xref: /vim-8.2.3635/src/if_ruby.c (revision f42dd3c3)
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_UNIX) || defined(macintosh)
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_load_protect			dll_rb_load_protect
255 # ifndef RUBY19_OR_LATER
256 #  define rb_num2long			dll_rb_num2long
257 # endif
258 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER <= 19
259 #  define rb_num2ulong			dll_rb_num2ulong
260 # endif
261 # define rb_obj_alloc			dll_rb_obj_alloc
262 # define rb_obj_as_string		dll_rb_obj_as_string
263 # define rb_obj_id			dll_rb_obj_id
264 # define rb_raise			dll_rb_raise
265 # define rb_str_cat			dll_rb_str_cat
266 # define rb_str_concat			dll_rb_str_concat
267 # undef rb_str_new
268 # define rb_str_new			dll_rb_str_new
269 # ifdef rb_str_new2
270 /* Ruby may #define rb_str_new2 to use rb_str_new_cstr. */
271 #  define need_rb_str_new_cstr 1
272 /* Ruby's headers #define rb_str_new_cstr to make use of GCC's
273  * __builtin_constant_p extension. */
274 #  undef rb_str_new_cstr
275 #  define rb_str_new_cstr		dll_rb_str_new_cstr
276 # else
277 #  define rb_str_new2			dll_rb_str_new2
278 # endif
279 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
280 #  define rb_string_value		dll_rb_string_value
281 #  define rb_string_value_ptr		dll_rb_string_value_ptr
282 #  define rb_float_new			dll_rb_float_new
283 #  define rb_ary_new			dll_rb_ary_new
284 #  define rb_ary_push			dll_rb_ary_push
285 #  if defined(RUBY19_OR_LATER) || defined(RUBY_INIT_STACK)
286 #   ifdef __ia64
287 #    define rb_ia64_bsp			dll_rb_ia64_bsp
288 #    undef ruby_init_stack
289 #    define ruby_init_stack(addr)	dll_ruby_init_stack((addr), rb_ia64_bsp())
290 #   else
291 #    define ruby_init_stack		dll_ruby_init_stack
292 #   endif
293 #  endif
294 # else
295 #  define rb_str2cstr			dll_rb_str2cstr
296 # endif
297 # ifdef RUBY19_OR_LATER
298 #  define rb_errinfo			dll_rb_errinfo
299 # else
300 #  define ruby_errinfo			(*dll_ruby_errinfo)
301 # endif
302 # define ruby_init			dll_ruby_init
303 # define ruby_init_loadpath		dll_ruby_init_loadpath
304 # ifdef WIN3264
305 #  define NtInitialize			dll_NtInitialize
306 #  define ruby_sysinit			dll_ruby_sysinit
307 #  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
308 #   define rb_w32_snprintf		dll_rb_w32_snprintf
309 #  endif
310 # endif
311 
312 # ifdef RUBY19_OR_LATER
313 #  define ruby_script			dll_ruby_script
314 #  define rb_enc_find_index		dll_rb_enc_find_index
315 #  define rb_enc_find			dll_rb_enc_find
316 #  undef rb_enc_str_new
317 #  define rb_enc_str_new		dll_rb_enc_str_new
318 #  define rb_sprintf			dll_rb_sprintf
319 #  define rb_require			dll_rb_require
320 #  define ruby_options			dll_ruby_options
321 # endif
322 
323 /*
324  * Pointers for dynamic link
325  */
326 static VALUE (*dll_rb_assoc_new) (VALUE, VALUE);
327 VALUE *dll_rb_cFalseClass;
328 VALUE *dll_rb_cFixnum;
329 # if defined(USE_RUBY_INTEGER)
330 VALUE *dll_rb_cInteger;
331 # endif
332 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 20
333 VALUE *dll_rb_cFloat;
334 # endif
335 VALUE *dll_rb_cNilClass;
336 static VALUE *dll_rb_cObject;
337 VALUE *dll_rb_cSymbol;
338 VALUE *dll_rb_cTrueClass;
339 static void (*dll_rb_check_type) (VALUE,int);
340 # ifdef USE_TYPEDDATA
341 static void *(*dll_rb_check_typeddata) (VALUE,const rb_data_type_t *);
342 # endif
343 static VALUE (*dll_rb_class_path) (VALUE);
344 # ifdef USE_TYPEDDATA
345 #  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 23
346 static VALUE (*dll_rb_data_typed_object_wrap) (VALUE, void*, const rb_data_type_t *);
347 #  else
348 static VALUE (*dll_rb_data_typed_object_alloc) (VALUE, void*, const rb_data_type_t *);
349 #  endif
350 # else
351 static VALUE (*dll_rb_data_object_alloc) (VALUE, void*, RUBY_DATA_FUNC, RUBY_DATA_FUNC);
352 # endif
353 static VALUE (*dll_rb_define_class_under) (VALUE, const char*, VALUE);
354 static void (*dll_rb_define_const) (VALUE,const char*,VALUE);
355 static void (*dll_rb_define_global_function) (const char*,VALUE(*)(),int);
356 static void (*dll_rb_define_method) (VALUE,const char*,VALUE(*)(),int);
357 static VALUE (*dll_rb_define_module) (const char*);
358 static void (*dll_rb_define_module_function) (VALUE,const char*,VALUE(*)(),int);
359 static void (*dll_rb_define_singleton_method) (VALUE,const char*,VALUE(*)(),int);
360 static void (*dll_rb_define_virtual_variable) (const char*,VALUE(*)(),void(*)());
361 static VALUE *dll_rb_stdout;
362 static VALUE *dll_rb_eArgError;
363 static VALUE *dll_rb_eIndexError;
364 static VALUE *dll_rb_eRuntimeError;
365 static VALUE *dll_rb_eStandardError;
366 static VALUE (*dll_rb_eval_string_protect) (const char*, int*);
367 static void (*dll_rb_global_variable) (VALUE*);
368 static VALUE (*dll_rb_hash_aset) (VALUE, VALUE, VALUE);
369 static VALUE (*dll_rb_hash_new) (void);
370 static VALUE (*dll_rb_inspect) (VALUE);
