xref: /vim-8.2.3635/src/if_ruby.c (revision a6878375) 
1 /* vi:set ts=8 sts=4 sw=4:
2  *
3  * VIM - Vi IMproved	by Bram Moolenaar
4  *
5  * Ruby interface by Shugo Maeda
6  *   with improvements by SegPhault (Ryan Paul)
7  *   with improvements by Jon Maken
8  *
9  * Do ":help uganda"  in Vim to read copying and usage conditions.
10  * Do ":help credits" in Vim to see a list of people who contributed.
11  * See README.txt for an overview of the Vim source code.
12  */
13 
14 #ifdef HAVE_CONFIG_H
15 # include "auto/config.h"
16 #endif
17 
18 #include <stdio.h>
19 #include <string.h>
20 
21 #ifdef _WIN32
22 # if !defined(DYNAMIC_RUBY_VER) || (DYNAMIC_RUBY_VER < 18)
23 #   define NT
24 # endif
25 # ifndef DYNAMIC_RUBY
26 #  define IMPORT /* For static dll usage __declspec(dllimport) */
27 #  define RUBYEXTERN __declspec(dllimport)
28 # endif
29 #endif
30 #ifndef RUBYEXTERN
31 # define RUBYEXTERN extern
32 #endif
33 
34 #ifdef DYNAMIC_RUBY
35 /*
36  * This is tricky.  In ruby.h there is (inline) function rb_class_of()
37  * definition.  This function use these variables.  But we want function to
38  * use dll_* variables.
39  */
40 # define rb_cFalseClass		(*dll_rb_cFalseClass)
41 # define rb_cFixnum		(*dll_rb_cFixnum)
42 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 20
43 #  define rb_cFloat		(*dll_rb_cFloat)
44 # endif
45 # define rb_cNilClass		(*dll_rb_cNilClass)
46 # define rb_cSymbol		(*dll_rb_cSymbol)
47 # define rb_cTrueClass		(*dll_rb_cTrueClass)
48 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
49 /*
50  * On ver 1.8, all Ruby functions are exported with "__declspec(dllimport)"
51  * in ruby.h.  But it causes trouble for these variables, because it is
52  * defined in this file.  When defined this RUBY_EXPORT it modified to
53  * "extern" and be able to avoid this problem.
54  */
55 #  define RUBY_EXPORT
56 # endif
57 
58 #if !(defined(WIN32) || defined(_WIN64))
59 # include <dlfcn.h>
60 # define HINSTANCE void*
61 # define RUBY_PROC void*
62 # define load_dll(n) dlopen((n), RTLD_LAZY|RTLD_GLOBAL)
63 # define symbol_from_dll dlsym
64 # define close_dll dlclose
65 #else
66 # define RUBY_PROC FARPROC
67 # define load_dll vimLoadLib
68 # define symbol_from_dll GetProcAddress
69 # define close_dll FreeLibrary
70 #endif
71 
72 #endif  /* ifdef DYNAMIC_RUBY */
73 
74 /* suggested by Ariya Mizutani */
75 #if (_MSC_VER == 1200)
76 # undef _WIN32_WINNT
77 #endif
78 
79 #if (defined(RUBY_VERSION) && RUBY_VERSION >= 19) \
80     || (defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 19)
81 # define RUBY19_OR_LATER 1
82 #endif
83 
84 #if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 19
85 /* Ruby 1.9 defines a number of static functions which use rb_num2long and
86  * rb_int2big */
87 # define rb_num2long rb_num2long_stub
88 # define rb_int2big rb_int2big_stub
89 #endif
90 
91 #if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 20 \
92 	&& VIM_SIZEOF_INT < VIM_SIZEOF_LONG
93 /* Ruby 2.0 defines a number of static functions which use rb_fix2int and
94  * rb_num2int if VIM_SIZEOF_INT < VIM_SIZEOF_LONG (64bit) */
95 # define rb_fix2int rb_fix2int_stub
96 # define rb_num2int rb_num2int_stub
97 #endif
98 
99 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 21
100 /* Ruby 2.1 adds new GC called RGenGC and RARRAY_PTR uses
101  * rb_gc_writebarrier_unprotect_promoted if USE_RGENGC  */
102 #  define rb_gc_writebarrier_unprotect_promoted rb_gc_writebarrier_unprotect_promoted_stub
103 # endif
104 
105 #include <ruby.h>
106 #ifdef RUBY19_OR_LATER
107 # include <ruby/encoding.h>
108 #endif
109 
110 #undef off_t	/* ruby defines off_t as _int64, Mingw uses long */
111 #undef EXTERN
112 #undef _
113 
114 /* T_DATA defined both by Ruby and Mac header files, hack around it... */
115 #if defined(MACOS_X_UNIX) || defined(macintosh)
116 # define __OPENTRANSPORT__
117 # define __OPENTRANSPORTPROTOCOL__
118 # define __OPENTRANSPORTPROVIDERS__
119 #endif
120 
121 /*
122  * Backward compatibility for Ruby 1.8 and earlier.
123  * Ruby 1.9 does not provide STR2CSTR, instead StringValuePtr is provided.
124  * Ruby 1.9 does not provide RXXX(s)->len and RXXX(s)->ptr, instead
125  * RXXX_LEN(s) and RXXX_PTR(s) are provided.
