xref: /vim-8.2.3635/src/if_ruby.c (revision 57e4ee4d) 
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  *   with improvements by Jon Maken
8  *
9  * Do ":help uganda"  in Vim to read copying and usage conditions.
10  * Do ":help credits" in Vim to see a list of people who contributed.
11  * See README.txt for an overview of the Vim source code.
12  */
13 
14 #ifdef HAVE_CONFIG_H
15 # include "auto/config.h"
16 #endif
17 
18 #include <stdio.h>
19 #include <string.h>
20 
21 #ifdef _WIN32
22 # if !defined(DYNAMIC_RUBY_VER) || (DYNAMIC_RUBY_VER < 18)
23 #   define NT
24 # endif
25 # ifndef DYNAMIC_RUBY
26 #  define IMPORT /* For static dll usage __declspec(dllimport) */
27 #  define RUBYEXTERN __declspec(dllimport)
28 # endif
29 #endif
30 #ifndef RUBYEXTERN
31 # define RUBYEXTERN extern
32 #endif
33 
34 #ifdef DYNAMIC_RUBY
35 /*
36  * This is tricky.  In ruby.h there is (inline) function rb_class_of()
37  * definition.  This function use these variables.  But we want function to
38  * use dll_* variables.
39  */
40 # define rb_cFalseClass		(*dll_rb_cFalseClass)
41 # define rb_cFixnum		(*dll_rb_cFixnum)
42 # define rb_cNilClass		(*dll_rb_cNilClass)
43 # define rb_cSymbol		(*dll_rb_cSymbol)
44 # define rb_cTrueClass		(*dll_rb_cTrueClass)
45 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
46 /*
47  * On ver 1.8, all Ruby functions are exported with "__declspec(dllimport)"
48  * in ruby.h.  But it causes trouble for these variables, because it is
49  * defined in this file.  When defined this RUBY_EXPORT it modified to
50  * "extern" and be able to avoid this problem.
51  */
52 #  define RUBY_EXPORT
53 # endif
54 
55 #if !(defined(WIN32) || defined(_WIN64))
56 # include <dlfcn.h>
57 # define HINSTANCE void*
58 # define RUBY_PROC void*
59 # define load_dll(n) dlopen((n), RTLD_LAZY|RTLD_GLOBAL)
60 # define symbol_from_dll dlsym
61 # define close_dll dlclose
62 #else
63 # define RUBY_PROC FARPROC
64 # define load_dll vimLoadLib
65 # define symbol_from_dll GetProcAddress
66 # define close_dll FreeLibrary
67 #endif
68 
69 #endif  /* ifdef DYNAMIC_RUBY */
70 
71 /* suggested by Ariya Mizutani */
72 #if (_MSC_VER == 1200)
73 # undef _WIN32_WINNT
74 #endif
75 
76 #if (defined(RUBY_VERSION) && RUBY_VERSION >= 19) \
77     || (defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 19)
78 # define RUBY19_OR_LATER 1
79 #endif
80 
81 #if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 19
82 /* Ruby 1.9 defines a number of static functions which use rb_num2long and
83  * rb_int2big */
84 # define rb_num2long rb_num2long_stub
85 # define rb_int2big rb_int2big_stub
86 #endif
87 
88 #include <ruby.h>
89 #ifdef RUBY19_OR_LATER
90 # include <ruby/encoding.h>
91 #endif
92 
93 #undef off_t	/* ruby defines off_t as _int64, Mingw uses long */
94 #undef EXTERN
95 #undef _
96 
97 /* T_DATA defined both by Ruby and Mac header files, hack around it... */
98 #if defined(MACOS_X_UNIX) || defined(macintosh)
99 # define __OPENTRANSPORT__
100 # define __OPENTRANSPORTPROTOCOL__
101 # define __OPENTRANSPORTPROVIDERS__
102 #endif
103 
104 /*
105  * Backward compatiblity for Ruby 1.8 and earlier.
106  * Ruby 1.9 does not provide STR2CSTR, instead StringValuePtr is provided.
107  * Ruby 1.9 does not provide RXXX(s)->len and RXXX(s)->ptr, instead
108  * RXXX_LEN(s) and RXXX_PTR(s) are provided.
109  */
110 #ifndef StringValuePtr
111 # define StringValuePtr(s) STR2CSTR(s)
112 #endif
113 #ifndef RARRAY_LEN
114 # define RARRAY_LEN(s) RARRAY(s)->len
115 #endif
116 #ifndef RARRAY_PTR
117 # define RARRAY_PTR(s) RARRAY(s)->ptr
118 #endif
119 #ifndef RSTRING_LEN
120 # define RSTRING_LEN(s) RSTRING(s)->len
121 #endif
122 #ifndef RSTRING_PTR
123 # define RSTRING_PTR(s) RSTRING(s)->ptr
124 #endif
125 
126 #include "vim.h"
127 #include "version.h"
128 
129 #if defined(PROTO) && !defined(FEAT_RUBY)
130 /* Define these to be able to generate the function prototypes. */
131 # define VALUE int
132 # define RUBY_DATA_FUNC int
133 #endif
134 
135 static int ruby_initialized = 0;
136 static VALUE objtbl;
137 
138 static VALUE mVIM;
139 static VALUE cBuffer;
140 static VALUE cVimWindow;
141 static VALUE eDeletedBufferError;
142 static VALUE eDeletedWindowError;
143 
144 static int ensure_ruby_initialized(void);
145 static void error_print(int);
146 static void ruby_io_init(void);
147 static void ruby_vim_init(void);
148 
149 #if defined(DYNAMIC_RUBY) || defined(PROTO)
150 #ifdef PROTO
151 # define HINSTANCE int		/* for generating prototypes */
152 #endif
153 
154 /*
155  * Wrapper defines
156  */
157 #define rb_assoc_new			dll_rb_assoc_new
158 #define rb_cObject			(*dll_rb_cObject)
159 #define rb_check_type			dll_rb_check_type
160 #define rb_class_path			dll_rb_class_path
161 #define rb_data_object_alloc		dll_rb_data_object_alloc
162 #define rb_define_class_under		dll_rb_define_class_under
163 #define rb_define_const			dll_rb_define_const
