To be independent of the _ctype array. This makes it possible
to add printf support to the PBL without adding _ctype aswell.
Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
---
lib/vsprintf.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index b474202..7f6b161 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -21,6 +21,8 @@
/* we use this so that we can do without the ctype library */
#define is_digit(c) ((c) >= '0' && (c) <= '9')
+#define is_alpha(c) (((c) >= 'A' && (c) <= 'Z') || ((c) >= 'a' && (c) <= 'z'))
+#define is_alnum(c) (is_digit(c) || is_alpha(c))
static int skip_atoi(const char **s)
{
@@ -351,7 +353,7 @@ int vsnprintf(char *buf, size_t size, const char *fmt, va_list args)
/* get field width */
field_width = -1;
- if (isdigit(*fmt))
+ if (is_digit(*fmt))
field_width = skip_atoi(&fmt);
else if (*fmt == '*') {
++fmt;
@@ -367,7 +369,7 @@ int vsnprintf(char *buf, size_t size, const char *fmt, va_list args)
precision = -1;
if (*fmt == '.') {
++fmt;
- if (isdigit(*fmt))
+ if (is_digit(*fmt))
precision = skip_atoi(&fmt);
else if (*fmt == '*') {
++fmt;
@@ -422,7 +424,7 @@ int vsnprintf(char *buf, size_t size, const char *fmt, va_list args)
va_arg(args, void *),
field_width, precision, flags);
/* Skip all alphanumeric pointer suffixes */
- while (isalnum(fmt[1]))
+ while (is_alnum(fmt[1]))
fmt++;
continue;
--
2.1.3
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