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197 lines
10 KiB
Go
197 lines
10 KiB
Go
// Copyright © 2016 Zellyn Hunter <zellyn@gmail.com>
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// filetype.go contains the Filetype type, along with routines for
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// converting to and from strings.
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package types
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import "fmt"
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// Filetype describes the type of a file. It's byte-compatible with
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// the ProDOS/SOS filetype byte definitions in the range 00-FF.
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type Filetype int
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// Filetypes.
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const (
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FiletypeTypeless Filetype = 0x00 // | both | Typeless file
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FiletypeBadBlocks Filetype = 0x01 // | both | Bad blocks file
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FiletypeSOSPascalCode Filetype = 0x02 // | SOS | PASCAL code file
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FiletypeSOSPascalText Filetype = 0x03 // | SOS | PASCAL text file
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FiletypeASCIIText Filetype = 0x04 // TXT | both | ASCII text file
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FiletypeSOSPascalText2 Filetype = 0x05 // | SOS | PASCAL text file
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FiletypeBinary Filetype = 0x06 // BIN | both | Binary file
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FiletypeFont Filetype = 0x07 // | SOS | Font file
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FiletypeGraphicsScreen Filetype = 0x08 // | SOS | Graphics screen file
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FiletypeBusinessBASIC Filetype = 0x09 // | SOS | Business BASIC program file
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FiletypeBusinessBASICData Filetype = 0x0A // | SOS | Business BASIC data file
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FiletypeSOSWordProcessor Filetype = 0x0B // | SOS | Word processor file
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FiletypeSOSSystem Filetype = 0x0C // | SOS | SOS system file
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FiletypeDirectory Filetype = 0x0F // DIR | both | Directory file
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FiletypeRPSData Filetype = 0x10 // | SOS | RPS data file
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FiletypeRPSIndex Filetype = 0x11 // | SOS | RPS index file
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FiletypeAppleWorksDatabase Filetype = 0x19 // ADB | ProDOS | AppleWorks data base file
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FiletypeAppleWorksWordProcessor Filetype = 0x1A // AWP | ProDOS | AppleWorks word processing file
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FiletypeAppleWorksSpreadsheet Filetype = 0x1B // ASP | ProDOS | AppleWorks spreadsheet file
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FiletypePascal Filetype = 0xEF // PAS | ProDOS | ProDOS PASCAL file
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FiletypeCommand Filetype = 0xF0 // CMD | ProDOS | Added command file
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FiletypeUserDefinedF1 Filetype = 0xF1 // | ProDOS | ProDOS user defined file type F1
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FiletypeUserDefinedF2 Filetype = 0xF2 // | ProDOS | ProDOS user defined file type F2
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FiletypeUserDefinedF3 Filetype = 0xF3 // | ProDOS | ProDOS user defined file type F3
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FiletypeUserDefinedF4 Filetype = 0xF4 // | ProDOS | ProDOS user defined file type F4
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FiletypeUserDefinedF5 Filetype = 0xF5 // | ProDOS | ProDOS user defined file type F5
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FiletypeUserDefinedF6 Filetype = 0xF6 // | ProDOS | ProDOS user defined file type F6
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FiletypeUserDefinedF7 Filetype = 0xF7 // | ProDOS | ProDOS user defined file type F7
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FiletypeUserDefinedF8 Filetype = 0xF8 // | ProDOS | ProDOS user defined file type F8
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FiletypeIntegerBASIC Filetype = 0xFA // INT | ProDOS | Integer BASIC program file
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FiletypeIntegerBASICVariables Filetype = 0xFB // IVR | ProDOS | Integer BASIC variables file
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FiletypeApplesoftBASIC Filetype = 0xFC // BAS | ProDOS | Applesoft BASIC program file
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FiletypeApplesoftBASICVariables Filetype = 0xFD // VAR | ProDOS | Applesoft BASIC variables file
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FiletypeRelocatable Filetype = 0xFE // REL | ProDOS | EDASM relocatable object module file
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FiletypeSystem Filetype = 0xFF // SYS | ProDOS | System file
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FiletypeS Filetype = 0x100 // DOS 3.3 Type "S"
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FiletypeNewA Filetype = 0x101 // DOS 3.3 Type "new A"
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FiletypeNewB Filetype = 0x102 // DOS 3.3 Type "new B"
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// | 0D-0E | SOS | SOS reserved for future use
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// | 12-18 | SOS | SOS reserved for future use
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// | 1C-BF | SOS | SOS reserved for future use
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// | C0-EE | ProDOS | ProDOS reserved for future use
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)
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// filetypeInfo holds name information about filetype constants.
