new hexdump fmt and scan routines for textcode
parent
cde4c19716
commit
58334b0ea2
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#include "fmt.h"
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#include "textcode.h"
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#include "str.h"
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#include "haveinline.h"
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static inline int tohex(char c) {
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return c>9?c-10+'A':c+'0';
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}
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unsigned int fmt_hexdump(char* dest,const char* src,unsigned int len) {
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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; i<len; ++i) {
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dest[written]=tohex(s[i]>>4);
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dest[written+1]=tohex(s[i]&15);
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written+=2;
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}
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return written;
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}
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@ -0,0 +1,27 @@
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#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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