vertical-tab
parent
230937cb2e
commit
cb88f405d8
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@ -5,6 +5,7 @@ Package **eol** implements tools for working with end-of-line, for the Go progra
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The end-of-line sequences it supports is:
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* `"\n" // line-feed (LF)`
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* `"\v" // vertical-tab (VT)`
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* `"\n\r" // line-feed (LF), carriage-return (CR)`
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* `"\r" // carriage-return (CR)`
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* `"\r\n" // carriage-return (CR), line-feed (LF)`
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@ -28,6 +28,8 @@ import (
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//
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// var circumstance internalCircumstance = specifyCircumstance(opt.Something]("\n"), 1)
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//
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// var circumstance internalCircumstance = specifyCircumstance(opt.Something]("\v"), 1)
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//
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// var circumstance internalCircumstance = specifyCircumstance(opt.Something]("\r"), 1)
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//
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// var circumstance internalCircumstance = specifyCircumstance(opt.Something]("\r\n"), 1)
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@ -9,6 +9,7 @@ import (
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"sourcecode.social/reiver/go-eol/lf"
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"sourcecode.social/reiver/go-eol/ls"
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"sourcecode.social/reiver/go-eol/nel"
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"sourcecode.social/reiver/go-eol/vt"
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)
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var _ error = internalNotFoundError{}
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@ -46,6 +47,12 @@ func (receiver internalNotFoundError) Error() string {
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s = fmt.Sprintf(`eol: line-feed (LF) character ('\n') (U+000A) not found for end-of-line sequence %q character №%d — instead found %q (%U)`, sequence, characterNumber, actual, actual)
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})
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p = append(p, s...)
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case vt.Rune:
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var s string = fmt.Sprintf(`eol: vertical-tab (VT) character ('\v') (U+000B) not found for end-of-line sequence character №%d — instead found %q (%U)`, characterNumber, actual, actual)
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eolSequence.WhenSomething(func(sequence string){
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s = fmt.Sprintf(`eol: vertical-tab (VT) character ('\v') (U+000B) not found for end-of-line sequence %q character №%d — instead found %q (%U)`, sequence, characterNumber, actual, actual)
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})
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p = append(p, s...)
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case cr.Rune:
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var s string = fmt.Sprintf(`eol: carriage-return (CR) character ('\r') (U+000D) not found for end-of-line sequence character №%d — instead found %q (%U)`, characterNumber, actual, actual)
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eolSequence.WhenSomething(func(sequence string){
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@ -11,6 +11,7 @@ import (
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"sourcecode.social/reiver/go-eol/lfcr"
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"sourcecode.social/reiver/go-eol/ls"
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"sourcecode.social/reiver/go-eol/nel"
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"sourcecode.social/reiver/go-eol/vt"
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)
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// ReadEOL tries to read an end-of-line sequence.
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@ -18,6 +19,7 @@ import (
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// The end-of-line sequences it supports are:
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//
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// line-feed (LF) (U+000A) ('\n')
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// vertical-tab (VT) (U+000B) ('\v')
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// line-feed, carriage-return ("\n\r")
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// carriage-return (CR) (U+000D) ('\r')
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// carriage-return, line-feed ("\r\n")
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@ -52,6 +54,8 @@ func ReadEOL(runescanner io.RuneScanner) (endofline string, size int, err error)
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switch r0 {
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case lf.Rune:
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// Nothing here.
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case vt.Rune:
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return vt.String, size0, nil
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case cr.Rune:
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// Nothing here.
