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129 lines
5.0 KiB
129 lines
5.0 KiB
/*============================================================================
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CMake - Cross Platform Makefile Generator
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Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
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Distributed under the OSI-approved BSD License (the "License");
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see accompanying file Copyright.txt for details.
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This software is distributed WITHOUT ANY WARRANTY; without even the
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implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the License for more information.
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============================================================================*/
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#ifndef cmListCommand_h
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#define cmListCommand_h
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#include "cmCommand.h"
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/** \class cmListCommand
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* \brief Common list operations
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*
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*/
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class cmListCommand : public cmCommand
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{
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public:
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/**
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* This is a virtual constructor for the command.
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*/
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virtual cmCommand* Clone()
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{
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return new cmListCommand;
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}
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/**
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* This is called when the command is first encountered in
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* the CMakeLists.txt file.
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*/
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virtual bool InitialPass(std::vector<std::string> const& args,
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cmExecutionStatus &status);
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/**
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* This determines if the command is invoked when in script mode.
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*/
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virtual bool IsScriptable() const { return true; }
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/**
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* The name of the command as specified in CMakeList.txt.
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*/
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virtual const char* GetName() const { return "list";}
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/**
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* Succinct documentation.
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*/
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virtual const char* GetTerseDocumentation() const
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{
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return "List operations.";
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}
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/**
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* More documentation.
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*/
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virtual const char* GetFullDocumentation() const
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{
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return
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" list(LENGTH <list> <output variable>)\n"
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" list(GET <list> <element index> [<element index> ...]\n"
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" <output variable>)\n"
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" list(APPEND <list> <element> [<element> ...])\n"
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" list(FIND <list> <value> <output variable>)\n"
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" list(INSERT <list> <element_index> <element> [<element> ...])\n"
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" list(REMOVE_ITEM <list> <value> [<value> ...])\n"
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" list(REMOVE_AT <list> <index> [<index> ...])\n"
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" list(REMOVE_DUPLICATES <list>)\n"
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" list(REVERSE <list>)\n"
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" list(SORT <list>)\n"
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"LENGTH will return a given list's length.\n"
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"GET will return list of elements specified by indices from the list.\n"
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"APPEND will append elements to the list.\n"
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"FIND will return the index of the element specified in the list or -1 "
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"if it wasn't found.\n"
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"INSERT will insert elements to the list to the specified location.\n"
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"REMOVE_AT and REMOVE_ITEM will remove items from the list. The "
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"difference is that REMOVE_ITEM will remove the given items, while "
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"REMOVE_AT will remove the items at the given indices.\n"
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"REMOVE_DUPLICATES will remove duplicated items in the list.\n"
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"REVERSE reverses the contents of the list in-place.\n"
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"SORT sorts the list in-place alphabetically.\n"
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"The list subcommands APPEND, INSERT, REMOVE_AT, REMOVE_ITEM, "
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"REMOVE_DUPLICATES, REVERSE and SORT may create new values for "
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"the list within the current CMake variable scope. Similar to "
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"the SET command, the LIST command creates new variable values "
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"in the current scope, even if the list itself is actually "
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"defined in a parent scope. To propagate the results of these "
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"operations upwards, use SET with PARENT_SCOPE, SET with CACHE "
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"INTERNAL, or some other means of value propagation.\n"
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"NOTES: A list in cmake is a ; separated group of strings. "
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"To create a list the set command can be used. For example, "
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"set(var a b c d e) creates a list with a;b;c;d;e, and "
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"set(var \"a b c d e\") creates a string or a list with one "
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"item in it.\n"
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"When specifying index values, if <element index> is 0 or"
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" greater, it is indexed from the "
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"beginning of the list, with 0 representing the first list element. "
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"If <element index> is -1 or lesser, it is indexed from the end of "
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"the list, with -1 representing the last list element. Be careful "
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"when counting with negative indices: they do not start from 0. "
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"-0 is equivalent to 0, the first list element.\n"
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;
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}
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cmTypeMacro(cmListCommand, cmCommand);
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protected:
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bool HandleLengthCommand(std::vector<std::string> const& args);
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bool HandleGetCommand(std::vector<std::string> const& args);
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bool HandleAppendCommand(std::vector<std::string> const& args);
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bool HandleFindCommand(std::vector<std::string> const& args);
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bool HandleInsertCommand(std::vector<std::string> const& args);
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bool HandleRemoveAtCommand(std::vector<std::string> const& args);
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bool HandleRemoveItemCommand(std::vector<std::string> const& args);
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bool HandleRemoveDuplicatesCommand(std::vector<std::string> const& args);
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bool HandleSortCommand(std::vector<std::string> const& args);
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bool HandleReverseCommand(std::vector<std::string> const& args);
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bool GetList(std::vector<std::string>& list, const char* var);
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bool GetListString(std::string& listString, const char* var);
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};
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#endif
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