78 lines
2.5 KiB
C
78 lines
2.5 KiB
C
/*
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* Copyright (C) 2013 Glyptodon LLC
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef _GUAC_TERMINAL_COMMON_H
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#define _GUAC_TERMINAL_COMMON_H
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#include "config.h"
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#include <stdbool.h>
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/**
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* Returns the closest value to the value given that is also
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* within the given range.
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*/
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int guac_terminal_fit_to_range(int value, int min, int max);
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/**
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* Encodes the given codepoint as UTF-8, storing the result within the
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* provided buffer, and returning the number of bytes stored.
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*/
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int guac_terminal_encode_utf8(int codepoint, char* utf8);
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/**
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* Returns whether a codepoint has a corresponding glyph, or is rendered
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* as a blank space.
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*/
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bool guac_terminal_has_glyph(int codepoint);
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/**
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* Similar to write, but automatically retries the write operation until
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* an error occurs.
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*/
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int guac_terminal_write_all(int fd, const char* buffer, int size);
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/**
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* Similar to read, but automatically retries the read until an error occurs,
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* filling all available space within the buffer. Unless it is known that the
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* given amount of space is available on the file descriptor, there is a good
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* chance this function will block.
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*
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* @param fd
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* The file descriptor to read data from.
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*
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* @param buffer
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* The buffer to store data within.
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*
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* @param size
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* The number of bytes available within the buffer.
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*
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* @return
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* The number of bytes read if successful, or a negative value if an error
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* occurs.
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*/
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int guac_terminal_fill_buffer(int fd, char* buffer, int size);
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#endif
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