mirror of https://github.com/djcb/mu.git
487 lines
12 KiB
C++
487 lines
12 KiB
C++
/*
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** Copyright (C) 2011-2021 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
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**
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** This program is free software; you can redistribute it and/or modify it
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** under the terms of the GNU General Public License as published by the
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** Free Software Foundation; either version 3, or (at your option) any
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** later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software Foundation,
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** Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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**
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*/
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#include "mu-guile-message.hh"
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#include <libguile.h>
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#include "message/mu-message.hh"
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#include "utils/mu-utils.hh"
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#include <config.h>
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#include <glib-object.h>
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#include <memory>
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wredundant-decls"
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#include <libguile.h>
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#pragma GCC diagnostic pop
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#include "mu-guile.hh"
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#include <mu-store.hh>
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#include <mu-query.hh>
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using namespace Mu;
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/* pseudo field, not in Xapian */
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constexpr auto MU_GUILE_MSG_FIELD_ID_TIMESTAMP = Field::id_size() + 1;
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/* some symbols */
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static SCM SYMB_PRIO_LOW, SYMB_PRIO_NORMAL, SYMB_PRIO_HIGH;
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static std::array<SCM, AllMessageFlagInfos.size()> SYMB_FLAGS;
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static SCM SYMB_CONTACT_TO, SYMB_CONTACT_CC, SYMB_CONTACT_BCC, SYMB_CONTACT_FROM;
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static long MSG_TAG;
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using MessageSPtr = std::unique_ptr<Message>;
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static gboolean
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mu_guile_scm_is_msg(SCM scm)
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{
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return SCM_NIMP(scm) && (long)SCM_CAR(scm) == MSG_TAG;
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}
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static SCM
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message_scm_create(Xapian::Document&& doc)
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{
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/* placement-new */
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void *scm_mem{scm_gc_malloc(sizeof(Message), "msg")};
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Message* msgp = new(scm_mem)Message(std::move(doc));
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SCM_RETURN_NEWSMOB(MSG_TAG, msgp);
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}
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static const Message*
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message_from_scm(SCM msg_smob)
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{
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return reinterpret_cast<Message*>(SCM_CDR(msg_smob));
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}
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static size_t
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message_scm_free(SCM msg_smob)
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{
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if (auto msg = message_from_scm(msg_smob); msg)
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msg->~Message();
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return sizeof(Message);
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}
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static int
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message_scm_print(SCM msg_smob, SCM port, scm_print_state* pstate)
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{
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scm_puts("#<msg ", port);
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if (auto msg = message_from_scm(msg_smob); msg)
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scm_puts(msg->path().c_str(), port);
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scm_puts(">", port);
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return 1;
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}
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struct FlagData {
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Flags flags;
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SCM lst;
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};
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#define MU_GUILE_INITIALIZED_OR_ERROR \
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do { \
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if (!(mu_guile_initialized())) { \
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mu_guile_error(FUNC_NAME, \
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0, \
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"mu not initialized; call mu:initialize", \
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SCM_UNDEFINED); \
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return SCM_UNSPECIFIED; \
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} \
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} while (0)
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static SCM
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get_flags_scm(const Message& msg)
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{
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SCM lst{SCM_EOL};
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const auto flags{msg.flags()};
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for (auto i = 0; i != AllMessageFlagInfos.size(); ++i) {
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const auto& info{AllMessageFlagInfos.at(i)};
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if (any_of(info.flag & flags))
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scm_append_x(scm_list_2(lst, scm_list_1(SYMB_FLAGS.at(i))));
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}
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return lst;
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}
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static SCM
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get_prio_scm(const Message& msg)
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{
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switch (msg.priority()) {
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case Priority::Low: return SYMB_PRIO_LOW;
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case Priority::Normal: return SYMB_PRIO_NORMAL;
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case Priority::High: return SYMB_PRIO_HIGH;
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default: g_return_val_if_reached(SCM_UNDEFINED);
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}
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}
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static SCM
