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/*
* ce -- center text
* $ cc -O2 -o ce ce.c
*/
#include <err.h>
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define MAXBUF 255
int
main(int argc, char *argv[])
{
char *buf;
int cols, i, max;
if(argc-1 > 1){
fprintf(stderr, "usage: %s [cols]\n", argv[0]);
return 1;
}
cols = argv[1] ? atoi(argv[1]) : 80;
if(!(buf = malloc(MAXBUF)))
err(1, "malloc");
while(fgets(buf, MAXBUF, stdin)){
buf[strcspn(buf, "\n")] = 0;
/* Remove leading and trailing whitespace. */
for (; *buf; buf++)
if(!isspace(*buf)) break;
for (i = strlen(buf)-1; i >= 0; i--)
if(!isspace(buf[i])) break;
buf[i+1] = 0;
/* Calculate number of spaces. */
max = cols/2 + strlen(buf)/2;
printf("%*s\n", max, buf);
}
}
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