98 lines
1.9 KiB
C++
98 lines
1.9 KiB
C++
#ifndef NULLSOFT_AUTOHEADERH
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#define NULLSOFT_AUTOHEADERH
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#include <windows.h>
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#include "AutoChar.h"
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/* encodes a UTF-8 string into a buffer, returns a pointer to the end of the string */
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inline char *AutoHeader_Encode(const char *in, char *out, size_t len)
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{
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if (!len)
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return 0;
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char *dest=out;
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const unsigned char *src = (const unsigned char *)in;
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while (*src && --len)
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{
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if ((*src >= 'A' && *src <= 'Z') ||
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(*src >= 'a' && *src <= 'z') ||
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(*src >= '0' && *src <= '9') || *src == '.' || *src == '-' || *src == '~')
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{
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*dest++=*src++;
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}
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else if (len > 2)
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{
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int i = *src++;
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*dest++ = '=';
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int b = (i >> 4) & 15;
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if (b < 10) *dest++ = '0' + b;
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else *dest++ = 'A' + b - 10;
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b = i & 15;
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if (b < 10) *dest++ = '0' + b;
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else *dest++ = 'A' + b - 10;
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}
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else
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break;
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}
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*dest=0;
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return dest;
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}
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inline char *AutoHeaderDup(const wchar_t *convert)
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{
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if (!convert)
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return 0;
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BOOL failed=FALSE;
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int n = WideCharToMultiByte(28591, WC_NO_BEST_FIT_CHARS, convert, -1, 0, 0, 0, &failed);
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if (n && !failed)
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{
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char *url = (char *)malloc(n + 1);
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WideCharToMultiByte(28591, WC_NO_BEST_FIT_CHARS, convert, -1, url, n+1, 0, 0);
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return url;
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}
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AutoChar utf8(convert, CP_UTF8);
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size_t size = strlen(utf8)*3+1; // one byte might get encoded to 3 bytes, so we'll malloc for worst-case
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char *url= (char *)malloc((9 /*?utf-8?q?*/+ size + 2 /*?=*/)*sizeof(char));
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memcpy(url, "?utf-8?q?", 9);
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char *end = AutoHeader_Encode(utf8, url+9, size);
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strcpy(end, "?=");
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return url;
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}
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class AutoHeader
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{
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public:
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AutoHeader(const wchar_t *convert) : narrow(0)
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{
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narrow = AutoHeaderDup(convert);
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}
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AutoHeader(const AutoHeader &convert) : narrow(0)
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{
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if (convert.narrow)
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narrow = _strdup(convert.narrow);
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}
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~AutoHeader()
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{
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free(narrow);
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narrow=0;
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}
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operator const char *()
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{
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return narrow;
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}
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operator char *()
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{
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return narrow;
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}
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private:
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char *narrow;
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};
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#endif |