xref: /vim-8.2.3635/src/if_ruby.c (revision 51ad4eaa)
1 /* vi:set ts=8 sts=4 sw=4 noet:
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 #if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 24
35 # define USE_RUBY_INTEGER
36 #endif
37 
38 #ifdef DYNAMIC_RUBY
39 /*
40  * This is tricky.  In ruby.h there is (inline) function rb_class_of()
41  * definition.  This function use these variables.  But we want function to
42  * use dll_* variables.
43  */
44 # define rb_cFalseClass		(*dll_rb_cFalseClass)
45 # define rb_cFixnum		(*dll_rb_cFixnum)
46 # if defined(USE_RUBY_INTEGER)
47 #  define rb_cInteger		(*dll_rb_cInteger)
48 # endif
49 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 20
50 #  define rb_cFloat		(*dll_rb_cFloat)
51 # endif
52 # define rb_cNilClass		(*dll_rb_cNilClass)
53 # define rb_cSymbol		(*dll_rb_cSymbol)
54 # define rb_cTrueClass		(*dll_rb_cTrueClass)
55 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
56 /*
57  * On ver 1.8, all Ruby functions are exported with "__declspec(dllimport)"
58  * in ruby.h.  But it causes trouble for these variables, because it is
59  * defined in this file.  When defined this RUBY_EXPORT it modified to
60  * "extern" and be able to avoid this problem.
61  */
62 #  define RUBY_EXPORT
63 # endif
64 
65 #if !(defined(WIN32) || defined(_WIN64))
66 # include <dlfcn.h>
67 # define HINSTANCE void*
68 # define RUBY_PROC void*
69 # define load_dll(n) dlopen((n), RTLD_LAZY|RTLD_GLOBAL)
70 # define symbol_from_dll dlsym
71 # define close_dll dlclose
72 #else
73 # define RUBY_PROC FARPROC
74 # define load_dll vimLoadLib
75 # define symbol_from_dll GetProcAddress
76 # define close_dll FreeLibrary
77 #endif
78 
79 #endif  /* ifdef DYNAMIC_RUBY */
80 
81 /* suggested by Ariya Mizutani */
82 #if (_MSC_VER == 1200)
83 # undef _WIN32_WINNT
84 #endif
85 
86 #if (defined(RUBY_VERSION) && RUBY_VERSION >= 19) \
87     || (defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 19)
88 # define RUBY19_OR_LATER 1
89 #endif
90 
91 #if (defined(RUBY_VERSION) && RUBY_VERSION >= 20) \
92     || (defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 20)
93 # define RUBY20_OR_LATER 1
94 #endif
95 
96 #if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 19
97 /* Ruby 1.9 defines a number of static functions which use rb_num2long and
98  * rb_int2big */
99 # define rb_num2long rb_num2long_stub
100 # define rb_int2big rb_int2big_stub
101 #endif
102 
103 #if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 19 \
104 	&& VIM_SIZEOF_INT < VIM_SIZEOF_LONG
105 /* Ruby 1.9 defines a number of static functions which use rb_fix2int and
106  * rb_num2int if VIM_SIZEOF_INT < VIM_SIZEOF_LONG (64bit) */
107 # define rb_fix2int rb_fix2int_stub
108 # define rb_num2int rb_num2int_stub
109 #endif
110 
111 #if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER == 21
112 /* Ruby 2.1 adds new GC called RGenGC and RARRAY_PTR uses
113  * rb_gc_writebarrier_unprotect_promoted if USE_RGENGC  */
114 # define rb_gc_writebarrier_unprotect_promoted rb_gc_writebarrier_unprotect_promoted_stub
115 #endif
116 #if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 22
117 # define rb_gc_writebarrier_unprotect rb_gc_writebarrier_unprotect_stub
118 #endif
119 
120 #include <ruby.h>
121 #ifdef RUBY19_OR_LATER
122 # include <ruby/encoding.h>
123 #endif
124 
125 #undef off_t	/* ruby defines off_t as _int64, Mingw uses long */
126 #undef EXTERN
127 #undef _
128 
129 /* T_DATA defined both by Ruby and Mac header files, hack around it... */
130 #if defined(MACOS_X)
131 # define __OPENTRANSPORT__
132 # define __OPENTRANSPORTPROTOCOL__
133 # define __OPENTRANSPORTPROVIDERS__
134 #endif
135 
136 /*
137  * The TypedData_XXX macro family can be used since Ruby 1.9.2 but
138  * rb_data_type_t changed in 1.9.3, therefore require at least 2.0.
139  * The old Data_XXX macro family was deprecated on Ruby 2.2.
140  * Use TypedData_XXX if available.
141  */
142 #if defined(TypedData_Wrap_Struct) && defined(RUBY20_OR_LATER)
143 # define USE_TYPEDDATA	1
144 #endif
145 
146 /*
147  * Backward compatibility for Ruby 1.8 and earlier.
148  * Ruby 1.9 does not provide STR2CSTR, instead StringValuePtr is provided.
149  * Ruby 1.9 does not provide RXXX(s)->len and RXXX(s)->ptr, instead
150  * RXXX_LEN(s) and RXXX_PTR(s) are provided.
151  */
152 #ifndef StringValuePtr
153 # define StringValuePtr(s) STR2CSTR(s)
154 #endif
155 #ifndef RARRAY_LEN
156 # define RARRAY_LEN(s) RARRAY(s)->len
157 #endif
158 #ifndef RARRAY_PTR
159 # define RARRAY_PTR(s) RARRAY(s)->ptr
160 #endif
161 #ifndef RSTRING_LEN
162 # define RSTRING_LEN(s) RSTRING(s)->len
163 #endif
164 #ifndef RSTRING_PTR
165 # define RSTRING_PTR(s) RSTRING(s)->ptr
166 #endif
167 
168 #ifdef HAVE_DUP
169 # undef HAVE_DUP
170 #endif
171 
172 #include "vim.h"
173 #include "version.h"
174 
175 #if defined(PROTO) && !defined(FEAT_RUBY)
176 /* Define these to be able to generate the function prototypes. */
177 # define VALUE int
178 # define RUBY_DATA_FUNC int
179 #endif
180 
181 static int ruby_initialized = 0;
182 static void *ruby_stack_start;
183 static VALUE objtbl;
184 
185 static VALUE mVIM;
186 static VALUE cBuffer;
187 static VALUE cVimWindow;
188 static VALUE eDeletedBufferError;
189 static VALUE eDeletedWindowError;
190 
191 static int ensure_ruby_initialized(void);
192 static void error_print(int);
193 static void ruby_io_init(void);
194 static void ruby_vim_init(void);
195 
196 #if defined(RUBY19_OR_LATER) || defined(RUBY_INIT_STACK)
197 # if defined(__ia64) && !defined(ruby_init_stack)
198 #  define ruby_init_stack(addr) ruby_init_stack((addr), rb_ia64_bsp())
199 # endif
200 #endif
201 
202 #if defined(DYNAMIC_RUBY) || defined(PROTO)
203 # if defined(PROTO) && !defined(HINSTANCE)
204 #  define HINSTANCE int		/* for generating prototypes */
205 # endif
206 
207 /*
208  * Wrapper defines
209  */
210 # define rb_assoc_new			dll_rb_assoc_new
211 # define rb_cObject			(*dll_rb_cObject)
212 # define rb_check_type			dll_rb_check_type
213 # ifdef USE_TYPEDDATA
214 #  define rb_check_typeddata		dll_rb_check_typeddata
215 # endif
216 # define rb_class_path			dll_rb_class_path
217 # ifdef USE_TYPEDDATA
218 #  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 23
