ledger/main.cc
John Wiegley 4518ea9540 Value expression architecture is now rewritten, but the functionality of the
old system (for example, the meaning of 'a') has yet to be restored.  In the
new scheme, this will be done by definition a function outside of the value
expression logic, rather than the tight coupling between journal innards and
value expressions that occurred in 2.x.
2008-07-29 05:59:38 -04:00

459 lines
13 KiB
C++

/*
* Copyright (c) 2003-2008, John Wiegley. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of New Artisans LLC nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "utils.h"
#include "option.h"
#if defined(HAVE_EXPAT) || defined(HAVE_XMLPARSE)
#include "gnucash.h"
#endif
#include "qif.h"
#include "ofx.h"
#include <ledger.h>
#ifdef HAVE_UNIX_PIPES
#include <sys/types.h>
#include <sys/wait.h>
#include <fdstream.hpp>
#endif
namespace ledger {
value_t register_command(call_scope_t& args)
{
var_t<report_t> report(args, 0);
var_t<std::ostream> ostream(args, 1);
report->transactions_report
(xact_handler_ptr(new format_transactions
(*ostream, report->session.register_format)));
return true;
}
}
static int read_and_report(ledger::report_t& report, int argc, char * argv[],
char * envp[])
{
using namespace ledger;
session_t& session(report.session);
// Handle the command-line arguments
strings_list args;
process_arguments(argc - 1, argv + 1, false, report, args);
if (args.empty()) {
#if 0
help(std::cerr);
#endif
return 1;
}
strings_list::iterator arg = args.begin();
if (! session.cache_file)
session.use_cache = false;
else
session.use_cache = ! session.data_file.empty() && session.price_db;
DEBUG("ledger.session.cache", "1. use_cache = " << session.use_cache);
// Process the environment settings
TRACE_START(environment, 1, "Processed environment variables");
process_environment(const_cast<const char **>(envp), "LEDGER_", report);
TRACE_FINISH(environment, 1);
optional<path> home;
if (const char * home_var = std::getenv("HOME"))
home = home_var;
if (! session.init_file)
session.init_file = home ? *home / ".ledgerrc" : "./.ledgerrc";
if (! session.price_db)
session.price_db = home ? *home / ".pricedb" : "./.pricedb";
if (! session.cache_file)
session.cache_file = home ? *home / ".ledger-cache" : "./.ledger-cache";
if (session.data_file == *session.cache_file)
session.use_cache = false;
DEBUG("ledger.session.cache", "2. use_cache = " << session.use_cache);
INFO("Initialization file is " << session.init_file->string());
INFO("Price database is " << session.price_db->string());
INFO("Binary cache is " << session.cache_file->string());
INFO("Journal file is " << session.data_file.string());
if (! session.use_cache)
INFO("Binary cache mechanism will not be used");
// Configure the output stream
#ifdef HAVE_UNIX_PIPES
int status, pfd[2]; // Pipe file descriptors
#endif
std::ostream * out = &std::cout;
if (report.output_file) {
out = new ofstream(*report.output_file);
}
#ifdef HAVE_UNIX_PIPES
else if (report.pager) {
status = pipe(pfd);
if (status == -1)
throw_(std::logic_error, "Failed to create pipe");
status = fork();
if (status < 0) {
throw_(std::logic_error, "Failed to fork child process");
}
else if (status == 0) { // child
// Duplicate pipe's reading end into stdin
status = dup2(pfd[0], STDIN_FILENO);
if (status == -1)
perror("dup2");
// Close unuseful file descriptors: the pipe's writing and
// reading ends (the latter is not needed anymore, after the
// duplication).
close(pfd[1]);
close(pfd[0]);
// Find command name: its the substring starting right of the
// rightmost '/' character in the pager pathname. See manpage
// for strrchr.
