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os: use arr.trim() in read_bytes, instead of a arr[0..x].clone()

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This commit is contained in:
Delyan Angelov 2021-06-08 16:52:20 +03:00
parent 40ac7d4892
commit d820f2da6f
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GPG Key ID: 66886C0F12D595ED
1 changed files with 11 additions and 12 deletions
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21
vlib/os/os_c.v
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@ -86,9 +86,8 @@ pub fn read_bytes(path string) ?[]byte {
return error('fread failed')
}
C.fclose(fp)
fres := res[0..nr_read_elements * fsize].clone()
unsafe { res.free() }
return fres
res.trim(nr_read_elements * fsize)
return res
}
// read_file reads the file in `path` and returns the contents.
@ -156,6 +155,10 @@ pub fn truncate(path string, len u64) ? {
}
}
fn eprintln_unknown_file_size() {
eprintln('os.file_size() Cannot determine file-size: ' + posix_get_error_msg(C.errno))
}
// file_size returns the size of the file located in `path`.
// If an error occurs it returns 0.
// Note that use of this on symbolic links on Windows returns always 0.
@ -166,15 +169,13 @@ pub fn file_size(path string) u64 {
$if windows {
mut swin := C.__stat64{}
if C._wstat64(&char(path.to_wide()), voidptr(&swin)) != 0 {
eprintln('os.file_size() Cannot determine file-size: ' +
posix_get_error_msg(C.errno))
eprintln_unknown_file_size()
return 0
}
return swin.st_size
} $else {
if C.stat(&char(path.str), &s) != 0 {
eprintln('os.file_size() Cannot determine file-size: ' +
posix_get_error_msg(C.errno))
eprintln_unknown_file_size()
return 0
}
return u64(s.st_size)
@ -186,15 +187,13 @@ pub fn file_size(path string) u64 {
}
$if windows {
if C._wstat(path.to_wide(), voidptr(&s)) != 0 {
eprintln('os.file_size() Cannot determine file-size: ' +
posix_get_error_msg(C.errno))
eprintln_unknown_file_size()
return 0
}
return u64(s.st_size)
} $else {
if C.stat(&char(path.str), &s) != 0 {
eprintln('os.file_size() Cannot determine file-size: ' +
posix_get_error_msg(C.errno))
eprintln_unknown_file_size()
return 0
}
return u64(s.st_size)