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type filetypeInfo struct {
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Type Filetype // The type itself
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Name string // The constant name, without the "Filetype" prefix
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ThreeLetter string // The three-letter abbreviation (ProDOS)
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OneLetter string // The one-letter abbreviation (DOS 3.x)
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Desc string // The description of the type
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Stringified string // (Generated) result of calling String() on the Constant
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Extra bool // If true, exclude from normal display listing
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}
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// names of Filetype constants above
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var filetypeInfos = []filetypeInfo{
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{FiletypeTypeless, "Typeless", "", "", "Typeless file", "", false},
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{FiletypeBadBlocks, "BadBlocks", "", "", "Bad blocks file", "", false},
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{FiletypeSOSPascalCode, "SOSPascalCode", "", "", "PASCAL code file", "", true},
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{FiletypeSOSPascalText, "SOSPascalText", "", "", "PASCAL text file", "", true},
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{FiletypeASCIIText, "ASCIIText", "T", "TXT", "ASCII text file", "", false},
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{FiletypeSOSPascalText2, "SOSPascalText2", "", "", "PASCAL text file", "", true},
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{FiletypeBinary, "Binary", "B", "BIN", "Binary file", "", false},
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{FiletypeFont, "Font", "", "", "Font file", "", true},
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{FiletypeGraphicsScreen, "GraphicsScreen", "", "", "Graphics screen file", "", true},
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{FiletypeBusinessBASIC, "BusinessBASIC", "", "", "Business BASIC program file", "", true},
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{FiletypeBusinessBASICData, "BusinessBASICData", "", "", "Business BASIC data file", "", true},
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{FiletypeSOSWordProcessor, "SOSWordProcessor", "", "", "Word processor file", "", true},
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{FiletypeSOSSystem, "SOSSystem", "", "", "SOS system file", "", true},
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{FiletypeDirectory, "Directory", "", "DIR", "Directory file", "", false},
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{FiletypeRPSData, "RPSData", "", "", "RPS data file", "", true},
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{FiletypeRPSIndex, "RPSIndex", "", "", "RPS index file", "", true},
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{FiletypeAppleWorksDatabase, "AppleWorksDatabase", "", "ADB", "AppleWorks data base file", "", false},
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{FiletypeAppleWorksWordProcessor, "AppleWorksWordProcessor", "", "AWP", "AppleWorks word processing file", "", false},
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{FiletypeAppleWorksSpreadsheet, "AppleWorksSpreadsheet", "", "ASP", "AppleWorks spreadsheet file", "", false},
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{FiletypePascal, "Pascal", "", "PAS", "ProDOS PASCAL file", "", false},
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{FiletypeCommand, "Command", "", "CMD", "Added command file", "", false},
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{FiletypeUserDefinedF1, "UserDefinedF1", "", "", "ProDOS user defined file type F1", "", true},
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{FiletypeUserDefinedF2, "UserDefinedF2", "", "", "ProDOS user defined file type F2", "", true},
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{FiletypeUserDefinedF3, "UserDefinedF3", "", "", "ProDOS user defined file type F3", "", true},
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{FiletypeUserDefinedF4, "UserDefinedF4", "", "", "ProDOS user defined file type F4", "", true},
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{FiletypeUserDefinedF5, "UserDefinedF5", "", "", "ProDOS user defined file type F5", "", true},
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{FiletypeUserDefinedF6, "UserDefinedF6", "", "", "ProDOS user defined file type F6", "", true},
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{FiletypeUserDefinedF7, "UserDefinedF7", "", "", "ProDOS user defined file type F7", "", true},
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{FiletypeUserDefinedF8, "UserDefinedF8", "", "", "ProDOS user defined file type F8", "", true},
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{FiletypeIntegerBASIC, "IntegerBASIC", "I", "INT", "Integer BASIC program file", "", false},
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{FiletypeIntegerBASICVariables, "IntegerBASICVariables", "", "IVR", "Integer BASIC variables file", "", false},
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{FiletypeApplesoftBASIC, "ApplesoftBASIC", "A", "BAS", "Applesoft BASIC program file", "", false},
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{FiletypeApplesoftBASICVariables, "ApplesoftBASICVariables", "", "VAR", "Applesoft BASIC variables file", "", false},
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{FiletypeRelocatable, "Relocatable", "R", "REL", "EDASM relocatable object module file", "", false},
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{FiletypeSystem, "System", "", "SYS", "System file", "", false},
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{FiletypeS, "S", "", "S", `DOS 3.3 Type "S"`, "", false},
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{FiletypeNewA, "NewA", "", "A", `DOS 3.3 Type "new A"`, "", false},
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{FiletypeNewB, "NewB", "", "B", `DOS 3.3 Type "new B"`, "", false},
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}
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var filetypeInfosMap map[Filetype]filetypeInfo