164 #define rb_define_global_function	dll_rb_define_global_function
165 #define rb_define_method		dll_rb_define_method
166 #define rb_define_module		dll_rb_define_module
167 #define rb_define_module_function	dll_rb_define_module_function
168 #define rb_define_singleton_method	dll_rb_define_singleton_method
169 #define rb_define_virtual_variable	dll_rb_define_virtual_variable
170 #define rb_stdout			(*dll_rb_stdout)
171 #define rb_eArgError			(*dll_rb_eArgError)
172 #define rb_eIndexError			(*dll_rb_eIndexError)
173 #define rb_eRuntimeError		(*dll_rb_eRuntimeError)
174 #define rb_eStandardError		(*dll_rb_eStandardError)
175 #define rb_eval_string_protect		dll_rb_eval_string_protect
176 #define rb_global_variable		dll_rb_global_variable
177 #define rb_hash_aset			dll_rb_hash_aset
178 #define rb_hash_new			dll_rb_hash_new
179 #define rb_inspect			dll_rb_inspect
180 #define rb_int2inum			dll_rb_int2inum
181 #if SIZEOF_INT < SIZEOF_LONG /* 64 bits only */
182 #define rb_fix2int			dll_rb_fix2int
183 #define rb_num2int			dll_rb_num2int
184 #define rb_num2uint			dll_rb_num2uint
185 #endif
186 #define rb_lastline_get			dll_rb_lastline_get
187 #define rb_lastline_set			dll_rb_lastline_set
188 #define rb_load_protect			dll_rb_load_protect
189 #ifndef RUBY19_OR_LATER
190 #define rb_num2long			dll_rb_num2long
191 #endif
192 #define rb_num2ulong			dll_rb_num2ulong
193 #define rb_obj_alloc			dll_rb_obj_alloc
194 #define rb_obj_as_string		dll_rb_obj_as_string
195 #define rb_obj_id			dll_rb_obj_id
196 #define rb_raise			dll_rb_raise
197 #define rb_str_cat			dll_rb_str_cat
198 #define rb_str_concat			dll_rb_str_concat
199 #define rb_str_new			dll_rb_str_new
200 #ifdef rb_str_new2
201 /* Ruby may #define rb_str_new2 to use rb_str_new_cstr. */
202 # define need_rb_str_new_cstr 1
203 /* Ruby's headers #define rb_str_new_cstr to make use of GCC's
204  * __builtin_constant_p extension. */
205 # undef rb_str_new_cstr
206 # define rb_str_new_cstr		dll_rb_str_new_cstr
207 #else
208 # define rb_str_new2			dll_rb_str_new2
209 #endif
210 #if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
211 # define rb_string_value		dll_rb_string_value
212 # define rb_string_value_ptr		dll_rb_string_value_ptr
213 # define rb_float_new			dll_rb_float_new
214 # define rb_ary_new			dll_rb_ary_new
215 # define rb_ary_push			dll_rb_ary_push
216 #else
217 # define rb_str2cstr			dll_rb_str2cstr
218 #endif
219 #ifdef RUBY19_OR_LATER
220 # define rb_errinfo			dll_rb_errinfo
221 #else
222 # define ruby_errinfo			(*dll_ruby_errinfo)
223 #endif
224 #define ruby_init			dll_ruby_init
225 #define ruby_init_loadpath		dll_ruby_init_loadpath
226 #ifdef WIN3264
227 # define NtInitialize			dll_NtInitialize
228 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
229 #  define rb_w32_snprintf		dll_rb_w32_snprintf
230 # endif
231 #endif
232 
233 #ifdef RUBY19_OR_LATER
234 # define ruby_script			dll_ruby_script
235 # define rb_enc_find_index		dll_rb_enc_find_index
236 # define rb_enc_find			dll_rb_enc_find
237 # define rb_enc_str_new			dll_rb_enc_str_new
238 # define rb_sprintf			dll_rb_sprintf
239 # define rb_require			dll_rb_require
240 # define ruby_init_stack		dll_ruby_init_stack
241 # define ruby_process_options		dll_ruby_process_options
242 #endif
243 
244 /*
245  * Pointers for dynamic link
246  */
247 static VALUE (*dll_rb_assoc_new) (VALUE, VALUE);
248 VALUE *dll_rb_cFalseClass;
249 VALUE *dll_rb_cFixnum;
250 VALUE *dll_rb_cNilClass;
251 static VALUE *dll_rb_cObject;
252 VALUE *dll_rb_cSymbol;
253 VALUE *dll_rb_cTrueClass;
254 static void (*dll_rb_check_type) (VALUE,int);
255 static VALUE (*dll_rb_class_path) (VALUE);
256 static VALUE (*dll_rb_data_object_alloc) (VALUE, void*, RUBY_DATA_FUNC, RUBY_DATA_FUNC);
257 static VALUE (*dll_rb_define_class_under) (VALUE, const char*, VALUE);
258 static void (*dll_rb_define_const) (VALUE,const char*,VALUE);
259 static void (*dll_rb_define_global_function) (const char*,VALUE(*)(),int);
260 static void (*dll_rb_define_method) (VALUE,const char*,VALUE(*)(),int);
261 static VALUE (*dll_rb_define_module) (const char*);
262 static void (*dll_rb_define_module_function) (VALUE,const char*,VALUE(*)(),int);
263 static void (*dll_rb_define_singleton_method) (VALUE,const char*,VALUE(*)(),int);
264 static void (*dll_rb_define_virtual_variable) (const char*,VALUE(*)(),void(*)());
265 static VALUE *dll_rb_stdout;
266 static VALUE *dll_rb_eArgError;
267 static VALUE *dll_rb_eIndexError;
268 static VALUE *dll_rb_eRuntimeError;
269 static VALUE *dll_rb_eStandardError;
270 static VALUE (*dll_rb_eval_string_protect) (const char*, int*);
271 static void (*dll_rb_global_variable) (VALUE*);
272 static VALUE (*dll_rb_hash_aset) (VALUE, VALUE, VALUE);
273 static VALUE (*dll_rb_hash_new) (void);
274 static VALUE (*dll_rb_inspect) (VALUE);
275 static VALUE (*dll_rb_int2inum) (long);
