refactor: use wine's parsing function for better parity

run-applet/run-applet.pro

@@ -10,10 +10,13 @@ CONFIG += c++17
 
 SOURCES += \
     main.cpp \
-    runapplet.cpp
+    runapplet.cpp \
+    utils.c
 
 HEADERS += \
-    runapplet.h
+    runapplet.h \
+    utils.h \
+    utils.hpp
 
 FORMS += \
     runapplet.ui

run-applet/runapplet.cpp

@@ -1,10 +1,12 @@
 #include "runapplet.h"
 #include "ui_runapplet.h"
+#include "utils.hpp"
 
 #include <QLineEdit>
 #include <QProcess>
 #include <QMessageBox>
 #include <QSettings>
+#include <QFileDialog>
 
 RunApplet::RunApplet(QWidget *parent)
     : QDialog(parent)
@@ -25,7 +27,19 @@ RunApplet::RunApplet(QWidget *parent)
         qApp->quit();
     });
 
-    connect(ui->okBtn, &QPushButton::clicked, this, &RunApplet::runApp);
+    connect(ui->okBtn, &QPushButton::clicked, this, [&]() {
+        runApp(ui->comboBox->currentText());
+    });
+
+    connect(ui->browseBtn, &QPushButton::clicked, this, [&]() {
+        QString file = QFileDialog::getOpenFileName(this, tr("Browse"), "", tr("All Files (*)"));
+        if (file == "") return;
+        ui->comboBox->lineEdit()->setText(file);
+    });
+
+    connect(ui->comboBox->lineEdit(), &QLineEdit::textChanged, this, [&]() {
+        ui->okBtn->setDisabled(ui->comboBox->lineEdit()->text() == "");
+    });
 }
 
 RunApplet::~RunApplet()
@@ -33,9 +47,17 @@ RunApplet::~RunApplet()
     delete ui;
 }
 
-void RunApplet::runApp() {
-    QString command = ui->comboBox->currentText();
-    QStringList args = command.split(" ");
+void RunApplet::runApp(QString command) {
+    QStringList args;
+
+    int p_argc;
+    uint32_t p_err;
+    wchar_t** p_args = wine_parse_command_line(command.toStdWString().c_str(), &p_argc, &p_err);
+
+    for (int i = 0; i < p_argc; i++) {
+        args.push_back(QString::fromWCharArray(p_args[i]));
+    }
+
     QProcess *process = new QProcess;
     process->setProgram(args[0]);
     args.remove(0);

run-applet/runapplet.h

@@ -20,7 +20,7 @@ public:
 private:
     Ui::RunApplet *ui;
 
-    void runApp();
+    void runApp(QString command);
 
     void saveState();
     void restoreState();

