# HG changeset patch
# User Matti Hamalainen <ccr@tnsp.org>
# Date 1577762351 -7200
# Node ID edfe8ac12408e439c0399370dfa4a1f7bfeece14
# Parent  4d2e9c806b98ecab85d5abb05a89920d2f673879
Add function typedef th_vprintf_altfmt_func and #define
TH_VPRINTF_ALTFMT_FUNC macro for defining printf altfmt helpers and use
them. This breaks the API.

diff -r 4d2e9c806b98 -r edfe8ac12408 th_printf.c
--- a/th_printf.c	Tue Dec 31 05:16:58 2019 +0200
+++ b/th_printf.c	Tue Dec 31 05:19:11 2019 +0200
@@ -114,7 +114,7 @@
 #include "th_printf1.c"
 
 
-char * th_vprintf_altfmt_oct(const char *buf, const size_t len, const int vret, const int flags)
+TH_VPRINTF_ALTFMT_FUNC(th_vprintf_altfmt_oct)
 {
     (void) vret;
     (void) flags;
@@ -123,7 +123,7 @@
 }
 
 
-char * th_vprintf_altfmt_hex(const char *buf, const size_t len, const int vret, const int flags)
+TH_VPRINTF_ALTFMT_FUNC(th_vprintf_altfmt_hex)
 {
     (void) buf;
     (void) len;
@@ -137,7 +137,7 @@
 
 int th_vprintf_put_int_format(th_vprintf_ctx *ctx, th_vprintf_putch vputch,
     char *buf, int f_flags, int f_width, int f_prec, int f_len, int vret,
-    BOOL f_neg, BOOL f_unsig, char *(f_alt)(const char *buf, const size_t blen, const int vret, const int flags))
+    BOOL f_neg, BOOL f_unsig, th_vprintf_altfmt_func f_alt)
 {
     int ret = 0, nspacepad, nzeropad;
     char f_sign, *f_altstr;
@@ -237,7 +237,7 @@
 
 int th_vprintf_put_int(th_vprintf_ctx *ctx, th_vprintf_putch vputch,
     va_list ap, const int f_radix, int f_flags, int f_width, int f_prec,
-    const BOOL f_unsig, char *(f_alt)(const char *buf, const size_t blen, const int vret, const int flags))
+    const BOOL f_unsig, th_vprintf_altfmt_func f_alt)
 {
     char buf[32];
     int f_len = 0, vret;
diff -r 4d2e9c806b98 -r edfe8ac12408 th_string.h
--- a/th_string.h	Tue Dec 31 05:16:58 2019 +0200
+++ b/th_string.h	Tue Dec 31 05:19:11 2019 +0200
@@ -121,18 +121,28 @@
 
 /* Internal printf() implementation. NOTICE! This API may be unstable.
  */
+#define TH_VPRINTF_ALTFMT_FUNC(fname) char * fname ( \
+    const char *buf, const size_t len, const int vret, const int flags)
+
+typedef char * (*th_vprintf_altfmt_func)(
+    const char *buf, const size_t len, const int vret, const int flags);
+
+
 int     th_vprintf_do(th_vprintf_ctx *ctx, th_vprintf_putch vputch, const char *fmt, va_list ap);
 int     th_vprintf_put_str(th_vprintf_ctx *ctx, th_vprintf_putch vputch,
         const char *str, int f_flags, const int f_width, const int f_prec);
+
 int 	th_vprintf_put_int(th_vprintf_ctx *ctx, th_vprintf_putch vputch,
         va_list ap, const int f_radix, int f_flags, int f_width, int f_prec,
-        const BOOL f_unsig, char *(f_alt)(const char *buf, const size_t blen, const int vret, const int flags));
-int	 th_vprintf_put_int_format(th_vprintf_ctx *ctx, th_vprintf_putch vputch,
+        const BOOL f_unsig, th_vprintf_altfmt_func f_alt);
+
+int	th_vprintf_put_int_format(th_vprintf_ctx *ctx, th_vprintf_putch vputch,
         char *buf, int f_flags, int f_width, int f_prec, int f_len, int vret,
-        BOOL f_neg, BOOL f_unsig, char *(f_alt)(const char *buf, const size_t blen, const int vret, const int flags));
+        BOOL f_neg, BOOL f_unsig, th_vprintf_altfmt_func f_alt);
+
 
-char *  th_vprintf_altfmt_oct(const char *buf, const size_t len, const int vret, const int flags);
-char *  th_vprintf_altfmt_hex(const char *buf, const size_t len, const int vret, const int flags);
+TH_VPRINTF_ALTFMT_FUNC(th_vprintf_altfmt_oct);
+TH_VPRINTF_ALTFMT_FUNC(th_vprintf_altfmt_hex);
 
 
 #define TH_PFUNC_NAME th_vprintf_buf_int