/*-
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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 <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include "scpi_utils.h"
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static size_t patternSeparatorShortPos(const char * pattern, size_t len);
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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, "%lg", 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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bool_t locateText(const char * str1, size_t len1, char ** str2, size_t * len2) {
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size_t i;
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int quot = 0;
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int32_t strStart = -1;
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int32_t strStop = -1;
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int valid = 0;
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for (i = 0; i < len1; i++) {
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if ((strStart < 0) && isspace(str1[i])) {
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continue;
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}
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if ((strStart < 0) && !quot && (str1[i] == '"')) {
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quot = 1;
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continue;
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}
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if (strStart < 0) {
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strStart = i;
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}
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if ((strStop < 0) && quot && (str1[i] == '"')) {
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strStop = i;
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valid = 1;
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continue;
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}
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if ((strStop >= 0) && quot && (str1[i] == ',')) {
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break;
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}
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if ((strStop >= 0) && quot && !isspace(str1[i])) {
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valid = 0;
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}
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if (!quot && !isspace(str1[i]) && (str1[i] != ',')) {
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strStop = i;
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}
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if (isspace(str1[i])) {
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continue;
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}
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if ((strStop >= 0) && (str1[i] == ',')) {
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valid = 1;
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break;
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}
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}
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if ((i == len1) && !quot) {
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valid = 1;
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if (strStop < 0) {
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strStop = i;
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} else {
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strStop++;
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}
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if (strStart < 0) {
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strStart = i;
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}
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} else if (!quot) {
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strStop++;
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}
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if (valid) {
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if (str2) {
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*str2 = (char *) &str1[strStart];
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}
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if (len2) {
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*len2 = strStop - strStart;
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}
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}
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return valid;
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}
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bool_t locateStr(const char * str1, size_t len1, char ** str2, size_t * len2) {
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size_t i;
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int32_t strStart = -1;
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int32_t strStop = -1;
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int valid = 0;
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for (i = 0; i < len1; i++) {
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if ((strStart < 0) && isspace(str1[i])) {
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continue;
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}
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if (strStart < 0) {
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strStart = i;
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}
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if (!isspace(str1[i]) && (str1[i] != ',')) {
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strStop = i;
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}
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if (isspace(str1[i])) {
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continue;
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}
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if (str1[i] == ',') {
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valid = 1;
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if (strStop < 0) {
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strStop = i;
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}
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break;
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}
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}
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if (i == len1) {
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valid = 1;
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if (strStop < 0) {
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strStop = i;
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} else {
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strStop++;
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}
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if (strStart < 0) {
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strStart = i;
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}
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} else {
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strStop++;
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}
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if (valid) {
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if (str2) {
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*str2 = (char *) &str1[strStart];
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}
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if (len2) {
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*len2 = strStop - strStart;
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}
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}
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return valid;
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}
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/**
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* Count white spaces from the beggining
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* @param cmd - command
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* @param len - max search length
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* @return number of white spaces
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*/
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size_t skipWhitespace(const char * cmd, size_t len) {
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size_t i;
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for (i = 0; i < len; i++) {
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if (!isspace(cmd[i])) {
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return i;
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}
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}
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return len;
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}
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/**
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* Pattern is composed from upper case an lower case letters. This function
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* search the first lowercase letter
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* @param pattern
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* @param len - max search length
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* @return position of separator or len
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*/
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size_t patternSeparatorShortPos(const char * pattern, size_t len) {
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size_t i;
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for (i = 0; (i < len) && pattern[i]; i++) {
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if (islower(pattern[i])) {
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return i;
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}
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}
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return i;
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}
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/**
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* Match pattern and str. Pattern is in format UPPERCASElowercase
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* @param pattern
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* @param pattern_len
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* @param str
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* @param str_len
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* @return
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*/
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bool_t matchPattern(const char * pattern, size_t pattern_len, const char * str, size_t str_len) {
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int pattern_sep_pos_short = patternSeparatorShortPos(pattern, pattern_len);
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return compareStr(pattern, pattern_len, str, str_len) ||
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compareStr(pattern, pattern_sep_pos_short, str, str_len);
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}
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