Add an extra optional ^int parameter to most io read/write calls allowing for simplified or_return use with incrementing byte usage

This commit is contained in:
gingerBill
2021-09-29 13:59:47 +01:00
parent 94a27224b2
commit 8e2a0be804
3 changed files with 268 additions and 225 deletions
+77 -77
View File
@@ -3,49 +3,49 @@ package io
import "core:strconv"
import "core:unicode/utf8"
read_ptr :: proc(r: Reader, p: rawptr, byte_size: int) -> (n: int, err: Error) {
return read(r, ([^]byte)(p)[:byte_size])
read_ptr :: proc(r: Reader, p: rawptr, byte_size: int, n_read: ^int = nil) -> (n: int, err: Error) {
return read(r, ([^]byte)(p)[:byte_size], n_read)
}
write_ptr :: proc(w: Writer, p: rawptr, byte_size: int) -> (n: int, err: Error) {
return write(w, ([^]byte)(p)[:byte_size])
write_ptr :: proc(w: Writer, p: rawptr, byte_size: int, n_written: ^int = nil) -> (n: int, err: Error) {
return write(w, ([^]byte)(p)[:byte_size], n_written)
}
read_ptr_at :: proc(r: Reader_At, p: rawptr, byte_size: int, offset: i64) -> (n: int, err: Error) {
return read_at(r, ([^]byte)(p)[:byte_size], offset)
read_ptr_at :: proc(r: Reader_At, p: rawptr, byte_size: int, offset: i64, n_read: ^int = nil) -> (n: int, err: Error) {
return read_at(r, ([^]byte)(p)[:byte_size], offset, n_read)
}
write_ptr_at :: proc(w: Writer_At, p: rawptr, byte_size: int, offset: i64) -> (n: int, err: Error) {
return write_at(w, ([^]byte)(p)[:byte_size], offset)
write_ptr_at :: proc(w: Writer_At, p: rawptr, byte_size: int, offset: i64, n_written: ^int = nil) -> (n: int, err: Error) {
return write_at(w, ([^]byte)(p)[:byte_size], offset, n_written)
}
write_u64 :: proc(w: Writer, i: u64, base: int = 10) -> (n: int, err: Error) {
write_u64 :: proc(w: Writer, i: u64, base: int = 10, n_written: ^int = nil) -> (n: int, err: Error) {
buf: [32]byte
s := strconv.append_bits(buf[:], i, base, false, 64, strconv.digits, nil)
return write_string(w, s)
return write_string(w, s, n_written)
}
write_i64 :: proc(w: Writer, i: i64, base: int = 10) -> (n: int, err: Error) {
write_i64 :: proc(w: Writer, i: i64, base: int = 10, n_written: ^int = nil) -> (n: int, err: Error) {
buf: [32]byte
s := strconv.append_bits(buf[:], u64(i), base, true, 64, strconv.digits, nil)
return write_string(w, s)
return write_string(w, s, n_written)
}
write_uint :: proc(w: Writer, i: uint, base: int = 10) -> (n: int, err: Error) {
return write_u64(w, u64(i), base)
write_uint :: proc(w: Writer, i: uint, base: int = 10, n_written: ^int = nil) -> (n: int, err: Error) {
return write_u64(w, u64(i), base, n_written)
}
write_int :: proc(w: Writer, i: int, base: int = 10) -> (n: int, err: Error) {
return write_i64(w, i64(i), base)
write_int :: proc(w: Writer, i: int, base: int = 10, n_written: ^int = nil) -> (n: int, err: Error) {
return write_i64(w, i64(i), base, n_written)
}
write_u128 :: proc(w: Writer, i: u128, base: int = 10) -> (n: int, err: Error) {
write_u128 :: proc(w: Writer, i: u128, base: int = 10, n_written: ^int = nil) -> (n: int, err: Error) {
buf: [32]byte
s := strconv.append_bits_128(buf[:], i, base, false, 128, strconv.digits, nil)
return write_string(w, s)