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msg_string_list_field(const Message& msg, Field::Id field_id)
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{
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SCM scmlst{SCM_EOL};
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for (auto&& val: msg.document().string_vec_value(field_id)) {
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SCM item;
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item = scm_list_1(mu_guile_scm_from_string(val));
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scmlst = scm_append_x(scm_list_2(scmlst, item));
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}
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return scmlst;
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}
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static SCM
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msg_contact_list_field(const Message& msg, Field::Id field_id)
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{
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return scm_from_utf8_string(
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to_string(msg.document().contacts_value(field_id)).c_str());
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}
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static SCM
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get_body(const Message& msg, bool html)
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{
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if (const auto body = html ? msg.body_html() : msg.body_text(); body)
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return mu_guile_scm_from_string(*body);
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else
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return SCM_BOOL_F;
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}
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SCM_DEFINE(get_field,
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"mu:c:get-field",
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2,
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0,
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0,
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(SCM MSG, SCM FIELD),
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"Get the field FIELD from message MSG.\n")
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#define FUNC_NAME s_get_field
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{
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SCM_ASSERT(mu_guile_scm_is_msg(MSG), MSG, SCM_ARG1, FUNC_NAME);
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auto msg{message_from_scm(MSG)};
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SCM_ASSERT(msg, MSG, SCM_ARG1, FUNC_NAME);
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SCM_ASSERT(scm_integer_p(FIELD), FIELD, SCM_ARG2, FUNC_NAME);
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const auto field_opt{field_from_number(static_cast<size_t>(scm_to_int(FIELD)))};
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SCM_ASSERT(!!field_opt, FIELD, SCM_ARG2, FUNC_NAME);
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wswitch-enum"
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switch (field_opt->id) {
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case Field::Id::Priority:
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return get_prio_scm(*msg);
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case Field::Id::Flags:
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return get_flags_scm(*msg);
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case Field::Id::BodyText:
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return get_body(*msg, false);
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default:
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break;
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}
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#pragma GCC diagnostic pop
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switch (field_opt->type) {
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case Field::Type::String:
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return mu_guile_scm_from_string(msg->document().string_value(field_opt->id));
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case Field::Type::ByteSize:
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case Field::Type::TimeT:
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case Field::Type::Integer:
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return scm_from_uint(msg->document().integer_value(field_opt->id));
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case Field::Type::StringList:
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return msg_string_list_field(*msg, field_opt->id);
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case Field::Type::ContactList:
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return msg_contact_list_field(*msg, field_opt->id);
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default:
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SCM_ASSERT(0, FIELD, SCM_ARG2, FUNC_NAME);
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}
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return SCM_UNSPECIFIED;
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}
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#undef FUNC_NAME
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static SCM
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contacts_to_list(const Message& msg, Option<Field::Id> field_id)
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{
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SCM list{SCM_EOL};
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const auto contacts{field_id ?
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msg.document().contacts_value(*field_id) :
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msg.all_contacts()};
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for (auto&& contact: contacts) {
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SCM item{scm_list_1(
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scm_cons(mu_guile_scm_from_string(contact.name),
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mu_guile_scm_from_string(contact.email)))};
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list = scm_append_x(scm_list_2(list, item));
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}
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return list;
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}
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SCM_DEFINE(get_contacts,
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"mu:c:get-contacts",
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2,
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0,
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0,
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(SCM MSG, SCM CONTACT_TYPE),
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"Get a list of contact information pairs.\n")
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#define FUNC_NAME s_get_contacts
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{
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SCM list;
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MU_GUILE_INITIALIZED_OR_ERROR;
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SCM_ASSERT(mu_guile_scm_is_msg(MSG), MSG, SCM_ARG1, FUNC_NAME);
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auto msg{message_from_scm(MSG)};
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SCM_ASSERT(msg, MSG, SCM_ARG1, FUNC_NAME);
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SCM_ASSERT(scm_symbol_p(CONTACT_TYPE) || scm_is_bool(CONTACT_TYPE),
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CONTACT_TYPE,
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SCM_ARG2,
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FUNC_NAME);
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if (CONTACT_TYPE == SCM_BOOL_F)
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return SCM_UNSPECIFIED; /* nothing to do */
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Option<Field::Id> field_id;
