Changed reading and writing of floating point numbers into configuration files to make it independent of the decimal point used in the current locale

CONTRIBUTORS

@@ -3013,3 +3013,5 @@ Stefan Hofmann <stefan.hofmann@t-online.de>
 Stefan Blochberger <Stefan.Blochberger@gmx.de>
  for suggesting to automatically display the progress display whenever replay of a
  recording is started
+ for suggesting that floating point numbers presented to the user shall be displayed
+ in the way defined by the current locale

HISTORY

@@ -7339,7 +7339,7 @@ Video Disk Recorder Revision History
 - Modified editing marks are now written to disk whenever the replay progress display
   gets hidden (thanks to Christoph Haubrich).
 
-2012-12-05: Version 1.7.33
+2012-12-06: Version 1.7.33
 
 - In order to be able to play TS recordings from other sources, in which there is
   more than one PMT PID in the PAT, 'int cPatPmtParser::PatPmt(void)' has been changed
@@ -7396,3 +7396,19 @@ Video Disk Recorder Revision History
 - The new option "Setup/Replay/Progress display time" can be used to activate
   automatically displaying the progress display whenever replay of a recording is
   started (suggested by Stefan Blochberger).
+- Changed reading and writing of floating point numbers into configuration files to
+  make it independent of the decimal point used in the current locale. All calls to
+  atof() have been replaced with the new function atod(), which makes sure the string
+  representation of a floating point number using a '.' as decimal point will be
+  handled correctly, even if the locale in use expects a ',' as the decimal point.
+  Plugins that read floating point numbers from their own configuration files will
+  also need to use atod() for this, or use a method of their own (this is not necessary
+  if values are stored in VDR's setup.conf file, because VDR takes care of this).
+  The reason for these changes is that floating point numbers presented to the user
+  shall be displayed in the way defined by the current locale (suggested by Stefan
+  Blochberger).
+  If you use plugins that store floating point values in configuration files of their
+  own and have not yet been adapted to this change, you should set
+  export LC_NUMERIC=C
+  before running VDR. Otherwise your plugin's configuration data may not be read or
+  written correctly.

config.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: config.c 2.30 2012/12/05 11:33:14 kls Exp $
+ * $Id: config.c 2.31 2012/12/06 09:00:23 kls Exp $
  */
 
 #include "config.h"
@@ -509,7 +509,7 @@ void cSetup::Store(const char *Name, int Value, const char *Plugin)
 
 void cSetup::Store(const char *Name, double &Value, const char *Plugin)
 {
-  Store(Name, cString::sprintf("%f", Value), Plugin);
+  Store(Name, dtoa(Value), Plugin);
 }
 
 bool cSetup::Load(const char *FileName)
@@ -630,24 +630,24 @@ bool cSetup::Parse(const char *Name, const char *Value)
   else if (!strcasecmp(Name, "UseDolbyDigital"))     UseDolbyDigital    = atoi(Value);
   else if (!strcasecmp(Name, "ChannelInfoPos"))      ChannelInfoPos     = atoi(Value);
   else if (!strcasecmp(Name, "ChannelInfoTime"))     ChannelInfoTime    = atoi(Value);
-  else if (!strcasecmp(Name, "OSDLeftP"))            OSDLeftP           = atof(Value);
-  else if (!strcasecmp(Name, "OSDTopP"))             OSDTopP            = atof(Value);
-  else if (!strcasecmp(Name, "OSDWidthP"))         { OSDWidthP          = atof(Value); ChkDoublePlausibility(OSDWidthP, 0.87); }
-  else if (!strcasecmp(Name, "OSDHeightP"))        { OSDHeightP         = atof(Value); ChkDoublePlausibility(OSDHeightP, 0.84); }
+  else if (!strcasecmp(Name, "OSDLeftP"))            OSDLeftP           = atod(Value);
+  else if (!strcasecmp(Name, "OSDTopP"))             OSDTopP            = atod(Value);
+  else if (!strcasecmp(Name, "OSDWidthP"))         { OSDWidthP          = atod(Value); ChkDoublePlausibility(OSDWidthP, 0.87); }
+  else if (!strcasecmp(Name, "OSDHeightP"))        { OSDHeightP         = atod(Value); ChkDoublePlausibility(OSDHeightP, 0.84); }
   else if (!strcasecmp(Name, "OSDLeft"))             OSDLeft            = atoi(Value);
   else if (!strcasecmp(Name, "OSDTop"))              OSDTop             = atoi(Value);
   else if (!strcasecmp(Name, "OSDWidth"))          { OSDWidth           = atoi(Value); OSDWidth &= ~0x07; } // OSD width must be a multiple of 8
   else if (!strcasecmp(Name, "OSDHeight"))           OSDHeight          = atoi(Value);
-  else if (!strcasecmp(Name, "OSDAspect"))           OSDAspect          = atof(Value);
+  else if (!strcasecmp(Name, "OSDAspect"))           OSDAspect          = atod(Value);
   else if (!strcasecmp(Name, "OSDMessageTime"))      OSDMessageTime     = atoi(Value);
   else if (!strcasecmp(Name, "UseSmallFont"))        UseSmallFont       = atoi(Value);
   else if (!strcasecmp(Name, "AntiAlias"))           AntiAlias          = atoi(Value);
   else if (!strcasecmp(Name, "FontOsd"))             Utf8Strn0Cpy(FontOsd, Value, MAXFONTNAME);
   else if (!strcasecmp(Name, "FontSml"))             Utf8Strn0Cpy(FontSml, Value, MAXFONTNAME);
   else if (!strcasecmp(Name, "FontFix"))             Utf8Strn0Cpy(FontFix, Value, MAXFONTNAME);
-  else if (!strcasecmp(Name, "FontOsdSizeP"))      { FontOsdSizeP       = atof(Value); ChkDoublePlausibility(FontOsdSizeP, 0.038); }
-  else if (!strcasecmp(Name, "FontSmlSizeP"))      { FontSmlSizeP       = atof(Value); ChkDoublePlausibility(FontSmlSizeP, 0.035); }
-  else if (!strcasecmp(Name, "FontFixSizeP"))      { FontFixSizeP       = atof(Value); ChkDoublePlausibility(FontFixSizeP, 0.031); }
+  else if (!strcasecmp(Name, "FontOsdSizeP"))      { FontOsdSizeP       = atod(Value); ChkDoublePlausibility(FontOsdSizeP, 0.038); }
+  else if (!strcasecmp(Name, "FontSmlSizeP"))      { FontSmlSizeP       = atod(Value); ChkDoublePlausibility(FontSmlSizeP, 0.035); }
+  else if (!strcasecmp(Name, "FontFixSizeP"))      { FontFixSizeP       = atod(Value); ChkDoublePlausibility(FontFixSizeP, 0.031); }
   else if (!strcasecmp(Name, "FontOsdSize"))         FontOsdSize        = atoi(Value);
   else if (!strcasecmp(Name, "FontSmlSize"))         FontSmlSize        = atoi(Value);
   else if (!strcasecmp(Name, "FontFixSize"))         FontFixSize        = atoi(Value);

