g_readwrite.c 27.9 KB
Newer Older
Miller Puckette's avatar
Miller Puckette committed
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
/* Copyright (c) 1997-2002 Miller Puckette and others.
* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution.  */

/* 
Routines to read and write canvases to files:
canvas_savetofile() writes a root canvas to a "pd" file.  (Reading "pd" files
is done simply by passing the contents to the pd message interpreter.)
Alternatively, the  glist_read() and glist_write() routines read and write
"data" from and to files (reading reads into an existing canvas), using a
file format as in the dialog window for data.
*/

#include <stdlib.h>
#include <stdio.h>
#include "m_pd.h"
#include "g_canvas.h"
#include <string.h>

void canvas_savedeclarationsto(t_canvas *x, t_binbuf *b);

    /* the following routines read "scalars" from a file into a canvas. */

static int canvas_scanbinbuf(int natoms, t_atom *vec, int *p_indexout,
    int *p_next)
{
Mathieu L Bouchard's avatar
Mathieu L Bouchard committed
27
    int i;
Miller Puckette's avatar
Miller Puckette committed
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
    int indexwas = *p_next;
    *p_indexout = indexwas;
    if (indexwas >= natoms)
        return (0);
    for (i = indexwas; i < natoms && vec[i].a_type != A_SEMI; i++)
        ;
    if (i >= natoms)
        *p_next = i;
    else *p_next = i + 1;
    return (i - indexwas);
}

int glist_readscalar(t_glist *x, int natoms, t_atom *vec,
    int *p_nextmsg, int selectit);

static void canvas_readerror(int natoms, t_atom *vec, int message, 
    int nline, char *s)
{
Ivica Ico Bukvic's avatar
Ivica Ico Bukvic committed
46
    error("%s", s);
Miller Puckette's avatar
Miller Puckette committed
47
48
49
50
51
52
53
54
55
56
    startpost("line was:");
    postatom(nline, vec + message);
    endpost();
}

    /* fill in the contents of the scalar into the vector w. */

static void glist_readatoms(t_glist *x, int natoms, t_atom *vec,
    int *p_nextmsg, t_symbol *templatesym, t_word *w, int argc, t_atom *argv)
{
Mathieu L Bouchard's avatar
Mathieu L Bouchard committed
57
    int message, n, i;
Miller Puckette's avatar
Miller Puckette committed
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73

    t_template *template = template_findbyname(templatesym);
    if (!template)
    {
        error("%s: no such template", templatesym->s_name);
        *p_nextmsg = natoms;
        return;
    }
    word_restore(w, template, argc, argv);
    n = template->t_n;
    for (i = 0; i < n; i++)
    {
        if (template->t_vec[i].ds_type == DT_ARRAY)
        {
            t_array *a = w[i].w_array;
            int elemsize = a->a_elemsize, nitems = 0;
74
            t_symbol *arraytemplatesym = template->t_vec[i].ds_fieldtemplate;
Miller Puckette's avatar
Miller Puckette committed
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
            t_template *arraytemplate =
                template_findbyname(arraytemplatesym);
            if (!arraytemplate)
            {
                error("%s: no such template", arraytemplatesym->s_name);
            }
            else while (1)
            {
                t_word *element;
                int nline = canvas_scanbinbuf(natoms, vec, &message, p_nextmsg);
                    /* empty line terminates array */
                if (!nline)
                    break;
                array_resize(a, nitems + 1);
                element = (t_word *)(((char *)a->a_vec) +
                    nitems * elemsize);
                glist_readatoms(x, natoms, vec, p_nextmsg, arraytemplatesym,
                    element, nline, vec + message);
                nitems++;
            }
        }
        else if (template->t_vec[i].ds_type == DT_LIST)
        {
98
99
100
101
102
103
//            while (1)
//            {
//                if (!glist_readscalar(w->w_list, natoms, vec,
//                    p_nextmsg, 0))
//                        break;
//            }
Miller Puckette's avatar
Miller Puckette committed
104
105
106
107
        }
    }
}

Jonathan Wilkes's avatar
Jonathan Wilkes committed
108
109
void scalar_doloadbang(t_scalar *x);

