1 files changed, 192 insertions, 0 deletions
diff --git a/indra/newview/llexternaleditor.cpp b/indra/newview/llexternaleditor.cpp
new file mode 100644
index 0000000000..54968841ab
--- /dev/null
+++ b/indra/newview/llexternaleditor.cpp
@@ -0,0 +1,192 @@
+/** 
+ * @file llexternaleditor.cpp
+ * @brief A convenient class to run external editor.
+ *
+ * $LicenseInfo:firstyear=2010&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#include "llviewerprecompiledheaders.h"
+#include "llexternaleditor.h"
+
+#include "llui.h"
+
+// static
+const std::string LLExternalEditor::sFilenameMarker = "%s";
+
+// static
+const std::string LLExternalEditor::sSetting = "ExternalEditor";
+
+bool LLExternalEditor::setCommand(const std::string& env_var, const std::string& override)
+{
+	std::string cmd = findCommand(env_var, override);
+	if (cmd.empty())
+	{
+		llwarns << "Empty editor command" << llendl;
+		return false;
+	}
+
+	// Add the filename marker if missing.
+	if (cmd.find(sFilenameMarker) == std::string::npos)
+	{
+		cmd += " \"" + sFilenameMarker + "\"";
+		llinfos << "Adding the filename marker (" << sFilenameMarker << ")" << llendl;
+	}
+
+	string_vec_t tokens;
+	if (tokenize(tokens, cmd) < 2) // 2 = bin + at least one arg (%s)
+	{
+		llwarns << "Error parsing editor command" << llendl;
+		return false;
+	}
+
+	// Check executable for existence.
+	std::string bin_path = tokens[0];
+	if (!LLFile::isfile(bin_path))
+	{
+		llwarns << "Editor binary [" << bin_path << "] not found" << llendl;
+		return false;
+	}
+
+	// Save command.
+	mProcess.setExecutable(bin_path);
+	mArgs.clear();
+	for (size_t i = 1; i < tokens.size(); ++i)
+	{
+		if (i > 1) mArgs += " ";
+		mArgs += "\"" + tokens[i] + "\"";
+	}
+	llinfos << "Setting command [" << bin_path << " " << mArgs << "]" << llendl;
+
+	return true;
+}
+
+bool LLExternalEditor::run(const std::string& file_path)
+{
+	std::string args = mArgs;
+	if (mProcess.getExecutable().empty() || args.empty())
+	{
+		llwarns << "Editor command not set" << llendl;
+		return false;
+	}
+
+	// Substitute the filename marker in the command with the actual passed file name.
+	LLStringUtil::replaceString(args, sFilenameMarker, file_path);
+
+	// Split command into separate tokens.
+	string_vec_t tokens;
+	tokenize(tokens, args);
+
+	// Set process arguments taken from the command.
+	mProcess.clearArguments();
+	for (string_vec_t::const_iterator arg_it = tokens.begin(); arg_it != tokens.end(); ++arg_it)
+	{
+		mProcess.addArgument(*arg_it);
+	}
+
+	// Run the editor.
+	llinfos << "Running editor command [" << mProcess.getExecutable() + " " + args << "]" << llendl;
+	int result = mProcess.launch();
+	if (result == 0)
+	{
+		// Prevent killing the process in destructor (will add it to the zombies list).
+		mProcess.orphan();
+	}
+
+	return result == 0;
+}
+
+// static
+size_t LLExternalEditor::tokenize(string_vec_t& tokens, const std::string& str)
+{
+	tokens.clear();
+
+	// Split the argument string into separate strings for each argument
+	typedef boost::tokenizer< boost::char_separator<char> > tokenizer;
+	boost::char_separator<char> sep("", "\" ", boost::drop_empty_tokens);
+
+	tokenizer tokens_list(str, sep);
+	tokenizer::iterator token_iter;
+	BOOL inside_quotes = FALSE;
+	BOOL last_was_space = FALSE;
+	for (token_iter = tokens_list.begin(); token_iter != tokens_list.end(); ++token_iter)
+	{
+		if (!strncmp("\"",(*token_iter).c_str(),2))
+		{
+			inside_quotes = !inside_quotes;
+		}
+		else if (!strncmp(" ",(*token_iter).c_str(),2))
+		{
+			if(inside_quotes)
+			{
+				tokens.back().append(std::string(" "));
+				last_was_space = TRUE;
+			}
+		}
+		else
+		{
+			std::string to_push = *token_iter;
+			if (last_was_space)
+			{
+				tokens.back().append(to_push);
+				last_was_space = FALSE;
+			}
+			else
+			{
+				tokens.push_back(to_push);
+			}
+		}
+	}
+
+	return tokens.size();
+}
+
+// static
+std::string LLExternalEditor::findCommand(
+	const std::string& env_var,
+	const std::string& override)
+{
+	std::string cmd;
+
+	// Get executable path.
+	if (!override.empty())	// try the supplied override first
+	{
+		cmd = override;
+		llinfos << "Using override" << llendl;
+	}
+	else if (!LLUI::sSettingGroups["config"]->getString(sSetting).empty())
+	{
+		cmd = LLUI::sSettingGroups["config"]->getString(sSetting);
+		llinfos << "Using setting" << llendl;
+	}
+	else					// otherwise use the path specified by the environment variable
+	{
+		char* env_var_val = getenv(env_var.c_str());
+		if (env_var_val)
+		{
+			cmd = env_var_val;
+			llinfos << "Using env var " << env_var << llendl;
+		}
+	}
+
+	llinfos << "Found command [" << cmd << "]" << llendl;
+	return cmd;
+}