67 lines
1.7 KiB
Go
67 lines
1.7 KiB
Go
package tag
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import (
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"errors"
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"fmt"
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"log"
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"os"
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"github.com/brtholomy/um/go/cmd"
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"github.com/brtholomy/um/go/flags"
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"github.com/brtholomy/um/go/last"
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)
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const (
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CMD = cmd.Tag
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SUMMARY = "query for a filelist with a set of tags"
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)
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type options struct {
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Query flags.Arg
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Date flags.String
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Invert flags.Bool
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Verbose flags.Bool
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Help flags.Bool
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}
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func initOpts() options {
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return options{
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flags.Arg{"", "tag query: understands intersection '+' and union ','"},
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flags.String{"--date", "-d", "", "date range in ISO 8601: YYYY.MM.DD[-YYYY.MM.DD]"},
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flags.Bool{"--invert", "-i", false, "invert match"},
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flags.Bool{"--verbose", "-v", false, "print a verbose summary"},
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flags.Bool{"--help", "-h", false, "show help"},
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}
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}
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func Tag(args []string) {
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opts := initOpts()
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help := flags.NewHelpError(CMD, SUMMARY)
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if err := flags.ParseArgs(help, args, &opts); err != nil {
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var herr flags.HelpError
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if errors.As(err, &herr) {
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fmt.Println(herr)
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return
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}
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log.Fatalf("um %s: %s", CMD, err)
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}
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queries := parseQuery(opts.Query.Val)
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entries := entriesGlobOrStdin(last.GLOB)
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// we shrink the entries list immediately if we want a date range:
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if opts.Date.IsSet() {
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entries = dateRange(entries, opts.Date.Val)
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}
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tagmap := makeTagmap(entries)
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// processQueries must precede invert because we want invert to respect combined tags:
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files := processQueries(tagmap, queries)
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if opts.Invert.IsSet() {
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files = invert(entries, files)
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}
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// NOTE: the full makeAdjacencies map may one day be useful on its own
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adjacencies := reduceAdjacencies(makeAdjacencies(entries, files), queries, opts.Invert.Val)
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printFiles(os.Stdout, entries, tagmap, files, adjacencies, queries, opts.Verbose.Val)
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}
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