recording.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: recording.c 2.77 2012/12/05 11:08:47 kls Exp $
+ * $Id: recording.c 2.78 2012/12/06 09:35:13 kls Exp $
  */
 
 #include "recording.h"
@@ -455,7 +455,7 @@ bool cRecordingInfo::Read(FILE *f)
                             }
                        }
                        break;
-             case 'F': framesPerSecond = atof(t);
+             case 'F': framesPerSecond = atod(t);
                        break;
              case 'L': lifetime = atoi(t);
                        break;
@@ -482,7 +482,7 @@ bool cRecordingInfo::Write(FILE *f, const char *Prefix) const
   if (channelID.Valid())
      fprintf(f, "%sC %s%s%s\n", Prefix, *channelID.ToString(), channelName ? " " : "", channelName ? channelName : "");
   event->Dump(f, Prefix, true);
-  fprintf(f, "%sF %.10g\n", Prefix, framesPerSecond);
+  fprintf(f, "%sF %s\n", Prefix, *dtoa(framesPerSecond, "%.10g"));
   fprintf(f, "%sP %d\n", Prefix, priority);
   fprintf(f, "%sL %d\n", Prefix, lifetime);
   if (aux)

tools.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: tools.c 2.27 2012/12/03 09:31:32 kls Exp $
+ * $Id: tools.c 2.28 2012/12/06 09:40:02 kls Exp $
  */
 
 #include "tools.h"
@@ -18,6 +18,7 @@ extern "C" {
 #include <jpeglib.h>
 #undef boolean
 }
+#include <locale.h>
 #include <stdlib.h>
 #include <sys/time.h>
 #include <sys/vfs.h>
@@ -302,6 +303,31 @@ cString AddDirectory(const char *DirName, const char *FileName)
   return cString::sprintf("%s/%s", DirName && *DirName ? DirName : ".", FileName);
 }
 
+double atod(const char *s)
+{
+  static lconv *loc = localeconv();
+  char buf[strlen(s) + 1];
+  char *p = buf;
+  while (*s) {
+        if (*s == '.')
+           *p = *loc->decimal_point;
+        else
+           *p = *s;
+        p++;
+        s++;
+        }
+  *p = 0;
+  return atof(buf);
+}
+
+cString dtoa(double d, const char *Format)
+{
+  static lconv *loc = localeconv();
+  char buf[16];
+  snprintf(buf, sizeof(buf), Format, d);
+  return strreplace(buf, *loc->decimal_point, '.');
+}
+
 cString itoa(int n)
 {
   char buf[16];

tools.h

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: tools.h 2.22 2012/09/30 11:02:21 kls Exp $
+ * $Id: tools.h 2.23 2012/12/06 08:59:39 kls Exp $
  */
 
 #ifndef __TOOLS_H
@@ -216,6 +216,14 @@ int64_t StrToNum(const char *s);
 bool StrInArray(const char *a[], const char *s);
     ///< Returns true if the string s is equal to one of the strings pointed
     ///< to by the (NULL terminated) array a.
+double atod(const char *s);
+    ///< Converts the given string, which is a floating point number using a '.' as
+    ///< the decimal point, to a double value, independent of the currently selected
+    ///< locale.
+cString dtoa(double d, const char *Format = "%f");
+    ///< Converts the given double value to a string, making sure it uses a '.' as
+    ///< the decimal point, independent of the currently selected locale.
+    ///< If Format is given, it will be used instead of the default.
 cString itoa(int n);
 cString AddDirectory(const char *DirName, const char *FileName);
 bool EntriesOnSameFileSystem(const char *File1, const char *File2);

vdr.c

@@ -22,7 +22,7 @@
  *
  * The project's page is at http://www.tvdr.de
  *
- * $Id: vdr.c 2.44 2012/12/04 12:55:02 kls Exp $
+ * $Id: vdr.c 2.45 2012/12/06 10:29:23 kls Exp $
  */
 
 #include <getopt.h>
@@ -174,7 +174,6 @@ int main(int argc, char *argv[])
   // Initiate locale:
 
   setlocale(LC_ALL, "");
-  setlocale(LC_NUMERIC, "C"); // makes sure any floating point numbers written use a decimal point
 
   // Command line options: