Move utility stuff to internal_util.odin

This commit is contained in:
gingerBill
2024-05-14 18:14:44 +01:00
parent 91b7cdaad2
commit 48c1822709
2 changed files with 84 additions and 84 deletions
+83
View File
@@ -0,0 +1,83 @@
//+private
package os2
import "base:intrinsics"
import "base:runtime"
// Splits pattern by the last wildcard "*", if it exists, and returns the prefix and suffix
// parts which are split by the last "*"
_prefix_and_suffix :: proc(pattern: string) -> (prefix, suffix: string, err: Error) {
for i in 0..<len(pattern) {
if is_path_separator(pattern[i]) {
err = .Pattern_Has_Separator
return
}
}
prefix = pattern
for i := len(pattern)-1; i >= 0; i -= 1 {
if pattern[i] == '*' {
prefix, suffix = pattern[:i], pattern[i+1:]
break
}
}
return
}
clone_string :: proc(s: string, allocator: runtime.Allocator) -> string {
buf := make([]byte, len(s), allocator)
copy(buf, s)
return string(buf)
}
concatenate_strings_from_buffer :: proc(buf: []byte, strings: ..string) -> string {
n := 0
for s in strings {
(n < len(buf)) or_break
n += copy(buf[n:], s)
}
n = min(len(buf), n)
return string(buf[:n])
}
@(private="file")
random_string_seed: [2]u64
@(init, private="file")
init_random_string_seed :: proc() {
seed := u64(intrinsics.read_cycle_counter())
s := &random_string_seed
s[0] = 0
s[1] = (seed << 1) | 1
_ = next_random(s)
s[1] += seed
_ = next_random(s)
}
next_random :: proc(r: ^[2]u64) -> u64 {
old_state := r[0]
r[0] = old_state * 6364136223846793005 + (r[1]|1)
xor_shifted := (((old_state >> 59) + 5) ~ old_state) * 12605985483714917081
rot := (old_state >> 59)
return (xor_shifted >> rot) | (xor_shifted << ((-rot) & 63))
}
random_string :: proc(buf: []byte) -> string {
@static digits := "0123456789"
u := next_random(&random_string_seed)
b :: 10
i := len(buf)
for u >= b {
i -= 1
buf[i] = digits[u % b]
u /= b
}
i -= 1
buf[i] = digits[u % b]
return string(buf[i:])
}
+1 -84
View File
@@ -1,6 +1,5 @@
package os2
import "base:intrinsics"
import "base:runtime"
@(private="file")
@@ -84,48 +83,8 @@ temp_directory :: proc(allocator: runtime.Allocator) -> (string, Error) {
}
// Splits pattern by the last wildcard "*", if it exists, and returns the prefix and suffix
// parts which are split by the last "*"
@(private)
_prefix_and_suffix :: proc(pattern: string) -> (prefix, suffix: string, err: Error) {
for i in 0..<len(pattern) {
if is_path_separator(pattern[i]) {
err = .Pattern_Has_Separator
return
}
}
prefix = pattern
for i := len(pattern)-1; i >= 0; i -= 1 {
if pattern[i] == '*' {
prefix, suffix = pattern[:i], pattern[i+1:]
break
}
}
return
}
@(private)
clone_string :: proc(s: string, allocator: runtime.Allocator) -> string {
buf := make([]byte, len(s), allocator)
copy(buf, s)
return string(buf)
}
@(private)
concatenate_strings_from_buffer :: proc(buf: []byte, strings: ..string) -> string {
n := 0
for s in strings {
(n < len(buf)) or_break
n += copy(buf[n:], s)
}
n = min(len(buf), n)
return string(buf[:n])
}
@(private)
@(private="file")
temp_join_path :: proc(dir, name: string) -> string {
concat :: proc(strings: ..string) -> string {
n := 0
@@ -146,45 +105,3 @@ temp_join_path :: proc(dir, name: string) -> string {
return concat(dir, Path_Separator_String, name)
}
@(private="file")
random_string_seed: [2]u64
@(init, private="file")
init_random_string_seed :: proc() {
seed := u64(intrinsics.read_cycle_counter())
s := &random_string_seed
s[0] = 0
s[1] = (seed << 1) | 1
_ = next_random(s)
s[1] += seed
_ = next_random(s)
}
@(private="file")
next_random :: proc(r: ^[2]u64) -> u64 {
old_state := r[0]
r[0] = old_state * 6364136223846793005 + (r[1]|1)
xor_shifted := (((old_state >> 59) + 5) ~ old_state) * 12605985483714917081
rot := (old_state >> 59)
return (xor_shifted >> rot) | (xor_shifted << ((-rot) & 63))
}
@(private="file")
random_string :: proc(buf: []byte) -> string {
@static digits := "0123456789"
u := next_random(&random_string_seed)
b :: 10
i := len(buf)
for u >= b {
i -= 1
buf[i] = digits[u % b]
u /= b
}
i -= 1
buf[i] = digits[u % b]
return string(buf[i:])
}