Current File : //proc/self/root/home/waritko/go/src/github.com/odeke-em/drive/src/id.go
// Copyright 2016 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package drive
import (
"fmt"
)
const (
fileIdWidth = -48
)
func idPrintAndRecurse(g *Commands, parentId, relToRootPath string, depth int) (err error) {
if depth == 0 {
return
}
// Paths vary greatly in length but fileIds don't vary that much
g.log.Logf("%*s %s\n", int(fileIdWidth), customQuote(parentId), customQuote(relToRootPath))
decrementedDepth := decrementTraversalDepth(depth)
if decrementedDepth == 0 { // No need to recurse if depth is already 0
return
}
pagePair := g.rem.FindByParentId(parentId, g.opts.Hidden)
separatorPrefix := relToRootPath
if rootLike(separatorPrefix) {
// Avoid a situation where you have Join("/", "/", "a") -> "//a"
separatorPrefix = ""
}
errsChan := pagePair.errsChan
children := pagePair.filesChan
working := true
for working {
select {
case pageErr := <-errsChan:
if pageErr != nil {
return pageErr
}
case child, stillHasContent := <-children:
if !stillHasContent {
working = false
break
}
if child == nil {
continue
}
childRelToRootPath := sepJoin(RemoteSeparator, separatorPrefix, child.Name)
cErr := idPrintAndRecurse(g, child.Id, childRelToRootPath, decrementedDepth)
if cErr != nil {
err = combineErrors(err, cErr)
}
}
}
return err
}
var idTableHeader = fmt.Sprintf("%*s %s", int(fileIdWidth), "FileId", "Relative Path")
func (g *Commands) Id() (err error) {
headerPrinted := false
iterCount := uint64(0)
for _, relToRootPath := range g.opts.Sources {
ithIterCount, ithHeaderPrinted, ithErr := g.idPrintRecursePerPath(relToRootPath, headerPrinted)
if ithErr != nil {
err = reComposeError(err, ithErr.Error())
}
headerPrinted = ithHeaderPrinted
iterCount += ithIterCount
}
return err
}
func (g *Commands) idPrintRecursePerPath(relToRootPath string, headerPrinted bool) (uint64, bool, error) {
pagePair := g.rem.FindByPathM(relToRootPath)
iterCount := uint64(0)
remotes := pagePair.filesChan
errsChan := pagePair.errsChan
var err error
working := true
for working {
select {
case pageErr := <-errsChan:
if pageErr != nil {
return iterCount, headerPrinted, pageErr
}
case rem, stillHasContent := <-remotes:
if !stillHasContent {
working = false
break
}
if rem == nil {
err = reComposeError(err, fmt.Sprintf("%s does not exist remotely", customQuote(relToRootPath)))
continue
}
if !headerPrinted {
g.log.Logln(idTableHeader)
headerPrinted = true
}
iterCount++
cErr := idPrintAndRecurse(g, rem.Id, relToRootPath, g.opts.Depth)
if cErr != nil {
err = combineErrors(err, cErr)
}
}
}
if iterCount < 1 {
err = reComposeError(err, fmt.Sprintf("%s not matched", customQuote(relToRootPath)))
}
return iterCount, headerPrinted, err
}
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