reiver
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go-eol
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Charles Iliya Krempeaux 2023-11-28 08:09:58 -08:00
parent b379ea9fdb
commit 55b7fa9ffa
1 changed files with 22 additions and 8 deletions
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30
readeol.go
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@ -2,6 +2,8 @@ package eol
import ( import (
"io" "io"
"sourcecode.social/reiver/go-opt"
) )
// ReadEOL tries to read and end-of-line character. // ReadEOL tries to read and end-of-line character.
@ -27,8 +29,11 @@ func ReadEOL(runescanner io.RuneScanner) (endofline string, size int, err error)
r0, size0, err = runescanner.ReadRune() r0, size0, err = runescanner.ReadRune()
if nil != err { if nil != err {
const runeNumber = 1 const characterNumber uint64 = 1
return "", size0, errProblemReadingRune(err, runeNumber) var eolSequence opt.Optional[string] // = opt.Nothing[string]() // i.e., unknown
var circumstance internalCircumstance = specifyCircumstance(eolSequence, characterNumber)
return "", size0, errProblemReadingRune(circumstance, err)
} }
} }
@ -44,8 +49,11 @@ func ReadEOL(runescanner io.RuneScanner) (endofline string, size int, err error)
default: default:
err := runescanner.UnreadRune() err := runescanner.UnreadRune()
if nil != err { if nil != err {
const runeNumber = 1 const characterNumber uint64 = 1
return "", size0, errProblemUnreadingRune(err, runeNumber, r0) var eolSequence opt.Optional[string] // = opt.Nothing[string]() // i.e., unknown
var circumstance internalCircumstance = specifyCircumstance(eolSequence, characterNumber)
return "", size0, errProblemUnreadingRune(circumstance, err, r0)
} }
return "", 0, errNotEOL(r0) return "", 0, errNotEOL(r0)
@ -63,8 +71,11 @@ func ReadEOL(runescanner io.RuneScanner) (endofline string, size int, err error)
return CR, size0, nil return CR, size0, nil
} }
if nil != err { if nil != err {
const runeNumber = 2 const characterNumber uint64 = 2
return "", size1+size0, errProblemReadingRune(err, runeNumber) var eolSequence opt.Optional[string] // = opt.Nothing[string]() // i.e., unknown
var circumstance internalCircumstance = specifyCircumstance(eolSequence, characterNumber)
return "", size1+size0, errProblemReadingRune(circumstance, err)
} }
} }
@ -74,8 +85,11 @@ func ReadEOL(runescanner io.RuneScanner) (endofline string, size int, err error)
default: default:
err := runescanner.UnreadRune() err := runescanner.UnreadRune()
if nil != err { if nil != err {
const runeNumber = 2 const characterNumber uint64 = 2
return "", size1+size0, errProblemUnreadingRune(err, runeNumber, r1) var eolSequence opt.Optional[string] // = opt.Nothing[string]() // i.e., unknown
var circumstance internalCircumstance = specifyCircumstance(eolSequence, characterNumber)
return "", size1+size0, errProblemUnreadingRune(circumstance, err, r1)
} }
return CR, size0, nil return CR, size0, nil