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if (CONTACT_TYPE == SCM_BOOL_T)
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field_id = {}; /* get all */
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else {
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if (scm_is_eq(CONTACT_TYPE, SYMB_CONTACT_TO))
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field_id = Field::Id::To;
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else if (scm_is_eq(CONTACT_TYPE, SYMB_CONTACT_CC))
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field_id = Field::Id::Cc;
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else if (scm_is_eq(CONTACT_TYPE, SYMB_CONTACT_BCC))
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field_id = Field::Id::Bcc;
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else if (scm_is_eq(CONTACT_TYPE, SYMB_CONTACT_FROM))
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field_id = Field::Id::From;
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else {
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mu_guile_error(FUNC_NAME, 0, "invalid contact type", SCM_UNDEFINED);
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return SCM_UNSPECIFIED;
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}
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}
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wcast-function-type"
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list = contacts_to_list(*msg, field_id);
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#pragma GCC diagnostic pop
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/* explicitly close the file backend, so we won't run out of fds */
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return list;
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}
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#undef FUNC_NAME
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SCM_DEFINE(get_parts,
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"mu:c:get-parts",
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1,
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1,
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0,
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(SCM MSG, SCM ATTS_ONLY),
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"Get the list of mime-parts for MSG. If ATTS_ONLY is #t, only"
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"get parts that are (look like) attachments. The resulting list has "
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"elements which are list of the form (index name mime-type size).\n")
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#define FUNC_NAME s_get_parts
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{
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MU_GUILE_INITIALIZED_OR_ERROR;
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SCM_ASSERT(mu_guile_scm_is_msg(MSG), MSG, SCM_ARG1, FUNC_NAME);
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auto msg{message_from_scm(MSG)};
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SCM_ASSERT(msg, MSG, SCM_ARG1, FUNC_NAME);
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SCM_ASSERT(scm_is_bool(ATTS_ONLY), ATTS_ONLY, SCM_ARG2, FUNC_NAME);
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SCM attlist = SCM_EOL; /* empty list */
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bool attachments_only = ATTS_ONLY == SCM_BOOL_T ? TRUE : FALSE;
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size_t n{};
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for (auto&& part: msg->parts()) {
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if (attachments_only && !part.is_attachment())
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continue;
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const auto mime_type{part.mime_type()};
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const auto filename{part.cooked_filename()};
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SCM elm = scm_list_5(
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/* msg */
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mu_guile_scm_from_string(msg->path().c_str()),
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/* index */
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scm_from_uint(n++),
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/* filename or #f */
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filename ? mu_guile_scm_from_string(*filename) : SCM_BOOL_F,
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/* mime-type */
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mime_type ? mu_guile_scm_from_string(*mime_type) : SCM_BOOL_F,
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/* size */
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part.size() > 0 ? scm_from_uint(part.size()) : SCM_BOOL_F);
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attlist = scm_cons(elm, attlist);
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}
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/* explicitly close the file backend, so we won't run of fds */
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msg->unload_mime_message();
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return attlist;
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}
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#undef FUNC_NAME
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SCM_DEFINE(get_header,
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"mu:c:get-header",
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2,
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0,
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0,
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(SCM MSG, SCM HEADER),
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"Get an arbitrary HEADER from MSG.\n")
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#define FUNC_NAME s_get_header
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{
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MU_GUILE_INITIALIZED_OR_ERROR;
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SCM_ASSERT(mu_guile_scm_is_msg(MSG), MSG, SCM_ARG1, FUNC_NAME);
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auto msg{message_from_scm(MSG)};
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SCM_ASSERT(msg, MSG, SCM_ARG1, FUNC_NAME);
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SCM_ASSERT(scm_is_string(HEADER) || HEADER == SCM_UNDEFINED, HEADER, SCM_ARG2, FUNC_NAME);
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char *header = scm_to_utf8_string(HEADER);
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SCM val = mu_guile_scm_from_string(msg->header(header).value_or(""));
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free(header);
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/* explicitly close the file backend, so we won't run of fds */
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msg->unload_mime_message();
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return val;
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}
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#undef FUNC_NAME
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SCM_DEFINE(for_each_message,
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"mu:c:for-each-message",
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3,
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0,
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0,
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(SCM FUNC, SCM EXPR, SCM MAXNUM),
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"Call FUNC for each msg in the message store matching EXPR. EXPR is"
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"either a string containing a mu search expression or a boolean; in the former "
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"case, limit the messages to only those matching the expression, in the "
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"latter case, match /all/ messages if the EXPR equals #t, and match "
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"none if EXPR equals #f.")
