mirror of https://github.com/djcb/mu.git
436 lines
11 KiB
C
436 lines
11 KiB
C
/* -*-mode: c; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-*/
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/*
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** Copyright (C) 2008-2011 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
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation; either version 3 of the License, or
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** (at your option) any 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 <string.h>
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#include "mu-msg-fields.h"
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/*
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* note: the differences for our purposes between a xapian field and a
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* term: - there is only a single value for some item in per document
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* (msg), ie. one value containing the list of To: addresses - there
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* can be multiple terms, each containing e.g. one of the To:
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* addresses - searching uses terms, but to display some field, it
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* must be in the value (at least when using MuMsgIter)
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*/
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enum _FieldFlags {
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FLAG_GMIME = 1 << 0, /* field retrieved through
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* gmime */
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FLAG_XAPIAN_INDEX = 1 << 1, /* field is indexed in
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* xapian (i.e., the text
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* is processed */
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FLAG_XAPIAN_TERM = 1 << 2, /* field stored as term in
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* xapian (so it can be searched) */
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FLAG_XAPIAN_VALUE = 1 << 3, /* field stored as value in
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* xapian (so the literal
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* value can be
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* retrieved) */
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FLAG_XAPIAN_CONTACT = 1 << 4, /* field contains one or more
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* e-mail-addresses */
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FLAG_XAPIAN_ESCAPE = 1 << 5, /* field needs escaping for
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* xapian (so the xapian
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* query does not get
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* confused) */
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FLAG_XAPIAN_BOOLEAN = 1 << 6, /* use 'add_boolean_prefix'
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* for Xapian queries;
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* wildcards do NOT WORK
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* for such fields */
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FLAG_XAPIAN_PREFIX_ONLY = 1 << 7, /* whether this fields
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* matches only when the
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* prefix is explicitly
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* included in the search
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* query -- e.g., the text
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* body */
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FLAG_NORMALIZE = 1 << 8, /* field needs flattening for
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* case/accents */
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FLAG_DONT_CACHE = 1 << 9 /* don't cache this field in
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* the MuMsg cache */
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};
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typedef enum _FieldFlags FieldFlags;
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/*
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* this struct describes the fields of an e-mail
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/*/
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struct _MuMsgField {
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MuMsgFieldId _id; /* the id of the field */
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MuMsgFieldType _type; /* the type of the field */
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const char *_name; /* the name of the field */
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const char _shortcut; /* the shortcut for use in
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* --fields and sorting */
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const char _xprefix; /* the Xapian-prefix */
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FieldFlags _flags; /* the flags that tells us
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* what to do */
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};
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typedef struct _MuMsgField MuMsgField;
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/* the name and shortcut fields must be lower case, or they might be
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* misinterpreted by the query-preprocesser which turns queries into
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* lowercase */
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static const MuMsgField FIELD_DATA[] = {
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{
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MU_MSG_FIELD_ID_BCC,
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MU_MSG_FIELD_TYPE_STRING,
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"bcc" , 'h', 'H', /* 'hidden */
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FLAG_GMIME | FLAG_XAPIAN_CONTACT |
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FLAG_XAPIAN_VALUE
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},
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{
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MU_MSG_FIELD_ID_BODY_TEXT,
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MU_MSG_FIELD_TYPE_STRING,
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"body", 'b', 'B',
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FLAG_GMIME | FLAG_XAPIAN_INDEX | FLAG_NORMALIZE |
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FLAG_DONT_CACHE
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},