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case nel.Rune:
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@ -15,6 +15,7 @@ import (
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"sourcecode.social/reiver/go-eol/lfcr"
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"sourcecode.social/reiver/go-eol/ls"
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"sourcecode.social/reiver/go-eol/nel"
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"sourcecode.social/reiver/go-eol/vt"
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)
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func TestReadEOL(t *testing.T) {
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@ -29,6 +30,11 @@ func TestReadEOL(t *testing.T) {
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ExpectedEOL: lf.String,
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ExpectedSize: 1,
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},
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{
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Value: "\v",
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ExpectedEOL: vt.String,
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ExpectedSize: 1,
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},
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{
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Value: "\n\r",
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ExpectedEOL: lfcr.String,
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@ -62,6 +68,11 @@ func TestReadEOL(t *testing.T) {
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ExpectedEOL: lf.String,
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ExpectedSize: 1,
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},
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{
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Value: "\vapple banana cherry",
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ExpectedEOL: vt.String,
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ExpectedSize: 1,
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},
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{
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Value: "\n\rapple banana cherr",
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ExpectedEOL: lfcr.String,
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@ -0,0 +1,24 @@
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package eol
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import (
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"io"
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"sourcecode.social/reiver/go-opt"
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"sourcecode.social/reiver/go-eol/vt"
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)
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// ReadVT tries to read the "\r" (i.e., carriage-return) end-of-line sequence.
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//
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// If successful, it returns the number-of-bytes read (to read in end-of-line sequence "\r").
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//
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// If the character read is not a '\r', then ReadVT will try to unread the character.
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//
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// Example usage:
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//
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// size, err := eol.ReadVT(runescanner)
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func ReadVT(runescanner io.RuneScanner) (size int, err error) {
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const characterNumber uint64 = 1
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var circumstance internalCircumstance = specifyCircumstance(opt.Something(vt.String), characterNumber)
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return readthisrune(circumstance, runescanner, vt.Rune)
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}
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@ -0,0 +1,209 @@
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package eol_test
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import (
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"testing"
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"io"
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"strings"
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"sourcecode.social/reiver/go-utf8"
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"sourcecode.social/reiver/go-eol"
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)
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func TestReadVT(t *testing.T) {
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tests := []struct{
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Value string
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ExpectedSize int
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}{
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{
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Value: "\v",
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ExpectedSize: 1,
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},
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{
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Value: "\vapple banana cherry",
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ExpectedSize: 1,
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},
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}
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for testNumber, test := range tests {
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var reader io.Reader = strings.NewReader(test.Value)
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var runescanner io.RuneScanner = utf8.NewRuneScanner(reader)
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actualSize, err := eol.ReadVT(runescanner)
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if nil != err {
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t.Errorf("For test #%d, did not expect an error but actually got one.", testNumber)
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t.Logf("ERROR: (%T) %s", err, err)
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t.Logf("VALUE: %q", test.Value)
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continue
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}
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{
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expected := test.ExpectedSize
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actual := actualSize
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if expected != actual {
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t.Errorf("For test #%d, the actual size is not what was expected.", testNumber)
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t.Logf("EXPECTED: %d", expected)
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t.Logf("ACTUAL: %d", actual)
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t.Logf("VALUE: %q", test.Value)
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continue
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}
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}
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}
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}
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func TestReadVT_fail(t *testing.T) {
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tests := []struct{
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Value string
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ExpectedError string
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}{
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{
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Value: "",
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ExpectedError: `eol: problem reading character №1 of end-of-line sequence "\v": EOF`,
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},
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{
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Value: "\n",
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ExpectedError: `eol: vertical-tab (VT) character ('\v') (U+000B) not found for end-of-line sequence "\v" character №1 — instead found '\n' (U+000A)`,
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},
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{
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Value: "\u0085",
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ExpectedError: `eol: vertical-tab (VT) character ('\v') (U+000B) not found for end-of-line sequence "\v" character №1 — instead found '\u0085' (U+0085)`,
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},
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{
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Value: "\u2028",
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ExpectedError: `eol: vertical-tab (VT) character ('\v') (U+000B) not found for end-of-line sequence "\v" character №1 — instead found '\u2028' (U+2028)`,