Miller Puckette's avatar
Miller Puckette committed
110
111
112
int glist_readscalar(t_glist *x, int natoms, t_atom *vec,
    int *p_nextmsg, int selectit)
{
Mathieu L Bouchard's avatar
Mathieu L Bouchard committed
113
    int message, nline;
Miller Puckette's avatar
Miller Puckette committed
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
    t_template *template;
    t_symbol *templatesym;
    t_scalar *sc;
    int nextmsg = *p_nextmsg;
    int wasvis = glist_isvisible(x);

    if (nextmsg >= natoms || vec[nextmsg].a_type != A_SYMBOL)
    {
        if (nextmsg < natoms)
            post("stopping early: type %d", vec[nextmsg].a_type);
        *p_nextmsg = natoms;
        return (0);
    }
    templatesym = canvas_makebindsym(vec[nextmsg].a_w.w_symbol);
    *p_nextmsg = nextmsg + 1;
    
    if (!(template = template_findbyname(templatesym)))
    {
        error("canvas_read: %s: no such template", templatesym->s_name);
        *p_nextmsg = natoms;
        return (0);
    }
    sc = scalar_new(x, templatesym);
    if (!sc)
    {
        error("couldn't create scalar \"%s\"", templatesym->s_name);
        *p_nextmsg = natoms;
        return (0);
    }
    if (wasvis)
    {
            /* temporarily lie about vis flag while this is built */
        glist_getcanvas(x)->gl_mapped = 0;
    }
    glist_add(x, &sc->sc_gobj);
    
    nline = canvas_scanbinbuf(natoms, vec, &message, p_nextmsg);
    glist_readatoms(x, natoms, vec, p_nextmsg, templatesym, sc->sc_vec, 
        nline, vec + message);
    if (wasvis)
    {
            /* reset vis flag as before */
        glist_getcanvas(x)->gl_mapped = 1;
        gobj_vis(&sc->sc_gobj, x, 1);
    }
    if (selectit)
    {
        glist_select(x, &sc->sc_gobj);
    }
Jonathan Wilkes's avatar
Jonathan Wilkes committed
163
164
    /* send a loadbang for any canvas fields in this scalar */
    scalar_doloadbang(sc);
Miller Puckette's avatar
Miller Puckette committed
165
166
167
168
169
    return (1);
}

void glist_readfrombinbuf(t_glist *x, t_binbuf *b, char *filename, int selectem)
{
170
171
    t_canvas *canvas = glist_getcanvas(x);
    int cr = 0, natoms, nline, message, nextmsg = 0, i, j, nitems;
Miller Puckette's avatar
Miller Puckette committed
172
    t_atom *vec;
173
    t_gobj *gobj;
Miller Puckette's avatar
Miller Puckette committed
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228

    natoms = binbuf_getnatom(b);
    vec = binbuf_getvec(b);

    
            /* check for file type */
    nline = canvas_scanbinbuf(natoms, vec, &message, &nextmsg);
    if (nline != 1 && vec[message].a_type != A_SYMBOL &&
        strcmp(vec[message].a_w.w_symbol->s_name, "data"))
    {
        pd_error(x, "%s: file apparently of wrong type", filename);
        binbuf_free(b);
        return;
    }
        /* read in templates and check for consistency */
    while (1)
    {
        t_template *newtemplate, *existtemplate;
        t_symbol *templatesym;
        t_atom *templateargs = getbytes(0);
        int ntemplateargs = 0, newnargs;
        nline = canvas_scanbinbuf(natoms, vec, &message, &nextmsg);
        if (nline < 2)
            break;
        else if (nline > 2)
            canvas_readerror(natoms, vec, message, nline,
                "extra items ignored");
        else if (vec[message].a_type != A_SYMBOL ||
            strcmp(vec[message].a_w.w_symbol->s_name, "template") ||
            vec[message + 1].a_type != A_SYMBOL)
        {
            canvas_readerror(natoms, vec, message, nline,
                "bad template header");
            continue;
        }
        templatesym = canvas_makebindsym(vec[message + 1].a_w.w_symbol);
        while (1)
        {
            nline = canvas_scanbinbuf(natoms, vec, &message, &nextmsg);
            if (nline != 2 && nline != 3)
                break;
            newnargs = ntemplateargs + nline;
            templateargs = (t_atom *)t_resizebytes(templateargs,
                sizeof(*templateargs) * ntemplateargs,
                sizeof(*templateargs) * newnargs);
            templateargs[ntemplateargs] = vec[message];
            templateargs[ntemplateargs + 1] = vec[message + 1];
            if (nline == 3)
                templateargs[ntemplateargs + 2] = vec[message + 2];
            ntemplateargs = newnargs;
        }
        if (!(existtemplate = template_findbyname(templatesym)))
        {
            error("%s: template not found in current patch",
                templatesym->s_name);
229
            t_freebytes(templateargs, sizeof (*templateargs) * ntemplateargs);
Miller Puckette's avatar
Miller Puckette committed
230
231
            return;
        }
232
233
        newtemplate = template_new(templatesym, ntemplateargs, templateargs);
        t_freebytes(templateargs, sizeof (*templateargs) * ntemplateargs);
Miller Puckette's avatar
Miller Puckette committed
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
        if (!template_match(existtemplate, newtemplate))
        {
            error("%s: template doesn't match current one",
                templatesym->s_name);
            template_free(newtemplate);
            return;
        }
        template_free(newtemplate);
    }
    while (nextmsg < natoms)
    {
        glist_readscalar(x, natoms, vec, &nextmsg, selectem);
    }
}

