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e27e2f0229
Keys I keep hitting should work like I expect them to.
Home or Ctrl+A = move to beginning of line
End or Ctrl+E = move to end of line
Del = delete-right
Ctrl+K = delete to end of line
Ctrl+L = clear screen and reprint current line
Ctrl+N = next command
Ctrl+P = previous command
Also, improve filtering of escape sequences and non-printable
characters, so hitting unsupported keys or control codes doesn't mess
up the current line of input.
BUG=chrome-os-partner:11666
TEST=manual
type 'fhelpbar'
home -> cursor moves to beginning of line
Ctrl+E -> cursor moves to end of line
Ctrl+A -> cursor moves to beginning of line
(of course, if you're using Minicom, you'll need to type Ctrl+A A, since
Minicom uses Ctrl+A as its control key)
del -> 'helpbar'
end -> cursor moves to end of line
left-arrow 3 times -> cursor moves under 'b'
Ctrl+L -> screen clears, cursor still under 'b'
Ctrl+K -> 'help'
Ctrl+Y Page-Up Page-Down -> nothing printed
enter -> prints known commands (output of 'help' command)
Ctrl+P -> 'help'
Ctrl+N -> empty command line
Change-Id: Id893c93b26db8f3deed6ea8be5aab88a3daaead4
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/28143
94 lines
2.2 KiB
C
94 lines
2.2 KiB
C
/* Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/* Various utility functions and macros */
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#ifndef __CROS_EC_UTIL_H
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#define __CROS_EC_UTIL_H
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#include "common.h"
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#include "config.h"
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#include "panic.h"
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/**
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* Trigger a compilation failure if the condition
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* is not verified at build time.
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*/
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#define BUILD_ASSERT(cond) ((void)sizeof(char[1 - 2*!(cond)]))
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/**
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* Trigger a debug exception if the condition
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* is not verified at runtime.
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*/
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#ifdef CONFIG_DEBUG
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# ifdef CONFIG_ASSERT_HELP
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# define ASSERT(cond) do { \
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if (!(cond)) \
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panic_assert_fail(#cond, __func__, __FILE__, \
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__LINE__); \
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} while (0);
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# else
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# define ASSERT(cond) do { \
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if (!(cond)) \
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__asm("bkpt"); \
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} while (0);
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# endif
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#else
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#define ASSERT(cond)
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#endif
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/* Standard macros / definitions */
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#ifndef ARRAY_SIZE
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#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
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#endif
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#ifndef MAX
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#define MAX(a, b) ((a) > (b) ? (a) : (b))
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#endif
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#ifndef MIN
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#define MIN(a, b) ((a) < (b) ? (a) : (b))
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#endif
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#ifndef NULL
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#define NULL ((void *)0)
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#endif
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/**
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* macros for integer division with various rounding variants
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* default integer division rounds down.
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*/
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#define DIV_ROUND_UP(x, y) (((x) + ((y) - 1)) / (y))
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#define DIV_ROUND_NEAREST(x, y) (((x) + ((y) / 2)) / (y))
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/* Standard library functions */
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int atoi(const char *nptr);
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int isdigit(int c);
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int isspace(int c);
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int isalpha(int c);
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int isprint(int c);
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void *memcpy(void *dest, const void *src, int len);
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void *memset(void *dest, int c, int len);
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void *memmove(void *dest, const void *src, int len);
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int strcasecmp(const char *s1, const char *s2);
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int strncasecmp(const char *s1, const char *s2, int size);
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int strlen(const char *s);
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/* Like strtol(), but for integers. */
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int strtoi(const char *nptr, char **endptr, int base);
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/* Like strncpy(), but guarantees null termination. */
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char *strzcpy(char *dest, const char *src, int len);
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int tolower(int c);
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/* 64-bit divide-and-modulo. Does the equivalent of:
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*
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* r = *n % d;
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* *n /= d;
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* return r;
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*/
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int uint64divmod(uint64_t *v, int by);
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#endif /* __CROS_EC_UTIL_H */
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