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https://github.com/Ed94/Odin.git
synced 2026-06-19 04:12:22 -07:00
Move utility stuff to internal_util.odin
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@@ -0,0 +1,83 @@
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//+private
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package os2
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import "base:intrinsics"
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import "base:runtime"
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// Splits pattern by the last wildcard "*", if it exists, and returns the prefix and suffix
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// parts which are split by the last "*"
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_prefix_and_suffix :: proc(pattern: string) -> (prefix, suffix: string, err: Error) {
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for i in 0..<len(pattern) {
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if is_path_separator(pattern[i]) {
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err = .Pattern_Has_Separator
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return
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}
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}
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prefix = pattern
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for i := len(pattern)-1; i >= 0; i -= 1 {
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if pattern[i] == '*' {
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prefix, suffix = pattern[:i], pattern[i+1:]
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break
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}
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}
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return
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}
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clone_string :: proc(s: string, allocator: runtime.Allocator) -> string {
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buf := make([]byte, len(s), allocator)
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copy(buf, s)
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return string(buf)
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}
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concatenate_strings_from_buffer :: proc(buf: []byte, strings: ..string) -> string {
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n := 0
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for s in strings {
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(n < len(buf)) or_break
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n += copy(buf[n:], s)
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}
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n = min(len(buf), n)
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return string(buf[:n])
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}
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@(private="file")
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random_string_seed: [2]u64
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@(init, private="file")
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init_random_string_seed :: proc() {
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seed := u64(intrinsics.read_cycle_counter())
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s := &random_string_seed
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s[0] = 0
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s[1] = (seed << 1) | 1
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_ = next_random(s)
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s[1] += seed
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_ = next_random(s)
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}
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next_random :: proc(r: ^[2]u64) -> u64 {
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old_state := r[0]
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r[0] = old_state * 6364136223846793005 + (r[1]|1)
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xor_shifted := (((old_state >> 59) + 5) ~ old_state) * 12605985483714917081
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rot := (old_state >> 59)
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return (xor_shifted >> rot) | (xor_shifted << ((-rot) & 63))
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}
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random_string :: proc(buf: []byte) -> string {
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@static digits := "0123456789"
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u := next_random(&random_string_seed)
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b :: 10
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i := len(buf)
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for u >= b {
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i -= 1
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buf[i] = digits[u % b]
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u /= b
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}
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i -= 1
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buf[i] = digits[u % b]
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return string(buf[i:])
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}
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@@ -1,6 +1,5 @@
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package os2
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import "base:intrinsics"
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import "base:runtime"
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@(private="file")
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@@ -84,48 +83,8 @@ temp_directory :: proc(allocator: runtime.Allocator) -> (string, Error) {
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}
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// Splits pattern by the last wildcard "*", if it exists, and returns the prefix and suffix
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// parts which are split by the last "*"
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@(private)
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_prefix_and_suffix :: proc(pattern: string) -> (prefix, suffix: string, err: Error) {
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for i in 0..<len(pattern) {
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if is_path_separator(pattern[i]) {
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err = .Pattern_Has_Separator
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return
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}
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}
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prefix = pattern
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for i := len(pattern)-1; i >= 0; i -= 1 {
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if pattern[i] == '*' {
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prefix, suffix = pattern[:i], pattern[i+1:]
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break
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}
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}
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return
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}
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@(private)
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clone_string :: proc(s: string, allocator: runtime.Allocator) -> string {
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buf := make([]byte, len(s), allocator)
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copy(buf, s)
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return string(buf)
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}
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@(private)
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concatenate_strings_from_buffer :: proc(buf: []byte, strings: ..string) -> string {
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n := 0
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for s in strings {
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(n < len(buf)) or_break
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n += copy(buf[n:], s)
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}
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n = min(len(buf), n)
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return string(buf[:n])
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}
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@(private)
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@(private="file")
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temp_join_path :: proc(dir, name: string) -> string {
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concat :: proc(strings: ..string) -> string {
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n := 0
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@@ -146,45 +105,3 @@ temp_join_path :: proc(dir, name: string) -> string {
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return concat(dir, Path_Separator_String, name)
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}
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@(private="file")
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random_string_seed: [2]u64
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@(init, private="file")
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init_random_string_seed :: proc() {
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seed := u64(intrinsics.read_cycle_counter())
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s := &random_string_seed
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s[0] = 0
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s[1] = (seed << 1) | 1
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_ = next_random(s)
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s[1] += seed
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_ = next_random(s)
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}
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@(private="file")
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next_random :: proc(r: ^[2]u64) -> u64 {
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old_state := r[0]
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r[0] = old_state * 6364136223846793005 + (r[1]|1)
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xor_shifted := (((old_state >> 59) + 5) ~ old_state) * 12605985483714917081
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rot := (old_state >> 59)
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return (xor_shifted >> rot) | (xor_shifted << ((-rot) & 63))
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}
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@(private="file")
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random_string :: proc(buf: []byte) -> string {
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@static digits := "0123456789"
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u := next_random(&random_string_seed)
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b :: 10
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i := len(buf)
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for u >= b {
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i -= 1
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buf[i] = digits[u % b]
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u /= b
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}
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i -= 1
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buf[i] = digits[u % b]
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return string(buf[i:])
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}
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