TimeMicros struct

src/timeutils.cpp

@@ -0,0 +1,107 @@
+/**
+ * Furnace Tracker - multi-system chiptune tracker
+ * Copyright (C) 2021-2025 tildearrow and contributors
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "timeutils.h"
+#include <fmt/printf.h>
+
+String TimeMicros::toString(signed char prec, unsigned char hms) {
+  String ret;
+  int actualSeconds=seconds;
+  int actualMicros=micros;
+  bool negative=(seconds<0);
+  if (seconds<0 && micros!=0) {
+    actualSeconds++;
+    actualMicros=1000000-micros;
+  }
+  if (negative) actualSeconds=-actualSeconds;
+
+  switch (hms) {
+    case 2: { // h:mm:ss
+      int h=actualSeconds/3600;
+      int m=(actualSeconds/60)%60;
+      int s=actualSeconds%60;
+
+      if (negative) {
+        ret=fmt::sprintf("-%d:%02d:%02d",h,m,s);
+      } else {
+        ret=fmt::sprintf("%d:%02d:%02d",h,m,s);
+      }
+      break;
+    }
+    case 1: { // m:ss
+      int m=actualSeconds/60;
+      int s=actualSeconds%60;
+      
+      if (negative) {
+        ret=fmt::sprintf("-%d:%02d",m,s);
+      } else {
+        ret=fmt::sprintf("%d:%02d",m,s);
+      }
+      break;
+    }
+    default: { // seconds
+      if (negative) {
+        ret=fmt::sprintf("-%d",actualSeconds);
+      } else {
+        ret=fmt::sprintf("%d",actualSeconds);
+      }
+      break;
+    }
+  }
+
+  if (prec<0) {
+    // automatic precision
+    prec=6;
+    int precMicros=actualMicros;
+    while ((precMicros%10)==0 && prec>1) {
+      prec--;
+      precMicros/=10;
+    }
+  }
+
+  if (prec>0) {
+    if (prec>6) prec=6;
+    switch (prec) {
+      case 1:
+        ret+=fmt::sprintf(".%01d",actualMicros/100000);
+        break;
+      case 2:
+        ret+=fmt::sprintf(".%02d",actualMicros/10000);
+        break;
+      case 3:
+        ret+=fmt::sprintf(".%03d",actualMicros/1000);
+        break;
+      case 4:
+        ret+=fmt::sprintf(".%04d",actualMicros/100);
+        break;
+      case 5:
+        ret+=fmt::sprintf(".%05d",actualMicros/10);
+        break;
+      case 6:
+        ret+=fmt::sprintf(".%06d",actualMicros);
+        break;
+    }
+  }
+
+  return ret;
+}
+
+TimeMicros TimeMicros::fromString(String s) {
+  return TimeMicros(0,0);
+}