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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>
/* this object requires Pd 0.40.3 or later */
/* WARNING: KLUDGE! */
/*
* this struct is not publically defined (its in g_canvas.c) so I need to
* include this here. Its from Pd 0.47-0. */
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 =
#ifdef VERSION
VERSION
#else
"unknown"
#endif
;
int sys_trytoopenone(const char *, const char *, const char*, char *, char **, unsigned int, int);
/* 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>
*/
/*
* TODO
* - get 'declare' messages from the meta-file, and send them to the current canvas
*/
static void libdir_get_fullname(char*dest, size_t size, const char*classname) {
snprintf(dest, size-1, "%s/%s-meta", classname, classname);
dest[size-1]=0;
}
#if PD_MAJOR_VERSION>0 || PD_MINOR_VERSION>47
/* gone from the headers, but still present for binary compat */
extern t_namelist *sys_searchpath;
#endif
static int libdir_add_to_globalpath(const char*path) {
int major, minor, bugfix;
sys_getversion(&major, &minor, &bugfix);
if((major==0 && minor < 48)) {
sys_searchpath = namelist_append(sys_searchpath, path, 0);
} else {
const char *inptr = path;
char encoded[MAXPDSTRING];
char *outptr = encoded;
t_atom ap[2];
*outptr++='+';
while(inptr && ((outptr+2) < (encoded+MAXPDSTRING))) {
*outptr++ = *inptr++;
if ('+'==inptr[-1])
*outptr++='+';
}
*outptr=0;
SETSYMBOL(ap+0, gensym(encoded));
SETFLOAT(ap+1, 0.f);
pd_typedmess(gensym("pd")->s_thing, gensym("add-to-path"), 2, ap);
}
return 1;
}
static int libdir_add_to_path(const char*dirbuf, t_canvas*canvas) {
if(sys_isabsolutepath(dirbuf)) { // only include actual full paths
if (canvas) {
t_canvasenvironment *canvasenvironment = canvas_getenv(canvas);
canvasenvironment->ce_path = namelist_append(canvasenvironment->ce_path,
dirbuf, 0);
} else {
return libdir_add_to_globalpath(dirbuf);
}
return 1;
}
return 0;
}
static int libdir_loader_legacy(t_canvas *canvas, char *classname)
{
int fd = -1;
char fullclassname[FILENAME_MAX], dirbuf[FILENAME_MAX];
char *nameptr;
/* look for meta file (classname)/(classname)-meta.pd */
libdir_get_fullname(fullclassname, FILENAME_MAX, classname);
/* if this is being called from a canvas, then add the library path to the
* canvas-local path */
if(canvas)
/* setting the canvas to NULL causes it to ignore any canvas-local path */
fd = canvas_open(NULL, fullclassname, ".pd",
dirbuf, &nameptr, FILENAME_MAX, 0);
else
fd = open_via_path(".", fullclassname, ".pd",
dirbuf, &nameptr, FILENAME_MAX, 0);
if(fd < 0)
{
return (0);
}
sys_close(fd);
#if 0
if(!canvas) {
char helppathname[FILENAME_MAX];
strncpy(helppathname, sys_libdir->s_name, FILENAME_MAX-30);
helppathname[FILENAME_MAX-30] = 0;
strcat(helppathname, "/doc/5.reference/");
strcat(helppathname, classname);
sys_helppath = namelist_append(sys_helppath, helppathname, 0);
}
#endif
if(libdir_add_to_path(dirbuf, canvas))
logpost(NULL, 3, "libdir_loader: added '%s' to the %s objectclass path",
classname, canvas?"canvas-local":"global");
/* post("libdir_loader loaded fullclassname: '%s'\n", fullclassname); */
logpost(NULL, 14, "Loaded libdir '%s' from '%s'", classname, dirbuf);
return (1);
}
static int libdir_loader_pathwise(t_canvas *canvas, const char *classname, const char*path)
{
int fd = -1;
char fullclassname[FILENAME_MAX], dirbuf[FILENAME_MAX];
char *nameptr;
if(!path) {
/* we already tried all paths, so skip this */
return 0;
}
/* look for meta file (classname)/(classname)-meta.pd */
libdir_get_fullname(fullclassname, FILENAME_MAX, classname);
if ((fd = sys_trytoopenone(path, fullclassname, ".pd",
dirbuf, &nameptr, FILENAME_MAX, 0)) < 0) {
return 0;
}
sys_close(fd);
if(libdir_add_to_path(dirbuf, canvas))
logpost(NULL, 3, "libdir_loader: added '%s' to the %s objectclass path",
classname, canvas?"canvas-local":"global");
/* post("libdir_loader loaded fullclassname: '%s'\n", fullclassname); */
logpost(NULL, 14, "Loaded libdir '%s' from '%s'", classname, dirbuf);
return (1);
}
static t_class *libdir_class;
static void*libdir_new(void)
{
t_pd *x = pd_new(libdir_class);
return (x);
}
void libdir_setup(void)
{
int major, minor, bugfix;
sys_getversion(&major, &minor, &bugfix);
if (major>0 || minor >=47) {
sys_register_loader((void*)libdir_loader_pathwise);
} else {
sys_register_loader((void*)libdir_loader_legacy);
}
logpost(NULL, 3, "libdir loader %s",version);
logpost(NULL, 3, "\tcompiled on "__DATE__" at "__TIME__ " ");
logpost(NULL, 3, "\tcompiled against Pd version %d.%d.%d.%s",
PD_MAJOR_VERSION, PD_MINOR_VERSION, PD_BUGFIX_VERSION, PD_TEST_VERSION);
libdir_class = class_new(gensym("libdir"), libdir_new, 0, sizeof(t_object), CLASS_NOINLET, 0);
}
void setup(void)
{
libdir_setup();
}
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