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209 lines
7.8 KiB
C
209 lines
7.8 KiB
C
/*
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** Copyright (C) 2008-2013 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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#ifndef __MU_MAILDIR_H__
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#define __MU_MAILDIR_H__
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#include <glib.h>
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#include <time.h>
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#include <sys/types.h> /* for mode_t */
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#include <mu-util.h>
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#include <mu-flags.h>
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G_BEGIN_DECLS
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/**
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* create a new maildir. if parts of the maildir already exists, those
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* will simply be ignored. IOW, if you try to create the same maildir
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* twice, the second will simply be a no-op (without any errors).
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* Note, if the function fails 'halfway', it will *not* try to remove
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* the parts the were created. it *will* create any parent dirs that
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* are not yet existent.
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*
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*
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* @param path the path (missing components will be created, as in 'mkdir -p')
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* @param mode the file mode (e.g., 0755)
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* @param noindex add a .noindex file to the maildir, so it will be excluded
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* from indexing by 'mu index'
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* @param err if function returns FALSE, receives error
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* information. err may be NULL.
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*
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* @return TRUE if creation succeeded (or already existed), FALSE otherwise
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*/
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gboolean mu_maildir_mkdir (const char* path, mode_t mode, gboolean noindex,
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GError **err);
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/**
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* create a symbolic link to a mail message
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*
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* @param src the full path to the source message
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* @param targetpath the path to the target maildir; ie., *not*
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* MyMaildir/cur, but just MyMaildir/. The function will figure out
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* the correct subdir then.
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* @param err if function returns FALSE, err may contain extra
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* information. if err is NULL, does nothing
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*
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* @return
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*/
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gboolean mu_maildir_link (const char* src, const char *targetpath,
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GError **err);
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/**
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* MuMaildirWalkMsgCallback -- callback function for
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* mu_path_walk_maildir; see the documentation there. It will be
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* called for each message found, with fullpath containing the full
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* path to the message, mdir containing the maildir -- that is, when
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* indexing ~/Maildir, a message ~/Maildir/foo/bar/cur/msg would have
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* the maildir "foo/bar". Then, the information from 'stat' of this
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* file (see stat(3)), and a user_data pointer
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*/
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typedef MuError (*MuMaildirWalkMsgCallback)
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(const char* fullpath, const char* mdir, struct stat *statinfo,
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void *user_data);
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/**
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* MuPathWalkDirCallback -- callback function for mu_path_walk_maildir; see the
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* documentation there. It will be called each time a dir is entered or left,
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* with 'enter' being TRUE upon entering, FALSE otherwise
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*/
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typedef MuError (*MuMaildirWalkDirCallback)
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(const char* fullpath, gboolean enter, void *user_data);
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/**
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* start a recursive walk of a maildir; for each file found, we call
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* callback with the path (with the Maildir path of scanner_new as
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* root), the filename, the timestamp (mtime) of the file,and the
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* *data pointer, for user data. dot-files are ignored, as well as
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* files outside cur/ and new/ dirs and unreadable files; however,
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* dotdirs are visited (ie. '.dotdir/cur'), so this enables Maildir++.
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* (http://www.inter7.com/courierimap/README.maildirquota.html, search
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* for 'Mission statement'). In addition, dirs containing a file named
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* '.noindex' are ignored, as are their subdirectories, and dirs
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* containing a file called '.noupdate' are ignored, unless @param
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* full is TRUE.
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*
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* mu_walk_maildir stops if the callbacks return something different
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* from MU_OK. For example, it can return MU_STOP to stop the scan, or
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* some error.
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*
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* @param path the maildir path to scan
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* @param cb_msg the callback function called for each msg
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* @param cb_dir the callback function called for each dir
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* @param full whether do a full scan, i.e., to ignore .noupdate files
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* @param data user data pointer
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*
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* @return a scanner result; MU_OK if everything went ok,
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* MU_STOP if we want to stop, or MU_ERROR in
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* case of error
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*/
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MuError mu_maildir_walk (const char *path, MuMaildirWalkMsgCallback cb_msg,
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MuMaildirWalkDirCallback cb_dir, gboolean full,
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void *data);
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/**
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* recursively delete all the symbolic links in a directory tree
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*
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* @param dir top dir
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* @param err if function returns FALSE, err may contain extra
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* information. if err is NULL, does nothing
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*
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* @return TRUE if it worked, FALSE in case of error
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*/
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gboolean mu_maildir_clear_links (const gchar* dir, GError **err);
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/**
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* get the Maildir flags from the full path of a mailfile. The flags
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* are as specified in http://cr.yp.to/proto/maildir.html, plus
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* MU_MSG_FLAG_NEW for new messages, ie the ones that live in
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* new/. The flags are logically OR'ed. Note that the file does not
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* have to exist; the flags are based on the path only.
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*
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* @param pathname of a mailfile; it does not have to refer to an
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* actual message
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*
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* @return the flags, or MU_MSG_FILE_FLAG_UNKNOWN in case of error
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*/
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MuFlags mu_maildir_get_flags_from_path (const char* pathname);
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/**
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* get the new pathname for a message, based on the old path and the
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* new flags and (optionally) a new maildir. Note that
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* setting/removing the MU_FLAG_NEW will change the directory in which
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* a message lives. The flags are as specified in
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* http://cr.yp.to/proto/maildir.html, plus MU_FLAG_NEW for new
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* messages, ie the ones that live in new/. The flags are logically
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* OR'ed. Note that the file does not have to exist; the flags are
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* based on the path only.
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*
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*
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* @param oldpath the old (current) full path to the message
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* (including the filename)
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* @param new_mdir the new maildir for this message, or NULL to keep
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* it in the current one. The maildir is the absolute file system
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* path, without the 'cur' or 'new'
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* @param new_flags the new flags for this message
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*
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* @return a new path name; use g_free when done with. NULL in case of
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* error.
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*/
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char* mu_maildir_get_new_path (const char *oldpath, const char *new_mdir,
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MuFlags new_flags);
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/**
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* get the maildir for a certain message path, ie, the path *before*
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* cur/ or new/
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*
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* @param path path for some message
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*
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* @return the maildir (free with g_free), or NULL in case of error
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*/
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char* mu_maildir_get_maildir_from_path (const char* path);
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/**
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* move a message file to another maildir; the function returns the full
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* path to the new message.
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*
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* @param msgpath an absolute file system path to an existing message in an
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* actual maildir
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* @param targetmdir the target maildir; note that this the base-level
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* Maildir, ie. /home/user/Maildir/archive, and must _not_ include the
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* 'cur' or 'new' part. Note that the target maildir must be on the
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* same filesystem. If you specify NULL for targetmdir, only the flags
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* of the message are affected; note that this may still involve a
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* moved to another directory (say, from new/ to cur/)
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* @param flags to set for the target (influences the filename, path)
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* @param ignore_dups whether to silent ignore the src=target case (and return TRUE)
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* @param err (may be NULL) may contain error information; note if the
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* function return FALSE, err is not set for all error condition
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* (ie. not for parameter errors)
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*
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* @return return the full path name of the target file (g_free) if
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* the move succeeded, NULL otherwise
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*/
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gchar* mu_maildir_move_message (const char* oldpath, const char* targetmdir,
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MuFlags newflags, gboolean ignore_dups,
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GError **err);
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G_END_DECLS
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#endif /*__MU_MAILDIR_H__*/
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