219 #   define rb_data_typed_object_wrap	dll_rb_data_typed_object_wrap
220 #  else
221 #   define rb_data_typed_object_alloc	dll_rb_data_typed_object_alloc
222 #  endif
223 # else
224 #  define rb_data_object_alloc		dll_rb_data_object_alloc
225 # endif
226 # define rb_define_class_under		dll_rb_define_class_under
227 # define rb_define_const			dll_rb_define_const
228 # define rb_define_global_function	dll_rb_define_global_function
229 # define rb_define_method		dll_rb_define_method
230 # define rb_define_module		dll_rb_define_module
231 # define rb_define_module_function	dll_rb_define_module_function
232 # define rb_define_singleton_method	dll_rb_define_singleton_method
233 # define rb_define_virtual_variable	dll_rb_define_virtual_variable
234 # define rb_stdout			(*dll_rb_stdout)
235 # define rb_eArgError			(*dll_rb_eArgError)
236 # define rb_eIndexError			(*dll_rb_eIndexError)
237 # define rb_eRuntimeError		(*dll_rb_eRuntimeError)
238 # define rb_eStandardError		(*dll_rb_eStandardError)
239 # define rb_eval_string_protect		dll_rb_eval_string_protect
240 # define rb_global_variable		dll_rb_global_variable
241 # define rb_hash_aset			dll_rb_hash_aset
242 # define rb_hash_new			dll_rb_hash_new
243 # define rb_inspect			dll_rb_inspect
244 # define rb_int2inum			dll_rb_int2inum
245 # if VIM_SIZEOF_INT < VIM_SIZEOF_LONG /* 64 bits only */
246 #  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER <= 18
247 #   define rb_fix2int			dll_rb_fix2int
248 #   define rb_num2int			dll_rb_num2int
249 #  endif
250 #  define rb_num2uint			dll_rb_num2uint
251 # endif
252 # define rb_lastline_get			dll_rb_lastline_get
253 # define rb_lastline_set			dll_rb_lastline_set
254 # define rb_protect			dll_rb_protect
255 # define rb_load			dll_rb_load
256 # ifndef RUBY19_OR_LATER
257 #  define rb_num2long			dll_rb_num2long
258 # endif
259 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER <= 19
260 #  define rb_num2ulong			dll_rb_num2ulong
261 # endif
262 # define rb_obj_alloc			dll_rb_obj_alloc
263 # define rb_obj_as_string		dll_rb_obj_as_string
264 # define rb_obj_id			dll_rb_obj_id
265 # define rb_raise			dll_rb_raise
266 # define rb_str_cat			dll_rb_str_cat
267 # define rb_str_concat			dll_rb_str_concat
268 # undef rb_str_new
269 # define rb_str_new			dll_rb_str_new
270 # ifdef rb_str_new2
271 /* Ruby may #define rb_str_new2 to use rb_str_new_cstr. */
272 #  define need_rb_str_new_cstr 1
273 /* Ruby's headers #define rb_str_new_cstr to make use of GCC's
274  * __builtin_constant_p extension. */
275 #  undef rb_str_new_cstr
276 #  define rb_str_new_cstr		dll_rb_str_new_cstr
277 # else
278 #  define rb_str_new2			dll_rb_str_new2
279 # endif
280 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
281 #  define rb_string_value		dll_rb_string_value
282 #  define rb_string_value_ptr		dll_rb_string_value_ptr
283 #  define rb_float_new			dll_rb_float_new
284 #  define rb_ary_new			dll_rb_ary_new
285 #  define rb_ary_push			dll_rb_ary_push
286 #  if defined(RUBY19_OR_LATER) || defined(RUBY_INIT_STACK)
287 #   ifdef __ia64
288 #    define rb_ia64_bsp			dll_rb_ia64_bsp
289 #    undef ruby_init_stack
290 #    define ruby_init_stack(addr)	dll_ruby_init_stack((addr), rb_ia64_bsp())
291 #   else
292 #    define ruby_init_stack		dll_ruby_init_stack
293 #   endif
294 #  endif
295 # else
296 #  define rb_str2cstr			dll_rb_str2cstr
297 # endif
298 # ifdef RUBY19_OR_LATER
299 #  define rb_errinfo			dll_rb_errinfo
300 # else
301 #  define ruby_errinfo			(*dll_ruby_errinfo)
302 # endif
303 # define ruby_init			dll_ruby_init
304 # define ruby_init_loadpath		dll_ruby_init_loadpath
305 # ifdef WIN3264
306 #  define NtInitialize			dll_NtInitialize
307 #  define ruby_sysinit			dll_ruby_sysinit
308 #  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
309 #   define rb_w32_snprintf		dll_rb_w32_snprintf
310 #  endif
311 # endif
312 
313 # ifdef RUBY19_OR_LATER
314 #  define ruby_script			dll_ruby_script
315 #  define rb_enc_find_index		dll_rb_enc_find_index
316 #  define rb_enc_find			dll_rb_enc_find
317 #  undef rb_enc_str_new
318 #  define rb_enc_str_new		dll_rb_enc_str_new
319 #  define rb_sprintf			dll_rb_sprintf
320 #  define rb_require			dll_rb_require
321 #  define ruby_options			dll_ruby_options
322 # endif
323 
324 /*
325  * Pointers for dynamic link
326  */
327 static VALUE (*dll_rb_assoc_new) (VALUE, VALUE);
328 VALUE *dll_rb_cFalseClass;
329 VALUE *dll_rb_cFixnum;
330 # if defined(USE_RUBY_INTEGER)
331 VALUE *dll_rb_cInteger;
332 # endif
333 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 20
334 VALUE *dll_rb_cFloat;
335 # endif
336 VALUE *dll_rb_cNilClass;
337 static VALUE *dll_rb_cObject;
338 VALUE *dll_rb_cSymbol;
339 VALUE *dll_rb_cTrueClass;
340 static void (*dll_rb_check_type) (VALUE,int);
341 # ifdef USE_TYPEDDATA
342 static void *(*dll_rb_check_typeddata) (VALUE,const rb_data_type_t *);
343 # endif
344 static VALUE (*dll_rb_class_path) (VALUE);
345 # ifdef USE_TYPEDDATA
346 #  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 23
347 static VALUE (*dll_rb_data_typed_object_wrap) (VALUE, void*, const rb_data_type_t *);
348 #  else
349 static VALUE (*dll_rb_data_typed_object_alloc) (VALUE, void*, const rb_data_type_t *);
350 #  endif
351 # else
352 static VALUE (*dll_rb_data_object_alloc) (VALUE, void*, RUBY_DATA_FUNC, RUBY_DATA_FUNC);
353 # endif
354 static VALUE (*dll_rb_define_class_under) (VALUE, const char*, VALUE);
355 static void (*dll_rb_define_const) (VALUE,const char*,VALUE);
356 static void (*dll_rb_define_global_function) (const char*,VALUE(*)(),int);
357 static void (*dll_rb_define_method) (VALUE,const char*,VALUE(*)(),int);
358 static VALUE (*dll_rb_define_module) (const char*);
359 static void (*dll_rb_define_module_function) (VALUE,const char*,VALUE(*)(),int);
360 static void (*dll_rb_define_singleton_method) (VALUE,const char*,VALUE(*)(),int);
361 static void (*dll_rb_define_virtual_variable) (const char*,VALUE(*)(),void(*)());
362 static VALUE *dll_rb_stdout;
363 static VALUE *dll_rb_eArgError;
364 static VALUE *dll_rb_eIndexError;
365 static VALUE *dll_rb_eRuntimeError;
366 static VALUE *dll_rb_eStandardError;
