Cleanup, improve communication while printing
This commit is contained in:
parent
4c2f29384d
commit
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GPG Key ID:
A0420B94F92B9493
25
go.mod
25
go.mod
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@ -2,4 +2,27 @@ module janouch.name/sklad
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go 1.12
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go 1.12
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require github.com/boombuler/barcode v1.0.0
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require (
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github.com/boombuler/barcode v1.0.0
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github.com/cosiner/argv v0.0.1 // indirect
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github.com/cpuguy83/go-md2man v1.0.10 // indirect
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github.com/go-delve/delve v1.2.0 // indirect
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github.com/konsorten/go-windows-terminal-sequences v1.0.2 // indirect
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github.com/mattn/go-colorable v0.1.1 // indirect
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github.com/mattn/go-isatty v0.0.7 // indirect
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github.com/mattn/go-runewidth v0.0.4 // indirect
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github.com/peterh/liner v1.1.0 // indirect
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github.com/pkg/profile v1.3.0 // indirect
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github.com/russross/blackfriday v2.0.0+incompatible // indirect
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github.com/sirupsen/logrus v1.4.1 // indirect
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github.com/spf13/cobra v0.0.3 // indirect
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github.com/spf13/pflag v1.0.3 // indirect
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github.com/stretchr/objx v0.2.0 // indirect
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golang.org/x/arch v0.0.0-20190312162104-788fe5ffcd8c // indirect
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golang.org/x/crypto v0.0.0-20190411191339-88737f569e3a // indirect
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golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3 // indirect
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golang.org/x/sys v0.0.0-20190411185658-b44545bcd369 // indirect
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golang.org/x/tools v0.0.0-20190411180116-681f9ce8ac52 // indirect
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gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 // indirect
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gopkg.in/yaml.v2 v2.2.2 // indirect
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)
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68
go.sum
68
go.sum
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@ -1,2 +1,70 @@
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github.com/boombuler/barcode v1.0.0 h1:s1TvRnXwL2xJRaccrdcBQMZxq6X7DvsMogtmJeHDdrc=
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github.com/boombuler/barcode v1.0.0 h1:s1TvRnXwL2xJRaccrdcBQMZxq6X7DvsMogtmJeHDdrc=
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github.com/boombuler/barcode v1.0.0/go.mod h1:paBWMcWSl3LHKBqUq+rly7CNSldXjb2rDl3JlRe0mD8=
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github.com/boombuler/barcode v1.0.0/go.mod h1:paBWMcWSl3LHKBqUq+rly7CNSldXjb2rDl3JlRe0mD8=
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github.com/cosiner/argv v0.0.0-20170225145430-13bacc38a0a5/go.mod h1:p/NrK5tF6ICIly4qwEDsf6VDirFiWWz0FenfYBwJaKQ=
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github.com/cosiner/argv v0.0.1 h1:2iAFN+sWPktbZ4tvxm33Ei8VY66FPCxdOxpncUGpAXE=
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github.com/cosiner/argv v0.0.1/go.mod h1:p/NrK5tF6ICIly4qwEDsf6VDirFiWWz0FenfYBwJaKQ=
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github.com/cpuguy83/go-md2man v1.0.8/go.mod h1:N6JayAiVKtlHSnuTCeuLSQVs75hb8q+dYQLjr7cDsKY=
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github.com/cpuguy83/go-md2man v1.0.10/go.mod h1:SmD6nW6nTyfqj6ABTjUi3V3JVMnlJmwcJI5acqYI6dE=
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github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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github.com/go-delve/delve v1.2.0 h1:uwGyfYO0WsWqbnDWvxCBKOr2qFLpii3tLxwM+fTJs70=
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github.com/go-delve/delve v1.2.0/go.mod h1:yP+LD36s/ud5nm4lsQY0TwNhYu2PAwk6xItz+442j74=
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github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
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github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
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github.com/konsorten/go-windows-terminal-sequences v1.0.2/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
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github.com/mattn/go-colorable v0.0.0-20170327083344-ded68f7a9561/go.mod h1:9vuHe8Xs5qXnSaW/c/ABM9alt+Vo+STaOChaDxuIBZU=
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github.com/mattn/go-colorable v0.1.1/go.mod h1:FuOcm+DKB9mbwrcAfNl7/TZVBZ6rcnceauSikq3lYCQ=
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github.com/mattn/go-isatty v0.0.3/go.mod h1:M+lRXTBqGeGNdLjl/ufCoiOlB5xdOkqRJdNxMWT7Zi4=
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github.com/mattn/go-isatty v0.0.5/go.mod h1:Iq45c/XA43vh69/j3iqttzPXn0bhXyGjM0Hdxcsrc5s=
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github.com/mattn/go-isatty v0.0.7 h1:UvyT9uN+3r7yLEYSlJsbQGdsaB/a0DlgWP3pql6iwOc=
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github.com/mattn/go-isatty v0.0.7/go.mod h1:Iq45c/XA43vh69/j3iqttzPXn0bhXyGjM0Hdxcsrc5s=
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github.com/mattn/go-runewidth v0.0.3/go.mod h1:LwmH8dsx7+W8Uxz3IHJYH5QSwggIsqBzpuz5H//U1FU=
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github.com/mattn/go-runewidth v0.0.4 h1:2BvfKmzob6Bmd4YsL0zygOqfdFnK7GR4QL06Do4/p7Y=
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github.com/mattn/go-runewidth v0.0.4/go.mod h1:LwmH8dsx7+W8Uxz3IHJYH5QSwggIsqBzpuz5H//U1FU=
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github.com/peterh/liner v0.0.0-20170317030525-88609521dc4b/go.mod h1:xIteQHvHuaLYG9IFj6mSxM0fCKrs34IrEQUhOYuGPHc=
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github.com/peterh/liner v1.1.0 h1:f+aAedNJA6uk7+6rXsYBnhdo4Xux7ESLe+kcuVUF5os=
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github.com/peterh/liner v1.1.0/go.mod h1:CRroGNssyjTd/qIG2FyxByd2S8JEAZXBl4qUrZf8GS0=
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github.com/pkg/profile v0.0.0-20170413231811-06b906832ed0/go.mod h1:hJw3o1OdXxsrSjjVksARp5W95eeEaEfptyVZyv6JUPA=
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github.com/pkg/profile v1.3.0/go.mod h1:hJw3o1OdXxsrSjjVksARp5W95eeEaEfptyVZyv6JUPA=
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github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
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github.com/russross/blackfriday v0.0.0-20180428102519-11635eb403ff/go.mod h1:JO/DiYxRf+HjHt06OyowR9PTA263kcR/rfWxYHBV53g=
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github.com/russross/blackfriday v1.5.2/go.mod h1:JO/DiYxRf+HjHt06OyowR9PTA263kcR/rfWxYHBV53g=
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github.com/russross/blackfriday v2.0.0+incompatible/go.mod h1:JO/DiYxRf+HjHt06OyowR9PTA263kcR/rfWxYHBV53g=
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github.com/sirupsen/logrus v0.0.0-20180523074243-ea8897e79973/go.mod h1:pMByvHTf9Beacp5x1UXfOR9xyW/9antXMhjMPG0dEzc=
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github.com/sirupsen/logrus v1.4.1 h1:GL2rEmy6nsikmW0r8opw9JIRScdMF5hA8cOYLH7In1k=
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github.com/sirupsen/logrus v1.4.1/go.mod h1:ni0Sbl8bgC9z8RoU9G6nDWqqs/fq4eDPysMBDgk/93Q=
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github.com/spf13/cobra v0.0.0-20170417170307-b6cb39589372/go.mod h1:1l0Ry5zgKvJasoi3XT1TypsSe7PqH0Sj9dhYf7v3XqQ=
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github.com/spf13/cobra v0.0.3 h1:ZlrZ4XsMRm04Fr5pSFxBgfND2EBVa1nLpiy1stUsX/8=
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github.com/spf13/cobra v0.0.3/go.mod h1:1l0Ry5zgKvJasoi3XT1TypsSe7PqH0Sj9dhYf7v3XqQ=
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github.com/spf13/pflag v0.0.0-20170417173400-9e4c21054fa1/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
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github.com/spf13/pflag v1.0.3 h1:zPAT6CGy6wXeQ7NtTnaTerfKOsV6V6F8agHXFiazDkg=
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github.com/spf13/pflag v1.0.3/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
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github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
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github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
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github.com/stretchr/objx v0.2.0/go.mod h1:qt09Ya8vawLte6SNmTgCsAVtYtaKzEcn8ATUoHMkEqE=
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github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
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github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
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golang.org/x/arch v0.0.0-20171004143515-077ac972c2e4/go.mod h1:cYlCBUl1MsqxdiKgmc4uh7TxZfWSFLOGSRR090WDxt8=
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golang.org/x/arch v0.0.0-20190312162104-788fe5ffcd8c h1:Rx/HTKi09myZ25t1SOlDHmHOy/mKxNAcu0hP1oPX9qM=
