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Tarstats-pp-1 Prototyping: Parse all items of a tarball
- no loop yet. jumped to second item and parsed it's header.
This commit is contained in:
50
main.cpp
50
main.cpp
@@ -23,11 +23,11 @@ int main(int argc, char** argv) {
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std::cout << "Error opening file" << std::endl;
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// Tar spec is working with continous 512 byte size blocks. Header is 512 bytes.
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int headersize = 512;
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int buffersize = 512;
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//Read header of first item in tar archive
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char* headbuffer = new char[headersize];
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datei.read(headbuffer, headersize);
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char* headbuffer = new char[buffersize];
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datei.read(headbuffer, buffersize);
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// Read name of the next item
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std::string itemname(&headbuffer[0], 100);
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@@ -66,10 +66,54 @@ int main(int argc, char** argv) {
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power--;
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}
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// uint64_t locationtonextfile{};
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/* find out how often 512 bytes have to be read until the next header begins. Itemcontents are filled with '0' to
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* fill the next 512 byte block
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*/
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int filereadcount = (itemsize / buffersize) + 1;
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char* itembuffer = new char[buffersize];
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while (filereadcount >= 0){
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datei.read(itembuffer, buffersize);
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filereadcount--;
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}
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delete[] itembuffer;
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delete[] headbuffer;
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headbuffer = new char[buffersize];
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datei.read(headbuffer, buffersize);
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std::string itemname2 (&headbuffer[0], 100);
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std::erase(itemname2, '\0');
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std::string itemtype2{};
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switch (headbuffer[156]){
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case '0': case '\0':
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itemtype2 = "FILE";
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break;
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case '1':
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itemtype2 = "HARDLINK";
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break;
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case '2':
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itemtype2 = "SYMLINK";
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break;
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case '5':
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itemtype2 = "DIRECTORY";
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break;
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default:
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itemtype2 = "OTHER";
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break;
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}
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//Printing to stdout
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std::cout << itemname << std::endl;
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std::cout << itemtype << std::endl;
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std::cout << itemsize << " Bytes" << std::endl;
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std::cout << itemname2 << std::endl;
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std::cout << itemtype2 << std::endl;
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return 0;
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}
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