79 lines
1.1 KiB
C
79 lines
1.1 KiB
C
/* cat -- third revision of a program to concatenate files and/or stdin onto */
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/* stdout */
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdbool.h>
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#include <unistd.h>
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#include <string.h>
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#include "support.h"
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/* Params */
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enum
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{
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U
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};
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int main(int argc, char **argv)
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{
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int i, i2;
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char param_state[1] = {0};
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FILE *fd;
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i = i2 = 0;
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fd = 0;
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for(; (i = getopt(argc, argv, "u")) != -1;)
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{
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switch(i)
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{
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case 'u':
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param_state[U] = 1;
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break;
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default:
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throw(NEEDARG_FAIL, mastrcat(argv[0], " [-u] [file ...]"));
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}
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}
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i = optind;
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if(param_state[U])
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{
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setvbuf(stdout, NULL, _IONBF, 0);
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}
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do
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{
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if(argv[i] == NULL || !strcmp("-", argv[i]))
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{
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fd = fopen("/dev/stdin", "r");
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}
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else
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{
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if( !(fd = fopen(argv[i], "r")))
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{
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throw(FOPEN_FAIL, mastrcat(argv[0], mastrcat(": could not open file ", argv[i])));
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}
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}
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for(i2 = 0; (i2 = fgetc(fd)) != EOF; i2 = 0)
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{
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fputc(i2, stdout);
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}
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i++;
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}
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while(i < argc);
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exit(EXIT_SUCCESS);
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}
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