mirror of
https://github.com/wneessen/apg-go.git
synced 2024-09-12 00:12:47 +02:00
Winni Neessen
79f921f9ad
This commit introduces the .gitignore configuration file and adds SPDX headers to several files including test and documentation files. The headers provide license information in a standardized format which can be easily picked up by automated tools for license compliance checks. Additionally, it deleted a .idea/.gitignore file, which is a project specific IDE configuration file not necessary for the repository. It also introduced a README.md file providing more insightful information about the project.
113 lines
3.6 KiB
Go
113 lines
3.6 KiB
Go
// SPDX-FileCopyrightText: 2021-2024 Winni Neessen <wn@neessen.dev>
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//
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// SPDX-License-Identifier: MIT
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package apg
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import (
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"strings"
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)
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// Mode represents a mode of characters
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type Mode uint8
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// ModeMask represents a bitmask of character modes
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type ModeMask uint8
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const (
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// ModeNumeric sets the bitmask to include numeric in the generated passwords
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ModeNumeric = 1 << iota
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// ModeLowerCase sets the bitmask to include lower case characters in the
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// generated passwords
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ModeLowerCase
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// ModeUpperCase sets the bitmask to include upper case characters in the
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// generated passwords
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ModeUpperCase
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// ModeSpecial sets the bitmask to include special characters in the
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// generated passwords
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ModeSpecial
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// ModeHumanReadable sets the bitmask to generate human readable passwords
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ModeHumanReadable
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)
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const (
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// CharRangeAlphaLower represents all lower-case alphabetical characters
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CharRangeAlphaLower = "abcdefghijklmnopqrstuvwxyz"
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// CharRangeAlphaLowerHuman represents the human-readable lower-case alphabetical characters
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CharRangeAlphaLowerHuman = "abcdefghjkmnpqrstuvwxyz"
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// CharRangeAlphaUpper represents all upper-case alphabetical characters
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CharRangeAlphaUpper = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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// CharRangeAlphaUpperHuman represents the human-readable upper-case alphabetical characters
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CharRangeAlphaUpperHuman = "ABCDEFGHJKMNPQRSTUVWXYZ"
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// CharRangeNumeric represents all numerical characters
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CharRangeNumeric = "1234567890"
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// CharRangeNumericHuman represents all human-readable numerical characters
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CharRangeNumericHuman = "23456789"
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// CharRangeSpecial represents all special characters
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CharRangeSpecial = `!\"#$%&'()*+,-./:;<=>?@[\\]^_{|}~`
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// CharRangeSpecialHuman represents all human-readable special characters
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CharRangeSpecialHuman = `#%*+-:;=`
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)
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// MaskSetMode sets a specific Mode to a given Mode bitmask
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func MaskSetMode(mask ModeMask, mode Mode) ModeMask { return ModeMask(uint8(mask) | uint8(mode)) }
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// MaskClearMode clears a specific Mode from a given Mode bitmask
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func MaskClearMode(mask ModeMask, mode Mode) ModeMask { return ModeMask(uint8(mask) &^ uint8(mode)) }
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// MaskToggleMode toggles a specific Mode in a given Mode bitmask
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func MaskToggleMode(mask ModeMask, mode Mode) ModeMask { return ModeMask(uint8(mask) ^ uint8(mode)) }
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// MaskHasMode returns true if a given Mode bitmask holds a specific Mode
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func MaskHasMode(mask ModeMask, mode Mode) bool { return uint8(mask)&uint8(mode) != 0 }
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func ModesFromFlags(maskString string) ModeMask {
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cl := strings.Split(maskString, "")
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var modeMask ModeMask
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for _, m := range cl {
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switch m {
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case "C":
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modeMask = MaskSetMode(modeMask, ModeLowerCase|ModeNumeric|ModeSpecial|ModeUpperCase)
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case "h":
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modeMask = MaskClearMode(modeMask, ModeHumanReadable)
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case "H":
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modeMask = MaskSetMode(modeMask, ModeHumanReadable)
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case "l":
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modeMask = MaskClearMode(modeMask, ModeLowerCase)
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case "L":
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modeMask = MaskSetMode(modeMask, ModeLowerCase)
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case "n":
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modeMask = MaskClearMode(modeMask, ModeNumeric)
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case "N":
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modeMask = MaskSetMode(modeMask, ModeNumeric)
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case "s":
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modeMask = MaskClearMode(modeMask, ModeSpecial)
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case "S":
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modeMask = MaskSetMode(modeMask, ModeSpecial)
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case "u":
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modeMask = MaskClearMode(modeMask, ModeUpperCase)
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case "U":
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modeMask = MaskSetMode(modeMask, ModeUpperCase)
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}
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}
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return modeMask
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}
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// String satisfies the fmt.Stringer interface for the Mode type
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func (m Mode) String() string {
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switch m {
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case ModeHumanReadable:
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return "Human-readable"
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case ModeLowerCase:
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return "Lower-case"
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case ModeNumeric:
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return "Numeric"
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case ModeSpecial:
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return "Special"
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case ModeUpperCase:
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return "Upper-case"
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default:
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return "Unknown"
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}
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}
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