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Fixed build when OSG_ENVVAR_SUPPORTED is disabled and quietened down warnings using OSG_UNUSED* macros

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This commit is contained in:
Robert Osfield 2018-05-10 18:58:29 +01:00
parent b1daa6a693
commit be363ef8d4
3 changed files with 22 additions and 1 deletions
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7
include/osg/Export
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@ -56,6 +56,13 @@
#endif
#endif
// helper macro's for quieten unused variable warnings
#define OSG_UNUSED(VAR) (void)(VAR)
#define OSG_UNUSED2(VAR1, VAR2) (void)(VAR1); (void)(VAR2);
#define OSG_UNUSED3(VAR1, VAR2, VAR3) (void)(VAR1); (void)(VAR2); (void)(VAR2);
#define OSG_UNUSED4(VAR1, VAR2, VAR3, VAR4) (void)(VAR1); (void)(VAR2); (void)(VAR3); (void)(VAR4);
#define OSG_UNUSED5(VAR1, VAR2, VAR3, VAR4, VAR5) (void)(VAR1); (void)(VAR2); (void)(VAR3); (void)(VAR4); (void)(VAR5);
/**
\namespace osg

14
include/osg/os_utils
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@ -30,6 +30,8 @@ extern OSG_EXPORT int osg_system(const char* str);
#ifdef __cplusplus
#include <string>
#if defined(OSG_ENVVAR_SUPPORTED)
#include <stdlib.h>
#include <sstream>
@ -47,11 +49,16 @@ inline unsigned int getClampedLength(const char* str, unsigned int maxNumChars=4
inline std::string getEnvVar(const char* name)
{
#ifdef OSG_ENVVAR_SUPPORTED
std::string value;
const char* ptr = getenv(name);
if (ptr) value.assign(ptr, getClampedLength(ptr));
return value;
}
#else
OSG_UNUSED(name);
return std::string();
#endif
}
template<typename T>
@ -65,6 +72,7 @@ inline bool getEnvVar(const char* name, T& value)
str >> value;
return !str.fail();
#else
OSG_UNUSED2(name, value);
return false;
#endif
}
@ -79,6 +87,7 @@ inline bool getEnvVar(const char* name, std::string& value)
value.assign(ptr, getClampedLength(ptr));
return true;
#else
OSG_UNUSED2(name, value);
return false;
#endif
}
@ -94,6 +103,7 @@ inline bool getEnvVar(const char* name, T1& value1, T2& value2)
str >> value1 >> value2;
return !str.fail();
#else
OSG_UNUSED3(name, value1, value2);
return false;
#endif
}
@ -109,6 +119,7 @@ inline bool getEnvVar(const char* name, T1& value1, T2& value2, T3& value3)
str >> value1 >> value2 >> value3;
return !str.fail();
#else
OSG_UNUSED4(name, value1, value2, value3);
return false;
#endif
}
@ -124,6 +135,7 @@ inline bool getEnvVar(const char* name, T1& value1, T2& value2, T3& value3, T4&
str >> value1 >> value2 >> value3 >> value4;
return !str.fail();
#else
OSG_UNUSED5(name, value1, value2, value3, value4);
return false;
#endif
}

2
src/osg/os_utils.cpp
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@ -33,6 +33,8 @@ int osg_system(const char* command)
#else // use tranditional C sysmtem call for osg_system implementation
#include <stdlib.h>
int osg_system(const char* command)
{
return system(command);