Es++ Class: Base64FileDecoder
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Source code
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*
* Copyright (c) 2014 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED.
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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*
* Base64FileDecoder.h
*
*****************************************************************************/
#include <es++/Bytes.h>
#include <es++/Base64Decoder.h>
#include <es++/File.h>
#include <es++/Folder.h>
namespace Es {
class Base64FileDecoder: public Base64Decoder {
public:
/**
* Constructor.
*/
Base64FileDecoder()
{
}
public:
/**
* Write Base64 decoded string to an output file.
*/
virtual bool write(unsigned char* enc, const int len, FILE* out)
{
bool rc = false;
int rx = fwrite(enc, 1, len, out);
if (rx == len) {
rc = true;
}
return rc;
}
public:
/**
* Base64-encoding for the file specified by the first argument,
* and write the encoded string to the file specified by the second argument.
* If the output file already exists, then the contents of the file will be
* replaced by new encoded string.
*/
bool decode(const char* filePath, const char* decodeFile) {
bool rc = false;
File file(filePath);
if (file.exists() !=0) {
printf("File not found: %s\n", filePath);
return rc;
}
FILE* in = fopen(filePath, "r");
if (in) {
//printf("Opened %s\n", filePath);
Folder folder(decodeFile);
if (folder.exists() == false) {
if (folder.create() == false) {
fclose(in);
printf("Failed to create a folder for %s\n", decodeFile);
return rc;
}
}
FILE* out = fopen(decodeFile, "wb");
if (out) {
try {
char data[80];
while (fgets(data,sizeof(data), in)) {
unsigned char* dec = NULL;
//unsigned int dlen = 0;
int dlen = 0;
int r = Base64Decoder::decode(data, strlen(data), &dec, &dlen);
if (r>0) {
rc = write(dec, dlen, out);
}
delete [] dec;
}
} catch (...) {
}
fclose(out);
} else {
printf("Faild to open an output file %s\n", decodeFile);
}
fclose(in);
}
return rc;
}
};
}
Last modified: 27 July 2017
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