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run vfmt on vlib/builtin
This commit is contained in:
Alexander Medvednikov
@@ -1,38 +1,46 @@
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// Copyright (c) 2019 Alexander Medvednikov. All rights reserved.
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// Use of this source code is governed by an MIT license
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// that can be found in the LICENSE file.
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module builtin
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pub fn utf8_char_len(b byte) int {
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return (( 0xe5000000 >> (( b >> 3 ) & 0x1e )) & 3 ) + 1
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return ((0xe5000000>>((b>>3) & 0x1e)) & 3) + 1
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}
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// Convert utf32 to utf8
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// utf32 == Codepoint
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pub fn utf32_to_str(code u32) string {
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icode := int(code) //Prevents doing casts everywhere
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mut buffer := malloc(5)
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if icode <= 127 /* 0x7F */ {
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icode := int(code) // Prevents doing casts everywhere
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mut buffer := malloc(5)
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if icode <= 127/* 0x7F */ {
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buffer[0] = icode
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return tos(buffer, 1)
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}
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if (icode <= 2047 /* 0x7FF */) {
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buffer[0] = 192 /*0xC0*/ | (icode >> 6) /* 110xxxxx */
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buffer[1] = 128 /*0x80*/ | (icode & 63 /*0x3F*/) /* 10xxxxxx */
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if (icode <= 2047/* 0x7FF */) {
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buffer[0] = 192/*0xC0*/ | (icode>>6)/* 110xxxxx */
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buffer[1] = 128/*0x80*/ | (icode & 63/*0x3F*/)/* 10xxxxxx */
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return tos(buffer, 2)
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}
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if (icode <= 65535 /* 0xFFFF */) {
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buffer[0] = 224 /*0xE0*/ | (icode >> 12) /* 1110xxxx */
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buffer[1] = 128 /*0x80*/ | ((icode >> 6) & 63 /*0x3F*/) /* 10xxxxxx */
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buffer[2] = 128 /*0x80*/ | (icode & 63 /*0x3F*/) /* 10xxxxxx */
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if (icode <= 65535/* 0xFFFF */) {
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buffer[0] = 224/*0xE0*/ | (icode>>12)/* 1110xxxx */
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buffer[1] = 128/*0x80*/ | ((icode>>6) & 63/*0x3F*/)/* 10xxxxxx */
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buffer[2] = 128/*0x80*/ | (icode & 63/*0x3F*/)/* 10xxxxxx */
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return tos(buffer, 3)
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}
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if (icode <= 1114111 /* 0x10FFFF */) {
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buffer[0] = 240 /*0xF0*/ | (icode >> 18) /* 11110xxx */
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buffer[1] = 128 /*0x80*/ | ((icode >> 12) & 63 /*0x3F*/) /* 10xxxxxx */
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buffer[2] = 128 /*0x80*/ | ((icode >> 6) & 63 /*0x3F*/) /* 10xxxxxx */
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buffer[3] = 128 /*0x80*/ | (icode & 63 /*0x3F*/) /* 10xxxxxx */
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if (icode <= 1114111/* 0x10FFFF */) {
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buffer[0] = 240/*0xF0*/ | (icode>>18)/* 11110xxx */
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buffer[1] = 128/*0x80*/ | ((icode>>12) & 63/*0x3F*/)/* 10xxxxxx */
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buffer[2] = 128/*0x80*/ | ((icode>>6) & 63/*0x3F*/)/* 10xxxxxx */
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buffer[3] = 128/*0x80*/ | (icode & 63/*0x3F*/)/* 10xxxxxx */
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return tos(buffer, 4)
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}
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return ''
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@@ -40,28 +48,37 @@ pub fn utf32_to_str(code u32) string {
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// TODO copypasta
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pub fn utf32_to_str_no_malloc(code u32, buf voidptr) string {
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icode := int(code) //Prevents doing casts everywhere
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mut buffer := byteptr(buf)
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if icode <= 127 /* 0x7F */ {
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icode := int(code) // Prevents doing casts everywhere
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mut buffer := byteptr(buf)
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if icode <= 127/* 0x7F */ {
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buffer[0] = icode
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return tos(buffer, 1)
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}
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if (icode <= 2047 /* 0x7FF */) {
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buffer[0] = 192 /*0xC0*/ | (icode >> 6) /* 110xxxxx */
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buffer[1] = 128 /*0x80*/ | (icode & 63 /*0x3F*/) /* 10xxxxxx */
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if (icode <= 2047/* 0x7FF */) {
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buffer[0] = 192/*0xC0*/ | (icode>>6)/* 110xxxxx */
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buffer[1] = 128/*0x80*/ | (icode & 63/*0x3F*/)/* 10xxxxxx */
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return tos(buffer, 2)
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}
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if (icode <= 65535 /* 0xFFFF */) {
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buffer[0] = 224 /*0xE0*/ | (icode >> 12) /* 1110xxxx */
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buffer[1] = 128 /*0x80*/ | ((icode >> 6) & 63 /*0x3F*/) /* 10xxxxxx */
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buffer[2] = 128 /*0x80*/ | (icode & 63 /*0x3F*/) /* 10xxxxxx */
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if (icode <= 65535/* 0xFFFF */) {
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buffer[0] = 224/*0xE0*/ | (icode>>12)/* 1110xxxx */
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buffer[1] = 128/*0x80*/ | ((icode>>6) & 63/*0x3F*/)/* 10xxxxxx */
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buffer[2] = 128/*0x80*/ | (icode & 63/*0x3F*/)/* 10xxxxxx */
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return tos(buffer, 3)
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}
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if (icode <= 1114111 /* 0x10FFFF */) {
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buffer[0] = 240 /*0xF0*/ | (icode >> 18) /* 11110xxx */
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buffer[1] = 128 /*0x80*/ | ((icode >> 12) & 63 /*0x3F*/) /* 10xxxxxx */
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buffer[2] = 128 /*0x80*/ | ((icode >> 6) & 63 /*0x3F*/) /* 10xxxxxx */
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buffer[3] = 128 /*0x80*/ | (icode & 63 /*0x3F*/) /* 10xxxxxx */
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if (icode <= 1114111/* 0x10FFFF */) {
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buffer[0] = 240/*0xF0*/ | (icode>>18)/* 11110xxx */
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buffer[1] = 128/*0x80*/ | ((icode>>12) & 63/*0x3F*/)/* 10xxxxxx */
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buffer[2] = 128/*0x80*/ | ((icode>>6) & 63/*0x3F*/)/* 10xxxxxx */
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buffer[3] = 128/*0x80*/ | (icode & 63/*0x3F*/)/* 10xxxxxx */
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return tos(buffer, 4)
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}
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return ''
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@@ -79,12 +96,12 @@ pub fn (_rune string) utf32_code() int {
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mut b := byte(int(_rune[0]))
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// TODO should be
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// res := int( rune[0] << rune.len)
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b = b << _rune.len
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b = b<<_rune.len
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mut res := int(b)
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mut shift := 6 - _rune.len
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for i := 1; i < _rune.len; i++ {
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c := int(_rune[i])
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res = res << shift
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res = res<<shift
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res |= c & 63 // 0x3f
