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File: [Pegasus] / pegasus / src / utils / mu / SortCmd.cpp
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Revision: 1.3, Tue Apr 19 18:19:20 2005 UTC (19 years, 2 months ago) by david.dillard Branch: MAIN CVS Tags: STABLE, RELEASE_2_5_0-RC1, RELEASE_2_5_0, PEP244_ServerProfile-root, PEP244_ServerProfile-branch, PEP233_EmbeddedInstSupport-root, PEGASUS_2_5_0_PerformanceDev-string-end, PEGASUS_2_5_0_PerformanceDev-rootlt, PEGASUS_2_5_0_PerformanceDev-root, PEGASUS_2_5_0_PerformanceDev-r2, PEGASUS_2_5_0_PerformanceDev-r1, PEGASUS_2_5_0_PerformanceDev-lit-end, PEGASUS_2_5_0_PerformanceDev-buffer-end, PEGASUS_2_5_0_PerformanceDev-branch, PEGASUS_2_5_0_PerformanceDev-AtomicInt-branch, PEG25_IBM_5_16_05, NPEGASUS_2_5_0_PerformanceDev-String-root, NNPEGASUS_2_5_0_PerformanceDev-String-branch, BUG_4225_PERFORMANCE_VERSION_1_DONE Branch point for: PEP233_EmbeddedInstSupport-branch Changes since 1.2: +9 -7 lines BUG#: 3362 TITLE: Fixed bug where calling qsort() would cause a crash when the vector was empty. DESCRIPTION: The specific problem had to do with referencing lines[0] when there was no lines[0]. |
//%2005//////////////////////////////////////////////////////////////////////// // // Copyright (c) 2000, 2001, 2002 BMC Software; Hewlett-Packard Development // Company, L.P.; IBM Corp.; The Open Group; Tivoli Systems. // Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L.P.; // IBM Corp.; EMC Corporation, The Open Group. // Copyright (c) 2004 BMC Software; Hewlett-Packard Development Company, L.P.; // IBM Corp.; EMC Corporation; VERITAS Software Corporation; The Open Group. // Copyright (c) 2005 Hewlett-Packard Development Company, L.P.; IBM Corp.; // EMC Corporation; VERITAS Software Corporation; The Open Group. // // Permission is hereby granted, free of charge, to any person obtaining a copy // of this software and associated documentation files (the "Software"), to // deal in the Software without restriction, including without limitation the // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or // sell copies of the Software, and to permit persons to whom the Software is // furnished to do so, subject to the following conditions: // // THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN // ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED // "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT // LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR // PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT // HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN // ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. // //============================================================================== // // Author: Michael E. Brasher, Jim Wunderlich // //%============================================================================= #include <iostream> #include <vector> #include <string> #include <fstream> #include "SortCmd.h" #ifdef OS_WINDOWS # include<io.h> # include<fcntl.h> #endif static int _compare(const void* px, const void* qx) { return ((string*)px)->compare(*((string*)qx)); } // ************************************************************************** // * // * Sort command // * // * Usage: // * // * mu sort unsorted_file > sorted_file // * // * where: // * unsorted_file is the input file to be sorted // * sorted_file is the sorted output file // * // * file is sorted in ascending order // * // ************************************************************************** int SortCmd(const vector<string>& args) { // // Check arguments: // if (args.size() != 2) { cerr << args[0] << ": wrong number of arguments" << endl; return 1; } // // Read file into memory. // string path = args[1]; #ifdef OS_WINDOWS ifstream is(path.c_str(), ios::binary); #else ifstream is(path.c_str()); #endif vector<string> lines; string line; while (getline(is, line)) lines.push_back(line); is.close(); // // Sort if necessary. // if ( lines.size() > 1 ) { qsort(&lines[0], lines.size(), sizeof(string), _compare); } // // Write the results out to standard output: // #ifdef OS_WINDOWS setmode(1, O_BINARY); #endif for (size_t i = 0; i < lines.size(); i++) cout << lines[i] << '\n'; return 0; }
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