execlp(report.pager->native_file_string().c_str(),
basename(*report.pager).c_str(), (char *)0);
perror("execl");
exit(1);
}
else { // parent
close(pfd[0]);
out = new boost::fdostream(pfd[1]);
}
}
#endif
// Read the command word and create a command object based on it
string verb = *arg++;
if (verb == "parse") {
expr_t expr(*arg);
IF_INFO() {
std::cout << "Value expression tree:" << std::endl;
expr.dump(std::cout);
std::cout << std::endl;
std::cout << "Value expression parsed was:" << std::endl;
expr.print(std::cout, report);
std::cout << std::endl << std::endl;
expr.compile(report);
std::cout << "Value expression after compiling:" << std::endl;
expr.dump(std::cout);
std::cout << std::endl;
std::cout << "Value expression is now:" << std::endl;
expr.print(std::cout, report);
std::cout << std::endl << std::endl;
std::cout << "Result of calculation: ";
}
std::cout << expr.calc(report).strip_annotations() << std::endl;
return 0;
}
// Parse the initialization file, which can only be textual; then
// parse the journal data.
session.read_init();
INFO_START(journal, "Read journal file");
journal_t& journal(*session.create_journal());
std::size_t count = session.read_data(journal, report.account);
if (count == 0)
throw_(parse_error, "Failed to locate any journal entries; "
"did you specify a valid file with -f?");
INFO_FINISH(journal);
INFO("Found " << count << " entries");
TRACE_FINISH(entry_text, 1);
TRACE_FINISH(entry_date, 1);
TRACE_FINISH(entry_details, 1);
TRACE_FINISH(entry_xacts, 1);
TRACE_FINISH(entries, 1);
TRACE_FINISH(parsing_total, 1);
// Are we handling the expr commands? Do so now.
if (verb == "expr") {
expr_t expr(*arg);
IF_INFO() {
*out << "Value expression tree:" << std::endl;
expr.dump(*out);
*out << std::endl;
*out << "Value expression parsed was:" << std::endl;
expr.print(*out, report);
*out << std::endl << std::endl;
*out << "Result of calculation: ";
}
*out << expr.calc(report).strip_annotations() << std::endl;
return 0;
}
// Read the command word and create a command object based on it
function_t command;
if (verb == "register" || verb == "reg" || verb == "r")
command = register_command;
#if 0
else if (verb == "balance" || verb == "bal" || verb == "b")
command = balance_command();
else if (verb == "print" || verb == "p")
command = print_command();
else if (verb == "equity")
command = equity_command();
else if (verb == "entry")
command = entry_command();
else if (verb == "dump")
command = dump_command();
else if (verb == "output")
command = output_command();
else if (verb == "prices")
command = prices_command();
else if (verb == "pricesdb")
command = pricesdb_command();
else if (verb == "csv")
command = csv_command();
else if (verb == "emacs" || verb == "lisp")
command = emacs_command();
else if (verb == "xml")
command = xml_command();
#endif
else if (verb == "expr")
;
else if (verb == "xpath")
;
else {
char buf[128];
std::strcpy(buf, "command_");
std::strcat(buf, verb.c_str());
if (expr_t::ptr_op_t def = report.lookup(buf))
command = def->as_function();
if (! command)
throw_(std::logic_error, string("Unrecognized command '") + verb + "'");
}
// Create an argument scope containing the report command's
// arguments, and then invoke the command.