371 static VALUE (*dll_rb_int2inum) (long);
372 # if VIM_SIZEOF_INT < VIM_SIZEOF_LONG /* 64 bits only */
373 static long (*dll_rb_fix2int) (VALUE);
374 static long (*dll_rb_num2int) (VALUE);
375 static unsigned long (*dll_rb_num2uint) (VALUE);
376 # endif
377 static VALUE (*dll_rb_lastline_get) (void);
378 static void (*dll_rb_lastline_set) (VALUE);
379 static void (*dll_rb_load_protect) (VALUE, int, int*);
380 static long (*dll_rb_num2long) (VALUE);
381 static unsigned long (*dll_rb_num2ulong) (VALUE);
382 static VALUE (*dll_rb_obj_alloc) (VALUE);
383 static VALUE (*dll_rb_obj_as_string) (VALUE);
384 static VALUE (*dll_rb_obj_id) (VALUE);
385 static void (*dll_rb_raise) (VALUE, const char*, ...);
386 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
387 static VALUE (*dll_rb_string_value) (volatile VALUE*);
388 # else
389 static char *(*dll_rb_str2cstr) (VALUE,int*);
390 # endif
391 static VALUE (*dll_rb_str_cat) (VALUE, const char*, long);
392 static VALUE (*dll_rb_str_concat) (VALUE, VALUE);
393 static VALUE (*dll_rb_str_new) (const char*, long);
394 # ifdef need_rb_str_new_cstr
395 /* Ruby may #define rb_str_new2 to use rb_str_new_cstr. */
396 static VALUE (*dll_rb_str_new_cstr) (const char*);
397 # else
398 static VALUE (*dll_rb_str_new2) (const char*);
399 # endif
400 # ifdef RUBY19_OR_LATER
401 static VALUE (*dll_rb_errinfo) (void);
402 # else
403 static VALUE *dll_ruby_errinfo;
404 # endif
405 static void (*dll_ruby_init) (void);
406 static void (*dll_ruby_init_loadpath) (void);
407 # ifdef WIN3264
408 static void (*dll_NtInitialize) (int*, char***);
409 static void (*dll_ruby_sysinit) (int*, char***);
410 #  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
411 static int (*dll_rb_w32_snprintf)(char*, size_t, const char*, ...);
412 #  endif
413 # endif
414 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
415 static char * (*dll_rb_string_value_ptr) (volatile VALUE*);
416 static VALUE (*dll_rb_float_new) (double);
417 static VALUE (*dll_rb_ary_new) (void);
418 static VALUE (*dll_rb_ary_push) (VALUE, VALUE);
419 #  if defined(RUBY19_OR_LATER) || defined(RUBY_INIT_STACK)
420 #   ifdef __ia64
421 static void * (*dll_rb_ia64_bsp) (void);
422 static void (*dll_ruby_init_stack)(VALUE*, void*);
423 #   else
424 static void (*dll_ruby_init_stack)(VALUE*);
425 #   endif
426 #  endif
427 # endif
428 # ifdef RUBY19_OR_LATER
429 static VALUE (*dll_rb_int2big)(SIGNED_VALUE);
430 # endif
431 
432 # ifdef RUBY19_OR_LATER
433 static void (*dll_ruby_script) (const char*);
434 static int (*dll_rb_enc_find_index) (const char*);
435 static rb_encoding* (*dll_rb_enc_find) (const char*);
436 static VALUE (*dll_rb_enc_str_new) (const char*, long, rb_encoding*);
437 static VALUE (*dll_rb_sprintf) (const char*, ...);
438 static VALUE (*dll_rb_require) (const char*);
439 static void* (*ruby_options)(int, char**);
440 # endif
441 
442 # if defined(USE_RGENGC) && USE_RGENGC
443 #  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER == 21
444 static void (*dll_rb_gc_writebarrier_unprotect_promoted)(VALUE);
445 #  else
446 static void (*dll_rb_gc_writebarrier_unprotect)(VALUE obj);
447 #  endif
448 # endif
449 
450 # if defined(RUBY19_OR_LATER) && !defined(PROTO)
451 #  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 22
452 long rb_num2long_stub(VALUE x)
453 #  else
454 SIGNED_VALUE rb_num2long_stub(VALUE x)
455 #  endif
456 {
457     return dll_rb_num2long(x);
458 }
459 VALUE rb_int2big_stub(SIGNED_VALUE x)
460 {
461     return dll_rb_int2big(x);
462 }
463 #  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 19 \
464 	&& VIM_SIZEOF_INT < VIM_SIZEOF_LONG
465 long rb_fix2int_stub(VALUE x)
466 {
467     return dll_rb_fix2int(x);
468 }
469 long rb_num2int_stub(VALUE x)
470 {
471     return dll_rb_num2int(x);
472 }
473 #  endif
474 #  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 20
475 VALUE
476 rb_float_new_in_heap(double d)
477 {
478     return dll_rb_float_new(d);
479 }
480 #   if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 22
481 unsigned long rb_num2ulong(VALUE x)
482 #   else
483 VALUE rb_num2ulong(VALUE x)
484 #   endif
485 {
486     return (long)RSHIFT((SIGNED_VALUE)(x),1);
487 }
488 #  endif
489 # endif
490 
491    /* Do not generate a prototype here, VALUE isn't always defined. */
492 # if defined(USE_RGENGC) && USE_RGENGC && !defined(PROTO)
493 #  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER == 21
494 void rb_gc_writebarrier_unprotect_promoted_stub(VALUE obj)
495 {
496     dll_rb_gc_writebarrier_unprotect_promoted(obj);
497 }
498 #  else
499 void rb_gc_writebarrier_unprotect_stub(VALUE obj)
500 {
501     dll_rb_gc_writebarrier_unprotect(obj);
502 }
503 #  endif
504 # endif
505 
506 static HINSTANCE hinstRuby = NULL; /* Instance of ruby.dll */
507 
508 /*
509  * Table of name to function pointer of ruby.
