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

/*
 *  Copyright (C) 2000 Helix Code Inc.
 *
 *  Authors: Michael Zucchi <notzed@helixcode.com>
 *
 *  This program is free software; you can redistribute it and/or 
 *  modify it under the terms of the GNU General Public License as 
 *  published by the Free Software Foundation; either version 2 of the
 *  License, or (at your option) any later version.
 *
 *  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

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

#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 IS_CAMEL_FOLDER_SUMMARY(obj)      CAMEL_CHECK_TYPE (obj, camel_folder_summary_get_type ())

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

/* A tree of message content info structures
   describe the content structure of the message (if it has any) */
typedef struct _CamelMessageContentInfo {
    struct _CamelMessageContentInfo *next;

    struct _CamelMessageContentInfo *childs;
    struct _CamelMessageContentInfo *parent;

    struct _header_content_type *type;
    char *id;
    char *description;
    char *encoding;
} CamelMessageContentInfo;

/* 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,
    CAMEL_MESSAGE_ATTACHMENTS = 1<<5,

    /* following flags are for the folder, and are not really permanent flags */
    CAMEL_MESSAGE_FOLDER_FLAGGED = 1<<16, /* for use by the folder implementation */
    CAMEL_MESSAGE_USER = 1<<31 /* supports user flags */
};

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;

#define DOESTRV

#ifdef DOESTRV
/* string array indices */
enum {
    CAMEL_MESSAGE_INFO_UID,
    CAMEL_MESSAGE_INFO_SUBJECT,
    CAMEL_MESSAGE_INFO_FROM,
    CAMEL_MESSAGE_INFO_TO,
    CAMEL_MESSAGE_INFO_CC,
    CAMEL_MESSAGE_INFO_LAST,
};
#endif

/* information about a given object */
typedef struct {
    /* public fields */
#ifdef DOESTRV
    struct _EStrv *strings;     /* all strings packed into a single compact array */
#else
    gchar *subject;
    gchar *from;
    gchar *to;
    gchar *cc;

    gchar *uid;
#endif
    guint32 flags;
    guint32 size;

    time_t date_sent;
    time_t date_received;

    CamelSummaryMessageID message_id;/* for this message */
    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;
} CamelMessageInfo;

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

struct _CamelFolderSummary {
    CamelObject parent;

    struct _CamelFolderSummaryPrivate *priv;

    /* header info */
    guint32 version;    /* version of file required, should be set by implementors */
    guint32 flags;      /* flags */
    guint32 nextuid;    /* next uid? */
    guint32 saved_count;    /* how many were saved/loaded */
    time_t time;        /* timestamp for this summary (for implementors to use) */

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

#ifdef DOESTRV
    guint32 message_info_strings;
#endif  
    /* 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 _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)(CamelFolderSummary *, struct _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 *);

    /* save/load individual content info's */
    CamelMessageContentInfo * (*content_info_new)(CamelFolderSummary *, struct _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 *);
};

guint            camel_folder_summary_get_type  (void);
CamelFolderSummary      *camel_folder_summary_new   (void);

void camel_folder_summary_set_filename(CamelFolderSummary *, const char *);
void camel_folder_summary_set_index(CamelFolderSummary *, ibex *);
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 *);

/* 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 _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(CamelFolderSummary *s);
CamelMessageInfo *camel_folder_summary_info_new_from_header(CamelFolderSummary *, struct _header_raw *);
CamelMessageInfo *camel_folder_summary_info_new_from_parser(CamelFolderSummary *, CamelMimeParser *);
CamelMessageInfo *camel_folder_summary_info_new_from_message(CamelFolderSummary *, CamelMimeMessage *);

void camel_folder_summary_info_free(CamelFolderSummary *, CamelMessageInfo *);

/* 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);
/* 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);

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

/* summary file loading/saving helper functions */
int camel_folder_summary_encode_fixed_int32(FILE *, gint32);
int camel_folder_summary_decode_fixed_int32(FILE *, gint32 *);
int camel_folder_summary_encode_uint32(FILE *, guint32);
int camel_folder_summary_decode_uint32(FILE *, guint32 *);
int camel_folder_summary_encode_time_t(FILE *out, time_t value);
int camel_folder_summary_decode_time_t(FILE *in, time_t *dest);
int camel_folder_summary_encode_off_t(FILE *out, off_t value);
int camel_folder_summary_decode_off_t(FILE *in, off_t *dest);
int camel_folder_summary_encode_string(FILE *out, const char *str);
int camel_folder_summary_decode_string(FILE *in, char **);

