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/**
* @file mime-printheader.cc
* @brief Implementation of main mime parser components
* @author Andreas Aardal Hanssen
* @date 2002-2005
*/
#include "convert.h"
#include "iodevice.h"
#include "iofactory.h"
#include "mime-inputsource.h"
#include "mime-utils.h"
#include "mime.h"
#include <exception>
#include <iostream>
#include <map>
#include <string>
#include <vector>
#include <ctype.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
using std::string;
using std::vector;
void Binc::MimePart::printHeader(int fd,
IODevice &output,
vector<string> headers,
bool includeheaders,
unsigned int startoffset,
unsigned int length,
string &store) const
{
if (!mimeSource || mimeSource->getFileDescriptor() != fd) {
delete mimeSource;
mimeSource = new MimeInputSource(fd);
}
mimeSource->seek(headerstartoffsetcrlf);
string name;
string content;
char cqueue[2];
memset(cqueue, 0, sizeof(cqueue));
bool quit = false;
char c = '\0';
unsigned int wrotebytes = 0;
unsigned int processedbytes = 0;
bool hasHeaderSeparator = false;
while (!quit) {
// read name
while (1) {
// allow EOF to end the header
if (!mimeSource->getChar(&c)) {
quit = true;
break;
}
// assume this character is part of the header name.
name += c;
// break on the first colon
if (c == ':') break;
// break if a '\n' turned up.
if (c == '\n') {
// end of headers detected
if (name == "\r\n") {
hasHeaderSeparator = true;
quit = true;
break;
}
// put all data back in the buffer to the beginning of this
// line.
for (int i = name.length(); i >= 0; --i)
mimeSource->ungetChar();
// abort printing of header. note that in this case, the
// headers will not end with a seperate \r\n.
quit = true;
name = "";
break;
}
}
if (quit) break;
// at this point, we have a name, that is - the start of a
// header. we'll read until the end of the header.
while (!quit) {
// allow EOF to end the header.
if (!mimeSource->getChar(&c)) {
quit = true;
break;
}
if (c == '\n') ++nlines;
// make a fifo queue of the last 4 characters.
cqueue[0] = cqueue[1];
cqueue[1] = c;
// print header
if (cqueue[0] == '\n' && cqueue[1] != '\t' && cqueue[1] != ' ') {
// it wasn't a space, so put it back as it is most likely
// the start of a header name. in any case it terminates the
// content part of this header.
mimeSource->ungetChar();
string lowername = name;
lowercase(lowername);
trim(lowername, ": \t");
bool foundMatch = false;
for (auto nametmp : headers) {
lowercase(nametmp);
if (nametmp == lowername) {
foundMatch = true;
break;
}
}
if (foundMatch == includeheaders || headers.size() == 0) {
string out = name + content;
for (char i : out) {
if (processedbytes >= startoffset && wrotebytes < length) {
if (processedbytes >= startoffset) {
store += i;
++wrotebytes;
}
} else {
++processedbytes;
}
}
}
// move on to the next header
content = "";
name = "";
break;
}
content += c;
}
} // end while loop
if (name != "") {
string lowername = name;
lowercase(lowername);
trim(lowername, ": \t");
bool foundMatch = false;
for (auto nametmp : headers) {
lowercase(nametmp);
if (nametmp == lowername) {
foundMatch = true;
break;
}
}
if (hasHeaderSeparator || foundMatch == includeheaders || headers.size() == 0) {
string out = name + content;
for (char i : out) {
if (processedbytes >= startoffset && wrotebytes < length) {
store += i;
++wrotebytes;
} else {
++processedbytes;
}
}
}
}
}
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