/*-
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* Copyright (c) 2012-2013 Jan Breuer,
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*
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* All Rights Reserved
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* @file scpi_utils.c
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* @date Thu Nov 15 10:58:45 UTC 2012
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*
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* @brief Conversion routines and string manipulation routines
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*
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*
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*/
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#include "scpi.h"
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#include "scpi_utils.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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/**
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* Find the first occurrence in str of a character in set.
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* @param str
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* @param size
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* @param set
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* @return
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*/
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char * strnpbrk(const char *str, size_t size, const char *set) {
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const char *scanp;
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long c, sc;
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const char * strend = str + size;
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while ((strend != str) && ((c = *str++) != 0)) {
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for (scanp = set; (sc = *scanp++) != '\0';)
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if (sc == c)
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return ((char *) (str - 1));
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}
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return (NULL);
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}
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/**
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* Converts signed 32b integer value to string
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* @param val integer value
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* @param str converted textual representation
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* @param len string buffer length
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* @return number of bytes written to str (without '\0')
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*/
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size_t longToStr(int32_t val, char * str, size_t len) {
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uint32_t x = 1000000000L;
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int_fast8_t digit;
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size_t pos = 0;
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if (val == 0) {
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if (pos < len) str[pos++] = '0';
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} else {
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if (val < 0) {
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val = -val;
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if (pos < len) str[pos++] = '-';
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}
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while ((val / x) == 0) {
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x /= 10;
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}
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do {
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digit = (uint8_t) (val / x);
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if (pos < len) str[pos++] = digit + '0';
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val -= digit * x;
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x /= 10;
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} while (x && (pos < len));
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}
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if (pos < len) str[pos] = 0;
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return pos;
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}
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/**
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* Converts double value to string
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* @param val double value
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* @param str converted textual representation
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* @param len string buffer length
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* @return number of bytes written to str (without '\0')
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*/
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size_t doubleToStr(double val, char * str, size_t len) {
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return snprintf(str, len, "%lf", val);
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}
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/**
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* Converts string to signed 32bit integer representation
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* @param str string value
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* @param val 32bit integer result
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* @return number of bytes used in string
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*/
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size_t strToLong(const char * str, int32_t * val) {
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char * endptr;
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*val = strtol(str, &endptr, 0);
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return endptr - str;
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}
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/**
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* Converts string to double representation
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* @param str string value
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* @param val double result
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* @return number of bytes used in string
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*/
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size_t strToDouble(const char * str, double * val) {
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char * endptr;
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*val = strtod(str, &endptr);
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return endptr - str;
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}
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/**
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* Compare two strings with exact length
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* @param str1
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* @param len1
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* @param str2
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* @param len2
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* @return TRUE if len1==len2 and "len" characters of both strings are equal
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*/
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bool_t compareStr(const char * str1, size_t len1, const char * str2, size_t len2) {
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if (len1 != len2) {
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return FALSE;
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}
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if (strncasecmp(str1, str2, len2) == 0) {
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return TRUE;
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}
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return FALSE;
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}
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