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package filepath
import "core:strings"
import "base:runtime"
import "core:os"
import win32 "core:sys/windows"
SEPARATOR :: '\\'
SEPARATOR_STRING :: `\`
LIST_SEPARATOR :: ';'
@(private)
reserved_names := [?]string{
"CON", "PRN", "AUX", "NUL",
"COM1", "COM2", "COM3", "COM4", "COM5", "COM6", "COM7", "COM8", "COM9",
"LPT1", "LPT2", "LPT3", "LPT4", "LPT5", "LPT6", "LPT7", "LPT8", "LPT9",
}
is_reserved_name :: proc(path: string) -> bool {
if len(path) == 0 {
return false
}
for reserved in reserved_names {
if strings.equal_fold(path, reserved) {
return true
}
}
return false
}
is_UNC :: proc(path: string) -> bool {
return volume_name_len(path) > 2
}
is_abs :: proc(path: string) -> bool {
if is_reserved_name(path) {
return true
}
l := volume_name_len(path)
if l == 0 {
return false
}
path := path
path = path[l:]
if path == "" {
return false
}
return is_slash(path[0])
}
@(private)
temp_full_path :: proc(name: string) -> (path: string, err: os.Error) {
ta := context.temp_allocator
name := name
if name == "" {
name = "."
}
p := win32.utf8_to_utf16(name, ta)
n := win32.GetFullPathNameW(cstring16(raw_data(p)), 0, nil, nil)
if n == 0 {
return "", os.get_last_error()
}
buf := make([]u16, n, ta)
n = win32.GetFullPathNameW(cstring16(raw_data(p)), u32(len(buf)), cstring16(raw_data(buf)), nil)
if n == 0 {
delete(buf)
return "", os.get_last_error()
}
return win32.utf16_to_utf8(buf[:n], ta)
}
abs :: proc(path: string, allocator := context.allocator) -> (string, bool) {
runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD(ignore = allocator == context.temp_allocator)
full_path, err := temp_full_path(path)
if err != nil {
return "", false
}
p := clean(full_path, allocator)
return p, true
}
join :: proc(elems: []string, allocator := context.allocator) -> string {
for e, i in elems {
if e != "" {
return join_non_empty(elems[i:], allocator)
}
}
return ""
}
join_non_empty :: proc(elems: []string, allocator := context.allocator) -> string {
context.allocator = allocator
runtime.DEFAULT_TEMP_ALLOCATOR_TEMP_GUARD(ignore = allocator == context.temp_allocator)
if len(elems[0]) == 2 && elems[0][1] == ':' {
i := 1
for ; i < len(elems); i += 1 {
if elems[i] != "" {
break
}
}
s := strings.join(elems[i:], SEPARATOR_STRING, context.temp_allocator)
s = strings.concatenate({elems[0], s}, context.temp_allocator)
return clean(s)
}
p := clean(strings.join(elems, SEPARATOR_STRING, context.temp_allocator))
if !is_UNC(p) {
return p
}
head := clean(elems[0], context.temp_allocator)
if is_UNC(head) {
return p
}
delete(p) // It is not needed now
tail := clean(strings.join(elems[1:], SEPARATOR_STRING, context.temp_allocator), context.temp_allocator)
if head[len(head)-1] == SEPARATOR {
return strings.concatenate({head, tail})
}
return strings.concatenate({head, SEPARATOR_STRING, tail})
}
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