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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-15 05:54:39 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-15 05:54:39 +0000
commit267c6f2ac71f92999e969232431ba04678e7437e (patch)
tree358c9467650e1d0a1d7227a21dac2e3d08b622b2 /include/rtl/bootstrap.h
parentInitial commit. (diff)
downloadlibreoffice-267c6f2ac71f92999e969232431ba04678e7437e.tar.xz
libreoffice-267c6f2ac71f92999e969232431ba04678e7437e.zip
Adding upstream version 4:24.2.0.upstream/4%24.2.0
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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diff --git a/include/rtl/bootstrap.h b/include/rtl/bootstrap.h
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+/* -*- 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+/*
+ * This file is part of LibreOffice published API.
+ */
+#ifndef INCLUDED_RTL_BOOTSTRAP_H
+#define INCLUDED_RTL_BOOTSTRAP_H
+
+#include "sal/config.h"
+
+#include "rtl/ustring.h"
+#include "sal/saldllapi.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ @file
+
+ The described concept provides a platform independent way to access
+ minimum bootstrap settings for every application by explicitly or
+ implicitly passing the values to the application.
+
+ <strong>MULTI-LEVEL STRATEGY FOR RETRIEVAL OF BOOTSTRAP VALUES:</strong>
+
+ The 1st level is tried first. On failure,
+ the next level is tried. Every query starts at the first level again, so
+ that one setting may be taken from the 3rd and one from the 1st level.
+
+ 1st level: explicitly set variables via rtl_bootstrap_set()
+
+ 2nd level: command line arguments. A `-env:SETTINGNAME=value` is given on
+ command line. This allows giving an application a certain setting, even
+ if an ini-file exists (especially useful for e.g. daemons that want to
+ start an executable with dynamical changing settings).
+
+ 3rd level: environment variables. The application tries to get the
+ setting from the environment.
+
+ 4th level: executable ini-file. Every application looks for an ini-file.
+ The filename defaults to `/absolute/path/to/executable[rc|.ini]`
+ without .bin or .exe suffix. The ini-filename can be
+ set by the special command line parameter
+ `-env:INIFILENAME=/absolute/path/to/inifile` at runtime or it may
+ be set at compile time by an API-call.
+
+ 5th level: URE_BOOTSTRAP ini-file. If the bootstrap variable URE_BOOTSTRAP
+ expands to the URL of an ini-file, that ini-file is searched.
+
+ 6th level: default. An application can have some default settings decided
+ at compile time, which allow the application to run even with no
+ deployment settings.
+
+ If neither of the above levels leads to a successful retrieval of the value
+ (no default possible), the application may fail to start.
+
+ <strong>NAMING CONVENTIONS</strong>
+
+ Naming conventions for names of bootstrap values:
+ Names may only include characters, that are allowed characters for
+ environment variables. This excludes '.', ' ', ';', ':' and any non-ascii
+ character. Names are case insensitive.
+
+ An ini-file is only allowed to have one section, which must be named
+ `[Bootstrap]` with the square brackets.
+ The section may be omitted.
+ The section name does not appear in the name of the corresponding
+ environment variable or commandline arg.
+ Values may be arbitrary unicode strings, they must be encoded in UTF8.
+
+ <em>Example:</em>
+
+ in an ini-file:
+ <code>
+ [Sectionname]
+ Name=value
+ </code>
+
+ as commandline arg:
+ <code>-env:Name=value</code>
+
+ as environment:
+ - <code>setenv Name value</code>
+ - <code>set Name=value</code>
+
+ <strong>SPECIAL VARIABLES:</strong>
+
+ - INIFILENAME<br>
+ This variable allows to set the inifilename. This makes only sense, if the filename
+ is different than the executable file name. It must be given on command line. If it is
+ given the executable ini-file is ignored.
+*/
+
+/** may be called by an application to set an ini-filename.
+
+ Must be called before rtl_bootstrap_get(). May not be called twice.
+ If it is never called, the filename is based on the name of the executable,
+ with the suffix ".ini" on Windows or "rc" on Unix.
