forked from TrueCloudLab/restic
100 lines
3.3 KiB
Go
100 lines
3.3 KiB
Go
package main
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import (
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"strings"
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"github.com/restic/restic/internal/errors"
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"github.com/restic/restic/internal/filter"
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"github.com/spf13/pflag"
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)
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// IncludeByNameFunc is a function that takes a filename that should be included
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// in the restore process and returns whether it should be included.
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type IncludeByNameFunc func(item string) (matched bool, childMayMatch bool)
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type includePatternOptions struct {
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Includes []string
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InsensitiveIncludes []string
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IncludeFiles []string
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InsensitiveIncludeFiles []string
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}
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func initIncludePatternOptions(f *pflag.FlagSet, opts *includePatternOptions) {
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f.StringArrayVarP(&opts.Includes, "include", "i", nil, "include a `pattern` (can be specified multiple times)")
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f.StringArrayVar(&opts.InsensitiveIncludes, "iinclude", nil, "same as --include `pattern` but ignores the casing of filenames")
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f.StringArrayVar(&opts.IncludeFiles, "include-file", nil, "read include patterns from a `file` (can be specified multiple times)")
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f.StringArrayVar(&opts.InsensitiveIncludeFiles, "iinclude-file", nil, "same as --include-file but ignores casing of `file`names in patterns")
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}
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func (opts includePatternOptions) CollectPatterns() ([]IncludeByNameFunc, error) {
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var fs []IncludeByNameFunc
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if len(opts.IncludeFiles) > 0 {
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includePatterns, err := readPatternsFromFiles(opts.IncludeFiles)
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if err != nil {
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return nil, err
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}
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if err := filter.ValidatePatterns(includePatterns); err != nil {
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return nil, errors.Fatalf("--include-file: %s", err)
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}
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opts.Includes = append(opts.Includes, includePatterns...)
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}
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if len(opts.InsensitiveIncludeFiles) > 0 {
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includePatterns, err := readPatternsFromFiles(opts.InsensitiveIncludeFiles)
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if err != nil {
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return nil, err
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}
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if err := filter.ValidatePatterns(includePatterns); err != nil {
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return nil, errors.Fatalf("--iinclude-file: %s", err)
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}
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opts.InsensitiveIncludes = append(opts.InsensitiveIncludes, includePatterns...)
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}
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if len(opts.InsensitiveIncludes) > 0 {
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if err := filter.ValidatePatterns(opts.InsensitiveIncludes); err != nil {
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return nil, errors.Fatalf("--iinclude: %s", err)
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}
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fs = append(fs, includeByInsensitivePattern(opts.InsensitiveIncludes))
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}
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if len(opts.Includes) > 0 {
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if err := filter.ValidatePatterns(opts.Includes); err != nil {
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return nil, errors.Fatalf("--include: %s", err)
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}
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fs = append(fs, includeByPattern(opts.Includes))
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}
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return fs, nil
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}
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// includeByPattern returns a IncludeByNameFunc which includes files that match
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// one of the patterns.
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func includeByPattern(patterns []string) IncludeByNameFunc {
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parsedPatterns := filter.ParsePatterns(patterns)
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return func(item string) (matched bool, childMayMatch bool) {
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matched, childMayMatch, err := filter.ListWithChild(parsedPatterns, item)
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if err != nil {
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Warnf("error for include pattern: %v", err)
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}
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return matched, childMayMatch
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}
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}
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// includeByInsensitivePattern returns a IncludeByNameFunc which includes files that match
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// one of the patterns, ignoring the casing of the filenames.
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func includeByInsensitivePattern(patterns []string) IncludeByNameFunc {
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for index, path := range patterns {
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patterns[index] = strings.ToLower(path)
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}
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includeFunc := includeByPattern(patterns)
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return func(item string) (matched bool, childMayMatch bool) {
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return includeFunc(strings.ToLower(item))
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}
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}
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