| 1 | // -------------------------------------------------------------------------- |
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| 2 | // |
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| 3 | // File |
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| 4 | // Name: CommandCompletion.cpp |
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| 5 | // Purpose: Parts of BackupQueries that depend on readline |
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| 6 | // Created: 2011/01/21 |
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| 7 | // |
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| 8 | // -------------------------------------------------------------------------- |
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| 9 | |
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| 10 | #include "Box.h" |
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| 11 | |
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| 12 | #ifdef HAVE_LIBREADLINE |
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| 13 | #ifdef HAVE_READLINE_READLINE_H |
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| 14 | #include <readline/readline.h> |
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| 15 | #elif defined(HAVE_EDITLINE_READLINE_H) |
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| 16 | #include <editline/readline.h> |
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| 17 | #elif defined(HAVE_READLINE_H) |
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| 18 | #include <readline.h> |
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| 19 | #endif |
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| 20 | #endif |
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| 21 | |
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| 22 | #ifdef HAVE_READLINE_HISTORY |
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| 23 | #ifdef HAVE_READLINE_HISTORY_H |
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| 24 | #include <readline/history.h> |
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| 25 | #elif defined(HAVE_HISTORY_H) |
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| 26 | #include <history.h> |
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| 27 | #endif |
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| 28 | #endif |
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| 29 | |
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| 30 | #include <cstring> |
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| 31 | |
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| 32 | #include "BackupQueries.h" |
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| 33 | #include "Configuration.h" |
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| 34 | |
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| 35 | #include "autogen_BackupProtocol.h" |
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| 36 | |
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| 37 | #include "MemLeakFindOn.h" |
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| 38 | |
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| 39 | #define COMPARE_RETURN_SAME 1 |
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| 40 | #define COMPARE_RETURN_DIFFERENT 2 |
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| 41 | #define COMPARE_RETURN_ERROR 3 |
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| 42 | #define COMMAND_RETURN_ERROR 4 |
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| 43 | |
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| 44 | #define COMPLETION_FUNCTION(name, code) \ |
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| 45 | std::vector<std::string> Complete ## name( \ |
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| 46 | BackupQueries::ParsedCommand& rCommand, \ |
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| 47 | const std::string& prefix, \ |
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| 48 | BackupProtocolClient& rProtocol, const Configuration& rConfig, \ |
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| 49 | BackupQueries& rQueries) \ |
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| 50 | { \ |
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| 51 | std::vector<std::string> completions; \ |
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| 52 | \ |
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| 53 | try \ |
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| 54 | { \ |
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| 55 | code \ |
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| 56 | } \ |
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| 57 | catch(std::exception &e) \ |
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| 58 | { \ |
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| 59 | BOX_TRACE("Failed to complete " << prefix << ": " << e.what()); \ |
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| 60 | } \ |
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| 61 | catch(...) \ |
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| 62 | { \ |
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| 63 | BOX_TRACE("Failed to complete " << prefix << ": " \ |
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| 64 | "unknown error"); \ |
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| 65 | } \ |
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| 66 | \ |
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| 67 | return completions; \ |
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| 68 | } |
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| 69 | |
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| 70 | #define DELEGATE_COMPLETION(name) \ |
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| 71 | completions = Complete ## name(rCommand, prefix, rProtocol, rConfig, \ |
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| 72 | rQueries); |
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| 73 | |
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| 74 | COMPLETION_FUNCTION(None,) |
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| 75 | |
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| 76 | #ifdef HAVE_RL_FILENAME_COMPLETION_FUNCTION |
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| 77 | #define RL_FILENAME_COMPLETION_FUNCTION rl_filename_completion_function |
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| 78 | #define HAVE_A_FILENAME_COMPLETION_FUNCTION 1 |
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| 79 | #elif defined HAVE_FILENAME_COMPLETION_FUNCTION |
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| 80 | #define RL_FILENAME_COMPLETION_FUNCTION filename_completion_function |
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| 81 | #define HAVE_A_FILENAME_COMPLETION_FUNCTION 1 |
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| 82 | #endif |
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| 83 | |
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| 84 | #ifdef HAVE_A_FILENAME_COMPLETION_FUNCTION |
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| 85 | COMPLETION_FUNCTION(Default, |
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| 86 | while (const char *match = RL_FILENAME_COMPLETION_FUNCTION(prefix.c_str(), 0)) |
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| 87 | { |
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| 88 | completions.push_back(match); |
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| 89 | } |
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| 90 | ) |
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| 91 | #else // !HAVE_A_FILENAME_COMPLETION_FUNCTION |
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| 92 | COMPLETION_FUNCTION(Default,) |
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| 93 | #endif // HAVE_A_FILENAME_COMPLETION_FUNCTION |
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| 94 | |
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| 95 | COMPLETION_FUNCTION(Command, |
