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!= lines.end(); ++iter) + { + std::cout << *iter << std::endl; + } +} + int main(int argc, char* argv[]) { try @@ -187,6 +197,8 @@ int main(int argc, char* argv[]) get_whoami_test(); std::cout << "----" << std::endl; same_file_test(); + std::cout << "----" << std::endl; + read_lines_from_file_test(); } catch (std::exception& e) { diff --git a/manual/qpdf-manual.xml b/manual/qpdf-manual.xml index 4fde831a..178174ea 100644 --- a/manual/qpdf-manual.xml +++ b/manual/qpdf-manual.xml @@ -254,6 +254,14 @@ make were going to add pages from another source, as discussed in . + + If appears anywhere in the + command-line, it will be read line by line, and each line will be + treated as a command-line argument. The option + allows arguments to be read from standard input. This allows qpdf + to be invoked with an arbitrary number of arbitrarily long + arguments. + does not have to be seekable, even when generating linearized files. Specifying diff --git a/qpdf/qpdf.cc b/qpdf/qpdf.cc index a1388692..368b9bba 100644 --- a/qpdf/qpdf.cc +++ b/qpdf/qpdf.cc @@ -69,6 +69,10 @@ Usage: qpdf [ options ] { infilename | --empty } [ outfilename ]\n\ \n\ An option summary appears below. Please see the documentation for details.\n\ \n\ +If @filename appears anywhere in the command-line, each line of filename\n\ +will be interpreted as an argument. No interpolation is done. Line\n\ +terminators are stripped. @- can be specified to read from standard input.\n\ +\n\ Note that when contradictory options are provided, whichever options are\n\ provided last take precedence.\n\ \n\ @@ -953,6 +957,28 @@ static void parse_version(std::string const& full_version_string, version = v; } +static void read_args_from_file(char const* filename, + std::vector >& new_argv) +{ + std::list lines; + if (strcmp(filename, "-") == 0) + { + QTC::TC("qpdf", "qpdf read args from stdin"); + lines = QUtil::read_lines_from_file(std::cin); + } + else + { + QTC::TC("qpdf", "qpdf read args from file"); + lines = QUtil::read_lines_from_file(filename); + } + for (std::list::iterator iter = lines.begin(); + iter != lines.end(); ++iter) + { + new_argv.push_back( + PointerHolder(QUtil::copy_string((*iter).c_str()), true)); + } +} + int main(int argc, char* argv[]) { whoami = QUtil::getWhoami(argv[0]); @@ -1060,6 +1086,33 @@ int main(int argc, char* argv[]) char const* infilename = 0; char const* outfilename = 0; + // Support reading arguments from files. Create a new argv. Ensure + // that argv itself as well as all its contents are automatically + // deleted by using PointerHolder objects to back the pointers in + // argv. + std::vector > new_argv; + new_argv.push_back(PointerHolder(QUtil::copy_string(argv[0]), true)); + for (int i = 1; i < argc; ++i) + { + if ((strlen(argv[i]) > 1) && (argv[i][0] == '@')) + { + read_args_from_file(1+argv[i], new_argv); + } + else + { + new_argv.push_back( + PointerHolder(QUtil::copy_string(argv[i]), true)); + } + } + PointerHolder argv_ph(new char*[1+new_argv.size()], true); + argv = argv_ph.getPointer(); + for (size_t i = 0; i < new_argv.size(); ++i) + { + argv[i] = new_argv.at(i).getPointer(); + } + argc = static_cast(new_argv.size()); + argv[argc] = 0; + for (int i = 1; i < argc; ++i) { char const* arg = argv[i]; diff --git a/qpdf/qpdf.testcov b/qpdf/qpdf.testcov index 5f810b03..55e3033a 100644 --- a/qpdf/qpdf.testcov +++ b/qpdf/qpdf.testcov @@ -285,3 +285,5 @@ QPDFObjectHandle non-stream in parsecontent 0 QPDFObjectHandle errors in parsecontent 0 QPDF stream with non-space 0 qpdf same file error 0 +qpdf read args from stdin 0 +qpdf read args from file 0 diff --git a/qpdf/qtest/qpdf.test b/qpdf/qtest/qpdf.test index f0205e1d..807014db 100644 --- a/qpdf/qtest/qpdf.test +++ b/qpdf/qtest/qpdf.test @@ -635,14 +635,20 @@ $td->runtest("dump bad xref", {$td->FILE => "bad-xref-entry.out", $td->EXIT_STATUS => 0}, $td->NORMALIZE_NEWLINES); +# Test @file here too. +open(F, ">args") or die; +print F "--check\n"; +print F "--show-xref\n"; +close(F); $td->runtest("dump corrected bad xref", - {$td->COMMAND => "qpdf --check --show-xref bad-xref-entry.pdf"}, + {$td->COMMAND => "qpdf \@args bad-xref-entry.pdf"}, {$td->FILE => "bad-xref-entry-corrected.out", $td->EXIT_STATUS => 3}, $td->NORMALIZE_NEWLINES); +unlink "args"; $td->runtest("don't overwrite self", - {$td->COMMAND => "qpdf a.pdf a.pdf"}, + {$td->COMMAND => "(echo a.pdf; echo a.pdf) | qpdf \@-"}, {$td->REGEXP => "input file and output file are the same.*", $td->EXIT_STATUS => 2});