static void glist_doread(t_glist *x, t_symbol *filename, t_symbol *format,
    int clearme)
{
    t_binbuf *b = binbuf_new();
    t_canvas *canvas = glist_getcanvas(x);
    int wasvis = glist_isvisible(canvas);
Mathieu L Bouchard's avatar
Mathieu L Bouchard committed
255
    int cr = 0;
Miller Puckette's avatar
Miller Puckette committed
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294

    if (!strcmp(format->s_name, "cr"))
        cr = 1;
    else if (*format->s_name)
        error("qlist_read: unknown flag: %s", format->s_name);
    
    if (binbuf_read_via_canvas(b, filename->s_name, canvas, cr))
    {
        pd_error(x, "read failed");
        binbuf_free(b);
        return;
    }
    if (wasvis)
        canvas_vis(canvas, 0);
    if (clearme)
        glist_clear(x);
    glist_readfrombinbuf(x, b, filename->s_name, 0);
    if (wasvis)
        canvas_vis(canvas, 1);
    binbuf_free(b);
}

void glist_read(t_glist *x, t_symbol *filename, t_symbol *format)
{
    glist_doread(x, filename, format, 1);
}

void glist_mergefile(t_glist *x, t_symbol *filename, t_symbol *format)
{
    glist_doread(x, filename, format, 0);
}

    /* read text from a "properties" window, called from a gfxstub set
    up in scalar_properties().  We try to restore the object; if successful
    we delete the scalar and put the new thing in its place on the list. */
void canvas_dataproperties(t_canvas *x, t_scalar *sc, t_binbuf *b)
{
    int ntotal, nnew, scindex;
    t_gobj *y, *y2 = 0, *newone, *oldone = 0;
295
    t_template *template;
Miller Puckette's avatar
Miller Puckette committed
296
297
298
299
300
301
302
303
    for (y = x->gl_list, ntotal = 0, scindex = -1; y; y = y->g_next)
    {
        if (y == &sc->sc_gobj)
            scindex = ntotal, oldone = y;
        ntotal++;
    }
    
    if (scindex == -1)
304
305
306
307
    {
        error("data_properties: scalar disappeared");
        return;
    }
Miller Puckette's avatar
Miller Puckette committed
308
309
310
    glist_readfrombinbuf(x, b, "properties dialog", 0);
    newone = 0;
        /* take the new object off the list */
311
312
313
314
315
    if (ntotal)
    {
        for (y = x->gl_list, nnew = 1; y2 = y->g_next;
            y = y2, nnew++)
                if (nnew == ntotal)
Miller Puckette's avatar
Miller Puckette committed
316
        {
317
318
319
320
            newone = y2;
            gobj_vis(newone, x, 0);
            y->g_next = y2->g_next;
            break;    
Miller Puckette's avatar
Miller Puckette committed
321
322
        }
    }
323
    else gobj_vis((newone = x->gl_list), x, 0), x->gl_list = newone->g_next;
Miller Puckette's avatar
Miller Puckette committed
324
325
326
327
    if (!newone)
        error("couldn't update properties (perhaps a format problem?)");
    else if (!oldone)
        bug("data_properties: couldn't find old element");
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
    else if (newone->g_pd == scalar_class && oldone->g_pd == scalar_class
        && ((t_scalar *)newone)->sc_template ==
            ((t_scalar *)oldone)->sc_template 
        && (template = template_findbyname(((t_scalar *)newone)->sc_template)))
    {
            /* copy new one to old one and delete new one */
        memcpy(&((t_scalar *)oldone)->sc_vec, &((t_scalar *)newone)->sc_vec,
            template->t_n * sizeof(t_word));
        pd_free(&newone->g_pd);
        if (glist_isvisible(x))
        {
            gobj_vis(oldone, x, 0);
            gobj_vis(oldone, x, 1);
        }
    }
Miller Puckette's avatar
Miller Puckette committed
343
344
    else
    {
345
            /* delete old one; put new one where the old one was on glist */
Miller Puckette's avatar
Miller Puckette committed
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
        glist_delete(x, oldone);
        if (scindex > 0)
        {
            for (y = x->gl_list, nnew = 1; y;
                y = y->g_next, nnew++)
                    if (nnew == scindex || !y->g_next)
            {
                newone->g_next = y->g_next;
                y->g_next = newone;
                goto didit;
            }
            bug("data_properties: can't reinsert");
        }
        else newone->g_next = x->gl_list, x->gl_list = newone;
    }
361
362
    // here we check for changes in scrollbar due to potential repositioning
    canvas_getscroll(x);
Miller Puckette's avatar
Miller Puckette committed
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
didit:
    ;
}