126  */
127 #ifndef StringValuePtr
128 # define StringValuePtr(s) STR2CSTR(s)
129 #endif
130 #ifndef RARRAY_LEN
131 # define RARRAY_LEN(s) RARRAY(s)->len
132 #endif
133 #ifndef RARRAY_PTR
134 # define RARRAY_PTR(s) RARRAY(s)->ptr
135 #endif
136 #ifndef RSTRING_LEN
137 # define RSTRING_LEN(s) RSTRING(s)->len
138 #endif
139 #ifndef RSTRING_PTR
140 # define RSTRING_PTR(s) RSTRING(s)->ptr
141 #endif
142 
143 #include "vim.h"
144 #include "version.h"
145 
146 #if defined(PROTO) && !defined(FEAT_RUBY)
147 /* Define these to be able to generate the function prototypes. */
148 # define VALUE int
149 # define RUBY_DATA_FUNC int
150 #endif
151 
152 static int ruby_initialized = 0;
153 static void *ruby_stack_start;
154 static VALUE objtbl;
155 
156 static VALUE mVIM;
157 static VALUE cBuffer;
158 static VALUE cVimWindow;
159 static VALUE eDeletedBufferError;
160 static VALUE eDeletedWindowError;
161 
162 static int ensure_ruby_initialized(void);
163 static void error_print(int);
164 static void ruby_io_init(void);
165 static void ruby_vim_init(void);
166 
167 #if defined(RUBY19_OR_LATER) || defined(RUBY_INIT_STACK)
168 # if defined(__ia64) && !defined(ruby_init_stack)
169 #  define ruby_init_stack(addr) ruby_init_stack((addr), rb_ia64_bsp())
170 # endif
171 #endif
172 
173 #if defined(DYNAMIC_RUBY) || defined(PROTO)
174 # ifdef PROTO
175 #  define HINSTANCE int		/* for generating prototypes */
176 # endif
177 
178 /*
179  * Wrapper defines
180  */
181 # define rb_assoc_new			dll_rb_assoc_new
182 # define rb_cObject			(*dll_rb_cObject)
183 # define rb_check_type			dll_rb_check_type
184 # define rb_class_path			dll_rb_class_path
185 # define rb_data_object_alloc		dll_rb_data_object_alloc
186 # define rb_define_class_under		dll_rb_define_class_under
187 # define rb_define_const			dll_rb_define_const
188 # define rb_define_global_function	dll_rb_define_global_function
189 # define rb_define_method		dll_rb_define_method
190 # define rb_define_module		dll_rb_define_module
191 # define rb_define_module_function	dll_rb_define_module_function
192 # define rb_define_singleton_method	dll_rb_define_singleton_method
193 # define rb_define_virtual_variable	dll_rb_define_virtual_variable
194 # define rb_stdout			(*dll_rb_stdout)
195 # define rb_eArgError			(*dll_rb_eArgError)
196 # define rb_eIndexError			(*dll_rb_eIndexError)
197 # define rb_eRuntimeError		(*dll_rb_eRuntimeError)
198 # define rb_eStandardError		(*dll_rb_eStandardError)
199 # define rb_eval_string_protect		dll_rb_eval_string_protect
200 # define rb_global_variable		dll_rb_global_variable
201 # define rb_hash_aset			dll_rb_hash_aset
202 # define rb_hash_new			dll_rb_hash_new
203 # define rb_inspect			dll_rb_inspect
204 # define rb_int2inum			dll_rb_int2inum
205 # if VIM_SIZEOF_INT < VIM_SIZEOF_LONG /* 64 bits only */
206 #  define rb_fix2int			dll_rb_fix2int
207 #  define rb_num2int			dll_rb_num2int
208 #  define rb_num2uint			dll_rb_num2uint
209 # endif
210 # define rb_lastline_get			dll_rb_lastline_get
211 # define rb_lastline_set			dll_rb_lastline_set
212 # define rb_load_protect			dll_rb_load_protect
213 # ifndef RUBY19_OR_LATER
214 #  define rb_num2long			dll_rb_num2long
215 # endif
216 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER <= 19
217 #  define rb_num2ulong			dll_rb_num2ulong
218 # endif
219 # define rb_obj_alloc			dll_rb_obj_alloc
220 # define rb_obj_as_string		dll_rb_obj_as_string
221 # define rb_obj_id			dll_rb_obj_id
222 # define rb_raise			dll_rb_raise
223 # define rb_str_cat			dll_rb_str_cat
224 # define rb_str_concat			dll_rb_str_concat
225 # define rb_str_new			dll_rb_str_new
226 # ifdef rb_str_new2
227 /* Ruby may #define rb_str_new2 to use rb_str_new_cstr. */
228 #  define need_rb_str_new_cstr 1
229 /* Ruby's headers #define rb_str_new_cstr to make use of GCC's
230  * __builtin_constant_p extension. */
231 #  undef rb_str_new_cstr
232 #  define rb_str_new_cstr		dll_rb_str_new_cstr
233 # else
234 #  define rb_str_new2			dll_rb_str_new2
235 # endif
236 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
237 #  define rb_string_value		dll_rb_string_value
238 #  define rb_string_value_ptr		dll_rb_string_value_ptr
239 #  define rb_float_new			dll_rb_float_new
240 #  define rb_ary_new			dll_rb_ary_new
241 #  define rb_ary_push			dll_rb_ary_push
242 #  if defined(RUBY19_OR_LATER) || defined(RUBY_INIT_STACK)
243 #   ifdef __ia64
244 #    define rb_ia64_bsp			dll_rb_ia64_bsp
245 #    undef ruby_init_stack
246 #    define ruby_init_stack(addr)	dll_ruby_init_stack((addr), rb_ia64_bsp())
247 #   else
248 #    define ruby_init_stack		dll_ruby_init_stack
249 #   endif
250 #  endif
251 # else
252 #  define rb_str2cstr			dll_rb_str2cstr
253 # endif
254 # ifdef RUBY19_OR_LATER
255 #  define rb_errinfo			dll_rb_errinfo
256 # else
257 #  define ruby_errinfo			(*dll_ruby_errinfo)
258 # endif
259 # define ruby_init			dll_ruby_init
260 # define ruby_init_loadpath		dll_ruby_init_loadpath
261 # ifdef WIN3264
262 #  define NtInitialize			dll_NtInitialize
263 #  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
264 #   define rb_w32_snprintf		dll_rb_w32_snprintf
265 #  endif
266 # endif
267 
268 # ifdef RUBY19_OR_LATER
269 #  define ruby_script			dll_ruby_script
270 #  define rb_enc_find_index		dll_rb_enc_find_index
271 #  define rb_enc_find			dll_rb_enc_find
272 #  define rb_enc_str_new			dll_rb_enc_str_new
273 #  define rb_sprintf			dll_rb_sprintf
274 #  define rb_require			dll_rb_require
275 #  define ruby_process_options		dll_ruby_process_options
276 # endif
277 
278 /*
279  * Pointers for dynamic link
280  */
281 static VALUE (*dll_rb_assoc_new) (VALUE, VALUE);
282 VALUE *dll_rb_cFalseClass;
283 VALUE *dll_rb_cFixnum;
284 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 20
285 VALUE *dll_rb_cFloat;
286 # endif
287 VALUE *dll_rb_cNilClass;
288 static VALUE *dll_rb_cObject;
289 VALUE *dll_rb_cSymbol;
290 VALUE *dll_rb_cTrueClass;
291 static void (*dll_rb_check_type) (VALUE,int);
292 static VALUE (*dll_rb_class_path) (VALUE);
293 static VALUE (*dll_rb_data_object_alloc) (VALUE, void*, RUBY_DATA_FUNC, RUBY_DATA_FUNC);
294 static VALUE (*dll_rb_define_class_under) (VALUE, const char*, VALUE);
