Refactor functions into instruction.h - beware of renaming.
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Michael Jumper
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373cab0be6
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19cc6ccc01
133
libguac/include/instruction.h
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133
libguac/include/instruction.h
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is libguac.
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*
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* The Initial Developer of the Original Code is
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* Michael Jumper.
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* Portions created by the Initial Developer are Copyright (C) 2010
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef _GUAC_INSTRUCTION_H
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#define _GUAC_INSTRUCTION_H
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#include "socket.h"
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/**
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* Provides functions and structures for reading, writing, and manipulating
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* Guacamole instructions.
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*
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* @file instruction.h
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*/
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/**
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* Represents a single instruction within the Guacamole protocol.
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*/
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typedef struct guac_instruction {
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/**
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* The opcode of the instruction.
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*/
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char* opcode;
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/**
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* The number of arguments passed to this instruction.
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*/
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int argc;
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/**
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* Array of all arguments passed to this instruction.
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*/
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char** argv;
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} guac_instruction;
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/**
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* Frees all memory allocated to the given instruction.
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*
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* @param instruction The instruction to free.
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*/
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void guac_instruction_free(guac_instruction* instruction);
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/**
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* Returns whether new instruction data is available on the given guac_socket
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* connection for parsing.
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*
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* @param socket The guac_socket connection to use.
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* @param usec_timeout The maximum number of microseconds to wait before
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* giving up.
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* @return A positive value if data is available, negative on error, or
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* zero if no data is currently available.
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*/
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int guac_instruction_waiting(guac_socket* socket, int usec_timeout);
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/**
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* Reads a single instruction from the given guac_socket connection.
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*
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* If an error occurs reading the instruction, NULL is returned,
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* and guac_error is set appropriately.
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*
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* @param socket The guac_socket connection to use.
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* @param usec_timeout The maximum number of microseconds to wait before
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* giving up.
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* @return A new instruction if data was successfully read, NULL on
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* error or if the instruction could not be read completely
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* because the timeout elapsed, in which case guac_error will be
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* set to GUAC_STATUS_INPUT_TIMEOUT and subsequent calls to
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* guac_protocol_read_instruction() will return the parsed instruction
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* once enough data is available.
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*/
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guac_instruction* guac_instruction_read(guac_socket* socket, int usec_timeout);
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/**
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* Reads a single instruction with the given opcode from the given guac_socket
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* connection.
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*
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* If an error occurs reading the instruction, NULL is returned,
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* and guac_error is set appropriately.
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*
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* If the instruction read is not the expected instruction, NULL is returned,
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* and guac_error is set to GUAC_STATUS_BAD_STATE.
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*
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* @param socket The guac_socket connection to use.
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* @param usec_timeout The maximum number of microseconds to wait before
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* giving up.
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* @param opcode The opcode of the instruction to read.
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* @return A new instruction if an instruction with the given opcode was read,
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* NULL otherwise. If an instruction was read, but the instruction had
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* a different opcode, NULL is returned and guac_error is set to
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* GUAC_STATUS_BAD_STATE.
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*/
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guac_instruction* guac_instruction_expect(guac_socket* socket,
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int usec_timeout, const char* opcode);
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#endif
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@ -170,89 +170,6 @@ typedef enum guac_line_join_style {
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GUAC_LINE_JOIN_ROUND = 0x2
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} guac_line_join_style;
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/**
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* Represents a single instruction within the Guacamole protocol.
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*/
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typedef struct guac_instruction {
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/**
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* The opcode of the instruction.
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*/
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char* opcode;
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/**
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* The number of arguments passed to this instruction.
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*/
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int argc;
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/**
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* Array of all arguments passed to this instruction.
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*/
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char** argv;
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} guac_instruction;
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/**
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* Frees all memory allocated to the given instruction.
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*
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* @param instruction The instruction to free.
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*/
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void guac_instruction_free(guac_instruction* instruction);
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/**
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* Returns whether new instruction data is available on the given guac_socket
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* connection for parsing.
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*
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* @param socket The guac_socket connection to use.
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* @param usec_timeout The maximum number of microseconds to wait before
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* giving up.
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* @return A positive value if data is available, negative on error, or
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* zero if no data is currently available.
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*/
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int guac_protocol_instructions_waiting(guac_socket* socket, int usec_timeout);
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/**
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* Reads a single instruction from the given guac_socket connection.
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*
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* If an error occurs reading the instruction, NULL is returned,
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* and guac_error is set appropriately.
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*
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* @param socket The guac_socket connection to use.
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* @param usec_timeout The maximum number of microseconds to wait before
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* giving up.
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* @return A new instruction if data was successfully read, NULL on
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* error or if the instruction could not be read completely
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* because the timeout elapsed, in which case guac_error will be
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* set to GUAC_STATUS_INPUT_TIMEOUT and subsequent calls to
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* guac_protocol_read_instruction() will return the parsed instruction
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* once enough data is available.
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*/
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guac_instruction* guac_protocol_read_instruction(guac_socket* socket,
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int usec_timeout);
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/**
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* Reads a single instruction with the given opcode from the given guac_socket
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* connection.
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*
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* If an error occurs reading the instruction, NULL is returned,
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* and guac_error is set appropriately.
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*
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* If the instruction read is not the expected instruction, NULL is returned,
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* and guac_error is set to GUAC_STATUS_BAD_STATE.
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*
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* @param socket The guac_socket connection to use.
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* @param usec_timeout The maximum number of microseconds to wait before
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* giving up.
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* @param opcode The opcode of the instruction to read.
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* @return A new instruction if an instruction with the given opcode was read,
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* NULL otherwise. If an instruction was read, but the instruction had
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* a different opcode, NULL is returned and guac_error is set to
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* GUAC_STATUS_BAD_STATE.
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*/
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guac_instruction* guac_protocol_expect_instruction(guac_socket* socket,
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int usec_timeout, const char* opcode);
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/**
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* Returns an arbitrary timestamp. The difference between return values of any
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* two calls is equal to the amount of time in milliseconds between those
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