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golang.org/x/arch v0.0.0-20190312162104-788fe5ffcd8c/go.mod h1:flIaEI6LNU6xOCD5PaJvn9wGP0agmIOqjrtsKGRguv4=
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golang.org/x/crypto v0.0.0-20180614174826-fd5f17ee7299/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
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golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
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golang.org/x/crypto v0.0.0-20190411191339-88737f569e3a/go.mod h1:WFFai1msRO1wXaEeE5yQxYXgSfI8pQAWXbQop6sCtWE=
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golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
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golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
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golang.org/x/sys v0.0.0-20180614134839-8883426083c0/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
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golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
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golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
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golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
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golang.org/x/sys v0.0.0-20190403152447-81d4e9dc473e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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golang.org/x/sys v0.0.0-20190411185658-b44545bcd369 h1:aBlRBZoCuZNRDClvfkDoklQqdLzBaA3uViASg2z2p24=
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golang.org/x/sys v0.0.0-20190411185658-b44545bcd369/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
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golang.org/x/tools v0.0.0-20181120060634-fc4f04983f62/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
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golang.org/x/tools v0.0.0-20190411180116-681f9ce8ac52/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
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gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
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gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
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gopkg.in/yaml.v2 v2.0.0-20170407172122-cd8b52f8269e/go.mod h1:JAlM8MvJe8wmxCU4Bli9HhUf9+ttbYbLASfIpnQbh74=
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gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
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gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
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rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4=
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@ -182,7 +182,6 @@ func getStatus(printer *ql.Printer) error {
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if err := printer.UpdateStatus(); err != nil {
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if err := printer.UpdateStatus(); err != nil {
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return err
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return err
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}
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}
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log.Printf("status\n%s", printer.LastStatus)
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return nil
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return nil
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}
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}
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@ -192,17 +191,23 @@ func handle(w http.ResponseWriter, r *http.Request) {
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return
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return
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}
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}
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var initErr error
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var (
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initErr error
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mediaInfo *ql.MediaInfo
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)
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printer, printerErr := getPrinter()
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printer, printerErr := getPrinter()
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if printerErr == nil {
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if printerErr == nil {
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defer printer.Close()
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defer printer.Close()
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initErr = getStatus(printer)
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printer.StatusNotify = func(status *ql.Status) {
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log.Printf("\x1b[1mreceived status\x1b[m\n%s", status)
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}
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}
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var mediaInfo *ql.MediaInfo
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if initErr = getStatus(printer); initErr == nil {
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if printer.LastStatus != nil {
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mediaInfo = ql.GetMediaInfo(
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mediaInfo = ql.GetMediaInfo(printer.LastStatus.MediaWidthMM(),
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printer.LastStatus.MediaWidthMM(),
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printer.LastStatus.MediaLengthMM())
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printer.LastStatus.MediaLengthMM(),
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)
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}
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}
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}
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var params = struct {
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var params = struct {
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@ -269,7 +274,7 @@ func main() {
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log.Fatalln(err)
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log.Fatalln(err)
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}
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}
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log.Println("Starting server")
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log.Println("starting server")
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http.HandleFunc("/", handle)
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http.HandleFunc("/", handle)
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log.Fatal(http.ListenAndServe(":8080", nil))
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log.Fatal(http.ListenAndServe(":8080", nil))
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}
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}
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425
ql/ql.go
425
ql/ql.go
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@ -8,54 +8,11 @@ package ql
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// http://www.undocprint.org/formats/communication_protocols/ieee_1284
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// http://www.undocprint.org/formats/communication_protocols/ieee_1284
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import (
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import (
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"errors"
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"fmt"
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"image"
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"image"
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"io"
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"log"
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"os"
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"path/filepath"
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"regexp"
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"regexp"
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"strings"
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"strings"
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"syscall"
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"time"
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"unsafe"
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)
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)
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// #include <linux/ioctl.h>
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import "C"
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// -----------------------------------------------------------------------------
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func _IOC(dir, typ, nr, size int) uintptr {
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return (uintptr(dir) << C._IOC_DIRSHIFT) |
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(uintptr(typ) << C._IOC_TYPESHIFT) |
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(uintptr(nr) << C._IOC_NRSHIFT) |
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(uintptr(size) << C._IOC_SIZESHIFT)
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}
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const (
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iocnrGetDeviceID = 1
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)
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// lpiocGetDeviceID reads the IEEE-1284 Device ID string of a printer.
