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Pass a StringRef to sys::identifyFileType.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183669 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2013-06-10 15:27:39 +00:00
parent b972457783
commit f12745f7a7
9 changed files with 15 additions and 18 deletions
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12
lib/Support/Path.cpp
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@ -38,9 +38,9 @@ bool Path::operator<(const Path& that) const {
}
LLVMFileType
sys::identifyFileType(const char *Magic, unsigned Length) {
assert(Magic && "Invalid magic number string");
assert(Length >=4 && "Invalid magic number length");
sys::identifyFileType(StringRef Magic) {
unsigned Length = Magic.size();
assert(Length >= 4 && "Invalid magic number length");
switch ((unsigned char)Magic[0]) {
case 0xDE: // 0x0B17C0DE = BC wraper
if (Magic[1] == (char)0xC0 && Magic[2] == (char)0x17 &&
@ -53,7 +53,7 @@ sys::identifyFileType(const char *Magic, unsigned Length) {
break;
case '!':
if (Length >= 8)
if (memcmp(Magic,"!<arch>\n",8) == 0)
if (memcmp(Magic.data(),"!<arch>\n",8) == 0)
return Archive_FileType;
break;
@ -136,9 +136,9 @@ sys::identifyFileType(const char *Magic, unsigned Length) {
case 0x4d: // Possible MS-DOS stub on Windows PE file
if (Magic[1] == 0x5a) {
uint32_t off =
*reinterpret_cast<const ulittle32_t *>(Magic + 0x3c);
*reinterpret_cast<const ulittle32_t *>(Magic.data() + 0x3c);
// PE/COFF file, either EXE or DLL.
if (off < Length && memcmp(Magic + off, "PE\0\0",4) == 0)
if (off < Length && memcmp(Magic.data() + off, "PE\0\0",4) == 0)
return COFF_FileType;
}
break;