1164     lnum = RARRAY_PTR(pos)[0];
1165     col = RARRAY_PTR(pos)[1];
1166     win->w_cursor.lnum = NUM2LONG(lnum);
1167     win->w_cursor.col = NUM2UINT(col);
1168     check_cursor();                 /* put cursor on an existing line */
1169     update_screen(NOT_VALID);
1170     return Qnil;
1171 }
1172
1173 static VALUE f_p(int argc, VALUE *argv, VALUE self UNUSED)
1174 {
1175     int i;
1176     VALUE str = rb_str_new("", 0);
1177
1178     for (i = 0; i < argc; i++) {
1179         if (i > 0) rb_str_cat(str, ", ", 2);
1180         rb_str_concat(str, rb_inspect(argv[i]));
1181     }
1182     MSG(RSTRING_PTR(str));
1183     return Qnil;
1184 }
1185
1186 static void ruby_io_init(void)
1187 {
1188 #ifndef DYNAMIC_RUBY
1189     RUBYEXTERN VALUE rb_stdout;
1190 #endif
1191
1192     rb_stdout = rb_obj_alloc(rb_cObject);
1193     rb_define_singleton_method(rb_stdout, "write", vim_message, 1);
1194     rb_define_global_function("p", f_p, -1);
1195 }
1196
1197 static void ruby_vim_init(void)
1198 {
1199     objtbl = rb_hash_new();
1200     rb_global_variable(&objtbl);
1201
1202     /* The Vim module used to be called "VIM", but "Vim" is better.  Make an
1203      * alias "VIM" for backwards compatiblity. */
1204     mVIM = rb_define_module("Vim");
1205     rb_define_const(rb_cObject, "VIM", mVIM);
1206     rb_define_const(mVIM, "VERSION_MAJOR", INT2NUM(VIM_VERSION_MAJOR));
1207     rb_define_const(mVIM, "VERSION_MINOR", INT2NUM(VIM_VERSION_MINOR));
1208     rb_define_const(mVIM, "VERSION_BUILD", INT2NUM(VIM_VERSION_BUILD));
1209     rb_define_const(mVIM, "VERSION_PATCHLEVEL", INT2NUM(VIM_VERSION_PATCHLEVEL));
1210     rb_define_const(mVIM, "VERSION_SHORT", rb_str_new2(VIM_VERSION_SHORT));
1211     rb_define_const(mVIM, "VERSION_MEDIUM", rb_str_new2(VIM_VERSION_MEDIUM));
1212     rb_define_const(mVIM, "VERSION_LONG", rb_str_new2(VIM_VERSION_LONG));
1213     rb_define_const(mVIM, "VERSION_LONG_DATE", rb_str_new2(VIM_VERSION_LONG_DATE));
1214     rb_define_module_function(mVIM, "message", vim_message, 1);
1215     rb_define_module_function(mVIM, "set_option", vim_set_option, 1);
1216     rb_define_module_function(mVIM, "command", vim_command, 1);
1217     rb_define_module_function(mVIM, "evaluate", vim_evaluate, 1);
1218
1219     eDeletedBufferError = rb_define_class_under(mVIM, "DeletedBufferError",
1220                                                 rb_eStandardError);
1221     eDeletedWindowError = rb_define_class_under(mVIM, "DeletedWindowError",
1222                                                 rb_eStandardError);
1223
1224     cBuffer = rb_define_class_under(mVIM, "Buffer", rb_cObject);
1225     rb_define_singleton_method(cBuffer, "current", buffer_s_current, 0);
1226     rb_define_singleton_method(cBuffer, "count", buffer_s_count, 0);
1227     rb_define_singleton_method(cBuffer, "[]", buffer_s_aref, 1);
1228     rb_define_method(cBuffer, "name", buffer_name, 0);
1229     rb_define_method(cBuffer, "number", buffer_number, 0);
1230     rb_define_method(cBuffer, "count", buffer_count, 0);
1231     rb_define_method(cBuffer, "length", buffer_count, 0);
1232     rb_define_method(cBuffer, "[]", buffer_aref, 1);
1233     rb_define_method(cBuffer, "[]=", buffer_aset, 2);
1234     rb_define_method(cBuffer, "delete", buffer_delete, 1);
1235     rb_define_method(cBuffer, "append", buffer_append, 2);
1236
1237     /* Added line manipulation functions
1238      *   SegPhault - 03/07/05 */
1239     rb_define_method(cBuffer, "line_number", current_line_number, 0);
1240     rb_define_method(cBuffer, "line", line_s_current, 0);
1241     rb_define_method(cBuffer, "line=", set_current_line, 1);
1242
1243
1244     cVimWindow = rb_define_class_under(mVIM, "Window", rb_cObject);
1245     rb_define_singleton_method(cVimWindow, "current", window_s_current, 0);
1246     rb_define_singleton_method(cVimWindow, "count", window_s_count, 0);
1247     rb_define_singleton_method(cVimWindow, "[]", window_s_aref, 1);
1248     rb_define_method(cVimWindow, "buffer", window_buffer, 0);
1249     rb_define_method(cVimWindow, "height", window_height, 0);
1250     rb_define_method(cVimWindow, "height=", window_set_height, 1);
1251     rb_define_method(cVimWindow, "width", window_width, 0);
1252     rb_define_method(cVimWindow, "width=", window_set_width, 1);
1253     rb_define_method(cVimWindow, "cursor", window_cursor, 0);
1254     rb_define_method(cVimWindow, "cursor=", window_set_cursor, 1);
1255
1256     rb_define_virtual_variable("$curbuf", buffer_s_current, 0);
1257     rb_define_virtual_variable("$curwin", window_s_current, 0);
1258 }