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For PR351: \

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* Get file information from a MappedFile instance \
* Convert file type tests to sys::Path form


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18854 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer 2004-12-13 02:59:15 +00:00
parent 5af46883f2
commit 663601cca6
2 changed files with 17 additions and 49 deletions
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11
lib/Debugger/ProgramInfo.cpp
View File

@ -170,11 +170,16 @@ SourceFileInfo::~SourceFileInfo() {
SourceFile &SourceFileInfo::getSourceText() const {
// FIXME: this should take into account the source search directories!
if (SourceText == 0) // Read the file in if we haven't already.
if (!Directory.empty() && FileOpenable(Directory+"/"+BaseName))
SourceText = new SourceFile(Directory+"/"+BaseName, Descriptor);
if (SourceText == 0) { // Read the file in if we haven't already.
sys::Path tmpPath;
if (!Directory.empty())
tmpPath.setDirectory(Directory);
tmpPath.appendFile(BaseName);
if (tmpPath.readable())
SourceText = new SourceFile(tmpPath.toString(), Descriptor);
else
SourceText = new SourceFile(BaseName, Descriptor);
}
return *SourceText;
}

55
lib/Debugger/SourceFile.cpp
View File

@ -20,56 +20,19 @@
#include <unistd.h>
using namespace llvm;
/// readFile - Load Filename into FileStart and FileEnd.
/// readFile - Load Filename
///
void SourceFile::readFile() {
ssize_t FileSize = getFileSize(Filename);
if (FileSize != -1) {
FDHandle FD(open(Filename.c_str(), O_RDONLY));
if (FD != -1) {
char *FilePos = new char[FileSize];
FileStart = FilePos;
// If this takes a long time, inform the user what we are doing.
SlowOperationInformer SOI("loading source file '" + Filename + "'");
try {
// Read in the whole buffer.
unsigned Amount = FileSize;
while (Amount) {
unsigned AmountToRead = 512*1024;
if (Amount < AmountToRead) AmountToRead = Amount;
ssize_t ReadAmount = read(FD, FilePos, AmountToRead);
if (ReadAmount < 0 && errno == EINTR)
continue;
else if (ReadAmount <= 0) {
// Couldn't read whole file just free memory and continue.
throw "Error reading file '" + Filename + "'!";
}
Amount -= ReadAmount;
FilePos += ReadAmount;
SOI.progress(FileSize-Amount, FileSize);
}
} catch (const std::string &Msg) {
std::cout << Msg << "\n";
// If the user cancels the operation, clean up after ourselves.
delete [] FileStart;
FileStart = 0;
return;
}
FileEnd = FileStart+FileSize;
}
}
File.map();
}
/// calculateLineOffsets - Compute the LineOffset vector for the current file.
///
void SourceFile::calculateLineOffsets() const {
assert(LineOffset.empty() && "Line offsets already computed!");
const char *BufPtr = FileStart;
const char *BufPtr = File.charBase();
const char *FileStart = BufPtr;
const char *FileEnd = FileStart + File.size();
do {
LineOffset.push_back(BufPtr-FileStart);
@ -93,19 +56,19 @@ void SourceFile::calculateLineOffsets() const {
void SourceFile::getSourceLine(unsigned LineNo, const char *&LineStart,
const char *&LineEnd) const {
LineStart = LineEnd = 0;
if (FileStart == 0) return; // Couldn't load file, return null pointers
if (!File.isMapped()) return; // Couldn't load file, return null pointers
if (LineOffset.empty()) calculateLineOffsets();
// Asking for an out-of-range line number?
if (LineNo >= LineOffset.size()) return;
// Otherwise, they are asking for a valid line, which we can fulfill.
LineStart = FileStart+LineOffset[LineNo];
LineStart = File.charBase()+LineOffset[LineNo];
if (LineNo+1 < LineOffset.size())
LineEnd = FileStart+LineOffset[LineNo+1];
LineEnd = File.charBase()+LineOffset[LineNo+1];
else
LineEnd = FileEnd;
LineEnd = File.charBase() + File.size();
// If the line ended with a newline, strip it off.
while (LineEnd != LineStart && (LineEnd[-1] == '\n' || LineEnd[-1] == '\r'))