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func lpiocGetDeviceID(fd uintptr) ([]byte, error) {
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var buf [1024]byte
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||||||
if _, _, err := syscall.Syscall(syscall.SYS_IOCTL, fd,
|
|
||||||
_IOC(C._IOC_READ, 'P', iocnrGetDeviceID, len(buf)),
|
|
||||||
uintptr(unsafe.Pointer(&buf))); err != 0 {
|
|
||||||
return nil, err
|
|
||||||
}
|
|
||||||
|
|
||||||
// In theory it might get trimmed along the way.
|
|
||||||
length := int(buf[0])<<8 | int(buf[1])
|
|
||||||
if 2+length > len(buf) {
|
|
||||||
return buf[2:], errors.New("the device ID string got trimmed")
|
|
||||||
}
|
|
||||||
|
|
||||||
return buf[2 : 2+length], nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// -----------------------------------------------------------------------------
|
// -----------------------------------------------------------------------------
|
||||||
|
|
||||||
var deviceIDRegexp = regexp.MustCompile(
|
var deviceIDRegexp = regexp.MustCompile(
|
||||||
|
|
@ -96,14 +53,6 @@ func (id deviceID) FindFirst(key, abbreviation string) string {
|
||||||
|
|
||||||
// -----------------------------------------------------------------------------
|
// -----------------------------------------------------------------------------
|
||||||
|
|
||||||
type Printer struct {
|
|
||||||
File *os.File
|
|
||||||
Manufacturer string
|
|
||||||
Model string
|
|
||||||
LastStatus *Status
|
|
||||||
MediaInfo *MediaInfo
|
|
||||||
}
|
|
||||||
|
|
||||||
func compatible(id deviceID) bool {
|
func compatible(id deviceID) bool {
|
||||||
for _, commandSet := range id.Find("COMMAND SET", "CMD") {
|
for _, commandSet := range id.Find("COMMAND SET", "CMD") {
|
||||||
if commandSet == "PT-CBP" {
|
if commandSet == "PT-CBP" {
|
||||||
|
|
@ -113,118 +62,6 @@ func compatible(id deviceID) bool {
|
||||||
return false
|
return false
|
||||||
}
|
}
|
||||||
|
|
||||||
// Open finds and initializes the first USB printer found supporting
|
|
||||||
// the appropriate protocol. Returns nil if no printer could be found.
|
|
||||||
func Open() (*Printer, error) {
|
|
||||||
// Linux usblp module, located in /drivers/usb/class/usblp.c
|
|
||||||
paths, err := filepath.Glob("/dev/usb/lp[0-9]*")
|
|
||||||
if err != nil {
|
|
||||||
return nil, err
|
|
||||||
}
|
|
||||||
for _, candidate := range paths {
|
|
||||||
f, err := os.OpenFile(candidate, os.O_RDWR, 0)
|
|
||||||
if err != nil {
|
|
||||||
continue
|
|
||||||
}
|
|
||||||
// Filter out obvious non-printers.
|
|
||||||
deviceID, err := lpiocGetDeviceID(f.Fd())
|
|
||||||
if err != nil {
|
|
||||||
f.Close()
|
|
||||||
continue
|
|
||||||
}
|
|
||||||
parsedID := parseIEEE1284DeviceID(deviceID)
|
|
||||||
// Filter out printers that wouldn't understand the protocol.
|
|
||||||
if !compatible(parsedID) {
|
|
||||||
f.Close()
|
|
||||||
continue
|
|
||||||
}
|
|
||||||
return &Printer{
|
|
||||||
File: f,
|
|
||||||
Manufacturer: parsedID.FindFirst("MANUFACTURER", "MFG"),
|
|
||||||
Model: parsedID.FindFirst("MODEL", "MDL"),
|
|
||||||
}, nil
|
|
||||||
}
|
|
||||||
return nil, nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// Initialize initializes the printer for further operations.
|
|
||||||
func (p *Printer) Initialize() error {
|
|
||||||
// Clear the print buffer.
|
|
||||||
invalidate := make([]byte, 400)
|
|
||||||
if _, err := p.File.Write(invalidate); err != nil {
|
|
||||||
return err
|
|
||||||
}
|
|
||||||
|
|
||||||
// Initialize.
|
|
||||||
if _, err := p.File.WriteString("\x1b\x40"); err != nil {
|
|
||||||
return err
|
|
||||||
}
|
|
||||||
|
|
||||||
// Flush any former responses in the printer's queue.
|
|
||||||
//
|
|
||||||
// I'm not sure if this is necessary, or rather whether the kernel driver
|
|
||||||
// does any buffering that could cause data to be returned at this point.
|
|
||||||
/*
|
|
||||||
var dummy [32]byte
|
|
||||||
for {
|
|
||||||
if _, err := f.Read(dummy[:]); err == io.EOF {
|
|
||||||
break
|
|
||||||
}
|
|
||||||
}
|
|
||||||
*/
|
|
||||||
|
|
||||||
return nil
|
|
||||||
}
|
|
||||||
|
|
||||||
var errTimeout = errors.New("timeout")
|
|
||||||
var errInvalidRead = errors.New("invalid read")
|
|
||||||
|
|
||||||
// pollStatusBytes waits for the printer to send a status packet and returns
|
|
||||||
// it as raw data.
|
|
||||||
func (p *Printer) pollStatusBytes(
|
|
||||||
timeout time.Duration) (status [32]byte, err error) {
|
|
||||||
start, n := time.Now(), 0
|
|
||||||
for {
|
|
||||||
if n, err = p.File.Read(status[:]); err == io.EOF {
|
|
||||||
time.Sleep(10 * time.Millisecond)
|
|
||||||
} else if err != nil {
|
|
||||||
return status, err
|
|
||||||
} else if n < 32 {
|
|
||||||
return status, errInvalidRead
|
|
||||||
} else {
|
|
||||||
return status, nil
|
|
||||||
}
|
|
||||||
if time.Now().Sub(start) > timeout {
|
|
||||||
return status, errTimeout
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// Request new status information from the printer. The printer
|
|
||||||
// must be in an appropriate mode, i.e. on-line and not currently printing.
|
|
||||||
func (p *Printer) UpdateStatus() error {
|
|
||||||
// Request status information.
|
|
||||||
if _, err := p.File.WriteString("\x1b\x69\x53"); err != nil {
|
|
||||||
return err
|
|
||||||
}
|
|
||||||
|
|
||||||
// Retrieve status information.
|
|
||||||
status, err := p.pollStatusBytes(time.Second)
|
|
||||||
if err != nil {
|
|
||||||
p.LastStatus = nil
|
|
||||||
return err
|
|
||||||
}
|
|
||||||
|
|
||||||
s := Status(status)
|
|
||||||
p.LastStatus = &s
|
|
||||||
return nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// Close closes the underlying file.
|
|
||||||
func (p *Printer) Close() error {
|
|
||||||
return p.File.Close()
|
|
||||||
}
|
|
||||||
|
|
||||||
// -----------------------------------------------------------------------------
|
// -----------------------------------------------------------------------------
|
||||||
|
|
||||||
type mediaSize struct {
|
type mediaSize struct {
|
||||||
|
|
@ -278,30 +115,35 @@ func GetMediaInfo(widthMM, lengthMM int) *MediaInfo {
|
||||||
|
|
||||||
// -----------------------------------------------------------------------------
|
// -----------------------------------------------------------------------------
|
||||||
|
|
||||||
|
const (
|
||||||
|
printBytes = 90
|
||||||
|
printPins = printBytes * 8
|
||||||
|
)
|
||||||
|
|
||||||
// makeBitmapData converts an image to the printer's raster format.
|
// makeBitmapData converts an image to the printer's raster format.
