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#include "m_pd.h"
#include "s_stuff.h"
#include "g_canvas.h"
#include <stdio.h>
#include <string.h>
#include <unistd.h>
/* WARNING: KLUDGE! */
/*
* this struct is not publically defined (its in g_canvas.c) so I need to
* include this here. Its from Pd 0.41-test03 2006-11-19. */
struct _canvasenvironment
{
t_symbol *ce_dir; /* directory patch lives in */
int ce_argc; /* number of "$" arguments */
t_atom *ce_argv; /* array of "$" arguments */
int ce_dollarzero; /* value of "$0" */
t_namelist *ce_path; /* search path */
};
static char *version = "$Revision: 1.6 $";
/* This loader opens a directory with a -meta.pd file as a library. In the
* long run, the idea is that one folder will have all of objects files, all
* of the related *-help.pd files, a file with meta data for the help system,
* etc. Then to install the lib, it would just be dropped into extra, or
* anywhere in the global classpath.
*
* Ultimately, the meta file will be read for meta data, specifically for
* the auto-generated Help system, but for other things too. Right now,
* its just used as a marker that a directory is meant to be a library.
* Plus its much easier to implement it this way, I can use
* open_via_path() instead of writing a new function. The grand plan is
* to have one directory hold the objects, help files, manuals,
* etc. making it a self-contained library. <hans@at.or.at>
*/
static int libdir_loader(t_canvas *canvas, char *classname)
{
int fd = -1, i;
char fullclassname[MAXPDSTRING], dirbuf[MAXPDSTRING];
char reldirbuf[MAXPDSTRING], curdir[MAXPDSTRING], *nameptr;
t_canvasenvironment *canvasenvironment;
/* look for meta file (classname)/(classname)-meta.pd */
strncpy(fullclassname, classname, MAXPDSTRING - 6);
strcat(fullclassname, "/");
strncat(fullclassname, classname, MAXPDSTRING - strlen(fullclassname) - 6);
strcat(fullclassname, "-meta");
/* if this is being called from a canvas, then add the library path to the
* canvas-local path */
#if (PD_MINOR_VERSION >= 40)
if(canvas)
{
canvasenvironment = canvas_getenv(canvas);
if ((fd = canvas_open(0, fullclassname, ".pd",
dirbuf, &nameptr, MAXPDSTRING, 0)) < 0)
{
return (0);
}
close(fd);
// G.Holzmann: canvas will look to a relative path to it, so we cannot add
// the absulote dirbuf path, we have to make it relative to the current canvas
// (see from line 1561 in g_canvas.c)
sys_unbashfilename(canvas_getdir(canvas)->s_name, curdir);
// count depth of the current dir
for(i=0; i<strlen(curdir); i++)
{
if(curdir[i] == 47) // 47 is "/" in ascii
strncat(reldirbuf, "../", MAXPDSTRING);
}
strncat(reldirbuf, dirbuf, MAXPDSTRING);
// TODO: have this add to the canvas-local path only
canvasenvironment->ce_path = namelist_append(canvasenvironment->ce_path,
reldirbuf, 0);
post("libdir_loader: added %s to the canvas-local path", classname);
}
else
#endif
{
if ((fd = open_via_path(".", fullclassname, ".pd",
dirbuf, &nameptr, MAXPDSTRING, 0)) < 0)
{
return (0);
}
close(fd);
sys_searchpath = namelist_append(sys_searchpath, dirbuf, 0);
post("libdir_loader: added %s to the global classpath", classname);
post("\tThis is deprecated behavior.");
}
/* post("libdir_loader loaded fullclassname: '%s'\n", fullclassname); */
if (sys_verbose)
post("Loaded libdir %s from %s", classname, dirbuf);
return (1);
}
void libdir_setup(void)
{
/* relies on t.grill's loader functionality, fully added in 0.40 */
#if (PD_MINOR_VERSION >= 40)
sys_register_loader(libdir_loader);
#else
error("to function, this needs to be compiled against Pd 0.40 or higher,\n");
post("\tor a version that has sys_register_loader()");
#endif
post("libdir loader %s",version);
post("\twritten by Hans-Christoph Steiner <hans@at.or.at>");
post("\tcompiled on "__DATE__" at "__TIME__ " ");
post("\tcompiled against Pd version %d.%d.%d.%s", PD_MAJOR_VERSION,
PD_MINOR_VERSION, PD_BUGFIX_VERSION, PD_TEST_VERSION);
}
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