// Insert a file into the archive before some other member. This also takes care
// of extracting the necessary flags and information from the file.
bool
Archive::addFileBefore(const sys::Path& filePath, iterator where,
std::string* ErrMsg) {
if (!filePath.exists()) {
if (ErrMsg)
*ErrMsg = "Can not add a non-existent file to archive";
return true;
}
ArchiveMember* mbr = new ArchiveMember(this);
mbr->data = 0;
mbr->path = filePath;
const sys::FileStatus *FSInfo = mbr->path.getFileStatus(false, ErrMsg);
if (!FSInfo) {
delete mbr;
return true;
}
mbr->info = *FSInfo;
unsigned flags = 0;
bool hasSlash = filePath.str().find('/') != std::string::npos;
if (hasSlash)
flags |= ArchiveMember::HasPathFlag;
if (hasSlash || filePath.str().length() > 15)
flags |= ArchiveMember::HasLongFilenameFlag;
std::string magic;
mbr->path.getMagicNumber(magic,4);
switch (sys::IdentifyFileType(magic.c_str(),4)) {
case sys::Bitcode_FileType:
flags |= ArchiveMember::BitcodeFlag;
break;
default:
break;
}
mbr->flags = flags;
members.insert(where,mbr);
return false;
}
// This method allows an ArchiveMember to be replaced with the data for a
// different file, presumably as an update to the member. It also makes sure
// the flags are reset correctly.
bool ArchiveMember::replaceWith(const sys::Path& newFile, std::string* ErrMsg) {
if (!newFile.exists()) {
if (ErrMsg)
*ErrMsg = "Can not replace an archive member with a non-existent file";
return true;
}
data = 0;
path = newFile;
// SVR4 symbol tables have an empty name
if (path.str() == ARFILE_SVR4_SYMTAB_NAME)
flags |= SVR4SymbolTableFlag;
else
flags &= ~SVR4SymbolTableFlag;
// BSD4.4 symbol tables have a special name
if (path.str() == ARFILE_BSD4_SYMTAB_NAME)
flags |= BSD4SymbolTableFlag;
else
flags &= ~BSD4SymbolTableFlag;
// LLVM symbol tables have a very specific name
if (path.str() == ARFILE_LLVM_SYMTAB_NAME)
flags |= LLVMSymbolTableFlag;
else
flags &= ~LLVMSymbolTableFlag;
// String table name
if (path.str() == ARFILE_STRTAB_NAME)
flags |= StringTableFlag;
else
flags &= ~StringTableFlag;
// If it has a slash then it has a path
bool hasSlash = path.str().find('/') != std::string::npos;
if (hasSlash)
flags |= HasPathFlag;
else
flags &= ~HasPathFlag;
// If it has a slash or its over 15 chars then its a long filename format
if (hasSlash || path.str().length() > 15)
flags |= HasLongFilenameFlag;
else
flags &= ~HasLongFilenameFlag;
// Get the signature and status info
const char* signature = (const char*) data;
std::string magic;
if (!signature) {
path.getMagicNumber(magic,4);
signature = magic.c_str();
std::string err;
const sys::FileStatus *FSinfo = path.getFileStatus(false, ErrMsg);
if (FSinfo)
info = *FSinfo;
else
return true;
}
// Determine what kind of file it is.
switch (sys::IdentifyFileType(signature,4)) {
case sys::Bitcode_FileType:
flags |= BitcodeFlag;
break;
default:
flags &= ~BitcodeFlag;
break;
}
return false;
}