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Add strings.clone_from and strings.clone_from_nul_terminated

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This commit is contained in:
gingerBill
2021-08-21 13:42:06 +01:00
parent 6504607adf
commit 38e038a1ab
1 changed files with 44 additions and 0 deletions
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44
core/strings/strings.odin
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@@ -23,6 +23,13 @@ string_from_ptr :: proc(ptr: ^byte, len: int) -> string {
return transmute(string)mem.Raw_String{ptr, len};
}
string_from_nul_terminated_ptr :: proc(ptr: ^byte, len: int) -> string {
s := transmute(string)mem.Raw_String{ptr, len};
s = truncate_to_byte(s, 0);
return s;
}
ptr_from_string :: proc(str: string) -> ^byte {
d := transmute(mem.Raw_String)str;
return d.data;
@@ -48,6 +55,43 @@ truncate_to_rune :: proc(str: string, r: rune) -> string {
return str[:n];
}
clone_from_bytes :: proc(s: []byte, allocator := context.allocator, loc := #caller_location) -> string {
c := make([]byte, len(s)+1, allocator, loc);
copy(c, s);
c[len(s)] = 0;
return string(c[:len(s)]);
}
clone_from_cstring :: proc(s: cstring, allocator := context.allocator, loc := #caller_location) -> string {
return clone(string(s), allocator, loc);
}
clone_from_ptr :: proc(ptr: ^byte, len: int, allocator := context.allocator, loc := #caller_location) -> string {
s := string_from_ptr(ptr, len);
return clone(s, allocator, loc);
}
clone_from :: proc{
clone,
clone_from_bytes,
clone_from_cstring,
clone_from_ptr,
};
clone_from_nul_terminated_bounded :: proc(ptr: cstring, len: int, allocator := context.allocator, loc := #caller_location) -> string {
s := string_from_ptr((^u8)(ptr), len);
s = truncate_to_byte(s, 0);
return clone(s, allocator, loc);
}
clone_from_nul_terminated_unbounded :: proc(ptr: cstring, allocator := context.allocator, loc := #caller_location) -> string {
s := string(ptr);
s = truncate_to_byte(s, 0);
return clone(s, allocator, loc);
}
clone_from_nul_terminated :: proc{
clone_from_nul_terminated_bounded,
clone_from_nul_terminated_unbounded,
};
// Compares two strings, returning a value representing which one comes first lexiographically.
// -1 for `a`; 1 for `b`, or 0 if they are equal.
compare :: proc(lhs, rhs: string) -> int {