From: Scott MacVicar <scottmac@php.net>
Date: Fri, 21 Nov 2008 22:05:03 +0000 (+0000)
Subject: MFH Add vasprintf() so the buffer can be automatically calculated, you need to efree... 
X-Git-Tag: php-5.3.0alpha2~105
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=bfbe9a34ab0cc9c59e3c1a31317ad9fa44cd98c0;p=php

MFH Add vasprintf() so the buffer can be automatically calculated, you need to efree this when done though!
---

diff --git a/main/snprintf.c b/main/snprintf.c
index 81998cf970..dbe7b10023 100644
--- a/main/snprintf.c
+++ b/main/snprintf.c
@@ -1268,6 +1268,30 @@ PHPAPI int ap_php_vsnprintf(char *buf, size_t len, const char *format, va_list a
 }
 /* }}} */
 
+PHPAPI int ap_php_vasprintf(char **buf, const char *format, va_list ap) /* {{{ */
+{
+	va_list ap2;
+	int cc;
+
+	va_copy(ap2, ap);
+	cc = ap_php_vsnprintf(NULL, 0, format, ap2);
+	va_end(ap2);
+
+	*buf = NULL;
+
+	if (cc >= 0) {
+		if ((*buf = emalloc(++cc)) != NULL) {
+			if ((cc = ap_php_vsnprintf(*buf, cc, format, ap)) < 0) {
+				efree(*buf);
+				*buf = NULL;
+			}
+		}
+	}
+
+	return cc;
+}
+/* }}} */
+
 /*
  * Local variables:
  * tab-width: 4
diff --git a/main/snprintf.h b/main/snprintf.h
index 3ba50259ff..c55d5cb35a 100644
--- a/main/snprintf.h
+++ b/main/snprintf.h
@@ -82,6 +82,7 @@ PHPAPI int ap_php_slprintf(char *buf, size_t len, const char *format,...);
 PHPAPI int ap_php_vslprintf(char *buf, size_t len, const char *format, va_list ap);
 PHPAPI int ap_php_snprintf(char *, size_t, const char *, ...);
 PHPAPI int ap_php_vsnprintf(char *, size_t, const char *, va_list ap);
+PHPAPI int ap_php_vasprintf(char **buf, const char *format, va_list ap);
 PHPAPI int php_sprintf (char* s, const char* format, ...) PHP_ATTRIBUTE_FORMAT(printf, 2, 3);
 PHPAPI char * php_gcvt(double value, int ndigit, char dec_point, char exponent, char *buf);
 PHPAPI char * php_conv_fp(register char format, register double num,
@@ -109,6 +110,11 @@ END_EXTERN_C()
 #endif
 #define vsnprintf ap_php_vsnprintf
 
+#ifdef vasprintf
+#undef vasprintf
+#endif
+#define vasprintf ap_php_vasprintf
+
 #ifdef sprintf
 #undef sprintf
 #endif