Change file op |ssize_t|s to FileOperationResult

util/net/http_body.cc

 // Copyright 2014 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
@@ skipping 14 matching lines @@
 
 namespace crashpad {
 
 StringHTTPBodyStream::StringHTTPBodyStream(const std::string& string)
     : HTTPBodyStream(), string_(string), bytes_read_() {
 }
 
 StringHTTPBodyStream::~StringHTTPBodyStream() {
 }
 
-ssize_t StringHTTPBodyStream::GetBytesBuffer(uint8_t* buffer, size_t max_len) {
+FileOperationResult StringHTTPBodyStream::GetBytesBuffer(uint8_t* buffer,
+                                                         size_t max_len) {
   size_t num_bytes_remaining = string_.length() - bytes_read_;
   if (num_bytes_remaining == 0) {
     return num_bytes_remaining;
   }
 
-  size_t num_bytes_returned =
-      std::min(std::min(num_bytes_remaining, max_len),
-               implicit_cast<size_t>(std::numeric_limits<ssize_t>::max()));
+  size_t num_bytes_returned = std::min(
+      std::min(num_bytes_remaining, max_len),
+      implicit_cast<size_t>(std::numeric_limits<FileOperationResult>::max()));
   memcpy(buffer, &string_[bytes_read_], num_bytes_returned);
   bytes_read_ += num_bytes_returned;
   return num_bytes_returned;
 }
 
 FileHTTPBodyStream::FileHTTPBodyStream(const base::FilePath& path)
     : HTTPBodyStream(), path_(path), file_(), file_state_(kUnopenedFile) {
 }
 
 FileHTTPBodyStream::~FileHTTPBodyStream() {
 }
 
-ssize_t FileHTTPBodyStream::GetBytesBuffer(uint8_t* buffer, size_t max_len) {
+FileOperationResult FileHTTPBodyStream::GetBytesBuffer(uint8_t* buffer,
+                                                       size_t max_len) {
   switch (file_state_) {
     case kUnopenedFile:
       file_.reset(LoggingOpenFileForRead(path_));
       if (!file_.is_valid()) {
         file_state_ = kFileOpenError;
         return -1;
       }
       file_state_ = kReading;
       break;
     case kFileOpenError:
       return -1;
     case kClosedAtEOF:
       return 0;
     case kReading:
       break;
   }
 
-  ssize_t rv = ReadFile(file_.get(), buffer, max_len);
+  FileOperationResult rv = ReadFile(file_.get(), buffer, max_len);
   if (rv == 0) {
     file_.reset();
     file_state_ = kClosedAtEOF;
   } else if (rv < 0) {
     PLOG(ERROR) << "read";
   }
   return rv;
 }
 
 CompositeHTTPBodyStream::CompositeHTTPBodyStream(
     const CompositeHTTPBodyStream::PartsList& parts)
     : HTTPBodyStream(), parts_(parts), current_part_(parts_.begin()) {
 }
 
 CompositeHTTPBodyStream::~CompositeHTTPBodyStream() {
   STLDeleteContainerPointers(parts_.begin(), parts_.end());
 }
 
-ssize_t CompositeHTTPBodyStream::GetBytesBuffer(uint8_t* buffer,
-                                                size_t buffer_len) {
-  ssize_t max_len = std::min(
-      buffer_len, implicit_cast<size_t>(std::numeric_limits<ssize_t>::max()));
-  ssize_t bytes_copied = 0;
+FileOperationResult CompositeHTTPBodyStream::GetBytesBuffer(uint8_t* buffer,
+                                                            size_t buffer_len) {
+  FileOperationResult max_len = std::min(
+      buffer_len,
+      implicit_cast<size_t>(std::numeric_limits<FileOperationResult>::max()));
+  FileOperationResult bytes_copied = 0;
   while (bytes_copied < max_len && current_part_ != parts_.end()) {
-    ssize_t this_read = (*current_part_)->GetBytesBuffer(
-        buffer + bytes_copied, max_len - bytes_copied);
+    FileOperationResult this_read =
+        (*current_part_)
+            ->GetBytesBuffer(buffer + bytes_copied, max_len - bytes_copied);
 
     if (this_read == 0) {
       // If the current part has returned 0 indicating EOF, advance the current
       // part and try again.
       ++current_part_;
     } else if (this_read < 0) {
       return this_read;
     }
     bytes_copied += this_read;
   }
 
   return bytes_copied;
 }
 
 }  // namespace crashpad