diff options
Diffstat (limited to 'src/misc/s6-linux-init-echo.c')
-rw-r--r-- | src/misc/s6-linux-init-echo.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/src/misc/s6-linux-init-echo.c b/src/misc/s6-linux-init-echo.c new file mode 100644 index 0000000..483efe2 --- /dev/null +++ b/src/misc/s6-linux-init-echo.c @@ -0,0 +1,39 @@ +/* ISC license. */ + +#include <skalibs/sgetopt.h> +#include <skalibs/buffer.h> +#include <skalibs/strerr2.h> + +#define USAGE "s6-linux-init-echo [ -n ] [ -s sep ] args..." + +int main (int argc, char const *const *argv) +{ + char sep = ' ' ; + char donl = 1 ; + PROG = "s6-linux-init-echo" ; + { + subgetopt_t l = SUBGETOPT_ZERO ; + for (;;) + { + int opt = subgetopt_r(argc, argv, "ns:", &l) ; + if (opt == -1) break ; + switch (opt) + { + case 'n': donl = 0 ; break ; + case 's': sep = *l.arg ; break ; + default : strerr_dieusage(100, USAGE) ; + } + } + argc -= l.ind ; argv += l.ind ; + } + for ( ; *argv ; argv++) + if ((buffer_puts(buffer_1small, *argv) < 0) + || (argv[1] && (buffer_put(buffer_1small, &sep, 1) < 0))) + goto err ; + if (donl && (buffer_put(buffer_1small, "\n", 1) < 0)) goto err ; + if (!buffer_flush(buffer_1small)) goto err ; + return 0 ; + + err: + strerr_diefu1sys(111, "write to stdout") ; +} |