68 lines
995 B
C
68 lines
995 B
C
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "bstr.h"
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/**
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* Create a bstr1616_t string from a string read from config file.
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*
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* @param s String from config file.
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* @return The create bstr16_t string.
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*
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* The string from config file is an ASCII-text which is interpreted
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* as hexadecimal string if it starts with ".x"
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*
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* @see bstr16_t
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*/
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uint8_t * bstr16cfgstr(const char * s)
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{
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int l = strlen(s);
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if (s[0]!='.')
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return bstr16_create((uint8_t*)s,l);
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if (l<=2)
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return bstr16_create((uint8_t*)s,l);
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if (s[1]=='.')
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return bstr16_create((uint8_t*)s+1,l-1);
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if (s[1]=='x'){
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uint8_t * ns=0;
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int len=0;
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int ch,cl;
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const char *ss = s+2;
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int rc ;
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do {
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rc = sscanf(ss,"%01X",&ch);
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if (rc!=1)
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break;
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ss++;
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rc = sscanf(ss,"%01X",&cl);
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if (rc!=1)
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cl=0;
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ss++;
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int c=(ch<<4) | cl;
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len++;
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ns = realloc(ns,len);
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ns[len-1]=c;
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}while (rc==1);
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return bstr16_create(ns,len);
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}
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return NULL;
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}
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