    /* ----------- routines to write data to a binbuf ----------- */

void canvas_doaddtemplate(t_symbol *templatesym, 
    int *p_ntemplates, t_symbol ***p_templatevec)
{
    int n = *p_ntemplates, i;
    t_symbol **templatevec = *p_templatevec;
    for (i = 0; i < n; i++)
        if (templatevec[i] == templatesym)
            return;
    templatevec = (t_symbol **)t_resizebytes(templatevec,
        n * sizeof(*templatevec), (n+1) * sizeof(*templatevec));
    templatevec[n] = templatesym;
    *p_templatevec = templatevec;
    *p_ntemplates = n+1;
}

static void glist_writelist(t_gobj *y, t_binbuf *b);

void canvas_writescalar(t_symbol *templatesym, t_word *w, t_binbuf *b,
    int amarrayelement)
{
    t_template *template = template_findbyname(templatesym);
    t_atom *a = (t_atom *)t_getbytes(0);
    int i, n = template->t_n, natom = 0;
    if (!amarrayelement)
    {
        t_atom templatename;
        SETSYMBOL(&templatename, gensym(templatesym->s_name + 3));
        binbuf_add(b, 1, &templatename);
    }
    if (!template)
        bug("canvas_writescalar");
        /* write the atoms (floats and symbols) */
    for (i = 0; i < n; i++)
    {
        if (template->t_vec[i].ds_type == DT_FLOAT ||
            template->t_vec[i].ds_type == DT_SYMBOL)
        {
            a = (t_atom *)t_resizebytes(a,
                natom * sizeof(*a), (natom + 1) * sizeof (*a));
            if (template->t_vec[i].ds_type == DT_FLOAT)
                SETFLOAT(a + natom, w[i].w_float);
            else SETSYMBOL(a + natom,  w[i].w_symbol);
            natom++;
        }
    }
        /* array elements have to have at least something */
    if (natom == 0 && amarrayelement)
        SETSYMBOL(a + natom,  &s_bang), natom++;
    binbuf_add(b, natom, a);
    binbuf_addsemi(b);
    t_freebytes(a, natom * sizeof(*a));
    for (i = 0; i < n; i++)
    {
        if (template->t_vec[i].ds_type == DT_ARRAY)
        {
            int j;
            t_array *a = w[i].w_array;
            int elemsize = a->a_elemsize, nitems = a->a_n;
427
            t_symbol *arraytemplatesym = template->t_vec[i].ds_fieldtemplate;
Miller Puckette's avatar
Miller Puckette committed
428
429
430
431
432
433
434
            for (j = 0; j < nitems; j++)
                canvas_writescalar(arraytemplatesym,
                    (t_word *)(((char *)a->a_vec) + elemsize * j), b, 1);
            binbuf_addsemi(b);
        }
        else if (template->t_vec[i].ds_type == DT_LIST)
        {
435
//            glist_writelist(w->w_list->gl_list, b);
Miller Puckette's avatar
Miller Puckette committed
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
            binbuf_addsemi(b);
        }
    }
}

static void glist_writelist(t_gobj *y, t_binbuf *b)
{
    for (; y; y = y->g_next)
    {
        if (pd_class(&y->g_pd) == scalar_class)
        {
            canvas_writescalar(((t_scalar *)y)->sc_template,
                ((t_scalar *)y)->sc_vec, b, 0);
        }
    }
}