295 static void (*dll_rb_define_const) (VALUE,const char*,VALUE);
296 static void (*dll_rb_define_global_function) (const char*,VALUE(*)(),int);
297 static void (*dll_rb_define_method) (VALUE,const char*,VALUE(*)(),int);
298 static VALUE (*dll_rb_define_module) (const char*);
299 static void (*dll_rb_define_module_function) (VALUE,const char*,VALUE(*)(),int);
300 static void (*dll_rb_define_singleton_method) (VALUE,const char*,VALUE(*)(),int);
301 static void (*dll_rb_define_virtual_variable) (const char*,VALUE(*)(),void(*)());
302 static VALUE *dll_rb_stdout;
303 static VALUE *dll_rb_eArgError;
304 static VALUE *dll_rb_eIndexError;
305 static VALUE *dll_rb_eRuntimeError;
306 static VALUE *dll_rb_eStandardError;
307 static VALUE (*dll_rb_eval_string_protect) (const char*, int*);
308 static void (*dll_rb_global_variable) (VALUE*);
309 static VALUE (*dll_rb_hash_aset) (VALUE, VALUE, VALUE);
310 static VALUE (*dll_rb_hash_new) (void);
311 static VALUE (*dll_rb_inspect) (VALUE);
312 static VALUE (*dll_rb_int2inum) (long);
313 # if VIM_SIZEOF_INT < VIM_SIZEOF_LONG /* 64 bits only */
314 static long (*dll_rb_fix2int) (VALUE);
315 static long (*dll_rb_num2int) (VALUE);
316 static unsigned long (*dll_rb_num2uint) (VALUE);
317 # endif
318 static VALUE (*dll_rb_lastline_get) (void);
319 static void (*dll_rb_lastline_set) (VALUE);
320 static void (*dll_rb_load_protect) (VALUE, int, int*);
321 static long (*dll_rb_num2long) (VALUE);
322 static unsigned long (*dll_rb_num2ulong) (VALUE);
323 static VALUE (*dll_rb_obj_alloc) (VALUE);
324 static VALUE (*dll_rb_obj_as_string) (VALUE);
325 static VALUE (*dll_rb_obj_id) (VALUE);
326 static void (*dll_rb_raise) (VALUE, const char*, ...);
327 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
328 static VALUE (*dll_rb_string_value) (volatile VALUE*);
329 # else
330 static char *(*dll_rb_str2cstr) (VALUE,int*);
331 # endif
332 static VALUE (*dll_rb_str_cat) (VALUE, const char*, long);
333 static VALUE (*dll_rb_str_concat) (VALUE, VALUE);
334 static VALUE (*dll_rb_str_new) (const char*, long);
335 # ifdef need_rb_str_new_cstr
336 /* Ruby may #define rb_str_new2 to use rb_str_new_cstr. */
337 static VALUE (*dll_rb_str_new_cstr) (const char*);
338 # else
339 static VALUE (*dll_rb_str_new2) (const char*);
340 # endif
341 # ifdef RUBY19_OR_LATER
342 static VALUE (*dll_rb_errinfo) (void);
343 # else
344 static VALUE *dll_ruby_errinfo;
345 # endif
346 static void (*dll_ruby_init) (void);
347 static void (*dll_ruby_init_loadpath) (void);
348 # ifdef WIN3264
349 static void (*dll_NtInitialize) (int*, char***);
350 #  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
351 static int (*dll_rb_w32_snprintf)(char*, size_t, const char*, ...);
352 #  endif
353 # endif
354 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
355 static char * (*dll_rb_string_value_ptr) (volatile VALUE*);
356 static VALUE (*dll_rb_float_new) (double);
357 static VALUE (*dll_rb_ary_new) (void);
358 static VALUE (*dll_rb_ary_push) (VALUE, VALUE);
359 #  if defined(RUBY19_OR_LATER) || defined(RUBY_INIT_STACK)
360 #   ifdef __ia64
361 static void * (*dll_rb_ia64_bsp) (void);
362 static void (*dll_ruby_init_stack)(VALUE*, void*);
363 #   else
364 static void (*dll_ruby_init_stack)(VALUE*);
365 #   endif
366 #  endif
367 # endif
368 # ifdef RUBY19_OR_LATER
369 static VALUE (*dll_rb_int2big)(SIGNED_VALUE);
370 # endif
371 
372 # ifdef RUBY19_OR_LATER
373 static void (*dll_ruby_script) (const char*);
374 static int (*dll_rb_enc_find_index) (const char*);
375 static rb_encoding* (*dll_rb_enc_find) (const char*);
376 static VALUE (*dll_rb_enc_str_new) (const char*, long, rb_encoding*);
377 static VALUE (*dll_rb_sprintf) (const char*, ...);
378 static VALUE (*dll_rb_require) (const char*);
379 static void* (*ruby_process_options)(int, char**);
380 # endif
381 
382 # if defined(USE_RGENGC) && USE_RGENGC
383 static void (*dll_rb_gc_writebarrier_unprotect_promoted)(VALUE);
384 # endif
385 
386 # if defined(RUBY19_OR_LATER) && !defined(PROTO)
387 SIGNED_VALUE rb_num2long_stub(VALUE x)
388 {
389     return dll_rb_num2long(x);
390 }
391 VALUE rb_int2big_stub(SIGNED_VALUE x)
392 {
393     return dll_rb_int2big(x);
394 }
395 #  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 20 \
396 	&& VIM_SIZEOF_INT < VIM_SIZEOF_LONG
397 long rb_fix2int_stub(VALUE x)
398 {
399     return dll_rb_fix2int(x);
400 }
401 long rb_num2int_stub(VALUE x)
402 {
403     return dll_rb_num2int(x);
404 }
405 #  endif
406 #  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 20
407 VALUE
408 rb_float_new_in_heap(double d)
409 {
410     return dll_rb_float_new(d);
411 }
412 VALUE rb_num2ulong(VALUE x)
413 {
414     return (long)RSHIFT((SIGNED_VALUE)(x),1);
415 }
416 #  endif
417 # endif
418 
419 # if defined(USE_RGENGC) && USE_RGENGC
420 void rb_gc_writebarrier_unprotect_promoted_stub(VALUE obj)
421 {
422     return dll_rb_gc_writebarrier_unprotect_promoted(obj);
423 }
424 # endif
425 
426 static HINSTANCE hinstRuby = NULL; /* Instance of ruby.dll */
427 
428 /*
429  * Table of name to function pointer of ruby.
430  */
431 static struct
432 {
433     char *name;
434     RUBY_PROC *ptr;
435 } ruby_funcname_table[] =
436 {
437     {"rb_assoc_new", (RUBY_PROC*)&dll_rb_assoc_new},
438     {"rb_cFalseClass", (RUBY_PROC*)&dll_rb_cFalseClass},
439     {"rb_cFixnum", (RUBY_PROC*)&dll_rb_cFixnum},
440 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 20
441     {"rb_cFloat", (RUBY_PROC*)&dll_rb_cFloat},
442 # endif
443     {"rb_cNilClass", (RUBY_PROC*)&dll_rb_cNilClass},
444     {"rb_cObject", (RUBY_PROC*)&dll_rb_cObject},
445     {"rb_cSymbol", (RUBY_PROC*)&dll_rb_cSymbol},
446     {"rb_cTrueClass", (RUBY_PROC*)&dll_rb_cTrueClass},
447     {"rb_check_type", (RUBY_PROC*)&dll_rb_check_type},
448     {"rb_class_path", (RUBY_PROC*)&dll_rb_class_path},
449     {"rb_data_object_alloc", (RUBY_PROC*)&dll_rb_data_object_alloc},
450     {"rb_define_class_under", (RUBY_PROC*)&dll_rb_define_class_under},
451     {"rb_define_const", (RUBY_PROC*)&dll_rb_define_const},
452     {"rb_define_global_function", (RUBY_PROC*)&dll_rb_define_global_function},
453     {"rb_define_method", (RUBY_PROC*)&dll_rb_define_method},
454     {"rb_define_module", (RUBY_PROC*)&dll_rb_define_module},