+
+ @param pFileUri URL of the inifile with path but WITHOUT suffix (.ini or rc)
+*/
+SAL_DLLPUBLIC void SAL_CALL rtl_bootstrap_setIniFileName( rtl_uString *pFileUri );
+
+/**
+ @param pName
+ The name of the bootstrap setting to be retrieved.
+ @param[out] ppValue
+ Contains always a valid rtl_uString pointer.
+ @param pDefault
+ maybe <code>NULL</code>. If once the default is
+ returned, successive calls always return this
+ default value, even when called with different
+ defaults.
+
+ @retval sal_True when a value could be retrieved successfully.
+ When a <code>pDefault</code> value is given,
+ the function always returns <code>sal_True</code>.
+ @retval sal_False when none of the 4 methods gave a value.
+ <code>ppValue</code> then contains an empty string.
+*/
+SAL_DLLPUBLIC sal_Bool SAL_CALL rtl_bootstrap_get(
+ rtl_uString *pName, rtl_uString **ppValue, rtl_uString *pDefault );
+
+/** Sets a bootstrap parameter.
+
+ @param pName
+ name of bootstrap parameter
+ @param pValue
+ value of bootstrap parameter
+*/
+SAL_DLLPUBLIC void SAL_CALL rtl_bootstrap_set(
+ rtl_uString * pName, rtl_uString * pValue );
+
+
+typedef void * rtlBootstrapHandle;
+
+/**
+ Opens a bootstrap argument container.
+ @param[in] pIniName The name of the ini-file to use, if <code>NULL</code> defaults
+ to the executables name
+ @return Handle for a bootstrap argument container
+*/
+SAL_DLLPUBLIC rtlBootstrapHandle SAL_CALL rtl_bootstrap_args_open(rtl_uString * pIniName);
+
+/**
+ Closes a bootstrap argument container.
+ @param[in] handle The handle got by rtl_bootstrap_args_open()
+*/
+SAL_DLLPUBLIC void SAL_CALL rtl_bootstrap_args_close(rtlBootstrapHandle handle)
+ SAL_THROW_EXTERN_C();
+
+/**
+ @param[in] handle The handle got by rtl_bootstrap_args_open()
+ @param[in] pName The name of the variable to be retrieved
+ @param[out] ppValue The result of the retrieval. *ppValue may be null in case of failure.
+ @param[in] pDefault The default value for the retrieval, may be <code>NULL</code>
+
+ @return The status of the retrieval, <code>sal_True</code> on success.
+*/
+SAL_DLLPUBLIC sal_Bool SAL_CALL rtl_bootstrap_get_from_handle(
+ rtlBootstrapHandle handle, rtl_uString *pName, rtl_uString **ppValue, rtl_uString *pDefault);
+
+
+/** Returns the name of the inifile associated with this handle.
+
+ @param[in] handle The handle got by rtl_bootstrap_args_open()
+ @param[out] ppIniName contains after the call the name of the ini-filename.
+*/
+SAL_DLLPUBLIC void SAL_CALL rtl_bootstrap_get_iniName_from_handle(
+ rtlBootstrapHandle handle, rtl_uString ** ppIniName);
+
+/** Expands a macro using bootstrap variables.
+
+ @param[in] handle The handle got by rtl_bootstrap_args_open()
+ @param[in,out] macro The macro to be expanded
+*/
+SAL_DLLPUBLIC void SAL_CALL rtl_bootstrap_expandMacros_from_handle(
+ rtlBootstrapHandle handle, rtl_uString ** macro );
+
+/** Expands a macro using default bootstrap variables.
+
+ @param[in,out] macro The macro to be expanded
+*/
+SAL_DLLPUBLIC void SAL_CALL rtl_bootstrap_expandMacros(
+ rtl_uString ** macro);
+
+/** Escapes special characters ("$" and "\").
+
+ @param value
+ an arbitrary, non-NULL value
+
+ @param[out] encoded
+ the given value with all occurrences of special characters ("$" and "\") escaped
+
+ @since UDK 3.2.9
+*/
+SAL_DLLPUBLIC void SAL_CALL rtl_bootstrap_encode(
+ rtl_uString const * value, rtl_uString ** encoded );
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */