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/****************************************************************************
* tools/cfgdefine.c
*
* Copyright (C) 2007-2013 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Modified by Denis Ciocca <denis.ciocca@st.com>
*
* 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. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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
* COPYRIGHT OWNER OR CONTRIBUTORS 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.
*
****************************************************************************/
#include <stdio.h>
#include <string.h>
#include <sys/cdefs.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "cfgdefine.h"
#include <stdbool.h>
#define CUTOM_MACRO_LIST 6
char line[LINESIZE + 1];
static struct custom_macro {
char name[45];
} custom_macro[] = {
{ .name = "CONFIG_ST_HAL_INEMO_GBIAS_THRESOLD_ACCEL" },
{ .name = "CONFIG_ST_HAL_INEMO_GBIAS_THRESOLD_MAGN" },
{ .name = "CONFIG_ST_HAL_INEMO_GBIAS_THRESOLD_GYRO" },
{ .name = "CONFIG_ST_HAL_ACCEL_ROT_MATRIX" },
{ .name = "CONFIG_ST_HAL_MAGN_ROT_MATRIX" },
{ .name = "CONFIG_ST_HAL_GYRO_ROT_MATRIX" },
};
/* Skip over any spaces */
static char *skip_space(char *ptr)
{
while (*ptr && isspace((int)*ptr)) ptr++;
return ptr;
}
/* Find the end of a variable string */
static char *find_name_end(char *ptr)
{
while (*ptr && (isalnum((int)*ptr) || *ptr == '_')) ptr++;
return ptr;
}
/* Find the end of a value string */
static char *find_value_end(char *ptr)
{
while (*ptr && !isspace((int)*ptr)) {
if (*ptr == '"') {
do ptr++; while (*ptr && *ptr != '"');
if (*ptr) ptr++;
} else
do ptr++; while (*ptr && !isspace((int)*ptr) && *ptr != '"');
}
return ptr;
}
/* Read the next line from the configuration file */
static char *read_line(FILE *stream)
{
char *ptr;
for (;;) {
line[LINESIZE] = '\0';
if (!fgets(line, LINESIZE, stream))
return NULL;
else {
ptr = skip_space(line);
if (*ptr && *ptr != '#' && *ptr != '\n')
return ptr;
else if ((*ptr == '#') && (*(ptr+1) == '\n'))
printf("\n");
}
}
return NULL;
}
static void dequote_custom_values(char *var, char *value)
{
int i, n, ret;
char *t1;
if (!var)
return;
for (i = 0; i < CUTOM_MACRO_LIST; i++) {
ret = strncmp(custom_macro[i].name, var, strlen(custom_macro[i].name));
if (ret == 0) {
for (n = 1; n < strlen(value) - 1; n++)
value[n - 1] = value[n];
value[n - 1] = '\0';
return;
}
}
return;
}
/* Parse the line from the configuration file into a variable name
* string and a value string.
*/
static void parse_line(char *ptr, char **varname, char **varval)
{
/* Skip over any leading spaces */
ptr = skip_space(ptr);
/* The first no-space is the beginning of the variable name */
*varname = skip_space(ptr);
*varval = NULL;
/* Parse to the end of the variable name */
ptr = find_name_end(ptr);
/* An equal sign is expected next, perhaps after some white space */
if (*ptr && *ptr != '=') {
/* Some else follows the variable name. Terminate the variable
* name and skip over any spaces.
*/
*ptr = '\0';
ptr = skip_space(ptr + 1);
}
/* Verify that the equal sign is present */
if (*ptr == '=') {
/* Make sure that the variable name is terminated (this was already
* done if the name was followed by white space.
*/
*ptr = '\0';
/* The variable value should follow =, perhaps separated by some
* white space.
*/
ptr = skip_space(ptr + 1);
if (*ptr) {
/* Yes.. a variable follows. Save the pointer to the start
* of the variable string.
*/
*varval = ptr;
/* Find the end of the variable string and make sure that it
* is terminated.
*/
ptr = find_value_end(ptr);
*ptr = '\0';
}
}
}
void generate_definitions(FILE *stream)
{
char *varname;
char *varval;
char *ptr;
/* Loop until the entire file has been parsed. */
do {
/* Read the next line from the file */
ptr = read_line(stream);
if (ptr) {
/* Parse the line into a variable and a value field */
parse_line(ptr, &varname, &varval);
dequote_custom_values(varname, varval);
/* Was a variable name found? */
if (varname) {
/* If no value was provided or if the special value 'n' was provided,
* then undefine the configuration variable.
*/
if (!varval || strcmp(varval, "n") == 0)
printf("#undef %s\n", varname);
else if (strcmp(varval, "y") == 0)
printf("#define %s 1\n", varname);
else
printf("#define %s %s\n", varname, varval);
}
}
} while (ptr);
}
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