shithub: neindaw

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piper: add Inst struct to hold instance data

--- a/piper/piper.c

+++ b/piper/piper.c

@@ -4,13 +4,19 @@

 #include <bio.h>

 #include "piper.h"

+typedef struct Inst Inst;

 typedef struct Group Group;

+struct Inst {

+	void *aux;

+	int data;

+};

+

 struct Group {

 	char *path;

 	Synth *synth;

-	void **aux;

-	int numaux;

+	Inst *inst;

+	int numinst;

 	int clone;

 };

@@ -44,7 +50,8 @@

 	if (g != nil) {

 		s++;

 		i = i36(*s);

-		while (i >= g->numaux) { /* instance needs to be created */

+		aux = nil;

+		while (i >= g->numinst) { /* instance needs to be created */

 			seek(g->clone, 0, 0);

 			if ((n = read(g->clone, tmp, sizeof(tmp))) < 1)

 				sysfatal("clone failed");

@@ -53,11 +60,15 @@

 				sysfatal("memory");

 			if ((aux = g->synth->alloc(path)) == nil)

 				return e;

-			if ((g->aux = realloc(g->aux, sizeof(void*)*(g->numaux+1))) == nil)

+			if ((g->inst = realloc(g->inst, sizeof(Inst)*(g->numinst+1))) == nil)

 				sysfatal("memory");

-			g->aux[g->numaux++] = aux;

+			if ((path = smprint("%s/%s/data", g->path, tmp)) == nil)

+				sysfatal("memory");

+			if ((g->inst[g->numinst].data = open(path, OREAD)) < 0)

+				sysfatal("couldn't open data: %r");

+			g->inst[g->numinst++].aux = aux;

+			free(path);

 		}

-		aux = g->aux[i];

 		memset(&c, 0, sizeof(c));

 		g->synth->cmd(aux, &c);

 	}