C++ (Cpp) G__check_gisinit Examples

Example #1

File: open.c Project: AsherBond/MondocosmOS

/*!
  \brief Lowest level open routine.

  Opens the file <i>name</i> in <i>element</i> ("cell", etc.) in mapset <i>mapset</i>
  according to the i/o <i>mode</i>.

   - mode = 0 (read) will look for <i>name</i> in <i>mapset</i> and
               open the file for read only the file must exist
 
   - mode = 1 (write) will create an empty file <i>name</i> in the
               current mapset and open the file for write only
               <i>mapset</i> ignored

   - mode = 2 (read and write) will open a file in the current mapset
               for reading and writing creating a new file if
               necessary <i>mapset</i> ignored

  \param element database element name
  \param name map file name
  \param mapset mapset containing map <i>name</i>
  \param mode r/w mode 0=read, 1=write, 2=read/write
 
  \return open file descriptor (int)
  \return -1 could not open
*/
static int G__open(const char *element,
		   const char *name, const char *mapset, int mode)
{
    char path[GPATH_MAX];
    char xname[GNAME_MAX], xmapset[GMAPSET_MAX];


    G__check_gisinit();

    /* READ */
    if (mode == 0) {
	if (G_name_is_fully_qualified(name, xname, xmapset)) {
	    if (*mapset && strcmp(xmapset, mapset) != 0) {
		G_warning(_("G__open(read): mapset <%s> doesn't match xmapset <%s>"),
			  mapset, xmapset);
		return -1;
	    }
	    name = xname;
	    mapset = xmapset;
	}
	else if (!mapset || !*mapset)
	    mapset = G_find_file2(element, name, mapset);

	if (!mapset)
	    return -1;

	G_file_name(path, element, name, mapset);

	return open(path, 0);
    }
    /* WRITE */
    if (mode == 1 || mode == 2) {
	mapset = G_mapset();
	if (G_name_is_fully_qualified(name, xname, xmapset)) {
	    if (strcmp(xmapset, mapset) != 0) {
		G_warning(_("G__open(write): xmapset <%s> != G_mapset() <%s>"),
			  xmapset, mapset);
		return -1;
	    }
	    name = xname;
	}

	if (*name && G_legal_filename(name) == -1)
	    return -1;

	G_file_name(path, element, name, mapset);

	if (mode == 1 || access(path, 0) != 0) {
	    G__make_mapset_element(element);
	    close(open(path, O_WRONLY | O_CREAT | O_TRUNC, 0666));
	}

	return open(path, mode);
    }
    return -1;
}

Example #2

File: open.c Project: cran/GRASS

int G__open (
    char *element,
    char *name,
    char *mapset,
    int mode)
{
    char path[1024];
    char xname[512], xmapset[512], *dummy;
    int G_fd;


    G__check_gisinit();

/* READ */
    if (mode == 0)
    {
	if (G__name_is_fully_qualified (name, xname, xmapset))
	{
	    if (strcmp (xmapset, mapset) != 0) {
		fprintf(stderr, "G__open(r): mapset (%s) doesn't match xmapset (%s)\n",
			mapset,xmapset);
		    return -1;
	    }
	    name = xname;
	}
	if ((dummy = G_find_file (element, name, mapset)) == NULL)
	    return -1;
	G_free (dummy);
	G__file_name (path, element, name, mapset);

        G_fd = open (path, 0);
#if defined R_GRASS_INTERFACE && defined __MINGW32_VERSION
        setmode(G_fd, O_BINARY);
#endif /* __MINGW32_VERSION && R_GRASS_INTERFACE */
        return G_fd;
    }
/* WRITE */
    if (mode == 1 || mode == 2)
    {
	if (G__name_is_fully_qualified (name, xname, xmapset))
	{
	    if (strcmp (xmapset, G_mapset()) != 0) {
		fprintf(stderr, "G__open(w): xmapset (%s) != G_mapset() (%s)\n",
			xmapset,G_mapset());
		return -1;
	    }
	    name = xname;
	}

	if (G_legal_filename(name) == -1)
	    return -1;

	G__file_name (path, element, name, G_mapset());
	if(mode == 1 || access(path,0) != 0)
	{
	    G__make_mapset_element (element);
	    close (creat (path, 0666));
	}

      G_fd = open (path, mode);
#if defined R_GRASS_INTERFACE && defined __MINGW32_VERSION
      setmode(G_fd, O_BINARY);
#endif /* __MINGW32_VERSION && R_GRASS_INTERFACE */
      return G_fd;
   }
    return -1;
}