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| 96 | int len = prefix.length(); |
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| 97 | |
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| 98 | for(int i = 0; commands[i].name != NULL; i++) |
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| 99 | { |
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| 100 | if(::strncmp(commands[i].name, prefix.c_str(), len) == 0) |
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| 101 | { |
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| 102 | completions.push_back(commands[i].name); |
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| 103 | } |
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| 104 | } |
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| 105 | ) |
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| 106 | |
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| 107 | void CompleteOptionsInternal(const std::string& prefix, |
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| 108 | BackupQueries::ParsedCommand& rCommand, |
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| 109 | std::vector<std::string>& completions) |
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| 110 | { |
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| 111 | std::string availableOptions = rCommand.pSpec->opts; |
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| 112 | |
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| 113 | for(std::string::iterator |
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| 114 | opt = availableOptions.begin(); |
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| 115 | opt != availableOptions.end(); opt++) |
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| 116 | { |
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| 117 | if(rCommand.mOptions.find(*opt) == std::string::npos) |
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| 118 | { |
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| 119 | if(prefix == "") |
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| 120 | { |
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| 121 | // complete with possible option strings |
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| 122 | completions.push_back(std::string("-") + *opt); |
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| 123 | } |
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| 124 | else |
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| 125 | { |
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| 126 | // complete with possible additional options |
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| 127 | completions.push_back(prefix + *opt); |
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| 128 | } |
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| 129 | } |
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| 130 | } |
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| 131 | } |
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| 132 | |
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| 133 | COMPLETION_FUNCTION(Options, |
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| 134 | CompleteOptionsInternal(prefix, rCommand, completions); |
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| 135 | ) |
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| 136 | |
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| 137 | std::string EncodeFileName(const std::string &rUnEncodedName) |
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| 138 | { |
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| 139 | #ifdef WIN32 |
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| 140 | std::string encodedName; |
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| 141 | if(!ConvertConsoleToUtf8(rUnEncodedName, encodedName)) |
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| 142 | { |
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| 143 | return std::string(); |
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| 144 | } |
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| 145 | return encodedName; |
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| 146 | #else |
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| 147 | return rUnEncodedName; |
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| 148 | #endif |
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| 149 | } |
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| 150 | |
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| 151 | int16_t GetExcludeFlags(BackupQueries::ParsedCommand& rCommand) |
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| 152 | { |
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| 153 | int16_t excludeFlags = 0; |
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| 154 | |
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| 155 | if (rCommand.mOptions.find(LIST_OPTION_ALLOWOLD) == std::string::npos) |
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| 156 | { |
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| 157 | excludeFlags |= BackupProtocolListDirectory::Flags_OldVersion; |
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| 158 | } |
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| 159 | |
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| 160 | if (rCommand.mOptions.find(LIST_OPTION_ALLOWDELETED) == std::string::npos) |
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| 161 | { |
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| 162 | excludeFlags |= BackupProtocolListDirectory::Flags_Deleted; |
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| 163 | } |
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| 164 | |
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| 165 | return excludeFlags; |
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| 166 | } |
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| 167 | |
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| 168 | std::vector<std::string> CompleteRemoteFileOrDirectory( |
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| 169 | BackupQueries::ParsedCommand& rCommand, |
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| 170 | const std::string& prefix, BackupProtocolClient& rProtocol, |
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| 171 | BackupQueries& rQueries, int16_t includeFlags) |
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| 172 | { |
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| 173 | std::vector<std::string> completions; |
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| 174 | |
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| 175 | // default to using the current directory |
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| 176 | int64_t listDirId = rQueries.GetCurrentDirectoryID(); |
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| 177 | std::string searchPrefix; |
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| 178 | std::string listDir = prefix; |
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| 179 | |
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| 180 | if(rCommand.mArgCount == rCommand.mCmdElements.size()) |
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| 181 | { |
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| 182 | // completing an empty name, from the current directory |
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| 183 | // nothing to change |
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| 184 | } |
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| 185 | else |
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| 186 | { |
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| 187 | // completing a partially-completed subdirectory name |
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| 188 | searchPrefix = prefix; |
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| 189 | listDir = ""; |
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| 190 | |
