path: root/camel/camel-folder-summary.h

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 *  Copyright (C) 2000 Ximian Inc.
 *
 *  Authors: Michael Zucchi <notzed@ximian.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

#ifndef _CAMEL_FOLDER_SUMMARY_H
#define _CAMEL_FOLDER_SUMMARY_H

#ifdef __cplusplus
extern "C" {
#pragma }
#endif /* __cplusplus */

#include <stdio.h>
#include <time.h>
#include <camel/camel-mime-parser.h>
#include <camel/camel-object.h>
#include <camel/camel-index.h>

struct _CamelFolder;

#define CAMEL_FOLDER_SUMMARY_TYPE         camel_folder_summary_get_type ()
#define CAMEL_FOLDER_SUMMARY(obj)         CAMEL_CHECK_CAST (obj, camel_folder_summary_get_type (), CamelFolderSummary)
#define CAMEL_FOLDER_SUMMARY_CLASS(klass) CAMEL_CHECK_CLASS_CAST (klass, camel_folder_summary_get_type (), CamelFolderSummaryClass)
#define CAMEL_IS_FOLDER_SUMMARY(obj)      CAMEL_CHECK_TYPE (obj, camel_folder_summary_get_type ())

/*typedef struct _CamelFolderSummary      CamelFolderSummary;*/
typedef struct _CamelFolderSummaryClass CamelFolderSummaryClass;

typedef struct _CamelMessageInfo CamelMessageInfo;
typedef struct _CamelMessageInfoBase CamelMessageInfoBase;

/* A tree of message content info structures
   describe the content structure of the message (if it has any) */
struct _CamelMessageContentInfo {
    struct _CamelMessageContentInfo *next;
    
    struct _CamelMessageContentInfo *childs;
    struct _CamelMessageContentInfo *parent;
    
    CamelContentType *type;
    char *id;
    char *description;
    char *encoding;     /* this should be an enum?? */
    guint32 size;
};

/* system flag bits */
enum _CamelMessageFlags {
    CAMEL_MESSAGE_ANSWERED = 1<<0,
    CAMEL_MESSAGE_DELETED = 1<<1,
    CAMEL_MESSAGE_DRAFT = 1<<2,
    CAMEL_MESSAGE_FLAGGED = 1<<3,
    CAMEL_MESSAGE_SEEN = 1<<4,
    
    /* these aren't really system flag bits, but are convenience flags */
    CAMEL_MESSAGE_ATTACHMENTS = 1<<5,
    CAMEL_MESSAGE_ANSWERED_ALL = 1<<6,
    CAMEL_MESSAGE_JUNK = 1<<7,
    CAMEL_MESSAGE_SECURE = 1<<8,
    
    /* following flags are for the folder, and are not really permanent flags */
    CAMEL_MESSAGE_FOLDER_FLAGGED = 1<<16, /* for use by the folder implementation */

    /* flags after 1<<16 are used by camel providers,
           if adding non permanent flags, add them to the end  */

    CAMEL_MESSAGE_JUNK_LEARN = 1<<30, /* used when setting CAMEL_MESSAGE_JUNK flag
                         to say that we request junk plugin
                         to learn that message as junk/non junk */
    CAMEL_MESSAGE_USER = 1<<31 /* supports user flags */
};
/* Changes to system flags will NOT trigger a folder changed event */
#define CAMEL_MESSAGE_SYSTEM_MASK (0xffff << 16)

typedef struct _CamelFlag {
    struct _CamelFlag *next;
    char name[1];       /* name allocated as part of the structure */
} CamelFlag;

typedef struct _CamelTag {
    struct _CamelTag *next;
    char *value;
    char name[1];       /* name allocated as part of the structure */
} CamelTag;

/* a summary messageid is a 64 bit identifier (partial md5 hash) */
typedef struct _CamelSummaryMessageID {
    union {
        guint64 id;
        unsigned char hash[8];
        struct {
            guint32 hi;
            guint32 lo;
        } part;
    } id;
} CamelSummaryMessageID;

/* summary references is a fixed size array of references */
typedef struct _CamelSummaryReferences {
    int size;
    CamelSummaryMessageID references[1];
} CamelSummaryReferences;

/* accessor id's */
enum {
    CAMEL_MESSAGE_INFO_SUBJECT,
    CAMEL_MESSAGE_INFO_FROM,
    CAMEL_MESSAGE_INFO_TO,
    CAMEL_MESSAGE_INFO_CC,
    CAMEL_MESSAGE_INFO_MLIST,

