blind-cat-rows.c - blind - suckless command-line video editing utility
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       ---
       blind-cat-rows.c (930B)
       ---
            1 /* See LICENSE file for copyright and license details. */
            2 #include "common.h"
            3 
            4 USAGE("stream ...")
            5 
            6 int
            7 main(int argc, char *argv[])
            8 {
            9         struct stream *streams;
           10         size_t height = 0, *rows;
           11         int i;
           12 
           13         UNOFLAGS(!argc);
           14 
           15         streams = emalloc2((size_t)argc, sizeof(*streams));
           16         rows    = alloca((size_t)argc * sizeof(*rows));
           17 
           18         for (i = 0; i < argc; i++) {
           19                 eopen_stream(streams + i, argv[i]);
           20                 if (streams[i].height > SIZE_MAX - height)
           21                         eprintf("output video is too wide\n");
           22                 height += rows[i] = streams[i].height;
           23                 if (i) {
           24                         streams[i].height = streams->height;
           25                         echeck_compat(streams, streams + i);
           26                 }
           27         }
           28 
           29         streams->height = height;
           30         fprint_stream_head(stdout, streams);
           31         efflush(stdout, "<stdout>");
           32 
           33         for (i = 0; i < argc; i++, i = i == argc ? 0 : i)
           34                 if (esend_rows(streams + i, STDOUT_FILENO, rows[i], "<stdout>") != rows[i])
           35                         break;
           36         for (i = 0; i < argc; i++)
           37                 close(streams[i].fd);
           38 
           39         free(streams);
           40         return 0;
           41 }