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#include "clicompleter.h"
#include "completionhelper.h"
#include "cli.h"
#include "cli_config.h"
#include "common/unused.h"
#include "commands/clicommand.h"
#include "parser/lexer.h"
#include "commands/clicommandfactory.h"
#include <QString>
#include <QDebug>
#if defined(Q_OS_WIN32)
#include "readline.h"
#elif defined(Q_OS_UNIX)
#include <readline/readline.h>
#endif
CliCompleter* CliCompleter::instance = nullptr;
CliCompleter::CliCompleter()
{
}
void CliCompleter::init(CLI* value)
{
rl_attempted_completion_function = CliCompleter::complete;
cli = value;
}
CliCompleter* CliCompleter::getInstance()
{
if (!instance)
instance = new CliCompleter();
return instance;
}
char** CliCompleter::complete(const char* text, int start, int end)
{
UNUSED(start);
#ifdef Q_OS_UNIX
// Unix readline needs this to disable the completion using rl_completion_entry_function
rl_attempted_completion_over = 1;
#endif
return toCharArray(getInstance()->completeInternal(QString::fromLocal8Bit(text), QString::fromLocal8Bit(rl_line_buffer), end));
}
QStringList CliCompleter::completeInternal(const QString& toBeReplaced, const QString& text, int curPos)
{
QString str;
if (!cli->getLine().isEmpty())
{
str += cli->getLine();
curPos += str.length();
}
str += text;
QStringList list;
if (str.startsWith(CFG_CLI.Console.CommandPrefixChar.get()))
list = completeCommand(str, curPos);
else
list = completeQuery(toBeReplaced, str, curPos);
list.removeDuplicates();
#ifdef Q_OS_WIN
if (list.size() == 1)
list[0] += " ";
#endif
#ifdef Q_OS_UNIX
// Unix readline treats first element in the list as a common value of all elements
if (list.size() > 0)
list.prepend(longestCommonPart(list));
#endif
return list;
}
QStringList CliCompleter::completeCommand(const QString& str, int curPos)
{
QStringList results;
QString text = str.mid(0, curPos);
QStringList cmdWords = tokenizeArgs(text);
if (cmdWords.size() == 0)
return results;
if (text[text.length()-1].isSpace())
cmdWords << "";
QString cmdStr = cmdWords[0].mid(1);
if (cmdWords.size() > 1)
{
CliCommand* command = CliCommandFactory::getCommand(cmdStr);
if (!command)
return results;
command->setup(cli);
results = command->complete(cmdWords.mid(1)).filter(QRegExp("^"+cmdWords.last()+".*"));
}
else
{
QStringList cmdNames = CliCommandFactory::getCommandNames().filter(QRegExp("^"+cmdStr+".*"));
cmdNames.sort(Qt::CaseInsensitive);
for (const QString& cmdName : cmdNames)
results << CFG_CLI.Console.CommandPrefixChar.get() + cmdName;
}
return results;
}
QStringList CliCompleter::completeQuery(const QString& toBeReplaced, const QString& str, int curPos)
{
QStringList list;
if (!cli->getCurrentDb())
return list;
bool keepOriginalStr = doKeepOriginalStr(str, curPos);
CompletionHelper completer(str, curPos, cli->getCurrentDb());
QList<ExpectedTokenPtr> expectedTokens = completer.getExpectedTokens().filtered();
for (const ExpectedTokenPtr& token : expectedTokens)
list << token->value;
list.removeAll("");
if (list.size() > 1)
list.removeOne(";"); // we don't want it together with other proposals, cause it introduces problems when proposed by completer
if (keepOriginalStr)
{
QMutableStringListIterator it(list);
while (it.hasNext())
it.next().prepend(toBeReplaced);
}
return list;
}
bool CliCompleter::doKeepOriginalStr(const QString& str, int curPos)
{
TokenList tokens = Lexer::tokenize(str.mid(0, curPos));
if (tokens.size() == 0)
return false;
return tokens.last()->isSeparating();
}
char** CliCompleter::toCharArray(const QStringList& list)
{
if (list.size() == 0)
return nullptr;
char** array = (char**)malloc((list.size() + 1) * sizeof(char*));
array[list.size()] = nullptr;
int i = 0;
for (const QString& str : list)
#if defined(Q_OS_WIN)
array[i++] = _strdup(str.toLocal8Bit().data());
#elif defined(Q_OS_UNIX)
array[i++] = strdup(str.toLocal8Bit().data());
#endif
return array;
}
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