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| 191 | // do we need to list a subdirectory to complete? |
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| 192 | size_t lastSlash = searchPrefix.rfind('/'); |
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| 193 | if(lastSlash == std::string::npos) |
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| 194 | { |
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| 195 | // no slashes, so the whole name is the prefix |
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| 196 | // nothing to change |
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| 197 | } |
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| 198 | else |
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| 199 | { |
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| 200 | // listing a partially-completed subdirectory name |
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| 201 | listDir = searchPrefix.substr(0, lastSlash); |
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| 202 | |
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| 203 | listDirId = rQueries.FindDirectoryObjectID(listDir, |
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| 204 | rCommand.mOptions.find(LIST_OPTION_ALLOWOLD) |
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| 205 | != std::string::npos, |
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| 206 | rCommand.mOptions.find(LIST_OPTION_ALLOWDELETED) |
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| 207 | != std::string::npos); |
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| 208 | |
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| 209 | if(listDirId == 0) |
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| 210 | { |
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| 211 | // no matches for subdir to list, |
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| 212 | // return empty-handed. |
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| 213 | return completions; |
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| 214 | } |
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| 215 | |
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| 216 | // matched, and updated listDir and listDirId already |
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| 217 | searchPrefix = searchPrefix.substr(lastSlash + 1); |
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| 218 | } |
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| 219 | } |
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| 220 | |
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| 221 | // Always include directories, because they contain files. |
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| 222 | // We will append a slash later for each directory if we're |
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| 223 | // actually looking for files. |
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| 224 | // |
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| 225 | // If we're looking for directories, then only list directories. |
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| 226 | |
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| 227 | bool completeFiles = includeFlags & |
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| 228 | BackupProtocolListDirectory::Flags_File; |
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| 229 | bool completeDirs = includeFlags & |
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| 230 | BackupProtocolListDirectory::Flags_Dir; |
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| 231 | int16_t listFlags = 0; |
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| 232 | |
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| 233 | if(completeFiles) |
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| 234 | { |
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| 235 | listFlags = BackupProtocolListDirectory::Flags_INCLUDE_EVERYTHING; |
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| 236 | } |
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| 237 | else if(completeDirs) |
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| 238 | { |
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| 239 | listFlags = BackupProtocolListDirectory::Flags_Dir; |
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| 240 | } |
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| 241 | |
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| 242 | rProtocol.QueryListDirectory(listDirId, |
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| 243 | listFlags, GetExcludeFlags(rCommand), |
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| 244 | false /* no attributes */); |
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| 245 | |
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| 246 | // Retrieve the directory from the stream following |
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| 247 | BackupStoreDirectory dir; |
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| 248 | std::auto_ptr<IOStream> dirstream(rProtocol.ReceiveStream()); |
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| 249 | dir.ReadFromStream(*dirstream, rProtocol.GetTimeout()); |
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| 250 | |
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| 251 | // Then... display everything |
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| 252 | BackupStoreDirectory::Iterator i(dir); |
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| 253 | BackupStoreDirectory::Entry *en = 0; |
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| 254 | while((en = i.Next()) != 0) |
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| 255 | { |
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| 256 | BackupStoreFilenameClear clear(en->GetName()); |
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| 257 | std::string name = clear.GetClearFilename().c_str(); |
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| 258 | if(name.compare(0, searchPrefix.length(), searchPrefix) == 0) |
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| 259 | { |
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| 260 | if(en->IsDir() && |
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| 261 | (includeFlags & BackupProtocolListDirectory::Flags_Dir) == 0) |
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| 262 | { |
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| 263 | // Was looking for a file, but this is a |
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| 264 | // directory, so append a slash to the name |
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| 265 | name += "/"; |
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| 266 | } |
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| 267 | |
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| 268 | if(listDir == "") |
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| 269 | { |
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| 270 | completions.push_back(name); |
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| 271 | } |
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| 272 | else |
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| 273 | { |
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| 274 | completions.push_back(listDir + "/" + name); |
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| 275 | } |
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| 276 | } |
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| 277 | } |
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| 278 | |
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| 279 | return completions; |
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| 280 | } |
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| 281 | |
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| 282 | COMPLETION_FUNCTION(RemoteDir, |
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| 283 | completions = CompleteRemoteFileOrDirectory(rCommand, prefix, |