455     {"rb_define_module_function", (RUBY_PROC*)&dll_rb_define_module_function},
456     {"rb_define_singleton_method", (RUBY_PROC*)&dll_rb_define_singleton_method},
457     {"rb_define_virtual_variable", (RUBY_PROC*)&dll_rb_define_virtual_variable},
458     {"rb_stdout", (RUBY_PROC*)&dll_rb_stdout},
459     {"rb_eArgError", (RUBY_PROC*)&dll_rb_eArgError},
460     {"rb_eIndexError", (RUBY_PROC*)&dll_rb_eIndexError},
461     {"rb_eRuntimeError", (RUBY_PROC*)&dll_rb_eRuntimeError},
462     {"rb_eStandardError", (RUBY_PROC*)&dll_rb_eStandardError},
463     {"rb_eval_string_protect", (RUBY_PROC*)&dll_rb_eval_string_protect},
464     {"rb_global_variable", (RUBY_PROC*)&dll_rb_global_variable},
465     {"rb_hash_aset", (RUBY_PROC*)&dll_rb_hash_aset},
466     {"rb_hash_new", (RUBY_PROC*)&dll_rb_hash_new},
467     {"rb_inspect", (RUBY_PROC*)&dll_rb_inspect},
468     {"rb_int2inum", (RUBY_PROC*)&dll_rb_int2inum},
469 # if VIM_SIZEOF_INT < VIM_SIZEOF_LONG /* 64 bits only */
470     {"rb_fix2int", (RUBY_PROC*)&dll_rb_fix2int},
471     {"rb_num2int", (RUBY_PROC*)&dll_rb_num2int},
472     {"rb_num2uint", (RUBY_PROC*)&dll_rb_num2uint},
473 # endif
474     {"rb_lastline_get", (RUBY_PROC*)&dll_rb_lastline_get},
475     {"rb_lastline_set", (RUBY_PROC*)&dll_rb_lastline_set},
476     {"rb_load_protect", (RUBY_PROC*)&dll_rb_load_protect},
477     {"rb_num2long", (RUBY_PROC*)&dll_rb_num2long},
478     {"rb_num2ulong", (RUBY_PROC*)&dll_rb_num2ulong},
479     {"rb_obj_alloc", (RUBY_PROC*)&dll_rb_obj_alloc},
480     {"rb_obj_as_string", (RUBY_PROC*)&dll_rb_obj_as_string},
481     {"rb_obj_id", (RUBY_PROC*)&dll_rb_obj_id},
482     {"rb_raise", (RUBY_PROC*)&dll_rb_raise},
483 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
484     {"rb_string_value", (RUBY_PROC*)&dll_rb_string_value},
485 # else
486     {"rb_str2cstr", (RUBY_PROC*)&dll_rb_str2cstr},
487 # endif
488     {"rb_str_cat", (RUBY_PROC*)&dll_rb_str_cat},
489     {"rb_str_concat", (RUBY_PROC*)&dll_rb_str_concat},
490     {"rb_str_new", (RUBY_PROC*)&dll_rb_str_new},
491 # ifdef need_rb_str_new_cstr
492     {"rb_str_new_cstr", (RUBY_PROC*)&dll_rb_str_new_cstr},
493 # else
494     {"rb_str_new2", (RUBY_PROC*)&dll_rb_str_new2},
495 # endif
496 # ifdef RUBY19_OR_LATER
497     {"rb_errinfo", (RUBY_PROC*)&dll_rb_errinfo},
498 # else
499     {"ruby_errinfo", (RUBY_PROC*)&dll_ruby_errinfo},
500 # endif
501     {"ruby_init", (RUBY_PROC*)&dll_ruby_init},
502     {"ruby_init_loadpath", (RUBY_PROC*)&dll_ruby_init_loadpath},
503 # ifdef WIN3264
504     {
505 #  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER < 19
506     "NtInitialize",
507 #  else
508     "ruby_sysinit",
509 #  endif
510 			(RUBY_PROC*)&dll_NtInitialize},
511 #  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
512     {"rb_w32_snprintf", (RUBY_PROC*)&dll_rb_w32_snprintf},
513 #  endif
514 # endif
515 # if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
516     {"rb_string_value_ptr", (RUBY_PROC*)&dll_rb_string_value_ptr},
517 #  if DYNAMIC_RUBY_VER <= 19
518     {"rb_float_new", (RUBY_PROC*)&dll_rb_float_new},
519 #  else
520     {"rb_float_new_in_heap", (RUBY_PROC*)&dll_rb_float_new},
521 #  endif
522     {"rb_ary_new", (RUBY_PROC*)&dll_rb_ary_new},
523     {"rb_ary_push", (RUBY_PROC*)&dll_rb_ary_push},
524 # endif
525 # ifdef RUBY19_OR_LATER
526     {"rb_int2big", (RUBY_PROC*)&dll_rb_int2big},
527     {"ruby_script", (RUBY_PROC*)&dll_ruby_script},
528     {"rb_enc_find_index", (RUBY_PROC*)&dll_rb_enc_find_index},
529     {"rb_enc_find", (RUBY_PROC*)&dll_rb_enc_find},
530     {"rb_enc_str_new", (RUBY_PROC*)&dll_rb_enc_str_new},
531     {"rb_sprintf", (RUBY_PROC*)&dll_rb_sprintf},
532     {"rb_require", (RUBY_PROC*)&dll_rb_require},
533     {"ruby_process_options", (RUBY_PROC*)&dll_ruby_process_options},
534 # endif
535 # if defined(RUBY19_OR_LATER) || defined(RUBY_INIT_STACK)
536 #  ifdef __ia64
537     {"rb_ia64_bsp", (RUBY_PROC*)&dll_rb_ia64_bsp},
538 #  endif
539     {"ruby_init_stack", (RUBY_PROC*)&dll_ruby_init_stack},
540 # endif
541 # if defined(USE_RGENGC) && USE_RGENGC
542     {"rb_gc_writebarrier_unprotect_promoted", (RUBY_PROC*)&dll_rb_gc_writebarrier_unprotect_promoted},
543 # endif
544     {"", NULL},
545 };
546 
547 /*
548  * Free ruby.dll
549  */
550     static void
551 end_dynamic_ruby()
552 {
553     if (hinstRuby)
554     {
555 	close_dll(hinstRuby);
556 	hinstRuby = NULL;
557     }
558 }
559 
560 /*
561  * Load library and get all pointers.
562  * Parameter 'libname' provides name of DLL.
563  * Return OK or FAIL.
564  */
565     static int
566 ruby_runtime_link_init(char *libname, int verbose)
567 {
568     int i;
569 
570     if (hinstRuby)
571 	return OK;
572     hinstRuby = load_dll(libname);
573     if (!hinstRuby)
574     {
575 	if (verbose)
576 	    EMSG2(_(e_loadlib), libname);
577 	return FAIL;
578     }
579 
580     for (i = 0; ruby_funcname_table[i].ptr; ++i)
581     {
582 	if (!(*ruby_funcname_table[i].ptr = symbol_from_dll(hinstRuby,
583 			ruby_funcname_table[i].name)))
584 	{
585 	    close_dll(hinstRuby);
586 	    hinstRuby = NULL;
587 	    if (verbose)
588 		EMSG2(_(e_loadfunc), ruby_funcname_table[i].name);
589 	    return FAIL;
590 	}
591     }
592     return OK;
593 }
594 
595 /*
596  * If ruby is enabled (there is installed ruby on Windows system) return TRUE,
597  * else FALSE.
598  */
599     int
600 ruby_enabled(verbose)
601     int		verbose;
602 {
603     return ruby_runtime_link_init(DYNAMIC_RUBY_DLL, verbose) == OK;
604 }
605 #endif /* defined(DYNAMIC_RUBY) || defined(PROTO) */
606 
607     void
608 ruby_end()
609 {
610 #ifdef DYNAMIC_RUBY
611     end_dynamic_ruby();
612 #endif
613 }
614 
615 void ex_ruby(exarg_T *eap)
616 {
617     int state;
618     char *script = NULL;
619 
620     script = (char *)script_get(eap, eap->arg);
621     if (!eap->skip && ensure_ruby_initialized())
622     {
623 	if (script == NULL)
624 	    rb_eval_string_protect((char *)eap->arg, &state);
625 	else
626 	    rb_eval_string_protect(script, &state);
627 	if (state)
628 	    error_print(state);
629     }
630     vim_free(script);
631 }
632 
633 /*
634  *  In Ruby 1.9 or later, ruby String object has encoding.