    /* ------------ routines to write out templates for data ------- */

static void canvas_addtemplatesforlist(t_gobj *y,
    int  *p_ntemplates, t_symbol ***p_templatevec);

static void canvas_addtemplatesforscalar(t_symbol *templatesym,
    t_word *w, int *p_ntemplates, t_symbol ***p_templatevec)
{
    t_dataslot *ds;
    int i;
    t_template *template = template_findbyname(templatesym);
    canvas_doaddtemplate(templatesym, p_ntemplates, p_templatevec);
    if (!template)
        bug("canvas_addtemplatesforscalar");
    else for (ds = template->t_vec, i = template->t_n; i--; ds++, w++)
    {
        if (ds->ds_type == DT_ARRAY)
        {
            int j;
            t_array *a = w->w_array;
            int elemsize = a->a_elemsize, nitems = a->a_n;
474
            t_symbol *arraytemplatesym = ds->ds_fieldtemplate;
Miller Puckette's avatar
Miller Puckette committed
475
476
477
478
479
480
481
            canvas_doaddtemplate(arraytemplatesym, p_ntemplates, p_templatevec);
            for (j = 0; j < nitems; j++)
                canvas_addtemplatesforscalar(arraytemplatesym,
                    (t_word *)(((char *)a->a_vec) + elemsize * j), 
                        p_ntemplates, p_templatevec);
        }
        else if (ds->ds_type == DT_LIST)
482
483
484
485
        {
//            canvas_addtemplatesforlist(w->w_list->gl_list,
//                p_ntemplates, p_templatevec);
        }
Miller Puckette's avatar
Miller Puckette committed
486
487
488
    }
}

489
490
491
492
493
494
495
496
497
498
499
500
static void canvas_addtemplatesforstruct(t_template *template,
    int *p_ntemplates, t_symbol ***p_templatevec)
{
    t_dataslot *ds;
    int i;
    canvas_doaddtemplate(template->t_sym, p_ntemplates, p_templatevec);
    if (!template)
        bug("canvas_addtemplatesforscalar");
    else for (ds = template->t_vec, i = template->t_n; i--; ds++)
    {
        if (ds->ds_type == DT_ARRAY)
        {
501
            t_symbol *arraytemplatesym = ds->ds_fieldtemplate;
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
            t_template *arraytemplate = template_findbyname(arraytemplatesym);
            if (arraytemplate)
            {
                canvas_doaddtemplate(arraytemplatesym, p_ntemplates,
                    p_templatevec);
                canvas_addtemplatesforstruct(arraytemplate,
                        p_ntemplates, p_templatevec);
            }
        }
        /* not sure about this part-- all the sublist datatype seems
           to do is crash */
        //else if (ds->ds_type == DT_LIST)
        //    canvas_addtemplatesforlist(w->w_list->gl_list,
        //        p_ntemplates, p_templatevec);
    }
}

Miller Puckette's avatar
Miller Puckette committed
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
static void canvas_addtemplatesforlist(t_gobj *y,
    int  *p_ntemplates, t_symbol ***p_templatevec)
{
    for (; y; y = y->g_next)
    {
        if (pd_class(&y->g_pd) == scalar_class)
        {
            canvas_addtemplatesforscalar(((t_scalar *)y)->sc_template,
                ((t_scalar *)y)->sc_vec, p_ntemplates, p_templatevec);
        }
    }
}

    /* write all "scalars" in a glist to a binbuf. */
t_binbuf *glist_writetobinbuf(t_glist *x, int wholething)
{
    int i;
    t_symbol **templatevec = getbytes(0);
    int ntemplates = 0;
    t_gobj *y;
    t_binbuf *b = binbuf_new();

    for (y = x->gl_list; y; y = y->g_next)
    {
        if ((pd_class(&y->g_pd) == scalar_class) &&
            (wholething || glist_isselected(x, y)))
        {
            canvas_addtemplatesforscalar(((t_scalar *)y)->sc_template,
                ((t_scalar *)y)->sc_vec,  &ntemplates, &templatevec);
        }
    }
    binbuf_addv(b, "s;", gensym("data"));
    for (i = 0; i < ntemplates; i++)
    {
        t_template *template = template_findbyname(templatevec[i]);
        int j, m = template->t_n;
            /* drop "pd-" prefix from template symbol to print it: */
        binbuf_addv(b, "ss;", gensym("template"),
            gensym(templatevec[i]->s_name + 3));
        for (j = 0; j < m; j++)
        {
            t_symbol *type;
            switch (template->t_vec[j].ds_type)
            {
                case DT_FLOAT: type = &s_float; break;
                case DT_SYMBOL: type = &s_symbol; break;
                case DT_ARRAY: type = gensym("array"); break;
                case DT_LIST: type = &s_list; break;
                default: type = &s_float; bug("canvas_write");
            }
            if (template->t_vec[j].ds_type == DT_ARRAY)
                binbuf_addv(b, "sss;", type, template->t_vec[j].ds_name,
571
                    gensym(template->t_vec[j].ds_fieldtemplate->s_name + 3));
Miller Puckette's avatar
Miller Puckette committed
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
            else binbuf_addv(b, "ss;", type, template->t_vec[j].ds_name);
        }
        binbuf_addsemi(b);
    }
    binbuf_addsemi(b);
        /* now write out the objects themselves */
    for (y = x->gl_list; y; y = y->g_next)
    {
        if ((pd_class(&y->g_pd) == scalar_class) &&
            (wholething || glist_isselected(x, y)))
        {
            canvas_writescalar(((t_scalar *)y)->sc_template,
                ((t_scalar *)y)->sc_vec,  b, 0);
        }
    }
    return (b);
}

