1 files changed, 86 insertions, 0 deletions
diff --git a/SQLiteStudio3/sqlitestudiocli/commands/clicommandhelp.cpp b/SQLiteStudio3/sqlitestudiocli/commands/clicommandhelp.cpp
new file mode 100644
index 0000000..7a957c3
--- /dev/null
+++ b/SQLiteStudio3/sqlitestudiocli/commands/clicommandhelp.cpp
@@ -0,0 +1,86 @@
+#include "clicommandhelp.h"
+#include "clicommandfactory.h"
+#include "common/utils.h"
+#include "cli_config.h"
+
+void CliCommandHelp::execute()
+{
+    if (syntax.isArgumentSet(CMD_NAME))
+        printHelp(syntax.getArgument(CMD_NAME));
+    else
+        printHelp();
+}
+
+QString CliCommandHelp::shortHelp() const
+{
+    return tr("shows this help message");
+}
+
+QString CliCommandHelp::fullHelp() const
+{
+    return tr(
+                "Use %1 to learn about certain commands supported by the command line interface (CLI) of the SQLiteStudio.\n"
+                "To see list of supported commands, type %2 without any arguments.\n\n"
+                "When passing <command> name, you can skip special prefix character ('%3').\n\n"
+                "You can always execute any command with exactly single '--help' option to see help for that command. "
+                "It's an alternative for typing: %1 <command>."
+                ).arg(cmdName("help")).arg(cmdName("help")).arg(CFG_CLI.Console.CommandPrefixChar.get()).arg(cmdName("help"));
+}
+
+void CliCommandHelp::defineSyntax()
+{
+    syntax.setName("help");
+    syntax.addArgument(CMD_NAME, tr("command", "CLI command syntax"), false);
+}
+
+void CliCommandHelp::printHelp(const QString& cmd)
+{
+    QString cmdStr = cmd.startsWith(".") ? cmd.mid(1) : cmd;
+    CliCommand* command = CliCommandFactory::getCommand(cmdStr);
+    if (!command)
+    {
+        println(tr("No such command: %1").arg(cmd));
+        println(tr("Type '%1' for list of available commands.").arg(cmdName("help")));
+        println("");
+        return;
+    }
+    command->defineSyntax();
+    QStringList aliases = command->aliases();
+    QString prefix = CFG_CLI.Console.CommandPrefixChar.get();
+
+    QString msg;
+    msg += tr("Usage: %1%2").arg(prefix).arg(command->usage(cmdStr));
+    msg += "\n";
+    if (aliases.size() > 0)
+    {
+        if (aliases.contains(cmdStr))
+        {
+            aliases.removeOne(cmdStr);
+            aliases << command->getName();
+        }
+
+        msg += tr("Aliases: %1").arg(prefix + aliases.join(", " + prefix));
+        msg += "\n";
+    }
+    msg += "\n";
+    msg += command->fullHelp();
+    delete command;
+
+    printBox(msg);
+}
+
+void CliCommandHelp::printHelp()
+{
+    QHash<QString, CliCommand*> allCommands = CliCommandFactory::getAllCommands();
+    QStringList names = allCommands.keys();
+    int width = longest(names).size();
+
+    names.sort();
+    QStringList msgList;
+    foreach (const QString& cmd, names)
+    {
+        msgList << (CFG_CLI.Console.CommandPrefixChar.get() + pad(cmd, width, ' ') + " - " + allCommands[cmd]->shortHelp());
+        delete allCommands[cmd];
+    }
+    printBox(msgList.join("\n"));
+}