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28 lines
627 B
C
28 lines
627 B
C
#include "fmt.h"
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#include "textcode.h"
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#include "haveinline.h"
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static inline int fromhex(char c) {
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if (c>='0' && c<='9') return c-'0';
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if (c>='A' && c<='F') return c-'A'+10;
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if (c>='a' && c<='f') return c-'a'+10;
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return -1;
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}
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unsigned int scan_hexdump(const char *src,char *dest,unsigned int *destlen) {
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register const unsigned char* s=(const unsigned char*) src;
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unsigned long written=0,i;
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for (i=0; s[i]; ++i) {
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int j=fromhex(s[i]);
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if (j<0) break;
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dest[written]=j<<4;
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j=fromhex(s[i+1]);
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if (j<0) break;
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dest[written]|=j;
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i+=2;
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++written;
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}
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*destlen=written;
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return i;
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}
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