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39 lines
1.7 KiB
Go
39 lines
1.7 KiB
Go
/*
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* govis: unicode aware vis(3) encoding implementation
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* Copyright (C) 2017 SUSE LLC.
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*
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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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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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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 govis
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// VisFlag manipulates how the characters are encoded/decoded
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type VisFlag uint
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// vis() has a variety of flags when deciding what encodings to use. While
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// mtree only uses one set of flags, implementing them all is necessary in
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// order to have compatibility with BSD's vis() and unvis() commands.
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const (
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VisOctal VisFlag = (1 << iota) // VIS_OCTAL: Use octal \ddd format.
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VisCStyle // VIS_CSTYLE: Use \[nrft0..] where appropriate.
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VisSpace // VIS_SP: Also encode space.
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VisTab // VIS_TAB: Also encode tab.
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VisNewline // VIS_NL: Also encode newline.
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VisSafe // VIS_SAFE: Encode unsafe characters.
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VisNoSlash // VIS_NOSLASH: Inhibit printing '\'.
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VisHTTPStyle // VIS_HTTPSTYLE: HTTP-style escape %xx.
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VisGlob // VIS_GLOB: Encode glob(3) magics.
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visMask VisFlag = (1 << iota) - 1 // Mask of all flags.
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VisWhite VisFlag = (VisSpace | VisTab | VisNewline)
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)
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