/**
* \file cli.c
*
* This file implements command line interface (CLI) framework.
*/
/*
* Copyright (C) 2017. Mindtree Ltd.
* All rights reserved.
*/
/* --------------------------------------------- Header File Inclusion */
#include "cliface.h"
//#ifdef HAVE_CLI
/* --------------------------------------------- Global Definitions */
/* --------------------------------------------- Function */
/**
* \fn CLI_init
*
* \brief Initialize CLI
*
* \Description
* This routine intializes CLI.
*
* \return EM_SUCCESS or an error code indicating reason for failure
*
*/
uint16_t CLI_init
(
void
)
{
return 0;
}
/**
* \brief Process a command line instruction
*
* \Description
* This routine processes a command line instruction.
*
* \param [in] buffer Buffer containing a command
* \param [in] buffer_len Length of command in buffer
* \param [in] cmd_list Command List
* \param [in] cmd_count Number of command in the list
*
* \return EM_SUCCESS or an error code indicating reason for failure
*/
uint16_t CLI_process_line
(
/* IN */ uint8_t * buffer,
/* IN */ uint32_t buffer_len,
/* IN */ CLI_COMMAND * cmd_list,
/* IN */ uint32_t cmd_count
)
{
uint32_t argc;
uint8_t * argv[CLI_MAX_ARGS];
uint8_t * cmd;
uint32_t index;
/* TBD: Parameter Validation */
CLI_NULL_CHECK(buffer);
/* Skip initial white spaces */
for (; CLI_IS_WHITE_SPACE(*buffer) && (0 != buffer_len); buffer++, buffer_len--);
/* Check this is not an empty command line */
if (0 == buffer_len)
{
CLI_ERR(
"[CLI] Empty command line\n");
return 0xffff;
}
/**
* Got the initial command.
* Parse the remaining command line to get the arguments.
*/
argc = 0;
for (cmd = buffer + 1; cmd < (buffer + buffer_len); cmd++)
{
/**
* If command argument separator is detected, replace with '\0'
* to create each as separate strings.
*/
if (CLI_IS_CMD_SEPARATOR(*cmd))
{
#ifdef AT_CMD
if(('\r' == *cmd) && ('\n' == *(cmd+1))) // support '\r\n' for some uart tools in windows.
{
*cmd = '\0';
//cmd++;
break;
}
if(' ' == *cmd)
{
*cmd = '\0';
break;
}
#endif //end AT_CMD
*cmd = '\0';
}
/* Check if this is start of a new argument */
else if ('\0' == (*(cmd - 1)))
{
argv[argc++] = cmd;
}
else
{
/* Nothing to do */
}
}
CLI_TRC(
"[CLI] Command %s, Number of arguments %d\n", buffer, argc);
{
uint8_t ai;
for (ai = 0; ai < argc; ai++)
{
CLI_TRC(
"Arg [%02X] %s\n", ai, argv[ai]);
}
}
/* Identified command name */
cmd = buffer;
/* Search command and call associated callback */
for (index = 0; index < cmd_count; index++)
{
if (0 == CLI_STR_COMPARE(buffer, cmd_list[index].cmd))
{
cmd_list[index].cmd_hdlr(argc, argv);
break;
}
}
return 0;
}
/* TODO: Create a separe utility module or move to a common utility module */
/* Supporting Macros */
#define IS_SPACE(c) ((' ' == (c)) || ('\t' == (c)))
#define IS_DIGIT(c) (('0' <= (c)) && ('9' >= (c)))
#define IS_UPPER(c) (('A' <= (c)) && ('F' >= (c)))
#define IS_LOWER(c) (('a' <= (c)) && ('f' >= (c)))
#define IS_ALPHA(c) IS_LOWER(c) || IS_UPPER(c)
/* Convert string to Integer */