367 static VALUE (*dll_rb_eval_string_protect) (const char*, int*);
368 static void (*dll_rb_global_variable) (VALUE*);
369 static VALUE (*dll_rb_hash_aset) (VALUE, VALUE, VALUE);
370 static VALUE (*dll_rb_hash_new) (void);
371 static VALUE (*dll_rb_inspect) (VALUE);
372 static VALUE (*dll_rb_int2inum) (long);
373 # if VIM_SIZEOF_INT < VIM_SIZEOF_LONG /* 64 bits only */
374 static long (*dll_rb_fix2int) (VALUE);
375 static long (*dll_rb_num2int) (VALUE);
376 static unsigned long (*dll_rb_num2uint) (VALUE);
377 # endif
378 static VALUE (*dll_rb_lastline_get) (void);
379 static void (*dll_rb_lastline_set) (VALUE);
380 static VALUE (*dll_rb_protect) (VALUE (*)(VALUE), VALUE, int*);
381 static void (*dll_rb_load) (VALUE, int);
382 static long (*dll_rb_num2long) (VALUE);
383 static unsigned long (*dll_rb_num2ulong) (VALUE);
384 static VALUE (*dll_rb_obj_alloc) (VALUE);
385 static VALUE (*dll_rb_obj_as_string) (VALUE);
386 static VALUE (*dll_rb_obj_id) (VALUE);
387 static void (*dll_rb_raise) (VALUE, const char*, ...);
388 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
389 static VALUE (*dll_rb_string_value) (volatile VALUE*);
390 # else
391 static char *(*dll_rb_str2cstr) (VALUE,int*);
392 # endif
393 static VALUE (*dll_rb_str_cat) (VALUE, const char*, long);
394 static VALUE (*dll_rb_str_concat) (VALUE, VALUE);
395 static VALUE (*dll_rb_str_new) (const char*, long);
396 # ifdef need_rb_str_new_cstr
397 /* Ruby may #define rb_str_new2 to use rb_str_new_cstr. */
398 static VALUE (*dll_rb_str_new_cstr) (const char*);
399 # else
400 static VALUE (*dll_rb_str_new2) (const char*);
401 # endif
402 # ifdef RUBY19_OR_LATER
403 static VALUE (*dll_rb_errinfo) (void);
404 # else
405 static VALUE *dll_ruby_errinfo;
406 # endif
407 static void (*dll_ruby_init) (void);
408 static void (*dll_ruby_init_loadpath) (void);
409 # ifdef WIN3264
410 static void (*dll_NtInitialize) (int*, char***);
411 static void (*dll_ruby_sysinit) (int*, char***);
412 #  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
413 static int (*dll_rb_w32_snprintf)(char*, size_t, const char*, ...);
414 #  endif
415 # endif
416 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
417 static char * (*dll_rb_string_value_ptr) (volatile VALUE*);
418 static VALUE (*dll_rb_float_new) (double);
419 static VALUE (*dll_rb_ary_new) (void);
420 static VALUE (*dll_rb_ary_push) (VALUE, VALUE);
421 #  if defined(RUBY19_OR_LATER) || defined(RUBY_INIT_STACK)
422 #   ifdef __ia64
423 static void * (*dll_rb_ia64_bsp) (void);
424 static void (*dll_ruby_init_stack)(VALUE*, void*);
425 #   else
426 static void (*dll_ruby_init_stack)(VALUE*);
427 #   endif
428 #  endif
429 # endif
430 # ifdef RUBY19_OR_LATER
431 static VALUE (*dll_rb_int2big)(SIGNED_VALUE);
432 # endif
433 
434 # ifdef RUBY19_OR_LATER
435 static void (*dll_ruby_script) (const char*);
436 static int (*dll_rb_enc_find_index) (const char*);
437 static rb_encoding* (*dll_rb_enc_find) (const char*);
438 static VALUE (*dll_rb_enc_str_new) (const char*, long, rb_encoding*);
439 static VALUE (*dll_rb_sprintf) (const char*, ...);
440 static VALUE (*dll_rb_require) (const char*);
441 static void* (*ruby_options)(int, char**);
442 # endif
443 
444 # if defined(USE_RGENGC) && USE_RGENGC
445 #  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER == 21
446 static void (*dll_rb_gc_writebarrier_unprotect_promoted)(VALUE);
447 #  else
448 static void (*dll_rb_gc_writebarrier_unprotect)(VALUE obj);
449 #  endif
450 # endif
451 
452 # if defined(RUBY19_OR_LATER) && !defined(PROTO)
453 #  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 22
454 long rb_num2long_stub(VALUE x)
455 #  else
456 SIGNED_VALUE rb_num2long_stub(VALUE x)
457 #  endif
458 {
459     return dll_rb_num2long(x);
460 }
461 VALUE rb_int2big_stub(SIGNED_VALUE x)
462 {
463     return dll_rb_int2big(x);
464 }
465 #  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 19 \
466 	&& VIM_SIZEOF_INT < VIM_SIZEOF_LONG
467 long rb_fix2int_stub(VALUE x)
468 {
469     return dll_rb_fix2int(x);
470 }
471 long rb_num2int_stub(VALUE x)
472 {
473     return dll_rb_num2int(x);
474 }
475 #  endif
476 #  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 20
477 VALUE
478 rb_float_new_in_heap(double d)
479 {
480     return dll_rb_float_new(d);
481 }
482 #   if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 22
483 unsigned long rb_num2ulong(VALUE x)
484 #   else
485 VALUE rb_num2ulong(VALUE x)
486 #   endif
487 {
488     return (long)RSHIFT((SIGNED_VALUE)(x),1);
489 }
490 #  endif
491 # endif
492 
493    /* Do not generate a prototype here, VALUE isn't always defined. */
494 # if defined(USE_RGENGC) && USE_RGENGC && !defined(PROTO)
495 #  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER == 21
496 void rb_gc_writebarrier_unprotect_promoted_stub(VALUE obj)
497 {
498     dll_rb_gc_writebarrier_unprotect_promoted(obj);
499 }
500 #  else
501 void rb_gc_writebarrier_unprotect_stub(VALUE obj)
502 {
503     dll_rb_gc_writebarrier_unprotect(obj);
504 }
505 #  endif
506 # endif
507 
508 static HINSTANCE hinstRuby = NULL; /* Instance of ruby.dll */
509 
510 /*
511  * Table of name to function pointer of ruby.
512  */
513 static struct
514 {
515     char *name;
516     RUBY_PROC *ptr;
517 } ruby_funcname_table[] =
518 {
519     {"rb_assoc_new", (RUBY_PROC*)&dll_rb_assoc_new},
520     {"rb_cFalseClass", (RUBY_PROC*)&dll_rb_cFalseClass},
521 # if defined(USE_RUBY_INTEGER)
522     {"rb_cInteger", (RUBY_PROC*)&dll_rb_cInteger},
523 # else
524     {"rb_cFixnum", (RUBY_PROC*)&dll_rb_cFixnum},
525 # endif
526 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 20
527     {"rb_cFloat", (RUBY_PROC*)&dll_rb_cFloat},
528 # endif
529     {"rb_cNilClass", (RUBY_PROC*)&dll_rb_cNilClass},
530     {"rb_cObject", (RUBY_PROC*)&dll_rb_cObject},
531     {"rb_cSymbol", (RUBY_PROC*)&dll_rb_cSymbol},
532     {"rb_cTrueClass", (RUBY_PROC*)&dll_rb_cTrueClass},
533     {"rb_check_type", (RUBY_PROC*)&dll_rb_check_type},
534 # ifdef USE_TYPEDDATA
535     {"rb_check_typeddata", (RUBY_PROC*)&dll_rb_check_typeddata},
536 # endif
537     {"rb_class_path", (RUBY_PROC*)&dll_rb_class_path},
538 # ifdef USE_TYPEDDATA
539 #  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 23
