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package common
import "core:fmt"
import "core:mem"
import "core:path/filepath"
import "core:strconv"
import "core:strings"
import "core:unicode/utf8"
Uri :: struct {
uri: string,
decode_full: string,
path: string,
}
//Note(Daniel, This is an extremely incomplete uri parser and for now ignores fragment and query and only handles file schema)
parse_uri :: proc(value: string, allocator: mem.Allocator) -> (Uri, bool) {
uri: Uri
decoded, ok := decode_percent(value, allocator)
if !ok {
return uri, false
}
starts := "file:///"
start_index := len(starts)
if !starts_with(decoded, starts) {
return uri, false
}
when ODIN_OS != .Windows {
start_index -= 1
}
uri.uri = strings.clone(value, allocator)
uri.decode_full = decoded
uri.path = decoded[start_index:]
return uri, true
}
//Note(Daniel, Again some really incomplete and scuffed uri writer)
create_uri :: proc(path: string, allocator: mem.Allocator) -> Uri {
path_forward, _ := filepath.replace_path_separators(path, '/', context.temp_allocator)
builder := strings.builder_make(allocator)
//bad
when ODIN_OS == .Windows && !ODIN_TEST {
strings.write_string(&builder, "file:///")
} else {
strings.write_string(&builder, "file://")
}
strings.write_string(&builder, encode_percent(path_forward, context.temp_allocator))
uri: Uri
uri.uri = strings.to_string(builder)
uri.decode_full = strings.clone(path_forward, allocator)
uri.path = uri.decode_full
return uri
}
delete_uri :: proc(uri: Uri) {
if uri.uri != "" {
delete(uri.uri)
}
if uri.decode_full != "" {
delete(uri.decode_full)
}
}
encode_percent :: proc(value: string, allocator: mem.Allocator) -> string {
builder := strings.builder_make(allocator)
data := transmute([]u8)value
index: int
for index < len(value) {
r, w := utf8.decode_rune(data[index:])
if r > 127 || r == ':' {
for i := 0; i < w; i += 1 {
strings.write_string(
&builder,
strings.concatenate({"%", fmt.tprintf("%X", data[index + i])}, context.temp_allocator),
)
}
} else {
strings.write_byte(&builder, data[index])
}
index += w
}
return strings.to_string(builder)
}
@(private)
starts_with :: proc(value: string, starts_with: string) -> bool {
if len(value) < len(starts_with) {
return false
}
for i := 0; i < len(starts_with); i += 1 {
if value[i] != starts_with[i] {
return false
}
}
return true
}
@(private)
decode_percent :: proc(value: string, allocator: mem.Allocator) -> (string, bool) {
builder := strings.builder_make(allocator)
for i := 0; i < len(value); i += 1 {
if value[i] == '%' {
if i + 2 < len(value) {
v, ok := strconv.parse_i64_of_base(value[i + 1:i + 3], 16)
if !ok {
strings.builder_destroy(&builder)
return "", false
}
strings.write_byte(&builder, cast(byte)v)
i += 2
} else {
strings.builder_destroy(&builder)
return "", false
}
} else {
strings.write_byte(&builder, value[i])
}
}
return strings.to_string(builder), true
}
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