510  */
511 static struct
512 {
513     char *name;
514     RUBY_PROC *ptr;
515 } ruby_funcname_table[] =
516 {
517     {"rb_assoc_new", (RUBY_PROC*)&dll_rb_assoc_new},
518     {"rb_cFalseClass", (RUBY_PROC*)&dll_rb_cFalseClass},
519 # if defined(USE_RUBY_INTEGER)
520     {"rb_cInteger", (RUBY_PROC*)&dll_rb_cInteger},
521 # else
522     {"rb_cFixnum", (RUBY_PROC*)&dll_rb_cFixnum},
523 # endif
524 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 20
525     {"rb_cFloat", (RUBY_PROC*)&dll_rb_cFloat},
526 # endif
527     {"rb_cNilClass", (RUBY_PROC*)&dll_rb_cNilClass},
528     {"rb_cObject", (RUBY_PROC*)&dll_rb_cObject},
529     {"rb_cSymbol", (RUBY_PROC*)&dll_rb_cSymbol},
530     {"rb_cTrueClass", (RUBY_PROC*)&dll_rb_cTrueClass},
531     {"rb_check_type", (RUBY_PROC*)&dll_rb_check_type},
532 # ifdef USE_TYPEDDATA
533     {"rb_check_typeddata", (RUBY_PROC*)&dll_rb_check_typeddata},
534 # endif
535     {"rb_class_path", (RUBY_PROC*)&dll_rb_class_path},
536 # ifdef USE_TYPEDDATA
537 #  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 23
538     {"rb_data_typed_object_wrap", (RUBY_PROC*)&dll_rb_data_typed_object_wrap},
539 #  else
540     {"rb_data_typed_object_alloc", (RUBY_PROC*)&dll_rb_data_typed_object_alloc},
541 #  endif
542 # else
543     {"rb_data_object_alloc", (RUBY_PROC*)&dll_rb_data_object_alloc},
544 # endif
545     {"rb_define_class_under", (RUBY_PROC*)&dll_rb_define_class_under},
546     {"rb_define_const", (RUBY_PROC*)&dll_rb_define_const},
547     {"rb_define_global_function", (RUBY_PROC*)&dll_rb_define_global_function},
548     {"rb_define_method", (RUBY_PROC*)&dll_rb_define_method},
549     {"rb_define_module", (RUBY_PROC*)&dll_rb_define_module},
550     {"rb_define_module_function", (RUBY_PROC*)&dll_rb_define_module_function},
551     {"rb_define_singleton_method", (RUBY_PROC*)&dll_rb_define_singleton_method},
552     {"rb_define_virtual_variable", (RUBY_PROC*)&dll_rb_define_virtual_variable},
553     {"rb_stdout", (RUBY_PROC*)&dll_rb_stdout},
554     {"rb_eArgError", (RUBY_PROC*)&dll_rb_eArgError},
555     {"rb_eIndexError", (RUBY_PROC*)&dll_rb_eIndexError},
556     {"rb_eRuntimeError", (RUBY_PROC*)&dll_rb_eRuntimeError},
557     {"rb_eStandardError", (RUBY_PROC*)&dll_rb_eStandardError},
558     {"rb_eval_string_protect", (RUBY_PROC*)&dll_rb_eval_string_protect},
559     {"rb_global_variable", (RUBY_PROC*)&dll_rb_global_variable},
560     {"rb_hash_aset", (RUBY_PROC*)&dll_rb_hash_aset},
561     {"rb_hash_new", (RUBY_PROC*)&dll_rb_hash_new},
562     {"rb_inspect", (RUBY_PROC*)&dll_rb_inspect},
563     {"rb_int2inum", (RUBY_PROC*)&dll_rb_int2inum},
564 # if VIM_SIZEOF_INT < VIM_SIZEOF_LONG /* 64 bits only */
565     {"rb_fix2int", (RUBY_PROC*)&dll_rb_fix2int},
566     {"rb_num2int", (RUBY_PROC*)&dll_rb_num2int},
567     {"rb_num2uint", (RUBY_PROC*)&dll_rb_num2uint},
568 # endif
569     {"rb_lastline_get", (RUBY_PROC*)&dll_rb_lastline_get},
570     {"rb_lastline_set", (RUBY_PROC*)&dll_rb_lastline_set},
571     {"rb_load_protect", (RUBY_PROC*)&dll_rb_load_protect},
572     {"rb_num2long", (RUBY_PROC*)&dll_rb_num2long},
573     {"rb_num2ulong", (RUBY_PROC*)&dll_rb_num2ulong},
574     {"rb_obj_alloc", (RUBY_PROC*)&dll_rb_obj_alloc},
575     {"rb_obj_as_string", (RUBY_PROC*)&dll_rb_obj_as_string},
576     {"rb_obj_id", (RUBY_PROC*)&dll_rb_obj_id},
577     {"rb_raise", (RUBY_PROC*)&dll_rb_raise},
578 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
579     {"rb_string_value", (RUBY_PROC*)&dll_rb_string_value},
580 # else
581     {"rb_str2cstr", (RUBY_PROC*)&dll_rb_str2cstr},
582 # endif
583     {"rb_str_cat", (RUBY_PROC*)&dll_rb_str_cat},
584     {"rb_str_concat", (RUBY_PROC*)&dll_rb_str_concat},
585     {"rb_str_new", (RUBY_PROC*)&dll_rb_str_new},
586 # ifdef need_rb_str_new_cstr
587     {"rb_str_new_cstr", (RUBY_PROC*)&dll_rb_str_new_cstr},
588 # else
589     {"rb_str_new2", (RUBY_PROC*)&dll_rb_str_new2},
590 # endif
591 # ifdef RUBY19_OR_LATER
592     {"rb_errinfo", (RUBY_PROC*)&dll_rb_errinfo},
593 # else
594     {"ruby_errinfo", (RUBY_PROC*)&dll_ruby_errinfo},
595 # endif
596     {"ruby_init", (RUBY_PROC*)&dll_ruby_init},
597     {"ruby_init_loadpath", (RUBY_PROC*)&dll_ruby_init_loadpath},
598 # ifdef WIN3264
599 #  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER < 19
600     {"NtInitialize", (RUBY_PROC*)&dll_NtInitialize},
601 #  else
602     {"ruby_sysinit", (RUBY_PROC*)&dll_ruby_sysinit},
603 #  endif
604 #  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
605     {"rb_w32_snprintf", (RUBY_PROC*)&dll_rb_w32_snprintf},
606 #  endif
607 # endif
608 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
609     {"rb_string_value_ptr", (RUBY_PROC*)&dll_rb_string_value_ptr},
610 #  if DYNAMIC_RUBY_VER <= 19
611     {"rb_float_new", (RUBY_PROC*)&dll_rb_float_new},
612 #  else
613     {"rb_float_new_in_heap", (RUBY_PROC*)&dll_rb_float_new},
614 #  endif
615     {"rb_ary_new", (RUBY_PROC*)&dll_rb_ary_new},
616     {"rb_ary_push", (RUBY_PROC*)&dll_rb_ary_push},
617 # endif
618 # ifdef RUBY19_OR_LATER
619     {"rb_int2big", (RUBY_PROC*)&dll_rb_int2big},
620     {"ruby_script", (RUBY_PROC*)&dll_ruby_script},
621     {"rb_enc_find_index", (RUBY_PROC*)&dll_rb_enc_find_index},
622     {"rb_enc_find", (RUBY_PROC*)&dll_rb_enc_find},
623     {"rb_enc_str_new", (RUBY_PROC*)&dll_rb_enc_str_new},
624     {"rb_sprintf", (RUBY_PROC*)&dll_rb_sprintf},
625     {"rb_require", (RUBY_PROC*)&dll_rb_require},
626     {"ruby_options", (RUBY_PROC*)&dll_ruby_options},
627 # endif
628 # if defined(RUBY19_OR_LATER) || defined(RUBY_INIT_STACK)
629 #  ifdef __ia64
630     {"rb_ia64_bsp", (RUBY_PROC*)&dll_rb_ia64_bsp},
631 #  endif
632     {"ruby_init_stack", (RUBY_PROC*)&dll_ruby_init_stack},
633 # endif
634 # if defined(USE_RGENGC) && USE_RGENGC
635 #  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER == 21
636     {"rb_gc_writebarrier_unprotect_promoted", (RUBY_PROC*)&dll_rb_gc_writebarrier_unprotect_promoted},
637 #  else
638     {"rb_gc_writebarrier_unprotect", (RUBY_PROC*)&dll_rb_gc_writebarrier_unprotect},
639 #  endif
640 # endif
641     {"", NULL},
642 };
643 
644 /*
645  * Free ruby.dll
646  */
647     static void
648 end_dynamic_ruby(void)
649 {
650     if (hinstRuby)
651     {
652 	close_dll(hinstRuby);
653 	hinstRuby = NULL;
654     }
655 }
656 
657 /*
658  * Load library and get all pointers.
