commit 19e8c4515872711d11e271ddd5a775f80f907877
parent a6308d52be0d26e35fc1bd40256961393f23ab3d
Author: Robert Ransom <rransom.8774@gmail.com>
Date: Mon, 21 May 2012 22:05:09 +0000
mc: Initial commit
Diffstat:
| M | Makefile | | | 1 | + |
| A | mc.c | | | 83 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
2 files changed, 84 insertions(+), 0 deletions(-)
diff --git a/Makefile b/Makefile
@@ -37,6 +37,7 @@ SRC = \
kill.c \
ln.c \
ls.c \
+ mc.c \
mkdir.c \
mkfifo.c \
mv.c \
diff --git a/mc.c b/mc.c
@@ -0,0 +1,83 @@
+/* See LICENSE file for copyright and license details. */
+#include <assert.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include "text.h"
+#include "util.h"
+
+static long chars = 65;
+static struct linebuf b = EMPTY_LINEBUF;
+
+static long n_columns;
+static long n_rows;
+
+int
+main(int argc, char *argv[])
+{
+ int c;
+ long i, l, col;
+ size_t maxlen = 0;
+ char *space;
+ FILE *fp;
+
+ while ((c = getopt(argc, argv, "c:")) != -1)
+ switch (c) {
+ case 'c':
+ chars = estrtol(optarg, 0);
+ if (chars < 3)
+ eprintf("%d: too few character columns");
+ break;
+ default:
+ exit(2);
+ }
+
+ /* XXX librarify this chunk, too? only useful in sponges though */
+ if(optind == argc)
+ getlines(stdin, &b);
+ else for(; optind < argc; optind++) {
+ if(!(fp = fopen(argv[optind], "r")))
+ eprintf("fopen %s:", argv[optind]);
+ getlines(fp, &b);
+ fclose(fp);
+ }
+
+ for(l = 0; l < b.nlines; ++l) {
+ size_t len = strlen(b.lines[l]);
+ if(len > 0 && b.lines[l][len-1] == '\n')
+ b.lines[l][--len] = '\0';
+ if(len > maxlen)
+ maxlen = len;
+ if(maxlen > (chars - 1) / 2)
+ break;
+ }
+
+ n_columns = (chars + 1) / (maxlen + 1);
+ if(n_columns <= 1) {
+ for(l = 0; l < b.nlines; ++l) {
+ fputs(b.lines[l], stdout);
+ }
+ return EXIT_SUCCESS;
+ }
+
+ if(!(space = malloc(maxlen + 2)))
+ eprintf("malloc:");
+ memset(space, ' ', maxlen + 1);
+ space[maxlen + 1] = '\0';
+
+ n_rows = (b.nlines + (n_columns - 1)) / n_columns;
+ for(i = 0; i < n_rows; ++i) {
+ for(l = i, col = 1; l < b.nlines; l += n_rows, ++col) {
+ /*sprintf(b.lines[l], "%ld,%ld$", i, col);*/
+ fputs(b.lines[l], stdout);
+ if(col < n_columns)
+ fputs(space + strlen(b.lines[l]), stdout);
+ }
+ fputs("\n", stdout);
+ }
+
+ return EXIT_SUCCESS;
+}
+
