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-rw-r--r--etc/ce.c44
1 files changed, 44 insertions, 0 deletions
diff --git a/etc/ce.c b/etc/ce.c
new file mode 100644
index 0000000..c8981bd
--- /dev/null
+++ b/etc/ce.c
@@ -0,0 +1,44 @@
+/*
+ * 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);
+ }
+}