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var filetypeNames []string
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var filetypeNamesExtras []string
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func init() {
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sosReserved := []Filetype{0x0D, 0x0E, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18}
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for i := Filetype(0x1C); i < 0xC0; i++ {
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sosReserved = append(sosReserved, i)
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}
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prodosReserved := []Filetype{}
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for i := Filetype(0xC0); i < 0xEF; i++ {
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prodosReserved = append(prodosReserved, i)
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}
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for _, typ := range sosReserved {
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info := filetypeInfo{
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Type: typ,
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Name: fmt.Sprintf("SOSReserved%02X", int(typ)),
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ThreeLetter: "",
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OneLetter: "",
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Desc: fmt.Sprintf("SOS reserved for future use %02X", int(typ)),
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Extra: true,
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}
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filetypeInfos = append(filetypeInfos, info)
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}
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for _, typ := range prodosReserved {
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info := filetypeInfo{
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Type: typ,
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Name: fmt.Sprintf("ProDOSReserved%02X", int(typ)),
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ThreeLetter: "",
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OneLetter: "",
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Desc: fmt.Sprintf("ProDOS reserved for future use %02X", int(typ)),
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Extra: true,
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}
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filetypeInfos = append(filetypeInfos, info)
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}
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seen := map[string]bool{}
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filetypeInfosMap = make(map[Filetype]filetypeInfo, len(filetypeInfos))
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for i, info := range filetypeInfos {
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info.Stringified = info.Desc + " (" + info.Name
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if info.ThreeLetter != "" && !seen[info.ThreeLetter] {
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info.Stringified += "|" + info.ThreeLetter
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seen[info.ThreeLetter] = true
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}
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if info.OneLetter != "" && info.OneLetter != info.Name && !seen[info.OneLetter] {
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info.Stringified += "|" + info.OneLetter
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seen[info.OneLetter] = true
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}
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info.Stringified += ")"
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filetypeInfos[i] = info
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filetypeInfosMap[info.Type] = info
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filetypeNamesExtras = append(filetypeNamesExtras, info.Stringified)
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if !info.Extra {
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filetypeNames = append(filetypeNames, info.Stringified)
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}
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}
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}
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func (f Filetype) String() string {
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if info, found := filetypeInfosMap[f]; found {
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return info.Stringified
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}
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return fmt.Sprintf("Invalid/unknown filetype %02X", int(f))
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}
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// FiletypeForName returns the filetype for a full, three-letter, or
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// one-letter name for a Filetype.
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func FiletypeForName(name string) (Filetype, error) {
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for _, info := range filetypeInfos {
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if info.Name == name || info.ThreeLetter == name || info.OneLetter == name {
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return info.Type, nil
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}
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}
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return 0, fmt.Errorf("Unknown Filetype: %q", name)
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}
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// FiletypeNames returns a list of all filetype names.
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func FiletypeNames(all bool) []string {
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if all {
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return filetypeNamesExtras
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}
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return filetypeNames
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}
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