mirror of
https://github.com/unidoc/unipdf.git
synced 2025-05-02 22:17:06 +08:00
55 lines
1.3 KiB
Go
55 lines
1.3 KiB
Go
/*
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* This file is subject to the terms and conditions defined in
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* file 'LICENSE.md', which is part of this source code package.
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*/
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package extractor
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import (
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"bytes"
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"fmt"
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"github.com/unidoc/unidoc/common/license"
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"github.com/unidoc/unidoc/pdf/core"
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)
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func procBuf(buf *bytes.Buffer) {
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if isTesting {
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return
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}
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lk := license.GetLicenseKey()
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if lk != nil && lk.IsLicensed() {
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return
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}
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fmt.Printf("Unlicensed copy of unidoc\n")
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fmt.Printf("To get rid of the watermark and keep entire text - Please get a license on https://unidoc.io\n")
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s := "- [Unlicensed UniDoc - Get a license on https://unidoc.io]"
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if buf.Len() > 100 {
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s = "... [Truncated - Unlicensed UniDoc - Get a license on https://unidoc.io]"
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buf.Truncate(buf.Len() - 100)
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}
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buf.WriteString(s)
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}
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// toFloatList returns `objs` as 2 floats, if that's what it is, or an error if it isn't
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func toFloatXY(objs []core.PdfObject) (x, y float64, err error) {
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if len(objs) != 2 {
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return 0, 0, fmt.Errorf("invalid number of params: %d", len(objs))
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}
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floats, err := core.GetNumbersAsFloat(objs)
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if err != nil {
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return 0, 0, err
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}
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return floats[0], floats[1], nil
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}
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// truncate returns the first `n` characters in string `s`.
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func truncate(s string, n int) string {
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if len(s) < n {
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return s
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}
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return s[:n]
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}
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