Introduce METER_BUFFER_CHECK and METER_BUFFER_APPEND_CHR to cleanup writing to bar buffers

Closes: #294

1 files changed, 10 insertions, 25 deletions

diff --git a/linux/ZramMeter.c b/linux/ZramMeter.c
index 35148871..e6b6937e 100644
--- a/linux/ZramMeter.c
+++ b/linux/ZramMeter.c
@@ -20,32 +20,17 @@ static void ZramMeter_updateValues(Meter* this, char* buffer, size_t size) {
    this->curItems = 1;
 
    written = Meter_humanUnit(buffer, this->values[0], size);
-   buffer += written;
-   size -= written;
-   if (size <= 0) {
-      return;
-   }
-   *buffer++ = '(';
-   size--;
-   if (size <= 0) {
-      return;
-   }
+   METER_BUFFER_CHECK(buffer, size, written);
+
+   METER_BUFFER_APPEND_CHR(buffer, size, '(');
+
    written = Meter_humanUnit(buffer, this->values[1], size);
-   buffer += written;
-   size -= written;
-   if (size <= 0) {
-      return;
-   }
-   *buffer++ = ')';
-   size--;
-   if (size <= 0) {
-      return;
-   }
-   *buffer++ = '/';
-   size--;
-   if (size <= 0) {
-      return;
-   }
+   METER_BUFFER_CHECK(buffer, size, written);
+
+   METER_BUFFER_APPEND_CHR(buffer, size, ')');
+
+   METER_BUFFER_APPEND_CHR(buffer, size, '/');
+
    Meter_humanUnit(buffer, this->total, size);
 }