| author | František Kučera <franta-hg@frantovo.cz> |
| Tue, 22 Sep 2020 21:00:30 +0200 | |
| branch | v_0 |
| changeset 43 | 3c8ea5dcf793 |
| parent 39 | src/StdInCommand.h@c3672791b2e8 |
| child 44 | dd7094457e44 |
| permissions | -rw-r--r-- |
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license: GNU GPLv3+
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/** |
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license: GNU GPLv3+
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* Relational pipes |
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* Copyright © 2020 František Kučera (Frantovo.cz, GlobalCode.info) |
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license: GNU GPLv3+
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* |
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license: GNU GPLv3+
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* This program is free software: you can redistribute it and/or modify |
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license: GNU GPLv3+
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, version 3 of the License. |
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* |
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license: GNU GPLv3+
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* This program is distributed in the hope that it will be useful, |
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license: GNU GPLv3+
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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license: GNU GPLv3+
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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license: GNU GPLv3+
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* GNU General Public License for more details. |
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license: GNU GPLv3+
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* |
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* You should have received a copy of the GNU General Public License |
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license: GNU GPLv3+
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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#pragma once |
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#include <codecvt> |
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#include <memory> |
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#include <iostream> |
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#include "Configuration.h" |
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namespace relpipe {
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namespace in {
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namespace cli {
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class CLICommand {
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private: |
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std::wstring_convert<codecvt_utf8<wchar_t>> convertor; // TODO: support also other encodings and use platform encoding as default |
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void processRelation(RelationConfiguration& configuration, std::shared_ptr<writer::RelationalWriter> writer) {
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// Write header / metadata: |
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std::vector<relpipe::writer::AttributeMetadata> attributesMetadata; |
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for (AttributeRecipe ar : configuration.attributes) attributesMetadata.push_back({ar.name, ar.type});
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writer->startRelation(configuration.relation, attributesMetadata, true); |
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// Write records from CLI: |
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for (auto value : configuration.values) writer->writeAttribute(value); |
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// Write records from STDIN: |
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if (configuration.valueStream) {
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std::stringstream rawValue; |
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while (true) {
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char ch = 0; |
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configuration.valueStream->get(ch); |
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if (ch == 0 && configuration.valueStream->good()) {
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writer->writeAttribute(convertor.from_bytes(rawValue.str())); |
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rawValue.str("");
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rawValue.clear(); |
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} else if (configuration.valueStream->good()) {
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rawValue << ch; |
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} else if (configuration.valueStream->eof()) {
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return; |
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} else {
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throw relpipe::cli::RelpipeCLIException(L"Error while reading values from the input stream.", relpipe::cli::CLI::EXIT_CODE_UNEXPECTED_ERROR); // TODO: better exception |
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} |
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} |
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} |
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} |
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public: |
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void process(Configuration& configuration, std::shared_ptr<writer::RelationalWriter> writer) {
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for (RelationConfiguration& relationConfiguration : configuration.relationConfigurations) processRelation(relationConfiguration, writer); |
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} |
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}; |
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} |
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} |
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} |