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#define FUNC_NAME s_for_each_message
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{
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char* expr{};
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MU_GUILE_INITIALIZED_OR_ERROR;
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SCM_ASSERT(scm_procedure_p(FUNC), FUNC, SCM_ARG1, FUNC_NAME);
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SCM_ASSERT(scm_is_bool(EXPR) || scm_is_string(EXPR), EXPR, SCM_ARG2, FUNC_NAME);
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SCM_ASSERT(scm_is_integer(MAXNUM), MAXNUM, SCM_ARG3, FUNC_NAME);
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if (EXPR == SCM_BOOL_F)
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return SCM_UNSPECIFIED; /* nothing to do */
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if (EXPR == SCM_BOOL_T)
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expr = strdup("\"\""); /* note, "" matches *all* messages */
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else
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expr = scm_to_utf8_string(EXPR);
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const auto res = mu_guile_store().run_query(expr,{}, {}, scm_to_int(MAXNUM));
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free(expr);
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if (!res)
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return SCM_UNSPECIFIED;
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for (auto&& mi : *res) {
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if (auto xdoc{mi.document()}; xdoc) {
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scm_call_1(FUNC, message_scm_create(std::move(xdoc.value())));
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}
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}
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return SCM_UNSPECIFIED;
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}
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#undef FUNC_NAME
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static SCM
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register_symbol(const char* name)
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{
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SCM scm;
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scm = scm_from_utf8_symbol(name);
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scm_c_define(name, scm);
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scm_c_export(name, NULL);
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return scm;
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}
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static void
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define_symbols(void)
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{
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SYMB_CONTACT_TO = register_symbol("mu:contact:to");
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SYMB_CONTACT_CC = register_symbol("mu:contact:cc");
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SYMB_CONTACT_FROM = register_symbol("mu:contact:from");
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SYMB_CONTACT_BCC = register_symbol("mu:contact:bcc");
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SYMB_PRIO_LOW = register_symbol("mu:prio:low");
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SYMB_PRIO_NORMAL = register_symbol("mu:prio:normal");
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SYMB_PRIO_HIGH = register_symbol("mu:prio:high");
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for (auto i = 0U; i != AllMessageFlagInfos.size(); ++i) {
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const auto& info{AllMessageFlagInfos.at(i)};
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const auto name = "mu:flag:" + std::string{info.name};
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SYMB_FLAGS[i] = register_symbol(name.c_str());
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}
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}
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static void
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define_vars(void)
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{
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field_for_each([](auto&& field){
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auto defvar = [&](auto&& fname, auto&& ffield) {
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const auto name{"mu:field:" + std::string{fname}};
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scm_c_define(name.c_str(), scm_from_uint(field.value_no()));
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scm_c_export(name.c_str(), NULL);
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};
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// define for both name and (if exists) alias.
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if (!field.name.empty())
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defvar(field.name, field);
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if (!field.alias.empty())
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defvar(field.alias, field);
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});
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/* non-Xapian field: timestamp */
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scm_c_define("mu:field:timestamp",
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scm_from_uint(MU_GUILE_MSG_FIELD_ID_TIMESTAMP));
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scm_c_export("mu:field:timestamp", NULL);
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}
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void*
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mu_guile_message_init(void* data)
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{
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MSG_TAG = scm_make_smob_type("message", sizeof(Message));
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scm_set_smob_free(MSG_TAG, message_scm_free);
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scm_set_smob_print(MSG_TAG, message_scm_print);
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define_vars();
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define_symbols();
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#ifndef SCM_MAGIC_SNARFER
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#include "mu-guile-message.x"
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#endif /*SCM_MAGIC_SNARFER*/
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return NULL;
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}
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