call_scope_t command_args(report);
command_args.push_back(value_t(&report));
command_args.push_back(value_t(out));
for (strings_list::iterator i = arg; i != args.end(); i++)
command_args.push_back(value_t(*i, true));
INFO_START(command, "Did user command '" << verb << "'");
command(command_args);
INFO_FINISH(command);
// Clean up memory, if it matters
if (DO_VERIFY() && report.output_file)
checked_delete(out);
// Write out the binary cache, if need be
if (session.use_cache && session.cache_dirty && session.cache_file) {
TRACE_START(binary_cache, 1, "Wrote binary journal file");
ofstream stream(*session.cache_file);
journal.write(stream);
TRACE_FINISH(binary_cache, 1);
}
// If the user specified a pager, wait for it to exit now
#ifdef HAVE_UNIX_PIPES
if (! report.output_file && report.pager) {
checked_delete(out);
close(pfd[1]);
// Wait for child to finish
wait(&status);
if (status & 0xffff != 0)
throw_(std::logic_error, "Something went wrong in the pager");
}
#endif
else if (DO_VERIFY() && report.output_file) {
checked_delete(out);
}
return 0;
}
int main(int argc, char * argv[], char * envp[])
{
int status = 1;
for (int i = 1; i < argc; i++)
if (argv[i][0] == '-') {
if (std::strcmp(argv[i], "--verify") == 0) {
#if defined(VERIFY_ON)
ledger::verify_enabled = true;
#endif
}
else if (std::strcmp(argv[i], "--verbose") == 0 ||
std::strcmp(argv[i], "-v") == 0) {
#if defined(LOGGING_ON)
ledger::_log_level = ledger::LOG_INFO;
#endif
}
else if (i + 1 < argc && std::strcmp(argv[i], "--debug") == 0) {
#if defined(DEBUG_ON)
ledger::_log_level = ledger::LOG_DEBUG;
ledger::_log_category = argv[i + 1];
i++;
#endif
}
else if (i + 1 < argc && std::strcmp(argv[i], "--trace") == 0) {
#if defined(TRACING_ON)
ledger::_log_level = ledger::LOG_TRACE;
try {
ledger::_trace_level = boost::lexical_cast<int>(argv[i + 1]);
}
catch (const boost::bad_lexical_cast& e) {
std::cerr << "Argument to --trace must be an integer."
<< std::endl;
return 1;
}
i++;
#endif
}
}
IF_VERIFY()
ledger::initialize_memory_tracing();
try {
std::ios::sync_with_stdio(false);
boost::filesystem::path::default_name_check
(boost::filesystem::portable_posix_name);
INFO("Ledger starting");
std::auto_ptr<ledger::session_t> session(new ledger::session_t);
ledger::set_session_context(session.get());
session->register_parser(new ledger::journal_t::binary_parser_t);
#if defined(HAVE_EXPAT) || defined(HAVE_XMLPARSE)
session->register_parser(new ledger::xml_parser_t);
session->register_parser(new ledger::gnucash_parser_t);
#endif
#ifdef HAVE_LIBOFX
session->register_parser(new ledger::ofx_parser_t);
#endif
session->register_parser(new ledger::qif_parser_t);
session->register_parser(new ledger::textual_parser_t);
std::auto_ptr<ledger::report_t> report(new ledger::report_t(*session.get()));
status = read_and_report(*report.get(), argc, argv, envp);
if (DO_VERIFY()) {
ledger::set_session_context();
} else {
report.release();
session.release();
}
}
catch (ledger::error * err) {
std::cout.flush();
// Push a null here since there's no file context
if (err->context.empty() ||
! dynamic_cast<ledger::xact_context *>(err->context.front()))
err->context.push_front(new ledger::error_context(""));
err->reveal_context(std::cerr, "Error");
std::cerr << err->what() << std::endl;
ledger::checked_delete(err);
}
catch (ledger::fatal * err) {
std::cout.flush();
// Push a null here since there's no file context
if (err->context.empty() ||
! dynamic_cast<ledger::xact_context *>(err->context.front()))
err->context.push_front(new ledger::error_context(""));
err->reveal_context(std::cerr, "Fatal");
std::cerr << err->what() << std::endl;
ledger::checked_delete(err);
}
catch (const std::exception& err) {
std::cout.flush();
std::cerr << "Exception: " << err.what() << std::endl;
}
catch (int _status) {
status = _status;
}
IF_VERIFY() {
INFO("Ledger ended (Boost/libstdc++ may still hold memory)");
ledger::shutdown_memory_tracing();
} else {
INFO("Ledger ended");
}
return status;
}
// main.cc ends here.