From 72b6d428af4925e7064c6166b732301c8918e8c4 Mon Sep 17 00:00:00 2001
From: Laurent Bercot <ska-skaware@skarnet.org>
Date: Sun, 12 Feb 2023 02:15:32 +0000
Subject:  Add multicall configuration

Signed-off-by: Laurent Bercot <ska@appnovation.com>
---
 tools/gen-multicall.sh | 86 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100755 tools/gen-multicall.sh

(limited to 'tools/gen-multicall.sh')

diff --git a/tools/gen-multicall.sh b/tools/gen-multicall.sh
new file mode 100755
index 0000000..843f4df
--- /dev/null
+++ b/tools/gen-multicall.sh
@@ -0,0 +1,86 @@
+#!/bin/sh -e
+
+P="$1"
+p=`echo $P | tr - _`
+
+echo '/* ISC license. */'
+echo
+echo '#include <skalibs/nonposix.h>'
+echo
+{ echo '#include <string.h>' ; echo '#include <stdlib.h>' ; cat src/$P/*.c | grep '^#include <' | grep -vF '<skalibs/' | grep -vF '<linux/' | grep -vF "<$P/" ; } | sort -u
+
+cat <<EOF
+
+#include <linux/random.h>
+
+#include <skalibs/skalibs.h>
+
+#include <$P/config.h>
+#include "s6ps.h"
+
+typedef int main_func (int, char const *const *, char const *const *) ;
+typedef main_func *main_func_ref ;
+
+typedef struct multicall_app_s multicall_app, *multicall_app_ref ;
+struct multicall_app_s
+{
+  char const *name ;
+  main_func_ref mainf ;
+} ;
+
+static int multicall_app_cmp (void const *a, void const *b)
+{
+  char const *name = a ;
+  multicall_app const *p = b ;
+  return strcmp(name, p->name) ;
+}
+EOF
+
+for i in `ls -1 src/$P/deps-exe` ; do
+  j=`echo $i | tr - _`
+  echo
+  grep -v '^#include ' < src/$P/${i}.c | grep -vF '/* ISC license. */' | sed -e "s/int main (.*)$/int ${j}_main (int argc, char const *const *argv, char const *const *envp)/"
+  echo
+  echo '#undef USAGE'
+  echo '#undef dieusage'
+  echo '#undef dienomem'
+done
+
+cat <<EOF
+
+static int ${p}_main (int, char const *const *, char const *const *) ;
+
+static multicall_app const multicall_apps[] =
+{
+EOF
+
+for i in `{ echo $P ; ls -1 src/$P/deps-exe ; } | sort` ; do
+  j=`echo $i | tr - _`
+  echo "  { .name = \"${i}\", .mainf = &${j}_main },"
+done
+
+cat <<EOF
+} ;
+
+#define USAGE "$P subcommand [ arguments... ]"
+#define dieusage() strerr_dieusage(100, USAGE)
+
+static int ${p}_main (int argc, char const *const *argv, char const *const *envp)
+{
+  multicall_app const *p ;
+  PROG = "$P" ;
+  if (argc < 2) dieusage() ;
+  p = bsearch(argv[1], multicall_apps, sizeof(multicall_apps) / sizeof(multicall_app), sizeof(multicall_app), &multicall_app_cmp) ;
+  if (!p) strerr_dief2x(100, "unknown subcommand: ", argv[1]) ;
+  return (*(p->mainf))(argc-1, argv+1, envp) ;
+}
+
+int main (int argc, char const *const *argv, char const *const *envp)
+{
+  multicall_app const *p ;
+  char const *name = strrchr(argv[0], '/') ;
+  if (name) name++ ; else name = argv[0] ;
+  p = bsearch(name, multicall_apps, sizeof(multicall_apps) / sizeof(multicall_app), sizeof(multicall_app), &multicall_app_cmp) ;
+  return p ? (*(p->mainf))(argc, argv, envp) : ${p}_main(argc, argv, envp) ;
+}
+EOF
-- 
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