540     {"rb_data_typed_object_wrap", (RUBY_PROC*)&dll_rb_data_typed_object_wrap},
541 #  else
542     {"rb_data_typed_object_alloc", (RUBY_PROC*)&dll_rb_data_typed_object_alloc},
543 #  endif
544 # else
545     {"rb_data_object_alloc", (RUBY_PROC*)&dll_rb_data_object_alloc},
546 # endif
547     {"rb_define_class_under", (RUBY_PROC*)&dll_rb_define_class_under},
548     {"rb_define_const", (RUBY_PROC*)&dll_rb_define_const},
549     {"rb_define_global_function", (RUBY_PROC*)&dll_rb_define_global_function},
550     {"rb_define_method", (RUBY_PROC*)&dll_rb_define_method},
551     {"rb_define_module", (RUBY_PROC*)&dll_rb_define_module},
552     {"rb_define_module_function", (RUBY_PROC*)&dll_rb_define_module_function},
553     {"rb_define_singleton_method", (RUBY_PROC*)&dll_rb_define_singleton_method},
554     {"rb_define_virtual_variable", (RUBY_PROC*)&dll_rb_define_virtual_variable},
555     {"rb_stdout", (RUBY_PROC*)&dll_rb_stdout},
556     {"rb_eArgError", (RUBY_PROC*)&dll_rb_eArgError},
557     {"rb_eIndexError", (RUBY_PROC*)&dll_rb_eIndexError},
558     {"rb_eRuntimeError", (RUBY_PROC*)&dll_rb_eRuntimeError},
559     {"rb_eStandardError", (RUBY_PROC*)&dll_rb_eStandardError},
560     {"rb_eval_string_protect", (RUBY_PROC*)&dll_rb_eval_string_protect},
561     {"rb_global_variable", (RUBY_PROC*)&dll_rb_global_variable},
562     {"rb_hash_aset", (RUBY_PROC*)&dll_rb_hash_aset},
563     {"rb_hash_new", (RUBY_PROC*)&dll_rb_hash_new},
564     {"rb_inspect", (RUBY_PROC*)&dll_rb_inspect},
565     {"rb_int2inum", (RUBY_PROC*)&dll_rb_int2inum},
566 # if VIM_SIZEOF_INT < VIM_SIZEOF_LONG /* 64 bits only */
567     {"rb_fix2int", (RUBY_PROC*)&dll_rb_fix2int},
568     {"rb_num2int", (RUBY_PROC*)&dll_rb_num2int},
569     {"rb_num2uint", (RUBY_PROC*)&dll_rb_num2uint},
570 # endif
571     {"rb_lastline_get", (RUBY_PROC*)&dll_rb_lastline_get},
572     {"rb_lastline_set", (RUBY_PROC*)&dll_rb_lastline_set},
573     {"rb_protect", (RUBY_PROC*)&dll_rb_protect},
574     {"rb_load", (RUBY_PROC*)&dll_rb_load},
575     {"rb_num2long", (RUBY_PROC*)&dll_rb_num2long},
576     {"rb_num2ulong", (RUBY_PROC*)&dll_rb_num2ulong},
577     {"rb_obj_alloc", (RUBY_PROC*)&dll_rb_obj_alloc},
578     {"rb_obj_as_string", (RUBY_PROC*)&dll_rb_obj_as_string},
579     {"rb_obj_id", (RUBY_PROC*)&dll_rb_obj_id},
580     {"rb_raise", (RUBY_PROC*)&dll_rb_raise},
581 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
582     {"rb_string_value", (RUBY_PROC*)&dll_rb_string_value},
583 # else
584     {"rb_str2cstr", (RUBY_PROC*)&dll_rb_str2cstr},
585 # endif
586     {"rb_str_cat", (RUBY_PROC*)&dll_rb_str_cat},
587     {"rb_str_concat", (RUBY_PROC*)&dll_rb_str_concat},
588     {"rb_str_new", (RUBY_PROC*)&dll_rb_str_new},
589 # ifdef need_rb_str_new_cstr
590     {"rb_str_new_cstr", (RUBY_PROC*)&dll_rb_str_new_cstr},
591 # else
592     {"rb_str_new2", (RUBY_PROC*)&dll_rb_str_new2},
593 # endif
594 # ifdef RUBY19_OR_LATER
595     {"rb_errinfo", (RUBY_PROC*)&dll_rb_errinfo},
596 # else
597     {"ruby_errinfo", (RUBY_PROC*)&dll_ruby_errinfo},
598 # endif
599     {"ruby_init", (RUBY_PROC*)&dll_ruby_init},
600     {"ruby_init_loadpath", (RUBY_PROC*)&dll_ruby_init_loadpath},
601 # ifdef WIN3264
602 #  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER < 19
603     {"NtInitialize", (RUBY_PROC*)&dll_NtInitialize},
604 #  else
605     {"ruby_sysinit", (RUBY_PROC*)&dll_ruby_sysinit},
606 #  endif
607 #  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
608     {"rb_w32_snprintf", (RUBY_PROC*)&dll_rb_w32_snprintf},
609 #  endif
610 # endif
611 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
612     {"rb_string_value_ptr", (RUBY_PROC*)&dll_rb_string_value_ptr},
613 #  if DYNAMIC_RUBY_VER <= 19
614     {"rb_float_new", (RUBY_PROC*)&dll_rb_float_new},
615 #  else
616     {"rb_float_new_in_heap", (RUBY_PROC*)&dll_rb_float_new},
617 #  endif
618     {"rb_ary_new", (RUBY_PROC*)&dll_rb_ary_new},
619     {"rb_ary_push", (RUBY_PROC*)&dll_rb_ary_push},
620 # endif
621 # ifdef RUBY19_OR_LATER
622     {"rb_int2big", (RUBY_PROC*)&dll_rb_int2big},
623     {"ruby_script", (RUBY_PROC*)&dll_ruby_script},
624     {"rb_enc_find_index", (RUBY_PROC*)&dll_rb_enc_find_index},
625     {"rb_enc_find", (RUBY_PROC*)&dll_rb_enc_find},
626     {"rb_enc_str_new", (RUBY_PROC*)&dll_rb_enc_str_new},
627     {"rb_sprintf", (RUBY_PROC*)&dll_rb_sprintf},
628     {"rb_require", (RUBY_PROC*)&dll_rb_require},
629     {"ruby_options", (RUBY_PROC*)&dll_ruby_options},
630 # endif
631 # if defined(RUBY19_OR_LATER) || defined(RUBY_INIT_STACK)
632 #  ifdef __ia64
633     {"rb_ia64_bsp", (RUBY_PROC*)&dll_rb_ia64_bsp},
634 #  endif
635     {"ruby_init_stack", (RUBY_PROC*)&dll_ruby_init_stack},
636 # endif
637 # if defined(USE_RGENGC) && USE_RGENGC
638 #  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER == 21
639     {"rb_gc_writebarrier_unprotect_promoted", (RUBY_PROC*)&dll_rb_gc_writebarrier_unprotect_promoted},
640 #  else
641     {"rb_gc_writebarrier_unprotect", (RUBY_PROC*)&dll_rb_gc_writebarrier_unprotect},
642 #  endif
643 # endif
644     {"", NULL},
645 };
646 
647 /*
648  * Free ruby.dll
649  */
650     static void
651 end_dynamic_ruby(void)
652 {
653     if (hinstRuby)
654     {
655 	close_dll(hinstRuby);
656 	hinstRuby = NULL;
657     }
658 }
659 
660 /*
661  * Load library and get all pointers.
662  * Parameter 'libname' provides name of DLL.
663  * Return OK or FAIL.
664  */
665     static int
666 ruby_runtime_link_init(char *libname, int verbose)
667 {
668     int i;
669 
670     if (hinstRuby)
671 	return OK;
672     hinstRuby = load_dll(libname);
673     if (!hinstRuby)
674     {
675 	if (verbose)
676 	    EMSG2(_(e_loadlib), libname);
677 	return FAIL;
678     }
679 
680     for (i = 0; ruby_funcname_table[i].ptr; ++i)
681     {
682 	if (!(*ruby_funcname_table[i].ptr = symbol_from_dll(hinstRuby,
683 			ruby_funcname_table[i].name)))
684 	{
685 	    close_dll(hinstRuby);
686 	    hinstRuby = NULL;
687 	    if (verbose)
688 		EMSG2(_(e_loadfunc), ruby_funcname_table[i].name);
689 	    return FAIL;
690 	}
691     }
692     return OK;
693 }
694 
695 /*
696  * If ruby is enabled (there is installed ruby on Windows system) return TRUE,
697  * else FALSE.