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{
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MU_MSG_FIELD_ID_BODY_HTML,
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MU_MSG_FIELD_TYPE_STRING,
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"bodyhtml", 'h', 0,
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FLAG_GMIME | FLAG_DONT_CACHE
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},
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{
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MU_MSG_FIELD_ID_CC,
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MU_MSG_FIELD_TYPE_STRING,
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"cc", 'c', 'C',
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FLAG_GMIME | FLAG_XAPIAN_CONTACT | FLAG_XAPIAN_VALUE
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},
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{
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MU_MSG_FIELD_ID_DATE,
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MU_MSG_FIELD_TYPE_TIME_T,
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"date", 'd', 'D',
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FLAG_GMIME | FLAG_XAPIAN_TERM | FLAG_XAPIAN_VALUE |
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FLAG_XAPIAN_BOOLEAN | FLAG_XAPIAN_PREFIX_ONLY
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},
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{
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MU_MSG_FIELD_ID_EMBEDDED_TEXT,
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MU_MSG_FIELD_TYPE_STRING,
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"embed", 'e', 'E',
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FLAG_GMIME | FLAG_XAPIAN_INDEX | FLAG_NORMALIZE |
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FLAG_DONT_CACHE
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},
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{
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MU_MSG_FIELD_ID_FILE,
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MU_MSG_FIELD_TYPE_STRING,
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"file" , 'j', 'J',
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FLAG_GMIME | FLAG_XAPIAN_TERM | FLAG_NORMALIZE |
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FLAG_DONT_CACHE | FLAG_XAPIAN_PREFIX_ONLY
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},
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{
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MU_MSG_FIELD_ID_FLAGS,
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MU_MSG_FIELD_TYPE_INT,
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"flag", 'g', 'G', /* flaGs */
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FLAG_GMIME | FLAG_XAPIAN_TERM | FLAG_XAPIAN_VALUE |
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FLAG_XAPIAN_PREFIX_ONLY
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},
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{
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MU_MSG_FIELD_ID_FROM,
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MU_MSG_FIELD_TYPE_STRING,
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"from", 'f', 'F',
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FLAG_GMIME | FLAG_XAPIAN_CONTACT | FLAG_XAPIAN_VALUE
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},
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{
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MU_MSG_FIELD_ID_PATH,
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MU_MSG_FIELD_TYPE_STRING,
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"path", 'l', 'L', /* 'l' for location */
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FLAG_GMIME | FLAG_XAPIAN_VALUE |
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FLAG_XAPIAN_BOOLEAN | FLAG_XAPIAN_PREFIX_ONLY
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},
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{
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MU_MSG_FIELD_ID_MAILDIR,
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MU_MSG_FIELD_TYPE_STRING,
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"maildir", 'm', 'M',
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FLAG_GMIME | FLAG_XAPIAN_TERM | FLAG_XAPIAN_VALUE |
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FLAG_NORMALIZE | FLAG_XAPIAN_ESCAPE | FLAG_XAPIAN_PREFIX_ONLY
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},
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{
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MU_MSG_FIELD_ID_MIME,
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MU_MSG_FIELD_TYPE_STRING,
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"mime" , 'y', 'Y',
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FLAG_XAPIAN_TERM | FLAG_XAPIAN_ESCAPE | FLAG_XAPIAN_PREFIX_ONLY
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},
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{
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MU_MSG_FIELD_ID_PRIO,
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MU_MSG_FIELD_TYPE_INT,
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"prio", 'p', 'P',
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FLAG_GMIME | FLAG_XAPIAN_TERM | FLAG_XAPIAN_VALUE |
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FLAG_XAPIAN_PREFIX_ONLY
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},
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{
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MU_MSG_FIELD_ID_SIZE,
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MU_MSG_FIELD_TYPE_BYTESIZE,
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"size", 'z', 'Z', /* siZe */
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FLAG_GMIME | FLAG_XAPIAN_TERM | FLAG_XAPIAN_VALUE |
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FLAG_XAPIAN_PREFIX_ONLY
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},
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{
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MU_MSG_FIELD_ID_SUBJECT,
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MU_MSG_FIELD_TYPE_STRING,
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"subject", 's', 'S',
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FLAG_GMIME | FLAG_XAPIAN_INDEX | FLAG_XAPIAN_VALUE |
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FLAG_XAPIAN_TERM | FLAG_NORMALIZE | FLAG_XAPIAN_ESCAPE
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},
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{
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MU_MSG_FIELD_ID_TO,
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MU_MSG_FIELD_TYPE_STRING,
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"to", 't', 'T',
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FLAG_GMIME | FLAG_XAPIAN_CONTACT | FLAG_XAPIAN_VALUE