659  * Parameter 'libname' provides name of DLL.
660  * Return OK or FAIL.
661  */
662     static int
663 ruby_runtime_link_init(char *libname, int verbose)
664 {
665     int i;
666 
667     if (hinstRuby)
668 	return OK;
669     hinstRuby = load_dll(libname);
670     if (!hinstRuby)
671     {
672 	if (verbose)
673 	    EMSG2(_(e_loadlib), libname);
674 	return FAIL;
675     }
676 
677     for (i = 0; ruby_funcname_table[i].ptr; ++i)
678     {
679 	if (!(*ruby_funcname_table[i].ptr = symbol_from_dll(hinstRuby,
680 			ruby_funcname_table[i].name)))
681 	{
682 	    close_dll(hinstRuby);
683 	    hinstRuby = NULL;
684 	    if (verbose)
685 		EMSG2(_(e_loadfunc), ruby_funcname_table[i].name);
686 	    return FAIL;
687 	}
688     }
689     return OK;
690 }
691 
692 /*
693  * If ruby is enabled (there is installed ruby on Windows system) return TRUE,
694  * else FALSE.
695  */
696     int
697 ruby_enabled(int verbose)
698 {
699     return ruby_runtime_link_init((char *)p_rubydll, verbose) == OK;
700 }
701 #endif /* defined(DYNAMIC_RUBY) || defined(PROTO) */
702 
703     void
704 ruby_end(void)
705 {
706 #ifdef DYNAMIC_RUBY
707     end_dynamic_ruby();
708 #endif
709 }
710 
711 void ex_ruby(exarg_T *eap)
712 {
713     int state;
714     char *script = NULL;
715 
716     script = (char *)script_get(eap, eap->arg);
717     if (!eap->skip && ensure_ruby_initialized())
718     {
719 	if (script == NULL)
720 	    rb_eval_string_protect((char *)eap->arg, &state);
721 	else
722 	    rb_eval_string_protect(script, &state);
723 	if (state)
724 	    error_print(state);
725     }
726     vim_free(script);
727 }
728 
729 /*
730  *  In Ruby 1.9 or later, ruby String object has encoding.
731  *  conversion buffer string of vim to ruby String object using
732  *  VIM encoding option.
733  */
734     static VALUE
735 vim_str2rb_enc_str(const char *s)
736 {
737 #ifdef RUBY19_OR_LATER
738     int isnum;
739     long lval;
740     char_u *sval;
741     rb_encoding *enc;
742 
743     isnum = get_option_value((char_u *)"enc", &lval, &sval, 0);
744     if (isnum == 0)
745     {
746 	enc = rb_enc_find((char *)sval);
747 	vim_free(sval);
748 	if (enc)
749 	{
750 	    return rb_enc_str_new(s, (long)strlen(s), enc);
751 	}
752     }
753 #endif
754     return rb_str_new2(s);
755 }
756 
757     static VALUE
758 eval_enc_string_protect(const char *str, int *state)
759 {
760 #ifdef RUBY19_OR_LATER
761     int isnum;
762     long lval;
763     char_u *sval;
764     rb_encoding *enc;
765     VALUE v;
766 
767     isnum = get_option_value((char_u *)"enc", &lval, &sval, 0);
768     if (isnum == 0)
769     {
770 	enc = rb_enc_find((char *)sval);
771 	vim_free(sval);
772 	if (enc)
773 	{
774 	    v = rb_sprintf("#-*- coding:%s -*-\n%s", rb_enc_name(enc), str);
775 	    return rb_eval_string_protect(StringValuePtr(v), state);
776 	}
777     }
778 #endif
779     return rb_eval_string_protect(str, state);
780 }
781 
782 void ex_rubydo(exarg_T *eap)
783 {
784     int state;
785     linenr_T i;
786 
787     if (ensure_ruby_initialized())
788     {
789 	if (u_save(eap->line1 - 1, eap->line2 + 1) != OK)
790 	    return;
791 	for (i = eap->line1; i <= eap->line2; i++)
792 	{
793 	    VALUE line;
794 
795 	    line = vim_str2rb_enc_str((char *)ml_get(i));
796 	    rb_lastline_set(line);
797 	    eval_enc_string_protect((char *) eap->arg, &state);
798 	    if (state)
799 	    {
800 		error_print(state);
801 		break;
802 	    }
803 	    line = rb_lastline_get();
804 	    if (!NIL_P(line))
805 	    {
806 		if (TYPE(line) != T_STRING)
807 		{
808 		    EMSG(_("E265: $_ must be an instance of String"));
809 		    return;
810 		}
811 		ml_replace(i, (char_u *) StringValuePtr(line), 1);
812 		changed();
813 #ifdef SYNTAX_HL
814 		syn_changed(i); /* recompute syntax hl. for this line */
815 #endif
816 	    }
817 	}
818 	check_cursor();
819 	update_curbuf(NOT_VALID);
820     }
821 }
822 
823 void ex_rubyfile(exarg_T *eap)
824 {
825     int state;
826 
827     if (ensure_ruby_initialized())
828     {
829 	rb_load_protect(rb_str_new2((char *) eap->arg), 0, &state);
830 	if (state) error_print(state);
831     }
832 }
833 
834 void ruby_buffer_free(buf_T *buf)
835 {
836     if (buf->b_ruby_ref)
837     {
838 	rb_hash_aset(objtbl, rb_obj_id((VALUE) buf->b_ruby_ref), Qnil);
839 	RDATA(buf->b_ruby_ref)->data = NULL;
840     }
841 }
842 
843 void ruby_window_free(win_T *win)
844 {
845     if (win->w_ruby_ref)
846     {
847 	rb_hash_aset(objtbl, rb_obj_id((VALUE) win->w_ruby_ref), Qnil);
848 	RDATA(win->w_ruby_ref)->data = NULL;
849     }
850 }
851 
852 static int ensure_ruby_initialized(void)
853 {
854     if (!ruby_initialized)
855     {
856 #ifdef DYNAMIC_RUBY
857 	if (ruby_enabled(TRUE))
858 	{
859 #endif
860 #ifdef _WIN32
861 	    /* suggested by Ariya Mizutani */
862 	    int argc = 1;
863 	    char *argv[] = {"gvim.exe"};
864 	    char **argvp = argv;
865 # ifdef RUBY19_OR_LATER
866 	    ruby_sysinit(&argc, &argvp);
867 # else
868 	    NtInitialize(&argc, &argvp);
869 # endif
870 #endif
871 	    {
872 #if defined(RUBY19_OR_LATER) || defined(RUBY_INIT_STACK)
