30 lines
851 B
C
30 lines
851 B
C
#include <libowfat/fmt.h>
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#include <libowfat/textcode.h>
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#include <libowfat/str.h>
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#include "haveinline.h"
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size_t fmt_quotedprintable2(char* dest,const char* src,size_t len,const char* escapeme) {
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register const unsigned char* s=(const unsigned char*) src;
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size_t written=0,i;
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for (i=0; i<len; ++i) {
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if (s[i]&0x80 || s[i]<' ' || s[i]=='=' || escapeme[str_chr(escapeme,s[i])]==s[i]) {
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if (dest) {
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dest[written]='=';
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dest[written+1]=fmt_tohex(s[i]>>4);
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dest[written+2]=fmt_tohex(s[i]&15);
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}
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written+=3;
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} else {
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if (dest) dest[written]=s[i];
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++written;
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}
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/* in case someone gives us malicious input */
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if (written>((size_t)-1)/2) return (size_t)-1;
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}
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return written;
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}
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size_t fmt_quotedprintable(char* dest,const char* src,size_t len) {
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return fmt_quotedprintable2(dest,src,len,"");
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}
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