diff options
Diffstat (limited to 'ql')
| -rw-r--r-- | ql/ql.go | 93 |
1 files changed, 59 insertions, 34 deletions
@@ -5,6 +5,7 @@ package ql // http://etc.nkadesign.com/Printers/QL550LabelPrinterProtocol // https://github.com/torvalds/linux/blob/master/drivers/usb/class/usblp.c // http://www.undocprint.org/formats/page_description_languages/brother_p-touch +// http://www.undocprint.org/formats/communication_protocols/ieee_1284 import ( "errors" @@ -61,8 +62,6 @@ type deviceID map[string][]string // parseIEEE1284DeviceID leniently parses an IEEE 1284 Device ID string // and returns a map containing a slice of values for each key. -// -// See e.g. http://www.undocprint.org/formats/communication_protocols/ieee_1284 func parseIEEE1284DeviceID(id []byte) deviceID { m := make(deviceID) for _, kv := range deviceIDRegexp.FindAllStringSubmatch(string(id), -1) { @@ -85,10 +84,19 @@ func (id deviceID) Find(key, abbreviation string) []string { return nil } +func (id deviceID) FindFirst(key, abbreviation string) string { + for _, s := range id.Find(key, abbreviation) { + return s + } + return "" +} + // ----------------------------------------------------------------------------- type Printer struct { - File *os.File + File *os.File + Manufacturer string + Model string } func compatible(id deviceID) bool { @@ -119,12 +127,17 @@ func Open() (*Printer, error) { f.Close() continue } + parsedID := parseIEEE1284DeviceID(deviceID) // Filter out printers that wouldn't understand the protocol. - if !compatible(parseIEEE1284DeviceID(deviceID)) { + if !compatible(parsedID) { f.Close() continue } - return &Printer{File: f}, nil + return &Printer{ + File: f, + Manufacturer: parsedID.FindFirst("MANUFACTURER", "MFG"), + Model: parsedID.FindFirst("MODEL", "MDL"), + }, nil } return nil, nil } @@ -194,52 +207,61 @@ func (p *Printer) Close() error { type mediaSize struct { WidthMM int - HeightMM int + LengthMM int } -type mediaInfo struct { - // Note that these are approximates, many pins within the margins will work +type MediaInfo struct { + // Note that these are approximates, many pins within the margins will work. SideMarginPins int PrintAreaPins int + // If non-zero, length of the die-cut label print area in 300dpi pins. + PrintAreaLength int } -var media = map[mediaSize]mediaInfo{ +var media = map[mediaSize]MediaInfo{ // Continuous length tape - {12, 0}: {29, 106}, - {29, 0}: {6, 306}, - {38, 0}: {12, 413}, - {50, 0}: {12, 554}, - {54, 0}: {0, 590}, - {62, 0}: {12, 696}, + {12, 0}: {29, 106, 0}, + {29, 0}: {6, 306, 0}, + {38, 0}: {12, 413, 0}, + {50, 0}: {12, 554, 0}, + {54, 0}: {0, 590, 0}, + {62, 0}: {12, 696, 0}, // Die-cut labels - {17, 54}: {0, 165}, - {17, 87}: {0, 165}, - {23, 23}: {42, 236}, - {29, 42}: {6, 306}, - {29, 90}: {6, 306}, - {38, 90}: {12, 413}, - {39, 48}: {6, 425}, - {52, 29}: {0, 578}, - {54, 29}: {59, 602}, - {60, 86}: {24, 672}, - {62, 29}: {12, 696}, - {62, 100}: {12, 696}, + {17, 54}: {0, 165, 566}, + {17, 87}: {0, 165, 956}, + {23, 23}: {42, 236, 202}, + {29, 42}: {6, 306, 425}, + {29, 90}: {6, 306, 991}, + {38, 90}: {12, 413, 991}, + {39, 48}: {6, 425, 495}, + {52, 29}: {0, 578, 271}, + {54, 29}: {59, 602, 271}, + {60, 86}: {24, 672, 954}, + {62, 29}: {12, 696, 271}, + {62, 100}: {12, 696, 1109}, // Die-cut diameter labels - {12, 12}: {113, 94}, - {24, 24}: {42, 236}, - {58, 58}: {51, 618}, + {12, 12}: {113, 94, 94}, + {24, 24}: {42, 236, 236}, + {58, 58}: {51, 618, 618}, +} + +func GetMediaInfo(widthMM, lengthMM int) *MediaInfo { + if mi, ok := media[mediaSize{widthMM, lengthMM}]; ok { + return &mi + } + return nil } +// ----------------------------------------------------------------------------- + type Status struct { MediaWidthMM int MediaLengthMM int Errors []string } -// ----------------------------------------------------------------------------- - func decodeBitfieldErrors(b byte, errors [8]string) []string { var result []string for i := uint(0); i < 8; i++ { @@ -251,8 +273,11 @@ func decodeBitfieldErrors(b byte, errors [8]string) []string { } // TODO: What exactly do we need? Probably extend as needed. -func decodeStatusInformation(d []byte) Status { +func DecodeStatus(d []byte) *Status { var status Status + status.MediaWidthMM = int(d[10]) + status.MediaLengthMM = int(d[17]) + status.Errors = append(status.Errors, decodeBitfieldErrors(d[8], [8]string{ "no media", "end of media", "cutter jam", "?", "printer in use", "printer turned off", "high-voltage adapter", "fan motor error"})...) @@ -260,5 +285,5 @@ func decodeStatusInformation(d []byte) Status { "replace media", "expansion buffer full", "communication error", "communication buffer full", "cover open", "cancel key", "media cannot be fed", "system error"})...) - return status + return &status } |