432 lines
11 KiB
C++
432 lines
11 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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#include <system.hh>
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#include "item.h"
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namespace ledger {
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bool item_t::use_effective_date = false;
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bool item_t::has_tag(const string& tag) const
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{
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DEBUG("item.meta", "Checking if item has tag: " << tag);
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if (! metadata) {
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DEBUG("item.meta", "Item has no metadata at all");
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return false;
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}
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string_map::const_iterator i = metadata->find(tag);
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#if defined(DEBUG_ON)
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if (SHOW_DEBUG("item.meta")) {
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if (i == metadata->end())
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DEBUG("item.meta", "Item does not have this tag");
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else
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DEBUG("item.meta", "Item has the tag!");
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}
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#endif
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return i != metadata->end();
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}
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bool item_t::has_tag(const mask_t& tag_mask,
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const optional<mask_t>& value_mask) const
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{
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if (metadata) {
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foreach (const string_map::value_type& data, *metadata) {
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if (tag_mask.match(data.first)) {
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if (! value_mask)
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return true;
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else if (data.second)
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return value_mask->match(*data.second);
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}
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}
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}
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return false;
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}
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optional<string> item_t::get_tag(const string& tag) const
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{
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DEBUG("item.meta", "Getting item tag: " << tag);
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if (metadata) {
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DEBUG("item.meta", "Item has metadata");
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string_map::const_iterator i = metadata->find(tag);
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if (i != metadata->end()) {
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DEBUG("item.meta", "Found the item!");
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return (*i).second;
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}
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}
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return none;
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}
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optional<string> item_t::get_tag(const mask_t& tag_mask,
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const optional<mask_t>& value_mask) const
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{
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if (metadata) {
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foreach (const string_map::value_type& data, *metadata) {
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if (tag_mask.match(data.first) &&
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(! value_mask ||
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(data.second && value_mask->match(*data.second))))
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return data.second;
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}
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}
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return none;
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}
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void item_t::set_tag(const string& tag,
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const optional<string>& value)
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{
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if (! metadata)
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metadata = string_map();
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DEBUG("item.meta", "Setting tag '" << tag << "' to value '"
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<< (value ? *value : string("<none>")) << "'");
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std::pair<string_map::iterator, bool> result
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= metadata->insert(string_map::value_type(tag, value));
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assert(result.second);
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}
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void item_t::parse_tags(const char * p, optional<date_t::year_type> current_year)
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{
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if (const char * b = std::strchr(p, '[')) {
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if (const char * e = std::strchr(p, ']')) {
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char buf[256];
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std::strncpy(buf, b + 1, e - b - 1);
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buf[e - b - 1] = '\0';
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if (char * p = std::strchr(buf, '=')) {
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*p++ = '\0';
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_date_eff = parse_date(p, current_year);
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}
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if (buf[0])
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_date = parse_date(buf, current_year);
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}
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}
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if (! std::strchr(p, ':'))
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return;
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scoped_array<char> buf(new char[std::strlen(p) + 1]);
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std::strcpy(buf.get(), p);
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string tag;
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for (char * q = std::strtok(buf.get(), " \t");
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q;
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q = std::strtok(NULL, " \t")) {
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const string::size_type len = std::strlen(q);
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if (! tag.empty()) {
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if (! has_tag(tag))
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set_tag(tag, string(p + (q - buf.get())));
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break;
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}
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else if (q[0] == ':' && q[len - 1] == ':') { // a series of tags
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for (char * r = std::strtok(q + 1, ":");
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r;
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r = std::strtok(NULL, ":"))
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set_tag(r);
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}
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else if (q[len - 1] == ':') { // a metadata setting
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tag = string(q, len - 1);
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}
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}
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}
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void item_t::append_note(const char * p, optional<date_t::year_type> current_year)
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{
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if (note) {
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*note += '\n';
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*note += p;
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} else {
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note = p;
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}
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parse_tags(p, current_year);
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}
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namespace {
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value_t get_status(item_t& item) {
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return long(item.state());
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}
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value_t get_uncleared(item_t& item) {
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return item.state() == item_t::UNCLEARED;
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}
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value_t get_cleared(item_t& item) {
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return item.state() == item_t::CLEARED;
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}
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value_t get_pending(item_t& item) {
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return item.state() == item_t::PENDING;
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}
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value_t get_actual(item_t& item) {
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return ! item.has_flags(ITEM_GENERATED);
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}
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value_t get_date(item_t& item) {
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return item.date();
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}
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value_t get_effective_date(item_t& item) {
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if (optional<date_t> effective = item.effective_date())
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return *effective;
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return NULL_VALUE;
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}
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value_t get_note(item_t& item) {
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return string_value(item.note ? *item.note : empty_string);
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}
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value_t has_tag(call_scope_t& args) {
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item_t& item(find_scope<item_t>(args));
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if (args.size() == 1) {
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if (args[0].is_string())
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return item.has_tag(args[0].as_string());
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else if (args[0].is_mask())
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return item.has_tag(args[0].as_mask());
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} else {
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return item.has_tag(args[0].to_mask(), args[1].to_mask());
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}
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return false;
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}
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value_t get_tag(call_scope_t& args) {
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item_t& item(find_scope<item_t>(args));
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if (optional<string> value = item.get_tag(args[0].as_string()))
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return string_value(*value);