873 		ruby_init_stack(ruby_stack_start);
874 #endif
875 		ruby_init();
876 	    }
877 #ifdef RUBY19_OR_LATER
878 	    {
879 		int dummy_argc = 2;
880 		char *dummy_argv[] = {"vim-ruby", "-e0"};
881 		ruby_options(dummy_argc, dummy_argv);
882 	    }
883 	    ruby_script("vim-ruby");
884 #else
885 	    ruby_init_loadpath();
886 #endif
887 	    ruby_io_init();
888 	    ruby_vim_init();
889 	    ruby_initialized = 1;
890 #ifdef DYNAMIC_RUBY
891 	}
892 	else
893 	{
894 	    EMSG(_("E266: Sorry, this command is disabled, the Ruby library could not be loaded."));
895 	    return 0;
896 	}
897 #endif
898     }
899     return ruby_initialized;
900 }
901 
902 static void error_print(int state)
903 {
904 #ifndef DYNAMIC_RUBY
905 #if !(defined(RUBY_VERSION) && RUBY_VERSION >= 19) \
906     && !(defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 19)
907     RUBYEXTERN VALUE ruby_errinfo;
908 #endif
909 #endif
910     VALUE eclass;
911     VALUE einfo;
912     char buff[BUFSIZ];
913 
914 #define TAG_RETURN	0x1
915 #define TAG_BREAK	0x2
916 #define TAG_NEXT	0x3
917 #define TAG_RETRY	0x4
918 #define TAG_REDO	0x5
919 #define TAG_RAISE	0x6
920 #define TAG_THROW	0x7
921 #define TAG_FATAL	0x8
922 #define TAG_MASK	0xf
923 
924     switch (state)
925     {
926     case TAG_RETURN:
927 	EMSG(_("E267: unexpected return"));
928 	break;
929     case TAG_NEXT:
930 	EMSG(_("E268: unexpected next"));
931 	break;
932     case TAG_BREAK:
933 	EMSG(_("E269: unexpected break"));
934 	break;
935     case TAG_REDO:
936 	EMSG(_("E270: unexpected redo"));
937 	break;
938     case TAG_RETRY:
939 	EMSG(_("E271: retry outside of rescue clause"));
940 	break;
941     case TAG_RAISE:
942     case TAG_FATAL:
943 #ifdef RUBY19_OR_LATER
944 	eclass = CLASS_OF(rb_errinfo());
945 	einfo = rb_obj_as_string(rb_errinfo());
946 #else
947 	eclass = CLASS_OF(ruby_errinfo);
948 	einfo = rb_obj_as_string(ruby_errinfo);
949 #endif
950 	if (eclass == rb_eRuntimeError && RSTRING_LEN(einfo) == 0)
951 	{
952 	    EMSG(_("E272: unhandled exception"));
953 	}
954 	else
955 	{
956 	    VALUE epath;
957 	    char *p;
958 
959 	    epath = rb_class_path(eclass);
960 	    vim_snprintf(buff, BUFSIZ, "%s: %s",
961 		     RSTRING_PTR(epath), RSTRING_PTR(einfo));
962 	    p = strchr(buff, '\n');
963 	    if (p) *p = '\0';
964 	    EMSG(buff);
965 	}
966 	break;
967     default:
968 	vim_snprintf(buff, BUFSIZ, _("E273: unknown longjmp status %d"), state);
969 	EMSG(buff);
970 	break;
971     }
972 }
973 
974 static VALUE vim_message(VALUE self UNUSED, VALUE str)
975 {
976     char *buff, *p;
977 
978     str = rb_obj_as_string(str);
979     if (RSTRING_LEN(str) > 0)
980     {
981 	/* Only do this when the string isn't empty, alloc(0) causes trouble. */
982 	buff = ALLOCA_N(char, RSTRING_LEN(str));
983 	strcpy(buff, RSTRING_PTR(str));
984 	p = strchr(buff, '\n');
985 	if (p) *p = '\0';
986 	MSG(buff);
987     }
988     else
989     {
990 	MSG("");
991     }
992     return Qnil;
993 }
994 
995 static VALUE vim_set_option(VALUE self UNUSED, VALUE str)
996 {
997     do_set((char_u *)StringValuePtr(str), 0);
998     update_screen(NOT_VALID);
999     return Qnil;
1000 }
1001 
1002 static VALUE vim_command(VALUE self UNUSED, VALUE str)
1003 {
1004     do_cmdline_cmd((char_u *)StringValuePtr(str));
1005     return Qnil;
1006 }
1007 
1008 #ifdef FEAT_EVAL
1009 static VALUE vim_to_ruby(typval_T *tv)
1010 {
1011     VALUE result = Qnil;
1012 
1013     if (tv->v_type == VAR_STRING)
1014     {
1015 	result = rb_str_new2(tv->vval.v_string == NULL
1016 					  ? "" : (char *)(tv->vval.v_string));
1017     }
1018     else if (tv->v_type == VAR_NUMBER)
1019     {
1020 	result = INT2NUM(tv->vval.v_number);
1021     }
1022 # ifdef FEAT_FLOAT
1023     else if (tv->v_type == VAR_FLOAT)
1024     {
1025 	result = rb_float_new(tv->vval.v_float);
1026     }
1027 # endif
1028     else if (tv->v_type == VAR_LIST)
1029     {
1030 	list_T      *list = tv->vval.v_list;
1031 	listitem_T  *curr;
1032 
1033 	result = rb_ary_new();
1034 
1035 	if (list != NULL)
1036 	{
1037 	    for (curr = list->lv_first; curr != NULL; curr = curr->li_next)
1038 	    {
1039 		rb_ary_push(result, vim_to_ruby(&curr->li_tv));
1040 	    }
1041 	}
1042     }
1043     else if (tv->v_type == VAR_DICT)
1044     {
1045 	result = rb_hash_new();
1046 
1047 	if (tv->vval.v_dict != NULL)
1048 	{
1049 	    hashtab_T   *ht = &tv->vval.v_dict->dv_hashtab;
1050 	    long_u      todo = ht->ht_used;
1051 	    hashitem_T  *hi;
1052 	    dictitem_T  *di;
1053 
1054 	    for (hi = ht->ht_array; todo > 0; ++hi)
1055 	    {
1056 		if (!HASHITEM_EMPTY(hi))
1057 		{
1058 		    --todo;
1059 
1060 		    di = dict_lookup(hi);
1061 		    rb_hash_aset(result, rb_str_new2((char *)hi->hi_key),
1062 						     vim_to_ruby(&di->di_tv));
1063 		}
1064 	    }
1065 	}
1066     }
1067     else if (tv->v_type == VAR_SPECIAL)
1068     {
1069 	if (tv->vval.v_number <= VVAL_TRUE)
1070 	    result = INT2NUM(tv->vval.v_number);
1071     } /* else return Qnil; */
1072 
1073     return result;
1074 }
1075 #endif
1076 
