Mercurial > gemma
annotate pkg/common/zip.go @ 5520:05db984d3db1
Improve performance of bottleneck area calculation
Avoid buffer calculations by replacing them with simple distance comparisons
and calculate the boundary of the result geometry only once per iteration.
In some edge cases with very large numbers of iterations, this reduced
the runtime of a bottleneck import by a factor of more than twenty.
author | Tom Gottfried <tom@intevation.de> |
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date | Thu, 21 Oct 2021 19:50:39 +0200 |
parents | 4bb5dfa0b7e3 |
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1225
4d7c44f7044e
Factored out som zip lookup code to be reusable in sounding result upload controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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1 // This is Free Software under GNU Affero General Public License v >= 3.0 |
4d7c44f7044e
Factored out som zip lookup code to be reusable in sounding result upload controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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2 // without warranty, see README.md and license for details. |
4d7c44f7044e
Factored out som zip lookup code to be reusable in sounding result upload controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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3 // |
4d7c44f7044e
Factored out som zip lookup code to be reusable in sounding result upload controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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4 // SPDX-License-Identifier: AGPL-3.0-or-later |
4d7c44f7044e
Factored out som zip lookup code to be reusable in sounding result upload controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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5 // License-Filename: LICENSES/AGPL-3.0.txt |
4d7c44f7044e
Factored out som zip lookup code to be reusable in sounding result upload controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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6 // |
4d7c44f7044e
Factored out som zip lookup code to be reusable in sounding result upload controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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7 // Copyright (C) 2018 by via donau |
4d7c44f7044e
Factored out som zip lookup code to be reusable in sounding result upload controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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8 // – Österreichische Wasserstraßen-Gesellschaft mbH |
4d7c44f7044e
Factored out som zip lookup code to be reusable in sounding result upload controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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9 // Software engineering by Intevation GmbH |
4d7c44f7044e
Factored out som zip lookup code to be reusable in sounding result upload controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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10 // |
4d7c44f7044e
Factored out som zip lookup code to be reusable in sounding result upload controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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11 // Author(s): |
4d7c44f7044e
Factored out som zip lookup code to be reusable in sounding result upload controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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12 // * Sascha L. Teichmann <sascha.teichmann@intevation.de> |
4d7c44f7044e
Factored out som zip lookup code to be reusable in sounding result upload controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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changeset
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13 |
4d7c44f7044e
Factored out som zip lookup code to be reusable in sounding result upload controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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14 package common |
4d7c44f7044e
Factored out som zip lookup code to be reusable in sounding result upload controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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15 |
4d7c44f7044e
Factored out som zip lookup code to be reusable in sounding result upload controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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16 import ( |
4d7c44f7044e
Factored out som zip lookup code to be reusable in sounding result upload controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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17 "archive/zip" |
4d7c44f7044e
Factored out som zip lookup code to be reusable in sounding result upload controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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18 "strings" |
4d7c44f7044e
Factored out som zip lookup code to be reusable in sounding result upload controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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changeset
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19 ) |
4d7c44f7044e
Factored out som zip lookup code to be reusable in sounding result upload controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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changeset
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20 |
1345
6a021108410b
Finished the doc strings for the common package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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21 // FindInZIP scans a ZIP file directory for a file that ends with |
1347
594f3f1e45aa
Typo fix.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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22 // case insensitive string. Returns only the first match. |
1225
4d7c44f7044e
Factored out som zip lookup code to be reusable in sounding result upload controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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23 func FindInZIP(z *zip.ReadCloser, needle string) *zip.File { |
3748
4bb5dfa0b7e3
SR import: Accept TXT file for uploads.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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24 if z == nil { |
4bb5dfa0b7e3
SR import: Accept TXT file for uploads.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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25 return nil |
4bb5dfa0b7e3
SR import: Accept TXT file for uploads.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1347
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changeset
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26 } |
1225
4d7c44f7044e
Factored out som zip lookup code to be reusable in sounding result upload controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
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27 needle = strings.ToLower(needle) |
4d7c44f7044e
Factored out som zip lookup code to be reusable in sounding result upload controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
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28 for _, straw := range z.File { |
4d7c44f7044e
Factored out som zip lookup code to be reusable in sounding result upload controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
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29 if strings.HasSuffix(strings.ToLower(straw.Name), needle) { |
4d7c44f7044e
Factored out som zip lookup code to be reusable in sounding result upload controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
30 return straw |
4d7c44f7044e
Factored out som zip lookup code to be reusable in sounding result upload controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
31 } |
4d7c44f7044e
Factored out som zip lookup code to be reusable in sounding result upload controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
32 } |
4d7c44f7044e
Factored out som zip lookup code to be reusable in sounding result upload controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
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33 return nil |
4d7c44f7044e
Factored out som zip lookup code to be reusable in sounding result upload controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
34 } |