varbuf(v)printf now return the number of characters they added to the

buffer.

ChangeLog

@@ -1,3 +1,8 @@
+Fri Jan  5 22:25:06 CST 2001 Adam Heath <doogie@debian.org>
+
+  * lib/varbuf.c: varbuf(v)printf now return the number of characters
+    they added to the buffer.
+
 Thu Jan  4 01:20:27 CST 2001 Adam Heath <doogie@debian.org>
 
   * dpkg-deb/build.c, dpkg-deb/extract.c, dpkg-deb/info.c,

include/dpkg-db.h

@@ -226,6 +226,8 @@ struct varbuf;
 
 extern void varbufaddc(struct varbuf *v, int c);
 extern void varbufdupc(struct varbuf *v, int c, ssize_t s);
+int varbufprintf(struct varbuf *v, const char *fmt, ...) PRINTFFORMAT(2,3);
+int varbufvprintf(struct varbuf *v, const char *fmt, va_list va);
 void varbufinit(struct varbuf *v);
 void varbufreset(struct varbuf *v);
 void varbufextend(struct varbuf *v);
@@ -285,8 +287,6 @@ void writedb(const char *filename, int available, int mustsync);
 
 void varbufrecord(struct varbuf*, const struct pkginfo*, const struct pkginfoperfile*);
 void varbufdependency(struct varbuf *vb, struct dependency *dep);
-void varbufprintf(struct varbuf *v, const char *fmt, ...) PRINTFFORMAT(2,3);
-void varbufvprintf(struct varbuf *v, const char *fmt, va_list va);
   /* NB THE VARBUF MUST HAVE BEEN INITIALISED AND WILL NOT BE NULL-TERMINATED */
 
 /*** from vercmp.c ***/

lib/varbuf.c

@@ -43,7 +43,7 @@ void varbufdupc(struct varbuf *v, int c, ssize_t n) {
   }
 }
 
-void varbufprintf(struct varbuf *v, const char *fmt, ...) {
+int varbufprintf(struct varbuf *v, const char *fmt, ...) {
   int ou, r;
   va_list al;
 
@@ -58,9 +58,10 @@ void varbufprintf(struct varbuf *v, const char *fmt, ...) {
     if (r < 0) r= (v->size-ou+1) * 2;
     v->used= ou+r;
   } while (r >= v->size-ou-1);
+  return r;
 }
 
-void varbufvprintf(struct varbuf *v, const char *fmt, va_list va) {
+int varbufvprintf(struct varbuf *v, const char *fmt, va_list va) {
   int ou, r;
   va_list al;
 
@@ -74,6 +75,7 @@ void varbufvprintf(struct varbuf *v, const char *fmt, va_list va) {
     if (r < 0) r= (v->size-ou+1) * 2;
     v->used= ou+r;
   } while (r >= v->size-ou-1);
+  return r;
 }
 
 void varbufaddbuf(struct varbuf *v, const void *s, const int l) {