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cb769c62e5
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.
117 lines
2.6 KiB
C++
117 lines
2.6 KiB
C++
#include <qpdf/Pl_Flate.hh>
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#include <qpdf/Pl_StdioFile.hh>
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#include <qpdf/QUtil.hh>
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#include <qpdf/QPDF.hh>
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#include <stdio.h>
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#include <string.h>
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#include <iostream>
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#include <stdlib.h>
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#include <fcntl.h>
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static char const* whoami = 0;
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void usage()
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{
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std::cerr << "Usage: " << whoami << " { -uncompress | -compress[=n] }"
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<< std::endl
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<< "If n is specified with -compress, it is a"
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<< " zlib compression level from" << std::endl
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<< "1 to 9 where lower numbers are faster and"
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<< " less compressed and higher" << std::endl
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<< "numbers are slower and more compressed"
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<< std::endl;
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exit(2);
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}
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int main(int argc, char* argv[])
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{
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if ((whoami = strrchr(argv[0], '/')) == NULL)
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{
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whoami = argv[0];
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}
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else
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{
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++whoami;
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}
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// For libtool's sake....
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if (strncmp(whoami, "lt-", 3) == 0)
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{
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whoami += 3;
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}
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if ((argc == 2) && (strcmp(argv[1], "--version") == 0))
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{
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std::cout << whoami << " from qpdf version "
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<< QPDF::QPDFVersion() << std::endl;
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exit(0);
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}
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if (argc != 2)
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{
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usage();
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}
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Pl_Flate::action_e action = Pl_Flate::a_inflate;
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if ((strcmp(argv[1], "-uncompress") == 0))
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{
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// okay
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}
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else if ((strcmp(argv[1], "-compress") == 0))
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{
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action = Pl_Flate::a_deflate;
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}
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else if ((strncmp(argv[1], "-compress=", 10) == 0))
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{
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action = Pl_Flate::a_deflate;
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int level = QUtil::string_to_int(argv[1] + 10);
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Pl_Flate::setCompressionLevel(level);
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}
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else
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{
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usage();
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}
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QUtil::binary_stdout();
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QUtil::binary_stdin();
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auto out = make_pointer_holder<Pl_StdioFile>("stdout", stdout);
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auto flate = make_pointer_holder<Pl_Flate>("flate", out.get(), action);
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bool warn = false;
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flate->setWarnCallback([&warn](char const* msg, int code) {
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warn = true;
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std::cerr << whoami << ": WARNING: zlib code " << code
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<< ", msg = " << msg << std::endl;
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});
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try
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{
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unsigned char buf[10000];
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bool done = false;
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while (! done)
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{
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size_t len = fread(buf, 1, sizeof(buf), stdin);
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if (len <= 0)
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{
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done = true;
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}
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else
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{
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flate->write(buf, len);
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}
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}
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flate->finish();
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}
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catch (std::exception& e)
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{
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std::cerr << whoami << ": " << e.what() << std::endl;
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exit(2);
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}
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if (warn)
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{
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exit(3);
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}
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return 0;
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}
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