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},
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{
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MU_MSG_FIELD_ID_MSGID,
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MU_MSG_FIELD_TYPE_STRING,
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"msgid", 'i', 'I', /* 'i' for Id */
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FLAG_GMIME | FLAG_XAPIAN_TERM | FLAG_XAPIAN_VALUE |
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FLAG_XAPIAN_ESCAPE | FLAG_XAPIAN_PREFIX_ONLY
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},
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{
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MU_MSG_FIELD_ID_REFS,
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MU_MSG_FIELD_TYPE_STRING_LIST,
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NULL, 'r', 'R',
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FLAG_GMIME | FLAG_XAPIAN_VALUE | FLAG_XAPIAN_PREFIX_ONLY
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},
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{
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MU_MSG_FIELD_ID_TAGS,
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MU_MSG_FIELD_TYPE_STRING_LIST,
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"tag", 'x', 'X',
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FLAG_GMIME | FLAG_XAPIAN_TERM | FLAG_XAPIAN_PREFIX_ONLY |
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FLAG_NORMALIZE | FLAG_XAPIAN_ESCAPE
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},
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{ /* special, internal field, to get a unique key */
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MU_MSG_FIELD_ID_UID,
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MU_MSG_FIELD_TYPE_STRING,
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"uid", 0, 'U',
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FLAG_XAPIAN_TERM | FLAG_XAPIAN_PREFIX_ONLY
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}
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/* note, mu-store also use the 'Q' internal prefix for its uids */
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};
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/* the MsgField data in an array, indexed by the MsgFieldId;
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* this allows for O(1) access
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*/
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static MuMsgField* _msg_field_data[MU_MSG_FIELD_ID_NUM];
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static const MuMsgField* mu_msg_field (MuMsgFieldId id)
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{
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static gboolean _initialized = FALSE;
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/* initialize the array, but only once... */
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if (G_UNLIKELY(!_initialized)) {
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int i;
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for (i = 0; i != G_N_ELEMENTS(FIELD_DATA); ++i)
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_msg_field_data[FIELD_DATA[i]._id] =
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(MuMsgField*)&FIELD_DATA[i];
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_initialized = TRUE;
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}
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return _msg_field_data[id];
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}
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void
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mu_msg_field_foreach (MuMsgFieldForEachFunc func, gconstpointer data)
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{
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int i;
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for (i = 0; i != MU_MSG_FIELD_ID_NUM; ++i)
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func (i, data);
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}
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MuMsgFieldId
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mu_msg_field_id_from_name (const char* str, gboolean err)
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{
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int i;
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g_return_val_if_fail (str, MU_MSG_FIELD_ID_NONE);
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for (i = 0; i != G_N_ELEMENTS(FIELD_DATA); ++i)
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if (g_strcmp0(str, FIELD_DATA[i]._name) == 0)
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return FIELD_DATA[i]._id;
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if (err)
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g_return_val_if_reached (MU_MSG_FIELD_ID_NONE);
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return MU_MSG_FIELD_ID_NONE;
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}
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MuMsgFieldId
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mu_msg_field_id_from_shortcut (char kar, gboolean err)
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{
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int i;
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for (i = 0; i != G_N_ELEMENTS(FIELD_DATA); ++i)
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if (kar == FIELD_DATA[i]._shortcut)
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return FIELD_DATA[i]._id;
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if (err)
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g_return_val_if_reached (MU_MSG_FIELD_ID_NONE);
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return MU_MSG_FIELD_ID_NONE;
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}
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gboolean
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mu_msg_field_gmime (MuMsgFieldId id)
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{
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g_return_val_if_fail (mu_msg_field_id_is_valid(id),FALSE);
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return mu_msg_field(id)->_flags & FLAG_GMIME ? TRUE: FALSE;
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}
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gboolean
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mu_msg_field_xapian_index (MuMsgFieldId id)
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{
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g_return_val_if_fail (mu_msg_field_id_is_valid(id),FALSE);
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return mu_msg_field(id)->_flags & FLAG_XAPIAN_INDEX ? TRUE: FALSE;
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}
