ea9330adae
For example, "ledger eval options.limit" prints 0 (for false), but: "ledger -l hello eval options.limit" print "hello"s, since the value of options.limit, once set to a value, is that string. For flag options, such as -Y, eval prints 0 if unset, and 1 if set. This feature allows value expressions to be conditionalized based on the presence of user options.
150 lines
4.2 KiB
C++
150 lines
4.2 KiB
C++
/*
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* Copyright (c) 2003-2009, John Wiegley. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* - Neither the name of New Artisans LLC nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* @defgroup report Reporting
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*/
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/**
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* @file session.h
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* @author John Wiegley
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*
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* @ingroup report
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*
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* @brief Brief
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*
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* Long.
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*/
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#ifndef _SESSION_H
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#define _SESSION_H
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#include "option.h"
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#include "journal.h"
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#include "account.h"
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#include "format.h"
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namespace ledger {
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/**
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* @brief Brief
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*
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* Long.
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*/
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class session_t : public noncopyable, public scope_t
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{
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friend void set_session_context(session_t * session);
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public:
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bool flush_on_next_data_file;
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int current_year;
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shared_ptr<commodity_pool_t> commodity_pool;
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ptr_list<journal_t::parser_t> parsers;
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ptr_list<journal_t> journals;
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scoped_ptr<account_t> master;
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explicit session_t();
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virtual ~session_t() {
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TRACE_DTOR(session_t);
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}
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void now_at_command_line(const bool truth) {
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flush_on_next_data_file = true;
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}
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journal_t * create_journal();
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void close_journal(journal_t * journal);
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std::size_t read_journal(journal_t& journal,
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std::istream& in,
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const path& pathname,
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account_t * master = NULL);
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std::size_t read_journal(journal_t& journal,
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const path& pathname,
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account_t * master = NULL);
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std::size_t read_data(journal_t& journal,
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const string& master_account = "");
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void register_parser(journal_t::parser_t * parser) {
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parsers.push_back(parser);
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}
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void unregister_parser(journal_t::parser_t * parser);
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void clean_xacts();
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void clean_xacts(entry_t& entry);
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void clean_accounts();
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void clean_all() {
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clean_xacts();
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clean_accounts();
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}
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option_t<session_t> * lookup_option(const char * p);
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virtual expr_t::ptr_op_t lookup(const string& name);
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/**
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* Option handlers
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*/
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OPTION(session_t, account_); // -a
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OPTION(session_t, download); // -Q
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OPTION__
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(session_t, file_, // -f
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std::list<path> data_files;
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CTOR(session_t, file_) {}
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DO_(args) {
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assert(args.size() == 1);
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if (parent->flush_on_next_data_file) {
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data_files.clear();
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parent->flush_on_next_data_file = false;
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}
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data_files.push_back(args[0].as_string());
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});
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OPTION(session_t, input_date_format_);
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OPTION(session_t, price_db_);
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};
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/**
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* Set the current session context, transferring all static globals to point
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* at the data structures related to this session. Although Ledger itself is
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* not thread-safe, by locking, switching session context, then unlocking
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* after an operation is done, multiple threads can sequentially make use of
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* the library. Thus, a session_t maintains all of the information relating
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* to a single usage of the Ledger library.
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*/
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void set_session_context(session_t * session);
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} // namespace ledger
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#endif // _SESSION_H
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