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#include "mruby.h"
#include "mruby/array.h"
#include "mruby/class.h"
#include "mruby/hash.h"
#include "mruby/numeric.h"
#include "mruby/string.h"
#include "mruby/variable.h"
#include <errno.h>
#include <stdio.h>
#include <string.h>
#if MRUBY_RELEASE_NO < 10000
static struct RClass *
mrb_module_get(mrb_state *mrb, const char *name)
{
return mrb_class_get(mrb, name);
}
#endif
static mrb_value
mrb_sce_init(mrb_state *mrb, mrb_value self)
{
mrb_value c, e2c, m, str;
mrb_int n;
int argc, no_errno = 0;
char buf[20];
argc = mrb_get_args(mrb, "o|i", &m, &n);
if (argc == 1) {
if (mrb_type(m) == MRB_TT_FIXNUM) {
n = mrb_fixnum(m);
m = mrb_nil_value();
} else {
no_errno = 1;
}
}
if (!no_errno) {
e2c = mrb_const_get(mrb, mrb_obj_value(mrb_module_get(mrb, "Errno")), mrb_intern_lit(mrb, "Errno2class"));
c = mrb_hash_fetch(mrb, e2c, mrb_fixnum_value(n), mrb_nil_value());
if (!mrb_nil_p(c)) {
mrb_basic_ptr(self)->c = mrb_class_ptr(c);
str = mrb_str_new_cstr(mrb, strerror(n));
} else {
mrb_iv_set(mrb, self, mrb_intern_lit(mrb, "errno"), mrb_fixnum_value(n));
str = mrb_str_new_cstr(mrb, "Unknown error: ");
snprintf(buf, sizeof(buf), "%d", (int)n);
mrb_str_cat2(mrb, str, buf);
}
} else {
str = mrb_str_new_cstr(mrb, "unknown error");
}
if (!mrb_nil_p(m)) {
mrb_str_cat2(mrb, str, " - ");
mrb_str_append(mrb, str, m);
}
mrb_iv_set(mrb, self, mrb_intern_lit(mrb, "mesg"), str);
return self;
}
static mrb_value
mrb_sce_errno(mrb_state *mrb, mrb_value self)
{
struct RClass *c;
mrb_sym sym;
c = mrb_class(mrb, self);
sym = mrb_intern_lit(mrb, "Errno");
#if MRUBY_RELEASE_NO < 10000
if (mrb_const_defined_at(mrb, c, sym)) {
#else
if (mrb_const_defined_at(mrb, mrb_obj_value(c), sym)) {
#endif
return mrb_const_get(mrb, mrb_obj_value(c), sym);
} else {
sym = mrb_intern_lit(mrb, "errno");
return mrb_attr_get(mrb, self, sym);
}
}
static mrb_value
mrb_sce_to_s(mrb_state *mrb, mrb_value self)
{
return mrb_attr_get(mrb, self, mrb_intern_lit(mrb, "mesg"));
}
static mrb_value
mrb_sce_sys_fail(mrb_state *mrb, mrb_value cls)
{
struct RClass *cl, *sce;
mrb_value e, msg;
mrb_int no;
int argc;
char name[8];
sce = mrb_class_get(mrb, "SystemCallError");
argc = mrb_get_args(mrb, "i|S", &no, &msg);
if (argc == 1) {
e = mrb_funcall(mrb, mrb_obj_value(sce), "new", 1, mrb_fixnum_value(no));
} else {
e = mrb_funcall(mrb, mrb_obj_value(sce), "new", 2, msg, mrb_fixnum_value(no));
}
if (mrb_obj_class(mrb, e) == sce) {
snprintf(name, sizeof(name), "E%03ld", (long)no);
cl = mrb_define_class_under(mrb, mrb_module_get(mrb, "Errno"), name, sce);
mrb_define_const(mrb, cl, "Errno", mrb_fixnum_value(no));
mrb_basic_ptr(e)->c = cl;
}
mrb_exc_raise(mrb, e);
return mrb_nil_value(); /* NOTREACHED */
}
static mrb_value
mrb_exxx_init(mrb_state *mrb, mrb_value self)
{
mrb_value m, no, str;
no = mrb_const_get(mrb, mrb_obj_value(mrb_class(mrb, self)), mrb_intern_lit(mrb, "Errno"));
str = mrb_str_new_cstr(mrb, strerror(mrb_fixnum(no)));
m = mrb_nil_value();
mrb_get_args(mrb, "|S", &m);
if (!mrb_nil_p(m)) {
mrb_str_cat2(mrb, str, " - ");
mrb_str_append(mrb, str, m);
}
mrb_iv_set(mrb, self, mrb_intern_lit(mrb, "mesg"), str);
return self;
}
void
mrb_mruby_errno_gem_init(mrb_state *mrb)
{
struct RClass *e, *eno, *sce, *ste;
mrb_value h, noerror;
ste = mrb_class_get(mrb, "StandardError");
sce = mrb_define_class(mrb, "SystemCallError", ste);
mrb_define_class_method(mrb, sce, "_sys_fail", mrb_sce_sys_fail, MRB_ARGS_REQ(1));
mrb_define_method(mrb, sce, "errno", mrb_sce_errno, MRB_ARGS_NONE());
mrb_define_method(mrb, sce, "to_s", mrb_sce_to_s, MRB_ARGS_NONE());
mrb_define_method(mrb, sce, "initialize", mrb_sce_init, MRB_ARGS_ARG(1, 1));
eno = mrb_define_module(mrb, "Errno");
h = mrb_hash_new(mrb);
mrb_define_const(mrb, eno, "Errno2class", h);
e = mrb_define_class_under(mrb, eno, "NOERROR", sce);
mrb_define_const(mrb, e, "Errno", mrb_fixnum_value(0));
mrb_define_method(mrb, e, "initialize", mrb_exxx_init, MRB_ARGS_OPT(1));
//mrb_define_method(mrb, e, "===", mrb_exxx_cmp, MRB_ARGS_REQ(1));
noerror = mrb_obj_value(e);
#define itsdefined(SYM) \
do { \
int ai = mrb_gc_arena_save(mrb); \
e = mrb_define_class_under(mrb, eno, #SYM, sce); \
mrb_define_const(mrb, e, "Errno", mrb_fixnum_value(SYM)); \
mrb_define_method(mrb, e, "initialize", mrb_exxx_init, MRB_ARGS_OPT(1)); \
mrb_hash_set(mrb, h, mrb_fixnum_value(SYM), mrb_obj_value(e)); \
mrb_gc_arena_restore(mrb, ai); \
} while (0)
#define itsnotdefined(SYM) \
do { \
mrb_define_const(mrb, eno, #SYM, noerror); \
} while (0)
#include "known_errors_def.cstub"
}
void
mrb_mruby_errno_gem_final(mrb_state *mrb)
{
}
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