1077 static VALUE vim_evaluate(VALUE self UNUSED, VALUE str)
1078 {
1079 #ifdef FEAT_EVAL
1080     typval_T    *tv;
1081     VALUE       result;
1082 
1083     tv = eval_expr((char_u *)StringValuePtr(str), NULL);
1084     if (tv == NULL)
1085     {
1086 	return Qnil;
1087     }
1088     result = vim_to_ruby(tv);
1089 
1090     free_tv(tv);
1091 
1092     return result;
1093 #else
1094     return Qnil;
1095 #endif
1096 }
1097 
1098 #ifdef USE_TYPEDDATA
1099 static size_t buffer_dsize(const void *buf);
1100 
1101 static const rb_data_type_t buffer_type = {
1102     "vim_buffer",
1103     {0, 0, buffer_dsize, {0, 0}},
1104     0, 0,
1105 # ifdef RUBY_TYPED_FREE_IMMEDIATELY
1106     0,
1107 # endif
1108 };
1109 
1110 static size_t buffer_dsize(const void *buf UNUSED)
1111 {
1112     return sizeof(buf_T);
1113 }
1114 #endif
1115 
1116 static VALUE buffer_new(buf_T *buf)
1117 {
1118     if (buf->b_ruby_ref)
1119     {
1120 	return (VALUE) buf->b_ruby_ref;
1121     }
1122     else
1123     {
1124 #ifdef USE_TYPEDDATA
1125 	VALUE obj = TypedData_Wrap_Struct(cBuffer, &buffer_type, buf);
1126 #else
1127 	VALUE obj = Data_Wrap_Struct(cBuffer, 0, 0, buf);
1128 #endif
1129 	buf->b_ruby_ref = (void *) obj;
1130 	rb_hash_aset(objtbl, rb_obj_id(obj), obj);
1131 	return obj;
1132     }
1133 }
1134 
1135 static buf_T *get_buf(VALUE obj)
1136 {
1137     buf_T *buf;
1138 
1139 #ifdef USE_TYPEDDATA
1140     TypedData_Get_Struct(obj, buf_T, &buffer_type, buf);
1141 #else
1142     Data_Get_Struct(obj, buf_T, buf);
1143 #endif
1144     if (buf == NULL)
1145 	rb_raise(eDeletedBufferError, "attempt to refer to deleted buffer");
1146     return buf;
1147 }
1148 
1149 static VALUE buffer_s_current(void)
1150 {
1151     return buffer_new(curbuf);
1152 }
1153 
1154 static VALUE buffer_s_count(void)
1155 {
1156     buf_T *b;
1157     int n = 0;
1158 
1159     FOR_ALL_BUFFERS(b)
1160     {
1161 	/*  Deleted buffers should not be counted
1162 	 *    SegPhault - 01/07/05 */
1163 	if (b->b_p_bl)
1164 	    n++;
1165     }
1166 
1167     return INT2NUM(n);
1168 }
1169 
1170 static VALUE buffer_s_aref(VALUE self UNUSED, VALUE num)
1171 {
1172     buf_T *b;
1173     int n = NUM2INT(num);
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 	    continue;
1181 
1182 	if (n == 0)
1183 	    return buffer_new(b);
1184 
1185 	n--;
1186     }
1187     return Qnil;
1188 }
1189 
1190 static VALUE buffer_name(VALUE self)
1191 {
1192     buf_T *buf = get_buf(self);
1193 
1194     return buf->b_ffname ? rb_str_new2((char *)buf->b_ffname) : Qnil;
1195 }
1196 
1197 static VALUE buffer_number(VALUE self)
1198 {
1199     buf_T *buf = get_buf(self);
1200 
1201     return INT2NUM(buf->b_fnum);
1202 }
1203 
1204 static VALUE buffer_count(VALUE self)
1205 {
1206     buf_T *buf = get_buf(self);
1207 
1208     return INT2NUM(buf->b_ml.ml_line_count);
1209 }
1210 
1211 static VALUE get_buffer_line(buf_T *buf, linenr_T n)
1212 {
1213     if (n <= 0 || n > buf->b_ml.ml_line_count)
1214 	rb_raise(rb_eIndexError, "line number %ld out of range", (long)n);
1215     return vim_str2rb_enc_str((char *)ml_get_buf(buf, n, FALSE));
1216 }
1217 
1218 static VALUE buffer_aref(VALUE self, VALUE num)
1219 {
1220     buf_T *buf = get_buf(self);
1221 
1222     if (buf != NULL)
1223 	return get_buffer_line(buf, (linenr_T)NUM2LONG(num));
1224     return Qnil; /* For stop warning */
1225 }
1226 
1227 static VALUE set_buffer_line(buf_T *buf, linenr_T n, VALUE str)
1228 {
1229     char	*line = StringValuePtr(str);
1230     aco_save_T	aco;
1231 
1232     if (n > 0 && n <= buf->b_ml.ml_line_count && line != NULL)
1233     {
1234 	/* set curwin/curbuf for "buf" and save some things */
1235 	aucmd_prepbuf(&aco, buf);
1236 
1237 	if (u_savesub(n) == OK)
1238 	{
1239 	    ml_replace(n, (char_u *)line, TRUE);
1240 	    changed();
1241 #ifdef SYNTAX_HL
1242 	    syn_changed(n); /* recompute syntax hl. for this line */
1243 #endif
1244 	}
1245 
1246 	/* restore curwin/curbuf and a few other things */
1247 	aucmd_restbuf(&aco);
1248 	/* Careful: autocommands may have made "buf" invalid! */
1249 
1250 	update_curbuf(NOT_VALID);
1251     }
1252     else
1253     {
1254 	rb_raise(rb_eIndexError, "line number %ld out of range", (long)n);
1255     }
1256     return str;
1257 }
1258 
1259 static VALUE buffer_aset(VALUE self, VALUE num, VALUE str)
1260 {
1261     buf_T *buf = get_buf(self);
1262 
1263     if (buf != NULL)
1264 	return set_buffer_line(buf, (linenr_T)NUM2LONG(num), str);
1265     return str;
1266 }
1267 
1268 static VALUE buffer_delete(VALUE self, VALUE num)
1269 {
1270     buf_T	*buf = get_buf(self);
1271     long	n = NUM2LONG(num);
1272     aco_save_T	aco;
1273 
1274     if (n > 0 && n <= buf->b_ml.ml_line_count)
1275     {
1276 	/* set curwin/curbuf for "buf" and save some things */
1277 	aucmd_prepbuf(&aco, buf);
1278 
1279 	if (u_savedel(n, 1) == OK)
1280 	{
1281 	    ml_delete(n, 0);
1282 
1283 	    /* Changes to non-active buffers should properly refresh
1284 	     *   SegPhault - 01/09/05 */
1285 	    deleted_lines_mark(n, 1L);
1286 
1287 	    changed();
1288 	}
1289 
