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#include "file.hh" |
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#include "read_compressed.hh" |
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#include <cstring> |
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#include <iostream> |
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namespace { |
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const std::size_t kBufSize = 16384; |
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void Copy(util::ReadCompressed &from, int to) { |
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util::scoped_malloc buffer(util::MallocOrThrow(kBufSize)); |
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while (std::size_t amount = from.Read(buffer.get(), kBufSize)) { |
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util::WriteOrThrow(to, buffer.get(), amount); |
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} |
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} |
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} |
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int main(int argc, char *argv[]) { |
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for (int i = 1; i < argc; ++i) { |
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char *arg = argv[i]; |
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if (!strcmp(arg, "--")) break; |
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if (!strcmp(arg, "-h") || !strcmp(arg, "--help")) { |
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std::cerr << |
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"A cat implementation that interprets compressed files.\n" |
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"Usage: " << argv[0] << " [file1] [file2] ...\n" |
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"If no file is provided, then stdin is read.\n"; |
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return 1; |
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} |
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} |
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try { |
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if (argc == 1) { |
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util::ReadCompressed in(0); |
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Copy(in, 1); |
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} else { |
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for (int i = 1; i < argc; ++i) { |
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util::ReadCompressed in(util::OpenReadOrThrow(argv[i])); |
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Copy(in, 1); |
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} |
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} |
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} catch (const std::exception &e) { |
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std::cerr << e.what() << std::endl; |
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return 2; |
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} |
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return 0; |
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} |
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