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/*
** dir.c - Dir
**
** See Copyright Notice in mruby.h
*/
#include "mruby.h"
#include "mruby/class.h"
#include "mruby/data.h"
#include "mruby/string.h"
#include "error.h"
#include <sys/types.h>
#if defined(_WIN32) || defined(_WIN64)
#define MAXPATHLEN 1024
#if !defined(PATH_MAX)
#define PATH_MAX MAX_PATH
#endif
#define S_ISDIR(B) ((B)&_S_IFDIR)
#include "Win/dirent.c"
#include <direct.h>
#define rmdir _rmdir
#define getcwd _getcwd
#define mkdir _mkdir
#define chdir _chdir
#else
#include <sys/param.h>
#include <dirent.h>
#include <unistd.h>
#endif
#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <string.h>
/* with/without IO module */
#ifdef ENABLE_IO
#include "mruby/ext/io.h"
#else
#define E_IO_ERROR E_RUNTIME_ERROR
#endif
struct mrb_dir {
DIR *dir;
};
void
mrb_dir_free(mrb_state *mrb, void *ptr)
{
struct mrb_dir *mdir = ptr;
if (mdir->dir) {
closedir(mdir->dir);
mdir->dir = NULL;
}
mrb_free(mrb, mdir);
}
static struct mrb_data_type mrb_dir_type = { "DIR", mrb_dir_free };
mrb_value
mrb_dir_close(mrb_state *mrb, mrb_value self)
{
struct mrb_dir *mdir;
mdir = (struct mrb_dir *)mrb_get_datatype(mrb, self, &mrb_dir_type);
if (!mdir) return mrb_nil_value();
if (!mdir->dir) {
mrb_raise(mrb, E_IO_ERROR, "closed directory");
}
if (closedir(mdir->dir) == -1) {
mrb_sys_fail(mrb, "closedir");
}
mdir->dir = NULL;
return mrb_nil_value();
}
mrb_value
mrb_dir_init(mrb_state *mrb, mrb_value self)
{
DIR *dir;
struct mrb_dir *mdir;
mrb_value path;
char *cpath;
mdir = (struct mrb_dir *)DATA_PTR(self);
if (mdir) {
mrb_dir_free(mrb, mdir);
}
DATA_TYPE(self) = &mrb_dir_type;
DATA_PTR(self) = NULL;
mdir = (struct mrb_dir *)mrb_malloc(mrb, sizeof(*mdir));
mdir->dir = NULL;
DATA_PTR(self) = mdir;
mrb_get_args(mrb, "S", &path);
cpath = mrb_str_to_cstr(mrb, path);
if ((dir = opendir(cpath)) == NULL) {
mrb_sys_fail(mrb, cpath);
}
mdir->dir = dir;
return self;
}
mrb_value
mrb_dir_delete(mrb_state *mrb, mrb_value klass)
{
mrb_value path;
char *cpath;
mrb_get_args(mrb, "S", &path);
cpath = mrb_str_to_cstr(mrb, path);
if (rmdir(cpath) == -1) {
mrb_sys_fail(mrb, cpath);
}
return mrb_fixnum_value(0);
}
mrb_value
mrb_dir_existp(mrb_state *mrb, mrb_value klass)
{
mrb_value path;
struct stat sb;
char *cpath;
mrb_get_args(mrb, "S", &path);
cpath = mrb_str_to_cstr(mrb, path);
if (stat(cpath, &sb) == 0 && S_ISDIR(sb.st_mode)) {
return mrb_true_value();
} else {
return mrb_false_value();
}
}
mrb_value
mrb_dir_getwd(mrb_state *mrb, mrb_value klass)
{
mrb_value path;
path = mrb_str_buf_new(mrb, MAXPATHLEN);
if (getcwd(RSTRING_PTR(path), MAXPATHLEN) == NULL) {
mrb_sys_fail(mrb, "getcwd(2)");
}
mrb_str_resize(mrb, path, strlen(RSTRING_PTR(path)));
return path;
}
mrb_value
mrb_dir_mkdir(mrb_state *mrb, mrb_value klass)
{
mrb_int mode;
mrb_value spath;
char *path;
mode = 0777;
mrb_get_args(mrb, "S|i", &spath, &mode);
path = mrb_str_to_cstr(mrb, spath);
#ifndef _WIN32
if (mkdir(path, mode) == -1) {
#else
if (mkdir(path) == -1) {
#endif
mrb_sys_fail(mrb, path);