static void glist_write(t_glist *x, t_symbol *filename, t_symbol *format)
{
Mathieu L Bouchard's avatar
Mathieu L Bouchard committed
592
    int cr = 0;
Miller Puckette's avatar
Miller Puckette committed
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
    t_binbuf *b;
    char buf[MAXPDSTRING];
    t_canvas *canvas = glist_getcanvas(x);
    canvas_makefilename(canvas, filename->s_name, buf, MAXPDSTRING);
    if (!strcmp(format->s_name, "cr"))
        cr = 1;
    else if (*format->s_name)
        error("qlist_read: unknown flag: %s", format->s_name);
    
    b = glist_writetobinbuf(x, 1);
    if (b)
    {
        if (binbuf_write(b, buf, "", cr))
            error("%s: write failed", filename->s_name);
        binbuf_free(b);
    }
}

/* ------ routines to save and restore canvases (patches) recursively. ----*/

    /* save to a binbuf, called recursively; cf. canvas_savetofile() which
    saves the document, and is only called on root canvases. */
static void canvas_saveto(t_canvas *x, t_binbuf *b)
{
    t_gobj *y;
    t_linetraverser t;
    t_outconnect *oc;
        /* subpatch */
    if (x->gl_owner && !x->gl_env)
    {
        /* have to go to original binbuf to find out how we were named. */
624
        //fprintf(stderr,"saving subpatch\n");
Miller Puckette's avatar
Miller Puckette committed
625
        t_binbuf *bz = binbuf_new();
626
627
        t_symbol *patchsym, *selector;
        int name_index;
Miller Puckette's avatar
Miller Puckette committed
628
        binbuf_addbinbuf(bz, x->gl_obj.ob_binbuf);
629
630
631
632
633
634
635
636
        selector = atom_getsymbolarg(0, binbuf_getnatom(bz), binbuf_getvec(bz));
        /* For [draw group] we save the name as the third argument. This
           is rather obscure but it might be handy if people want to
           dynamically create objects inside a [draw group] */
        if (selector == gensym("draw")) name_index = 2;
        else name_index = 1;
        patchsym = atom_getsymbolarg(name_index,
            binbuf_getnatom(bz), binbuf_getvec(bz));
Miller Puckette's avatar
Miller Puckette committed
637
638
639
640
641
642
643
644
        binbuf_free(bz);
        binbuf_addv(b, "ssiiiisi;", gensym("#N"), gensym("canvas"),
            (int)(x->gl_screenx1),
            (int)(x->gl_screeny1),
            (int)(x->gl_screenx2 - x->gl_screenx1),
            (int)(x->gl_screeny2 - x->gl_screeny1),
            (patchsym != &s_ ? patchsym: gensym("(subpatch)")),
            x->gl_mapped);
645
        t_text *xt = (t_text *)x;
Miller Puckette's avatar
Miller Puckette committed
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
    }
        /* root or abstraction */
    else 
    {
        binbuf_addv(b, "ssiiiii;", gensym("#N"), gensym("canvas"),
            (int)(x->gl_screenx1),
            (int)(x->gl_screeny1),
            (int)(x->gl_screenx2 - x->gl_screenx1),
            (int)(x->gl_screeny2 - x->gl_screeny1),
                (int)x->gl_font);
        canvas_savedeclarationsto(x, b);
    }
    for (y = x->gl_list; y; y = y->g_next)
        gobj_save(y, b);