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| 284 | rProtocol, rQueries, |
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| 285 | BackupProtocolListDirectory::Flags_Dir); |
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| 286 | ) |
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| 287 | |
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| 288 | COMPLETION_FUNCTION(RemoteFile, |
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| 289 | completions = CompleteRemoteFileOrDirectory(rCommand, prefix, |
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| 290 | rProtocol, rQueries, |
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| 291 | BackupProtocolListDirectory::Flags_File); |
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| 292 | ) |
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| 293 | |
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| 294 | COMPLETION_FUNCTION(LocalDir, |
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| 295 | DELEGATE_COMPLETION(Default); |
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| 296 | ) |
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| 297 | |
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| 298 | COMPLETION_FUNCTION(LocalFile, |
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| 299 | DELEGATE_COMPLETION(Default); |
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| 300 | ) |
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| 301 | |
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| 302 | COMPLETION_FUNCTION(LocationName, |
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| 303 | const Configuration &locations(rConfig.GetSubConfiguration( |
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| 304 | "BackupLocations")); |
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| 305 | |
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| 306 | std::vector<std::string> locNames = |
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| 307 | locations.GetSubConfigurationNames(); |
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| 308 | |
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| 309 | for(std::vector<std::string>::iterator |
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| 310 | pLocName = locNames.begin(); |
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| 311 | pLocName != locNames.end(); |
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| 312 | pLocName++) |
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| 313 | { |
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| 314 | if(pLocName->compare(0, pLocName->length(), prefix) == 0) |
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| 315 | { |
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| 316 | completions.push_back(*pLocName); |
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| 317 | } |
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| 318 | } |
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| 319 | ) |
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| 320 | |
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| 321 | COMPLETION_FUNCTION(RemoteFileIdInCurrentDir, |
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| 322 | int64_t listDirId = rQueries.GetCurrentDirectoryID(); |
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| 323 | int16_t excludeFlags = GetExcludeFlags(rCommand); |
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| 324 | |
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| 325 | rProtocol.QueryListDirectory( |
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| 326 | listDirId, |
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| 327 | BackupProtocolListDirectory::Flags_File, |
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| 328 | excludeFlags, false /* no attributes */); |
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| 329 | |
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| 330 | // Retrieve the directory from the stream following |
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| 331 | BackupStoreDirectory dir; |
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| 332 | std::auto_ptr<IOStream> dirstream(rProtocol.ReceiveStream()); |
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| 333 | dir.ReadFromStream(*dirstream, rProtocol.GetTimeout()); |
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| 334 | |
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| 335 | // Then... compare each item |
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| 336 | BackupStoreDirectory::Iterator i(dir); |
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| 337 | BackupStoreDirectory::Entry *en = 0; |
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| 338 | while((en = i.Next()) != 0) |
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| 339 | { |
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| 340 | std::ostringstream hexId; |
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| 341 | hexId << std::hex << en->GetObjectID(); |
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| 342 | if(hexId.str().compare(0, prefix.length(), prefix) == 0) |
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| 343 | { |
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| 344 | completions.push_back(hexId.str()); |
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| 345 | } |
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| 346 | } |
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| 347 | ) |
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| 348 | |
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| 349 | // TODO implement completion of hex IDs up to the maximum according to Usage |
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| 350 | COMPLETION_FUNCTION(RemoteId,) |
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| 351 | |
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| 352 | COMPLETION_FUNCTION(GetFileOrId, |
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| 353 | if(rCommand.mOptions.find('i') != std::string::npos) |
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| 354 | { |
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| 355 | DELEGATE_COMPLETION(RemoteFileIdInCurrentDir); |
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| 356 | } |
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| 357 | else |
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| 358 | { |
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| 359 | DELEGATE_COMPLETION(RemoteFile); |
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| 360 | } |
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| 361 | ) |
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| 362 | |
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| 363 | COMPLETION_FUNCTION(CompareLocationOrRemoteDir, |
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| 364 | if(rCommand.mOptions.find('l') != std::string::npos) |
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| 365 | { |
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| 366 | DELEGATE_COMPLETION(LocationName); |
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| 367 | } |
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| 368 | else |
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| 369 | { |
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| 370 | DELEGATE_COMPLETION(RemoteDir); |
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| 371 | } |
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| 372 | ) |
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| 373 | |
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| 374 | COMPLETION_FUNCTION(CompareNoneOrLocalDir, |
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| 375 | if(rCommand.mOptions.find('l') != std::string::npos) |
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| 376 | { |
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| 377 | // no completions |
