parse-util: introduce safe_atou16_full()

safe_atou16_full() is like safe_atou16() but also takes a base
parameter. safe_atou16() is then implemented as inline function on top
of it, passing 0 as base. Similar safe_atoux16() is reworked as inline
function too, with 16 as base.

2 files changed, 13 insertions, 29 deletions

diff --git a/src/basic/parse-util.c b/src/basic/parse-util.c
index fa5b4a353a..f0bf57916e 100644
--- a/src/basic/parse-util.c
+++ b/src/basic/parse-util.c
@@ -487,17 +487,18 @@ int safe_atou8(const char *s, uint8_t *ret) {
         return 0;
 }
 
-int safe_atou16(const char *s, uint16_t *ret) {
+int safe_atou16_full(const char *s, unsigned base, uint16_t *ret) {
         char *x = NULL;
         unsigned long l;
 
         assert(s);
         assert(ret);
+        assert(base <= 16);
 
         s += strspn(s, WHITESPACE);
 
         errno = 0;
-        l = strtoul(s, &x, 0);
+        l = strtoul(s, &x, base);
         if (errno > 0)
                 return -errno;
         if (!x || x == s || *x != 0)
@@ -531,30 +532,6 @@ int safe_atoi16(const char *s, int16_t *ret) {
         return 0;
 }
 
-int safe_atoux16(const char *s, uint16_t *ret) {
-        char *x = NULL;
-        unsigned long l;
-
-        assert(s);
-        assert(ret);
-
-        s += strspn(s, WHITESPACE);
-
-        errno = 0;
-        l = strtoul(s, &x, 16);
-        if (errno > 0)
-                return -errno;
-        if (!x || x == s || *x != 0)
-                return -EINVAL;
-        if (s[0] == '-')
-                return -ERANGE;
-        if ((unsigned long) (uint16_t) l != l)
-                return -ERANGE;
-
-        *ret = (uint16_t) l;
-        return 0;
-}
-
 int safe_atod(const char *s, double *ret_d) {
         _cleanup_(freelocalep) locale_t loc = (locale_t) 0;
         char *x = NULL;
diff --git a/src/basic/parse-util.h b/src/basic/parse-util.h
index 727422056a..82265fcd0c 100644
--- a/src/basic/parse-util.h
+++ b/src/basic/parse-util.h
@@ -51,10 +51,17 @@ int safe_atolli(const char *s, long long int *ret_i);
 
 int safe_atou8(const char *s, uint8_t *ret);
 
-int safe_atou16(const char *s, uint16_t *ret);
-int safe_atoi16(const char *s, int16_t *ret);
+int safe_atou16_full(const char *s, unsigned base, uint16_t *ret);
+
+static inline int safe_atou16(const char *s, uint16_t *ret) {
+        return safe_atou16_full(s, 0, ret);
+}
 
-int safe_atoux16(const char *s, uint16_t *ret);
+static inline int safe_atoux16(const char *s, uint16_t *ret) {
+        return safe_atou16_full(s, 16, ret);
+}
+
+int safe_atoi16(const char *s, int16_t *ret);
 
 static inline int safe_atou32(const char *s, uint32_t *ret_u) {
         assert_cc(sizeof(uint32_t) == sizeof(unsigned));