698  */
699     int
700 ruby_enabled(int verbose)
701 {
702     return ruby_runtime_link_init((char *)p_rubydll, verbose) == OK;
703 }
704 #endif /* defined(DYNAMIC_RUBY) || defined(PROTO) */
705 
706     void
707 ruby_end(void)
708 {
709 #ifdef DYNAMIC_RUBY
710     end_dynamic_ruby();
711 #endif
712 }
713 
714 void ex_ruby(exarg_T *eap)
715 {
716     int state;
717     char *script = NULL;
718 
719     script = (char *)script_get(eap, eap->arg);
720     if (!eap->skip && ensure_ruby_initialized())
721     {
722 	if (script == NULL)
723 	    rb_eval_string_protect((char *)eap->arg, &state);
724 	else
725 	    rb_eval_string_protect(script, &state);
726 	if (state)
727 	    error_print(state);
728     }
729     vim_free(script);
730 }
731 
732 /*
733  *  In Ruby 1.9 or later, ruby String object has encoding.
734  *  conversion buffer string of vim to ruby String object using
735  *  VIM encoding option.
736  */
737     static VALUE
738 vim_str2rb_enc_str(const char *s)
739 {
740 #ifdef RUBY19_OR_LATER
741     int isnum;
742     long lval;
743     char_u *sval;
744     rb_encoding *enc;
745 
746     isnum = get_option_value((char_u *)"enc", &lval, &sval, 0);
747     if (isnum == 0)
748     {
749 	enc = rb_enc_find((char *)sval);
750 	vim_free(sval);
751 	if (enc)
752 	{
753 	    return rb_enc_str_new(s, (long)strlen(s), enc);
754 	}
755     }
756 #endif
757     return rb_str_new2(s);
758 }
759 
760     static VALUE
761 eval_enc_string_protect(const char *str, int *state)
762 {
763 #ifdef RUBY19_OR_LATER
764     int isnum;
765     long lval;
766     char_u *sval;
767     rb_encoding *enc;
768     VALUE v;
769 
770     isnum = get_option_value((char_u *)"enc", &lval, &sval, 0);
771     if (isnum == 0)
772     {
773 	enc = rb_enc_find((char *)sval);
774 	vim_free(sval);
775 	if (enc)
776 	{
777 	    v = rb_sprintf("#-*- coding:%s -*-\n%s", rb_enc_name(enc), str);
778 	    return rb_eval_string_protect(StringValuePtr(v), state);
779 	}
780     }
781 #endif
782     return rb_eval_string_protect(str, state);
783 }
784 
785 void ex_rubydo(exarg_T *eap)
786 {
787     int state;
788     linenr_T i;
789     buf_T   *was_curbuf = curbuf;
790 
791     if (ensure_ruby_initialized())
792     {
793 	if (u_save(eap->line1 - 1, eap->line2 + 1) != OK)
794 	    return;
795 	for (i = eap->line1; i <= eap->line2; i++)
796 	{
797 	    VALUE line;
798 
799 	    if (i > curbuf->b_ml.ml_line_count)
800 		break;
801 	    line = vim_str2rb_enc_str((char *)ml_get(i));
802 	    rb_lastline_set(line);
803 	    eval_enc_string_protect((char *) eap->arg, &state);
804 	    if (state)
805 	    {
806 		error_print(state);
807 		break;
808 	    }
809 	    if (was_curbuf != curbuf)
810 		break;
811 	    line = rb_lastline_get();
812 	    if (!NIL_P(line))
813 	    {
814 		if (TYPE(line) != T_STRING)
815 		{
816 		    EMSG(_("E265: $_ must be an instance of String"));
817 		    return;
818 		}
819 		ml_replace(i, (char_u *) StringValuePtr(line), 1);
820 		changed();
821 #ifdef SYNTAX_HL
822 		syn_changed(i); /* recompute syntax hl. for this line */
823 #endif
824 	    }
825 	}
826 	check_cursor();
827 	update_curbuf(NOT_VALID);
828     }
829 }
830 
831 VALUE rb_load_wrap(VALUE file_to_load)
832 {
833     rb_load(file_to_load, 0);
834     return Qnil;
835 }
836 
837 void ex_rubyfile(exarg_T *eap)
838 {
839     int state;
840 
841     if (ensure_ruby_initialized())
842     {
843 	VALUE file_to_load = rb_str_new2((const char *)eap->arg);
844 	rb_protect(rb_load_wrap, file_to_load, &state);
845 	if (state)
846 	    error_print(state);
847     }
848 }
849 
850 void ruby_buffer_free(buf_T *buf)
851 {
852     if (buf->b_ruby_ref)
853     {
854 	rb_hash_aset(objtbl, rb_obj_id((VALUE) buf->b_ruby_ref), Qnil);
855 	RDATA(buf->b_ruby_ref)->data = NULL;
856     }
857 }
858 
859 void ruby_window_free(win_T *win)
860 {
861     if (win->w_ruby_ref)
862     {
863 	rb_hash_aset(objtbl, rb_obj_id((VALUE) win->w_ruby_ref), Qnil);
864 	RDATA(win->w_ruby_ref)->data = NULL;
865     }
866 }
867 
868 static int ensure_ruby_initialized(void)
869 {
870     if (!ruby_initialized)
871     {
872 #ifdef DYNAMIC_RUBY
873 	if (ruby_enabled(TRUE))
874 	{
875 #endif
876 #ifdef _WIN32
877 	    /* suggested by Ariya Mizutani */
878 	    int argc = 1;
879 	    char *argv[] = {"gvim.exe"};
880 	    char **argvp = argv;
881 # ifdef RUBY19_OR_LATER
882 	    ruby_sysinit(&argc, &argvp);
883 # else
884 	    NtInitialize(&argc, &argvp);
885 # endif
886 #endif
887 	    {
888 #if defined(RUBY19_OR_LATER) || defined(RUBY_INIT_STACK)
889 		ruby_init_stack(ruby_stack_start);
890 #endif
891 		ruby_init();
892 	    }
893 #ifdef RUBY19_OR_LATER
894 	    {
895 		int dummy_argc = 2;
896 		char *dummy_argv[] = {"vim-ruby", "-e_=0"};
897 		ruby_options(dummy_argc, dummy_argv);
898 	    }
899 	    ruby_script("vim-ruby");
900 #else
901 	    ruby_init_loadpath();
902 #endif
903 	    ruby_io_init();
904 	    ruby_vim_init();
905 	    ruby_initialized = 1;
906 #ifdef DYNAMIC_RUBY
907 	}
908 	else
909 	{
910 	    EMSG(_("E266: Sorry, this command is disabled, the Ruby library could not be loaded."));
911 	    return 0;
912 	}
913 #endif
914     }
915     return ruby_initialized;
916 }
917 
918 static void error_print(int state)
919 {
920 #ifndef DYNAMIC_RUBY
921 #if !(defined(RUBY_VERSION) && RUBY_VERSION >= 19) \
922     && !(defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 19)
923     RUBYEXTERN VALUE ruby_errinfo;
924 #endif
925 #endif
926     VALUE eclass;
927     VALUE einfo;
928     char buff[BUFSIZ];
929 
930 #define TAG_RETURN	0x1
931 #define TAG_BREAK	0x2
932 #define TAG_NEXT	0x3
933 #define TAG_RETRY	0x4
934 #define TAG_REDO	0x5
935 #define TAG_RAISE	0x6
936 #define TAG_THROW	0x7
937 #define TAG_FATAL	0x8
938 #define TAG_MASK	0xf
939 
940     switch (state)
941     {
942     case TAG_RETURN:
943 	EMSG(_("E267: unexpected return"));
944 	break;
945     case TAG_NEXT:
946 	EMSG(_("E268: unexpected next"));
947 	break;
948     case TAG_BREAK:
949 	EMSG(_("E269: unexpected break"));
950 	break;
951     case TAG_REDO:
952 	EMSG(_("E270: unexpected redo"));
953 	break;
954     case TAG_RETRY:
955 	EMSG(_("E271: retry outside of rescue clause"));
956 	break;