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shift = 6
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}
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@@ -92,8 +109,8 @@ pub fn (_rune string) utf32_code() int {
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}
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const (
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CP_UTF8 = 65001
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)
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CP_UTF8 = 65001
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)
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pub fn (_str string) to_wide() &u16 {
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$if windows {
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@@ -110,72 +127,82 @@ pub fn (_str string) to_wide() &u16 {
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}
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pub fn string_from_wide(_wstr &u16) string {
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$if windows {
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wstr_len := C.wcslen(_wstr)
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return string_from_wide2(_wstr, wstr_len)
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} $else {
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return ''
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}
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$if windows {
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wstr_len := C.wcslen(_wstr)
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return string_from_wide2(_wstr, wstr_len)
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} $else {
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return ''
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}
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}
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pub fn string_from_wide2(_wstr &u16, len int) string {
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$if windows {
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num_chars := C.WideCharToMultiByte(CP_UTF8, 0, _wstr, len, 0, 0, 0, 0)
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mut str_to := malloc(num_chars + 1)
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if !isnil(str_to) {
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C.WideCharToMultiByte(CP_UTF8, 0, _wstr, len, str_to, num_chars, 0, 0)
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C.memset(str_to + num_chars, 0, 1)
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}
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return tos2(str_to)
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} $else {
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return ''
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}
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$if windows {
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num_chars := C.WideCharToMultiByte(CP_UTF8, 0, _wstr, len, 0, 0, 0, 0)
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mut str_to := malloc(num_chars + 1)
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if !isnil(str_to) {
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C.WideCharToMultiByte(CP_UTF8, 0, _wstr, len, str_to, num_chars, 0, 0)
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C.memset(str_to + num_chars, 0, 1)
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}
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return tos2(str_to)
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} $else {
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return ''
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}
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}
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// Calculate length to read from the first byte
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fn utf8_len(c byte) int {
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mut b := 0
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mut x := c
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if ((x & 240) != 0) { //0xF0
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x >>= 4
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} else {
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b += 4
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}
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if ((x & 12) != 0) { //0x0C
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x >>= 2
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} else {
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b += 2
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}
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if ((x & 2) == 0) { //0x02
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b++
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}
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return b
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mut b := 0
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mut x := c
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if ((x & 240) != 0) {
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// 0xF0
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x >>= 4
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}
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else {
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b += 4
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}
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if ((x & 12) != 0) {
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// 0x0C
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x >>= 2
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}
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else {
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b += 2
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}
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if ((x & 2) == 0) {
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// 0x02
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b++
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}
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return b
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}
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// Reads an utf8 character from standard input
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pub fn utf8_getchar() int {
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c := C.getchar()
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len := utf8_len(~c)
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if c < 0 {
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return 0
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} else if len == 0 {
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return c
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} else if len == 1 {
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return -1
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} else {
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mut uc := c & ((1 << (7 - len)) - 1)
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for i := 0; i + 1 < len; i++ {
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c2 := C.getchar()
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if c2 != -1 && (c2 >> 6) == 2 {
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uc <<= 6
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uc |= (c2 & 63)
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} else if c2 == -1 {
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return 0
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} else {
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return -1
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}
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}
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return uc
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}
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c := C.getchar()
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len := utf8_len(~c)
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if c < 0 {
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return 0
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}
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else if len == 0 {
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return c
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}
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else if len == 1 {
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return -1
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}
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else {
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mut uc := c & ((1<<(7 - len)) - 1)
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for i := 0; i + 1 < len; i++ {
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c2 := C.getchar()
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if c2 != -1 && (c2>>6) == 2 {
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uc <<= 6
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uc |= (c2 & 63)
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}
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else if c2 == -1 {
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return 0
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}
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else {
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return -1
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}
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}
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return uc
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}
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}
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