635  *  conversion buffer string of vim to ruby String object using
636  *  VIM encoding option.
637  */
638     static VALUE
639 vim_str2rb_enc_str(const char *s)
640 {
641 #ifdef RUBY19_OR_LATER
642     int isnum;
643     long lval;
644     char_u *sval;
645     rb_encoding *enc;
646 
647     isnum = get_option_value((char_u *)"enc", &lval, &sval, 0);
648     if (isnum == 0)
649     {
650 	enc = rb_enc_find((char *)sval);
651 	vim_free(sval);
652 	if (enc) {
653 	    return rb_enc_str_new(s, strlen(s), enc);
654 	}
655     }
656 #endif
657     return rb_str_new2(s);
658 }
659 
660     static VALUE
661 eval_enc_string_protect(const char *str, int *state)
662 {
663 #ifdef RUBY19_OR_LATER
664     int isnum;
665     long lval;
666     char_u *sval;
667     rb_encoding *enc;
668     VALUE v;
669 
670     isnum = get_option_value((char_u *)"enc", &lval, &sval, 0);
671     if (isnum == 0)
672     {
673 	enc = rb_enc_find((char *)sval);
674 	vim_free(sval);
675 	if (enc)
676 	{
677 	    v = rb_sprintf("#-*- coding:%s -*-\n%s", rb_enc_name(enc), str);
678 	    return rb_eval_string_protect(StringValuePtr(v), state);
679 	}
680     }
681 #endif
682     return rb_eval_string_protect(str, state);
683 }
684 
685 void ex_rubydo(exarg_T *eap)
686 {
687     int state;
688     linenr_T i;
689 
690     if (ensure_ruby_initialized())
691     {
692 	if (u_save(eap->line1 - 1, eap->line2 + 1) != OK)
693 	    return;
694 	for (i = eap->line1; i <= eap->line2; i++) {
695 	    VALUE line;
696 
697 	    line = vim_str2rb_enc_str((char *)ml_get(i));
698 	    rb_lastline_set(line);
699 	    eval_enc_string_protect((char *) eap->arg, &state);
700 	    if (state) {
701 		error_print(state);
702 		break;
703 	    }
704 	    line = rb_lastline_get();
705 	    if (!NIL_P(line)) {
706 		if (TYPE(line) != T_STRING) {
707 		    EMSG(_("E265: $_ must be an instance of String"));
708 		    return;
709 		}
710 		ml_replace(i, (char_u *) StringValuePtr(line), 1);
711 		changed();
712 #ifdef SYNTAX_HL
713 		syn_changed(i); /* recompute syntax hl. for this line */
714 #endif
715 	    }
716 	}
717 	check_cursor();
718 	update_curbuf(NOT_VALID);
719     }
720 }
721 
722 void ex_rubyfile(exarg_T *eap)
723 {
724     int state;
725 
726     if (ensure_ruby_initialized())
727     {
728 	rb_load_protect(rb_str_new2((char *) eap->arg), 0, &state);
729 	if (state) error_print(state);
730     }
731 }
732 
733 void ruby_buffer_free(buf_T *buf)
734 {
735     if (buf->b_ruby_ref)
736     {
737 	rb_hash_aset(objtbl, rb_obj_id((VALUE) buf->b_ruby_ref), Qnil);
738 	RDATA(buf->b_ruby_ref)->data = NULL;
739     }
740 }
741 
742 void ruby_window_free(win_T *win)
743 {
744     if (win->w_ruby_ref)
745     {
746 	rb_hash_aset(objtbl, rb_obj_id((VALUE) win->w_ruby_ref), Qnil);
747 	RDATA(win->w_ruby_ref)->data = NULL;
748     }
749 }
750 
751 static int ensure_ruby_initialized(void)
752 {
753     if (!ruby_initialized)
754     {
755 #ifdef DYNAMIC_RUBY
756 	if (ruby_enabled(TRUE))
757 	{
758 #endif
759 #ifdef _WIN32
760 	    /* suggested by Ariya Mizutani */
761 	    int argc = 1;
762 	    char *argv[] = {"gvim.exe"};
763 	    NtInitialize(&argc, &argv);
764 #endif
765 	    {
766 #if defined(RUBY19_OR_LATER) || defined(RUBY_INIT_STACK)
767 		ruby_init_stack(ruby_stack_start);
768 #endif
769 		ruby_init();
770 	    }
771 #ifdef RUBY19_OR_LATER
772 	    {
773 		int dummy_argc = 2;
774 		char *dummy_argv[] = {"vim-ruby", "-e0"};
775 		ruby_process_options(dummy_argc, dummy_argv);
776 	    }
777 	    ruby_script("vim-ruby");
778 #else
779 	    ruby_init_loadpath();
780 #endif
781 	    ruby_io_init();
782 	    ruby_vim_init();
783 	    ruby_initialized = 1;
784 #ifdef DYNAMIC_RUBY
785 	}
786 	else
787 	{
788 	    EMSG(_("E266: Sorry, this command is disabled, the Ruby library could not be loaded."));
789 	    return 0;
790 	}
791 #endif
792     }
793     return ruby_initialized;
794 }
795 
796 static void error_print(int state)
797 {
798 #ifndef DYNAMIC_RUBY
799 #if !(defined(RUBY_VERSION) && RUBY_VERSION >= 19) \
800     && !(defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 19)
801     RUBYEXTERN VALUE ruby_errinfo;
802 #endif
803 #endif
804     VALUE eclass;
805     VALUE einfo;
806     char buff[BUFSIZ];
807 
808 #define TAG_RETURN	0x1
809 #define TAG_BREAK	0x2
810 #define TAG_NEXT	0x3
811 #define TAG_RETRY	0x4
812 #define TAG_REDO	0x5
813 #define TAG_RAISE	0x6
814 #define TAG_THROW	0x7
815 #define TAG_FATAL	0x8
816 #define TAG_MASK	0xf
817 
818     switch (state) {
819     case TAG_RETURN:
820 	EMSG(_("E267: unexpected return"));
821 	break;
822     case TAG_NEXT:
823 	EMSG(_("E268: unexpected next"));
824 	break;
825     case TAG_BREAK:
826 	EMSG(_("E269: unexpected break"));
827 	break;
828     case TAG_REDO:
829 	EMSG(_("E270: unexpected redo"));
830 	break;
831     case TAG_RETRY:
832 	EMSG(_("E271: retry outside of rescue clause"));
833 	break;
834     case TAG_RAISE:
835     case TAG_FATAL:
836 #ifdef RUBY19_OR_LATER
837 	eclass = CLASS_OF(rb_errinfo());
838 	einfo = rb_obj_as_string(rb_errinfo());
839 #else
840 	eclass = CLASS_OF(ruby_errinfo);
841 	einfo = rb_obj_as_string(ruby_errinfo);
842 #endif
843 	if (eclass == rb_eRuntimeError && RSTRING_LEN(einfo) == 0) {
844 	    EMSG(_("E272: unhandled exception"));
845 	}
846 	else {
847 	    VALUE epath;
848 	    char *p;
849 
850 	    epath = rb_class_path(eclass);
851 	    vim_snprintf(buff, BUFSIZ, "%s: %s",
852 		     RSTRING_PTR(epath), RSTRING_PTR(einfo));
853 	    p = strchr(buff, '\n');
854 	    if (p) *p = '\0';
