81 lines
2.4 KiB
C++
81 lines
2.4 KiB
C++
// Copyright Frank Mori Hess 2009.
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//
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// Quick hack to extract code snippets from example programs, so
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// they can be included into boostbook.
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//
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// Use, modification and
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// distribution is subject to the Boost Software License, Version
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// 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#include <fstream>
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#include <iostream>
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#include <sstream>
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#include <stdexcept>
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int main(int argc, const char *argv[])
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{
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if(argc < 3)
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{
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std::cerr << "Too few arguments: need output directory and input file name(s).\n";
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return -1;
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}
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static const std::string output_directory = argv[1];
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static const int num_files = argc - 2;
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int i;
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for(i = 0; i < num_files; ++i)
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{
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const std::string file_name = argv[2 + i];
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std::cout << "opening file: " << file_name << std::endl;
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std::ifstream infile(file_name.c_str());
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bool inside_snippet = false;
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std::ofstream snippet_out_file;
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while(infile.good())
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{
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std::string line;
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getline(infile, line);
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if(infile.bad()) break;
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if(inside_snippet)
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{
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size_t snippet_end_pos = line.find("//]");
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if(snippet_end_pos == std::string::npos)
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{
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snippet_out_file << line << "\n";
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}else
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{
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snippet_out_file << "]]></code>";
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inside_snippet = false;
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std::cout << "done.\n";
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continue;
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}
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}else
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{
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size_t snippet_start_pos = line.find("//[");
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if(snippet_start_pos == std::string::npos)
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{
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continue;
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}else
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{
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inside_snippet = true;
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std::string snippet_name = line.substr(snippet_start_pos + 3);
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std::istringstream snippet_stream(snippet_name);
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snippet_stream >> snippet_name;
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if(snippet_name == "")
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{
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throw std::runtime_error("failed to obtain snippet name");
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}
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snippet_out_file.close();
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snippet_out_file.clear();
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snippet_out_file.open(std::string(output_directory + "/" + snippet_name + ".xml").c_str());
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snippet_out_file << "<!-- Code snippet \"" << snippet_name <<
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"\" extracted from \"" << file_name << "\" by snippet_extractor.\n" <<
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"--><code><![CDATA[";
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std::cout << "processing snippet \"" << snippet_name << "\"... ";
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continue;
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}
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}
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}
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}
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return 0;
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}
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