68 lines
1.5 KiB
V
68 lines
1.5 KiB
V
module strconv
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const base_digits = '0123456789abcdefghijklmnopqrstuvwxyz'
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// format_int returns the string representation of the number n in base `radix`
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// for digit values > 10, this function uses the small latin leters a-z.
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[direct_array_access; manualfree]
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pub fn format_int(n i64, radix int) string {
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unsafe {
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if radix < 2 || radix > 36 {
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panic('invalid radix: $radix . It should be => 2 and <= 36')
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}
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if n == 0 {
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return '0'
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}
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mut n_copy := n
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mut have_minus := false
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if n < 0 {
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have_minus = true
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n_copy = -n_copy
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}
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mut res := ''
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for n_copy != 0 {
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tmp_0 := res
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bdx := int(n_copy % radix)
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tmp_1 := strconv.base_digits[bdx].ascii_str()
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res = tmp_1 + res
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tmp_0.free()
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tmp_1.free()
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// res = base_digits[n_copy % radix].ascii_str() + res
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n_copy /= radix
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}
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if have_minus {
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final_res := '-' + res
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res.free()
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return final_res
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}
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return res
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}
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}
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// format_uint returns the string representation of the number n in base `radix`
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// for digit values > 10, this function uses the small latin leters a-z.
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[manualfree]
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pub fn format_uint(n u64, radix int) string {
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unsafe {
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if radix < 2 || radix > 36 {
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panic('invalid radix: $radix . It should be => 2 and <= 36')
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}
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if n == 0 {
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return '0'
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}
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mut n_copy := n
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mut res := ''
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uradix := u64(radix)
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for n_copy != 0 {
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tmp_0 := res
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tmp_1 := strconv.base_digits[n_copy % uradix].ascii_str()
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res = tmp_1 + res
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tmp_0.free()
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tmp_1.free()
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// res = base_digits[n_copy % uradix].ascii_str() + res
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n_copy /= uradix
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}
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return res
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}
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}
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