mirror/v
1
0
Fork 0
mirror of https://github.com/vlang/v.git synced 2023-08-10 21:13:21 +03:00
Code Issues Projects Releases Wiki Activity

io.util: simplify random number generation in util.v

Browse Source
This commit is contained in:
Delyan Angelov 2021-09-23 14:20:39 +03:00
parent afc3531945
commit 4a0d00fb30
No known key found for this signature in database
GPG Key ID: 66886C0F12D595ED
1 changed files with 6 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
vlib/io/util/util.v
View File

@ -2,7 +2,6 @@ module util
import os
import rand
import rand.seed as rseed
const (
retries = 10000
@ -25,18 +24,14 @@ pub fn temp_file(tfo TempFileOptions) ?(os.File, string) {
' could not create temporary file in "$d". Please ensure write permissions.')
}
d = d.trim_right(os.path_separator)
mut rng := rand.new_default()
prefix, suffix := prefix_and_suffix(tfo.pattern) or { return error(@FN + ' ' + err.msg) }
for retry := 0; retry < util.retries; retry++ {
path := os.join_path(d, prefix + random_number(mut rng) + suffix)
path := os.join_path(d, prefix + random_number() + suffix)
mut mode := 'rw+'
$if windows {
mode = 'w+'
}
mut file := os.open_file(path, mode, 0o600) or {
rng.seed(rseed.time_seed_array(2))
continue
}
mut file := os.open_file(path, mode, 0o600) or { continue }
if os.exists(path) && os.is_file(path) {
return file, path
}
@ -62,14 +57,10 @@ pub fn temp_dir(tdo TempFileOptions) ?string {
' could not create temporary directory "$d". Please ensure write permissions.')
}
d = d.trim_right(os.path_separator)
mut rng := rand.new_default()
prefix, suffix := prefix_and_suffix(tdo.pattern) or { return error(@FN + ' ' + err.msg) }
for retry := 0; retry < util.retries; retry++ {
path := os.join_path(d, prefix + random_number(mut rng) + suffix)
os.mkdir_all(path) or {
rng.seed(rseed.time_seed_array(2))
continue
}
path := os.join_path(d, prefix + random_number() + suffix)
os.mkdir_all(path) or { continue }
if os.is_dir(path) && os.exists(path) {
os.is_writable_folder(path) or {
return error(@FN +
@ -83,8 +74,8 @@ pub fn temp_dir(tdo TempFileOptions) ?string {
}
// * Utility functions
fn random_number(mut rng rand.PRNG) string {
s := (u32(1e9) + (u32(os.getpid()) + rng.u32() % u32(1e9))).str()
fn random_number() string {
s := (1_000_000_000 + (u32(os.getpid()) + rand.u32n(1_000_000_000))).str()
return s.substr(1, s.len)
}