    linetraverser_start(&t, x);
    while (oc = linetraverser_next(&t))
    {
664
665
666
667
668
669
670
        if (outconnect_visible(oc))
        {
            int srcno = canvas_getindex(x, &t.tr_ob->ob_g);
            int sinkno = canvas_getindex(x, &t.tr_ob2->ob_g);
            binbuf_addv(b, "ssiiii;", gensym("#X"), gensym("connect"),
                srcno, t.tr_outno, sinkno, t.tr_inno);
        }
Miller Puckette's avatar
Miller Puckette committed
671
672
673
674
675
676
677
678
679
680
681
682
683
    }
        /* unless everything is the default (as in ordinary subpatches)
        print out a "coords" message to set up the coordinate systems */
    if (x->gl_isgraph || x->gl_x1 || x->gl_y1 ||
        x->gl_x2 != 1 ||  x->gl_y2 != 1 || x->gl_pixwidth || x->gl_pixheight)
    {
        if (x->gl_isgraph && x->gl_goprect)
                /* if we have a graph-on-parent rectangle, we're new style.
                The format is arranged so
                that old versions of Pd can at least do something with it. */
            binbuf_addv(b, "ssfffffffff;", gensym("#X"), gensym("coords"),
                x->gl_x1, x->gl_y1,
                x->gl_x2, x->gl_y2,
684
685
686
                (t_float)x->gl_pixwidth, (t_float)x->gl_pixheight,
                (t_float)((x->gl_hidetext)?2.:1.),
                (t_float)x->gl_xmargin, (t_float)x->gl_ymargin); 
Miller Puckette's avatar
Miller Puckette committed
687
688
689
690
                    /* otherwise write in 0.38-compatible form */
        else binbuf_addv(b, "ssfffffff;", gensym("#X"), gensym("coords"),
                x->gl_x1, x->gl_y1,
                x->gl_x2, x->gl_y2,
691
692
                (t_float)x->gl_pixwidth, (t_float)x->gl_pixheight,
                (t_float)x->gl_isgraph);
Miller Puckette's avatar
Miller Puckette committed
693
694
695
    }
}

696
697
698
/* yuck, wish I didn't have to do this... */
extern t_class *gtemplate_class;

Miller Puckette's avatar
Miller Puckette committed
699
700
701
702
703
704
705
706
707
708
709
710
711
    /* call this recursively to collect all the template names for
    a canvas or for the selection. */
static void canvas_collecttemplatesfor(t_canvas *x, int *ntemplatesp,
    t_symbol ***templatevecp, int wholething)
{
    t_gobj *y;

    for (y = x->gl_list; y; y = y->g_next)
    {
        if ((pd_class(&y->g_pd) == scalar_class) &&
            (wholething || glist_isselected(x, y)))
                canvas_addtemplatesforscalar(((t_scalar *)y)->sc_template,
                    ((t_scalar *)y)->sc_vec,  ntemplatesp, templatevecp);
712
713
714
715
        else if ((pd_class(&y->g_pd) == gtemplate_class) &&
            (wholething || glist_isselected(x, y)))
                canvas_addtemplatesforstruct(gtemplate_get((t_gtemplate *)y),
                    ntemplatesp, templatevecp);
Miller Puckette's avatar
Miller Puckette committed
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
        else if ((pd_class(&y->g_pd) == canvas_class) &&
            (wholething || glist_isselected(x, y)))
                canvas_collecttemplatesfor((t_canvas *)y,
                    ntemplatesp, templatevecp, 1);
    }
}

    /* save the templates needed by a canvas to a binbuf. */
static void canvas_savetemplatesto(t_canvas *x, t_binbuf *b, int wholething)
{
    t_symbol **templatevec = getbytes(0);
    int i, ntemplates = 0;
    canvas_collecttemplatesfor(x, &ntemplates, &templatevec, wholething);
    for (i = 0; i < ntemplates; i++)
    {
        t_template *template = template_findbyname(templatevec[i]);
        int j, m = template->t_n;
        if (!template)
        {
            bug("canvas_savetemplatesto");
            continue;
        }
            /* drop "pd-" prefix from template symbol to print */
        binbuf_addv(b, "sss", &s__N, gensym("struct"),
            gensym(templatevec[i]->s_name + 3));
        for (j = 0; j < m; j++)
        {
            t_symbol *type;
            switch (template->t_vec[j].ds_type)
            {
                case DT_FLOAT: type = &s_float; break;
                case DT_SYMBOL: type = &s_symbol; break;
                case DT_ARRAY: type = gensym("array"); break;
                case DT_LIST: type = &s_list; break;
                default: type = &s_float; bug("canvas_write");
            }
            if (template->t_vec[j].ds_type == DT_ARRAY)
                binbuf_addv(b, "sss", type, template->t_vec[j].ds_name,
754
                    gensym(template->t_vec[j].ds_fieldtemplate->s_name + 3));
Miller Puckette's avatar
Miller Puckette committed
755
756
757
758
759
760
761
            else binbuf_addv(b, "ss", type, template->t_vec[j].ds_name);
        }
        binbuf_addsemi(b);
    }
}

void canvas_reload(t_symbol *name, t_symbol *dir, t_gobj *except);
762
extern void canvasgop_checksize(t_canvas *x);
Miller Puckette's avatar
Miller Puckette committed
763
764
765