    CAMEL_MESSAGE_INFO_FLAGS,
    CAMEL_MESSAGE_INFO_SIZE,

    CAMEL_MESSAGE_INFO_DATE_SENT,
    CAMEL_MESSAGE_INFO_DATE_RECEIVED,

    CAMEL_MESSAGE_INFO_MESSAGE_ID,
    CAMEL_MESSAGE_INFO_REFERENCES,
    CAMEL_MESSAGE_INFO_USER_FLAGS,
    CAMEL_MESSAGE_INFO_USER_TAGS,

    CAMEL_MESSAGE_INFO_LAST
};

/* information about a given message, use accessors */
struct _CamelMessageInfo {
    CamelFolderSummary *summary;

    guint32 refcount;   /* ??? */
    char *uid;
};

/* For classes wishing to do the provided i/o, or for anonymous users,
 * they must subclass or use this messageinfo structure */
/* Otherwise they can do their own thing entirely */
struct _CamelMessageInfoBase {
    CamelFolderSummary *summary;

    guint32 refcount;   /* ??? */
    char *uid;

    const char *subject;
    const char *from;
    const char *to;
    const char *cc;
    const char *mlist;

    guint32 flags;
    guint32 size;

    time_t date_sent;
    time_t date_received;

    CamelSummaryMessageID message_id;
    CamelSummaryReferences *references;/* from parent to root */

    struct _CamelFlag *user_flags;
    struct _CamelTag *user_tags;

    /* tree of content description - NULL if it is not available */
    CamelMessageContentInfo *content;
};

/* probably do this as well, removing CamelFolderChangeInfo and interfaces 
typedef struct _CamelChangeInfo CamelChangeInfo;
struct _CamelChangeInfo {
    GPtrArray *added;
    GPtrArray *removed;
    GPtrArray *changed;
    GPtrArray *recent;
};
*/

enum _CamelFolderSummaryFlags {
    CAMEL_SUMMARY_DIRTY = 1<<0,
};

struct _CamelFolderSummary {
    CamelObject parent;

    struct _CamelFolderSummaryPrivate *priv;

    /* header info */
    guint32 version;    /* version of file loaded/loading */
    guint32 flags;      /* flags */
    guint32 nextuid;    /* next uid? */
    time_t time;        /* timestamp for this summary (for implementors to use) */
    guint32 saved_count;    /* how many were saved/loaded */
    guint32 unread_count;   /* handy totals */
    guint32 deleted_count;
    guint32 junk_count;

    /* sizes of memory objects */
    guint32 message_info_size;
    guint32 content_info_size;

    /* memory allocators (setup automatically) */
    struct _EMemChunk *message_info_chunks;
    struct _EMemChunk *content_info_chunks;

    char *summary_path;
    gboolean build_content; /* do we try and parse/index the content, or not? */

    GPtrArray *messages;    /* CamelMessageInfo's */
    GHashTable *messages_uid; /* CamelMessageInfo's by uid */

    struct _CamelFolder *folder; /* parent folder, for events */
};

struct _CamelFolderSummaryClass {
    CamelObjectClass parent_class;

    /* load/save the global info */
    int (*summary_header_load)(CamelFolderSummary *, FILE *);
    int (*summary_header_save)(CamelFolderSummary *, FILE *);

    /* create/save/load an individual message info */
    CamelMessageInfo * (*message_info_new_from_header)(CamelFolderSummary *, struct _camel_header_raw *);
    CamelMessageInfo * (*message_info_new_from_parser)(CamelFolderSummary *, CamelMimeParser *);
    CamelMessageInfo * (*message_info_new_from_message)(CamelFolderSummary *, CamelMimeMessage *);
    CamelMessageInfo * (*message_info_load)(CamelFolderSummary *, FILE *);
    int        (*message_info_save)(CamelFolderSummary *, FILE *, CamelMessageInfo *);

    void           (*message_info_free)(CamelFolderSummary *, CamelMessageInfo *);
    CamelMessageInfo * (*message_info_clone)(CamelFolderSummary *, const CamelMessageInfo *);

    /* save/load individual content info's */
    CamelMessageContentInfo * (*content_info_new_from_header)(CamelFolderSummary *, struct _camel_header_raw *);
    CamelMessageContentInfo * (*content_info_new_from_parser)(CamelFolderSummary *, CamelMimeParser *);
    CamelMessageContentInfo * (*content_info_new_from_message)(CamelFolderSummary *, CamelMimePart *);
    CamelMessageContentInfo * (*content_info_load)(CamelFolderSummary *, FILE *);
    int               (*content_info_save)(CamelFolderSummary *, FILE *, CamelMessageContentInfo *);
    void                  (*content_info_free)(CamelFolderSummary *, CamelMessageContentInfo *);

    /* get the next uid */
    char *(*next_uid_string)(CamelFolderSummary *);