/* 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);
void        camel_flag_set(CamelFlag **list, const char *name, gboolean state);
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);
void        camel_tag_set(CamelTag **list, const char *name, const char *value);
int     camel_tag_list_size(CamelTag **list);
void        camel_tag_list_free(CamelTag **list);

/* message info utils for working with pseudo-messageinfo structures
   NOTE: These cannot be added to a real summary object, but suffice for all
   other external interfaces that use message info's */
CamelMessageInfo *camel_message_info_new ();
CamelMessageInfo *camel_message_info_new_from_header (struct _header_raw *header);
void camel_message_info_dup_to(const CamelMessageInfo *from, CamelMessageInfo *to);
void camel_message_info_free(CamelMessageInfo *mi);

/* accessors */
#ifdef DOESTRV
const char *camel_message_info_string(const CamelMessageInfo *mi, int type);
#define camel_message_info_subject(x) camel_message_info_string((const CamelMessageInfo *)(x), CAMEL_MESSAGE_INFO_SUBJECT)
#define camel_message_info_from(x) camel_message_info_string((const CamelMessageInfo *)(x), CAMEL_MESSAGE_INFO_FROM)
#define camel_message_info_to(x) camel_message_info_string((const CamelMessageInfo *)(x), CAMEL_MESSAGE_INFO_TO)
#define camel_message_info_cc(x) camel_message_info_string((const CamelMessageInfo *)(x), CAMEL_MESSAGE_INFO_CC)
#define camel_message_info_uid(x) camel_message_info_string((const CamelMessageInfo *)(x), CAMEL_MESSAGE_INFO_UID)

void camel_message_info_set_string(CamelMessageInfo *mi, int type, char *str);
#define camel_message_info_set_subject(x, s) camel_message_info_set_string(x, CAMEL_MESSAGE_INFO_SUBJECT, s)
#define camel_message_info_set_from(x, s) camel_message_info_set_string(x, CAMEL_MESSAGE_INFO_FROM, s)
#define camel_message_info_set_to(x, s) camel_message_info_set_string(x, CAMEL_MESSAGE_INFO_TO, s)
#define camel_message_info_set_cc(x, s) camel_message_info_set_string(x, CAMEL_MESSAGE_INFO_CC, s)
#define camel_message_info_set_uid(x, s) camel_message_info_set_string(x, CAMEL_MESSAGE_INFO_UID, s)

#else

#define camel_message_info_subject(x) (((CamelMessageInfo *)(x))->subject?((CamelMessageInfo *)(x))->subject:"")
#define camel_message_info_from(x) (((CamelMessageInfo *)(x))->from?((CamelMessageInfo *)(x))->from:"")
#define camel_message_info_to(x) (((CamelMessageInfo *)(x))->to?((CamelMessageInfo *)(x))->to:"")
#define camel_message_info_cc(x) (((CamelMessageInfo *)(x))->cc?((CamelMessageInfo *)(x))->cc:"")
#define camel_message_info_uid(x) (((CamelMessageInfo *)(x))->uid?((CamelMessageInfo *)(x))->uid:"")

#define camel_message_info_set_subject(x, s) (g_free(((CamelMessageInfo *)(x))->subject),((CamelMessageInfo *)(x))->subject = (s))
#define camel_message_info_set_from(x, s) (g_free(((CamelMessageInfo *)(x))->from),((CamelMessageInfo *)(x))->from = (s))
#define camel_message_info_set_to(x, s) (g_free(((CamelMessageInfo *)(x))->to),((CamelMessageInfo *)(x))->to = (s))
#define camel_message_info_set_cc(x, s) (g_free(((CamelMessageInfo *)(x))->cc),((CamelMessageInfo *)(x))->cc = (s))
#define camel_message_info_set_uid(x, s) (g_free(((CamelMessageInfo *)(x))->uid),((CamelMessageInfo *)(x))->uid = (s))
#endif

#endif /* ! _CAMEL_FOLDER_SUMMARY_H */