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},
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{
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Value: "😈",
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ExpectedError: `eol: vertical-tab (VT) character ('\v') (U+000B) not found for end-of-line sequence "\v" character №1 — instead found '😈' (U+1F608)`,
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},
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{
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Value: "\napple banana cherry",
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ExpectedError: `eol: vertical-tab (VT) character ('\v') (U+000B) not found for end-of-line sequence "\v" character №1 — instead found '\n' (U+000A)`,
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},
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{
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Value: "\u0085apple banana cherry",
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ExpectedError: `eol: vertical-tab (VT) character ('\v') (U+000B) not found for end-of-line sequence "\v" character №1 — instead found '\u0085' (U+0085)`,
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},
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{
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Value: "\u2028apple banana cherry",
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ExpectedError: `eol: vertical-tab (VT) character ('\v') (U+000B) not found for end-of-line sequence "\v" character №1 — instead found '\u2028' (U+2028)`,
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},
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{
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Value: "😈apple banana cherry",
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ExpectedError: `eol: vertical-tab (VT) character ('\v') (U+000B) not found for end-of-line sequence "\v" character №1 — instead found '😈' (U+1F608)`,
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},
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{
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Value: " \n",
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ExpectedError: `eol: vertical-tab (VT) character ('\v') (U+000B) not found for end-of-line sequence "\v" character №1 — instead found ' ' (U+0020)`,
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},
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{
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Value: " \r",
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ExpectedError: `eol: vertical-tab (VT) character ('\v') (U+000B) not found for end-of-line sequence "\v" character №1 — instead found ' ' (U+0020)`,
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},
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{
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Value: " \u0085",
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ExpectedError: `eol: vertical-tab (VT) character ('\v') (U+000B) not found for end-of-line sequence "\v" character №1 — instead found ' ' (U+0020)`,
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},
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{
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Value: " \u2028",
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ExpectedError: `eol: vertical-tab (VT) character ('\v') (U+000B) not found for end-of-line sequence "\v" character №1 — instead found ' ' (U+0020)`,
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},
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{
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Value: " 😈",
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ExpectedError: `eol: vertical-tab (VT) character ('\v') (U+000B) not found for end-of-line sequence "\v" character №1 — instead found ' ' (U+0020)`,
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},
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{
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Value: ".\n",
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ExpectedError: `eol: vertical-tab (VT) character ('\v') (U+000B) not found for end-of-line sequence "\v" character №1 — instead found '.' (U+002E)`,
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},
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{
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Value: ".\r",
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ExpectedError: `eol: vertical-tab (VT) character ('\v') (U+000B) not found for end-of-line sequence "\v" character №1 — instead found '.' (U+002E)`,
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},
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{
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Value: ".\u0085",
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ExpectedError: `eol: vertical-tab (VT) character ('\v') (U+000B) not found for end-of-line sequence "\v" character №1 — instead found '.' (U+002E)`,
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},
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{
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Value: ".\u2028",
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ExpectedError: `eol: vertical-tab (VT) character ('\v') (U+000B) not found for end-of-line sequence "\v" character №1 — instead found '.' (U+002E)`,
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},
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{
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Value: ".😈",
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ExpectedError: `eol: vertical-tab (VT) character ('\v') (U+000B) not found for end-of-line sequence "\v" character №1 — instead found '.' (U+002E)`,
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},
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}
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for testNumber, test := range tests {
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var reader io.Reader = strings.NewReader(test.Value)
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var runescanner io.RuneScanner = utf8.NewRuneScanner(reader)
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actualSize, err := eol.ReadVT(runescanner)
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if nil == err {
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t.Errorf("For test #%d, expected an error but did not actually get one.", testNumber)
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t.Logf("EXPECTED-ERROR: %q", test.ExpectedError)
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t.Logf("VALUE: %q", test.Value)
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continue
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}
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{
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expected := test.ExpectedError
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actual := err.Error()
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if expected != actual {
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t.Errorf("For test #%d, the actual error is not what was expected.", testNumber)
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t.Logf("EXPECTED: %q", expected)
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t.Logf("ACTUAL: %q", actual)
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t.Logf("VALUE: %q", test.Value)
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continue
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}
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}
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{
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expected := 0
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actual := actualSize
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if expected != actual {
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t.Errorf("For test #%d, the actual size is not what was expected.", testNumber)
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t.Logf("EXPECTED: %d", expected)
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t.Logf("ACTUAL: %d", actual)
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t.Logf("VALUE: %q", test.Value)
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continue
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}
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}
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}
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}
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@ -0,0 +1,3 @@
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package vt
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const Byte byte = '\u000B'
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@ -0,0 +1,3 @@
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package vt
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const Rune rune = '\u000B'
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@ -0,0 +1,3 @@
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package vt
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const String string = string(Rune)
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