    /* virtual accessors on messageinfo's */
    const void *(*info_ptr)(const CamelMessageInfo *mi, int id);
    guint32     (*info_uint32)(const CamelMessageInfo *mi, int id);
    time_t      (*info_time)(const CamelMessageInfo *mi, int id);

    gboolean    (*info_user_flag)(const CamelMessageInfo *mi, const char *id);
    const char *(*info_user_tag)(const CamelMessageInfo *mi, const char *id);

    /* set accessors for the modifyable bits */
#if 0
    void (*info_set_ptr)(CamelMessageInfo *mi, int id, const void *val);
    void (*info_set_uint32)(CamelMessageInfo *mi, int id, guint32 val);
    void (*info_set_time)(CamelMessageInfo *mi, int id, time_t val);
    void (*info_set_references)(CamelMessageInfo *mi, CamelSummaryReferences *);
#endif
    gboolean (*info_set_user_flag)(CamelMessageInfo *mi, const char *id, gboolean state);
    gboolean (*info_set_user_tag)(CamelMessageInfo *mi, const char *id, const char *val);
    gboolean (*info_set_flags)(CamelMessageInfo *mi, guint32 mask, guint32 set);
};

CamelType            camel_folder_summary_get_type  (void);
CamelFolderSummary      *camel_folder_summary_new   (struct _CamelFolder *folder);

void camel_folder_summary_set_filename(CamelFolderSummary *, const char *);
void camel_folder_summary_set_index(CamelFolderSummary *, CamelIndex *);
void camel_folder_summary_set_build_content(CamelFolderSummary *, gboolean state);

guint32  camel_folder_summary_next_uid        (CamelFolderSummary *s);
char    *camel_folder_summary_next_uid_string (CamelFolderSummary *s);
void     camel_folder_summary_set_uid         (CamelFolderSummary *s, guint32 uid);

/* load/save the summary in its entirety */
int camel_folder_summary_load(CamelFolderSummary *);
int camel_folder_summary_save(CamelFolderSummary *);

/* only load the header */
int camel_folder_summary_header_load(CamelFolderSummary *);

/* set the dirty bit on the summary */
void camel_folder_summary_touch(CamelFolderSummary *s);

/* add a new raw summary item */
void camel_folder_summary_add(CamelFolderSummary *, CamelMessageInfo *info);

/* build/add raw summary items */
CamelMessageInfo *camel_folder_summary_add_from_header(CamelFolderSummary *, struct _camel_header_raw *);
CamelMessageInfo *camel_folder_summary_add_from_parser(CamelFolderSummary *, CamelMimeParser *);
CamelMessageInfo *camel_folder_summary_add_from_message(CamelFolderSummary *, CamelMimeMessage *);

/* Just build raw summary items */
CamelMessageInfo *camel_folder_summary_info_new_from_header(CamelFolderSummary *, struct _camel_header_raw *);
CamelMessageInfo *camel_folder_summary_info_new_from_parser(CamelFolderSummary *, CamelMimeParser *);
CamelMessageInfo *camel_folder_summary_info_new_from_message(CamelFolderSummary *, CamelMimeMessage *);

CamelMessageContentInfo *camel_folder_summary_content_info_new(CamelFolderSummary *s);
void camel_folder_summary_content_info_free(CamelFolderSummary *s, CamelMessageContentInfo *ci);

/* removes a summary item, doesn't fix content offsets */
void camel_folder_summary_remove(CamelFolderSummary *s, CamelMessageInfo *info);
void camel_folder_summary_remove_uid(CamelFolderSummary *s, const char *uid);
void camel_folder_summary_remove_index(CamelFolderSummary *s, int);
void camel_folder_summary_remove_range(CamelFolderSummary *s, int start, int end);

/* remove all items */
void camel_folder_summary_clear(CamelFolderSummary *s);

/* lookup functions */
int camel_folder_summary_count(CamelFolderSummary *);
CamelMessageInfo *camel_folder_summary_index(CamelFolderSummary *, int);
CamelMessageInfo *camel_folder_summary_uid(CamelFolderSummary *, const char *uid);
GPtrArray *camel_folder_summary_array(CamelFolderSummary *s);
void camel_folder_summary_array_free(CamelFolderSummary *s, GPtrArray *array);

/* summary formatting utils */
char *camel_folder_summary_format_address(struct _camel_header_raw *h, const char *name);
char *camel_folder_summary_format_string(struct _camel_header_raw *h, const char *name);

/* basically like strings, but certain keywords can be compressed and de-cased */
int camel_folder_summary_encode_token(FILE *, const char *);
int camel_folder_summary_decode_token(FILE *, char **);

