print.c

00001 /*
00002 ** print.c - Kernel.#p
00003 **
00004 ** See Copyright Notice in mruby.h
00005 */
00006 
00007 #include "mruby.h"
00008 #include "mruby/string.h"
00009 #include "mruby/variable.h"
00010 
00011 static void
00012 printstr(mrb_state *mrb, mrb_value obj)
00013 {
00014 #ifdef ENABLE_STDIO
00015   char *s;
00016   int len;
00017 
00018   if (mrb_string_p(obj)) {
00019     s = RSTRING_PTR(obj);
00020     len = RSTRING_LEN(obj);
00021     fwrite(s, len, 1, stdout);
00022   }
00023 #endif
00024 }
00025 
00026 MRB_API void
00027 mrb_p(mrb_state *mrb, mrb_value obj)
00028 {
00029 #ifdef ENABLE_STDIO
00030   obj = mrb_funcall(mrb, obj, "inspect", 0);
00031   printstr(mrb, obj);
00032   putc('\n', stdout);
00033 #endif
00034 }
00035 
00036 MRB_API void
00037 mrb_print_error(mrb_state *mrb)
00038 {
00039 #ifdef ENABLE_STDIO
00040   mrb_value s;
00041 
00042   mrb_print_backtrace(mrb);
00043   s = mrb_funcall(mrb, mrb_obj_value(mrb->exc), "inspect", 0);
00044   if (mrb_string_p(s)) {
00045     fwrite(RSTRING_PTR(s), RSTRING_LEN(s), 1, stderr);
00046     putc('\n', stderr);
00047   }
00048 #endif
00049 }
00050 
00051 MRB_API void
00052 mrb_show_version(mrb_state *mrb)
00053 {
00054   mrb_value msg;
00055 
00056   msg = mrb_const_get(mrb, mrb_obj_value(mrb->object_class), mrb_intern_lit(mrb, "MRUBY_DESCRIPTION"));
00057   printstr(mrb, msg);
00058   printstr(mrb, mrb_str_new_lit(mrb, "\n"));
00059 }
00060 
00061 MRB_API void
00062 mrb_show_copyright(mrb_state *mrb)
00063 {
00064   mrb_value msg;
00065 
00066   msg = mrb_const_get(mrb, mrb_obj_value(mrb->object_class), mrb_intern_lit(mrb, "MRUBY_COPYRIGHT"));
00067   printstr(mrb, msg);
00068   printstr(mrb, mrb_str_new_lit(mrb, "\n"));
00069 }
00070