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| 378 | DELEGATE_COMPLETION(None); |
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| 379 | } |
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| 380 | else |
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| 381 | { |
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| 382 | DELEGATE_COMPLETION(LocalDir); |
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| 383 | } |
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| 384 | ) |
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| 385 | |
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| 386 | COMPLETION_FUNCTION(RestoreRemoteDirOrId, |
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| 387 | if(rCommand.mOptions.find('i') != std::string::npos) |
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| 388 | { |
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| 389 | DELEGATE_COMPLETION(RemoteId); |
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| 390 | } |
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| 391 | else |
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| 392 | { |
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| 393 | DELEGATE_COMPLETION(RemoteDir); |
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| 394 | } |
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| 395 | ) |
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| 396 | |
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| 397 | // Data about commands |
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| 398 | QueryCommandSpecification commands[] = |
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| 399 | { |
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| 400 | { "quit", "", Command_Quit, {} }, |
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| 401 | { "exit", "", Command_Quit, {} }, |
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| 402 | { "list", "rodIFtTash", Command_List, {CompleteRemoteDir} }, |
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| 403 | { "pwd", "", Command_pwd, {} }, |
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| 404 | { "cd", "od", Command_cd, {CompleteRemoteDir} }, |
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| 405 | { "lcd", "", Command_lcd, {CompleteLocalDir} }, |
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| 406 | { "sh", "", Command_sh, {CompleteDefault} }, |
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| 407 | { "getobject", "", Command_GetObject, |
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| 408 | {CompleteRemoteId, CompleteLocalDir} }, |
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| 409 | { "get", "i", Command_Get, |
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| 410 | {CompleteGetFileOrId, CompleteLocalDir} }, |
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| 411 | { "compare", "alcqAEQ", Command_Compare, |
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| 412 | {CompleteCompareLocationOrRemoteDir, CompleteCompareNoneOrLocalDir} }, |
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| 413 | { "restore", "drif", Command_Restore, |
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| 414 | {CompleteRestoreRemoteDirOrId, CompleteLocalDir} }, |
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| 415 | { "help", "", Command_Help, {} }, |
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| 416 | { "usage", "m", Command_Usage, {} }, |
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| 417 | { "undelete", "i", Command_Undelete, |
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| 418 | {CompleteGetFileOrId} }, |
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| 419 | { "delete", "i", Command_Delete, {CompleteGetFileOrId} }, |
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| 420 | { NULL, NULL, Command_Unknown, {} } |
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| 421 | }; |
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| 422 | |
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| 423 | const char *alias[] = {"ls", 0}; |
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| 424 | const int aliasIs[] = {Command_List, 0}; |
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| 425 | |
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| 426 | BackupQueries::ParsedCommand::ParsedCommand(const std::string& Command, |
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| 427 | bool isFromCommandLine) |
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| 428 | : mInOptions(false), |
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| 429 | mFailed(false), |
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| 430 | pSpec(NULL), |
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| 431 | mArgCount(0) |
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| 432 | { |
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| 433 | mCompleteCommand = Command; |
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| 434 | |
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| 435 | // is the command a shell command? |
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| 436 | if(Command[0] == 's' && Command[1] == 'h' && Command[2] == ' ' && Command[3] != '\0') |
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| 437 | { |
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| 438 | // Yes, run shell command |
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| 439 | for(int i = 0; commands[i].type != Command_Unknown; i++) |
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| 440 | { |
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| 441 | if(commands[i].type == Command_sh) |
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| 442 | { |
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| 443 | pSpec = &(commands[i]); |
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| 444 | break; |
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| 445 | } |
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| 446 | } |
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| 447 | |
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| 448 | mCmdElements[0] = "sh"; |
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| 449 | mCmdElements[1] = Command.c_str() + 3; |
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| 450 | return; |
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| 451 | } |
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| 452 | |
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| 453 | // split command into components |
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| 454 | const char *c = Command.c_str(); |
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| 455 | bool inQuoted = false; |
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| 456 | mInOptions = false; |
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| 457 | |
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| 458 | std::string s; |
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| 459 | while(*c != 0) |
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| 460 | { |
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| 461 | // Terminating char? |
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| 462 | if(*c == ((inQuoted)?'"':' ')) |
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| 463 | { |
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| 464 | if(!s.empty()) |
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| 465 | { |
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| 466 | mCmdElements.push_back(s); |
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| 467 | |
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| 468 | // Because we just parsed a space, if this |
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| 469 | // wasn't an option word, then we're now |
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| 470 | // completing the next (or first) arg |
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| 471 | if(!mInOptions) |