run-applet/utils.c

@@ -0,0 +1,284 @@
+#include "utils.h"
+
+#include <stdlib.h>
+
+/*
+ * Copyright 2002 Jon Griffiths
+ * Copyright 2016 Sebastian Lackner
+ *
+ * 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; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * 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 St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#define MAX_PATH 1024
+
+/*************************************************************************
+ * CommandLineToArgvW            [SHCORE.@]
+ *
+ * We must interpret the quotes in the command line to rebuild the argv
+ * array correctly:
+ * - arguments are separated by spaces or tabs
+ * - quotes serve as optional argument delimiters
+ *   '"a b"'   -> 'a b'
+ * - escaped quotes must be converted back to '"'
+ *   '\"'      -> '"'
+ * - consecutive backslashes preceding a quote see their number halved with
+ *   the remainder escaping the quote:
+ *   2n   backslashes + quote -> n backslashes + quote as an argument delimiter
+ *   2n+1 backslashes + quote -> n backslashes + literal quote
+ * - backslashes that are not followed by a quote are copied literally:
+ *   'a\b'     -> 'a\b'
+ *   'a\\b'    -> 'a\\b'
+ * - in quoted strings, consecutive quotes see their number divided by three
+ *   with the remainder modulo 3 deciding whether to close the string or not.
+ *   Note that the opening quote must be counted in the consecutive quotes,
+ *   that's the (1+) below:
+ *   (1+) 3n   quotes -> n quotes
+ *   (1+) 3n+1 quotes -> n quotes plus closes the quoted string
+ *   (1+) 3n+2 quotes -> n+1 quotes plus closes the quoted string
+ * - in unquoted strings, the first quote opens the quoted string and the
+ *   remaining consecutive quotes follow the above rule.
+ */
+
+wchar_t** wine_parse_command_line(const wchar_t *cmdline, int *numargs, uint32_t* error)
+{
+    int qcount, bcount;
+    const wchar_t *s;
+    wchar_t **argv;
+    uint32_t argc;
+    wchar_t *d;
+
+    *error = 0;
+    if (!numargs)
+    {
+        *error = ERROR_INVALID_PARAMETER;
+        return NULL;
+    }
+
+    // This functionality is not used and requires passing in an extra argument
+    // if (*cmdline == 0)
+    // {
+    //     /* Return the path to the executable */
+    //     uint32_t len, deslen = MAX_PATH, size;
+
+    //     size = sizeof(wchar_t *) * 2 + deslen * sizeof(wchar_t);
+    //     for (;;)
+    //     {
+    //         if (!(argv = malloc(size))) return NULL;
+    //         len = GetModuleFileNameW(0, (wchar_t *)(argv + 2), deslen);
+    //         if (!len)
+    //         {
+    //             free(argv);
+    //             return NULL;
+    //         }
+    //         if (len < deslen) break;
+    //         deslen *= 2;
+    //         size = sizeof(wchar_t *) * 2 + deslen * sizeof(wchar_t);
+    //         free(argv);
+    //     }
+    //     argv[0] = (wchar_t *)(argv + 2);
+    //     argv[1] = NULL;
+    //     *numargs = 1;
+
+    //     return argv;
+    // }
+
+    /* --- First count the arguments */
+    argc = 1;
+    s = cmdline;
+    /* The first argument, the executable path, follows special rules */
+    if (*s == '"')
+    {
+        /* The executable path ends at the next quote, no matter what */
+        s++;
+        while (*s)
+            if (*s++ == '"')
+                break;
+    }
+    else
+    {
+        /* The executable path ends at the next space, no matter what */
+        while (*s && *s != ' ' && *s != '\t')
+            s++;
+    }
+    /* skip to the first argument, if any */
+    while (*s == ' ' || *s == '\t')
+        s++;
+    if (*s)
+        argc++;
+
+    /* Analyze the remaining arguments */
+    qcount = bcount = 0;
+    while (*s)
+    {
+        if ((*s == ' ' || *s == '\t') && qcount == 0)
+        {
+            /* skip to the next argument and count it if any */
+            while (*s == ' ' || *s == '\t')
+                s++;
+            if (*s)
+                argc++;
+            bcount = 0;
+        }
+        else if (*s == '\\')
+        {
+            /* '\', count them */
+            bcount++;
+            s++;
+        }
+        else if (*s == '"')
+        {
+            /* '"' */
+            if ((bcount & 1) == 0)
+                qcount++; /* unescaped '"' */
+            s++;
+            bcount = 0;
+            /* consecutive quotes, see comment in copying code below */
+            while (*s == '"')
+            {
+                qcount++;
+                s++;
+            }
+            qcount = qcount % 3;
+            if (qcount == 2)
+                qcount = 0;
+        }
+        else
+        {
+            /* a regular character */
+            bcount = 0;
+            s++;
+        }
+    }
+
+    /* Allocate in a single lump, the string array, and the strings that go
+     * with it. This way the caller can make a single LocalFree() call to free
+     * both, as per MSDN.
+     */
+    argv = malloc((argc + 1) * sizeof(wchar_t *) + (wcslen(cmdline) + 1) * sizeof(wchar_t));
+    if (!argv)
+        return NULL;
+
+    /* --- Then split and copy the arguments */
+    argv[0] = d = wcscpy((wchar_t *)(argv + argc + 1), cmdline);
+    argc = 1;
+    /* The first argument, the executable path, follows special rules */
+    if (*d == '"')
+    {
+        /* The executable path ends at the next quote, no matter what */
+        s = d + 1;
+        while (*s)
+        {
+            if (*s == '"')
+            {
+                s++;
+                break;
+            }
+            *d++ = *s++;
+        }
+    }
+    else
+    {
+        /* The executable path ends at the next space, no matter what */
+        while (*d && *d != ' ' && *d != '\t')
+            d++;
+        s = d;
+        if (*s)
+            s++;
+    }
+    /* close the executable path */
+    *d++ = 0;
+    /* skip to the first argument and initialize it if any */
+    while (*s == ' ' || *s == '\t')
+        s++;
+    if (!*s)
+    {
+        /* There are no parameters so we are all done */
+        argv[argc] = NULL;
+        *numargs = argc;
+        return argv;
+    }
+
+    /* Split and copy the remaining arguments */
+    argv[argc++] = d;
+    qcount = bcount = 0;
+    while (*s)
+    {
+        if ((*s == ' ' || *s == '\t') && qcount == 0)
+        {
+            /* close the argument */
+            *d++ = 0;
+            bcount = 0;
+
+            /* skip to the next one and initialize it if any */
+            do {
+                s++;
+            } while (*s == ' ' || *s == '\t');
+            if (*s)
+                argv[argc++] = d;
+        }
+        else if (*s=='\\')
+        {
+            *d++ = *s++;
+            bcount++;
+        }
+        else if (*s == '"')
+        {
+            if ((bcount & 1) == 0)
+            {
+                /* Preceded by an even number of '\', this is half that
+                 * number of '\', plus a quote which we erase.
+                 */
+                d -= bcount / 2;
+                qcount++;
+            }
+            else
+            {
+                /* Preceded by an odd number of '\', this is half that
+                 * number of '\' followed by a '"'
+                 */
+                d = d - bcount / 2 - 1;
+                *d++ = '"';
+            }
+            s++;
+            bcount = 0;
+            /* Now count the number of consecutive quotes. Note that qcount
+             * already takes into account the opening quote if any, as well as
+             * the quote that lead us here.
+             */
+            while (*s == '"')
+            {
+                if (++qcount == 3)
+                {
+                    *d++ = '"';
+                    qcount = 0;
+                }
+                s++;
+            }
+            if (qcount == 2)
+                qcount = 0;
+        }
+        else
+        {
+            /* a regular character */
+            *d++ = *s++;
+            bcount = 0;
+        }
+    }
+    *d = '\0';
+    argv[argc] = NULL;
+    *numargs = argc;
+
+    return argv;
+}

run-applet/utils.h

@@ -0,0 +1,8 @@
+#pragma once
+
+#include <wchar.h>
+#include <stdint.h>
+
+#define ERROR_INVALID_PARAMETER -1
+
+wchar_t** wine_parse_command_line(const wchar_t *cmdline, int *numargs, uint32_t* error);

run-applet/utils.hpp

@@ -0,0 +1,9 @@
+#pragma once
+
+#include <cstdint>
+
+#define ERROR_INVALID_PARAMETER -1
+
+extern "C" {
+wchar_t** wine_parse_command_line(const wchar_t *cmdline, int *numargs, uint32_t* error);
+}