return write_string(w, s, n_written)
}
write_i128 :: proc(w: Writer, i: i128, base: int = 10) -> (n: int, err: Error) {
write_i128 :: proc(w: Writer, i: i128, base: int = 10, n_written: ^int = nil) -> (n: int, err: Error) {
buf: [32]byte
s := strconv.append_bits_128(buf[:], u128(i), base, true, 128, strconv.digits, nil)
return write_string(w, s)
return write_string(w, s, n_written)
}
@@ -54,57 +54,51 @@ write_i128 :: proc(w: Writer, i: i128, base: int = 10) -> (n: int, err: Error) {
@(private="file")
DIGITS_LOWER := "0123456789abcdefx"
@(private="file")
n_write_byte :: proc(w: Writer, b: byte, bytes_processed: ^int) -> Error {
err := write_byte(w, b)
if err == nil {
bytes_processed^ += 1
}
return err
}
n_wrapper :: proc(n: int, err: Error, bytes_processed: ^int) -> Error {
bytes_processed^ += n
return err
}
write_encoded_rune :: proc(w: Writer, r: rune, write_quote := true) -> (n: int, err: Error) {
write_encoded_rune :: proc(w: Writer, r: rune, write_quote := true, n_written: ^int = nil) -> (n: int, err: Error) {
defer if n_written != nil {
n_written^ += n
}
if write_quote {
n_write_byte(w, '\'', &n) or_return
write_byte(w, '\'', &n) or_return
}
switch r {
case '\a': n_wrapper(write_string(w, `\a"`), &n) or_return
case '\b': n_wrapper(write_string(w, `\b"`), &n) or_return
case '\e': n_wrapper(write_string(w, `\e"`), &n) or_return
case '\f': n_wrapper(write_string(w, `\f"`), &n) or_return
case '\n': n_wrapper(write_string(w, `\n"`), &n) or_return
case '\r': n_wrapper(write_string(w, `\r"`), &n) or_return
case '\t': n_wrapper(write_string(w, `\t"`), &n) or_return
case '\v': n_wrapper(write_string(w, `\v"`), &n) or_return
case '\a': write_string(w, `\a"`, &n) or_return
case '\b': write_string(w, `\b"`, &n) or_return
case '\e': write_string(w, `\e"`, &n) or_return
case '\f': write_string(w, `\f"`, &n) or_return
case '\n': write_string(w, `\n"`, &n) or_return
case '\r': write_string(w, `\r"`, &n) or_return
case '\t': write_string(w, `\t"`, &n) or_return
case '\v': write_string(w, `\v"`, &n) or_return
case:
if r < 32 {
n_wrapper(write_string(w, `\x`), &n) or_return
write_string(w, `\x`, &n) or_return
buf: [2]byte
s := strconv.append_bits(buf[:], u64(r), 16, true, 64, strconv.digits, nil)
switch len(s) {
case 0: n_wrapper(write_string(w, "00"), &n) or_return
case 1: n_write_byte(w, '0', &n) or_return
case 2: n_wrapper(write_string(w, s), &n) or_return
case 0: write_string(w, "00", &n) or_return
case 1: write_byte(w, '0', &n) or_return
case 2: write_string(w, s, &n) or_return
}
} else {
n_wrapper(write_rune(w, r), &n) or_return
write_rune(w, r, &n) or_return
}
}
if write_quote {
n_write_byte(w, '\'', &n) or_return
write_byte(w, '\'', &n) or_return
}
return
}
write_escaped_rune :: proc(w: Writer, r: rune, quote: byte, html_safe := false) -> (n: int, err: Error) {
write_escaped_rune :: proc(w: Writer, r: rune, quote: byte, html_safe := false, n_written: ^int = nil) -> (n: int, err: Error) {
is_printable :: proc(r: rune) -> bool {
if r <= 0xff {
switch r {
@@ -118,66 +112,72 @@ write_escaped_rune :: proc(w: Writer, r: rune, quote: byte, html_safe := false)
// TODO(bill): A proper unicode library will be needed!
