Long live Qt 4.5!

2 files changed, 69 insertions, 0 deletions

diff --git a/config.tests/mac/crc/crc.pro b/config.tests/mac/crc/crc.pro
new file mode 100644
index 0000000000..c3abf15759
--- /dev/null
+++ b/config.tests/mac/crc/crc.pro
@@ -0,0 +1,2 @@
+SOURCES = main.cpp
+CONFIG -= app_bundle qt
diff --git a/config.tests/mac/crc/main.cpp b/config.tests/mac/crc/main.cpp
new file mode 100644
index 0000000000..2ac10b38d5
--- /dev/null
+++ b/config.tests/mac/crc/main.cpp
@@ -0,0 +1,67 @@
+#include <iostream>
+#include <cstdlib>
+#include <cstring>
+
+
+class CCRC32
+{
+public:
+    CCRC32() { initialize(); }
+
+    unsigned long FullCRC(const unsigned char *sData, unsigned long ulDataLength)
+    {
+        unsigned long ulCRC = 0xffffffff;
+        PartialCRC(&ulCRC, sData, ulDataLength);
+        return(ulCRC ^ 0xffffffff);
+    }
+
+    void PartialCRC(unsigned long *ulCRC, const unsigned char *sData, unsigned long ulDataLength)
+    {
+        while(ulDataLength--) {
+            *ulCRC = (*ulCRC >> 8) ^ ulTable[(*ulCRC & 0xFF) ^ *sData++];
+        }
+    }
+
+private:
+    void initialize(void)
+    {
+        unsigned long ulPolynomial = 0x04C11DB7;
+        memset(&ulTable, 0, sizeof(ulTable));
+        for(int iCodes = 0; iCodes <= 0xFF; iCodes++) {
+            ulTable[iCodes] = Reflect(iCodes, 8) << 24;
+            for(int iPos = 0; iPos < 8; iPos++) {
+                ulTable[iCodes] = (ulTable[iCodes] << 1)
+                    ^ ((ulTable[iCodes] & (1 << 31)) ? ulPolynomial : 0);
+            }
+
+            ulTable[iCodes] = Reflect(ulTable[iCodes], 32);
+        }
+    }
+    unsigned long Reflect(unsigned long ulReflect, const char cChar)
+    {
+        unsigned long ulValue = 0;
+        // Swap bit 0 for bit 7, bit 1 For bit 6, etc....
+        for(int iPos = 1; iPos < (cChar + 1); iPos++) {
+            if(ulReflect & 1) {
+                ulValue |= (1 << (cChar - iPos));
+            }
+            ulReflect >>= 1;
+        }
+        return ulValue;
+    }
+    unsigned long ulTable[256]; // CRC lookup table array.
+};
+
+
+int main(int argc, char **argv)
+{
+    CCRC32 crc;
+    char *name;
+    if (argc < 2) {
+        std::cerr << "usage: crc <string>\n";
+        return 0;
+    } else {
+        name = argv[1];
+    }
+    std::cout << crc.FullCRC((unsigned char *)name, strlen(name)) << std::endl;
+}