855 	    EMSG(buff);
856 	}
857 	break;
858     default:
859 	vim_snprintf(buff, BUFSIZ, _("E273: unknown longjmp status %d"), state);
860 	EMSG(buff);
861 	break;
862     }
863 }
864 
865 static VALUE vim_message(VALUE self UNUSED, VALUE str)
866 {
867     char *buff, *p;
868 
869     str = rb_obj_as_string(str);
870     if (RSTRING_LEN(str) > 0)
871     {
872 	/* Only do this when the string isn't empty, alloc(0) causes trouble. */
873 	buff = ALLOCA_N(char, RSTRING_LEN(str));
874 	strcpy(buff, RSTRING_PTR(str));
875 	p = strchr(buff, '\n');
876 	if (p) *p = '\0';
877 	MSG(buff);
878     }
879     else
880     {
881 	MSG("");
882     }
883     return Qnil;
884 }
885 
886 static VALUE vim_set_option(VALUE self UNUSED, VALUE str)
887 {
888     do_set((char_u *)StringValuePtr(str), 0);
889     update_screen(NOT_VALID);
890     return Qnil;
891 }
892 
893 static VALUE vim_command(VALUE self UNUSED, VALUE str)
894 {
895     do_cmdline_cmd((char_u *)StringValuePtr(str));
896     return Qnil;
897 }
898 
899 #ifdef FEAT_EVAL
900 static VALUE vim_to_ruby(typval_T *tv)
901 {
902     VALUE result = Qnil;
903 
904     if (tv->v_type == VAR_STRING)
905     {
906 	result = rb_str_new2(tv->vval.v_string == NULL
907 					  ? "" : (char *)(tv->vval.v_string));
908     }
909     else if (tv->v_type == VAR_NUMBER)
910     {
911 	result = INT2NUM(tv->vval.v_number);
912     }
913 # ifdef FEAT_FLOAT
914     else if (tv->v_type == VAR_FLOAT)
915     {
916 	result = rb_float_new(tv->vval.v_float);
917     }
918 # endif
919     else if (tv->v_type == VAR_LIST)
920     {
921 	list_T      *list = tv->vval.v_list;
922 	listitem_T  *curr;
923 
924 	result = rb_ary_new();
925 
926 	if (list != NULL)
927 	{
928 	    for (curr = list->lv_first; curr != NULL; curr = curr->li_next)
929 	    {
930 		rb_ary_push(result, vim_to_ruby(&curr->li_tv));
931 	    }
932 	}
933     }
934     else if (tv->v_type == VAR_DICT)
935     {
936 	result = rb_hash_new();
937 
938 	if (tv->vval.v_dict != NULL)
939 	{
940 	    hashtab_T   *ht = &tv->vval.v_dict->dv_hashtab;
941 	    long_u      todo = ht->ht_used;
942 	    hashitem_T  *hi;
943 	    dictitem_T  *di;
944 
945 	    for (hi = ht->ht_array; todo > 0; ++hi)
946 	    {
947 		if (!HASHITEM_EMPTY(hi))
948 		{
949 		    --todo;
950 
951 		    di = dict_lookup(hi);
952 		    rb_hash_aset(result, rb_str_new2((char *)hi->hi_key),
953 						     vim_to_ruby(&di->di_tv));
954 		}
955 	    }
956 	}
957     } /* else return Qnil; */
958 
959     return result;
960 }
961 #endif
962 
963 static VALUE vim_evaluate(VALUE self UNUSED, VALUE str)
964 {
965 #ifdef FEAT_EVAL
966     typval_T    *tv;
967     VALUE       result;
968 
969     tv = eval_expr((char_u *)StringValuePtr(str), NULL);
970     if (tv == NULL)
971     {
972 	return Qnil;
973     }
974     result = vim_to_ruby(tv);
975 
976     free_tv(tv);
977 
978     return result;
979 #else
980     return Qnil;
981 #endif
982 }
983 
984 static VALUE buffer_new(buf_T *buf)
985 {
986     if (buf->b_ruby_ref)
987     {
988 	return (VALUE) buf->b_ruby_ref;
989     }
990     else
991     {
992 	VALUE obj = Data_Wrap_Struct(cBuffer, 0, 0, buf);
993 	buf->b_ruby_ref = (void *) obj;
994 	rb_hash_aset(objtbl, rb_obj_id(obj), obj);
995 	return obj;
996     }
997 }
998 
999 static buf_T *get_buf(VALUE obj)
1000 {
1001     buf_T *buf;
1002 
1003     Data_Get_Struct(obj, buf_T, buf);
1004     if (buf == NULL)
1005 	rb_raise(eDeletedBufferError, "attempt to refer to deleted buffer");
1006     return buf;
1007 }
1008 
1009 static VALUE buffer_s_current()
1010 {
1011     return buffer_new(curbuf);
1012 }
1013 
1014 static VALUE buffer_s_count()
1015 {
1016     buf_T *b;
1017     int n = 0;
1018 
1019     for (b = firstbuf; b != NULL; b = b->b_next)
1020     {
1021 	/*  Deleted buffers should not be counted
1022 	 *    SegPhault - 01/07/05 */
1023 	if (b->b_p_bl)
1024 	    n++;
1025     }
1026 
1027     return INT2NUM(n);
1028 }
1029 
1030 static VALUE buffer_s_aref(VALUE self UNUSED, VALUE num)
1031 {
1032     buf_T *b;
1033     int n = NUM2INT(num);
1034 
1035     for (b = firstbuf; b != NULL; b = b->b_next)
1036     {
1037 	/*  Deleted buffers should not be counted
1038 	 *    SegPhault - 01/07/05 */
1039 	if (!b->b_p_bl)
1040 	    continue;
1041 
1042 	if (n == 0)
1043 	    return buffer_new(b);
1044 
1045 	n--;
1046     }
1047     return Qnil;
1048 }
1049 
1050 static VALUE buffer_name(VALUE self)
1051 {
1052     buf_T *buf = get_buf(self);
1053 
1054     return buf->b_ffname ? rb_str_new2((char *)buf->b_ffname) : Qnil;
1055 }
1056 
1057 static VALUE buffer_number(VALUE self)
1058 {
1059     buf_T *buf = get_buf(self);
1060 
1061     return INT2NUM(buf->b_fnum);
1062 }
1063 
1064 static VALUE buffer_count(VALUE self)
1065 {
1066     buf_T *buf = get_buf(self);
1067 
1068     return INT2NUM(buf->b_ml.ml_line_count);
1069 }
1070 
1071 static VALUE get_buffer_line(buf_T *buf, linenr_T n)
1072 {
1073     if (n <= 0 || n > buf->b_ml.ml_line_count)
1074 	rb_raise(rb_eIndexError, "line number %ld out of range", (long)n);
1075     return vim_str2rb_enc_str((char *)ml_get_buf(buf, n, FALSE));
1076 }
1077 
1078 static VALUE buffer_aref(VALUE self, VALUE num)
1079 {
1080     buf_T *buf = get_buf(self);
1081 
1082     if (buf != NULL)
1083 	return get_buffer_line(buf, (linenr_T)NUM2LONG(num));
1084     return Qnil; /* For stop warning */
1085 }
1086 
1087 static VALUE set_buffer_line(buf_T *buf, linenr_T n, VALUE str)
1088 {
1089     char	*line = StringValuePtr(str);
1090     aco_save_T	aco;
1091 
