| // Copyright Vladimir Prus 2002-2004. |
| // Distributed under the Boost Software License, Version 1.0. |
| // (See accompanying file LICENSE_1_0.txt |
| // or copy at http://www.boost.org/LICENSE_1_0.txt) |
| |
| #define BOOST_PROGRAM_OPTIONS_SOURCE |
| #include <boost/program_options/parsers.hpp> |
| #include <cctype> |
| |
| #ifdef _WIN32 |
| namespace boost { namespace program_options { |
| |
| // Take a command line string and splits in into tokens, according |
| // to the rules windows command line processor uses. |
| // |
| // The rules are pretty funny, see |
| // http://article.gmane.org/gmane.comp.lib.boost.user/3005 |
| // http://msdn.microsoft.com/library/en-us/vccelng/htm/progs_12.asp |
| BOOST_PROGRAM_OPTIONS_DECL |
| std::vector<std::string> split_winmain(const std::string& input) |
| { |
| std::vector<std::string> result; |
| |
| std::string::const_iterator i = input.begin(), e = input.end(); |
| for(;i != e; ++i) |
| if (!isspace((unsigned char)*i)) |
| break; |
| |
| if (i != e) { |
| |
| std::string current; |
| bool inside_quoted = false; |
| bool empty_quote = false; |
| int backslash_count = 0; |
| |
| for(; i != e; ++i) { |
| if (*i == '"') { |
| // '"' preceded by even number (n) of backslashes generates |
| // n/2 backslashes and is a quoted block delimiter |
| if (backslash_count % 2 == 0) { |
| current.append(backslash_count / 2, '\\'); |
| empty_quote = inside_quoted && current.empty(); |
| inside_quoted = !inside_quoted; |
| // '"' preceded by odd number (n) of backslashes generates |
| // (n-1)/2 backslashes and is literal quote. |
| } else { |
| current.append(backslash_count / 2, '\\'); |
| current += '"'; |
| } |
| backslash_count = 0; |
| } else if (*i == '\\') { |
| ++backslash_count; |
| } else { |
| // Not quote or backslash. All accumulated backslashes should be |
| // added |
| if (backslash_count) { |
| current.append(backslash_count, '\\'); |
| backslash_count = 0; |
| } |
| if (isspace((unsigned char)*i) && !inside_quoted) { |
| // Space outside quoted section terminate the current argument |
| result.push_back(current); |
| current.resize(0); |
| empty_quote = false; |
| for(;i != e && isspace((unsigned char)*i); ++i) |
| ; |
| --i; |
| } else { |
| current += *i; |
| } |
| } |
| } |
| |
| // If we have trailing backslashes, add them |
| if (backslash_count) |
| current.append(backslash_count, '\\'); |
| |
| // If we have non-empty 'current' or we're still in quoted |
| // section (even if 'current' is empty), add the last token. |
| if (!current.empty() || inside_quoted || empty_quote) |
| result.push_back(current); |
| } |
| return result; |
| } |
| |
| #ifndef BOOST_NO_STD_WSTRING |
| BOOST_PROGRAM_OPTIONS_DECL std::vector<std::wstring> |
| split_winmain(const std::wstring& cmdline) |
| { |
| std::vector<std::wstring> result; |
| std::vector<std::string> aux = split_winmain(to_internal(cmdline)); |
| for (unsigned i = 0, e = aux.size(); i < e; ++i) |
| result.push_back(from_utf8(aux[i])); |
| return result; |
| } |
| #endif |
| |
| }} |
| #endif |
| |