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pull some win32 code into common code, add bitcode identification support.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36846 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2007-05-06 05:32:21 +00:00
parent 609083b9e0
commit f283a5e53a
3 changed files with 29 additions and 46 deletions
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29
lib/System/Path.cpp
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@ -43,6 +43,10 @@ sys::IdentifyFileType(const char*magic, unsigned length) {
assert(magic && "Invalid magic number string");
assert(length >=4 && "Invalid magic number length");
switch (magic[0]) {
case 'B':
if (magic[1] == 'C' && magic[2] == (char)0xC0 && magic[3] == (char)0xDE)
return Bitcode_FileType;
break;
case 'l':
if (magic[1] == 'l' && magic[2] == 'v') {
if (magic[3] == 'c')
@ -160,6 +164,31 @@ std::string Path::GetDLLSuffix() {
return LTDL_SHLIB_EXT;
}
bool
Path::isBytecodeFile() const {
std::string actualMagic;
if (!getMagicNumber(actualMagic, 4))
return false;
return actualMagic == "llvc" || actualMagic == "llvm";
}
bool
Path::isBitcodeFile() const {
std::string actualMagic;
if (!getMagicNumber(actualMagic, 4))
return false;
return actualMagic == "BC\xC0\xDE";
}
bool Path::hasMagicNumber(const std::string &Magic) const {
std::string actualMagic;
if (getMagicNumber(actualMagic, Magic.size()))
return Magic == actualMagic;
return false;
}
// Include the truly platform-specific parts of this class.
#if defined(LLVM_ON_UNIX)
#include "Unix/Path.inc"