int32_t CLI_strtoi
(
/* IN */ uint8_t *data,
/* IN */ uint16_t data_length,
/* IN */ uint8_t base
)
{
int32_t value;
uint16_t index;
int8_t sign_adj;
uint8_t c;
c = 0;
/* Skip Whitespaces */
for (index = 0; index < data_length; index++)
{
c = data[index];
if (IS_SPACE(c))
{
continue;
}
else
{
break;
}
}
value = 0;
sign_adj = 1;
/* Check Sign */
if ('-' == c)
{
sign_adj = (int8_t)-1;
index++;
}
/* Not handling spaces after '-' or '0x' etc. */
for (; index < data_length; index++)
{
c = data[index];
/* Check if Digit */
if (IS_DIGIT(c))
{
value *= base;
value += (c - '0');
}
else if (IS_LOWER(c))
{
value *= base;
value += (c - 'a' + 10);
}
else if (IS_UPPER(c))
{
value *= base;
value += (c - 'A' + 10);
}
else
{
break;
}
}
return (sign_adj * value);
}
/* Convert string to Integer Array */
uint16_t CLI_strtoarray
(
/* IN */ uint8_t * data,
/* IN */ uint16_t data_length,
/* OUT */ uint8_t * output_array,
/* IN */ uint16_t output_array_len
)
{
int32_t index;
uint8_t c0, c1;
uint8_t base;
uint16_t output_index;
/* HEX */
base = 16;
c0 = 0;
c1 = 0;
/* Fill with Zeros */
memset(output_array, 0, output_array_len);
/* Check the length */
if (data_length > (2 * output_array_len))
{
return 0xFFFF;
}
/* Process from end */
output_index = output_array_len - 1;
for (index = data_length - 1; index >= 0; index -= 2)
{
if (0 != index)
{
c1 = data[index];
c0 = data[index - 1];
}
else
{
c1 = data[index];
c0 = '0';
}
/* Check if Digit */
if (IS_DIGIT(c0))
{
c0 = (c0 - '0');
}
else if (IS_LOWER(c0))
{
c0 = (c0 - 'a' + 10);
}
else if (IS_UPPER(c0))
{
c0 = (c0 - 'A' + 10);
}
else
{
return 0xFFFF;
}
/* Check if Digit */
if (IS_DIGIT(c1))
{
c1 = (c1 - '0');
}
else if (IS_LOWER(c1))
{
c1 = (c1 - 'a' + 10);
}
else if (IS_UPPER(c1))
{
c1 = (c1 - 'A' + 10);
}
else
{
return 0xFFFF;
}
output_array[output_index] = c0 * base + c1;
output_index--;
}
return 0;
}
/* Convert string to Integer Array in Little Endian Packing */
uint16_t CLI_strtoarray_le
(
/* IN */ uint8_t * data,
/* IN */ uint16_t data_length,
/* OUT */ uint8_t * output_array,
/* IN */ uint16_t output_array_len
)
{
int32_t index;
uint8_t c0, c1;
uint8_t base;
uint16_t output_index;
/* HEX */
base = 16;
c0 = 0;
c1 = 0;
/* Fill with Zeros */
memset(output_array, 0, output_array_len);
/* Check the length */
if (data_length > (2 * output_array_len))
{
return 0xFFFF;
}
/* Process from end */
output_index = 0;
for (index = data_length - 1; index >= 0; index -= 2)
{
if (0 != index)
{
c1 = data[index];
c0 = data[index - 1];
}
else
{
c1 = data[index];
c0 = '0';
}
/* Check if Digit */
if (IS_DIGIT(c0))
{
c0 = (c0 - '0');
}
else if (IS_LOWER(c0))
{
c0 = (c0 - 'a' + 10);
}
else if (IS_UPPER(c0))
{
c0 = (c0 - 'A' + 10);
}
else
{
return 0xFFFF;
}
/* Check if Digit */
if (IS_DIGIT(c1))
{
c1 = (c1 - '0');
}
else if (IS_LOWER(c1))
{
c1 = (c1 - 'a' + 10);
}
else if (IS_UPPER(c1))
{
c1 = (c1 - 'A' + 10);
}
else
{
return 0xFFFF;
}
output_array[output_index] = c0 * base + c1;
output_index++;
}
return 0;
}
//#endif /* HAVE_CLI */