func readRow(r *yacr.Reader, buffer row, pEof bool) (row, row, bool) {
if pEof {
return buffer, nil, pEof
}
var eof bool
var v, cv []byte
orig := buffer
i := 0
buffer = buffer[:0]
for {
if r.Scan() {
v = r.Bytes() // must be copied
if i < len(orig) {
cv = orig[i]
cv = append(cv[:0], v...)
} else {
cv = make([]byte, len(v))
copy(cv, v)
}
buffer = append(buffer, cv)
if r.EndOfRecord() {
break
}
} else {
eof = true
break
}
i++
}
if err := r.Err(); err != nil {
log.Fatalf("Error while reading file: '%s'\n", err)
}
if len(buffer) == 0 {
return buffer, nil, eof
}
return buffer, buffer, eof
}
func (v *csvTab) readRow(r *yacr.Reader) error {
v.cols = v.cols[:0]
for {
if !r.Scan() {
err := r.Err()
v.eof = err == nil
return err
}
if r.EndOfRecord() && len(r.Bytes()) == 0 { // skip empty line (or line comment)
continue
}
col := r.Text()
if len(col) >= v.maxLength {
return fmt.Errorf("CSV row is too long (>= %d)", v.maxLength)
}
v.cols = append(v.cols, col)
if len(v.cols) >= v.maxColumn {
return fmt.Errorf("too many columns (>= %d)", v.maxColumn)
}
if r.EndOfRecord() {
break
}
}
return nil
}