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Update runtime printing code

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This commit is contained in:
gingerBill
2018-10-11 18:19:29 +01:00
parent 627c91124a
commit 0971a59493
4 changed files with 73 additions and 22 deletions
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core/os/os.odin
+40
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@@ -1,6 +1,8 @@
package os
import "core:mem"
import "core:strconv"
import "core:unicode/utf8"
write_string :: proc(fd: Handle, str: string) -> (int, Errno) {
return write(fd, cast([]byte)str);
@@ -10,6 +12,44 @@ write_byte :: proc(fd: Handle, b: byte) -> (int, Errno) {
return write(fd, []byte{b});
}
write_rune :: proc(fd: Handle, r: rune) -> (int, Errno) {
if r < utf8.RUNE_SELF {
return write_byte(fd, byte(r));
}
b, n := utf8.encode_rune(r);
return write(fd, b[:n]);
}
write_encoded_rune :: proc(fd: Handle, r: rune) {
write_byte(fd, '\'');
switch r {
case '\a': write_string(fd, "\\a");
case '\b': write_string(fd, "\\b");
case '\e': write_string(fd, "\\e");
case '\f': write_string(fd, "\\f");
case '\n': write_string(fd, "\\n");
case '\r': write_string(fd, "\\r");
case '\t': write_string(fd, "\\t");
case '\v': write_string(fd, "\\v");
case:
if r < 32 {
write_string(fd, "\\x");
b: [2]byte;
s := strconv.append_bits(b[:], u64(r), 16, true, 64, strconv.digits, nil);
switch len(s) {
case 0: write_string(fd, "00");
case 1: write_rune(fd, '0');
case 2: write_string(fd, s);
}
} else {
write_rune(fd, r);
}
}
write_byte(fd, '\'');
}
read_entire_file :: proc(name: string) -> (data: []byte, success: bool) {
fd, err := open(name, O_RDONLY, 0);