|
||||||
func makeBitmapData(src image.Image, offset, length int) (data []byte) {
|
func makeBitmapData(src image.Image, margin, length int) (data []byte) {
|
||||||
bounds := src.Bounds()
|
bounds := src.Bounds()
|
||||||
pixels := [720]bool{}
|
if bounds.Dy() > length {
|
||||||
|
bounds.Max.Y = bounds.Min.Y + length
|
||||||
|
}
|
||||||
|
if bounds.Dx() > printPins-margin {
|
||||||
|
bounds.Max.X = bounds.Min.X + printPins
|
||||||
|
}
|
||||||
|
|
||||||
|
pixels := [printPins]bool{}
|
||||||
for y := bounds.Min.Y; y < bounds.Max.Y; y++ {
|
for y := bounds.Min.Y; y < bounds.Max.Y; y++ {
|
||||||
length--
|
length--
|
||||||
if length <= 0 {
|
|
||||||
break
|
|
||||||
}
|
|
||||||
|
|
||||||
off := offset
|
// The graphics needs to be inverted horizontally, iterating backwards.
|
||||||
|
offset := margin
|
||||||
for x := bounds.Max.X - 1; x >= bounds.Min.X; x-- {
|
for x := bounds.Max.X - 1; x >= bounds.Min.X; x-- {
|
||||||
if off >= len(pixels) {
|
|
||||||
break
|
|
||||||
}
|
|
||||||
|
|
||||||
// TODO: Anything to do with the ColorModel?
|
|
||||||
r, g, b, a := src.At(x, y).RGBA()
|
r, g, b, a := src.At(x, y).RGBA()
|
||||||
pixels[off] = r == 0 && g == 0 && b == 0 && a != 0
|
pixels[offset] = r == 0 && g == 0 && b == 0 && a >= 0x8000
|
||||||
off++
|
offset++
|
||||||
}
|
}
|
||||||
|
|
||||||
data = append(data, 'g', 0x00, 90)
|
data = append(data, 'g', 0x00, printBytes)
|
||||||
for i := 0; i < 90; i++ {
|
for i := 0; i < printBytes; i++ {
|
||||||
var b byte
|
var b byte
|
||||||
for j := 0; j < 8; j++ {
|
for j := 0; j < 8; j++ {
|
||||||
b <<= 1
|
b <<= 1
|
||||||
|
|
@ -313,17 +155,20 @@ func makeBitmapData(src image.Image, offset, length int) (data []byte) {
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
for ; length > 0; length-- {
|
for ; length > 0; length-- {
|
||||||
data = append(data, 'g', 0x00, 90)
|
data = append(data, 'g', 0x00, printBytes)
|
||||||
data = append(data, make([]byte, 90)...)
|
data = append(data, make([]byte, printBytes)...)
|
||||||
}
|
}
|
||||||
return
|
return
|
||||||
}
|
}
|
||||||
|
|
||||||
func (p *Printer) makePrintData(image image.Image) (data []byte) {
|
func makePrintData(status *Status, image image.Image) (data []byte) {
|
||||||
mediaInfo := GetMediaInfo(
|
mediaInfo := GetMediaInfo(
|
||||||
p.LastStatus.MediaWidthMM(),
|
status.MediaWidthMM(),
|
||||||
p.LastStatus.MediaLengthMM(),
|
status.MediaLengthMM(),
|
||||||
)
|
)
|
||||||
|
if mediaInfo == nil {
|
||||||
|
return nil
|
||||||
|
}
|
||||||
|
|
||||||
// Raster mode.
|
// Raster mode.
|
||||||
// Should be the only supported mode for QL-800.
|
// Should be the only supported mode for QL-800.
|
||||||
|
|
@ -339,12 +184,12 @@ func (p *Printer) makePrintData(image image.Image) (data []byte) {
|
||||||
}
|
}
|
||||||
|
|
||||||
mediaType := byte(0x0a)
|
mediaType := byte(0x0a)
|
||||||
if p.LastStatus.MediaLengthMM() != 0 {
|
if status.MediaLengthMM() != 0 {
|
||||||
mediaType = byte(0x0b)
|
mediaType = byte(0x0b)
|
||||||
}
|
}
|
||||||
|
|
||||||
data = append(data, 0x1b, 0x69, 0x7a, 0x02|0x04|0x40|0x80, mediaType,
|
data = append(data, 0x1b, 0x69, 0x7a, 0x02|0x04|0x40|0x80, mediaType,
|
||||||
byte(p.LastStatus.MediaWidthMM()), byte(p.LastStatus.MediaLengthMM()),
|
byte(status.MediaWidthMM()), byte(status.MediaLengthMM()),
|
||||||
byte(dy), byte(dy>>8), byte(dy>>16), byte(dy>>24), 0, 0x00)
|
byte(dy), byte(dy>>8), byte(dy>>16), byte(dy>>24), 0, 0x00)
|
||||||
|
|
||||||
// Auto cut, each 1 label.
|
// Auto cut, each 1 label.
|
||||||
|
|
@ -355,7 +200,7 @@ func (p *Printer) makePrintData(image image.Image) (data []byte) {
|
||||||
// Not sure what it means, doesn't seem to have any effect to turn it off.
|
// Not sure what it means, doesn't seem to have any effect to turn it off.
|
||||||
data = append(data, 0x1b, 0x69, 0x4b, 0x08)
|
data = append(data, 0x1b, 0x69, 0x4b, 0x08)
|
||||||
|
|
||||||
if p.LastStatus.MediaLengthMM() != 0 {
|
if status.MediaLengthMM() != 0 {
|
||||||
// 3mm margins along the direction of feed. 0x23 = 35 dots, the minimum.
|
// 3mm margins along the direction of feed. 0x23 = 35 dots, the minimum.
|
||||||
data = append(data, 0x1b, 0x69, 0x64, 0x23, 0x00)
|
data = append(data, 0x1b, 0x69, 0x64, 0x23, 0x00)
|
||||||
} else {
|
} else {
|
||||||
|
|
@ -373,211 +218,3 @@ func (p *Printer) makePrintData(image image.Image) (data []byte) {
|
||||||
// Print command with feeding.
|
// Print command with feeding.
|
||||||
return append(data, 0x1a)
|
return append(data, 0x1a)
|
||||||
}
|
}
|
||||||
|
|
||||||
func (p *Printer) Print(image image.Image) error {
|
|
||||||
data := p.makePrintData(image)
|
|
||||||
|
|
||||||
// Print the prepared data.
|
|
||||||
if _, err := p.File.Write(data); err != nil {
|
|
||||||
return err
|
|
||||||
}
|
|
||||||
|
|
||||||
// TODO: We specifically need to wait for a transition to the receiving
|
|
||||||
// state, and try to figure out something from the statuses.
|
|
||||||
// We may also receive an error status instead of the transition to
|
|
||||||
// the printing state. Or even after it.
|
|
||||||
start, b := time.Now(), [32]byte{}
|
|
||||||
for {
|
|
||||||
if n, err := p.File.Read(b[:]); err == io.EOF {
|
|
||||||
time.Sleep(100 * time.Millisecond)
|
|
||||||
} else if err != nil {
|
|
||||||
return err
|
|
||||||
} else if n < 32 {
|
|
||||||
return errors.New("invalid read")
|
|
||||||
} else {
|
|
||||||
status := Status(b)
|
|
||||||
log.Printf("status\n%s", &status)
|
|
||||||
}
|
|
||||||
if time.Now().Sub(start) > 3*time.Second {
|
|
||||||
break
|
|
||||||
}
|
|
||||||
}
|
|
||||||
return nil
|
|
||||||
}
|
|
||||||
|
|
||||||
// -----------------------------------------------------------------------------
|
|
||||||
|
|
||||||
// Status is a decoder for the status packed returned by the printer.
