16 lines
424 B
C
16 lines
424 B
C
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#include "fmt.h"
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#include "rangecheck.h"
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#include <string.h>
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size_t fmt_netstring(char* dest,const char* src,size_t len) {
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size_t n=fmt_ulong(NULL,len);
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size_t m;
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if (!range_validbuf(src,len) || add_of(m,len,n+2)) return 0; /* n came from fmt_ulong, so it is a very small number, below 50 */
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if (!dest) return m;
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fmt_ulong(dest,len); dest+=n;
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*dest++=':';
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memcpy(dest,src,len);
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dest[len]=',';
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return m;
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}
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