1 files changed, 54 insertions, 0 deletions
diff --git a/src/helpers/s6-frontend-helper-echo.c b/src/helpers/s6-frontend-helper-echo.c
new file mode 100644
index 0000000..5d416bd
--- /dev/null
+++ b/src/helpers/s6-frontend-helper-echo.c
@@ -0,0 +1,54 @@
+/* ISC license. */
+
+#include <unistd.h>
+
+#include <skalibs/uint64.h>
+#include <skalibs/buffer.h>
+#include <skalibs/envexec.h>
+
+#define USAGE "s6-frontend-helper-echo [ -n ] [ -s sep ] args..."
+
+enum golb_e
+{
+  GOLB_CHOMP = 0x01,
+} ;
+
+enum gola_e
+{
+  GOLA_SEP,
+  GOLA_N
+} ;
+
+int main (int argc, char const *const *argv)
+{
+  static gol_bool const rgolb[] =
+  {
+    { .so = 'n', .lo = "chomp", .clear = 0, .set = GOLB_CHOMP },
+  } ;
+  static gol_arg const rgola[] =
+  {
+    { .so = 's', .lo = "separator", .i = GOLA_SEP },
+  } ;
+  uint64_t wgolb = 0 ;
+  char const *wgola[GOLA_N] = { [GOLA_SEP] = " " } ;
+  PROG = "s6-frontend-helper-echo" ;
+  {
+    unsigned int golc = GOL_main(argc, argv, rgolb, rgola, &wgolb, wgola) ;
+    argc -= golc ; argv += golc ;
+  }
+
+  for (; *argv ; argv++)
+  {
+    if (buffer_puts(buffer_1small, *argv) == -1) goto err ;
+    if (argv[1] && buffer_put(buffer_1small, wgola[GOLA_SEP], 1) == -1) goto err ;
+  }
+  if (!(wgolb & GOLB_CHOMP))
+  {
+    if (buffer_put(buffer_1small, "\n", 1) == -1) goto err ;
+  }
+  if (!buffer_flush(buffer_1small)) goto err ;
+  _exit(0) ;
+
+err:
+  strerr_diefu1sys(111, "write to stdout") ;
+}