957     case TAG_RAISE:
958     case TAG_FATAL:
959 #ifdef RUBY19_OR_LATER
960 	eclass = CLASS_OF(rb_errinfo());
961 	einfo = rb_obj_as_string(rb_errinfo());
962 #else
963 	eclass = CLASS_OF(ruby_errinfo);
964 	einfo = rb_obj_as_string(ruby_errinfo);
965 #endif
966 	if (eclass == rb_eRuntimeError && RSTRING_LEN(einfo) == 0)
967 	{
968 	    EMSG(_("E272: unhandled exception"));
969 	}
970 	else
971 	{
972 	    VALUE epath;
973 	    char *p;
974 
975 	    epath = rb_class_path(eclass);
976 	    vim_snprintf(buff, BUFSIZ, "%s: %s",
977 		     RSTRING_PTR(epath), RSTRING_PTR(einfo));
978 	    p = strchr(buff, '\n');
979 	    if (p) *p = '\0';
980 	    EMSG(buff);
981 	}
982 	break;
983     default:
984 	vim_snprintf(buff, BUFSIZ, _("E273: unknown longjmp status %d"), state);
985 	EMSG(buff);
986 	break;
987     }
988 }
989 
990 static VALUE vim_message(VALUE self UNUSED, VALUE str)
991 {
992     char *buff, *p;
993 
994     str = rb_obj_as_string(str);
995     if (RSTRING_LEN(str) > 0)
996     {
997 	/* Only do this when the string isn't empty, alloc(0) causes trouble. */
998 	buff = ALLOCA_N(char, RSTRING_LEN(str) + 1);
999 	strcpy(buff, RSTRING_PTR(str));
1000 	p = strchr(buff, '\n');
1001 	if (p) *p = '\0';
1002 	MSG(buff);
1003     }
1004     else
1005     {
1006 	MSG("");
1007     }
1008     return Qnil;
1009 }
1010 
1011 static VALUE vim_set_option(VALUE self UNUSED, VALUE str)
1012 {
1013     do_set((char_u *)StringValuePtr(str), 0);
1014     update_screen(NOT_VALID);
1015     return Qnil;
1016 }
1017 
1018 static VALUE vim_command(VALUE self UNUSED, VALUE str)
1019 {
1020     do_cmdline_cmd((char_u *)StringValuePtr(str));
1021     return Qnil;
1022 }
1023 
1024 #ifdef FEAT_EVAL
1025 static VALUE vim_to_ruby(typval_T *tv)
1026 {
1027     VALUE result = Qnil;
1028 
1029     if (tv->v_type == VAR_STRING)
1030     {
1031 	result = rb_str_new2(tv->vval.v_string == NULL
1032 					  ? "" : (char *)(tv->vval.v_string));
1033     }
1034     else if (tv->v_type == VAR_NUMBER)
1035     {
1036 	result = INT2NUM(tv->vval.v_number);
1037     }
1038 # ifdef FEAT_FLOAT
1039     else if (tv->v_type == VAR_FLOAT)
1040     {
1041 	result = rb_float_new(tv->vval.v_float);
1042     }
1043 # endif
1044     else if (tv->v_type == VAR_LIST)
1045     {
1046 	list_T      *list = tv->vval.v_list;
1047 	listitem_T  *curr;
1048 
1049 	result = rb_ary_new();
1050 
1051 	if (list != NULL)
1052 	{
1053 	    for (curr = list->lv_first; curr != NULL; curr = curr->li_next)
1054 	    {
1055 		rb_ary_push(result, vim_to_ruby(&curr->li_tv));
1056 	    }
1057 	}
1058     }
1059     else if (tv->v_type == VAR_DICT)
1060     {
1061 	result = rb_hash_new();
1062 
1063 	if (tv->vval.v_dict != NULL)
1064 	{
1065 	    hashtab_T   *ht = &tv->vval.v_dict->dv_hashtab;
1066 	    long_u      todo = ht->ht_used;
1067 	    hashitem_T  *hi;
1068 	    dictitem_T  *di;
1069 
1070 	    for (hi = ht->ht_array; todo > 0; ++hi)
1071 	    {
1072 		if (!HASHITEM_EMPTY(hi))
1073 		{
1074 		    --todo;
1075 
1076 		    di = dict_lookup(hi);
1077 		    rb_hash_aset(result, rb_str_new2((char *)hi->hi_key),
1078 						     vim_to_ruby(&di->di_tv));
1079 		}
1080 	    }
1081 	}
1082     }
1083     else if (tv->v_type == VAR_SPECIAL)
1084     {
1085 	if (tv->vval.v_number <= VVAL_TRUE)
1086 	    result = INT2NUM(tv->vval.v_number);
1087     } /* else return Qnil; */
1088 
1089     return result;
1090 }
1091 #endif
1092 
1093 static VALUE vim_evaluate(VALUE self UNUSED, VALUE str)
1094 {
1095 #ifdef FEAT_EVAL
1096     typval_T    *tv;
1097     VALUE       result;
1098 
1099     tv = eval_expr((char_u *)StringValuePtr(str), NULL);
1100     if (tv == NULL)
1101     {
1102 	return Qnil;
1103     }
1104     result = vim_to_ruby(tv);
1105 
1106     free_tv(tv);
1107 
1108     return result;
1109 #else
1110     return Qnil;
1111 #endif
1112 }
1113 
1114 #ifdef USE_TYPEDDATA
1115 static size_t buffer_dsize(const void *buf);
1116 
1117 static const rb_data_type_t buffer_type = {
1118     "vim_buffer",
1119     {0, 0, buffer_dsize, {0, 0}},
1120     0, 0,
1121 # ifdef RUBY_TYPED_FREE_IMMEDIATELY
1122     0,
1123 # endif
1124 };
1125 
1126 static size_t buffer_dsize(const void *buf UNUSED)
1127 {
1128     return sizeof(buf_T);
1129 }
1130 #endif
1131 
1132 static VALUE buffer_new(buf_T *buf)
1133 {
1134     if (buf->b_ruby_ref)
1135     {
1136 	return (VALUE) buf->b_ruby_ref;
1137     }
1138     else
1139     {
1140 #ifdef USE_TYPEDDATA
1141 	VALUE obj = TypedData_Wrap_Struct(cBuffer, &buffer_type, buf);
1142 #else
1143 	VALUE obj = Data_Wrap_Struct(cBuffer, 0, 0, buf);
1144 #endif
1145 	buf->b_ruby_ref = (void *) obj;
1146 	rb_hash_aset(objtbl, rb_obj_id(obj), obj);
1147 	return obj;
1148     }
1149 }
1150 
1151 static buf_T *get_buf(VALUE obj)
1152 {
1153     buf_T *buf;
1154 
1155 #ifdef USE_TYPEDDATA
1156     TypedData_Get_Struct(obj, buf_T, &buffer_type, buf);
1157 #else
1158     Data_Get_Struct(obj, buf_T, buf);
1159 #endif
1160     if (buf == NULL)
1161 	rb_raise(eDeletedBufferError, "attempt to refer to deleted buffer");
1162     return buf;
1163 }
1164 
1165 static VALUE buffer_s_current(void)
1166 {
1167     return buffer_new(curbuf);
1168 }
1169 
1170 static VALUE buffer_s_count(void)
1171 {
1172     buf_T *b;
1173     int n = 0;
1174 
1175     FOR_ALL_BUFFERS(b)
1176     {
1177 	/*  Deleted buffers should not be counted
1178 	 *    SegPhault - 01/07/05 */
1179 	if (b->b_p_bl)
1180 	    n++;
1181     }
1182 
1183     return INT2NUM(n);
1184 }
1185 
1186 static VALUE buffer_s_aref(VALUE self UNUSED, VALUE num)
1187 {
1188     buf_T *b;
1189     int n = NUM2INT(num);
1190 
1191     FOR_ALL_BUFFERS(b)
1192     {
1193 	/*  Deleted buffers should not be counted
1194 	 *    SegPhault - 01/07/05 */
1195 	if (!b->b_p_bl)
1196 	    continue;
1197 
1198 	if (n == 0)
1199 	    return buffer_new(b);
1200 
1201 	n--;
1202     }
1203     return Qnil;
1204 }
1205 
1206 static VALUE buffer_name(VALUE self)
1207 {
1208     buf_T *buf = get_buf(self);
1209 
1210     return buf->b_ffname ? rb_str_new2((char *)buf->b_ffname) : Qnil;
1211 }
1212 
1213 static VALUE buffer_number(VALUE self)
1214 {
1215     buf_T *buf = get_buf(self);
1216 
1217     return INT2NUM(buf->b_fnum);
