builtin: new str(), hex() functions without C.printf

pull/3949/head
penguindark 2020-03-11 00:38:11 +01:00 committed by GitHub
parent de55a26cfe
commit 630913d872
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 216 additions and 99 deletions

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@ -395,13 +395,15 @@ pub fn (a []bool) str() string {
// of the byte elements of the array
pub fn (b []byte) hex() string {
mut hex := malloc(b.len * 2 + 1)
mut ptr := &hex[0]
for i in 0..b.len {
// QTODO
ptr += C.sprintf(ptr, '%02x', b[i])
mut dst_i := 0
for i in b {
n0 := i >> 4
hex[dst_i++] = if n0 < 10 { n0 + `0` } else { n0 + 87 }
n1 := i & 0xF
hex[dst_i++] = if n1 < 10 { n1 + `0` } else { n1 + 87 }
}
//return hex as string
return string(hex)
hex[dst_i] = `\0`
return tos(hex,dst_i)
}
// copy copies the `src` byte array elements to the `dst` byte array.

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@ -616,3 +616,13 @@ fn test_trim() {
assert arr.len == 2
assert arr.last() == 2
}
fn test_hex(){
// array hex
st := [byte(`V`),`L`,`A`,`N`,`G`]
assert st.hex() == "564c414e47"
assert st.hex().len == 10
st1 := [byte(0x41)].repeat(100)
assert st1.hex() == "41".repeat(100)
}

