add (v)asprintf for win32 (sent by Patrice Colet)

svn path=/trunk/; revision=11144

1 files changed, 87 insertions, 0 deletions

diff --git a/desiredata/src/desire.h b/desiredata/src/desire.h
index cb5a84d2..4f2329d3 100644
--- a/desiredata/src/desire.h
+++ b/desiredata/src/desire.h
@@ -306,6 +306,93 @@ EXTERN const char *inlet_tip(t_inlet* i,int num);
 extern t_hash<t_pd *,long> *object_table;
 extern t_hash<t_symbol *,t_class *> *class_table;
 
+#ifdef MSW
+
+#ifndef HAVE_VASPRINTF
+extern int vasprintf();
+#define HAVE_VASPRINTF
+#include <stdio.h>
+#include <errno.h>
+#include <limits.h>
+#include <stdarg.h>
+#include <stdlib.h>
+
+#ifndef VA_COPY
+# ifdef HAVE_VA_COPY
+#  define VA_COPY(dest, src) va_copy(dest, src)
+# else
+#  ifdef HAVE___VA_COPY
+#   define VA_COPY(dest, src) __va_copy(dest, src)
+#  else
+#   define VA_COPY(dest, src) (dest) = (src)
+#  endif
+# endif
+#endif
+
+#define INIT_SZ 128
+int vasprintf(char **str, const char *fmt, va_list ap)
+{
+        int ret = -1;
+        va_list ap2;
+        char *string, *newstr;
+        size_t len;
+
+        VA_COPY(ap2, ap);
+        if ((string = (char *)malloc(INIT_SZ)) == NULL)
+                goto fail;
+
+        ret = vsnprintf(string, INIT_SZ, fmt, ap2);
+        if (ret >= 0 && ret < INIT_SZ) { /* succeeded with initial alloc */
+                *str = string;
+        } else if (ret == INT_MAX || ret < 0) { /* Bad length */
+                goto fail;
+        } else {        /* bigger than initial, realloc allowing for nul */
+                len = (size_t)ret + 1;
+                if ((newstr = (char *)realloc(string, len)) == NULL) {
+                        free(string);
+                        goto fail;
+                } else {
+                        va_end(ap2);
+                        VA_COPY(ap2, ap);
+                        ret = vsnprintf(newstr, len, fmt, ap2);
+                        if (ret >= 0 && (size_t)ret < len) {
+                                *str = newstr;
+                        } else { /* failed with realloc'ed string, give up */
+                                free(newstr);
+                                goto fail;
+                        }
+                }
+        }
+        va_end(ap2);
+        return (ret);
+
+fail:
+        *str = NULL;
+        errno = ENOMEM;
+        va_end(ap2);
+        return (-1);
+}
+#endif /* HAVE_VASPRINTF */
+
+/* Include asprintf() */
+#ifndef HAVE_ASPRINTF	
+#define HAVE_ASPRINTF
+extern int asprintf();
+int asprintf(char **str, const char *fmt, ...)
+{
+        va_list ap;
+        int ret;
+        
+        *str = NULL;
+        va_start(ap, fmt);
+        ret = vasprintf(str, fmt, ap);
+        va_end(ap);
+
+        return ret;
+}
+#endif /* HAVE_ASPRINTF */
+#endif /* MSW */
+
 /* some kernel.c stuff that wasn't in any header, when shifting to C++. */
 void obj_moveinletfirst(t_object *x, t_inlet *i);
 void obj_moveoutletfirst(t_object *x, t_outlet *o);