c-resources/CPlusPlus20ForProgrammers-m.../examples/ch04/fig04_11.cpp

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// fig04_11.cpp
// Using the miniz-cpp header-only library to write and read a ZIP file.
#include <iostream>
#include <string>
#include "zip_file.hpp"
using namespace std;
int main() {
cout << "Enter a ZIP file name: ";
string zipFileName;
getline(cin, zipFileName); // inputs a line of text
// string literals separated only by whitespace are combined
// into a single string by the compiler
string content{
"This chapter introduces all but one of the remaining control "
"statements--the for, do...while, switch, break and continue "
"statements. We explore the essentials of counter-controlled "
"iteration. We use compound-interest calculations to begin "
"investigating the issues of processing monetary amounts. First, "
"we discuss the representational errors associated with "
"floating-point types. We use a switch statement to count the "
"number of A, B, C, D and F grade equivalents in a set of "
"numeric grades. We show C++17's enhancements that allow you to "
"initialize one or more variables of the same type in the "
"headers of if and switch statements."};
cout << "\ncontent.length(): " << content.length();
miniz_cpp::zip_file output; // create zip_file object
// write content into a text file in output
output.writestr("intro.txt", content); // create file in ZIP
output.save(zipFileName); // save output to zipFileName
miniz_cpp::zip_file input{zipFileName}; // load zipFileName
// display input's file name and directory listing
cout << "\n\nZIP file's name: " << input.get_filename()
<< "\n\nZIP file's directory listing:\n";
input.printdir();
// display info about the compressed intro.txt file
miniz_cpp::zip_info info{input.getinfo("intro.txt")};
cout << "\nFile name: " << info.filename
<< "\nOriginal size: " << info.file_size
<< "\nCompressed size: " << info.compress_size;
// original file contents
string extractedContent{input.read(info)};
cout << "\n\nOriginal contents of intro.txt:\n"
<< extractedContent << "\n";
}
/**************************************************************************
* (C) Copyright 1992-2022 by Deitel & Associates, Inc. and *
* Pearson Education, Inc. All Rights Reserved. *
* *
* DISCLAIMER: The authors and publisher of this book have used their *
* best efforts in preparing the book. These efforts include the *
* development, research, and testing of the theories and programs *
* to determine their effectiveness. The authors and publisher make *
* no warranty of any kind, expressed or implied, with regard to these *
* programs or to the documentation contained in these books. The authors *
* and publisher shall not be liable in any event for incidental or *
* consequential damages in connection with, or arising out of, the *
* furnishing, performance, or use of these programs. *
*************************************************************************/