}
return mrb_fixnum_value(0);
}
mrb_value
mrb_dir_chdir(mrb_state *mrb, mrb_value klass)
{
mrb_value spath;
char *path;
mrb_get_args(mrb, "S", &spath);
path = mrb_str_to_cstr(mrb, spath);
if (chdir(path) == -1) {
mrb_sys_fail(mrb, path);
}
return mrb_fixnum_value(0);
}
mrb_value
mrb_dir_read(mrb_state *mrb, mrb_value self)
{
struct mrb_dir *mdir;
struct dirent *dp;
mdir = (struct mrb_dir *)mrb_get_datatype(mrb, self, &mrb_dir_type);
if (!mdir) return mrb_nil_value();
if (!mdir->dir) {
mrb_raise(mrb, E_IO_ERROR, "closed directory");
}
dp = readdir(mdir->dir);
if (dp != NULL) {
return mrb_str_new_cstr(mrb, dp->d_name);
} else {
return mrb_nil_value();
}
}
mrb_value
mrb_dir_rewind(mrb_state *mrb, mrb_value self)
{
struct mrb_dir *mdir;
mdir = (struct mrb_dir *)mrb_get_datatype(mrb, self, &mrb_dir_type);
if (!mdir) return mrb_nil_value();
if (!mdir->dir) {
mrb_raise(mrb, E_IO_ERROR, "closed directory");
}
rewinddir(mdir->dir);
return self;
}
mrb_value
mrb_dir_seek(mrb_state *mrb, mrb_value self)
{
#if defined(_WIN32) || defined(_WIN64) || defined(__android__)
mrb_raise(mrb, E_RUNTIME_ERROR, "dirseek() unreliable on Win platforms");
return self;
#else
struct mrb_dir *mdir;
mrb_int pos;
mdir = (struct mrb_dir *)mrb_get_datatype(mrb, self, &mrb_dir_type);
if (!mdir) return mrb_nil_value();
if (!mdir->dir) {
mrb_raise(mrb, E_IO_ERROR, "closed directory");
}
mrb_get_args(mrb, "i", &pos);
seekdir(mdir->dir, (long)pos);
return self;
#endif
}
mrb_value
mrb_dir_tell(mrb_state *mrb, mrb_value self)
{
#if defined(_WIN32) || defined(_WIN64) || defined(__android__)
mrb_raise(mrb, E_RUNTIME_ERROR, "dirtell() unreliable on Win platforms");
return mrb_fixnum_value(0);
#else
struct mrb_dir *mdir;
mrb_int pos;
mdir = (struct mrb_dir *)mrb_get_datatype(mrb, self, &mrb_dir_type);
if (!mdir) return mrb_nil_value();
if (!mdir->dir) {
mrb_raise(mrb, E_IO_ERROR, "closed directory");
}
pos = (mrb_int)telldir(mdir->dir);
return mrb_fixnum_value(pos);
#endif
}
void
mrb_mruby_dir_gem_init(mrb_state *mrb)
{
struct RClass *d;
d = mrb_define_class(mrb, "Dir", mrb->object_class);
MRB_SET_INSTANCE_TT(d, MRB_TT_DATA);
mrb_define_class_method(mrb, d, "delete", mrb_dir_delete, MRB_ARGS_REQ(1));
mrb_define_class_method(mrb, d, "exist?", mrb_dir_existp, MRB_ARGS_REQ(1));
mrb_define_class_method(mrb, d, "getwd", mrb_dir_getwd, MRB_ARGS_NONE());
mrb_define_class_method(mrb, d, "mkdir", mrb_dir_mkdir, MRB_ARGS_REQ(1)|MRB_ARGS_OPT(1));
mrb_define_class_method(mrb, d, "_chdir", mrb_dir_chdir, MRB_ARGS_REQ(1));
mrb_define_method(mrb, d, "close", mrb_dir_close, MRB_ARGS_NONE());
mrb_define_method(mrb, d, "initialize", mrb_dir_init, MRB_ARGS_REQ(1));
mrb_define_method(mrb, d, "read", mrb_dir_read, MRB_ARGS_NONE());
mrb_define_method(mrb, d, "rewind", mrb_dir_rewind, MRB_ARGS_NONE());
mrb_define_method(mrb, d, "seek", mrb_dir_seek, MRB_ARGS_REQ(1));
mrb_define_method(mrb, d, "tell", mrb_dir_tell, MRB_ARGS_NONE());
}
void
mrb_mruby_dir_gem_final(mrb_state *mrb)
{
}
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