94 lines
1.9 KiB
C
94 lines
1.9 KiB
C
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/*++
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Copyright (c) 1991 Microsoft Corporation
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Module Name:
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tee.c
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Abstract:
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Utility program to read stdin and write it to stdout and a file.
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Author:
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Steve Wood (stevewo) 01-Feb-1992
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Revision History:
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--*/
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#include <windows.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <ctype.h>
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#include <string.h>
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void
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Usage()
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{
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printf("Usage: tee [-a] OutputFileName(s)...\n" );
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exit(1);
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}
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#define MAX_OUTPUT_FILES 8
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__cdecl main( argc, argv )
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int argc;
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char *argv[];
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{
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int i, c;
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char *s, *OpenFlags;
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int NumberOfOutputFiles;
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FILE *OutputFiles[ MAX_OUTPUT_FILES ];
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if (argc < 2) {
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Usage();
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}
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NumberOfOutputFiles = 0;
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OpenFlags = "wb";
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for (i=1; i<argc; i++) {
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s = argv[ i ];
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if (*s == '-' || *s == '/') {
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s++;
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switch( tolower( *s ) ) {
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case 'a': OpenFlags = "ab"; break;
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default: Usage();
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}
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}
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else
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if (NumberOfOutputFiles >= MAX_OUTPUT_FILES) {
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fprintf( stderr, "TEE: too many output files specified - %s\n", s );
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}
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else
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if (!(OutputFiles[NumberOfOutputFiles] = fopen( s, OpenFlags ))) {
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fprintf( stderr, "TEE: unable to open file - %s\n", s );
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}
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else {
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NumberOfOutputFiles++;
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}
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}
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if (NumberOfOutputFiles == 0) {
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fprintf( stderr, "TEE: no output files specified.\n" );
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}
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while ((c = getchar()) != EOF) {
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putchar( c );
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for (i=0; i<NumberOfOutputFiles; i++) {
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if (c == '\n') {
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putc('\r', OutputFiles[ i ] ); //CRT reads cr/lf as lf
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putc('\n', OutputFiles[ i ] ); //must write as cr/lf
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fflush( OutputFiles[ i ] );
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}
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else {
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putc( c, OutputFiles[ i ] );
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}
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}
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}
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return( 0 );
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}
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