276 #if SIZEOF_INT < SIZEOF_LONG /* 64 bits only */
277 static long (*dll_rb_fix2int) (VALUE);
278 static long (*dll_rb_num2int) (VALUE);
279 static unsigned long (*dll_rb_num2uint) (VALUE);
280 #endif
281 static VALUE (*dll_rb_lastline_get) (void);
282 static void (*dll_rb_lastline_set) (VALUE);
283 static void (*dll_rb_load_protect) (VALUE, int, int*);
284 static long (*dll_rb_num2long) (VALUE);
285 static unsigned long (*dll_rb_num2ulong) (VALUE);
286 static VALUE (*dll_rb_obj_alloc) (VALUE);
287 static VALUE (*dll_rb_obj_as_string) (VALUE);
288 static VALUE (*dll_rb_obj_id) (VALUE);
289 static void (*dll_rb_raise) (VALUE, const char*, ...);
290 #if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
291 static VALUE (*dll_rb_string_value) (volatile VALUE*);
292 #else
293 static char *(*dll_rb_str2cstr) (VALUE,int*);
294 #endif
295 static VALUE (*dll_rb_str_cat) (VALUE, const char*, long);
296 static VALUE (*dll_rb_str_concat) (VALUE, VALUE);
297 static VALUE (*dll_rb_str_new) (const char*, long);
298 #ifdef need_rb_str_new_cstr
299 /* Ruby may #define rb_str_new2 to use rb_str_new_cstr. */
300 static VALUE (*dll_rb_str_new_cstr) (const char*);
301 #else
302 static VALUE (*dll_rb_str_new2) (const char*);
303 #endif
304 #ifdef RUBY19_OR_LATER
305 static VALUE (*dll_rb_errinfo) (void);
306 #else
307 static VALUE *dll_ruby_errinfo;
308 #endif
309 static void (*dll_ruby_init) (void);
310 static void (*dll_ruby_init_loadpath) (void);
311 #ifdef WIN3264
312 static void (*dll_NtInitialize) (int*, char***);
313 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
314 static int (*dll_rb_w32_snprintf)(char*, size_t, const char*, ...);
315 # endif
316 #endif
317 #if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
318 static char * (*dll_rb_string_value_ptr) (volatile VALUE*);
319 static VALUE (*dll_rb_float_new) (double);
320 static VALUE (*dll_rb_ary_new) (void);
321 static VALUE (*dll_rb_ary_push) (VALUE, VALUE);
322 #endif
323 #ifdef RUBY19_OR_LATER
324 static VALUE (*dll_rb_int2big)(SIGNED_VALUE);
325 #endif
326 
327 #ifdef RUBY19_OR_LATER
328 static void (*dll_ruby_script) (const char*);
329 static int (*dll_rb_enc_find_index) (const char*);
330 static rb_encoding* (*dll_rb_enc_find) (const char*);
331 static VALUE (*dll_rb_enc_str_new) (const char*, long, rb_encoding*);
332 static VALUE (*dll_rb_sprintf) (const char*, ...);
333 static VALUE (*dll_rb_require) (const char*);
334 static void (*ruby_init_stack)(VALUE*);
335 static void* (*ruby_process_options)(int, char**);
336 #endif
337 
338 #if defined(RUBY19_OR_LATER) && !defined(PROTO)
339 SIGNED_VALUE rb_num2long_stub(VALUE x)
340 {
341     return dll_rb_num2long(x);
342 }
343 VALUE rb_int2big_stub(SIGNED_VALUE x)
344 {
345     return dll_rb_int2big(x);
346 }
347 #endif
348 
349 static HINSTANCE hinstRuby = NULL; /* Instance of ruby.dll */
350 
351 /*
352  * Table of name to function pointer of ruby.
353  */
354 static struct
355 {
356     char *name;
357     RUBY_PROC *ptr;
358 } ruby_funcname_table[] =
359 {
360     {"rb_assoc_new", (RUBY_PROC*)&dll_rb_assoc_new},
361     {"rb_cFalseClass", (RUBY_PROC*)&dll_rb_cFalseClass},
362     {"rb_cFixnum", (RUBY_PROC*)&dll_rb_cFixnum},
363     {"rb_cNilClass", (RUBY_PROC*)&dll_rb_cNilClass},
364     {"rb_cObject", (RUBY_PROC*)&dll_rb_cObject},
365     {"rb_cSymbol", (RUBY_PROC*)&dll_rb_cSymbol},
366     {"rb_cTrueClass", (RUBY_PROC*)&dll_rb_cTrueClass},
367     {"rb_check_type", (RUBY_PROC*)&dll_rb_check_type},
368     {"rb_class_path", (RUBY_PROC*)&dll_rb_class_path},
369     {"rb_data_object_alloc", (RUBY_PROC*)&dll_rb_data_object_alloc},
370     {"rb_define_class_under", (RUBY_PROC*)&dll_rb_define_class_under},
371     {"rb_define_const", (RUBY_PROC*)&dll_rb_define_const},
372     {"rb_define_global_function", (RUBY_PROC*)&dll_rb_define_global_function},
373     {"rb_define_method", (RUBY_PROC*)&dll_rb_define_method},
374     {"rb_define_module", (RUBY_PROC*)&dll_rb_define_module},
375     {"rb_define_module_function", (RUBY_PROC*)&dll_rb_define_module_function},
376     {"rb_define_singleton_method", (RUBY_PROC*)&dll_rb_define_singleton_method},
377     {"rb_define_virtual_variable", (RUBY_PROC*)&dll_rb_define_virtual_variable},
378     {"rb_stdout", (RUBY_PROC*)&dll_rb_stdout},
379     {"rb_eArgError", (RUBY_PROC*)&dll_rb_eArgError},
380     {"rb_eIndexError", (RUBY_PROC*)&dll_rb_eIndexError},
381     {"rb_eRuntimeError", (RUBY_PROC*)&dll_rb_eRuntimeError},
382     {"rb_eStandardError", (RUBY_PROC*)&dll_rb_eStandardError},
383     {"rb_eval_string_protect", (RUBY_PROC*)&dll_rb_eval_string_protect},
384     {"rb_global_variable", (RUBY_PROC*)&dll_rb_global_variable},
385     {"rb_hash_aset", (RUBY_PROC*)&dll_rb_hash_aset},
386     {"rb_hash_new", (RUBY_PROC*)&dll_rb_hash_new},
387     {"rb_inspect", (RUBY_PROC*)&dll_rb_inspect},
388     {"rb_int2inum", (RUBY_PROC*)&dll_rb_int2inum},