    /* save a "root" canvas to a file; cf. canvas_saveto() which saves the
    body (and which is called recursively.) */
766
767
static void canvas_savetofile(t_canvas *x, t_symbol *filename, t_symbol *dir,
    t_floatarg fdestroy)
Miller Puckette's avatar
Miller Puckette committed
768
769
770
771
772
773
774
775
776
{
    t_binbuf *b = binbuf_new();
    canvas_savetemplatesto(x, b, 1);
    canvas_saveto(x, b);
    if (binbuf_write(b, filename->s_name, dir->s_name, 0)) sys_ouch();
    else
    {
            /* if not an abstraction, reset title bar and directory */ 
        if (!x->gl_owner)
Hans-Christoph Steiner's avatar
Hans-Christoph Steiner committed
777
        {
Miller Puckette's avatar
Miller Puckette committed
778
            canvas_rename(x, filename, dir);
Hans-Christoph Steiner's avatar
Hans-Christoph Steiner committed
779
780
781
            /* update window list in case Save As changed the window name */
            canvas_updatewindowlist(); 
        }
Miller Puckette's avatar
Miller Puckette committed
782
783
        post("saved to: %s/%s", dir->s_name, filename->s_name);
        canvas_dirty(x, 0);
784
785
        if (x->gl_isgraph)
            canvasgop_checksize(x);
Miller Puckette's avatar
Miller Puckette committed
786
        canvas_reload(filename, dir, &x->gl_gobj);
787
788
        if (fdestroy != 0)
            vmess(&x->gl_pd, gensym("menuclose"), "f", 1.);
Miller Puckette's avatar
Miller Puckette committed
789
790
791
792
    }
    binbuf_free(b);
}

793
static void canvas_menusaveas(t_canvas *x, t_floatarg fdestroy)
Miller Puckette's avatar
Miller Puckette committed
794
795
{
    t_canvas *x2 = canvas_getrootfor(x);
796
    gui_vmess("gui_canvas_saveas", "xssi", x2, x2->gl_name->s_name, canvas_getdir(x2)->s_name, fdestroy != 0);
Miller Puckette's avatar
Miller Puckette committed
797
798
}

799
static void canvas_menusave(t_canvas *x, t_floatarg fdestroy)
Miller Puckette's avatar
Miller Puckette committed
800
801
802
803
{
    t_canvas *x2 = canvas_getrootfor(x);
    char *name = x2->gl_name->s_name;
    if (*name && strncmp(name, "Untitled", 8)
Hans-Christoph Steiner's avatar
Hans-Christoph Steiner committed
804
805
            && (strlen(name) < 4 || strcmp(name + strlen(name)-4, ".pat")
                || strcmp(name + strlen(name)-4, ".mxt")))
806
807
            canvas_savetofile(x2, x2->gl_name, canvas_getdir(x2), fdestroy);
    else canvas_menusaveas(x2, fdestroy);
Miller Puckette's avatar
Miller Puckette committed
808
809
810
811
812
813
814
815
816
817
818
}

void g_readwrite_setup(void)
{
    class_addmethod(canvas_class, (t_method)glist_write,
        gensym("write"), A_SYMBOL, A_DEFSYM, A_NULL);
    class_addmethod(canvas_class, (t_method)glist_read,
        gensym("read"), A_SYMBOL, A_DEFSYM, A_NULL);
    class_addmethod(canvas_class, (t_method)glist_mergefile,
        gensym("mergefile"), A_SYMBOL, A_DEFSYM, A_NULL);
    class_addmethod(canvas_class, (t_method)canvas_savetofile,
819
        gensym("savetofile"), A_SYMBOL, A_SYMBOL, A_DEFFLOAT, 0);
Miller Puckette's avatar
Miller Puckette committed
820
821
822
823
    class_addmethod(canvas_class, (t_method)canvas_saveto,
        gensym("saveto"), A_CANT, 0);
/* ------------------ from the menu ------------------------- */
    class_addmethod(canvas_class, (t_method)canvas_menusave,
824
        gensym("menusave"), A_DEFFLOAT, 0);
Miller Puckette's avatar
Miller Puckette committed
825
    class_addmethod(canvas_class, (t_method)canvas_menusaveas,
826
        gensym("menusaveas"), A_DEFFLOAT, 0);
Miller Puckette's avatar
Miller Puckette committed
827
}