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module strconv
/*
printf/sprintf V implementation
Copyright (c) 2020 Dario Deledda. All rights reserved.
Use of this source code is governed by an MIT license
that can be found in the LICENSE file.
This file contains the printf/sprintf functions
*/
import strings
pub enum Align_text {
right = 0
left
center
}
/*
Float conversion utility
*/
const (
// rounding value
dec_round = [
f64(0.5),
0.05,
0.005,
0.0005,
0.00005,
0.000005,
0.0000005,
0.00000005,
0.000000005,
0.0000000005,
0.00000000005,
0.000000000005,
0.0000000000005,
0.00000000000005,
0.000000000000005,
0.0000000000000005,
0.00000000000000005,
0.000000000000000005,
0.0000000000000000005,
0.00000000000000000005,
]
)
/*
const(
// rounding value
dec_round = [
f64(0.44),
0.044,
0.0044,
0.00044,
0.000044,
0.0000044,
0.00000044,
0.000000044,
0.0000000044,
0.00000000044,
0.000000000044,
0.0000000000044,
0.00000000000044,
0.000000000000044,
0.0000000000000044,
0.00000000000000044,
0.000000000000000044,
0.0000000000000000044,
0.00000000000000000044,
0.000000000000000000044,
]
)
*/
// max float 1.797693134862315708145274237317043567981e+308
/*
Single format functions
*/
pub struct BF_param {
pub mut:
pad_ch byte = byte(` `) // padding char
len0 int = -1 // default len for whole the number or string
len1 int = 6 // number of decimal digits, if needed
positive bool = true // mandatory: the sign of the number passed
sign_flag bool // flag for print sign as prefix in padding
allign Align_text = .right // alignment of the string
rm_tail_zero bool // remove the tail zeros from floats
}
pub fn format_str(s string, p BF_param) string {
if p.len0 <= 0 {
return s.clone()
}
dif := p.len0 - utf8_str_visible_length(s)
if dif <= 0 {
return s.clone()
}
mut res := strings.new_builder(s.len + dif)
if p.allign == .right {
for i1 := 0; i1 < dif; i1++ {
res.write_b(p.pad_ch)
}
}
res.write_string(s)
if p.allign == .left {
for i1 := 0; i1 < dif; i1++ {
res.write_b(p.pad_ch)
}
}
return res.str()
}
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