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| 472 | { |
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| 473 | mArgCount++; |
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| 474 | } |
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| 475 | } |
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| 476 | |
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| 477 | s.resize(0); |
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| 478 | inQuoted = false; |
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| 479 | mInOptions = false; |
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| 480 | } |
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| 481 | else |
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| 482 | { |
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| 483 | // No. Start of quoted parameter? |
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| 484 | if(s.empty() && *c == '"') |
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| 485 | { |
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| 486 | inQuoted = true; |
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| 487 | } |
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| 488 | // Start of options? |
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| 489 | else if(s.empty() && *c == '-') |
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| 490 | { |
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| 491 | mInOptions = true; |
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| 492 | } |
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| 493 | else |
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| 494 | { |
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| 495 | if(mInOptions) |
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| 496 | { |
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| 497 | // Option char |
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| 498 | mOptions += *c; |
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| 499 | } |
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| 500 | else |
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| 501 | { |
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| 502 | // Normal string char |
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| 503 | s += *c; |
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| 504 | } |
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| 505 | } |
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| 506 | } |
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| 507 | |
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| 508 | ++c; |
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| 509 | } |
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| 510 | |
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| 511 | if(!s.empty()) |
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| 512 | { |
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| 513 | mCmdElements.push_back(s); |
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| 514 | } |
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| 515 | |
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| 516 | // Work out which command it is... |
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| 517 | int cmd = 0; |
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| 518 | while(mCmdElements.size() > 0 && commands[cmd].name != 0 && |
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| 519 | mCmdElements[0] != commands[cmd].name) |
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| 520 | { |
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| 521 | cmd++; |
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| 522 | } |
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| 523 | |
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| 524 | if(mCmdElements.size() > 0 && commands[cmd].name == 0) |
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| 525 | { |
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| 526 | // Check for aliases |
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| 527 | int a; |
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| 528 | for(a = 0; alias[a] != 0; ++a) |
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| 529 | { |
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| 530 | if(mCmdElements[0] == alias[a]) |
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| 531 | { |
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| 532 | // Found an alias |
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| 533 | cmd = aliasIs[a]; |
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| 534 | break; |
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| 535 | } |
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| 536 | } |
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| 537 | } |
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| 538 | |
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| 539 | if(mCmdElements.size() == 0 || commands[cmd].name == 0) |
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| 540 | { |
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| 541 | mFailed = true; |
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| 542 | return; |
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| 543 | } |
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| 544 | |
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| 545 | pSpec = &(commands[cmd]); |
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| 546 | |
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| 547 | #ifdef WIN32 |
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| 548 | if(isFromCommandLine) |
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| 549 | { |
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| 550 | std::string converted; |
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| 551 | |
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| 552 | if(!ConvertEncoding(mCompleteCommand, CP_ACP, converted, |
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| 553 | GetConsoleCP())) |
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| 554 | { |
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| 555 | BOX_ERROR("Failed to convert encoding"); |
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| 556 | mFailed = true; |
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| 557 | } |
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| 558 | |
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| 559 | mCompleteCommand = converted; |
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| 560 | |
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| 561 | for(std::vector<std::string>::iterator |
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| 562 | i = mCmdElements.begin(); |
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| 563 | i != mCmdElements.end(); i++) |
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| 564 | { |
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| 565 | if(!ConvertEncoding(*i, CP_ACP, converted, |
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| 566 | GetConsoleCP())) |
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| 567 | { |
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| 568 | BOX_ERROR("Failed to convert encoding"); |
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| 569 | mFailed = true; |
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| 570 | } |
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| 571 | |
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| 572 | *i = converted; |
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| 573 | } |
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| 574 | } |
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| 575 | #endif |
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| 576 | } |
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| 577 | |
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