389 #if SIZEOF_INT < SIZEOF_LONG /* 64 bits only */
390     {"rb_fix2int", (RUBY_PROC*)&dll_rb_fix2int},
391     {"rb_num2int", (RUBY_PROC*)&dll_rb_num2int},
392     {"rb_num2uint", (RUBY_PROC*)&dll_rb_num2uint},
393 #endif
394     {"rb_lastline_get", (RUBY_PROC*)&dll_rb_lastline_get},
395     {"rb_lastline_set", (RUBY_PROC*)&dll_rb_lastline_set},
396     {"rb_load_protect", (RUBY_PROC*)&dll_rb_load_protect},
397     {"rb_num2long", (RUBY_PROC*)&dll_rb_num2long},
398     {"rb_num2ulong", (RUBY_PROC*)&dll_rb_num2ulong},
399     {"rb_obj_alloc", (RUBY_PROC*)&dll_rb_obj_alloc},
400     {"rb_obj_as_string", (RUBY_PROC*)&dll_rb_obj_as_string},
401     {"rb_obj_id", (RUBY_PROC*)&dll_rb_obj_id},
402     {"rb_raise", (RUBY_PROC*)&dll_rb_raise},
403 #if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
404     {"rb_string_value", (RUBY_PROC*)&dll_rb_string_value},
405 #else
406     {"rb_str2cstr", (RUBY_PROC*)&dll_rb_str2cstr},
407 #endif
408     {"rb_str_cat", (RUBY_PROC*)&dll_rb_str_cat},
409     {"rb_str_concat", (RUBY_PROC*)&dll_rb_str_concat},
410     {"rb_str_new", (RUBY_PROC*)&dll_rb_str_new},
411 #ifdef need_rb_str_new_cstr
412     {"rb_str_new_cstr", (RUBY_PROC*)&dll_rb_str_new_cstr},
413 #else
414     {"rb_str_new2", (RUBY_PROC*)&dll_rb_str_new2},
415 #endif
416 #ifdef RUBY19_OR_LATER
417     {"rb_errinfo", (RUBY_PROC*)&dll_rb_errinfo},
418 #else
419     {"ruby_errinfo", (RUBY_PROC*)&dll_ruby_errinfo},
420 #endif
421     {"ruby_init", (RUBY_PROC*)&dll_ruby_init},
422     {"ruby_init_loadpath", (RUBY_PROC*)&dll_ruby_init_loadpath},
423 #ifdef WIN3264
424     {
425 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER < 19
426     "NtInitialize",
427 # else
428     "ruby_sysinit",
429 # endif
430 			(RUBY_PROC*)&dll_NtInitialize},
431 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
432     {"rb_w32_snprintf", (RUBY_PROC*)&dll_rb_w32_snprintf},
433 # endif
434 #endif
435 #if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
436     {"rb_string_value_ptr", (RUBY_PROC*)&dll_rb_string_value_ptr},
437     {"rb_float_new", (RUBY_PROC*)&dll_rb_float_new},
438     {"rb_ary_new", (RUBY_PROC*)&dll_rb_ary_new},
439     {"rb_ary_push", (RUBY_PROC*)&dll_rb_ary_push},
440 #endif
441 #ifdef RUBY19_OR_LATER
442     {"rb_int2big", (RUBY_PROC*)&dll_rb_int2big},
443     {"ruby_script", (RUBY_PROC*)&dll_ruby_script},
444     {"rb_enc_find_index", (RUBY_PROC*)&dll_rb_enc_find_index},
445     {"rb_enc_find", (RUBY_PROC*)&dll_rb_enc_find},
446     {"rb_enc_str_new", (RUBY_PROC*)&dll_rb_enc_str_new},
447     {"rb_sprintf", (RUBY_PROC*)&dll_rb_sprintf},
448     {"rb_require", (RUBY_PROC*)&dll_rb_require},
449     {"ruby_init_stack", (RUBY_PROC*)&dll_ruby_init_stack},
450     {"ruby_process_options", (RUBY_PROC*)&dll_ruby_process_options},
451 #endif
452     {"", NULL},
453 };
454 
455 /*
456  * Free ruby.dll
457  */
458     static void
459 end_dynamic_ruby()
460 {
461     if (hinstRuby)
462     {
463 	close_dll(hinstRuby);
464 	hinstRuby = NULL;
465     }
466 }
467 
468 /*
469  * Load library and get all pointers.
470  * Parameter 'libname' provides name of DLL.
471  * Return OK or FAIL.
472  */
473     static int
474 ruby_runtime_link_init(char *libname, int verbose)
475 {
476     int i;
477 
478     if (hinstRuby)
479 	return OK;
480     hinstRuby = load_dll(libname);
481     if (!hinstRuby)
482     {
483 	if (verbose)
484 	    EMSG2(_(e_loadlib), libname);
485 	return FAIL;
486     }
487 
488     for (i = 0; ruby_funcname_table[i].ptr; ++i)
489     {
490 	if (!(*ruby_funcname_table[i].ptr = symbol_from_dll(hinstRuby,
491 			ruby_funcname_table[i].name)))
492 	{
493 	    close_dll(hinstRuby);
494 	    hinstRuby = NULL;
495 	    if (verbose)
496 		EMSG2(_(e_loadfunc), ruby_funcname_table[i].name);
497 	    return FAIL;
498 	}
499     }
500     return OK;
501 }
502 
503 /*
504  * If ruby is enabled (there is installed ruby on Windows system) return TRUE,
505  * else FALSE.
506  */
507     int
508 ruby_enabled(verbose)
509     int		verbose;
510 {
511     return ruby_runtime_link_init(DYNAMIC_RUBY_DLL, verbose) == OK;
512 }
513 #endif /* defined(DYNAMIC_RUBY) || defined(PROTO) */
514 
515     void
516 ruby_end()
517 {
518 #ifdef DYNAMIC_RUBY
519     end_dynamic_ruby();
520 #endif
521 }
522 
523 void ex_ruby(exarg_T *eap)
524 {
525     int state;
526     char *script = NULL;
527 
528     script = (char *)script_get(eap, eap->arg);
529     if (!eap->skip && ensure_ruby_initialized())
530     {
531 	if (script == NULL)
532 	    rb_eval_string_protect((char *)eap->arg, &state);
533 	else
534 	    rb_eval_string_protect(script, &state);
535 	if (state)
536 	    error_print(state);
537     }
538     vim_free(script);
539 }
540 
541 /*
542  *  In Ruby 1.9 or later, ruby String object has encoding.
543  *  conversion buffer string of vim to ruby String object using
544  *  VIM encoding option.