return false
}
defer if n_written != nil {
n_written^ += n
}
if html_safe {
switch r {
case '<', '>', '&':
n_write_byte(w, '\\', &n) or_return
n_write_byte(w, 'u', &n) or_return
write_byte(w, '\\', &n) or_return
write_byte(w, 'u', &n) or_return
for s := 12; s >= 0; s -= 4 {
n_write_byte(w, DIGITS_LOWER[r>>uint(s) & 0xf], &n) or_return
write_byte(w, DIGITS_LOWER[r>>uint(s) & 0xf], &n) or_return
}
return
}
}
if r == rune(quote) || r == '\\' {
n_write_byte(w, '\\', &n) or_return
n_write_byte(w, byte(r), &n) or_return
write_byte(w, '\\', &n) or_return
write_byte(w, byte(r), &n) or_return
return
} else if is_printable(r) {
n_wrapper(write_encoded_rune(w, r, false), &n) or_return
write_encoded_rune(w, r, false, &n) or_return
return
}
switch r {
case '\a': n_wrapper(write_string(w, `\a`), &n) or_return
case '\b': n_wrapper(write_string(w, `\b`), &n) or_return
case '\e': n_wrapper(write_string(w, `\e`), &n) or_return
case '\f': n_wrapper(write_string(w, `\f`), &n) or_return
case '\n': n_wrapper(write_string(w, `\n`), &n) or_return
case '\r': n_wrapper(write_string(w, `\r`), &n) or_return
case '\t': n_wrapper(write_string(w, `\t`), &n) or_return
case '\v': n_wrapper(write_string(w, `\v`), &n) or_return
case '\a': write_string(w, `\a`, &n) or_return
case '\b': write_string(w, `\b`, &n) or_return
case '\e': write_string(w, `\e`, &n) or_return
case '\f': write_string(w, `\f`, &n) or_return
case '\n': write_string(w, `\n`, &n) or_return
case '\r': write_string(w, `\r`, &n) or_return
case '\t': write_string(w, `\t`, &n) or_return
case '\v': write_string(w, `\v`, &n) or_return
case:
switch c := r; {
case c < ' ':
n_write_byte(w, '\\', &n) or_return
n_write_byte(w, 'x', &n) or_return
n_write_byte(w, DIGITS_LOWER[byte(c)>>4], &n) or_return
n_write_byte(w, DIGITS_LOWER[byte(c)&0xf], &n) or_return
write_byte(w, '\\', &n) or_return
write_byte(w, 'x', &n) or_return
write_byte(w, DIGITS_LOWER[byte(c)>>4], &n) or_return
write_byte(w, DIGITS_LOWER[byte(c)&0xf], &n) or_return
case c > utf8.MAX_RUNE:
c = 0xfffd
fallthrough
case c < 0x10000:
n_write_byte(w, '\\', &n) or_return
n_write_byte(w, 'u', &n) or_return
write_byte(w, '\\', &n) or_return
write_byte(w, 'u', &n) or_return
for s := 12; s >= 0; s -= 4 {
n_write_byte(w, DIGITS_LOWER[c>>uint(s) & 0xf], &n) or_return
write_byte(w, DIGITS_LOWER[c>>uint(s) & 0xf], &n) or_return
}
case:
n_write_byte(w, '\\', &n) or_return
n_write_byte(w, 'U', &n) or_return
write_byte(w, '\\', &n) or_return
write_byte(w, 'U', &n) or_return
for s := 28; s >= 0; s -= 4 {
n_write_byte(w, DIGITS_LOWER[c>>uint(s) & 0xf], &n) or_return
write_byte(w, DIGITS_LOWER[c>>uint(s) & 0xf], &n) or_return
}
}
}
return
}
write_quoted_string :: proc(w: Writer, str: string, quote: byte = '"') -> (n: int, err: Error) {
n_write_byte(w, quote, &n) or_return
write_quoted_string :: proc(w: Writer, str: string, quote: byte = '"', n_written: ^int = nil) -> (n: int, err: Error) {
defer if n_written != nil {
n_written^ += n
}
write_byte(w, quote, &n) or_return
for width, s := 0, str; len(s) > 0; s = s[width:] {
r := rune(s[0])
width = 1
@@ -185,17 +185,17 @@ write_quoted_string :: proc(w: Writer, str: string, quote: byte = '"') -> (n: in
r, width = utf8.decode_rune_in_string(s)
}
if width == 1 && r == utf8.RUNE_ERROR {
n_write_byte(w, '\\', &n) or_return
n_write_byte(w, 'x', &n) or_return
n_write_byte(w, DIGITS_LOWER[s[0]>>4], &n) or_return
n_write_byte(w, DIGITS_LOWER[s[0]&0xf], &n) or_return
write_byte(w, '\\', &n) or_return
write_byte(w, 'x', &n) or_return
write_byte(w, DIGITS_LOWER[s[0]>>4], &n) or_return
write_byte(w, DIGITS_LOWER[s[0]&0xf], &n) or_return
continue
}
n_wrapper(write_escaped_rune(w, r, quote), &n) or_return
}
n_write_byte(w, quote, &n) or_return
write_byte(w, quote, &n) or_return
return
}