95 lines
5.7 KiB
C#
95 lines
5.7 KiB
C#
using System;
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using System.Runtime.InteropServices;
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namespace Tanshu.Accounts.Print
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{
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internal class PrinterLinux : PlatformPrinter
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{
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private string location;
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// ReSharper disable InconsistentNaming
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#region API Declarations
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enum http_status_t /**** HTTP status codes ****/
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{
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HTTP_ERROR = -1, /* An error response from httpXxxx() */
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HTTP_CONTINUE = 100, /* Everything OK, keep going... */
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HTTP_SWITCHING_PROTOCOLS, /* HTTP upgrade to TLS/SSL */
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HTTP_OK = 200, /* OPTIONS/GET/HEAD/POST/TRACE command was successful */
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HTTP_CREATED, /* PUT command was successful */
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HTTP_ACCEPTED, /* DELETE command was successful */
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HTTP_NOT_AUTHORITATIVE, /* Information isn't authoritative */
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HTTP_NO_CONTENT, /* Successful command, no new data */
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HTTP_RESET_CONTENT, /* Content was reset/recreated */
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HTTP_PARTIAL_CONTENT, /* Only a partial file was recieved/sent */
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HTTP_MULTIPLE_CHOICES = 300, /* Multiple files match request */
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HTTP_MOVED_PERMANENTLY, /* Document has moved permanently */
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HTTP_MOVED_TEMPORARILY, /* Document has moved temporarily */
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HTTP_SEE_OTHER, /* See this other link... */
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HTTP_NOT_MODIFIED, /* File not modified */
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HTTP_USE_PROXY, /* Must use a proxy to access this URI */
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HTTP_BAD_REQUEST = 400, /* Bad request */
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HTTP_UNAUTHORIZED, /* Unauthorized to access host */
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HTTP_PAYMENT_REQUIRED, /* Payment required */
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HTTP_FORBIDDEN, /* Forbidden to access this URI */
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HTTP_NOT_FOUND, /* URI was not found */
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HTTP_METHOD_NOT_ALLOWED, /* Method is not allowed */
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HTTP_NOT_ACCEPTABLE, /* Not Acceptable */
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HTTP_PROXY_AUTHENTICATION, /* Proxy Authentication is Required */
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HTTP_REQUEST_TIMEOUT, /* Request timed out */
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HTTP_CONFLICT, /* Request is self-conflicting */
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HTTP_GONE, /* Server has gone away */
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HTTP_LENGTH_REQUIRED, /* A content length or encoding is required */
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HTTP_PRECONDITION, /* Precondition failed */
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HTTP_REQUEST_TOO_LARGE, /* Request entity too large */
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HTTP_URI_TOO_LONG, /* URI too long */
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HTTP_UNSUPPORTED_MEDIATYPE, /* The requested media type is unsupported */
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HTTP_REQUESTED_RANGE, /* The requested range is not satisfiable */
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HTTP_EXPECTATION_FAILED, /* The expectation given in an Expect header field was not met */
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HTTP_UPGRADE_REQUIRED = 426, /* Upgrade to SSL/TLS required */
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HTTP_SERVER_ERROR = 500, /* Internal server error */
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HTTP_NOT_IMPLEMENTED, /* Feature not implemented */
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HTTP_BAD_GATEWAY, /* Bad gateway */
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HTTP_SERVICE_UNAVAILABLE, /* Service is unavailable */
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HTTP_GATEWAY_TIMEOUT, /* Gateway connection timed out */
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HTTP_NOT_SUPPORTED, /* HTTP version not supported */
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HTTP_AUTHORIZATION_CANCELED = 1000 /* User canceled authorization */
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} ;
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[DllImport("libcups", CharSet = CharSet.Ansi)]
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static extern int cupsCreateJob(IntPtr http, string name, string title, int num_options, IntPtr options);
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// int cupsCreateJob (http_t *http, const char *name, const char *title, int num_options, cups_option_t *options);
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[DllImport("libcups", CharSet = CharSet.Ansi)]
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static extern int cupsStartDocument(IntPtr http, string name, int job_id, string docname, string format, int last_document);
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// http_status_t cupsStartDocument (http_t *http, const char *name, int job_id, const char *docname, const char *format, int last_document);
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[DllImport("libcups", CharSet = CharSet.Ansi)]
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static extern int cupsWriteRequestData(IntPtr http, string buffer, int length);
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// http_status_t cupsWriteRequestData (http_t *http, const char *buffer, size_t length);
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[DllImport("libcups", CharSet = CharSet.Ansi)]
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static extern int cupsFinishDocument(IntPtr http, string name);
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// ipp_status_t cupsFinishDocument (http_t *http, const char *name);
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const string CUPS_FORMAT_TEXT = "text/plain";
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#endregion
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internal PrinterLinux(string location)
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{
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this.location = location.Substring(5).Normalize();
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}
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internal override bool Print(string documentName, string printingText)
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{
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var cupsOption = new IntPtr(0);
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var CUPS_HTTP_DEFAULT = new IntPtr(0);
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var jobId = cupsCreateJob(CUPS_HTTP_DEFAULT, location, documentName, 0, cupsOption);
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if (jobId > 0)
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{
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cupsStartDocument(CUPS_HTTP_DEFAULT, location, jobId, documentName, CUPS_FORMAT_TEXT, 1);
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cupsWriteRequestData(CUPS_HTTP_DEFAULT, printingText, printingText.Length);
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cupsFinishDocument(CUPS_HTTP_DEFAULT, location);
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}
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return jobId > 0;
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}
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// ReSharper restore InconsistentNaming
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}
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}
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