percent-util: when parsing permyriads, permit percents too with 1 place after the dot

Previously, when parsing myriads, we'd support:

 x%          → percent, no places after the dot
 x.yz%       → percent, two places after the dot
 x‰          → permille, no places after the dot
 x.y‰        → permille, one place after the dot
 x‱          → permyriad, no places after the dot

What's missing is:

 x.y%        → percent, one place after the dot

Let's add it in.

1 files changed, 16 insertions, 4 deletions

diff --git a/src/basic/percent-util.c b/src/basic/percent-util.c
index f58a51dcf9..06f20fd61e 100644
--- a/src/basic/percent-util.c
+++ b/src/basic/percent-util.c
@@ -64,11 +64,23 @@ static int parse_parts_value_with_hundredths_place(const char *p, const char *sy
 
         dot = memchr(p, '.', pc - p);
         if (dot) {
-                if (dot + 3 != pc)
-                        return -EINVAL;
-                if (dot[1] < '0' || dot[1] > '9' || dot[2] < '0' || dot[2] > '9')
+                if (dot + 3 == pc) {
+                        /* Support two places after the dot */
+
+                        if (dot[1] < '0' || dot[1] > '9' || dot[2] < '0' || dot[2] > '9')
+                                return -EINVAL;
+                        q = (dot[1] - '0') * 10 + (dot[2] - '0');
+
+                } else if (dot + 2 == pc) {
+                        /* Support one place after the dot */
+
+                        if (dot[1] < '0' || dot[1] > '9')
+                                return -EINVAL;
+                        q = (dot[1] - '0') * 10;
+                } else
+                        /* We do not support zero or more than two places */
                         return -EINVAL;
-                q = (dot[1] - '0') * 10 + (dot[2] - '0');
+
                 n = strndupa(p, dot - p);
         } else {
                 q = 0;