1218 }
1219 
1220 static VALUE buffer_count(VALUE self)
1221 {
1222     buf_T *buf = get_buf(self);
1223 
1224     return INT2NUM(buf->b_ml.ml_line_count);
1225 }
1226 
1227 static VALUE get_buffer_line(buf_T *buf, linenr_T n)
1228 {
1229     if (n <= 0 || n > buf->b_ml.ml_line_count)
1230 	rb_raise(rb_eIndexError, "line number %ld out of range", (long)n);
1231     return vim_str2rb_enc_str((char *)ml_get_buf(buf, n, FALSE));
1232 }
1233 
1234 static VALUE buffer_aref(VALUE self, VALUE num)
1235 {
1236     buf_T *buf = get_buf(self);
1237 
1238     if (buf != NULL)
1239 	return get_buffer_line(buf, (linenr_T)NUM2LONG(num));
1240     return Qnil; /* For stop warning */
1241 }
1242 
1243 static VALUE set_buffer_line(buf_T *buf, linenr_T n, VALUE str)
1244 {
1245     char	*line = StringValuePtr(str);
1246     aco_save_T	aco;
1247 
1248     if (n > 0 && n <= buf->b_ml.ml_line_count && line != NULL)
1249     {
1250 	/* set curwin/curbuf for "buf" and save some things */
1251 	aucmd_prepbuf(&aco, buf);
1252 
1253 	if (u_savesub(n) == OK)
1254 	{
1255 	    ml_replace(n, (char_u *)line, TRUE);
1256 	    changed();
1257 #ifdef SYNTAX_HL
1258 	    syn_changed(n); /* recompute syntax hl. for this line */
1259 #endif
1260 	}
1261 
1262 	/* restore curwin/curbuf and a few other things */
1263 	aucmd_restbuf(&aco);
1264 	/* Careful: autocommands may have made "buf" invalid! */
1265 
1266 	update_curbuf(NOT_VALID);
1267     }
1268     else
1269     {
1270 	rb_raise(rb_eIndexError, "line number %ld out of range", (long)n);
1271     }
1272     return str;
1273 }
1274 
1275 static VALUE buffer_aset(VALUE self, VALUE num, VALUE str)
1276 {
1277     buf_T *buf = get_buf(self);
1278 
1279     if (buf != NULL)
1280 	return set_buffer_line(buf, (linenr_T)NUM2LONG(num), str);
1281     return str;
1282 }
1283 
1284 static VALUE buffer_delete(VALUE self, VALUE num)
1285 {
1286     buf_T	*buf = get_buf(self);
1287     long	n = NUM2LONG(num);
1288     aco_save_T	aco;
1289 
1290     if (n > 0 && n <= buf->b_ml.ml_line_count)
1291     {
1292 	/* set curwin/curbuf for "buf" and save some things */
1293 	aucmd_prepbuf(&aco, buf);
1294 
1295 	if (u_savedel(n, 1) == OK)
1296 	{
1297 	    ml_delete(n, 0);
1298 
1299 	    /* Changes to non-active buffers should properly refresh
1300 	     *   SegPhault - 01/09/05 */
1301 	    deleted_lines_mark(n, 1L);
1302 
1303 	    changed();
1304 	}
1305 
1306 	/* restore curwin/curbuf and a few other things */
1307 	aucmd_restbuf(&aco);
1308 	/* Careful: autocommands may have made "buf" invalid! */
1309 
1310 	update_curbuf(NOT_VALID);
1311     }
1312     else
1313     {
1314 	rb_raise(rb_eIndexError, "line number %ld out of range", n);
1315     }
1316     return Qnil;
1317 }
1318 
1319 static VALUE buffer_append(VALUE self, VALUE num, VALUE str)
1320 {
1321     buf_T	*buf = get_buf(self);
1322     char	*line = StringValuePtr(str);
1323     long	n = NUM2LONG(num);
1324     aco_save_T	aco;
1325 
1326     if (line == NULL)
1327     {
1328 	rb_raise(rb_eIndexError, "NULL line");
1329     }
1330     else if (n >= 0 && n <= buf->b_ml.ml_line_count)
1331     {
1332 	/* set curwin/curbuf for "buf" and save some things */
1333 	aucmd_prepbuf(&aco, buf);
1334 
1335 	if (u_inssub(n + 1) == OK)
1336 	{
1337 	    ml_append(n, (char_u *) line, (colnr_T) 0, FALSE);
1338 
1339 	    /*  Changes to non-active buffers should properly refresh screen
1340 	     *    SegPhault - 12/20/04 */
1341 	    appended_lines_mark(n, 1L);
1342 
1343 	    changed();
1344 	}
1345 
1346 	/* restore curwin/curbuf and a few other things */
1347 	aucmd_restbuf(&aco);
1348 	/* Careful: autocommands may have made "buf" invalid! */
1349 
1350 	update_curbuf(NOT_VALID);
1351     }
1352     else
1353     {
1354 	rb_raise(rb_eIndexError, "line number %ld out of range", n);
1355     }
1356     return str;
1357 }
1358 
1359 #ifdef USE_TYPEDDATA
1360 static size_t window_dsize(const void *buf);
1361 
1362 static const rb_data_type_t window_type = {
1363     "vim_window",
1364     {0, 0, window_dsize, {0, 0}},
1365     0, 0,
1366 # ifdef RUBY_TYPED_FREE_IMMEDIATELY
1367     0,
1368 # endif
1369 };
1370 
1371 static size_t window_dsize(const void *win UNUSED)
1372 {
1373     return sizeof(win_T);
1374 }
1375 #endif
1376 
1377 static VALUE window_new(win_T *win)
1378 {
1379     if (win->w_ruby_ref)
1380     {
1381 	return (VALUE) win->w_ruby_ref;
1382     }
1383     else
1384     {
1385 #ifdef USE_TYPEDDATA
1386 	VALUE obj = TypedData_Wrap_Struct(cVimWindow, &window_type, win);
1387 #else
1388 	VALUE obj = Data_Wrap_Struct(cVimWindow, 0, 0, win);
1389 #endif
1390 	win->w_ruby_ref = (void *) obj;
1391 	rb_hash_aset(objtbl, rb_obj_id(obj), obj);
1392 	return obj;
1393     }
1394 }
1395 
1396 static win_T *get_win(VALUE obj)
1397 {
1398     win_T *win;
1399 
1400 #ifdef USE_TYPEDDATA
1401     TypedData_Get_Struct(obj, win_T, &window_type, win);
1402 #else
1403     Data_Get_Struct(obj, win_T, win);
1404 #endif
1405     if (win == NULL)
1406 	rb_raise(eDeletedWindowError, "attempt to refer to deleted window");
1407     return win;
1408 }
1409 
1410 static VALUE window_s_current(void)
1411 {
1412     return window_new(curwin);
1413 }
1414 
1415 /*
1416  * Added line manipulation functions
1417  *    SegPhault - 03/07/05
1418  */
1419 static VALUE line_s_current(void)
1420 {
1421     return get_buffer_line(curbuf, curwin->w_cursor.lnum);
1422 }
1423 
1424 static VALUE set_current_line(VALUE self UNUSED, VALUE str)
1425 {
1426     return set_buffer_line(curbuf, curwin->w_cursor.lnum, str);
1427 }
1428 
1429 static VALUE current_line_number(void)
1430 {
1431     return INT2FIX((int)curwin->w_cursor.lnum);
1432 }
1433 
1434 
1435 
1436 static VALUE window_s_count(void)
1437 {
1438     win_T	*w;
1439     int n = 0;
1440 
1441     FOR_ALL_WINDOWS(w)
1442 	n++;
1443     return INT2NUM(n);
1444 }
1445 
1446 static VALUE window_s_aref(VALUE self UNUSED, VALUE num)
1447 {
1448     win_T *w;
1449     int n = NUM2INT(num);
1450 
1451     for (w = firstwin; w != NULL; w = w->w_next, --n)
1452 	if (n == 0)
1453 	    return window_new(w);
1454     return Qnil;
1455 }
1456 
1457 static VALUE window_buffer(VALUE self)
1458 {
