1 files changed, 241 insertions, 0 deletions
diff --git a/lldb/source/Utility/StringList.cpp b/lldb/source/Utility/StringList.cpp
new file mode 100644
index 000000000000..5e06b6b69fc0
--- /dev/null
+++ b/lldb/source/Utility/StringList.cpp
@@ -0,0 +1,241 @@
+//===-- StringList.cpp ------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "lldb/Utility/StringList.h"
+
+#include "lldb/Utility/Log.h"
+#include "lldb/Utility/Stream.h"
+#include "lldb/Utility/StreamString.h"
+#include "llvm/ADT/ArrayRef.h"
+
+#include <algorithm>
+#include <stdint.h>
+#include <string.h>
+
+using namespace lldb_private;
+
+StringList::StringList() : m_strings() {}
+
+StringList::StringList(const char *str) : m_strings() {
+  if (str)
+    m_strings.push_back(str);
+}
+
+StringList::StringList(const char **strv, int strc) : m_strings() {
+  for (int i = 0; i < strc; ++i) {
+    if (strv[i])
+      m_strings.push_back(strv[i]);
+  }
+}
+
+StringList::~StringList() {}
+
+void StringList::AppendString(const char *str) {
+  if (str)
+    m_strings.push_back(str);
+}
+
+void StringList::AppendString(const std::string &s) { m_strings.push_back(s); }
+
+void StringList::AppendString(std::string &&s) { m_strings.push_back(s); }
+
+void StringList::AppendString(const char *str, size_t str_len) {
+  if (str)
+    m_strings.push_back(std::string(str, str_len));
+}
+
+void StringList::AppendString(llvm::StringRef str) {
+  m_strings.push_back(str.str());
+}
+
+void StringList::AppendList(const char **strv, int strc) {
+  for (int i = 0; i < strc; ++i) {
+    if (strv[i])
+      m_strings.push_back(strv[i]);
+  }
+}
+
+void StringList::AppendList(StringList strings) {
+  m_strings.reserve(m_strings.size() + strings.GetSize());
+  m_strings.insert(m_strings.end(), strings.begin(), strings.end());
+}
+
+size_t StringList::GetSize() const { return m_strings.size(); }
+
+size_t StringList::GetMaxStringLength() const {
+  size_t max_length = 0;
+  for (const auto &s : m_strings) {
+    const size_t len = s.size();
+    if (max_length < len)
+      max_length = len;
+  }
+  return max_length;
+}
+
+const char *StringList::GetStringAtIndex(size_t idx) const {
+  if (idx < m_strings.size())
+    return m_strings[idx].c_str();
+  return nullptr;
+}
+
+void StringList::Join(const char *separator, Stream &strm) {
+  size_t size = GetSize();
+
+  if (size == 0)
+    return;
+
+  for (uint32_t i = 0; i < size; ++i) {
+    if (i > 0)
+      strm.PutCString(separator);
+    strm.PutCString(GetStringAtIndex(i));
+  }
+}
+
+void StringList::Clear() { m_strings.clear(); }
+
+std::string StringList::LongestCommonPrefix() {
+  if (m_strings.empty())
+    return {};
+
+  auto args = llvm::makeArrayRef(m_strings);
+  llvm::StringRef prefix = args.front();
+  for (auto arg : args.drop_front()) {
+    size_t count = 0;
+    for (count = 0; count < std::min(prefix.size(), arg.size()); ++count) {
+      if (prefix[count] != arg[count])
+        break;
+    }
+    prefix = prefix.take_front(count);
+  }
+  return prefix.str();
+}
+
+void StringList::InsertStringAtIndex(size_t idx, const char *str) {
+  if (str) {
+    if (idx < m_strings.size())
+      m_strings.insert(m_strings.begin() + idx, str);
+    else
+      m_strings.push_back(str);
+  }
+}
+
+void StringList::InsertStringAtIndex(size_t idx, const std::string &str) {
+  if (idx < m_strings.size())
+    m_strings.insert(m_strings.begin() + idx, str);
+  else
+    m_strings.push_back(str);
+}
+
+void StringList::InsertStringAtIndex(size_t idx, std::string &&str) {
+  if (idx < m_strings.size())
+    m_strings.insert(m_strings.begin() + idx, str);
+  else
+    m_strings.push_back(str);
+}
+
+void StringList::DeleteStringAtIndex(size_t idx) {
+  if (idx < m_strings.size())
+    m_strings.erase(m_strings.begin() + idx);
+}
+
+size_t StringList::SplitIntoLines(const std::string &lines) {
+  return SplitIntoLines(lines.c_str(), lines.size());
+}
+
+size_t StringList::SplitIntoLines(const char *lines, size_t len) {
+  const size_t orig_size = m_strings.size();
+
+  if (len == 0)
+    return 0;
+
+  const char *k_newline_chars = "\r\n";
+  const char *p = lines;
+  const char *end = lines + len;
+  while (p < end) {
+    size_t count = strcspn(p, k_newline_chars);
+    if (count == 0) {
+      if (p[count] == '\r' || p[count] == '\n')
+        m_strings.push_back(std::string());
+      else
+        break;
+    } else {
+      if (p + count > end)
+        count = end - p;
+      m_strings.push_back(std::string(p, count));
+    }
+    if (p[count] == '\r' && p[count + 1] == '\n')
+      count++; // Skip an extra newline char for the DOS newline
+    count++;   // Skip the newline character
+    p += count;
+  }
+  return m_strings.size() - orig_size;
+}
+
+void StringList::RemoveBlankLines() {
+  if (GetSize() == 0)
+    return;
+
+  size_t idx = 0;
+  while (idx < m_strings.size()) {
+    if (m_strings[idx].empty())
+      DeleteStringAtIndex(idx);
+    else
+      idx++;
+  }
+}
+
+std::string StringList::CopyList(const char *item_preamble,
+                                 const char *items_sep) const {
+  StreamString strm;
+  for (size_t i = 0; i < GetSize(); i++) {
+    if (i && items_sep && items_sep[0])
+      strm << items_sep;
+    if (item_preamble)
+      strm << item_preamble;
+    strm << GetStringAtIndex(i);
+  }
+  return strm.GetString();
+}
+
+StringList &StringList::operator<<(const char *str) {
+  AppendString(str);
+  return *this;
+}
+
+StringList &StringList::operator<<(const std::string &str) {
+  AppendString(str);
+  return *this;
+}
+
+StringList &StringList::operator<<(StringList strings) {
+  AppendList(strings);
+  return *this;
+}
+
+StringList &StringList::operator=(const std::vector<std::string> &rhs) {
+  m_strings.assign(rhs.begin(), rhs.end());
+
+  return *this;
+}
+
+void StringList::LogDump(Log *log, const char *name) {
+  if (!log)
+    return;
+
+  StreamString strm;
+  if (name)
+    strm.Printf("Begin %s:\n", name);
+  for (const auto &s : m_strings) {
+    strm.Indent();
+    strm.Printf("%s\n", s.c_str());
+  }
+  if (name)
+    strm.Printf("End %s.\n", name);
+
+  LLDB_LOGV(log, "{0}", strm.GetData());
+}