Changeset a9763c6 in mainline for uspace/lib/c/generic/io/asprintf.c

Timestamp:

2014-08-28T12:26:00Z (10 years ago)

Author:

Martin Sucha <sucha14@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

794e368

Parents:

2cc1ec0

Message:

Add a very simple font viewer application

File:

• uspace/lib/c/generic/io/asprintf.c (modified) (2 diffs)

uspace/lib/c/generic/io/asprintf.c

@@ -76 +76 @@
  *             the newly allocated string.
  * @fmt        Format string.
+ * @args       Variable argument list
+ *
+ * @return Number of characters printed or a negative error code.
+ *
+ */
+int vasprintf(char **strp, const char *fmt, va_list args)
+{
+        va_list args2;
+        va_copy(args2, args);
+        int ret = vprintf_size(fmt, args2);
+        va_end(args2);
+        
+        if (ret > 0) {
+                *strp = malloc(STR_BOUNDS(ret) + 1);
+                if (*strp == NULL)
+                        return -1;
+                
+                vsnprintf(*strp, STR_BOUNDS(ret) + 1, fmt, args);
+        }
+        
+        return ret;
+}
+
+/** Allocate and print to string.
+ *
+ * @param strp Address of the pointer where to store the address of
+ *             the newly allocated string.
+ * @fmt        Format string.
  *
  * @return Number of characters printed or a negative error code.
@@ -84 +112 @@
         va_list args;
         va_start(args, fmt);
-        int ret = vprintf_size(fmt, args);
+        int ret = vasprintf(strp, fmt, args);
         va_end(args);
-        
-        if (ret > 0) {
-                *strp = malloc(STR_BOUNDS(ret) + 1);
-                if (*strp == NULL)
-                        return -1;
-                
-                va_start(args, fmt);
-                vsnprintf(*strp, STR_BOUNDS(ret) + 1, fmt, args);
-                va_end(args);
-        }
         
         return ret;