1290 	/* restore curwin/curbuf and a few other things */
1291 	aucmd_restbuf(&aco);
1292 	/* Careful: autocommands may have made "buf" invalid! */
1293 
1294 	update_curbuf(NOT_VALID);
1295     }
1296     else
1297     {
1298 	rb_raise(rb_eIndexError, "line number %ld out of range", n);
1299     }
1300     return Qnil;
1301 }
1302 
1303 static VALUE buffer_append(VALUE self, VALUE num, VALUE str)
1304 {
1305     buf_T	*buf = get_buf(self);
1306     char	*line = StringValuePtr(str);
1307     long	n = NUM2LONG(num);
1308     aco_save_T	aco;
1309 
1310     if (line == NULL)
1311     {
1312 	rb_raise(rb_eIndexError, "NULL line");
1313     }
1314     else if (n >= 0 && n <= buf->b_ml.ml_line_count)
1315     {
1316 	/* set curwin/curbuf for "buf" and save some things */
1317 	aucmd_prepbuf(&aco, buf);
1318 
1319 	if (u_inssub(n + 1) == OK)
1320 	{
1321 	    ml_append(n, (char_u *) line, (colnr_T) 0, FALSE);
1322 
1323 	    /*  Changes to non-active buffers should properly refresh screen
1324 	     *    SegPhault - 12/20/04 */
1325 	    appended_lines_mark(n, 1L);
1326 
1327 	    changed();
1328 	}
1329 
1330 	/* restore curwin/curbuf and a few other things */
1331 	aucmd_restbuf(&aco);
1332 	/* Careful: autocommands may have made "buf" invalid! */
1333 
1334 	update_curbuf(NOT_VALID);
1335     }
1336     else
1337     {
1338 	rb_raise(rb_eIndexError, "line number %ld out of range", n);
1339     }
1340     return str;
1341 }
1342 
1343 #ifdef USE_TYPEDDATA
1344 static size_t window_dsize(const void *buf);
1345 
1346 static const rb_data_type_t window_type = {
1347     "vim_window",
1348     {0, 0, window_dsize, {0, 0}},
1349     0, 0,
1350 # ifdef RUBY_TYPED_FREE_IMMEDIATELY
1351     0,
1352 # endif
1353 };
1354 
1355 static size_t window_dsize(const void *win UNUSED)
1356 {
1357     return sizeof(win_T);
1358 }
1359 #endif
1360 
1361 static VALUE window_new(win_T *win)
1362 {
1363     if (win->w_ruby_ref)
1364     {
1365 	return (VALUE) win->w_ruby_ref;
1366     }
1367     else
1368     {
1369 #ifdef USE_TYPEDDATA
1370 	VALUE obj = TypedData_Wrap_Struct(cVimWindow, &window_type, win);
1371 #else
1372 	VALUE obj = Data_Wrap_Struct(cVimWindow, 0, 0, win);
1373 #endif
1374 	win->w_ruby_ref = (void *) obj;
1375 	rb_hash_aset(objtbl, rb_obj_id(obj), obj);
1376 	return obj;
1377     }
1378 }
1379 
1380 static win_T *get_win(VALUE obj)
1381 {
1382     win_T *win;
1383 
1384 #ifdef USE_TYPEDDATA
1385     TypedData_Get_Struct(obj, win_T, &window_type, win);
1386 #else
1387     Data_Get_Struct(obj, win_T, win);
1388 #endif
1389     if (win == NULL)
1390 	rb_raise(eDeletedWindowError, "attempt to refer to deleted window");
1391     return win;
1392 }
1393 
1394 static VALUE window_s_current(void)
1395 {
1396     return window_new(curwin);
1397 }
1398 
1399 /*
1400  * Added line manipulation functions
1401  *    SegPhault - 03/07/05
1402  */
1403 static VALUE line_s_current(void)
1404 {
1405     return get_buffer_line(curbuf, curwin->w_cursor.lnum);
1406 }
1407 
1408 static VALUE set_current_line(VALUE self UNUSED, VALUE str)
1409 {
1410     return set_buffer_line(curbuf, curwin->w_cursor.lnum, str);
1411 }
1412 
1413 static VALUE current_line_number(void)
1414 {
1415     return INT2FIX((int)curwin->w_cursor.lnum);
1416 }
1417 
1418 
1419 
1420 static VALUE window_s_count(void)
1421 {
1422 #ifdef FEAT_WINDOWS
1423     win_T	*w;
1424     int n = 0;
1425 
1426     FOR_ALL_WINDOWS(w)
1427 	n++;
1428     return INT2NUM(n);
1429 #else
1430     return INT2NUM(1);
1431 #endif
1432 }
1433 
1434 static VALUE window_s_aref(VALUE self UNUSED, VALUE num)
1435 {
1436     win_T *w;
1437     int n = NUM2INT(num);
1438 
1439 #ifndef FEAT_WINDOWS
1440     w = curwin;
1441 #else
1442     for (w = firstwin; w != NULL; w = w->w_next, --n)
1443 #endif
1444 	if (n == 0)
1445 	    return window_new(w);
1446     return Qnil;
1447 }
1448 
1449 static VALUE window_buffer(VALUE self)
1450 {
1451     win_T *win = get_win(self);
1452 
1453     return buffer_new(win->w_buffer);
1454 }
1455 
1456 static VALUE window_height(VALUE self)
1457 {
1458     win_T *win = get_win(self);
1459 
1460     return INT2NUM(win->w_height);
1461 }
1462 
1463 static VALUE window_set_height(VALUE self, VALUE height)
1464 {
1465     win_T *win = get_win(self);
1466     win_T *savewin = curwin;
1467 
1468     curwin = win;
1469     win_setheight(NUM2INT(height));
1470     curwin = savewin;
1471     return height;
1472 }
1473 
1474 static VALUE window_width(VALUE self UNUSED)
1475 {
1476     return INT2NUM(W_WIDTH(get_win(self)));
1477 }
1478 
1479 static VALUE window_set_width(VALUE self UNUSED, VALUE width)
1480 {
1481 #ifdef FEAT_WINDOWS
1482     win_T *win = get_win(self);
1483     win_T *savewin = curwin;
1484 
1485     curwin = win;
1486     win_setwidth(NUM2INT(width));
1487     curwin = savewin;
1488 #endif
1489     return width;
1490 }
1491 
1492 static VALUE window_cursor(VALUE self)
1493 {
1494     win_T *win = get_win(self);
1495 
1496     return rb_assoc_new(INT2NUM(win->w_cursor.lnum), INT2NUM(win->w_cursor.col));
1497 }
1498 
