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//+build linux, darwin, freebsd, openbsd
package os
import "core:time"
/*
For reference
-------------
Unix_File_Time :: struct {
seconds: i64,
nanoseconds: i64,
}
Stat :: struct {
device_id: u64, // ID of device containing file
serial: u64, // File serial number
nlink: u64, // Number of hard links
mode: u32, // Mode of the file
uid: u32, // User ID of the file's owner
gid: u32, // Group ID of the file's group
_padding: i32, // 32 bits of padding
rdev: u64, // Device ID, if device
size: i64, // Size of the file, in bytes
block_size: i64, // Optimal bllocksize for I/O
blocks: i64, // Number of 512-byte blocks allocated
last_access: Unix_File_Time, // Time of last access
modified: Unix_File_Time, // Time of last modification
status_change: Unix_File_Time, // Time of last status change
_reserve1,
_reserve2,
_reserve3: i64,
};
Time :: struct {
_nsec: i64, // zero is 1970-01-01 00:00:00
}
File_Info :: struct {
fullpath: string,
name: string,
size: i64,
mode: File_Mode,
is_dir: bool,
creation_time: time.Time,
modification_time: time.Time,
access_time: time.Time,
}
*/
@private
_make_time_from_unix_file_time :: proc(uft: Unix_File_Time) -> time.Time {
return time.Time{
_nsec = uft.nanoseconds + uft.seconds * 1_000_000_000,
}
}
@private
_fill_file_info_from_stat :: proc(fi: ^File_Info, s: OS_Stat) {
fi.size = s.size
fi.mode = cast(File_Mode)s.mode
fi.is_dir = S_ISDIR(s.mode)
// NOTE(laleksic, 2021-01-21): Not really creation time, but closest we can get (maybe better to leave it 0?)
fi.creation_time = _make_time_from_unix_file_time(s.status_change)
fi.modification_time = _make_time_from_unix_file_time(s.modified)
fi.access_time = _make_time_from_unix_file_time(s.last_access)
}
@private
path_base :: proc(path: string) -> string {
is_separator :: proc(c: byte) -> bool {
return c == '/'
}
if path == "" {
return "."
}
path := path
for len(path) > 0 && is_separator(path[len(path)-1]) {
path = path[:len(path)-1]
}
i := len(path)-1
for i >= 0 && !is_separator(path[i]) {
i -= 1
}
if i >= 0 {
path = path[i+1:]
}
if path == "" {
return "/"
}
return path
}
lstat :: proc(name: string, allocator := context.allocator) -> (fi: File_Info, err: Errno) {
context.allocator = allocator
s: OS_Stat
s, err = _lstat(name)
if err != ERROR_NONE {
return fi, err
}
_fill_file_info_from_stat(&fi, s)
fi.fullpath, err = absolute_path_from_relative(name)
if err != ERROR_NONE {
return
}
fi.name = path_base(fi.fullpath)
return fi, ERROR_NONE
}
stat :: proc(name: string, allocator := context.allocator) -> (fi: File_Info, err: Errno) {
context.allocator = allocator
s: OS_Stat
s, err = _stat(name)
if err != ERROR_NONE {
return fi, err
}
_fill_file_info_from_stat(&fi, s)
fi.fullpath, err = absolute_path_from_relative(name)
if err != ERROR_NONE {
return
}
fi.name = path_base(fi.fullpath)
return fi, ERROR_NONE
}
fstat :: proc(fd: Handle, allocator := context.allocator) -> (fi: File_Info, err: Errno) {
context.allocator = allocator
s: OS_Stat
s, err = _fstat(fd)
if err != ERROR_NONE {
return fi, err
}
_fill_file_info_from_stat(&fi, s)
fi.fullpath, err = absolute_path_from_handle(fd)
if err != ERROR_NONE {
return
}
fi.name = path_base(fi.fullpath)
return fi, ERROR_NONE
}
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