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210 lines (185 loc) · 6.61 KB
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/*
+----------------------------------------------------------------------+
| HipHop for PHP |
+----------------------------------------------------------------------+
| Copyright (c) 2010-2013 Facebook, Inc. (http://www.facebook.com) |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
*/
#include "hphp/runtime/debugger/cmd/cmd_extended.h"
#include "hphp/runtime/debugger/cmd/all.h"
#include "hphp/util/logger.h"
namespace HPHP { namespace Eval {
///////////////////////////////////////////////////////////////////////////////
TRACE_SET_MOD(debugger);
void CmdExtended::list(DebuggerClient &client) {
if (client.argCount() == 0) {
const ExtendedCommandMap &cmds = getCommandMap();
for (ExtendedCommandMap::const_iterator iter = cmds.begin();
iter != cmds.end(); ++iter) {
client.addCompletion(iter->first.c_str());
}
} else {
ExtendedCommandMap matches = match(client, 1);
if (matches.size() == 1) {
invokeList(client, matches.begin()->second);
}
}
}
static string format_unique_prefix(const std::string &cmd,
const std::string &prev,
const std::string &next) {
for (unsigned int i = 1; i < cmd.size(); i++) {
if (strncasecmp(cmd.c_str(), prev.c_str(), i) &&
strncasecmp(cmd.c_str(), next.c_str(), i)) {
return "[" + cmd.substr(0, i) + "]" + cmd.substr(i);
}
}
return cmd + " (ambiguous command)";
}
void CmdExtended::helpImpl(DebuggerClient &client, const char *name) {
const char *cmd = "{cmd} {arg1} {arg2} ...";
const char *help = "invoke specified command";
client.helpCmds((string(name) + " " + cmd).c_str(), help,
(string(name) + cmd).c_str(), help,
nullptr);
const ExtendedCommandMap &cmds = getCommandMap();
if (!cmds.empty()) {
client.help("%s", "");
client.help("where {cmd} can be:");
client.help("%s", "");
vector<string> vcmds;
for (ExtendedCommandMap::const_iterator iter = cmds.begin();
iter != cmds.end(); ++iter) {
vcmds.push_back(iter->first);
}
for (unsigned int i = 0; i < vcmds.size(); i++) {
client.help("\t%s", format_unique_prefix
(vcmds[i], i ? vcmds[i-1] : "",
i < vcmds.size() - 1 ? vcmds[i+1] : "").c_str());
}
client.help("%s", "");
client.help("Type '%s [h]elp|? {cmd} to read their usages.", name);
}
}
ExtendedCommandMap CmdExtended::match(DebuggerClient &client, int argIndex) {
ExtendedCommandMap matches;
const ExtendedCommandMap &cmds = getCommandMap();
for (ExtendedCommandMap::const_iterator iter = cmds.begin();
iter != cmds.end(); ++iter) {
if (client.arg(argIndex, iter->first.c_str())) {
matches[iter->first] = iter->second;
}
}
if (matches.empty()) {
client.error("Cannot find the specified user command: %s",
client.argValue(argIndex).c_str());
}
return matches;
}
void CmdExtended::helpCommands(DebuggerClient &client,
const ExtendedCommandMap &matches) {
for (ExtendedCommandMap::const_iterator iter = matches.begin();
iter != matches.end(); ++iter) {
invokeHelp(client, iter->second);
}
}
void CmdExtended::onClient(DebuggerClient &client) {
if (client.arg(1, "help") || client.arg(1, "?")) {
if (client.argCount() == 1) {
help(client);
return;
}
ExtendedCommandMap matches = match(client, 2);
if (matches.empty()) {
help(client);
} else {
helpCommands(client, matches);
}
return;
}
ExtendedCommandMap matches = match(client, 1);
if (matches.empty()) {
help(client);
} else if (matches.size() > 1) {
client.error("Need more letters to tell which one of these:");
for (ExtendedCommandMap::const_iterator iter = matches.begin();
iter != matches.end(); ++iter) {
client.error("\t%s", iter->first.c_str());
}
} else if (!invokeClient(client, matches.begin()->second)) {
if (client.arg(2, "help") || client.arg(2, "?")) {
helpCommands(client, matches);
}
}
}
///////////////////////////////////////////////////////////////////////////////
void CmdExtended::help(DebuggerClient &client) {
client.helpTitle("Extended Command");
helpImpl(client, "x");
}
const ExtendedCommandMap &CmdExtended::getCommandMap() {
return GetExtendedCommandMap();
}
void CmdExtended::invokeList(DebuggerClient &client, const std::string &cls){
DebuggerCommandPtr cmd = CreateExtendedCommand(cls);
if (cmd) {
cmd->list(client);
}
}
bool CmdExtended::invokeHelp(DebuggerClient &client, const std::string &cls) {
DebuggerCommandPtr cmd = CreateExtendedCommand(cls);
if (cmd) {
cmd->help(client);
return true;
}
return false;
}
bool CmdExtended::invokeClient(DebuggerClient &client, const std::string &cls){
client.usageLogCommand("extended", cls);
DebuggerCommandPtr cmd = CreateExtendedCommand(cls);
if (cmd) {
cmd->onClient(client);
return true;
}
return false;
}
bool CmdExtended::onServer(DebuggerProxy &proxy) {
assert(false);
return false;
}
///////////////////////////////////////////////////////////////////////////////
const ExtendedCommandMap &CmdExtended::GetExtendedCommandMap() {
static ExtendedCommandMap s_command_map = {
{ "ample" , "CmdExample" },
{ "tension" , "CmdExtension" },
{ "heaptrace", "CmdHeaptrace" }
};
return s_command_map;
}
#define ELSE_IF_CMD(name) \
} else if (cls == "Cmd" #name) { ret = CmdExtendedPtr(new Cmd ## name());
DebuggerCommandPtr CmdExtended::CreateExtendedCommand(const std::string &cls) {
CmdExtendedPtr ret;
if (cls.empty()) {
// add one line for each command
ELSE_IF_CMD(Example);
ELSE_IF_CMD(Extension);
ELSE_IF_CMD(Heaptrace);
}
if (ret) {
ret->m_class = cls;
} else {
Logger::Error("Unable to create %s extended command", cls.c_str());
}
return ret;
}
///////////////////////////////////////////////////////////////////////////////
}}