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return false;
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}
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value_t get_pathname(item_t& item) {
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return string_value(item.pathname.string());
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}
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value_t get_beg_pos(item_t& item) {
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return long(item.beg_pos);
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}
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value_t get_beg_line(item_t& item) {
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return long(item.beg_line);
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}
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value_t get_end_pos(item_t& item) {
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return long(item.end_pos);
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}
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value_t get_end_line(item_t& item) {
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return long(item.end_line);
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}
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value_t get_depth(item_t&) {
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return 0L;
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}
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value_t ignore(item_t&) {
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return false;
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}
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template <value_t (*Func)(item_t&)>
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value_t get_wrapper(call_scope_t& scope) {
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return (*Func)(find_scope<item_t>(scope));
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}
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}
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value_t get_comment(item_t& item)
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{
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if (! item.note) {
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return string_value("");
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} else {
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std::ostringstream buf;
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if (item.note->length() > 15)
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buf << "\n ;";
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else
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buf << " ;";
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bool need_separator = false;
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for (const char * p = item.note->c_str(); *p; p++) {
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if (*p == '\n') {
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need_separator = true;
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} else {
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if (need_separator) {
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buf << "\n ;";
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need_separator = false;
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}
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buf << *p;
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}
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}
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return string_value(buf.str());
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}
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}
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expr_t::ptr_op_t item_t::lookup(const string& name)
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{
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switch (name[0]) {
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case 'a':
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if (name == "actual")
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return WRAP_FUNCTOR(get_wrapper<&get_actual>);
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break;
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case 'b':
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if (name == "beg_line")
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return WRAP_FUNCTOR(get_wrapper<&get_beg_line>);
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else if (name == "beg_pos")
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return WRAP_FUNCTOR(get_wrapper<&get_beg_pos>);
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break;
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case 'c':
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if (name == "cleared")
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return WRAP_FUNCTOR(get_wrapper<&get_cleared>);
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else if (name == "comment")
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return WRAP_FUNCTOR(get_wrapper<&get_comment>);
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break;
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case 'd':
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if (name[1] == '\0' || name == "date")
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return WRAP_FUNCTOR(get_wrapper<&get_date>);
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else if (name == "depth")
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return WRAP_FUNCTOR(get_wrapper<&get_depth>);
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break;
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case 'e':
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if (name == "end_line")
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return WRAP_FUNCTOR(get_wrapper<&get_end_line>);
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else if (name == "end_pos")
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return WRAP_FUNCTOR(get_wrapper<&get_end_pos>);
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else if (name == "effective_date")
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return WRAP_FUNCTOR(get_wrapper<&get_effective_date>);
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break;
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case 'f':
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if (name == "filename")
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return WRAP_FUNCTOR(get_wrapper<&get_pathname>);
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break;
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case 'h':
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if (name == "has_tag")
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return WRAP_FUNCTOR(ledger::has_tag);
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else if (name == "has_meta")
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return WRAP_FUNCTOR(ledger::has_tag);
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break;
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case 'i':
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if (name == "is_account")
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return WRAP_FUNCTOR(get_wrapper<&ignore>);
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break;
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case 'm':
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if (name == "meta")
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return WRAP_FUNCTOR(ledger::get_tag);
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break;
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case 'n':
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if (name == "note")
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return WRAP_FUNCTOR(get_wrapper<&get_note>);
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break;
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case 'p':
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if (name == "pending")
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return WRAP_FUNCTOR(get_wrapper<&get_pending>);
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else if (name == "parent")
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return WRAP_FUNCTOR(get_wrapper<&ignore>);
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break;
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case 's':
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if (name == "status")
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return WRAP_FUNCTOR(get_wrapper<&get_status>);
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break;
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case 't':
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if (name == "tag")
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return WRAP_FUNCTOR(ledger::get_tag);
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break;
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case 'u':
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if (name == "uncleared")
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return WRAP_FUNCTOR(get_wrapper<&get_uncleared>);
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break;
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case 'X':
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if (name[1] == '\0')
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return WRAP_FUNCTOR(get_wrapper<&get_cleared>);
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break;
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case 'Y':
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if (name[1] == '\0')
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return WRAP_FUNCTOR(get_wrapper<&get_pending>);
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break;
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}
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return NULL;
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}
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bool item_t::valid() const
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{
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if (_state != UNCLEARED && _state != CLEARED && _state != PENDING) {
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DEBUG("ledger.validate", "item_t: state is bad");
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return false;
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}
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return true;
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}
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void print_item(std::ostream& out, const item_t& item, const string& prefix)
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{
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out << source_context(item.pathname, item.beg_pos, item.end_pos, prefix);
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}
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string item_context(const item_t& item, const string& desc)
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{
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std::streamoff len = item.end_pos - item.beg_pos;
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if (! len)
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return _("<no item context>");
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assert(len > 0);
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assert(len < 2048);
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std::ostringstream out;
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if (item.pathname == path("/dev/stdin")) {
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out << desc << _(" from standard input:");
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return out.str();
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}
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out << desc << _(" from \"") << item.pathname.string() << "\"";
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if (item.beg_line != item.end_line)
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out << _(", lines ") << item.beg_line << "-"
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<< item.end_line << ":\n";
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else
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out << _(", line ") << item.beg_line << ":\n";
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print_item(out, item, "> ");
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return out.str();
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}
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} // namespace ledger
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