teraterm/teraterm/charset.h

/*
 * (C) 2023- TeraTerm Project
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifdef __cplusplus
extern "C" {
#endif

typedef struct {
        int infos[6];
} CharSetState;

// input
void ParseFirst(BYTE b);

// output buffer
void PutU32(unsigned int code);
void ParseControl(BYTE b);

// control
typedef enum {
        CHARSET_LS0,    // Locking Shift 0, SI, 0F (G0->GL)
        CHARSET_LS1,    // Locking Shift 1, SO, 0E (G1->GL)
        CHARSET_LS2,    // Locking Shift 2, ESC n, 1B 6E (G2->GL)
        CHARSET_LS3,    // Locking Shift 3, ESC o, 1B 6F(G3->GL)
        CHARSET_LS1R,   // Locking Shift 1R, ESC ~, 1B 7E (G1->GR)
        CHARSET_LS2R,   // Locking Shift 2R, ESC }, 1B 7D (G2->GR)
        CHARSET_LS3R,   // Locking Shift 3R, ESC |, 1B 7C (G3->GR)
        CHARSET_SS2,    // Single Shift 2, SS2, 8E, ESC N, 1B 4E
        CHARSET_SS3,    // Single Shift 3, SS3, 8F, ESC O, 1B 4F
} CharSet2022Shift;
void CharSetInit(void);
void CharSet2022Designate(int gn, int cs);
void CharSet2022Invoke(CharSet2022Shift shift);
BOOL CharSetIsSpecial(BYTE b);
void CharSetSaveState(CharSetState *state);
void CharSetLoadState(const CharSetState *state);
void CharSetFallbackFinish(void);

// debug mode
#define DEBUG_FLAG_NONE  0
#define DEBUG_FLAG_NORM  1
#define DEBUG_FLAG_HEXD  2
#define DEBUG_FLAG_NOUT  3
#define DEBUG_FLAG_MAXD  4
void CharSetSetNextDebugMode(void);
//BYTE CharSetGetDebugMode(void);
void CharSetSetDebugMode(BYTE mode);

#ifdef __cplusplus
}
#endif