|
|
||||||
type Status [32]byte
|
|
||||||
|
|
||||||
func (s *Status) MediaWidthMM() int { return int(s[10]) }
|
|
||||||
func (s *Status) MediaLengthMM() int { return int(s[17]) }
|
|
||||||
|
|
||||||
func decodeBitfieldErrors(b byte, errors [8]string) []string {
|
|
||||||
var result []string
|
|
||||||
for i := uint(0); i < 8; i++ {
|
|
||||||
if b&(1<<i) != 0 {
|
|
||||||
result = append(result, errors[i])
|
|
||||||
}
|
|
||||||
}
|
|
||||||
return result
|
|
||||||
}
|
|
||||||
|
|
||||||
func (s *Status) Errors() (errors []string) {
|
|
||||||
errors = append(errors, decodeBitfieldErrors(s[8], [8]string{
|
|
||||||
"no media", "end of media", "cutter jam", "?", "printer in use",
|
|
||||||
"printer turned off", "high-voltage adapter", "fan motor error"})...)
|
|
||||||
errors = append(errors, decodeBitfieldErrors(s[9], [8]string{
|
|
||||||
"replace media", "expansion buffer full", "communication error",
|
|
||||||
"communication buffer full", "cover open", "cancel key",
|
|
||||||
"media cannot be fed", "system error"})...)
|
|
||||||
return
|
|
||||||
}
|
|
||||||
|
|
||||||
// String implements the Stringer interface.
|
|
||||||
func (s *Status) String() string {
|
|
||||||
var b strings.Builder
|
|
||||||
s.Dump(&b)
|
|
||||||
return b.String()
|
|
||||||
}
|
|
||||||
|
|
||||||
// Dump writes the status data to an io.Writer in a human-readable format.
|
|
||||||
func (s *Status) Dump(f io.Writer) {
|
|
||||||
/*
|
|
||||||
if s[0] != 0x80 || s[1] != 0x20 || s[2] != 0x42 || s[3] != 0x34 {
|
|
||||||
fmt.Fprintln(f, "unexpected status fixed bytes")
|
|
||||||
}
|
|
||||||
*/
|
|
||||||
|
|
||||||
// Model code.
|
|
||||||
switch m := s[4]; m {
|
|
||||||
case 0x38:
|
|
||||||
fmt.Fprintln(f, "model: QL-800")
|
|
||||||
case 0x39:
|
|
||||||
fmt.Fprintln(f, "model: QL-810W")
|
|
||||||
case 0x41:
|
|
||||||
fmt.Fprintln(f, "model: QL-820NWB")
|
|
||||||
case 0x43:
|
|
||||||
fmt.Fprintln(f, "model: QL-1100")
|
|
||||||
case 0x44:
|
|
||||||
fmt.Fprintln(f, "model: QL-1110NWB")
|
|
||||||
case 0x45:
|
|
||||||
fmt.Fprintln(f, "model: QL-1115NWB")
|
|
||||||
default:
|
|
||||||
fmt.Fprintln(f, "model:", m)
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
// s[6] seems to be 0x00 in a real-world QL-800, as in QL-1100 docs.
|
|
||||||
if s[5] != 0x30 || s[6] != 0x30 || s[7] != 0x00 {
|
|
||||||
fmt.Fprintln(f, "unexpected status fixed bytes")
|
|
||||||
}
|
|
||||||
*/
|
|
||||||
|
|
||||||
// Error information 1.
|
|
||||||
for _, e := range decodeBitfieldErrors(s[8], [8]string{
|
|
||||||
"no media", "end of media", "cutter jam", "?", "printer in use",
|
|
||||||
"printer turned off", "high-voltage adapter", "fan motor error"}) {
|
|
||||||
fmt.Fprintln(f, "error 1:", e)
|
|
||||||
}
|
|
||||||
|
|
||||||
// Error information 2.
|
|
||||||
for _, e := range decodeBitfieldErrors(s[9], [8]string{
|
|
||||||
"replace media", "expansion buffer full", "communication error",
|
|
||||||
"communication buffer full", "cover open", "cancel key",
|
|
||||||
"media cannot be fed", "system error"}) {
|
|
||||||
fmt.Fprintln(f, "error 2:", e)
|
|
||||||
}
|
|
||||||
|
|
||||||
// Media width.
|
|
||||||
fmt.Fprintln(f, "media width:", s[10], "mm")
|
|
||||||
|
|
||||||
// Media type.
|
|
||||||
switch t := s[11]; t {
|
|
||||||
case 0x00:
|
|
||||||
fmt.Fprintln(f, "media: no media")
|
|
||||||
case 0x4a, 0x0a: // 0x4a = J, in reality we get 0x0a, as in QL-1100 docs.
|
|
||||||
fmt.Fprintln(f, "media: continuous length tape")
|
|
||||||
case 0x4b, 0x0b: // 0x4b = K, in reality we get 0x0b, as in QL-1100 docs.
|
|
||||||
fmt.Fprintln(f, "media: die-cut labels")
|
|
||||||
default:
|
|
||||||
fmt.Fprintln(f, "media:", t)
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
// In a real-world QL-800, s[14] seems to be:
|
|
||||||
// 0x01 with die-cut 29mm long labels,
|
|
||||||
// 0x14 with 29mm tape,
|
|
||||||
// 0x23 with red-black 62mm tape,
|
|
||||||
// and directly corresponds to physical pins on the tape.
|
|
||||||
if s[12] != 0x00 || s[13] != 0x00 || s[14] != 0x3f {
|
|
||||||
fmt.Fprintln(f, "unexpected status fixed bytes")
|
|
||||||
}
|
|
||||||
*/
|
|
||||||
|
|
||||||
// Mode.
|
|
||||||
fmt.Fprintln(f, "mode:", s[15])
|
|
||||||
|
|
||||||
/*
|
|
||||||
if s[16] != 0x00 {
|
|
||||||
fmt.Fprintln(f, "unexpected status fixed bytes")
|
|
||||||
}
|
|
||||||
*/
|
|
||||||
|
|
||||||
// Media length.
|
|
||||||
fmt.Fprintln(f, "media length:", s[17], "mm")
|
|
||||||
|
|
||||||
// Status type.
|
|
||||||
switch t := s[18]; t {
|
|
||||||
case 0x00:
|
|
||||||
fmt.Fprintln(f, "status type: reply to status request")
|
|
||||||
case 0x01:
|
|
||||||
fmt.Fprintln(f, "status type: printing completed")
|
|
||||||
case 0x02:
|
|
||||||
fmt.Fprintln(f, "status type: error occurred")
|
|
||||||
case 0x04:
|
|
||||||
fmt.Fprintln(f, "status type: turned off")
|
|
||||||
case 0x05:
|
|
||||||
fmt.Fprintln(f, "status type: notification")
|
|
||||||
case 0x06:
|
|
||||||
fmt.Fprintln(f, "status type: phase change")
|
|
||||||
default:
|
|
||||||
fmt.Fprintln(f, "status type:", t)
|
|
||||||
}
|
|
||||||
|
|
||||||
// Phase type.
