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70d1adfe4b
* save format string for NetException * format exceptions * format exceptions 2 * format exceptions 3 * format exceptions 4 * format exceptions 5 * format exceptions 6 * fix * format exceptions 7 * format exceptions 8 * Update MergeTreeIndexGin.cpp * Update AggregateFunctionMap.cpp * Update AggregateFunctionMap.cpp * fix
81 lines
2.4 KiB
C++
81 lines
2.4 KiB
C++
#include "ICommand.h"
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#include <Interpreters/Context.h>
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#include <IO/ReadBufferFromFile.h>
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#include <IO/WriteBufferFromFile.h>
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#include <IO/copyData.h>
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#include <Common/TerminalSize.h>
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namespace DB
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{
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namespace ErrorCodes
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{
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extern const int BAD_ARGUMENTS;
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}
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class CommandRead final : public ICommand
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{
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public:
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CommandRead()
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{
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command_name = "read";
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command_option_description.emplace(createOptionsDescription("Allowed options", getTerminalWidth()));
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description = "read File `from_path` to `to_path` or to stdout\nPath should be in format './' or './path' or 'path'";
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usage = "read [OPTION]... <FROM_PATH> <TO_PATH>\nor\nread [OPTION]... <FROM_PATH>";
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command_option_description->add_options()
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("output", po::value<String>(), "set path to file to which we are read")
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;
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}
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void processOptions(
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Poco::Util::LayeredConfiguration & config,
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po::variables_map & options) const override
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{
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if (options.count("output"))
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config.setString("output", options["output"].as<String>());
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}
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void execute(
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const std::vector<String> & command_arguments,
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DB::ContextMutablePtr & global_context,
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Poco::Util::LayeredConfiguration & config) override
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{
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if (command_arguments.size() != 1)
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{
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printHelpMessage();
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throw DB::Exception(DB::ErrorCodes::BAD_ARGUMENTS, "Bad Arguments");
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}
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String disk_name = config.getString("disk", "default");
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DiskPtr disk = global_context->getDisk(disk_name);
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String relative_path = validatePathAndGetAsRelative(command_arguments[0]);
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String path_output = config.getString("output", "");
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if (!path_output.empty())
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{
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String relative_path_output = validatePathAndGetAsRelative(path_output);
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auto in = disk->readFile(relative_path);
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auto out = disk->writeFile(relative_path_output);
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copyData(*in, *out);
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out->finalize();
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return;
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}
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else
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{
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auto in = disk->readFile(relative_path);
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std::unique_ptr<WriteBufferFromFileBase> out = std::make_unique<WriteBufferFromFileDescriptor>(STDOUT_FILENO);
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copyData(*in, *out);
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}
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}
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};
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}
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std::unique_ptr <DB::ICommand> makeCommandRead()
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{
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return std::make_unique<DB::CommandRead>();
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}
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