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gboolean
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mu_msg_field_xapian_value (MuMsgFieldId id)
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{
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g_return_val_if_fail (mu_msg_field_id_is_valid(id),FALSE);
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return mu_msg_field(id)->_flags & FLAG_XAPIAN_VALUE ? TRUE: FALSE;
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}
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gboolean
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mu_msg_field_xapian_term (MuMsgFieldId id)
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{
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g_return_val_if_fail (mu_msg_field_id_is_valid(id),FALSE);
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return mu_msg_field(id)->_flags & FLAG_XAPIAN_TERM ? TRUE: FALSE;
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}
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gboolean
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mu_msg_field_uses_boolean_prefix (MuMsgFieldId id)
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{
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g_return_val_if_fail (mu_msg_field_id_is_valid(id),FALSE);
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return mu_msg_field(id)->_flags & FLAG_XAPIAN_BOOLEAN?TRUE:FALSE;
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}
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gboolean
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mu_msg_field_needs_prefix (MuMsgFieldId id)
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{
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g_return_val_if_fail (mu_msg_field_id_is_valid(id),FALSE);
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return mu_msg_field(id)->_flags &
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FLAG_XAPIAN_PREFIX_ONLY ? TRUE: FALSE;
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}
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gboolean
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mu_msg_field_is_cacheable (MuMsgFieldId id)
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{
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g_return_val_if_fail (mu_msg_field_id_is_valid(id),FALSE);
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/* note the FALSE: TRUE */
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return mu_msg_field(id)->_flags & FLAG_DONT_CACHE ? FALSE : TRUE;
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}
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gboolean
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mu_msg_field_xapian_contact (MuMsgFieldId id)
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{
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g_return_val_if_fail (mu_msg_field_id_is_valid(id),FALSE);
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return mu_msg_field(id)->_flags & FLAG_XAPIAN_CONTACT ? TRUE: FALSE;
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}
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gboolean
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mu_msg_field_normalize (MuMsgFieldId id)
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{
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g_return_val_if_fail (mu_msg_field_id_is_valid(id),FALSE);
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return mu_msg_field(id)->_flags & FLAG_NORMALIZE ? TRUE: FALSE;
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}
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gboolean
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mu_msg_field_xapian_escape (MuMsgFieldId id)
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{
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g_return_val_if_fail (mu_msg_field_id_is_valid(id),FALSE);
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return mu_msg_field(id)->_flags & FLAG_XAPIAN_ESCAPE ? TRUE: FALSE;
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}
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gboolean
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mu_msg_field_is_numeric (MuMsgFieldId mfid)
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{
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MuMsgFieldType type;
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g_return_val_if_fail (mu_msg_field_id_is_valid(mfid),FALSE);
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type = mu_msg_field_type (mfid);
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return type == MU_MSG_FIELD_TYPE_BYTESIZE ||
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type == MU_MSG_FIELD_TYPE_TIME_T ||
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type == MU_MSG_FIELD_TYPE_INT;
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}
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const char*
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mu_msg_field_name (MuMsgFieldId id)
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{
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g_return_val_if_fail (mu_msg_field_id_is_valid(id),NULL);
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return mu_msg_field(id)->_name;
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}
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char
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mu_msg_field_shortcut (MuMsgFieldId id)
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{
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g_return_val_if_fail (mu_msg_field_id_is_valid(id),0);
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return mu_msg_field(id)->_shortcut;
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}
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char
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mu_msg_field_xapian_prefix (MuMsgFieldId id)
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{
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g_return_val_if_fail (mu_msg_field_id_is_valid(id),0);
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return mu_msg_field(id)->_xprefix;
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}
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MuMsgFieldType
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mu_msg_field_type (MuMsgFieldId id)
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{
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g_return_val_if_fail (mu_msg_field_id_is_valid(id),
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MU_MSG_FIELD_TYPE_NONE);
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return mu_msg_field(id)->_type;
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}
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