|
|
||||||
switch t := s[19]; t {
|
|
||||||
case 0x00:
|
|
||||||
fmt.Fprintln(f, "phase state: receiving state")
|
|
||||||
case 0x01:
|
|
||||||
fmt.Fprintln(f, "phase state: printing state")
|
|
||||||
default:
|
|
||||||
fmt.Fprintln(f, "phase state:", t)
|
|
||||||
}
|
|
||||||
|
|
||||||
// Phase number.
|
|
||||||
fmt.Fprintln(f, "phase number:", int(s[20])*256+int(s[21]))
|
|
||||||
|
|
||||||
// Notification number.
|
|
||||||
switch n := s[22]; n {
|
|
||||||
case 0x00:
|
|
||||||
fmt.Fprintln(f, "notification number: not available")
|
|
||||||
case 0x03:
|
|
||||||
fmt.Fprintln(f, "notification number: cooling (started)")
|
|
||||||
case 0x04:
|
|
||||||
fmt.Fprintln(f, "notification number: cooling (finished)")
|
|
||||||
default:
|
|
||||||
fmt.Fprintln(f, "notification number:", n)
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
// In a real-world QL-800, s[25] seems to be:
|
|
||||||
// 0x01 with 29mm tape or die-cut 29mm long labels,
|
|
||||||
// 0x81 with red-black 62mm tape.
|
|
||||||
if s[23] != 0x00 || s[24] != 0x00 || s[25] != 0x00 || s[26] != 0x00 ||
|
|
||||||
s[27] != 0x00 || s[28] != 0x00 || s[29] != 0x00 || s[30] != 0x00 ||
|
|
||||||
s[31] != 0x00 {
|
|
||||||
fmt.Fprintln(f, "unexpected status fixed bytes")
|
|
||||||
}
|
|
||||||
*/
|
|
||||||
}
|
|
||||||
|
|
|
||||||
|
|
@ -0,0 +1,212 @@
|
||||||
|
package ql
|
||||||
|
|
||||||
|
import (
|
||||||
|
"errors"
|
||||||
|
"image"
|
||||||
|
"io"
|
||||||
|
"os"
|
||||||
|
"path/filepath"
|
||||||
|
"syscall"
|
||||||
|
"time"
|
||||||
|
"unsafe"
|
||||||
|
)
|
||||||
|
|
||||||
|
// #include <linux/ioctl.h>
|
||||||
|
import "C"
|
||||||
|
|
||||||
|
// -----------------------------------------------------------------------------
|
||||||
|
|
||||||
|
func _IOC(dir, typ, nr, size int) uintptr {
|
||||||
|
return (uintptr(dir) << C._IOC_DIRSHIFT) |
|
||||||
|
(uintptr(typ) << C._IOC_TYPESHIFT) |
|
||||||
|
(uintptr(nr) << C._IOC_NRSHIFT) |
|
||||||
|
(uintptr(size) << C._IOC_SIZESHIFT)
|
||||||
|
}
|
||||||
|
|
||||||
|
const (
|
||||||
|
iocnrGetDeviceID = 1
|
||||||
|
)
|
||||||
|
|
||||||
|
// lpiocGetDeviceID reads the IEEE-1284 Device ID string of a printer.
|
||||||
|
func lpiocGetDeviceID(fd uintptr) ([]byte, error) {
|
||||||
|
var buf [1024]byte
|
||||||
|
if _, _, err := syscall.Syscall(syscall.SYS_IOCTL, fd,
|
||||||
|
_IOC(C._IOC_READ, 'P', iocnrGetDeviceID, len(buf)),
|
||||||
|
uintptr(unsafe.Pointer(&buf))); err != 0 {
|
||||||
|
return nil, err
|
||||||
|
}
|
||||||
|
|
||||||
|
// In theory it might get trimmed along the way.
|
||||||
|
length := int(buf[0])<<8 | int(buf[1])
|
||||||
|
if 2+length > len(buf) {
|
||||||
|
return buf[2:], errors.New("the device ID string got trimmed")
|
||||||
|
}
|
||||||
|
|
||||||
|
return buf[2 : 2+length], nil
|
||||||
|
}
|
||||||
|
|
||||||
|
// -----------------------------------------------------------------------------
|
||||||
|
|
||||||
|
type Printer struct {
|
||||||
|
File *os.File
|
||||||
|
Manufacturer string
|
||||||
|
Model string
|
||||||
|
|
||||||
|
LastStatus *Status
|
||||||
|
MediaInfo *MediaInfo
|
||||||
|
|
||||||
|
// StatusNotify is called whenever we receive a status packet.
|
||||||
|
StatusNotify func(*Status)
|
||||||
|
}
|
||||||
|
|
||||||
|
// Open finds and initializes the first USB printer found supporting
|
||||||
|
// the appropriate protocol. Returns nil if no printer could be found.
|
||||||
|
func Open() (*Printer, error) {
|
||||||
|
// Linux usblp module, located in /drivers/usb/class/usblp.c
|
||||||
|
paths, err := filepath.Glob("/dev/usb/lp[0-9]*")
|
||||||
|
if err != nil {
|
||||||
|
return nil, err
|
||||||
|
}
|
||||||
|
for _, candidate := range paths {
|
||||||
|
f, err := os.OpenFile(candidate, os.O_RDWR, 0)
|
||||||
|
if err != nil {
|
||||||
|
continue
|
||||||
|
}
|
||||||
|
// Filter out obvious non-printers.
|
||||||
|
deviceID, err := lpiocGetDeviceID(f.Fd())
|
||||||
|
if err != nil {
|
||||||
|
f.Close()
|
||||||
|
continue
|
||||||
|
}
|
||||||
|
parsedID := parseIEEE1284DeviceID(deviceID)
|
||||||
|
// Filter out printers that wouldn't understand the protocol.
|
||||||
|
if !compatible(parsedID) {
|
||||||
|
f.Close()
|
||||||
|
continue
|
||||||
|
}
|
||||||
|
return &Printer{
|
||||||
|
File: f,
|
||||||
|
Manufacturer: parsedID.FindFirst("MANUFACTURER", "MFG"),
|
||||||
|
Model: parsedID.FindFirst("MODEL", "MDL"),
|
||||||
|
}, nil
|
||||||
|
}
|
||||||
|
return nil, nil
|
||||||
|
}
|
||||||
|
|
||||||
|
// Initialize initializes the printer for further operations.
|
||||||
|
func (p *Printer) Initialize() error {
|
||||||
|
// Clear the print buffer.
|
||||||
|
invalidate := make([]byte, 400)
|
||||||
|
if _, err := p.File.Write(invalidate); err != nil {
|
||||||
|
return err
|
||||||
|
}
|
||||||
|
|
||||||
|
// Initialize.
|
||||||
|
if _, err := p.File.WriteString("\x1b\x40"); err != nil {
|
||||||
|
return err
|
||||||
|
}
|
||||||
|
|
||||||
|
// Flush any former responses in the printer's queue.
|
||||||
|
//
|
||||||
|
// I'm not sure if this is necessary, or rather whether the kernel driver
|
||||||
|
// does any buffering that could cause data to be returned at this point.
