diff options
| -rw-r--r-- | common/tf_snprintf.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/common/tf_snprintf.c b/common/tf_snprintf.c index a99ab7ab..6df13772 100644 --- a/common/tf_snprintf.c +++ b/common/tf_snprintf.c @@ -8,6 +8,17 @@ #include <platform.h> #include <stdarg.h> +static void string_print(char **s, size_t n, size_t *chars_printed, + const char *str) +{ + while (*str) { + if (*chars_printed < n) + *(*s)++ = *str; + (*chars_printed)++; + str++; + } +} + static void unsigned_dec_print(char **s, size_t n, size_t *chars_printed, unsigned int unum) { @@ -32,6 +43,7 @@ static void unsigned_dec_print(char **s, size_t n, size_t *chars_printed, * The following type specifiers are supported: * * %d or %i - signed decimal format + * %s - string format * %u - unsigned decimal format * * The function panics on all other formats specifiers. @@ -45,6 +57,7 @@ int tf_snprintf(char *s, size_t n, const char *fmt, ...) va_list args; int num; unsigned int unum; + char *str; size_t chars_printed = 0; if (n == 1) { @@ -79,6 +92,10 @@ int tf_snprintf(char *s, size_t n, const char *fmt, ...) unsigned_dec_print(&s, n, &chars_printed, unum); break; + case 's': + str = va_arg(args, char *); + string_print(&s, n, &chars_printed, str); + break; case 'u': unum = va_arg(args, unsigned int); unsigned_dec_print(&s, n, &chars_printed, unum); |