mirror of https://github.com/perkeep/perkeep.git
126 lines
3.2 KiB
Go
126 lines
3.2 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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"io/ioutil"
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"os"
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"strings"
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"camlistore.org/pkg/cmdmain"
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"camlistore.org/pkg/search"
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"go4.org/strutil"
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)
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type searchCmd struct {
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server string
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limit int
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cont string
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describe bool
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rawQuery bool
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}
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func init() {
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cmdmain.RegisterCommand("search", func(flags *flag.FlagSet) cmdmain.CommandRunner {
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cmd := new(searchCmd)
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flags.StringVar(&cmd.server, "server", "", "Server to search. "+serverFlagHelp)
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flags.IntVar(&cmd.limit, "limit", 0, "Limit number of results. 0 is default. Negative means no limit.")
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flags.StringVar(&cmd.cont, "continue", "", "Continue token from a previously limited search. The query must be identical to the original search.")
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flags.BoolVar(&cmd.describe, "describe", false, "Describe results as well.")
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flags.BoolVar(&cmd.rawQuery, "rawquery", false, "If true, the provided JSON is a SearchQuery, and not a Constraint. In this case, the -limit and -continue flags, if non-zero, are applied after parsing the JSON.")
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return cmd
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})
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}
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func (c *searchCmd) Describe() string {
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return "Execute a search query"
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}
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func (c *searchCmd) Usage() {
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fmt.Fprintf(os.Stderr, "Usage: camtool [globalopts] search <expr or Constraint JSON>\n")
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}
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func (c *searchCmd) Examples() []string {
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return []string{
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`"loc:paris is:portrait" # expression`,
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`'{"blobrefPrefix":"sha1-f00d"}' # SearchConstraint JSON`,
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`- # piped from stdin`,
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}
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}
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func (c *searchCmd) RunCommand(args []string) error {
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if len(args) != 1 {
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return cmdmain.UsageError("requires search expression or Constraint JSON")
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}
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q := args[0]
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if q == "-" {
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slurp, err := ioutil.ReadAll(cmdmain.Stdin)
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if err != nil {
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return err
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}
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q = string(slurp)
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}
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q = strings.TrimSpace(q)
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req := &search.SearchQuery{
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Limit: c.limit,
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Continue: c.cont,
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}
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if c.rawQuery {
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req.Limit = 0 // clear it if they provided it
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req.Continue = "" // clear this as well
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if err := json.NewDecoder(strings.NewReader(q)).Decode(&req); err != nil {
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return err
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}
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if c.limit != 0 {
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req.Limit = c.limit
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}
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if c.cont != "" {
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req.Continue = c.cont
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}
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} else if strutil.IsPlausibleJSON(q) {
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cs := new(search.Constraint)
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if err := json.NewDecoder(strings.NewReader(q)).Decode(&cs); err != nil {
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return err
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}
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req.Constraint = cs
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} else {
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req.Expression = q
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}
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if c.describe {
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req.Describe = &search.DescribeRequest{}
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}
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cl := newClient(c.server)
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res, err := cl.Query(req)
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if err != nil {
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return err
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}
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resj, err := json.MarshalIndent(res, "", " ")
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if err != nil {
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return err
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}
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resj = append(resj, '\n')
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_, err = os.Stdout.Write(resj)
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return err
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}
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