do_remove.c

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/*!
  \file lib/manage/do_remove.c
  
  \brief Manage Library - Remove elements
  
  (C) 2001-2011 by the GRASS Development Team
 
  This program is free software under the GNU General Public License
  (>=v2). Read the file COPYING that comes with GRASS for details.
  
  \author Original author CERL
*/

#include <string.h>

#include <grass/gis.h>
#include <grass/vector.h>
#include <grass/glocale.h>
#include <grass/raster3d.h>

#include "manage_local_proto.h"

/*!
  \brief Remove elements from data base

  \param n element id
  \param old name of element to be removed

  \return 0 on success
  \return 1 on error
*/
int M_do_remove(int n, const char *old)
{
    int i, ret;

    /* int len; */
    const char *mapset;
    int result = 0;
    int removed = 0;
    char xname[GNAME_MAX], xmapset[GMAPSET_MAX];

    G_message(_("Removing %s <%s>"), list[n].maindesc, old);

    /* len = get_description_len(n); */

    M__hold_signals(1);

    if (G_name_is_fully_qualified(old, xname, xmapset)) {
        if (strcmp(xmapset, G_mapset()) != 0)
            G_fatal_error("%s is not in the current mapset (%s)", old,
                          G_mapset());
        old = xname;
    }

    if (G_strcasecmp(list[n].alias, "vector") == 0) {
        if ((mapset = G_find_vector2(old, "")) == NULL) {
            G_warning(_("Vector map <%s> not found"), old);
        }
        else {
            ret = Vect_delete(old);
            if (ret != -1) {
                removed = 1;
            }
            else {
                G_warning(_("Unable to delete vector map"));
                result = 1;
            }
        }
    }
    else {
        if (G_strcasecmp(list[n].alias, "raster") == 0) {
            if ((mapset = G_find_raster2(old, "")) == NULL)
                G_warning(_("Raster map <%s> not found"), old);
        }

        if (G_strcasecmp(list[n].alias, "raster_3d") == 0) {
            if ((mapset = G_find_raster3d(old, "")) == NULL)
                G_warning(_("3D raster map <%s> not found"), old);
        }

        for (i = 0; i < list[n].nelem; i++) {

            switch (G_remove(list[n].element[i], old)) {
            case -1:
                G_warning(_("Unable to remove %s element"), list[n].desc[i]);
                result = 1;
                break;
            case 0:
                G_verbose_message(_("%s is missing"), list[n].desc[i]);
                break;
            case 1:
                G_verbose_message(_("%s removed"), list[n].desc[i]);
                removed = 1;
                break;
            }
        }
    }

    if (G_strcasecmp(list[n].element[0], "cell") == 0) {
        char colr2[GPATH_MAX];

        G_snprintf(colr2, GPATH_MAX, "colr2/%s", G_mapset());
        switch (G_remove(colr2, old)) {
        case -1:
            G_warning(_("Unable to remove %s"), colr2);
            result = 1;
            break;
        case 0:
            G_verbose_message(_("%s is missing"), colr2);
            break;
        case 1:
            G_verbose_message(_("%s removed"), colr2);
            removed = 1;
            break;
        }
    }

    M__hold_signals(0);

    if (!removed)
        G_warning(_("<%s> nothing removed"), old);

    return result;
}