Add s6-rc-set-list

2 files changed, 89 insertions, 0 deletions

diff --git a/src/repo/deps-exe/s6-rc-set-list b/src/repo/deps-exe/s6-rc-set-list
new file mode 100644
index 0000000..9fe69bb
--- /dev/null
+++ b/src/repo/deps-exe/s6-rc-set-list
@@ -0,0 +1,3 @@
+${LIBS6RCREPO}
+-lskarnet
+${SPAWN_LIB}
diff --git a/src/repo/s6-rc-set-list.c b/src/repo/s6-rc-set-list.c
new file mode 100644
index 0000000..84ef3bb
--- /dev/null
+++ b/src/repo/s6-rc-set-list.c
@@ -0,0 +1,86 @@
+/* ISC license. */
+
+#include <skalibs/nonposix.h>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+
+#include <skalibs/envexec.h>
+#include <skalibs/direntry.h>
+#include <skalibs/buffer.h>
+
+#include <s6-rc/config.h>
+#include <s6-rc/repo.h>
+
+#define USAGE "s6-rc-set-list [ -v verbosity ] [ -r repo ] set"
+#define dieusage() strerr_dieusage(100, USAGE)
+
+enum gola_e
+{
+  GOLA_VERBOSITY,
+  GOLA_REPODIR,
+  GOLA_N
+} ;
+
+int main (int argc, char const *const *argv)
+{
+  static gol_arg const rgola[] =
+  {
+    { .so = 'v', .lo = "verbosity", .i = GOLA_VERBOSITY },
+    { .so = 'r', .lo = "repodir", .i = GOLA_REPODIR }
+  } ;
+  int fdlock ;
+  unsigned int verbosity = 1 ;
+  char const *wgola[GOLA_N] = { 0 } ;
+  unsigned int golc ;
+  int e ;
+  uint8_t sub = 4 ;
+
+  PROG = "s6-rc-set-list" ;
+  wgola[GOLA_REPODIR] = S6RC_REPODIR ;
+
+  golc = gol_main(argc, argv, 0, 0, rgola, GOLA_N, 0, wgola) ;
+  argc -= golc ; argv += golc ;
+  if (wgola[GOLA_VERBOSITY] && !uint0_scan(wgola[GOLA_VERBOSITY], &verbosity))
+    strerr_dief1x(100, "verbosity needs to be an unsigned integer") ;
+  if (!argc) dieusage() ;
+  if (strchr(argv[0], '/') || strchr(argv[0], '\n'))
+      strerr_dief1x(100, "set names cannot contain / or newlines") ;
+
+  fdlock = s6rc_repo_lock(wgola[GOLA_REPODIR], 1) ;
+  if (fdlock == -1) strerr_diefu2sys(111, "lock ", wgola[GOLA_REPODIR]) ;
+
+  e = s6rc_repo_checkset(wgola[GOLA_REPODIR], argv[0]) ;
+  if (e) _exit(e) ;
+
+  size_t repolen = strlen(wgola[GOLA_REPODIR]) ;
+  size_t setlen = strlen(argv[0]) ;
+  char fn[repolen + setlen + 17] ;
+  memcpy(fn, wgola[GOLA_REPODIR], repolen) ;
+  memcpy(fn + repolen, "/sources/", 9) ;
+  memcpy(fn + repolen + 9, argv[0], setlen) ;
+  fn[repolen + 9 + setlen] = '/' ;
+  while (sub--)
+  {
+    memcpy(fn + repolen + 10 + setlen, s6rc_repo_subnames[sub], 7) ;
+    DIR *dir = opendir(fn) ;
+    if (!dir) strerr_diefu2sys(111, "opendir ", fn) ;
+    for (;;)
+    {
+      direntry *d ;
+      errno = 0 ;
+      d = readdir(dir) ;
+      if (!d) break ;
+      if (d->d_name[0] == '.') continue ;
+      if (buffer_puts(buffer_1, d->d_name) < 0
+       || buffer_put(buffer_1, "/", 1) < 0
+       || buffer_put(buffer_1, s6rc_repo_subnames[sub], 6) < 0
+       || buffer_put(buffer_1, "\n", 1) < 0)
+        strerr_diefu1sys(111, "write to stdout") ;
+    }
+    if (errno) strerr_diefu2sys(111, "readdir ", fn) ;
+    dir_close(dir) ;
+  }
+  if (!buffer_flush(buffer_1)) strerr_diefu1sys(111, "write to stdout") ;
+  _exit(0) ;
+}