545  */
546     static VALUE
547 vim_str2rb_enc_str(const char *s)
548 {
549 #ifdef RUBY19_OR_LATER
550     int isnum;
551     long lval;
552     char_u *sval;
553     rb_encoding *enc;
554 
555     isnum = get_option_value((char_u *)"enc", &lval, &sval, 0);
556     if (isnum == 0)
557     {
558 	enc = rb_enc_find((char *)sval);
559 	vim_free(sval);
560 	if (enc) {
561 	    return rb_enc_str_new(s, strlen(s), enc);
562 	}
563     }
564 #endif
565     return rb_str_new2(s);
566 }
567 
568     static VALUE
569 eval_enc_string_protect(const char *str, int *state)
570 {
571 #ifdef RUBY19_OR_LATER
572     int isnum;
573     long lval;
574     char_u *sval;
575     rb_encoding *enc;
576     VALUE v;
577 
578     isnum = get_option_value((char_u *)"enc", &lval, &sval, 0);
579     if (isnum == 0)
580     {
581 	enc = rb_enc_find((char *)sval);
582 	vim_free(sval);
583 	if (enc)
584 	{
585 	    v = rb_sprintf("#-*- coding:%s -*-\n%s", rb_enc_name(enc), str);
586 	    return rb_eval_string_protect(StringValuePtr(v), state);
587 	}
588     }
589 #endif
590     return rb_eval_string_protect(str, state);
591 }
592 
593 void ex_rubydo(exarg_T *eap)
594 {
595     int state;
596     linenr_T i;
597 
598     if (ensure_ruby_initialized())
599     {
600 	if (u_save(eap->line1 - 1, eap->line2 + 1) != OK)
601 	    return;
602 	for (i = eap->line1; i <= eap->line2; i++) {
603 	    VALUE line;
604 
605 	    line = vim_str2rb_enc_str((char *)ml_get(i));
606 	    rb_lastline_set(line);
607 	    eval_enc_string_protect((char *) eap->arg, &state);
608 	    if (state) {
609 		error_print(state);
610 		break;
611 	    }
612 	    line = rb_lastline_get();
613 	    if (!NIL_P(line)) {
614 		if (TYPE(line) != T_STRING) {
615 		    EMSG(_("E265: $_ must be an instance of String"));
616 		    return;
617 		}
618 		ml_replace(i, (char_u *) StringValuePtr(line), 1);
619 		changed();
620 #ifdef SYNTAX_HL
621 		syn_changed(i); /* recompute syntax hl. for this line */
622 #endif
623 	    }
624 	}
625 	check_cursor();
626 	update_curbuf(NOT_VALID);
627     }
628 }
629 
630 void ex_rubyfile(exarg_T *eap)
631 {
632     int state;
633 
634     if (ensure_ruby_initialized())
635     {
636 	rb_load_protect(rb_str_new2((char *) eap->arg), 0, &state);
637 	if (state) error_print(state);
638     }
639 }
640 
641 void ruby_buffer_free(buf_T *buf)
642 {
643     if (buf->b_ruby_ref)
644     {
645 	rb_hash_aset(objtbl, rb_obj_id((VALUE) buf->b_ruby_ref), Qnil);
646 	RDATA(buf->b_ruby_ref)->data = NULL;
647     }
648 }
649 
650 void ruby_window_free(win_T *win)
651 {
652     if (win->w_ruby_ref)
653     {
654 	rb_hash_aset(objtbl, rb_obj_id((VALUE) win->w_ruby_ref), Qnil);
655 	RDATA(win->w_ruby_ref)->data = NULL;
656     }
657 }
658 
659 static int ensure_ruby_initialized(void)
660 {
661     if (!ruby_initialized)
662     {
663 #ifdef DYNAMIC_RUBY
664 	if (ruby_enabled(TRUE))
665 	{
666 #endif
667 #ifdef _WIN32
668 	    /* suggested by Ariya Mizutani */
669 	    int argc = 1;
670 	    char *argv[] = {"gvim.exe"};
671 	    NtInitialize(&argc, &argv);
672 #endif
673 	    {
674 #ifdef RUBY19_OR_LATER
675 		RUBY_INIT_STACK;
676 #endif
677 		ruby_init();
678 	    }
679 #ifdef RUBY19_OR_LATER
680 	    {
681 		int dummy_argc = 2;
682 		char *dummy_argv[] = {"vim-ruby", "-e0"};
683 		ruby_process_options(dummy_argc, dummy_argv);
684 	    }
685 	    ruby_script("vim-ruby");
686 #else
687 	    ruby_init_loadpath();
688 #endif
689 	    ruby_io_init();
690 	    ruby_vim_init();
691 	    ruby_initialized = 1;
692 #ifdef DYNAMIC_RUBY
693 	}
694 	else
695 	{
696 	    EMSG(_("E266: Sorry, this command is disabled, the Ruby library could not be loaded."));
697 	    return 0;
698 	}
699 #endif
700     }
701     return ruby_initialized;
702 }
703 
704 static void error_print(int state)
705 {
706 #ifndef DYNAMIC_RUBY
707 #if !(defined(RUBY_VERSION) && RUBY_VERSION >= 19) \
708     && !(defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 19)
709     RUBYEXTERN VALUE ruby_errinfo;
710 #endif
711 #endif
712     VALUE eclass;
713     VALUE einfo;
714     char buff[BUFSIZ];
715 
716 #define TAG_RETURN	0x1
717 #define TAG_BREAK	0x2
718 #define TAG_NEXT	0x3
719 #define TAG_RETRY	0x4
720 #define TAG_REDO	0x5
721 #define TAG_RAISE	0x6
722 #define TAG_THROW	0x7
723 #define TAG_FATAL	0x8
724 #define TAG_MASK	0xf
725 
726     switch (state) {
727     case TAG_RETURN:
728 	EMSG(_("E267: unexpected return"));
729 	break;
730     case TAG_NEXT:
731 	EMSG(_("E268: unexpected next"));
732 	break;
733     case TAG_BREAK:
734 	EMSG(_("E269: unexpected break"));
735 	break;
736     case TAG_REDO:
737 	EMSG(_("E270: unexpected redo"));
738 	break;
739     case TAG_RETRY:
740 	EMSG(_("E271: retry outside of rescue clause"));
741 	break;
742     case TAG_RAISE:
743     case TAG_FATAL:
744 #ifdef RUBY19_OR_LATER
745 	eclass = CLASS_OF(rb_errinfo());
746 	einfo = rb_obj_as_string(rb_errinfo());
747 #else
748 	eclass = CLASS_OF(ruby_errinfo);
749 	einfo = rb_obj_as_string(ruby_errinfo);
750 #endif
751 	if (eclass == rb_eRuntimeError && RSTRING_LEN(einfo) == 0) {
752 	    EMSG(_("E272: unhandled exception"));
753 	}
754 	else {
755 	    VALUE epath;
756 	    char *p;
757 
758 	    epath = rb_class_path(eclass);
759 	    vim_snprintf(buff, BUFSIZ, "%s: %s",
760 		     RSTRING_PTR(epath), RSTRING_PTR(einfo));
761 	    p = strchr(buff, '\n');
762 	    if (p) *p = '\0';
763 	    EMSG(buff);
764 	}
765 	break;