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@ -3,16 +3,9 @@
// that can be found in the LICENSE file.
module builtin
pub fn ptr_str(ptr voidptr) string {
buf := malloc(sizeof(double) * 5 + 1) // TODO
C.sprintf((buf), '%p', ptr)
return tos(buf, vstrlen(buf))
}
// fn (nn i32) str() string {
// return i
// }
pub fn (nn int) str() string {
/*
// old function for reference
pub fn (nn int) str1() string {
mut n := nn
if n == 0 {
return '0'
@ -40,103 +33,179 @@ pub fn (nn int) str() string {
buf[max] = `\0`
return tos(buf + max - len, len)
}
*/
pub fn (n i8) str() string {
return int(n).str()
}
pub fn (n i16) str() string {
return int(n).str()
}
pub fn (n u16) str() string {
return int(n).str()
}
pub fn (nn u32) str() string {
mut n := nn
if n == 0 {
return '0'
}
max := 16
mut buf := malloc(max)
mut len := 0
// Fill the string from the end
for n > 0 {
d := n % 10
buf[max - len - 1] = d + u32(`0`)
len++
n = n / 10
}
return tos(buf + max - len, len)
}
// ----- value to string functions -----
/*
pub fn (nn byte) str() string {
mut n := nn
if n == byte(0) {
return '0'
}
max := 5
mut buf := malloc(max)
mut len := 0
// Fill the string from the end
for n > byte(0) {
d := n % byte(10)
buf[max - len - 1] = d + byte(`0`)
len++
n = n / byte(10)
}
return tos(buf + max - len, len)
// old function for reference
pub fn ptr_str(ptr voidptr) string {
buf := malloc(sizeof(double) * 5 + 1) // TODO
C.sprintf((buf), '%p', ptr)
return tos(buf, vstrlen(buf))
}
*/
pub fn ptr_str(ptr voidptr) string {
buf1 := u64(ptr).hex()
return buf1
}
pub fn (nn i64) str() string {
const(
digit_pairs = "00102030405060708090011121314151617181910212223242526272829203132333435363738393041424344454647484940515253545556575859506162636465666768696071727374757677787970818283848586878889809192939495969798999"
)
// This implementation is the quickest with gcc -O2
[inline]
pub fn (nn int) str_l(max int) string {
mut n := nn
mut d := 0
if n == 0 {
return '0'
}
max := 32
mut buf := malloc(max)
mut len := 0
mut buf := malloc(max + 1)
mut is_neg := false
if n < 0 {
n = -n
is_neg = true
}
// Fill the string from the end
mut index := max
buf[index--] = `\0`
for n > 0 {
//d := int(n % (10 as i64))
d := n % 10
buf[max - len - 1] = d + int(`0`)
len++
n /= 10
n1 := n / 100
d = ((n - (n1 * 100)) << 1)
n = n1
buf[index--] = digit_pairs[d++]
buf[index--] = digit_pairs[d]
}
index++
// remove head zero
if d < 20 {
index++
}
// Prepend - if it's negative
if is_neg {
buf[max - len - 1] = `-`
len++
index--
buf[index] = `-`
}
return tos(buf + max - len, len)
return tos(buf + index, (max-index))
}
pub fn (n i8) str() string {
return int(n).str_l(5)
}
pub fn (n i16) str() string {
return int(n).str_l(7)
}
pub fn (n u16) str() string {
return int(n).str_l(7)
}
pub fn (n int) str() string {
return n.str_l(12)
}
pub fn (nn u32) str() string {
mut n := nn
mut d := u32(0)
if n == 0 {
return '0'
}
max := 12
mut buf := malloc(max + 1)
mut index := max
buf[index--] = `\0`
for n > 0 {
n1 := n / u32(100)
d = ((n - (n1 * u32(100))) << u32(1))
n = n1
buf[index--] = digit_pairs[d++]
buf[index--] = digit_pairs[d]
}
index++
// remove head zero
if d < u32(20) {
index++
}
return tos(buf + index, (max-index))
}
pub fn (nn i64) str() string {
mut n := nn
mut d := i64(0)
if n == 0 {
return '0'
}
max := 20
mut buf := vcalloc(max + 1)
mut is_neg := false
if n < 0 {
n = -n
is_neg = true
}
mut index := max
buf[index--] = `\0`
for n > 0 {
n1 := n / i64(100)
d = ((n - (n1 * i64(100))) << i64(1))
n = n1
buf[index--] = digit_pairs[d++]
buf[index--] = digit_pairs[d]
}
index++
// remove head zero
if d < i64(20) {
index++
}
// Prepend - if it's negative
if is_neg {
index--
buf[index] = `-`
}
return tos(buf + index, (max-index))
}
pub fn (nn u64) str() string {
mut n := nn
mut d := 0
if n == 0 {
return '0'
}
max := 32
mut buf := malloc(max)
mut len := 0
// Fill the string from the end
max := 20
mut buf := vcalloc(max + 1)
mut index := max
buf[index--] = `\0`
for n > 0 {
d := n % 10
buf[max - len - 1] = d + u64(`0`)
len++
n = n / (10)
n1 := n / 100
d = ((n - (n1 * 100)) << 1)
n = n1
buf[index--] = digit_pairs[d++]
buf[index--] = digit_pairs[d]
}
return tos(buf + max - len, len)
index++
// remove head zero
if d < 20 {
index++
}
return tos(buf + index, (max-index))
}
pub fn (b bool) str() string {
@ -146,31 +215,63 @@ pub fn (b bool) str() string {
return 'false'
}
pub fn (n int) hex() string {
// ----- value to hex string functions -----
/*
//old function for reference
pub fn (n int) hex1() string {
len := if n >= 0 { n.str().len + 3 } else { 11 }
hex := malloc(len) // 0x + \n
count := C.sprintf((hex), '0x%x', n)
return tos(hex, count)
}
*/
pub fn (n i64) hex() string {
len := if n >= 0 { n.str().len + 3 } else { 19 }
hex := malloc(len)
// TODO
//count := C.sprintf(charptr(hex), '0x%'C.PRIx64, n)
count := C.sprintf(charptr(hex), C.V64_PRINTFORMAT, n)
return tos(hex, count)
pub fn (nn int) hex() string {
mut n := u32(nn)
max := 10
mut buf := malloc(max + 1)
mut index := max
buf[index--] = `\0`
for n > 0 {
d := n & 0xF
n = n >> 4
buf[index--] = if d < 10 { d + `0` } else { d + 87 }
}
//buf[index--] = `x`
//buf[index] = `0`
index++
return tos(buf + index, (max - index))
}
pub fn (n u64) hex() string {
len := if n > 0 { n.str().len + 3 } else { 19 }
hex := malloc(len)
//count := C.sprintf(charptr(hex), '0x%'C.PRIx64, n)
count := C.sprintf(charptr(hex), C.V64_PRINTFORMAT, n)
//count := C.sprintf(charptr(hex), '0x%lx', n)
return tos(hex, count)
pub fn (nn u64) hex() string {
mut n := nn
max := 18
mut buf := malloc(max + 1)
mut index := max
buf[index--] = `\0`
for n > 0 {
d := n & 0xF
n = n >> 4
buf[index--] = if d < 10 { d + `0` } else { d + 87 }
}
//buf[index--] = `x`
//buf[index] = `0`
index++
return tos(buf + index, (max-index))
}
pub fn (nn i64) hex() string {
mut n := u64(nn)
return n.hex()
}
// ----- utilities functions -----
pub fn (a []byte) contains(val byte) bool {
for aa in a {
if aa == val {

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@ -111,7 +111,11 @@ fn test_int_alias() {
fn test_hex() {
x := u64(10)
assert x.hex() == '0xa'
assert x.hex() == 'a'
b := 1234
assert b.hex() == '4d2'
b1 := -1
assert b1.hex() == 'ffffffff'
}
fn test_oct() {