From f4ad2465582e82a72e8b5cf06933b82b14fd45d8 Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Fri, 23 Feb 2024 03:49:05 +0000
Subject: utility api's: added slbt_util_create_symfile().

---
 include/slibtool/slibtool.h    |  2 +
 project/common.mk              |  1 +
 src/util/slbt_create_symfile.c | 88 ++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 91 insertions(+)
 create mode 100644 src/util/slbt_create_symfile.c

diff --git a/include/slibtool/slibtool.h b/include/slibtool/slibtool.h
index 86d5ca5..4046352 100644
--- a/include/slibtool/slibtool.h
+++ b/include/slibtool/slibtool.h
@@ -422,6 +422,8 @@ slbt_api int  slbt_util_copy_file       (struct slbt_exec_ctx *,
 
 slbt_api int  slbt_util_create_mapfile  (const struct slbt_symlist_ctx *, const char *, mode_t);
 
+slbt_api int  slbt_util_create_symfile  (const struct slbt_symlist_ctx *, const char *, mode_t);
+
 slbt_api int  slbt_util_dump_machine    (const char * compiler, char * machine, size_t bufsize);
 
 slbt_api int  slbt_util_real_path       (int, const char *, int, char *, size_t);
diff --git a/project/common.mk b/project/common.mk
index f022fde..3139daa 100644
--- a/project/common.mk
+++ b/project/common.mk
@@ -24,6 +24,7 @@ API_SRCS = \
 	src/host/slbt_host_params.c \
 	src/util/slbt_archive_import.c \
 	src/util/slbt_create_mapfile.c \
+	src/util/slbt_create_symfile.c \
 	src/util/slbt_copy_file.c \
 	src/util/slbt_dump_machine.c \
 	src/util/slbt_map_input.c \
diff --git a/src/util/slbt_create_symfile.c b/src/util/slbt_create_symfile.c
new file mode 100644
index 0000000..d6ab9f7
--- /dev/null
+++ b/src/util/slbt_create_symfile.c
@@ -0,0 +1,88 @@
+/*******************************************************************/
+/*  slibtool: a skinny libtool implementation, written in C        */
+/*  Copyright (C) 2016--2024  SysDeer Technologies, LLC            */
+/*  Released under the Standard MIT License; see COPYING.SLIBTOOL. */
+/*******************************************************************/
+
+#include <time.h>
+#include <locale.h>
+#include <regex.h>
+#include <inttypes.h>
+#include <slibtool/slibtool.h>
+#include <slibtool/slibtool_output.h>
+#include "slibtool_driver_impl.h"
+#include "slibtool_dprintf_impl.h"
+#include "slibtool_errinfo_impl.h"
+#include "slibtool_pecoff_impl.h"
+#include "slibtool_ar_impl.h"
+
+/********************************************************/
+/* Clone a symbol list that could be used by a build    */
+/* system for code generation or any other purpose.     */
+/********************************************************/
+
+static int slbt_util_output_symfile_impl(
+	const struct slbt_driver_ctx *  dctx,
+	const struct slbt_symlist_ctx * sctx,
+	int                             fdout)
+{
+	bool            fcoff;
+	const char **   symv;
+	const char **   symstrv;
+
+	fcoff = slbt_host_objfmt_is_coff(dctx);
+
+	symstrv = sctx->symstrv;
+
+	for (symv=symstrv; *symv; symv++)
+		if (!fcoff || slbt_is_strong_coff_symbol(*symv))
+			if (slbt_dprintf(fdout,"%s\n",*symv) < 0)
+				return SLBT_SYSTEM_ERROR(dctx,0);
+
+	return 0;
+}
+
+
+static int slbt_util_create_symfile_impl(
+	const struct slbt_symlist_ctx *   sctx,
+	const char *                      path,
+	mode_t                            mode)
+{
+	int                             ret;
+	const struct slbt_driver_ctx *  dctx;
+	struct slbt_fd_ctx              fdctx;
+	int                             fdout;
+
+	dctx = (slbt_get_symlist_ictx(sctx))->dctx;
+
+	if (slbt_lib_get_driver_fdctx(dctx,&fdctx) < 0)
+		return SLBT_NESTED_ERROR(dctx);
+
+	if (path) {
+		if ((fdout = openat(
+				fdctx.fdcwd,path,
+				O_WRONLY|O_CREAT|O_TRUNC,
+				mode)) < 0)
+			return SLBT_SYSTEM_ERROR(dctx,0);
+	} else {
+		fdout = fdctx.fdout;
+	}
+
+	ret = slbt_util_output_symfile_impl(
+		dctx,sctx,fdout);
+
+	if (path) {
+		close(fdout);
+	}
+
+	return ret;
+}
+
+
+int slbt_util_create_symfile(
+	const struct slbt_symlist_ctx *   sctx,
+	const char *                      path,
+	mode_t                            mode)
+{
+	return slbt_util_create_symfile_impl(sctx,path,mode);
+}
-- 
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