766     default:
767 	vim_snprintf(buff, BUFSIZ, _("E273: unknown longjmp status %d"), state);
768 	EMSG(buff);
769 	break;
770     }
771 }
772 
773 static VALUE vim_message(VALUE self UNUSED, VALUE str)
774 {
775     char *buff, *p;
776 
777     str = rb_obj_as_string(str);
778     if (RSTRING_LEN(str) > 0)
779     {
780 	/* Only do this when the string isn't empty, alloc(0) causes trouble. */
781 	buff = ALLOCA_N(char, RSTRING_LEN(str));
782 	strcpy(buff, RSTRING_PTR(str));
783 	p = strchr(buff, '\n');
784 	if (p) *p = '\0';
785 	MSG(buff);
786     }
787     else
788     {
789 	MSG("");
790     }
791     return Qnil;
792 }
793 
794 static VALUE vim_set_option(VALUE self UNUSED, VALUE str)
795 {
796     do_set((char_u *)StringValuePtr(str), 0);
797     update_screen(NOT_VALID);
798     return Qnil;
799 }
800 
801 static VALUE vim_command(VALUE self UNUSED, VALUE str)
802 {
803     do_cmdline_cmd((char_u *)StringValuePtr(str));
804     return Qnil;
805 }
806 
807 #ifdef FEAT_EVAL
808 static VALUE vim_to_ruby(typval_T *tv)
809 {
810     VALUE result = Qnil;
811 
812     if (tv->v_type == VAR_STRING)
813     {
814 	result = rb_str_new2(tv->vval.v_string == NULL
815 					  ? "" : (char *)(tv->vval.v_string));
816     }
817     else if (tv->v_type == VAR_NUMBER)
818     {
819 	result = INT2NUM(tv->vval.v_number);
820     }
821 # ifdef FEAT_FLOAT
822     else if (tv->v_type == VAR_FLOAT)
823     {
824 	result = rb_float_new(tv->vval.v_float);
825     }
826 # endif
827     else if (tv->v_type == VAR_LIST)
828     {
829 	list_T      *list = tv->vval.v_list;
830 	listitem_T  *curr;
831 
832 	result = rb_ary_new();
833 
834 	if (list != NULL)
835 	{
836 	    for (curr = list->lv_first; curr != NULL; curr = curr->li_next)
837 	    {
838 		rb_ary_push(result, vim_to_ruby(&curr->li_tv));
839 	    }
840 	}
841     }
842     else if (tv->v_type == VAR_DICT)
843     {
844 	result = rb_hash_new();
845 
846 	if (tv->vval.v_dict != NULL)
847 	{
848 	    hashtab_T   *ht = &tv->vval.v_dict->dv_hashtab;
849 	    long_u      todo = ht->ht_used;
850 	    hashitem_T  *hi;
851 	    dictitem_T  *di;
852 
853 	    for (hi = ht->ht_array; todo > 0; ++hi)
854 	    {
855 		if (!HASHITEM_EMPTY(hi))
856 		{
857 		    --todo;
858 
859 		    di = dict_lookup(hi);
860 		    rb_hash_aset(result, rb_str_new2((char *)hi->hi_key),
861 						     vim_to_ruby(&di->di_tv));
862 		}
863 	    }
864 	}
865     } /* else return Qnil; */
866 
867     return result;
868 }
869 #endif
870 
871 static VALUE vim_evaluate(VALUE self UNUSED, VALUE str)
872 {
873 #ifdef FEAT_EVAL
874     typval_T    *tv;
875     VALUE       result;
876 
877     tv = eval_expr((char_u *)StringValuePtr(str), NULL);
878     if (tv == NULL)
879     {
880 	return Qnil;
881     }
882     result = vim_to_ruby(tv);
883 
884     free_tv(tv);
885 
886     return result;
887 #else
888     return Qnil;
889 #endif
890 }
891 
892 static VALUE buffer_new(buf_T *buf)
893 {
894     if (buf->b_ruby_ref)
895     {
896 	return (VALUE) buf->b_ruby_ref;
897     }
898     else
899     {
900 	VALUE obj = Data_Wrap_Struct(cBuffer, 0, 0, buf);
901 	buf->b_ruby_ref = (void *) obj;
902 	rb_hash_aset(objtbl, rb_obj_id(obj), obj);
903 	return obj;
904     }
905 }
906 
907 static buf_T *get_buf(VALUE obj)
908 {
909     buf_T *buf;
910 
911     Data_Get_Struct(obj, buf_T, buf);
912     if (buf == NULL)
913 	rb_raise(eDeletedBufferError, "attempt to refer to deleted buffer");
914     return buf;
915 }
916 
917 static VALUE buffer_s_current()
918 {
919     return buffer_new(curbuf);
920 }
921 
922 static VALUE buffer_s_count()
923 {
924     buf_T *b;
925     int n = 0;
926 
927     for (b = firstbuf; b != NULL; b = b->b_next)
928     {
929 	/*  Deleted buffers should not be counted
930 	 *    SegPhault - 01/07/05 */
931 	if (b->b_p_bl)
932 	    n++;
933     }
934 
935     return INT2NUM(n);
936 }
937 
938 static VALUE buffer_s_aref(VALUE self UNUSED, VALUE num)
939 {
940     buf_T *b;
941     int n = NUM2INT(num);
942 
943     for (b = firstbuf; b != NULL; b = b->b_next)
944     {
945 	/*  Deleted buffers should not be counted
946 	 *    SegPhault - 01/07/05 */
947 	if (!b->b_p_bl)
948 	    continue;
949 
950 	if (n == 0)
951 	    return buffer_new(b);
952 
953 	n--;
954     }
955     return Qnil;
956 }
957 
958 static VALUE buffer_name(VALUE self)
959 {
960     buf_T *buf = get_buf(self);
961 
962     return buf->b_ffname ? rb_str_new2((char *)buf->b_ffname) : Qnil;
963 }
964 
965 static VALUE buffer_number(VALUE self)
966 {
967     buf_T *buf = get_buf(self);
968 
969     return INT2NUM(buf->b_fnum);
970 }
971 
972 static VALUE buffer_count(VALUE self)
973 {
974     buf_T *buf = get_buf(self);
975 
976     return INT2NUM(buf->b_ml.ml_line_count);
977 }
978 
979 static VALUE get_buffer_line(buf_T *buf, linenr_T n)
980 {
981     if (n <= 0 || n > buf->b_ml.ml_line_count)
982 	rb_raise(rb_eIndexError, "line number %ld out of range", (long)n);
983     return vim_str2rb_enc_str((char *)ml_get_buf(buf, n, FALSE));
984 }
985 
986 static VALUE buffer_aref(VALUE self, VALUE num)
987 {
988     buf_T *buf = get_buf(self);
989 
990     if (buf != NULL)
991 	return get_buffer_line(buf, (linenr_T)NUM2LONG(num));
992     return Qnil; /* For stop warning */
993 }
994 
995 static VALUE set_buffer_line(buf_T *buf, linenr_T n, VALUE str)
996 {
997     char	*line = StringValuePtr(str);
998     aco_save_T	aco;
999 