|
||||||
|
/*
|
||||||
|
var dummy [32]byte
|
||||||
|
for {
|
||||||
|
if _, err := f.Read(dummy[:]); err == io.EOF {
|
||||||
|
break
|
||||||
|
}
|
||||||
|
}
|
||||||
|
*/
|
||||||
|
|
||||||
|
return nil
|
||||||
|
}
|
||||||
|
|
||||||
|
var errTimeout = errors.New("timeout")
|
||||||
|
var errInvalidRead = errors.New("invalid read")
|
||||||
|
|
||||||
|
func (p *Printer) updateStatus(status Status) {
|
||||||
|
p.LastStatus = &status
|
||||||
|
if p.StatusNotify != nil {
|
||||||
|
p.StatusNotify(p.LastStatus)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// pollStatusBytes waits for the printer to send a status packet and returns
|
||||||
|
// it as raw data.
|
||||||
|
func (p *Printer) pollStatusBytes(
|
||||||
|
timeout time.Duration) (*Status, error) {
|
||||||
|
start, buf := time.Now(), [32]byte{}
|
||||||
|
for {
|
||||||
|
if n, err := p.File.Read(buf[:]); err == io.EOF {
|
||||||
|
time.Sleep(10 * time.Millisecond)
|
||||||
|
} else if err != nil {
|
||||||
|
return nil, err
|
||||||
|
} else if n < 32 {
|
||||||
|
return nil, errInvalidRead
|
||||||
|
} else {
|
||||||
|
p.updateStatus(Status(buf))
|
||||||
|
return p.LastStatus, nil
|
||||||
|
}
|
||||||
|
if time.Now().Sub(start) > timeout {
|
||||||
|
return nil, errTimeout
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// Request new status information from the printer. The printer
|
||||||
|
// must be in an appropriate mode, i.e. on-line and not currently printing.
|
||||||
|
func (p *Printer) UpdateStatus() error {
|
||||||
|
// Request status information.
|
||||||
|
if _, err := p.File.WriteString("\x1b\x69\x53"); err != nil {
|
||||||
|
return err
|
||||||
|
}
|
||||||
|
|
||||||
|
// Retrieve status information.
|
||||||
|
if _, err := p.pollStatusBytes(time.Second); err != nil {
|
||||||
|
p.LastStatus = nil
|
||||||
|
return err
|
||||||
|
}
|
||||||
|
return nil
|
||||||
|
}
|
||||||
|
|
||||||
|
var errErrorOccurred = errors.New("error occurred")
|
||||||
|
var errUnexpectedStatus = errors.New("unexpected status")
|
||||||
|
var errUnknownMedia = errors.New("unknown media")
|
||||||
|
|
||||||
|
func (p *Printer) Print(image image.Image) error {
|
||||||
|
data := makePrintData(p.LastStatus, image)
|
||||||
|
if data == nil {
|
||||||
|
return errUnknownMedia
|
||||||
|
}
|
||||||
|
if _, err := p.File.Write(data); err != nil {
|
||||||
|
return err
|
||||||
|
}
|
||||||
|
|
||||||
|
// See diagrams: we may receive an error status instead of the transition
|
||||||
|
// to the printing state. Or even after it.
|
||||||
|
//
|
||||||
|
// Not sure how exactly cooling behaves and I don't want to test it.
|
||||||
|
for {
|
||||||
|
status, err := p.pollStatusBytes(10 * time.Second)
|
||||||
|
if err != nil {
|
||||||
|
return err
|
||||||
|
}
|
||||||
|
|
||||||
|
switch status.Type() {
|
||||||
|
case StatusTypePhaseChange:
|
||||||
|
// Nothing to do.
|
||||||
|
case StatusTypePrintingCompleted:
|
||||||
|
return nil
|
||||||
|
case StatusTypeErrorOccurred:
|
||||||
|
return errErrorOccurred
|
||||||
|
default:
|
||||||
|
return errUnexpectedStatus
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// Close closes the underlying file.
|
||||||
|
func (p *Printer) Close() error {
|
||||||
|
return p.File.Close()
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,206 @@
|
||||||
|
package ql
|
||||||
|
|
||||||
|
import (
|
||||||
|
"fmt"
|
||||||
|
"io"
|
||||||
|
"strings"
|
||||||
|
)
|
||||||
|
|
||||||
|
// Status is a decoder for the status packed returned by the printer.
|
||||||
|
type Status [32]byte
|
||||||
|
|
||||||
|
func (s *Status) MediaWidthMM() int { return int(s[10]) }
|
||||||
|
func (s *Status) MediaLengthMM() int { return int(s[17]) }
|
||||||
|
|
||||||
|
type StatusType byte
|
||||||
|
|
||||||
|
const (
|
||||||
|
StatusTypeReplyToRequest StatusType = 0x00
|
||||||
|
StatusTypePrintingCompleted = 0x01
|
||||||
|
StatusTypeErrorOccurred = 0x02
|
||||||
|
StatusTypeTurnedOff = 0x04
|
||||||
|
StatusTypeNotification = 0x05
|
||||||
|
StatusTypePhaseChange = 0x06
|
||||||
|
)
|
||||||
|
|
||||||
|
func (s *Status) Type() StatusType { return StatusType(s[18]) }
|
||||||
|
|
||||||
|
type StatusPhase byte
|
||||||
|
|
||||||
|
const (
|
||||||
|
StatusPhaseReceiving StatusPhase = 0x00
|
||||||
|
StatusPhasePrinting = 0x01
|
||||||
|
)
|
||||||
|
|
||||||
|
func (s *Status) Phase() StatusPhase { return StatusPhase(s[19]) }
|
||||||
|
|
||||||
|
func decodeBitfieldErrors(b byte, errors [8]string) []string {
|
||||||
|
var result []string
|
||||||
|
for i := uint(0); i < 8; i++ {
|
||||||
|
if b&(1<<i) != 0 {
|
||||||
|
result = append(result, errors[i])
|
||||||
|
}
|
||||||
|
}
|
||||||
|
return result
|
||||||
|
}
|
||||||
|
|
||||||
|
func (s *Status) Errors() (errors []string) {
|
||||||
|
errors = append(errors, decodeBitfieldErrors(s[8], [8]string{
|
||||||
|
"no media", "end of media", "cutter jam", "?", "printer in use",
|
||||||
|
"printer turned off", "high-voltage adapter", "fan motor error"})...)
|
||||||
|
errors = append(errors, decodeBitfieldErrors(s[9], [8]string{
|
||||||
|
"replace media", "expansion buffer full", "communication error",
|
||||||
|
"communication buffer full", "cover open", "cancel key",
|
||||||
|
"media cannot be fed", "system error"})...)
|
||||||
|
return
|
||||||
|
}
|
||||||
|
|
||||||
|
// -----------------------------------------------------------------------------
|
||||||
|
|
||||||
|
// String implements the Stringer interface.
|
||||||
|
func (s *Status) String() string {
|
||||||
|
var b strings.Builder
|
||||||
|
s.Dump(&b)
|
||||||
|
return b.String()
|
||||||
|
}
|
||||||
|
|
||||||
|
// Dump writes the status data to an io.Writer in a human-readable format.
