forked from rook/rook
Travis Nielsen
c122562a7d
Remove all cgo from the code base, and start the transformation to calling external ceph tools to generate config and start daemons.
56 lines
1.5 KiB
Go
56 lines
1.5 KiB
Go
/*
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Copyright 2016 The Rook Authors. All rights reserved.
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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 sys
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import (
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"regexp"
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"strings"
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)
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// grep finds the *first* line that matches, rather than multiple lines
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func Grep(input, searchFor string) string {
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logger.Debugf("grep. search=%s, input=%s", searchFor, input)
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if input == "" || searchFor == "" {
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return ""
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}
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for _, line := range strings.Split(input, "\n") {
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if matched, _ := regexp.MatchString(searchFor, line); matched {
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logger.Debugf("grep found line: %s", line)
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return line
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}
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}
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return ""
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}
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// awk finds the space-delimited token at the given position.
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// 0 returns the whole line, while 1 is the first token.
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func Awk(input string, position int) string {
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logger.Debugf("awk %d from %s", position, input)
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if position == 0 {
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return input
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}
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words := strings.Split(strings.TrimSpace(input), " ")
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position--
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if position < 0 || position >= len(words) {
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// out of range
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return ""
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}
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result := strings.TrimSpace(words[position])
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logger.Debugf("found awk string %s", result)
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return result
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}
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