implement the gnu asprintf/vasprintf extensions.

compiler/stdc/asprintf.c

@@ -0,0 +1,60 @@
+/*
+    Copyright (C) 2023, The AROS Development Team. All rights reserved.
+
+    GNU extension asprintf().
+*/
+#include <libraries/stdcio.h>
+
+#include <aros/debug.h>
+#if DEBUG
+#include <aros/libcall.h>
+#endif
+
+#include "debug.h"
+#define _GNU_SOURCE
+/*****************************************************************************
+
+    NAME */
+#include <stdio.h>
+#include <stdarg.h>
+
+        int asprintf (
+
+/*  SYNOPSIS */
+        char **restrict str, const char *restrict format, ...)
+
+/*  FUNCTION
+        Analog of sprintf, except that sotrage is allocated for a string
+        large enough to hold the output including the terminating null
+        byte
+
+    INPUTS
+        str - Where to store the pointer for the allocated string.
+        format - A printf() format string.
+        ... - Arguments for the format string
+
+    RESULT
+        The number of characters written, or EOF on error.
+
+    NOTES
+
+    EXAMPLE
+
+    BUGS
+
+    SEE ALSO
+        vasprintf(), sprintf(), vsprintf()
+
+    INTERNALS
+
+******************************************************************************/
+{
+    va_list args;
+    int size = 0;
+
+    va_start(args, format);
+    size = vasprintf(str, format, args);
+    va_end(args);
+
+    return size;
+}

compiler/stdc/include/aros/stdc/stdio.h

@@ -91,6 +91,9 @@ int fprintf(FILE * restrict stream, const char * restrict format, ...);
 int fscanf(FILE * restrict stream, const char * restrict format, ...);
 int printf(const char * restrict format, ...);
 int scanf(const char * restrict format, ...);
+#if defined(_GNU_SOURCE)
+int asprintf(char ** restrict str, const char * restrict format, ...);
+#endif
 int snprintf(char * restrict s, size_t n, const char * restrict format, ...);
 int sprintf(char * restrict s, const char * restrict format, ...);
 int sscanf(const char * restrict s, const char * restrict format, ...);
@@ -100,6 +103,10 @@ int vfscanf(FILE * restrict stream, const char * restrict format,
 	va_list arg);
 int vprintf(const char * restrict format, va_list arg);
 int vscanf(const char * restrict format, va_list arg);
+#if defined(_GNU_SOURCE)
+int vasprintf(char **restrict str, const char *restrict format,
+	va_list args);
+#endif
 int vsnprintf(char * restrict s, size_t n, const char * restrict format,
 	va_list arg);
 int vsprintf(char * restrict s, const char * restrict format,

compiler/stdc/mmakefile.src

@@ -366,6 +366,7 @@ STDC := \
     abort \
     abs labs llabs \
     asctime asctime_r \
+    asprintf \
     atexit \
     atof \
     atoi \
@@ -461,6 +462,7 @@ STDC := \
     strupr \
     strxfrm \
     time \
+    vasprintf \
     vsnprintf \
     vsprintf \
     vsscanf
@@ -585,6 +587,7 @@ STDC_STATIC := \
     __vcformat \
     __vcscan \
     abs labs llabs \
+    asprintf \
     atoi \
     atol \
     atoll \
@@ -633,6 +636,7 @@ STDC_STATIC := \
     strtof \
     strtol \
     strtoul \
+    vasprintf \
     vsnprintf \
     vsprintf \
     vsscanf

compiler/stdc/stdc.conf

@@ -1,5 +1,5 @@
 ##begin config
-version 0.15
+version 0.16
 basename StdC
 libbasetypeextern struct StdCBase
 libbasetype struct StdCIntBase
@@ -637,6 +637,9 @@ char *asctime_r(const struct tm *, char *)
 char *ctime_r(const time_t *, char *)
 struct tm *gmtime_r(const time_t *, struct tm *)
 struct tm *localtime_r(const time_t *, struct tm *)
+.skip 1
+int asprintf(char **restrict str, const char *restrict format, ...)
+int vasprintf(char * restrict s, const char * restrict format, ...)
 #
 # * wchar.h: mostly unimplemented in stdc.library
 #

compiler/stdc/vasprintf.c

@@ -0,0 +1,75 @@
+/*
+    Copyright (C) 2023, The AROS Development Team. All rights reserved.
+
+    GNU function vasprintf().
+*/
+#include <libraries/stdcio.h>
+
+#include <aros/debug.h>
+#if DEBUG
+#include <aros/libcall.h>
+#endif
+
+#include "debug.h"
+
+/*****************************************************************************
+
+    NAME */
+#include <stdio.h>
+#include <stdarg.h>
+#include <stdlib.h>
+
+        int vasprintf (
+
+/*  SYNOPSIS */
+        char **restrict str, const char *restrict format, va_list args)
+
+/*  FUNCTION
+        Analog of vsprintf, except that sotrage is allocated for a string
+        large enough to hold the output including the terminating null
+        byte
+
+    INPUTS
+        str - Where to store the pointer for the allocated string.
+        format - A printf() format string.
+        args - A list of arguments for the format string.
+
+    RESULT
+        The number of characters written, or EOF on error.
+
+    NOTES
+
+    EXAMPLE
+
+    BUGS
+
+    SEE ALSO
+        asprintf(), sprintf(), vsprintf()
+
+    INTERNALS
+
+******************************************************************************/
+{
+    va_list argtmp;
+    int size = 0;
+
+
+    va_copy(argtmp, args);
+    size = vsnprintf(NULL, 0, format, argtmp);
+    va_end(argtmp);
+
+    if (size < 0)
+    {
+        return -1;
+    }
+
+    *str = (char *) malloc(size + 1);
+    if (!*str)
+    {
+        return -1;
+    }
+
+    size = vsprintf(*str, format, args);
+
+    return size;
+}