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95 lines
3.4 KiB
95 lines
3.4 KiB
5 months ago
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/* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* patch_file <input-file> <output-file> <patch-file#1> ....
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*
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* Sections in input file are replaced by content of patch-files.
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*
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* Each section are delimited by the first and last line of corresponding
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* patch file.
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*
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* Sections must occure in same order in input file as patch files are
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* given on command line.
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*
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* Command succeeds if each patch file are used once.
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*
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* Note, currently it is assumed that files uses only LF for new line.
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*
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* When reading files native new line are accepted but LF is used on output.
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*/
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#include <fstream>
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#include <iostream>
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#include <string>
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int main(int argc, char *argv[]) {
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const std::string input_file(argv[1]);
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std::ifstream input(input_file.c_str());
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const std::string output_file(argv[2]);
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std::ofstream output(output_file.c_str(), std::ofstream::binary);
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for (int argi = 3; argi < argc; argi++) {
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const std::string patch_file(argv[argi]);
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std::ifstream patch(patch_file.c_str());
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std::string delim;
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// First line in patch file is delimiter line
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if (!std::getline(patch, delim))
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return 1; // Missing initial delimiter line in patch file
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// Copy all lines before delimiter line from input file
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for (std::string line; std::getline(input, line) && line != delim;) {
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output << line << std::endl;
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}
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if (!input.good())
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return 2; // Bad read from input file or delimiter line not found
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// Copy all lines from patch file
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output << delim << std::endl;
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delim.clear();
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for (std::string line; std::getline(patch, line);) {
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output << line << std::endl;
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// Remember last line as terminating delimiter
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delim = line;
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}
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if (!patch.eof()) return 3; // Bad read from patch file
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if (delim.empty()) return 4; // No or empty terminating delimiter line
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// Skip all lines in input file up to the terminating delimiter line
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for (std::string line; std::getline(input, line) && line != delim;) {
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;
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}
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if (!input.good()) return 5; // Terminating delimiter not found
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}
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// Copy all lines from input file to the end
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for (std::string line; std::getline(input, line);) {
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output << line << std::endl;
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}
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if (!input.eof()) return 6; // Bad read from input file
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input.close();
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output.close();
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return 0;
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}
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