35 lines
1.2 KiB
Go
35 lines
1.2 KiB
Go
/*
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Copyright 2025 The Kubernetes 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 content
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import (
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"regexp"
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)
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const cIdentifierFmt string = "[A-Za-z_][A-Za-z0-9_]*"
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const identifierErrMsg string = "a valid C identifier must start with alphabetic character or '_', followed by a string of alphanumeric characters or '_'"
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var cIdentifierRegexp = regexp.MustCompile("^" + cIdentifierFmt + "$")
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// IsCIdentifier tests for a string that conforms the definition of an identifier
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// in C. This checks the format, but not the length.
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func IsCIdentifier(value string) []string {
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if !cIdentifierRegexp.MatchString(value) {
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return []string{RegexError(identifierErrMsg, cIdentifierFmt, "my_name", "MY_NAME", "MyName")}
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}
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return nil
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}
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