Kill the libreofficekit static library / shim.c.

It looks like the cleanest method of getting lok_init into
a LibreOfficeKitInit.h header (in a c89 compatible way) is to
have it as a static function.

(inline is only available in C99 or later -- this is actually
available on Linux which is the only place that we can actually
use lok_init anyways currently, however given we have to keep
c89 for the C code (for MSVC) compatibility, selectively enabling
c99 would likely be more messy.)

Change-Id: I0493e7a68ed5397479220bb6ba8c3db870b6dd32

2 files changed, 96 insertions, 2 deletions

diff --git a/include/LibreOfficeKit/LibreOfficeKit.h b/include/LibreOfficeKit/LibreOfficeKit.h
index 675eabc5ae5e..9c746348eac9 100644
--- a/include/LibreOfficeKit/LibreOfficeKit.h
+++ b/include/LibreOfficeKit/LibreOfficeKit.h
@@ -105,8 +105,6 @@ struct _LibreOfficeKitDocumentClass
 #endif // LOK_USE_UNSTABLE_API
 };
 
-LibreOfficeKit* lok_init (const char* pInstallPath);
-
 #ifdef __cplusplus
 }
 #endif
diff --git a/include/LibreOfficeKit/LibreOfficeKitInit.h b/include/LibreOfficeKit/LibreOfficeKitInit.h
new file mode 100644
index 000000000000..ef01b1c84d31
--- /dev/null
+++ b/include/LibreOfficeKit/LibreOfficeKitInit.h
@@ -0,0 +1,96 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#ifndef INCLUDED_DESKTOP_INC_LIBREOFFICEKIT_INIT_H
+#define INCLUDED_DESKTOP_INC_LIBREOFFICEKIT_INIT_H
+
+#include "LibreOfficeKit.h"
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#if defined(__linux__) || defined(_AIX)
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <dlfcn.h>
+#ifdef  _AIX
+#  include <sys/ldr.h>
+#endif
+
+#define TARGET_LIB        "lib" "sofficeapp" ".so"
+#define TARGET_MERGED_LIB "lib" "mergedlo" ".so"
+
+typedef LibreOfficeKit *(HookFunction)( const char *install_path);
+
+static LibreOfficeKit *lok_init( const char *install_path )
+{
+    char *imp_lib;
+    size_t partial_length;
+    void *dlhandle;
+    HookFunction *pSym;
+
+    if (!install_path)
+        return NULL;
+
+    // allocate large enough buffer
+    partial_length = strlen(install_path);
+    imp_lib = (char *) malloc(partial_length + sizeof(TARGET_LIB) + sizeof(TARGET_MERGED_LIB) + 2);
+    if (!imp_lib)
+    {
+        fprintf( stderr, "failed to open library : not enough memory\n");
+        return NULL;
+    }
+
+    strcpy(imp_lib, install_path);
+
+    imp_lib[partial_length++] = '/';
+    strcpy(imp_lib + partial_length, TARGET_LIB);
+
+    dlhandle = dlopen(imp_lib, RTLD_LAZY);
+    if (!dlhandle)
+    {
+        strcpy(imp_lib + partial_length, TARGET_MERGED_LIB);
+
+        dlhandle = dlopen(imp_lib, RTLD_LAZY);
+        if (!dlhandle)
+        {
+            fprintf(stderr, "failed to open library '%s' or '%s' in '%s/'\n",
+                    TARGET_LIB, TARGET_MERGED_LIB, install_path);
+            free(imp_lib);
+            return NULL;
+        }
+    }
+
+    pSym = (HookFunction *) dlsym( dlhandle, "libreofficekit_hook" );
+    if (!pSym)
+    {
+        fprintf( stderr, "failed to find hook in library '%s'\n", imp_lib );
+        dlclose( dlhandle );
+        free( imp_lib );
+        return NULL;
+    }
+
+    free( imp_lib );
+    return pSym( install_path );
+}
+
+#endif // defined(__linux__) || defined(_AIX)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */