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988f2e3290
Create a spreadsheet/reference package and put these functions there. This prevents both duplication across the formula & spreadsheet packages and a cyclic reference.
51 lines
1.3 KiB
Go
51 lines
1.3 KiB
Go
// Copyright 2017 Baliance. All rights reserved.
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//
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// Use of this source code is governed by the terms of the Affero GNU General
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// Public License version 3.0 as published by the Free Software Foundation and
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// appearing in the file LICENSE included in the packaging of this file. A
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// commercial license can be purchased by contacting sales@baliance.com.
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package spreadsheet
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import (
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"fmt"
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"strconv"
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"strings"
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)
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// ParseRangeReference splits a range reference of the form "A1:B5" into its
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// components.
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func ParseRangeReference(s string) (from, to string, err error) {
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sp := strings.Split(s, ":")
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if len(sp) == 2 {
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return sp[0], sp[1], nil
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}
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return "", "", fmt.Errorf("invaid range reference: %s", s)
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}
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// ParseCellReference parses a cell reference of the form 'A10' and splits it
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// into column/row segments.
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func ParseCellReference(s string) (col string, row uint32, err error) {
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s = strings.Replace(s, "$", "", -1)
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split := -1
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lfor:
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for i := 0; i < len(s); i++ {
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switch {
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case s[i] >= '0' && s[i] <= '9':
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split = i
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break lfor
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}
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}
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switch split {
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case 0:
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return col, row, fmt.Errorf("no letter prefix in %s", s)
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case -1:
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return col, row, fmt.Errorf("no digits in %s", s)
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}
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col = s[0:split]
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r64, err := strconv.ParseUint(s[split:], 10, 32)
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row = uint32(r64)
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return col, row, err
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}
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