/* message flag operations */
gboolean    camel_flag_get(CamelFlag **list, const char *name);
gboolean    camel_flag_set(CamelFlag **list, const char *name, gboolean state);
gboolean    camel_flag_list_copy(CamelFlag **to, CamelFlag **from);
int     camel_flag_list_size(CamelFlag **list);
void        camel_flag_list_free(CamelFlag **list);

guint32         camel_system_flag (const char *name);
gboolean        camel_system_flag_get (guint32 flags, const char *name);

/* message tag operations */
const char  *camel_tag_get(CamelTag **list, const char *name);
gboolean    camel_tag_set(CamelTag **list, const char *name, const char *value);
gboolean    camel_tag_list_copy(CamelTag **to, CamelTag **from);
int     camel_tag_list_size(CamelTag **list);
void        camel_tag_list_free(CamelTag **list);

/* Summary may be null */
/* Use anonymous pointers to avoid tons of cast crap */
void *camel_message_info_new(CamelFolderSummary *);
void camel_message_info_ref(void *);
CamelMessageInfo *camel_message_info_new_from_header(CamelFolderSummary *, struct _camel_header_raw *header);
void camel_message_info_free(void *);
void *camel_message_info_clone(const void *);

/* accessors */
const void *camel_message_info_ptr(const CamelMessageInfo *mi, int id);
guint32 camel_message_info_uint32(const CamelMessageInfo *mi, int id);
time_t camel_message_info_time(const CamelMessageInfo *mi, int id);

#define camel_message_info_uid(mi) ((const char *)((const CamelMessageInfo *)mi)->uid)

#define camel_message_info_subject(mi) ((const char *)camel_message_info_ptr((const CamelMessageInfo *)mi, CAMEL_MESSAGE_INFO_SUBJECT))
#define camel_message_info_from(mi) ((const char *)camel_message_info_ptr((const CamelMessageInfo *)mi, CAMEL_MESSAGE_INFO_FROM))
#define camel_message_info_to(mi) ((const char *)camel_message_info_ptr((const CamelMessageInfo *)mi, CAMEL_MESSAGE_INFO_TO))
#define camel_message_info_cc(mi) ((const char *)camel_message_info_ptr((const CamelMessageInfo *)mi, CAMEL_MESSAGE_INFO_CC))
#define camel_message_info_mlist(mi) ((const char *)camel_message_info_ptr((const CamelMessageInfo *)mi, CAMEL_MESSAGE_INFO_MLIST))

#define camel_message_info_flags(mi) camel_message_info_uint32((const CamelMessageInfo *)mi, CAMEL_MESSAGE_INFO_FLAGS)
#define camel_message_info_size(mi) camel_message_info_uint32((const CamelMessageInfo *)mi, CAMEL_MESSAGE_INFO_SIZE)

#define camel_message_info_date_sent(mi) camel_message_info_time((const CamelMessageInfo *)mi, CAMEL_MESSAGE_INFO_DATE_SENT)
#define camel_message_info_date_received(mi) camel_message_info_time((const CamelMessageInfo *)mi, CAMEL_MESSAGE_INFO_DATE_RECEIVED)

#define camel_message_info_message_id(mi) ((const CamelSummaryMessageID *)camel_message_info_ptr((const CamelMessageInfo *)mi, CAMEL_MESSAGE_INFO_MESSAGE_ID))
#define camel_message_info_references(mi) ((const CamelSummaryReferences *)camel_message_info_ptr((const CamelMessageInfo *)mi, CAMEL_MESSAGE_INFO_REFERENCES))
#define camel_message_info_user_flags(mi) ((const CamelFlag *)camel_message_info_ptr((const CamelMessageInfo *)mi, CAMEL_MESSAGE_INFO_USER_FLAGS))
#define camel_message_info_user_tags(mi) ((const CamelTag *)camel_message_info_ptr((const CamelMessageInfo *)mi, CAMEL_MESSAGE_INFO_USER_TAGS))

gboolean camel_message_info_user_flag(const CamelMessageInfo *mi, const char *id);
const char *camel_message_info_user_tag(const CamelMessageInfo *mi, const char *id);

gboolean camel_message_info_set_flags(CamelMessageInfo *mi, guint32 mask, guint32 set);
gboolean camel_message_info_set_user_flag(CamelMessageInfo *mi, const char *id, gboolean state);
gboolean camel_message_info_set_user_tag(CamelMessageInfo *mi, const char *id, const char *val);

/* debugging functions */
void camel_content_info_dump (CamelMessageContentInfo *ci, int depth);

void camel_message_info_dump (CamelMessageInfo *mi);

#ifdef __cplusplus
}
#endif /* __cplusplus */

#endif /* ! _CAMEL_FOLDER_SUMMARY_H */