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std/ascii: add spaces array

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This may be combined with std.mem.trim to form a proper replacement for
the now deprecated std.fmt.trimWhitespace().
This commit is contained in:
Isaac Freund 2020-11-02 19:06:31 +01:00 committed by Andrew Kelley
parent 909aae8153
commit 50ba018223
2 changed files with 16 additions and 3 deletions
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14
lib/std/ascii.zig
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@ -230,6 +230,20 @@ pub fn isSpace(c: u8) bool {
return inTable(c, tIndex.Space); return inTable(c, tIndex.Space);
} }
/// All the values for which isSpace() returns true. This may be used with
/// e.g. std.mem.trim() to trim whiteSpace.
pub const spaces = [_]u8{ ' ', '\t', '\n', '\r', control_code.VT, control_code.FF };
test "spaces" {
const testing = std.testing;
for (spaces) |space| testing.expect(isSpace(space));
var i: u8 = 0;
while (isASCII(i)) : (i += 1) {
if (isSpace(i)) testing.expect(std.mem.indexOfScalar(u8, &spaces, i) != null);
}
}
pub fn isUpper(c: u8) bool { pub fn isUpper(c: u8) bool {
return inTable(c, tIndex.Upper); return inTable(c, tIndex.Upper);
} }

5
lib/std/fmt.zig
View File

@ -1703,8 +1703,8 @@ fn testFmt(expected: []const u8, comptime template: []const u8, args: anytype) !
return error.TestFailed; return error.TestFailed;
} }
pub const trim = @compileError("deprecated; use std.mem.trim instead"); pub const trim = @compileError("deprecated; use std.mem.trim with std.ascii.spaces instead");
pub const isWhiteSpace = @compileError("deprecated; use std.mem.isWhiteSpace instead"); pub const isWhiteSpace = @compileError("deprecated; use std.ascii.isSpace instead");
pub fn hexToBytes(out: []u8, input: []const u8) !void { pub fn hexToBytes(out: []u8, input: []const u8) !void {
if (out.len * 2 < input.len) if (out.len * 2 < input.len)
@ -1890,4 +1890,3 @@ test "null" {
const inst = null; const inst = null;
try testFmt("null", "{}", .{inst}); try testFmt("null", "{}", .{inst});
} }