1000     if (n > 0 && n <= buf->b_ml.ml_line_count && line != NULL)
1001     {
1002 	/* set curwin/curbuf for "buf" and save some things */
1003 	aucmd_prepbuf(&aco, buf);
1004 
1005 	if (u_savesub(n) == OK) {
1006 	    ml_replace(n, (char_u *)line, TRUE);
1007 	    changed();
1008 #ifdef SYNTAX_HL
1009 	    syn_changed(n); /* recompute syntax hl. for this line */
1010 #endif
1011 	}
1012 
1013 	/* restore curwin/curbuf and a few other things */
1014 	aucmd_restbuf(&aco);
1015 	/* Careful: autocommands may have made "buf" invalid! */
1016 
1017 	update_curbuf(NOT_VALID);
1018     }
1019     else
1020     {
1021 	rb_raise(rb_eIndexError, "line number %ld out of range", (long)n);
1022     }
1023     return str;
1024 }
1025 
1026 static VALUE buffer_aset(VALUE self, VALUE num, VALUE str)
1027 {
1028     buf_T *buf = get_buf(self);
1029 
1030     if (buf != NULL)
1031 	return set_buffer_line(buf, (linenr_T)NUM2LONG(num), str);
1032     return str;
1033 }
1034 
1035 static VALUE buffer_delete(VALUE self, VALUE num)
1036 {
1037     buf_T	*buf = get_buf(self);
1038     long	n = NUM2LONG(num);
1039     aco_save_T	aco;
1040 
1041     if (n > 0 && n <= buf->b_ml.ml_line_count)
1042     {
1043 	/* set curwin/curbuf for "buf" and save some things */
1044 	aucmd_prepbuf(&aco, buf);
1045 
1046 	if (u_savedel(n, 1) == OK) {
1047 	    ml_delete(n, 0);
1048 
1049 	    /* Changes to non-active buffers should properly refresh
1050 	     *   SegPhault - 01/09/05 */
1051 	    deleted_lines_mark(n, 1L);
1052 
1053 	    changed();
1054 	}
1055 
1056 	/* restore curwin/curbuf and a few other things */
1057 	aucmd_restbuf(&aco);
1058 	/* Careful: autocommands may have made "buf" invalid! */
1059 
1060 	update_curbuf(NOT_VALID);
1061     }
1062     else
1063     {
1064 	rb_raise(rb_eIndexError, "line number %ld out of range", n);
1065     }
1066     return Qnil;
1067 }
1068 
1069 static VALUE buffer_append(VALUE self, VALUE num, VALUE str)
1070 {
1071     buf_T	*buf = get_buf(self);
1072     char	*line = StringValuePtr(str);
1073     long	n = NUM2LONG(num);
1074     aco_save_T	aco;
1075 
1076     if (line == NULL)
1077     {
1078 	rb_raise(rb_eIndexError, "NULL line");
1079     }
1080     else if (n >= 0 && n <= buf->b_ml.ml_line_count)
1081     {
1082 	/* set curwin/curbuf for "buf" and save some things */
1083 	aucmd_prepbuf(&aco, buf);
1084 
1085 	if (u_inssub(n + 1) == OK) {
1086 	    ml_append(n, (char_u *) line, (colnr_T) 0, FALSE);
1087 
1088 	    /*  Changes to non-active buffers should properly refresh screen
1089 	     *    SegPhault - 12/20/04 */
1090 	    appended_lines_mark(n, 1L);
1091 
1092 	    changed();
1093 	}
1094 
1095 	/* restore curwin/curbuf and a few other things */
1096 	aucmd_restbuf(&aco);
1097 	/* Careful: autocommands may have made "buf" invalid! */
1098 
1099 	update_curbuf(NOT_VALID);
1100     }
1101     else
1102     {
1103 	rb_raise(rb_eIndexError, "line number %ld out of range", n);
1104     }
1105     return str;
1106 }
1107 
1108 static VALUE window_new(win_T *win)
1109 {
1110     if (win->w_ruby_ref)
1111     {
1112 	return (VALUE) win->w_ruby_ref;
1113     }
1114     else
1115     {
1116 	VALUE obj = Data_Wrap_Struct(cVimWindow, 0, 0, win);
1117 	win->w_ruby_ref = (void *) obj;
1118 	rb_hash_aset(objtbl, rb_obj_id(obj), obj);
1119 	return obj;
1120     }
1121 }
1122 
1123 static win_T *get_win(VALUE obj)
1124 {
1125     win_T *win;
1126 
1127     Data_Get_Struct(obj, win_T, win);
1128     if (win == NULL)
1129 	rb_raise(eDeletedWindowError, "attempt to refer to deleted window");
1130     return win;
1131 }
1132 
1133 static VALUE window_s_current()
1134 {
1135     return window_new(curwin);
1136 }
1137 
1138 /*
1139  * Added line manipulation functions
1140  *    SegPhault - 03/07/05
1141  */
1142 static VALUE line_s_current()
1143 {
1144     return get_buffer_line(curbuf, curwin->w_cursor.lnum);
1145 }
1146 
1147 static VALUE set_current_line(VALUE self UNUSED, VALUE str)
1148 {
1149     return set_buffer_line(curbuf, curwin->w_cursor.lnum, str);
1150 }
1151 
1152 static VALUE current_line_number()
1153 {
1154     return INT2FIX((int)curwin->w_cursor.lnum);
1155 }
1156 
1157 
1158 
1159 static VALUE window_s_count()
1160 {
1161 #ifdef FEAT_WINDOWS
1162     win_T	*w;
1163     int n = 0;
1164 
1165     for (w = firstwin; w != NULL; w = w->w_next)
1166 	n++;
1167     return INT2NUM(n);
1168 #else
1169     return INT2NUM(1);
1170 #endif
1171 }
1172 
1173 static VALUE window_s_aref(VALUE self UNUSED, VALUE num)
1174 {
1175     win_T *w;
1176     int n = NUM2INT(num);
1177 
1178 #ifndef FEAT_WINDOWS
1179     w = curwin;
1180 #else
1181     for (w = firstwin; w != NULL; w = w->w_next, --n)
1182 #endif
1183 	if (n == 0)
1184 	    return window_new(w);
1185     return Qnil;
1186 }
1187 
1188 static VALUE window_buffer(VALUE self)
1189 {
1190     win_T *win = get_win(self);
1191 
1192     return buffer_new(win->w_buffer);
1193 }
1194 
1195 static VALUE window_height(VALUE self)
1196 {
1197     win_T *win = get_win(self);
1198 
1199     return INT2NUM(win->w_height);
1200 }
1201 
1202 static VALUE window_set_height(VALUE self, VALUE height)
1203 {
1204     win_T *win = get_win(self);
1205     win_T *savewin = curwin;
1206 
1207     curwin = win;
1208     win_setheight(NUM2INT(height));
1209     curwin = savewin;
1210     return height;
1211 }
1212 
1213 static VALUE window_width(VALUE self)
1214 {
1215     win_T *win = get_win(self);
1216 