|
||||||
|
func (s *Status) Dump(f io.Writer) {
|
||||||
|
/*
|
||||||
|
if s[0] != 0x80 || s[1] != 0x20 || s[2] != 0x42 || s[3] != 0x34 {
|
||||||
|
fmt.Fprintln(f, "unexpected status fixed bytes")
|
||||||
|
}
|
||||||
|
*/
|
||||||
|
|
||||||
|
// Model code.
|
||||||
|
switch m := s[4]; m {
|
||||||
|
case 0x38:
|
||||||
|
fmt.Fprintln(f, "model: QL-800")
|
||||||
|
case 0x39:
|
||||||
|
fmt.Fprintln(f, "model: QL-810W")
|
||||||
|
case 0x41:
|
||||||
|
fmt.Fprintln(f, "model: QL-820NWB")
|
||||||
|
case 0x43:
|
||||||
|
fmt.Fprintln(f, "model: QL-1100")
|
||||||
|
case 0x44:
|
||||||
|
fmt.Fprintln(f, "model: QL-1110NWB")
|
||||||
|
case 0x45:
|
||||||
|
fmt.Fprintln(f, "model: QL-1115NWB")
|
||||||
|
default:
|
||||||
|
fmt.Fprintln(f, "model:", m)
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
// s[6] seems to be 0x00 in a real-world QL-800, as in QL-1100 docs.
|
||||||
|
if s[5] != 0x30 || s[6] != 0x30 || s[7] != 0x00 {
|
||||||
|
fmt.Fprintln(f, "unexpected status fixed bytes")
|
||||||
|
}
|
||||||
|
*/
|
||||||
|
|
||||||
|
// Error information 1.
|
||||||
|
for _, e := range decodeBitfieldErrors(s[8], [8]string{
|
||||||
|
"no media", "end of media", "cutter jam", "?", "printer in use",
|
||||||
|
"printer turned off", "high-voltage adapter", "fan motor error"}) {
|
||||||
|
fmt.Fprintln(f, "error 1:", e)
|
||||||
|
}
|
||||||
|
|
||||||
|
// Error information 2.
|
||||||
|
for _, e := range decodeBitfieldErrors(s[9], [8]string{
|
||||||
|
"replace media", "expansion buffer full", "communication error",
|
||||||
|
"communication buffer full", "cover open", "cancel key",
|
||||||
|
"media cannot be fed", "system error"}) {
|
||||||
|
fmt.Fprintln(f, "error 2:", e)
|
||||||
|
}
|
||||||
|
|
||||||
|
// Media width.
|
||||||
|
fmt.Fprintln(f, "media width:", s[10], "mm")
|
||||||
|
|
||||||
|
// Media type.
|
||||||
|
switch t := s[11]; t {
|
||||||
|
case 0x00:
|
||||||
|
fmt.Fprintln(f, "media: no media")
|
||||||
|
case 0x4a, 0x0a: // 0x4a = J, in reality we get 0x0a, as in QL-1100 docs.
|
||||||
|
fmt.Fprintln(f, "media: continuous length tape")
|
||||||
|
case 0x4b, 0x0b: // 0x4b = K, in reality we get 0x0b, as in QL-1100 docs.
|
||||||
|
fmt.Fprintln(f, "media: die-cut labels")
|
||||||
|
default:
|
||||||
|
fmt.Fprintln(f, "media:", t)
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
// In a real-world QL-800, s[14] seems to be:
|
||||||
|
// 0x01 with die-cut 29mm long labels,
|
||||||
|
// 0x14 with 29mm tape,
|
||||||
|
// 0x23 with red-black 62mm tape,
|
||||||
|
// and directly corresponds to physical pins on the tape.
|
||||||
|
if s[12] != 0x00 || s[13] != 0x00 || s[14] != 0x3f {
|
||||||
|
fmt.Fprintln(f, "unexpected status fixed bytes")
|
||||||
|
}
|
||||||
|
*/
|
||||||
|
|
||||||
|
// Mode.
|
||||||
|
fmt.Fprintln(f, "mode:", s[15])
|
||||||
|
|
||||||
|
/*
|
||||||
|
if s[16] != 0x00 {
|
||||||
|
fmt.Fprintln(f, "unexpected status fixed bytes")
|
||||||
|
}
|
||||||
|
*/
|
||||||
|
|
||||||
|
// Media length.
|
||||||
|
fmt.Fprintln(f, "media length:", s[17], "mm")
|
||||||
|
|
||||||
|
// Status type.
|
||||||
|
switch t := s[18]; t {
|
||||||
|
case 0x00:
|
||||||
|
fmt.Fprintln(f, "status type: reply to status request")
|
||||||
|
case 0x01:
|
||||||
|
fmt.Fprintln(f, "status type: printing completed")
|
||||||
|
case 0x02:
|
||||||
|
fmt.Fprintln(f, "status type: error occurred")
|
||||||
|
case 0x04:
|
||||||
|
fmt.Fprintln(f, "status type: turned off")
|
||||||
|
case 0x05:
|
||||||
|
fmt.Fprintln(f, "status type: notification")
|
||||||
|
case 0x06:
|
||||||
|
fmt.Fprintln(f, "status type: phase change")
|
||||||
|
default:
|
||||||
|
fmt.Fprintln(f, "status type:", t)
|
||||||
|
}
|
||||||
|
|
||||||
|
// Phase type.
|
||||||
|
switch t := s[19]; t {
|
||||||
|
case 0x00:
|
||||||
|
fmt.Fprintln(f, "phase state: receiving state")
|
||||||
|
case 0x01:
|
||||||
|
fmt.Fprintln(f, "phase state: printing state")
|
||||||
|
default:
|
||||||
|
fmt.Fprintln(f, "phase state:", t)
|
||||||
|
}
|
||||||
|
|
||||||
|
// Phase number.
|
||||||
|
fmt.Fprintln(f, "phase number:", int(s[20])*256+int(s[21]))
|
||||||
|
|
||||||
|
// Notification number.
|
||||||
|
switch n := s[22]; n {
|
||||||
|
case 0x00:
|
||||||
|
fmt.Fprintln(f, "notification number: not available")
|
||||||
|
case 0x03:
|
||||||
|
fmt.Fprintln(f, "notification number: cooling (started)")
|
||||||
|
case 0x04:
|
||||||
|
fmt.Fprintln(f, "notification number: cooling (finished)")
|
||||||
|
default:
|
||||||
|
fmt.Fprintln(f, "notification number:", n)
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
// In a real-world QL-800, s[25] seems to be:
|
||||||
|
// 0x01 with 29mm tape or die-cut 29mm long labels,
|
||||||
|
// 0x81 with red-black 62mm tape.
|
||||||
|
if s[23] != 0x00 || s[24] != 0x00 || s[25] != 0x00 || s[26] != 0x00 ||
|
||||||
|
s[27] != 0x00 || s[28] != 0x00 || s[29] != 0x00 || s[30] != 0x00 ||
|
||||||
|
s[31] != 0x00 {
|
||||||
|
fmt.Fprintln(f, "unexpected status fixed bytes")
|
||||||
|
}
|
||||||
|
*/
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue