mirror of
https://github.com/reactos/reactos.git
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246 lines
5.9 KiB
C
246 lines
5.9 KiB
C
/*
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* ReactOS Win32 Applications
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* Copyright (C) 2005 ReactOS Team
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*
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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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 for more details.
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*
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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., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*
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* PROJECT: ReactOS Comp utility
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* COPYRIGHT: See COPYING in the top level directory
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* FILE: base/applications/cmdutils/comp/comp.c
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* PURPOSE: Compares the contents of two files
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* PROGRAMMERS: Ged Murphy (gedmurphy@gmail.com)
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <assert.h>
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#define WIN32_NO_STATUS
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#include <windef.h>
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#include <winbase.h>
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#include <conutils.h>
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#include "resource.h"
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#define STRBUF 1024
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/* getline: read a line, return length */
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INT GetBuff(PBYTE buff, FILE* in)
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{
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return fread(buff, sizeof(BYTE), STRBUF, in);
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}
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INT FileSize(FILE* fd)
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{
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INT result = -1;
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if (fseek(fd, 0, SEEK_END) == 0 && (result = ftell(fd)) != -1)
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{
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/* Restoring file pointer */
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rewind(fd);
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}
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return result;
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}
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int wmain(int argc, WCHAR* argv[])
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{
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INT i;
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/* File pointers */
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FILE *fp1 = NULL;
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FILE *fp2 = NULL;
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INT BufLen1, BufLen2;
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PBYTE Buff1 = NULL;
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PBYTE Buff2 = NULL;
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WCHAR File1[_MAX_PATH + 1], // File paths
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File2[_MAX_PATH + 1];
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BOOL bAscii = FALSE, // /A switch
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bLineNos = FALSE; // /L switch
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UINT LineNumber;
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UINT Offset;
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INT FileSizeFile1;
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INT FileSizeFile2;
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INT NumberOfOptions = 0;
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INT FilesOK = 1;
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INT Status = EXIT_SUCCESS;
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/* Initialize the Console Standard Streams */
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ConInitStdStreams();
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/* Parse command line for options */
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for (i = 1; i < argc; i++)
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{
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if (argv[i][0] == L'/')
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{
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switch (towlower(argv[i][1]))
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{
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case L'a':
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bAscii = TRUE;
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NumberOfOptions++;
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break;
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case L'l':
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bLineNos = TRUE;
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NumberOfOptions++;
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break;
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case L'?':
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ConResPuts(StdOut, IDS_HELP);
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return EXIT_SUCCESS;
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default:
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ConResPrintf(StdErr, IDS_INVALIDSWITCH, argv[i][1]);
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ConResPuts(StdOut, IDS_HELP);
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return EXIT_FAILURE;
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}
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}
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}
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if (argc - NumberOfOptions == 3)
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{
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wcsncpy(File1, argv[1 + NumberOfOptions], _MAX_PATH);
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wcsncpy(File2, argv[2 + NumberOfOptions], _MAX_PATH);
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}
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else
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{
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ConResPuts(StdErr, IDS_BADSYNTAX);
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return EXIT_FAILURE;
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}
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Buff1 = (PBYTE)malloc(STRBUF);
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if (Buff1 == NULL)
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{
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ConPuts(StdErr, L"Can't get free memory for Buff1\n");
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Status = EXIT_FAILURE;
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goto Cleanup;
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}
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Buff2 = (PBYTE)malloc(STRBUF);
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if (Buff2 == NULL)
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{
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ConPuts(StdErr, L"Can't get free memory for Buff2\n");
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Status = EXIT_FAILURE;
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goto Cleanup;
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}
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if ((fp1 = _wfopen(File1, L"rb")) == NULL)
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{
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ConResPrintf(StdErr, IDS_FILEERROR, File1);
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Status = EXIT_FAILURE;
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goto Cleanup;
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}
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if ((fp2 = _wfopen(File2, L"rb")) == NULL)
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{
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ConResPrintf(StdErr, IDS_FILEERROR, File2);
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Status = EXIT_FAILURE;
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goto Cleanup;
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}
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ConResPrintf(StdOut, IDS_COMPARING, File1, File2);
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FileSizeFile1 = FileSize(fp1);
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if (FileSizeFile1 == -1)
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{
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ConResPrintf(StdErr, IDS_FILESIZEERROR, File1);
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Status = EXIT_FAILURE;
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goto Cleanup;
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}
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FileSizeFile2 = FileSize(fp2);
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if (FileSizeFile2 == -1)
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{
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ConResPrintf(StdErr, IDS_FILESIZEERROR, File2);
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Status = EXIT_FAILURE;
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goto Cleanup;
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}
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if (FileSizeFile1 != FileSizeFile2)
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{
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ConResPuts(StdOut, IDS_SIZEDIFFERS);
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Status = EXIT_FAILURE;
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goto Cleanup;
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}
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LineNumber = 1;
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Offset = 0;
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while (1)
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{
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BufLen1 = GetBuff(Buff1, fp1);
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BufLen2 = GetBuff(Buff2, fp2);
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if (ferror(fp1) || ferror(fp2))
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{
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ConResPuts(StdErr, IDS_READERROR);
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Status = EXIT_FAILURE;
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goto Cleanup;
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}
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if (!BufLen1 && !BufLen2)
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break;
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assert(BufLen1 == BufLen2);
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for (i = 0; i < BufLen1; i++)
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{
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if (Buff1[i] != Buff2[i])
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{
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FilesOK = 0;
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/* Reporting here a mismatch */
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if (bLineNos)
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ConResPrintf(StdOut, IDS_MISMATCHLINE, LineNumber);
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else
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ConResPrintf(StdOut, IDS_MISMATCHOFFSET, Offset);
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if (bAscii)
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{
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ConResPrintf(StdOut, IDS_ASCIIDIFF, 1, Buff1[i]);
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ConResPrintf(StdOut, IDS_ASCIIDIFF, 2, Buff2[i]);
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}
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else
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{
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ConResPrintf(StdOut, IDS_HEXADECIMALDIFF, 1, Buff1[i]);
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ConResPrintf(StdOut, IDS_HEXADECIMALDIFF, 2, Buff2[i]);
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}
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}
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Offset++;
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if (Buff1[i] == '\n')
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LineNumber++;
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}
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}
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if (FilesOK)
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ConResPuts(StdOut, IDS_MATCH);
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Cleanup:
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if (fp2)
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fclose(fp2);
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if (fp1)
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fclose(fp1);
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if (Buff2)
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free(Buff2);
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if (Buff1)
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free(Buff1);
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return Status;
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}
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/* EOF */
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