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progress.go
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progress.go
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/*
Copyright 2019 Artem Sidorenko <artem@posteo.de>
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 generate
import (
"context"
"fmt"
"io"
"strconv"
)
// printProgress prints the current processing progress on given output
// using the input on returned channels.
// Print goroutine exists then context ctx cancels or all channels are closed
func printProgress( // nolint: gocyclo
ctx context.Context,
out io.Writer,
ctagscounter <-chan bool,
cmaxtags <-chan int,
cissuescounter <-chan bool,
cmaxissues <-chan int,
cmrscounter <-chan bool,
cmaxmrs <-chan int,
) {
go func() {
var tagscounter int
var issuescounter int
var mrscounter int
maxtags := "X"
maxissues := "X"
maxmrs := "X"
// print newline character when leaving the progress printing routine
defer func() {
fmt.Fprintf(out, "\n") // nolint: errcheck
}()
for {
select {
case <-ctx.Done():
return
case v, ok := <-cmaxtags:
if ok {
maxtags = strconv.Itoa(v)
} else {
cmaxtags = nil
}
case v, ok := <-cmaxissues:
if ok {
maxissues = strconv.Itoa(v)
} else {
cmaxissues = nil
}
case v, ok := <-cmaxmrs:
if ok {
maxmrs = strconv.Itoa(v)
} else {
cmaxmrs = nil
}
case _, ok := <-ctagscounter:
if ok {
tagscounter++
} else {
ctagscounter = nil
}
case _, ok := <-cissuescounter:
if ok {
issuescounter++
} else {
cissuescounter = nil
}
case _, ok := <-cmrscounter:
if ok {
mrscounter++
} else {
cmrscounter = nil
}
}
if ctagscounter == nil && cmaxtags == nil &&
cissuescounter == nil && cmaxissues == nil &&
cmrscounter == nil && cmaxmrs == nil {
return
}
fmt.Fprintf(out, // nolint: errcheck
"\rProgress: %v/%v tags, %v/%v issues, %v/%v MRs/PRs",
tagscounter, maxtags,
issuescounter, maxissues,
mrscounter, maxmrs,
)
}
}()
}