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Diffstat (limited to 'vendor/github.com/huandu/xstrings/format.go')
-rw-r--r-- | vendor/github.com/huandu/xstrings/format.go | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/vendor/github.com/huandu/xstrings/format.go b/vendor/github.com/huandu/xstrings/format.go deleted file mode 100644 index b32219bbd..000000000 --- a/vendor/github.com/huandu/xstrings/format.go +++ /dev/null @@ -1,173 +0,0 @@ -// Copyright 2015 Huan Du. All rights reserved. -// Licensed under the MIT license that can be found in the LICENSE file. - -package xstrings - -import ( - "unicode/utf8" -) - -// ExpandTabs can expand tabs ('\t') rune in str to one or more spaces dpending on -// current column and tabSize. -// The column number is reset to zero after each newline ('\n') occurring in the str. -// -// ExpandTabs uses RuneWidth to decide rune's width. -// For example, CJK characters will be treated as two characters. -// -// If tabSize <= 0, ExpandTabs panics with error. -// -// Samples: -// -// ExpandTabs("a\tbc\tdef\tghij\tk", 4) => "a bc def ghij k" -// ExpandTabs("abcdefg\thij\nk\tl", 4) => "abcdefg hij\nk l" -// ExpandTabs("z中\t文\tw", 4) => "z中 文 w" -func ExpandTabs(str string, tabSize int) string { - if tabSize <= 0 { - panic("tab size must be positive") - } - - var r rune - var i, size, column, expand int - var output *stringBuilder - - orig := str - - for len(str) > 0 { - r, size = utf8.DecodeRuneInString(str) - - if r == '\t' { - expand = tabSize - column%tabSize - - if output == nil { - output = allocBuffer(orig, str) - } - - for i = 0; i < expand; i++ { - output.WriteRune(' ') - } - - column += expand - } else { - if r == '\n' { - column = 0 - } else { - column += RuneWidth(r) - } - - if output != nil { - output.WriteRune(r) - } - } - - str = str[size:] - } - - if output == nil { - return orig - } - - return output.String() -} - -// LeftJustify returns a string with pad string at right side if str's rune length is smaller than length. -// If str's rune length is larger than length, str itself will be returned. -// -// If pad is an empty string, str will be returned. -// -// Samples: -// -// LeftJustify("hello", 4, " ") => "hello" -// LeftJustify("hello", 10, " ") => "hello " -// LeftJustify("hello", 10, "123") => "hello12312" -func LeftJustify(str string, length int, pad string) string { - l := Len(str) - - if l >= length || pad == "" { - return str - } - - remains := length - l - padLen := Len(pad) - - output := &stringBuilder{} - output.Grow(len(str) + (remains/padLen+1)*len(pad)) - output.WriteString(str) - writePadString(output, pad, padLen, remains) - return output.String() -} - -// RightJustify returns a string with pad string at left side if str's rune length is smaller than length. -// If str's rune length is larger than length, str itself will be returned. -// -// If pad is an empty string, str will be returned. -// -// Samples: -// -// RightJustify("hello", 4, " ") => "hello" -// RightJustify("hello", 10, " ") => " hello" -// RightJustify("hello", 10, "123") => "12312hello" -func RightJustify(str string, length int, pad string) string { - l := Len(str) - - if l >= length || pad == "" { - return str - } - - remains := length - l - padLen := Len(pad) - - output := &stringBuilder{} - output.Grow(len(str) + (remains/padLen+1)*len(pad)) - writePadString(output, pad, padLen, remains) - output.WriteString(str) - return output.String() -} - -// Center returns a string with pad string at both side if str's rune length is smaller than length. -// If str's rune length is larger than length, str itself will be returned. -// -// If pad is an empty string, str will be returned. -// -// Samples: -// -// Center("hello", 4, " ") => "hello" -// Center("hello", 10, " ") => " hello " -// Center("hello", 10, "123") => "12hello123" -func Center(str string, length int, pad string) string { - l := Len(str) - - if l >= length || pad == "" { - return str - } - - remains := length - l - padLen := Len(pad) - - output := &stringBuilder{} - output.Grow(len(str) + (remains/padLen+1)*len(pad)) - writePadString(output, pad, padLen, remains/2) - output.WriteString(str) - writePadString(output, pad, padLen, (remains+1)/2) - return output.String() -} - -func writePadString(output *stringBuilder, pad string, padLen, remains int) { - var r rune - var size int - - repeats := remains / padLen - - for i := 0; i < repeats; i++ { - output.WriteString(pad) - } - - remains = remains % padLen - - if remains != 0 { - for i := 0; i < remains; i++ { - r, size = utf8.DecodeRuneInString(pad) - output.WriteRune(r) - pad = pad[size:] - } - } -} |