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qpdf/examples/qpdf-job.cc
Jay Berkenbilt cb769c62e5 WHITESPACE ONLY -- expand tabs in source code
This comment expands all tabs using an 8-character tab-width. You
should ignore this commit when using git blame or use git blame -w.

In the early days, I used to use tabs where possible for indentation,
since emacs did this automatically. In recent years, I have switched
to only using spaces, which means qpdf source code has been a mixture
of spaces and tabs. I have avoided cleaning this up because of not
wanting gratuitous whitespaces change to cloud the output of git
blame, but I changed my mind after discussing with users who view qpdf
source code in editors/IDEs that have other tab widths by default and
in light of the fact that I am planning to start applying automatic
code formatting soon.
2022-02-08 11:51:15 -05:00

123 lines
2.7 KiB
C++

#include <qpdf/QPDFJob.hh>
#include <qpdf/QUtil.hh>
#include <qpdf/QIntC.hh>
#include <iostream>
#include <cstring>
// This program is a simple demonstration of different ways to use the
// QPDFJob API.
static char const* whoami = 0;
static void usage()
{
std::cerr
<< "Usage: " << whoami << std::endl
<< "This program linearizes the first page of in.pdf to out1.pdf,"
<< " out2.pdf, and"
<< std::endl
<< " out3.pdf, each demonstrating a different way to use the"
<< " QPDFJob API"
<< std::endl;
exit(2);
}
int main(int argc, char* argv[])
{
whoami = QUtil::getWhoami(argv[0]);
// For libtool's sake....
if (strncmp(whoami, "lt-", 3) == 0)
{
whoami += 3;
}
if (argc != 1)
{
usage();
}
// The examples below all catch std::exception. Note that
// QPDFUsage can be caught separately to report on errors in using
// the API itself. For CLI, this is command-line usage. For JSON
// or the API, it would be errors from the equivalent invocation.
// Note that staticId is used for testing only.
try
{
// Use the config API
QPDFJob j;
j.config()
->inputFile("in.pdf")
->outputFile("out1.pdf")
->pages()
->pageSpec(".", "1")
->endPages()
->linearize()
->staticId() // for testing only
->checkConfiguration();
j.run();
std::cout << "out1 status: " << j.getExitCode() << std::endl;
}
catch (std::exception& e)
{
std::cerr << "exception: " << e.what() << std::endl;
return 2;
}
try
{
char const* new_argv[] = {
whoami,
"in.pdf",
"out2.pdf",
"--linearize",
"--pages",
".",
"1",
"--",
"--static-id",
nullptr
};
QPDFJob j;
j.initializeFromArgv(new_argv);
j.run();
std::cout << "out2 status: " << j.getExitCode() << std::endl;
}
catch (std::exception& e)
{
std::cerr << "exception: " << e.what() << std::endl;
return 2;
}
try
{
// Use the JSON API
QPDFJob j;
j.initializeFromJson(R"({
"inputFile": "in.pdf",
"outputFile": "out3.pdf",
"staticId": "",
"linearize": "",
"pages": [
{
"file": ".",
"range": "1"
}
]
}
)");
j.run();
std::cout << "out3 status: " << j.getExitCode() << std::endl;
}
catch (std::exception& e)
{
std::cerr << "exception: " << e.what() << std::endl;
return 2;
}
return 0;
}