1092     if (n > 0 && n <= buf->b_ml.ml_line_count && line != NULL)
1093     {
1094 	/* set curwin/curbuf for "buf" and save some things */
1095 	aucmd_prepbuf(&aco, buf);
1096 
1097 	if (u_savesub(n) == OK) {
1098 	    ml_replace(n, (char_u *)line, TRUE);
1099 	    changed();
1100 #ifdef SYNTAX_HL
1101 	    syn_changed(n); /* recompute syntax hl. for this line */
1102 #endif
1103 	}
1104 
1105 	/* restore curwin/curbuf and a few other things */
1106 	aucmd_restbuf(&aco);
1107 	/* Careful: autocommands may have made "buf" invalid! */
1108 
1109 	update_curbuf(NOT_VALID);
1110     }
1111     else
1112     {
1113 	rb_raise(rb_eIndexError, "line number %ld out of range", (long)n);
1114     }
1115     return str;
1116 }
1117 
1118 static VALUE buffer_aset(VALUE self, VALUE num, VALUE str)
1119 {
1120     buf_T *buf = get_buf(self);
1121 
1122     if (buf != NULL)
1123 	return set_buffer_line(buf, (linenr_T)NUM2LONG(num), str);
1124     return str;
1125 }
1126 
1127 static VALUE buffer_delete(VALUE self, VALUE num)
1128 {
1129     buf_T	*buf = get_buf(self);
1130     long	n = NUM2LONG(num);
1131     aco_save_T	aco;
1132 
1133     if (n > 0 && n <= buf->b_ml.ml_line_count)
1134     {
1135 	/* set curwin/curbuf for "buf" and save some things */
1136 	aucmd_prepbuf(&aco, buf);
1137 
1138 	if (u_savedel(n, 1) == OK) {
1139 	    ml_delete(n, 0);
1140 
1141 	    /* Changes to non-active buffers should properly refresh
1142 	     *   SegPhault - 01/09/05 */
1143 	    deleted_lines_mark(n, 1L);
1144 
1145 	    changed();
1146 	}
1147 
1148 	/* restore curwin/curbuf and a few other things */
1149 	aucmd_restbuf(&aco);
1150 	/* Careful: autocommands may have made "buf" invalid! */
1151 
1152 	update_curbuf(NOT_VALID);
1153     }
1154     else
1155     {
1156 	rb_raise(rb_eIndexError, "line number %ld out of range", n);
1157     }
1158     return Qnil;
1159 }
1160 
1161 static VALUE buffer_append(VALUE self, VALUE num, VALUE str)
1162 {
1163     buf_T	*buf = get_buf(self);
1164     char	*line = StringValuePtr(str);
1165     long	n = NUM2LONG(num);
1166     aco_save_T	aco;
1167 
1168     if (line == NULL)
1169     {
1170 	rb_raise(rb_eIndexError, "NULL line");
1171     }
1172     else if (n >= 0 && n <= buf->b_ml.ml_line_count)
1173     {
1174 	/* set curwin/curbuf for "buf" and save some things */
1175 	aucmd_prepbuf(&aco, buf);
1176 
1177 	if (u_inssub(n + 1) == OK) {
1178 	    ml_append(n, (char_u *) line, (colnr_T) 0, FALSE);
1179 
1180 	    /*  Changes to non-active buffers should properly refresh screen
1181 	     *    SegPhault - 12/20/04 */
1182 	    appended_lines_mark(n, 1L);
1183 
1184 	    changed();
1185 	}
1186 
1187 	/* restore curwin/curbuf and a few other things */
1188 	aucmd_restbuf(&aco);
1189 	/* Careful: autocommands may have made "buf" invalid! */
1190 
1191 	update_curbuf(NOT_VALID);
1192     }
1193     else
1194     {
1195 	rb_raise(rb_eIndexError, "line number %ld out of range", n);
1196     }
1197     return str;
1198 }
1199 
1200 static VALUE window_new(win_T *win)
1201 {
1202     if (win->w_ruby_ref)
1203     {
1204 	return (VALUE) win->w_ruby_ref;
1205     }
1206     else
1207     {
1208 	VALUE obj = Data_Wrap_Struct(cVimWindow, 0, 0, win);
1209 	win->w_ruby_ref = (void *) obj;
1210 	rb_hash_aset(objtbl, rb_obj_id(obj), obj);
1211 	return obj;
1212     }
1213 }
1214 
1215 static win_T *get_win(VALUE obj)
1216 {
1217     win_T *win;
1218 
1219     Data_Get_Struct(obj, win_T, win);
1220     if (win == NULL)
1221 	rb_raise(eDeletedWindowError, "attempt to refer to deleted window");
1222     return win;
1223 }
1224 
1225 static VALUE window_s_current()
1226 {
1227     return window_new(curwin);
1228 }
1229 
1230 /*
1231  * Added line manipulation functions
1232  *    SegPhault - 03/07/05
1233  */
1234 static VALUE line_s_current()
1235 {
1236     return get_buffer_line(curbuf, curwin->w_cursor.lnum);
1237 }
1238 
1239 static VALUE set_current_line(VALUE self UNUSED, VALUE str)
1240 {
1241     return set_buffer_line(curbuf, curwin->w_cursor.lnum, str);
1242 }
1243 
1244 static VALUE current_line_number()
1245 {
1246     return INT2FIX((int)curwin->w_cursor.lnum);
1247 }
1248 
1249 
1250 
1251 static VALUE window_s_count()
1252 {
1253 #ifdef FEAT_WINDOWS
1254     win_T	*w;
1255     int n = 0;
1256 
1257     for (w = firstwin; w != NULL; w = w->w_next)
1258 	n++;
1259     return INT2NUM(n);
1260 #else
1261     return INT2NUM(1);
1262 #endif
1263 }
1264 
1265 static VALUE window_s_aref(VALUE self UNUSED, VALUE num)
1266 {
1267     win_T *w;
1268     int n = NUM2INT(num);
1269 
1270 #ifndef FEAT_WINDOWS
1271     w = curwin;
1272 #else
1273     for (w = firstwin; w != NULL; w = w->w_next, --n)
1274 #endif
1275 	if (n == 0)
1276 	    return window_new(w);
1277     return Qnil;
1278 }
1279 
1280 static VALUE window_buffer(VALUE self)
1281 {
1282     win_T *win = get_win(self);
1283 
1284     return buffer_new(win->w_buffer);
1285 }
1286 
1287 static VALUE window_height(VALUE self)
1288 {
1289     win_T *win = get_win(self);
1290 
1291     return INT2NUM(win->w_height);
1292 }
1293 
1294 static VALUE window_set_height(VALUE self, VALUE height)
1295 {
1296     win_T *win = get_win(self);
1297     win_T *savewin = curwin;
1298 
1299     curwin = win;
1300     win_setheight(NUM2INT(height));
1301     curwin = savewin;
1302     return height;
1303 }
1304 
1305 static VALUE window_width(VALUE self UNUSED)
1306 {
1307     return INT2NUM(W_WIDTH(get_win(self)));
1308 }
1309 
1310 static VALUE window_set_width(VALUE self UNUSED, VALUE width)
