[mmh] / uip / rmf.c

/*
 * rmf.c -- remove a folder
 *
 * $Id$
 *
 * This code is Copyright (c) 2002, by the authors of nmh.  See the
 * COPYRIGHT file in the root directory of the nmh distribution for
 * complete copyright information.
 */

#include <h/mh.h>

static struct swit switches[] = {
#define INTRSW            0
    { "interactive", 0 },
#define NINTRSW           1
    { "nointeractive", 0 },
#define VERSIONSW         2
    { "version", 0 },
#define HELPSW            3
    { "help", 0 },
    { NULL, 0 }
};

/*
 * static prototypes
 */
static int rmf(char *);
static void rma (char *);


int
main (int argc, char **argv)
{
    int defolder = 0, interactive = -1;
    char *cp, *folder = NULL, newfolder[BUFSIZ];
    char buf[BUFSIZ], **argp, **arguments;

#ifdef LOCALE
    setlocale(LC_ALL, "");
#endif
    invo_name = r1bindex (argv[0], '/');

    /* read user profile/context */
    context_read();

    arguments = getarguments (invo_name, argc, argv, 1);
    argp = arguments;

    while ((cp = *argp++)) {
        if (*cp == '-') {
            switch (smatch (++cp, switches)) {
                case AMBIGSW: 
                    ambigsw (cp, switches);
                    done (1);
                case UNKWNSW: 
                    adios (NULL, "-%s unknown", cp);

                case HELPSW: 
                    snprintf (buf, sizeof(buf), "%s [+folder] [switches]",
                        invo_name);
                    print_help (buf, switches, 1);
                    done (1);
                case VERSIONSW:
                    print_version(invo_name);
                    done (1);

                case INTRSW: 
                    interactive = 1;
                    continue;
                case NINTRSW: 
                    interactive = 0;
                    continue;
            }
        }
        if (*cp == '+' || *cp == '@') {
            if (folder)
                adios (NULL, "only one folder at a time!");
            else
                folder = path (cp + 1, *cp == '+' ? TFOLDER : TSUBCWF);
        } else {
            adios (NULL, "usage: %s [+folder] [switches]", invo_name);
        }
    }

    if (!context_find ("path"))
        free (path ("./", TFOLDER));
    if (!folder) {
        folder = getfolder (1);
        defolder++;
    }
    if (strcmp (m_mailpath (folder), pwd ()) == 0)
        adios (NULL, "sorry, you can't remove the current working directory");

    if (interactive == -1)
        interactive = defolder;

    if (strchr (folder, '/') && (*folder != '/') && (*folder != '.')) {
        for (cp = copy (folder, newfolder); cp > newfolder && *cp != '/'; cp--)
            continue;
        if (cp > newfolder)
            *cp = '\0';
        else
            strncpy (newfolder, getfolder(0), sizeof(newfolder));
    } else {
        strncpy (newfolder, getfolder(0), sizeof(newfolder));
    }

    if (interactive) {
        cp = concat ("Remove folder \"", folder, "\"? ", NULL);
        if (!getanswer (cp))
            done (0);
        free (cp);
    }

    if (rmf (folder) == OK && strcmp (context_find (pfolder), newfolder)) {
        printf ("[+%s now current]\n", newfolder);
        context_replace (pfolder, newfolder);   /* update current folder */
    }
    context_save ();    /* save the context file */
    return done (0);
}

static int
rmf (char *folder)
{
    int i, j, others;
    register char *maildir;
    char cur[BUFSIZ];
    register struct dirent *dp;
    register DIR *dd;

    switch (i = chdir (maildir = m_maildir (folder))) {
        case OK: 
            if (access (".", W_OK) != NOTOK && access ("..", W_OK) != NOTOK)
                break;          /* fall otherwise */

        case NOTOK: 
            snprintf (cur, sizeof(cur), "atr-%s-%s",
                        current, m_mailpath (folder));
            if (!context_del (cur)) {
                printf ("[+%s de-referenced]\n", folder);
                return OK;
            }
            advise (NULL, "you have no profile entry for the %s folder +%s",
                    i == NOTOK ? "unreadable" : "read-only", folder);
            return NOTOK;
    }

    if ((dd = opendir (".")) == NULL)
        adios (NULL, "unable to read folder +%s", folder);
    others = 0;

    j = strlen(BACKUP_PREFIX);
    while ((dp = readdir (dd))) {
        switch (dp->d_name[0]) {
            case '.': 
                if (strcmp (dp->d_name, ".") == 0
                        || strcmp (dp->d_name, "..") == 0)
                    continue;   /* else fall */

            case ',': 
#ifdef MHE
            case '+': 
#endif /* MHE */
#ifdef UCI
            case '_': 
            case '#': 
#endif /* UCI */
                break;

            default: 
                if (m_atoi (dp->d_name))
                    break;
                if (strcmp (dp->d_name, LINK) == 0
                        || strncmp (dp->d_name, BACKUP_PREFIX, j) == 0)
                    break;

                admonish (NULL, "file \"%s/%s\" not deleted",
                        folder, dp->d_name);
                others++;
                continue;
        }
        if (unlink (dp->d_name) == NOTOK) {
            admonish (dp->d_name, "unable to unlink %s:", folder);
            others++;
        }
    }

    closedir (dd);

    /*
     * Remove any relevant private sequences
     * or attributes from context file.
     */
    rma (folder);

    chdir ("..");
    if (others == 0 && remdir (maildir))
        return OK;

    advise (NULL, "folder +%s not removed", folder);
    return NOTOK;
}


/*
 * Remove all the (private) sequence information for
 * this folder from the profile/context list.
 */

static void
rma (char *folder)
{
    register int alen, j, plen;
    register char *cp;
    register struct node *np, *pp;

    /* sanity check - check that context has been read */
    if (defpath == NULL)
        adios (NULL, "oops, context hasn't been read yet");

    alen = strlen ("atr-");
    plen = strlen (cp = m_mailpath (folder)) + 1;

    /*
     * Search context list for keys that look like
     * "atr-something-folderpath", and remove them.
     */
    for (np = m_defs, pp = NULL; np; np = np->n_next) {
        if (ssequal ("atr-", np->n_name)
                && (j = strlen (np->n_name) - plen) > alen
                && *(np->n_name + j) == '-'
                && strcmp (cp, np->n_name + j + 1) == 0) {
            if (!np->n_context)
                admonish (NULL, "bug: context_del(key=\"%s\")", np->n_name);
            if (pp) {
                pp->n_next = np->n_next;
                np = pp;
            } else {
                m_defs = np->n_next;
            }
            ctxflags |= CTXMOD;
        } else {
            pp = np;
        }
    }
}