glib2.0/glib/gwin32-private.c

81 lines
2.7 KiB
C

/* gwin32-private.c - private glib functions for gwin32.c
*
* Copyright 2019 Руслан Ижбулатов
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* 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, see <http://www.gnu.org/licenses/>.
*/
/* Copy @cmdline into @debugger, and substitute @pid for `%p`
* and @event for `%e`.
* If @debugger_size (in wchar_ts) is overflowed, return %FALSE.
* Also returns %FALSE when `%` is followed by anything other
* than `e` or `p`.
*/
static gboolean
_g_win32_subst_pid_and_event_w (wchar_t *local_debugger,
gsize debugger_size,
const wchar_t *cmdline,
DWORD pid,
guintptr event)
{
gsize i = 0, dbg_i = 0;
/* These are integers, and they can't be longer than 20 characters
* even when they are 64-bit and in decimal notation.
* Use 30 just to be sure.
*/
#define STR_BUFFER_SIZE 30
wchar_t pid_str[STR_BUFFER_SIZE] = {0};
gsize pid_str_len;
wchar_t event_str[STR_BUFFER_SIZE] = {0};
gsize event_str_len;
_snwprintf_s (pid_str, STR_BUFFER_SIZE, G_N_ELEMENTS (pid_str), L"%lu", pid);
pid_str[G_N_ELEMENTS (pid_str) - 1] = 0;
pid_str_len = wcslen (pid_str);
_snwprintf_s (event_str, STR_BUFFER_SIZE, G_N_ELEMENTS (pid_str), L"%Iu", event);
event_str[G_N_ELEMENTS (pid_str) - 1] = 0;
event_str_len = wcslen (event_str);
#undef STR_BUFFER_SIZE
while (cmdline[i] != 0 && dbg_i < debugger_size)
{
if (cmdline[i] != L'%')
local_debugger[dbg_i++] = cmdline[i++];
else if (cmdline[i + 1] == L'p')
{
gsize j = 0;
while (j < pid_str_len && dbg_i < debugger_size)
local_debugger[dbg_i++] = pid_str[j++];
i += 2;
}
else if (cmdline[i + 1] == L'e')
{
gsize j = 0;
while (j < event_str_len && dbg_i < debugger_size)
local_debugger[dbg_i++] = event_str[j++];
i += 2;
}
else
return FALSE;
}
if (dbg_i < debugger_size)
local_debugger[dbg_i] = 0;
else
return FALSE;
return TRUE;
}