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system/readline/readline_common.c: Fix nxstyle issues.

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Ouss4 2020-08-22 02:38:11 +01:00 committed by David Sidrane
parent 9d80399bd5
commit a1b8ad9190
1 changed files with 78 additions and 56 deletions
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134
system/readline/readline_common.c
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@ -1,7 +1,8 @@
/****************************************************************************
* apps/system/readline/readline_common.c
*
* Copyright (C) 2007-2008, 2011-2013, 2015 Gregory Nutt. All rights reserved.
* Copyright (C) 2007-2008, 2011-2013, 2015 Gregory Nutt.
* All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
@ -53,9 +54,33 @@
#include "system/readline.h"
#include "readline.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#ifdef CONFIG_READLINE_CMD_HISTORY
# define RL_CMDHIST_LEN CONFIG_READLINE_CMD_HISTORY_LEN
# define RL_CMDHIST_LINELEN CONFIG_READLINE_CMD_HISTORY_LINELEN
#endif
/****************************************************************************
* Private Types
****************************************************************************/
#ifdef CONFIG_READLINE_CMD_HISTORY
struct cmdhist_s
{
char buf[RL_CMDHIST_LEN][RL_CMDHIST_LINELEN]; /* Circular buffer */
int head; /* Head of the circular buffer */
int offset; /* Offset from head */
int len; /* Size of the circular buffer */
};
#endif /* CONFIG_READLINE_CMD_HISTORY */
/****************************************************************************
* Private Data
****************************************************************************/
/* <esc>[K is the VT100 command erases to the end of the line. */
static const char g_erasetoeol[] = VT100_CLEAREOL;
@ -71,18 +96,7 @@ static FAR const struct extmatch_vtable_s *g_extmatch_vtbl = NULL;
#endif /* CONFIG_READLINE_TABCOMPLETION */
#ifdef CONFIG_READLINE_CMD_HISTORY
/* Nghia Ho: command history
*
* g_cmd_history[][] Circular buffer
* g_cmd_history_head Head of the circular buffer, most recent command
* g_cmd_history_steps_from_head Offset from head
* g_cmd_history_len Number of elements in the circular buffer
*/
static char g_cmd_history[CONFIG_READLINE_CMD_HISTORY_LEN][CONFIG_READLINE_CMD_HISTORY_LINELEN];
static int g_cmd_history_head = -1;
static int g_cmd_history_steps_from_head = 1;
static int g_cmd_history_len = 0;
static struct cmdhist_s g_cmdhist;
#endif /* CONFIG_READLINE_CMD_HISTORY */
/****************************************************************************
@ -105,7 +119,8 @@ static int g_cmd_history_len = 0;
****************************************************************************/
#if defined(CONFIG_READLINE_TABCOMPLETION) && defined(CONFIG_BUILTIN)
static int count_builtin_matches(FAR char *buf, FAR int *matches, int namelen)
static int count_builtin_matches(FAR char *buf, FAR int *matches,
int namelen)
{
#if CONFIG_READLINE_MAX_BUILTINS > 0
FAR const char *name;
@ -138,7 +153,7 @@ static int count_builtin_matches(FAR char *buf, FAR int *matches, int namelen)
* Name: tab_completion
*
* Description:
* Nghia - Unix like tab completion, only for builtin apps
* Unix like tab completion, only for builtin apps
*
* Input Parameters:
* vtbl - vtbl used to access implementation specific interface
@ -190,7 +205,8 @@ static void tab_completion(FAR struct rl_common_s *vtbl, char *buf,
{
/* Count the number of external commands */
nr_ext_matches = g_extmatch_vtbl->count_matches(buf, ext_matches, len);
nr_ext_matches =
g_extmatch_vtbl->count_matches(buf, ext_matches, len);
nr_matches += nr_ext_matches;
}
@ -236,7 +252,9 @@ static void tab_completion(FAR struct rl_common_s *vtbl, char *buf,
RL_PUTC(vtbl, name[j]);
}
/* Don't remove extra characters after the completed word, if any. */
/* Don't remove extra characters after the completed word,
* if any.
*/
if (len < name_len)
{
@ -329,6 +347,7 @@ static void tab_completion(FAR struct rl_common_s *vtbl, char *buf,
RL_PUTC(vtbl, '\n');
}
#endif
strncpy(buf, tmp_name, buflen - 1);
@ -349,7 +368,9 @@ static void tab_completion(FAR struct rl_common_s *vtbl, char *buf,
RL_PUTC(vtbl, buf[i]);
}
/* Don't remove extra characters after the completed word, if any. */
/* Don't remove extra characters after the completed word,
* if any
*/
if (len < name_len)
{
@ -454,7 +475,7 @@ FAR const struct extmatch_vtable_s *
* different creature.
*
* Input Parameters:
* vtbl - vtbl used to access implementation specific interface
* vtbl - vtbl used to access implementation specific interface
* buf - The user allocated buffer to be filled.
* buflen - the size of the buffer.
