mirror of https://github.com/perkeep/perkeep.git
84 lines
1.9 KiB
Go
84 lines
1.9 KiB
Go
/*
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Copyright 2014 The Camlistore Authors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package main
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import (
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"encoding/json"
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"flag"
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"fmt"
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"os"
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"strings"
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"text/tabwriter"
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"camlistore.org/pkg/cmdmain"
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"camlistore.org/pkg/search"
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)
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type searchDocCmd struct{}
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func init() {
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cmdmain.RegisterCommand("searchdoc", func(flags *flag.FlagSet) cmdmain.CommandRunner {
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return new(searchDocCmd)
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})
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}
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func (c *searchDocCmd) Describe() string {
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return "Provide help on the predicates for search expressions"
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}
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func (c *searchDocCmd) Usage() {
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cmdmain.Errorf("camtool searchdoc")
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}
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func (c *searchDocCmd) RunCommand(args []string) error {
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if len(args) > 0 {
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return cmdmain.UsageError("No arguments allowed")
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}
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formattedSearchHelp()
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return nil
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}
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func formattedSearchHelp() {
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s := search.SearchHelp()
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type help struct{ Name, Description string }
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h := []help{}
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err := json.Unmarshal([]byte(s), &h)
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if err != nil {
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cmdmain.Errorf("%v", err)
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os.Exit(1)
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}
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w := new(tabwriter.Writer)
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w.Init(cmdmain.Stdout, 0, 8, 0, '\t', 0)
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fmt.Fprintln(w, "Predicates for search expressions")
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fmt.Fprintln(w)
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fmt.Fprintln(w, "Predicate\tDescription")
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fmt.Fprintln(w)
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for _, predicate := range h {
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desc := strings.Split(predicate.Description, "\n")
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for i, d := range desc {
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if i == 0 {
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fmt.Fprintf(w, "%s\t%s\n", predicate.Name, d)
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} else {
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fmt.Fprintf(w, "\t%s\n", d)
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}
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}
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}
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w.Flush()
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}
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