Changeset ce52ae70 in mainline

Timestamp:

2013-09-14T15:35:04Z (11 years ago)

Author:

Martin Sucha <sucha14@…>

Branches:

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

Children:

279f90f

Parents:

eabce2e

Message:

Allow size of the string printed by printf to be determined by apps

Location:

uspace/lib/c

Files:

• generic/io/asprintf.c (modified) (2 diffs)
• include/stdio.h (modified) (1 diff)

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

@@ -50 +50 @@
 }
 
+int vprintf_size(const char *fmt, va_list args)
+{
+        printf_spec_t ps = {
+                asprintf_str_write,
+                asprintf_wstr_write,
+                NULL
+        };
+        
+        return printf_core(fmt, &ps, args);
+}
+
+int printf_size(const char *fmt, ...)
+{
+        va_list args;
+        va_start(args, fmt);
+        int ret = vprintf_size(fmt, args);
+        va_end(args);
+        
+        return ret;
+}
+
 /** Allocate and print to string.
  *
@@ -61 +82 @@
 int asprintf(char **strp, const char *fmt, ...)
 {
-        printf_spec_t ps = {
-                asprintf_str_write,
-                asprintf_wstr_write,
-                NULL
-        };
-        
         va_list args;
         va_start(args, fmt);
-        
-        int ret = printf_core(fmt, &ps, args);
+        int ret = vprintf_size(fmt, args);
         va_end(args);
         

uspace/lib/c/include/stdio.h

@@ -124 +124 @@
 extern int vsnprintf(char *, size_t, const char *, va_list);
 
+extern int printf_size(const char *, ...)
+    PRINTF_ATTRIBUTE(1, 2);
+extern int vprintf_size(const char *, va_list);
+
 /* File stream functions */
 extern FILE *fopen(const char *, const char *);