1459     win_T *win = get_win(self);
1460 
1461     return buffer_new(win->w_buffer);
1462 }
1463 
1464 static VALUE window_height(VALUE self)
1465 {
1466     win_T *win = get_win(self);
1467 
1468     return INT2NUM(win->w_height);
1469 }
1470 
1471 static VALUE window_set_height(VALUE self, VALUE height)
1472 {
1473     win_T *win = get_win(self);
1474     win_T *savewin = curwin;
1475 
1476     curwin = win;
1477     win_setheight(NUM2INT(height));
1478     curwin = savewin;
1479     return height;
1480 }
1481 
1482 static VALUE window_width(VALUE self UNUSED)
1483 {
1484     return INT2NUM(get_win(self)->w_width);
1485 }
1486 
1487 static VALUE window_set_width(VALUE self UNUSED, VALUE width)
1488 {
1489     win_T *win = get_win(self);
1490     win_T *savewin = curwin;
1491 
1492     curwin = win;
1493     win_setwidth(NUM2INT(width));
1494     curwin = savewin;
1495     return width;
1496 }
1497 
1498 static VALUE window_cursor(VALUE self)
1499 {
1500     win_T *win = get_win(self);
1501 
1502     return rb_assoc_new(INT2NUM(win->w_cursor.lnum), INT2NUM(win->w_cursor.col));
1503 }
1504 
1505 static VALUE window_set_cursor(VALUE self, VALUE pos)
1506 {
1507     VALUE lnum, col;
1508     win_T *win = get_win(self);
1509 
1510     Check_Type(pos, T_ARRAY);
1511     if (RARRAY_LEN(pos) != 2)
1512 	rb_raise(rb_eArgError, "array length must be 2");
1513     lnum = RARRAY_PTR(pos)[0];
1514     col = RARRAY_PTR(pos)[1];
1515     win->w_cursor.lnum = NUM2LONG(lnum);
1516     win->w_cursor.col = NUM2UINT(col);
1517     check_cursor();		    /* put cursor on an existing line */
1518     update_screen(NOT_VALID);
1519     return Qnil;
1520 }
1521 
1522 static VALUE f_nop(VALUE self UNUSED)
1523 {
1524     return Qnil;
1525 }
1526 
1527 static VALUE f_p(int argc, VALUE *argv, VALUE self UNUSED)
1528 {
1529     int i;
1530     VALUE str = rb_str_new("", 0);
1531 
1532     for (i = 0; i < argc; i++)
1533     {
1534 	if (i > 0) rb_str_cat(str, ", ", 2);
1535 	rb_str_concat(str, rb_inspect(argv[i]));
1536     }
1537     MSG(RSTRING_PTR(str));
1538     return Qnil;
1539 }
1540 
1541 static void ruby_io_init(void)
1542 {
1543 #ifndef DYNAMIC_RUBY
1544     RUBYEXTERN VALUE rb_stdout;
1545 #endif
1546 
1547     rb_stdout = rb_obj_alloc(rb_cObject);
1548     rb_define_singleton_method(rb_stdout, "write", vim_message, 1);
1549     rb_define_singleton_method(rb_stdout, "flush", f_nop, 0);
1550     rb_define_global_function("p", f_p, -1);
1551 }
1552 
1553 static void ruby_vim_init(void)
1554 {
1555     objtbl = rb_hash_new();
1556     rb_global_variable(&objtbl);
1557 
1558     /* The Vim module used to be called "VIM", but "Vim" is better.  Make an
1559      * alias "VIM" for backwards compatibility. */
1560     mVIM = rb_define_module("Vim");
1561     rb_define_const(rb_cObject, "VIM", mVIM);
1562     rb_define_const(mVIM, "VERSION_MAJOR", INT2NUM(VIM_VERSION_MAJOR));
1563     rb_define_const(mVIM, "VERSION_MINOR", INT2NUM(VIM_VERSION_MINOR));
1564     rb_define_const(mVIM, "VERSION_BUILD", INT2NUM(VIM_VERSION_BUILD));
1565     rb_define_const(mVIM, "VERSION_PATCHLEVEL", INT2NUM(VIM_VERSION_PATCHLEVEL));
1566     rb_define_const(mVIM, "VERSION_SHORT", rb_str_new2(VIM_VERSION_SHORT));
1567     rb_define_const(mVIM, "VERSION_MEDIUM", rb_str_new2(VIM_VERSION_MEDIUM));
1568     rb_define_const(mVIM, "VERSION_LONG", rb_str_new2(VIM_VERSION_LONG));
1569     rb_define_const(mVIM, "VERSION_LONG_DATE", rb_str_new2(VIM_VERSION_LONG_DATE));
1570     rb_define_module_function(mVIM, "message", vim_message, 1);
1571     rb_define_module_function(mVIM, "set_option", vim_set_option, 1);
1572     rb_define_module_function(mVIM, "command", vim_command, 1);
1573     rb_define_module_function(mVIM, "evaluate", vim_evaluate, 1);
1574 
1575     eDeletedBufferError = rb_define_class_under(mVIM, "DeletedBufferError",
1576 						rb_eStandardError);
1577     eDeletedWindowError = rb_define_class_under(mVIM, "DeletedWindowError",
1578 						rb_eStandardError);
1579 
1580     cBuffer = rb_define_class_under(mVIM, "Buffer", rb_cObject);
1581     rb_define_singleton_method(cBuffer, "current", buffer_s_current, 0);
1582     rb_define_singleton_method(cBuffer, "count", buffer_s_count, 0);
1583     rb_define_singleton_method(cBuffer, "[]", buffer_s_aref, 1);
1584     rb_define_method(cBuffer, "name", buffer_name, 0);
1585     rb_define_method(cBuffer, "number", buffer_number, 0);
1586     rb_define_method(cBuffer, "count", buffer_count, 0);
1587     rb_define_method(cBuffer, "length", buffer_count, 0);
1588     rb_define_method(cBuffer, "[]", buffer_aref, 1);
1589     rb_define_method(cBuffer, "[]=", buffer_aset, 2);
1590     rb_define_method(cBuffer, "delete", buffer_delete, 1);
1591     rb_define_method(cBuffer, "append", buffer_append, 2);
1592 
1593     /* Added line manipulation functions
1594      *   SegPhault - 03/07/05 */
1595     rb_define_method(cBuffer, "line_number", current_line_number, 0);
1596     rb_define_method(cBuffer, "line", line_s_current, 0);
1597     rb_define_method(cBuffer, "line=", set_current_line, 1);
1598 
1599 
1600     cVimWindow = rb_define_class_under(mVIM, "Window", rb_cObject);
1601     rb_define_singleton_method(cVimWindow, "current", window_s_current, 0);
1602     rb_define_singleton_method(cVimWindow, "count", window_s_count, 0);
1603     rb_define_singleton_method(cVimWindow, "[]", window_s_aref, 1);
1604     rb_define_method(cVimWindow, "buffer", window_buffer, 0);
1605     rb_define_method(cVimWindow, "height", window_height, 0);
1606     rb_define_method(cVimWindow, "height=", window_set_height, 1);
1607     rb_define_method(cVimWindow, "width", window_width, 0);
1608     rb_define_method(cVimWindow, "width=", window_set_width, 1);
1609     rb_define_method(cVimWindow, "cursor", window_cursor, 0);
1610     rb_define_method(cVimWindow, "cursor=", window_set_cursor, 1);
1611 
1612     rb_define_virtual_variable("$curbuf", buffer_s_current, 0);
1613     rb_define_virtual_variable("$curwin", window_s_current, 0);
1614 }
1615 
1616 void vim_ruby_init(void *stack_start)
1617 {
1618     /* should get machine stack start address early in main function */
1619     ruby_stack_start = stack_start;
1620 }
1621