*
@ -465,7 +486,8 @@ FAR const struct extmatch_vtable_s *
*
****************************************************************************/
ssize_t readline_common(FAR struct rl_common_s *vtbl, FAR char *buf, int buflen)
ssize_t readline_common(FAR struct rl_common_s *vtbl, FAR char *buf,
int buflen)
{
int escape;
int nch;
@ -497,7 +519,7 @@ ssize_t readline_common(FAR struct rl_common_s *vtbl, FAR char *buf, int buflen)
escape = 0;
nch = 0;
for (;;)
for (; ; )
{
/* Get the next character. readline_rawgetc() returns EOF on any
* errors or at the end of file.
@ -536,30 +558,30 @@ ssize_t readline_common(FAR struct rl_common_s *vtbl, FAR char *buf, int buflen)
/* We are finished with the escape sequence */
#ifdef CONFIG_READLINE_CMD_HISTORY
/* Nghia Ho: intercept up and down arrow keys */
/* Intercept up and down arrow keys */
if (g_cmd_history_len > 0)
if (g_cmdhist.len > 0)
{
if (ch == 'A') /* up arrow */
{
/* Go to the past command in history */
g_cmd_history_steps_from_head--;
g_cmdhist.offset--;
if (-g_cmd_history_steps_from_head >= g_cmd_history_len)
if (-g_cmdhist.offset >= g_cmdhist.len)
{
g_cmd_history_steps_from_head = -(g_cmd_history_len - 1);
g_cmdhist.offset = -(g_cmdhist.len - 1);
}
}
else if (ch == 'B') /* down arrow */
{
/* Go to the recent command in history */
g_cmd_history_steps_from_head++;
g_cmdhist.offset++;
if (g_cmd_history_steps_from_head > 1)
if (g_cmdhist.offset > 1)
{
g_cmd_history_steps_from_head = 1;
g_cmdhist.offset = 1;
}
}
@ -575,27 +597,27 @@ ssize_t readline_common(FAR struct rl_common_s *vtbl, FAR char *buf, int buflen)
#endif
}
if (g_cmd_history_steps_from_head != 1)
{
int idx = g_cmd_history_head + g_cmd_history_steps_from_head;
if (g_cmdhist.offset != 1)
{
int idx = g_cmdhist.head + g_cmdhist.offset;
/* Circular buffer wrap around */
/* Circular buffer wrap around */
if (idx < 0)
{
idx = idx + CONFIG_READLINE_CMD_HISTORY_LEN;
}
else if (idx >= CONFIG_READLINE_CMD_HISTORY_LEN)
{
idx = idx - CONFIG_READLINE_CMD_HISTORY_LEN;
}
if (idx < 0)
{
idx = idx + RL_CMDHIST_LEN;
}
else if (idx >= RL_CMDHIST_LEN)
{
idx = idx - RL_CMDHIST_LEN;
}
for (i = 0; g_cmd_history[idx][i] != '\0'; i++)
{
buf[nch++] = g_cmd_history[idx][i];
RL_PUTC(vtbl, g_cmd_history[idx][i]);
}
}
for (i = 0; g_cmdhist.buf[idx][i] != '\0'; i++)
{
buf[nch++] = g_cmdhist.buf[idx][i];
RL_PUTC(vtbl, g_cmdhist.buf[idx][i]);
}
}
}
#endif /* CONFIG_READLINE_CMD_HISTORY */
@ -666,25 +688,25 @@ ssize_t readline_common(FAR struct rl_common_s *vtbl, FAR char *buf, int buflen)
#endif
{
#ifdef CONFIG_READLINE_CMD_HISTORY
/* Nghia Ho: save history of command, only if there was something
/* Save history of command, only if there was something
* typed besides return character.
*/
if (nch >= 1)
{
g_cmd_history_head = (g_cmd_history_head + 1) % CONFIG_READLINE_CMD_HISTORY_LEN;
g_cmdhist.head = (g_cmdhist.head + 1) % RL_CMDHIST_LEN;
for (i = 0; (i < nch) && i < (CONFIG_READLINE_CMD_HISTORY_LINELEN - 1); i++)
for (i = 0; (i < nch) && i < (RL_CMDHIST_LINELEN - 1); i++)
{
g_cmd_history[g_cmd_history_head][i] = buf[i];
g_cmdhist.buf[g_cmdhist.head][i] = buf[i];
}
g_cmd_history[g_cmd_history_head][i] = '\0';
g_cmd_history_steps_from_head = 1;
g_cmdhist.buf[g_cmdhist.head][i] = '\0';
g_cmdhist.offset = 1;
if (g_cmd_history_len < CONFIG_READLINE_CMD_HISTORY_LEN)
if (g_cmdhist.len < RL_CMDHIST_LEN)
{
g_cmd_history_len++;
g_cmdhist.len++;
}
}
#endif /* CONFIG_READLINE_CMD_HISTORY */
@ -728,7 +750,7 @@ ssize_t readline_common(FAR struct rl_common_s *vtbl, FAR char *buf, int buflen)
}
}
#ifdef CONFIG_READLINE_TABCOMPLETION
else if (ch == '\t') /* Nghia - TAB character */
else if (ch == '\t') /* TAB character */
{
tab_completion(vtbl, buf, buflen, &nch);
}