1499 static VALUE window_set_cursor(VALUE self, VALUE pos)
1500 {
1501     VALUE lnum, col;
1502     win_T *win = get_win(self);
1503 
1504     Check_Type(pos, T_ARRAY);
1505     if (RARRAY_LEN(pos) != 2)
1506 	rb_raise(rb_eArgError, "array length must be 2");
1507     lnum = RARRAY_PTR(pos)[0];
1508     col = RARRAY_PTR(pos)[1];
1509     win->w_cursor.lnum = NUM2LONG(lnum);
1510     win->w_cursor.col = NUM2UINT(col);
1511     check_cursor();		    /* put cursor on an existing line */
1512     update_screen(NOT_VALID);
1513     return Qnil;
1514 }
1515 
1516 static VALUE f_nop(VALUE self UNUSED)
1517 {
1518     return Qnil;
1519 }
1520 
1521 static VALUE f_p(int argc, VALUE *argv, VALUE self UNUSED)
1522 {
1523     int i;
1524     VALUE str = rb_str_new("", 0);
1525 
1526     for (i = 0; i < argc; i++)
1527     {
1528 	if (i > 0) rb_str_cat(str, ", ", 2);
1529 	rb_str_concat(str, rb_inspect(argv[i]));
1530     }
1531     MSG(RSTRING_PTR(str));
1532     return Qnil;
1533 }
1534 
1535 static void ruby_io_init(void)
1536 {
1537 #ifndef DYNAMIC_RUBY
1538     RUBYEXTERN VALUE rb_stdout;
1539 #endif
1540 
1541     rb_stdout = rb_obj_alloc(rb_cObject);
1542     rb_define_singleton_method(rb_stdout, "write", vim_message, 1);
1543     rb_define_singleton_method(rb_stdout, "flush", f_nop, 0);
1544     rb_define_global_function("p", f_p, -1);
1545 }
1546 
1547 static void ruby_vim_init(void)
1548 {
1549     objtbl = rb_hash_new();
1550     rb_global_variable(&objtbl);
1551 
1552     /* The Vim module used to be called "VIM", but "Vim" is better.  Make an
1553      * alias "VIM" for backwards compatibility. */
1554     mVIM = rb_define_module("Vim");
1555     rb_define_const(rb_cObject, "VIM", mVIM);
1556     rb_define_const(mVIM, "VERSION_MAJOR", INT2NUM(VIM_VERSION_MAJOR));
1557     rb_define_const(mVIM, "VERSION_MINOR", INT2NUM(VIM_VERSION_MINOR));
1558     rb_define_const(mVIM, "VERSION_BUILD", INT2NUM(VIM_VERSION_BUILD));
1559     rb_define_const(mVIM, "VERSION_PATCHLEVEL", INT2NUM(VIM_VERSION_PATCHLEVEL));
1560     rb_define_const(mVIM, "VERSION_SHORT", rb_str_new2(VIM_VERSION_SHORT));
1561     rb_define_const(mVIM, "VERSION_MEDIUM", rb_str_new2(VIM_VERSION_MEDIUM));
1562     rb_define_const(mVIM, "VERSION_LONG", rb_str_new2(VIM_VERSION_LONG));
1563     rb_define_const(mVIM, "VERSION_LONG_DATE", rb_str_new2(VIM_VERSION_LONG_DATE));
1564     rb_define_module_function(mVIM, "message", vim_message, 1);
1565     rb_define_module_function(mVIM, "set_option", vim_set_option, 1);
1566     rb_define_module_function(mVIM, "command", vim_command, 1);
1567     rb_define_module_function(mVIM, "evaluate", vim_evaluate, 1);
1568 
1569     eDeletedBufferError = rb_define_class_under(mVIM, "DeletedBufferError",
1570 						rb_eStandardError);
1571     eDeletedWindowError = rb_define_class_under(mVIM, "DeletedWindowError",
1572 						rb_eStandardError);
1573 
1574     cBuffer = rb_define_class_under(mVIM, "Buffer", rb_cObject);
1575     rb_define_singleton_method(cBuffer, "current", buffer_s_current, 0);
1576     rb_define_singleton_method(cBuffer, "count", buffer_s_count, 0);
1577     rb_define_singleton_method(cBuffer, "[]", buffer_s_aref, 1);
1578     rb_define_method(cBuffer, "name", buffer_name, 0);
1579     rb_define_method(cBuffer, "number", buffer_number, 0);
1580     rb_define_method(cBuffer, "count", buffer_count, 0);
1581     rb_define_method(cBuffer, "length", buffer_count, 0);
1582     rb_define_method(cBuffer, "[]", buffer_aref, 1);
1583     rb_define_method(cBuffer, "[]=", buffer_aset, 2);
1584     rb_define_method(cBuffer, "delete", buffer_delete, 1);
1585     rb_define_method(cBuffer, "append", buffer_append, 2);
1586 
1587     /* Added line manipulation functions
1588      *   SegPhault - 03/07/05 */
1589     rb_define_method(cBuffer, "line_number", current_line_number, 0);
1590     rb_define_method(cBuffer, "line", line_s_current, 0);
1591     rb_define_method(cBuffer, "line=", set_current_line, 1);
1592 
1593 
1594     cVimWindow = rb_define_class_under(mVIM, "Window", rb_cObject);
1595     rb_define_singleton_method(cVimWindow, "current", window_s_current, 0);
1596     rb_define_singleton_method(cVimWindow, "count", window_s_count, 0);
1597     rb_define_singleton_method(cVimWindow, "[]", window_s_aref, 1);
1598     rb_define_method(cVimWindow, "buffer", window_buffer, 0);
1599     rb_define_method(cVimWindow, "height", window_height, 0);
1600     rb_define_method(cVimWindow, "height=", window_set_height, 1);
1601     rb_define_method(cVimWindow, "width", window_width, 0);
1602     rb_define_method(cVimWindow, "width=", window_set_width, 1);
1603     rb_define_method(cVimWindow, "cursor", window_cursor, 0);
1604     rb_define_method(cVimWindow, "cursor=", window_set_cursor, 1);
1605 
1606     rb_define_virtual_variable("$curbuf", buffer_s_current, 0);
1607     rb_define_virtual_variable("$curwin", window_s_current, 0);
1608 }
1609 
1610 void vim_ruby_init(void *stack_start)
1611 {
1612     /* should get machine stack start address early in main function */
1613     ruby_stack_start = stack_start;
1614 }
1615