| 1 | /*
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| 2 | * Copyright (c) 2010 Jiri Svoboda
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | /** @addtogroup libclui
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| 30 | * @{
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| 31 | */
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| 32 | /**
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| 33 | * @file
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| 34 | */
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| 35 |
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| 36 | #ifndef LIBCLUI_TINPUT_H_
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| 37 | #define LIBCLUI_TINPUT_H_
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| 38 |
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| 39 | #include <ipc/ipc.h>
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| 40 |
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| 41 | #define HISTORY_LEN 10
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| 42 | #define INPUT_MAX_SIZE 1024
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| 43 |
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| 44 | /** Text input field (command line).
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| 45 | *
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| 46 | * Applications should treat this structure as opaque.
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| 47 | */
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| 48 | typedef struct {
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| 49 | /** Buffer holding text currently being edited */
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| 50 | wchar_t buffer[INPUT_MAX_SIZE + 1];
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| 51 |
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| 52 | /** Screen coordinates of the top-left corner of the text field */
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| 53 | sysarg_t col0;
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| 54 | sysarg_t row0;
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| 55 |
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| 56 | /** Screen dimensions */
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| 57 | sysarg_t con_cols;
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| 58 | sysarg_t con_rows;
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| 59 |
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| 60 | /** Number of characters in @c buffer */
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| 61 | size_t nc;
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| 62 |
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| 63 | /** Caret position within buffer */
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| 64 | size_t pos;
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| 65 |
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| 66 | /** Selection mark position within buffer */
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| 67 | size_t sel_start;
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| 68 |
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| 69 | /** History (dynamically allocated strings) */
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| 70 | char *history[HISTORY_LEN + 1];
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| 71 |
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| 72 | /** Number of entries in @c history, not counting [0] */
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| 73 | size_t hnum;
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| 74 |
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| 75 | /** Current position in history */
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| 76 | size_t hpos;
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| 77 |
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| 78 | /** @c true if finished with this line (return to caller) */
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| 79 | bool done;
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| 80 |
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| 81 | /** @c true if user requested to abort interactive loop */
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| 82 | bool exit_clui;
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| 83 | } tinput_t;
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| 84 |
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| 85 | extern tinput_t *tinput_new(void);
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| 86 | extern void tinput_destroy(tinput_t *);
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| 87 | extern int tinput_read(tinput_t *, char **);
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| 88 |
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| 89 | #endif
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| 90 |
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| 91 | /** @}
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| 92 | */
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