1217     return INT2NUM(win->w_width);
1218 }
1219 
1220 static VALUE window_set_width(VALUE self, VALUE width)
1221 {
1222     win_T *win = get_win(self);
1223     win_T *savewin = curwin;
1224 
1225     curwin = win;
1226     win_setwidth(NUM2INT(width));
1227     curwin = savewin;
1228     return width;
1229 }
1230 
1231 static VALUE window_cursor(VALUE self)
1232 {
1233     win_T *win = get_win(self);
1234 
1235     return rb_assoc_new(INT2NUM(win->w_cursor.lnum), INT2NUM(win->w_cursor.col));
1236 }
1237 
1238 static VALUE window_set_cursor(VALUE self, VALUE pos)
1239 {
1240     VALUE lnum, col;
1241     win_T *win = get_win(self);
1242 
1243     Check_Type(pos, T_ARRAY);
1244     if (RARRAY_LEN(pos) != 2)
1245 	rb_raise(rb_eArgError, "array length must be 2");
1246     lnum = RARRAY_PTR(pos)[0];
1247     col = RARRAY_PTR(pos)[1];
1248     win->w_cursor.lnum = NUM2LONG(lnum);
1249     win->w_cursor.col = NUM2UINT(col);
1250     check_cursor();		    /* put cursor on an existing line */
1251     update_screen(NOT_VALID);
1252     return Qnil;
1253 }
1254 
1255 static VALUE f_nop(VALUE self UNUSED)
1256 {
1257     return Qnil;
1258 }
1259 
1260 static VALUE f_p(int argc, VALUE *argv, VALUE self UNUSED)
1261 {
1262     int i;
1263     VALUE str = rb_str_new("", 0);
1264 
1265     for (i = 0; i < argc; i++) {
1266 	if (i > 0) rb_str_cat(str, ", ", 2);
1267 	rb_str_concat(str, rb_inspect(argv[i]));
1268     }
1269     MSG(RSTRING_PTR(str));
1270     return Qnil;
1271 }
1272 
1273 static void ruby_io_init(void)
1274 {
1275 #ifndef DYNAMIC_RUBY
1276     RUBYEXTERN VALUE rb_stdout;
1277 #endif
1278 
1279     rb_stdout = rb_obj_alloc(rb_cObject);
1280     rb_define_singleton_method(rb_stdout, "write", vim_message, 1);
1281     rb_define_singleton_method(rb_stdout, "flush", f_nop, 0);
1282     rb_define_global_function("p", f_p, -1);
1283 }
1284 
1285 static void ruby_vim_init(void)
1286 {
1287     objtbl = rb_hash_new();
1288     rb_global_variable(&objtbl);
1289 
1290     /* The Vim module used to be called "VIM", but "Vim" is better.  Make an
1291      * alias "VIM" for backwards compatiblity. */
1292     mVIM = rb_define_module("Vim");
1293     rb_define_const(rb_cObject, "VIM", mVIM);
1294     rb_define_const(mVIM, "VERSION_MAJOR", INT2NUM(VIM_VERSION_MAJOR));
1295     rb_define_const(mVIM, "VERSION_MINOR", INT2NUM(VIM_VERSION_MINOR));
1296     rb_define_const(mVIM, "VERSION_BUILD", INT2NUM(VIM_VERSION_BUILD));
1297     rb_define_const(mVIM, "VERSION_PATCHLEVEL", INT2NUM(VIM_VERSION_PATCHLEVEL));
1298     rb_define_const(mVIM, "VERSION_SHORT", rb_str_new2(VIM_VERSION_SHORT));
1299     rb_define_const(mVIM, "VERSION_MEDIUM", rb_str_new2(VIM_VERSION_MEDIUM));
1300     rb_define_const(mVIM, "VERSION_LONG", rb_str_new2(VIM_VERSION_LONG));
1301     rb_define_const(mVIM, "VERSION_LONG_DATE", rb_str_new2(VIM_VERSION_LONG_DATE));
1302     rb_define_module_function(mVIM, "message", vim_message, 1);
1303     rb_define_module_function(mVIM, "set_option", vim_set_option, 1);
1304     rb_define_module_function(mVIM, "command", vim_command, 1);
1305     rb_define_module_function(mVIM, "evaluate", vim_evaluate, 1);
1306 
1307     eDeletedBufferError = rb_define_class_under(mVIM, "DeletedBufferError",
1308 						rb_eStandardError);
1309     eDeletedWindowError = rb_define_class_under(mVIM, "DeletedWindowError",
1310 						rb_eStandardError);
1311 
1312     cBuffer = rb_define_class_under(mVIM, "Buffer", rb_cObject);
1313     rb_define_singleton_method(cBuffer, "current", buffer_s_current, 0);
1314     rb_define_singleton_method(cBuffer, "count", buffer_s_count, 0);
1315     rb_define_singleton_method(cBuffer, "[]", buffer_s_aref, 1);
1316     rb_define_method(cBuffer, "name", buffer_name, 0);
1317     rb_define_method(cBuffer, "number", buffer_number, 0);
1318     rb_define_method(cBuffer, "count", buffer_count, 0);
1319     rb_define_method(cBuffer, "length", buffer_count, 0);
1320     rb_define_method(cBuffer, "[]", buffer_aref, 1);
1321     rb_define_method(cBuffer, "[]=", buffer_aset, 2);
1322     rb_define_method(cBuffer, "delete", buffer_delete, 1);
1323     rb_define_method(cBuffer, "append", buffer_append, 2);
1324 
1325     /* Added line manipulation functions
1326      *   SegPhault - 03/07/05 */
1327     rb_define_method(cBuffer, "line_number", current_line_number, 0);
1328     rb_define_method(cBuffer, "line", line_s_current, 0);
1329     rb_define_method(cBuffer, "line=", set_current_line, 1);
1330 
1331 
1332     cVimWindow = rb_define_class_under(mVIM, "Window", rb_cObject);
1333     rb_define_singleton_method(cVimWindow, "current", window_s_current, 0);
1334     rb_define_singleton_method(cVimWindow, "count", window_s_count, 0);
1335     rb_define_singleton_method(cVimWindow, "[]", window_s_aref, 1);
1336     rb_define_method(cVimWindow, "buffer", window_buffer, 0);
1337     rb_define_method(cVimWindow, "height", window_height, 0);
1338     rb_define_method(cVimWindow, "height=", window_set_height, 1);
1339     rb_define_method(cVimWindow, "width", window_width, 0);
1340     rb_define_method(cVimWindow, "width=", window_set_width, 1);
1341     rb_define_method(cVimWindow, "cursor", window_cursor, 0);
1342     rb_define_method(cVimWindow, "cursor=", window_set_cursor, 1);
1343 
1344     rb_define_virtual_variable("$curbuf", buffer_s_current, 0);
1345     rb_define_virtual_variable("$curwin", window_s_current, 0);
1346 }
1347