f4b5bcb865
* simplify GetItemByPath * hub: sort version numbers by semver * replace golang.org/x/mod/semver with github.com/Masterminds/semver/v3 (would not compare correctly) * fix nil dereference with tainted items * update tests for collections, postoverflows * fix nil deref * don't fallback to master if hub is not found, improve message * explicit message for unknown version / tainted collections
54 lines
1.3 KiB
Go
54 lines
1.3 KiB
Go
package cwhub
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// Resolve a symlink to find the hub item it points to.
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// This file is used only by pkg/leakybucket
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import (
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"fmt"
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"os"
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"path/filepath"
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"strings"
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)
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// itemKey extracts the map key of an item (i.e. author/name) from its pathname. Follows a symlink if necessary
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func itemKey(itemPath string) (string, error) {
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f, err := os.Lstat(itemPath)
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if err != nil {
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return "", fmt.Errorf("while performing lstat on %s: %w", itemPath, err)
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}
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if f.Mode()&os.ModeSymlink == 0 {
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// it's not a symlink, so the filename itsef should be the key
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return filepath.Base(itemPath), nil
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}
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// resolve the symlink to hub file
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pathInHub, err := os.Readlink(itemPath)
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if err != nil {
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return "", fmt.Errorf("while reading symlink of %s: %w", itemPath, err)
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}
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author := filepath.Base(filepath.Dir(pathInHub))
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fname := filepath.Base(pathInHub)
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fname = strings.TrimSuffix(fname, ".yaml")
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fname = strings.TrimSuffix(fname, ".yml")
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return fmt.Sprintf("%s/%s", author, fname), nil
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}
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// GetItemByPath retrieves the item from the hub index based on its path.
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func (h *Hub) GetItemByPath(itemType string, itemPath string) (*Item, error) {
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itemKey, err := itemKey(itemPath)
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if err != nil {
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return nil, err
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}
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item := h.GetItem(itemType, itemKey)
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if item == nil {
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return nil, fmt.Errorf("%s not found in %s", itemKey, itemType)
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}
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return item, nil
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}
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