v1.03 prerelease - Full Linux port of crnlib/crunch, in progress - still more testing to do, and some cmd line options (such as -timestamp) don't work under linux yet, but the core stuff (compression/decompression/transcoding) should work fine and performance under Linux is comparable to Windows. The 3 examples haven't been ported yet.

crnlib/crn_platform.cpp

@@ -1,6 +1,73 @@
 // File: crn_platform.cpp
 // See Copyright Notice and license at the end of inc/crnlib.h
 #include "crn_core.h"
+
+#if CRNLIB_USE_WIN32_API
+#include "crn_winhdr.h"
+#endif
+#ifndef _MSC_VER
+int sprintf_s(char *buffer, size_t sizeOfBuffer, const char *format, ...)
+{
+   if (!sizeOfBuffer)
+      return 0;
+
+   va_list args;
+   va_start(args, format);
+   int c = vsnprintf(buffer, sizeOfBuffer, format, args);
+   va_end(args);
+
+   buffer[sizeOfBuffer - 1] = '\0';
+
+   if (c < 0)
+      return sizeOfBuffer - 1;
+
+   return CRNLIB_MIN(c, (int)sizeOfBuffer - 1);
+}
+
+int vsprintf_s(char *buffer, size_t sizeOfBuffer, const char *format, va_list args)
+{
+   if (!sizeOfBuffer)
+      return 0;
+
+   int c = vsnprintf(buffer, sizeOfBuffer, format, args);
+
+   buffer[sizeOfBuffer - 1] = '\0';
+
+   if (c < 0)
+      return sizeOfBuffer - 1;
+
+   return CRNLIB_MIN(c, (int)sizeOfBuffer - 1);
+}
+
+char* strlwr(char* p)
+{
+   char *q = p;
+   while (*q)
+   {
+      char c = *q;
+      *q++ = tolower(c);
+   }
+   return p;
+}
+
+char* strupr(char *p)
+{
+   char *q = p;
+   while (*q)
+   {
+      char c = *q;
+      *q++ = toupper(c);
+   }
+   return p;
+}
+#endif // __GNUC__
+
+void crnlib_debug_break(void)
+{
+   CRNLIB_BREAKPOINT
+}
+
+#if CRNLIB_USE_WIN32_API
 #include "crn_winhdr.h"
 
 bool crnlib_is_debugger_present(void)
@@ -8,12 +75,18 @@ bool crnlib_is_debugger_present(void)
    return IsDebuggerPresent() != 0;
 }
 
-void crnlib_debug_break(void)
-{
-   DebugBreak();
-}
-
 void crnlib_output_debug_string(const char* p)
 {
    OutputDebugStringA(p);
 }
+#else
+bool crnlib_is_debugger_present(void)
+{
+   return false;
+}
+
+void crnlib_output_debug_string(const char* p)
+{
+   puts(p);
+}
+#endif // CRNLIB_USE_WIN32_API