96 lines
1.9 KiB
C
96 lines
1.9 KiB
C
/*
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* mootermhelper.h
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*
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* Copyright (C) 2004-2006 by Yevgen Muntyan <muntyan@math.tamu.edu>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* See COPYING file that comes with this distribution.
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*/
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#ifndef MOOTERM_COMPILATION
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#error "This file may not be included"
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#endif
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#ifndef __MOO_TERM_HELPER_H__
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#define __MOO_TERM_HELPER_H__
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#define MOO_TERM_HELPER_ENV "MOO_TERM_HELPER_WORKING_DIR"
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typedef enum {
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HELPER_CMD_CHAR = 0,
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HELPER_SET_SIZE = 1,
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HELPER_GOODBYE = 2,
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HELPER_OK = 3
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} HelperCmdCode;
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typedef union {
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char chars[4];
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unsigned num;
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} CharsToUInt;
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inline static char UINT_TO_CHAR_FIRST (unsigned a)
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{
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CharsToUInt c;
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c.num = a;
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return c.chars[1];
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}
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inline static char UINT_TO_CHAR_SECOND (unsigned a)
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{
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CharsToUInt c;
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c.num = a;
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return c.chars[0];
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}
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inline static void UINT_TO_CHARS (unsigned a, char *v)
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{
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CharsToUInt c;
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c.num = a;
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v[0] = c.chars[1];
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v[1] = c.chars[0];
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}
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inline static unsigned CHARS_TO_UINT (char first, char second)
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{
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CharsToUInt c;
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c.chars[2] = c.chars[3] = 0;
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c.chars[0] = second;
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c.chars[1] = first;
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return c.num;
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}
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inline static unsigned CHARS_TO_UINT_S (char *v)
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{
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CharsToUInt c;
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c.chars[2] = c.chars[3] = 0;
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c.chars[0] = v[1];
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c.chars[1] = v[0];
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return c.num;
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}
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#define SIZE_CMD_LEN 6
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inline static const char *set_size_cmd (unsigned width, unsigned height)
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{
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static char cmd[SIZE_CMD_LEN] = {
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HELPER_CMD_CHAR,
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HELPER_SET_SIZE,
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0, 0, 0, 0
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};
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cmd[2] = UINT_TO_CHAR_FIRST (width);
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cmd[3] = UINT_TO_CHAR_SECOND (width);
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cmd[4] = UINT_TO_CHAR_FIRST (height);
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cmd[5] = UINT_TO_CHAR_SECOND (height);
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return cmd;
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}
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#endif /* __MOO_TERM_HELPER_H__ */
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