1311 {
1312 #ifdef FEAT_VERTSPLIT
1313     win_T *win = get_win(self);
1314     win_T *savewin = curwin;
1315 
1316     curwin = win;
1317     win_setwidth(NUM2INT(width));
1318     curwin = savewin;
1319 #endif
1320     return width;
1321 }
1322 
1323 static VALUE window_cursor(VALUE self)
1324 {
1325     win_T *win = get_win(self);
1326 
1327     return rb_assoc_new(INT2NUM(win->w_cursor.lnum), INT2NUM(win->w_cursor.col));
1328 }
1329 
1330 static VALUE window_set_cursor(VALUE self, VALUE pos)
1331 {
1332     VALUE lnum, col;
1333     win_T *win = get_win(self);
1334 
1335     Check_Type(pos, T_ARRAY);
1336     if (RARRAY_LEN(pos) != 2)
1337 	rb_raise(rb_eArgError, "array length must be 2");
1338     lnum = RARRAY_PTR(pos)[0];
1339     col = RARRAY_PTR(pos)[1];
1340     win->w_cursor.lnum = NUM2LONG(lnum);
1341     win->w_cursor.col = NUM2UINT(col);
1342     check_cursor();		    /* put cursor on an existing line */
1343     update_screen(NOT_VALID);
1344     return Qnil;
1345 }
1346 
1347 static VALUE f_nop(VALUE self UNUSED)
1348 {
1349     return Qnil;
1350 }
1351 
1352 static VALUE f_p(int argc, VALUE *argv, VALUE self UNUSED)
1353 {
1354     int i;
1355     VALUE str = rb_str_new("", 0);
1356 
1357     for (i = 0; i < argc; i++) {
1358 	if (i > 0) rb_str_cat(str, ", ", 2);
1359 	rb_str_concat(str, rb_inspect(argv[i]));
1360     }
1361     MSG(RSTRING_PTR(str));
1362     return Qnil;
1363 }
1364 
1365 static void ruby_io_init(void)
1366 {
1367 #ifndef DYNAMIC_RUBY
1368     RUBYEXTERN VALUE rb_stdout;
1369 #endif
1370 
1371     rb_stdout = rb_obj_alloc(rb_cObject);
1372     rb_define_singleton_method(rb_stdout, "write", vim_message, 1);
1373     rb_define_singleton_method(rb_stdout, "flush", f_nop, 0);
1374     rb_define_global_function("p", f_p, -1);
1375 }
1376 
1377 static void ruby_vim_init(void)
1378 {
1379     objtbl = rb_hash_new();
1380     rb_global_variable(&objtbl);
1381 
1382     /* The Vim module used to be called "VIM", but "Vim" is better.  Make an
1383      * alias "VIM" for backwards compatibility. */
1384     mVIM = rb_define_module("Vim");
1385     rb_define_const(rb_cObject, "VIM", mVIM);
1386     rb_define_const(mVIM, "VERSION_MAJOR", INT2NUM(VIM_VERSION_MAJOR));
1387     rb_define_const(mVIM, "VERSION_MINOR", INT2NUM(VIM_VERSION_MINOR));
1388     rb_define_const(mVIM, "VERSION_BUILD", INT2NUM(VIM_VERSION_BUILD));
1389     rb_define_const(mVIM, "VERSION_PATCHLEVEL", INT2NUM(VIM_VERSION_PATCHLEVEL));
1390     rb_define_const(mVIM, "VERSION_SHORT", rb_str_new2(VIM_VERSION_SHORT));
1391     rb_define_const(mVIM, "VERSION_MEDIUM", rb_str_new2(VIM_VERSION_MEDIUM));
1392     rb_define_const(mVIM, "VERSION_LONG", rb_str_new2(VIM_VERSION_LONG));
1393     rb_define_const(mVIM, "VERSION_LONG_DATE", rb_str_new2(VIM_VERSION_LONG_DATE));
1394     rb_define_module_function(mVIM, "message", vim_message, 1);
1395     rb_define_module_function(mVIM, "set_option", vim_set_option, 1);
1396     rb_define_module_function(mVIM, "command", vim_command, 1);
1397     rb_define_module_function(mVIM, "evaluate", vim_evaluate, 1);
1398 
1399     eDeletedBufferError = rb_define_class_under(mVIM, "DeletedBufferError",
1400 						rb_eStandardError);
1401     eDeletedWindowError = rb_define_class_under(mVIM, "DeletedWindowError",
1402 						rb_eStandardError);
1403 
1404     cBuffer = rb_define_class_under(mVIM, "Buffer", rb_cObject);
1405     rb_define_singleton_method(cBuffer, "current", buffer_s_current, 0);
1406     rb_define_singleton_method(cBuffer, "count", buffer_s_count, 0);
1407     rb_define_singleton_method(cBuffer, "[]", buffer_s_aref, 1);
1408     rb_define_method(cBuffer, "name", buffer_name, 0);
1409     rb_define_method(cBuffer, "number", buffer_number, 0);
1410     rb_define_method(cBuffer, "count", buffer_count, 0);
1411     rb_define_method(cBuffer, "length", buffer_count, 0);
1412     rb_define_method(cBuffer, "[]", buffer_aref, 1);
1413     rb_define_method(cBuffer, "[]=", buffer_aset, 2);
1414     rb_define_method(cBuffer, "delete", buffer_delete, 1);
1415     rb_define_method(cBuffer, "append", buffer_append, 2);
1416 
1417     /* Added line manipulation functions
1418      *   SegPhault - 03/07/05 */
1419     rb_define_method(cBuffer, "line_number", current_line_number, 0);
1420     rb_define_method(cBuffer, "line", line_s_current, 0);
1421     rb_define_method(cBuffer, "line=", set_current_line, 1);
1422 
1423 
1424     cVimWindow = rb_define_class_under(mVIM, "Window", rb_cObject);
1425     rb_define_singleton_method(cVimWindow, "current", window_s_current, 0);
1426     rb_define_singleton_method(cVimWindow, "count", window_s_count, 0);
1427     rb_define_singleton_method(cVimWindow, "[]", window_s_aref, 1);
1428     rb_define_method(cVimWindow, "buffer", window_buffer, 0);
1429     rb_define_method(cVimWindow, "height", window_height, 0);
1430     rb_define_method(cVimWindow, "height=", window_set_height, 1);
1431     rb_define_method(cVimWindow, "width", window_width, 0);
1432     rb_define_method(cVimWindow, "width=", window_set_width, 1);
1433     rb_define_method(cVimWindow, "cursor", window_cursor, 0);
1434     rb_define_method(cVimWindow, "cursor=", window_set_cursor, 1);
1435 
1436     rb_define_virtual_variable("$curbuf", buffer_s_current, 0);
1437     rb_define_virtual_variable("$curwin", window_s_current, 0);
1438 }
1439 
1440 void vim_ruby_init(void *stack_start)
1441 {
1442     /* should get machine stack start address early in main function */
1443     ruby_stack_start = stack_start;
1444 }
1445