mirror of https://github.com/odrling/Aegisub
85 lines
2.6 KiB
C
85 lines
2.6 KiB
C
/*****************************************************************************
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* asa: portable digital subtitle renderer
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*****************************************************************************
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* Copyright (C) 2007 David Lamparter
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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****************************************************************************/
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#include <windows.h>
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#include <string.h>
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#include "subhelp.h"
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#include <csri/openerr.h>
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csri_inst *subhelp_open_file(csri_rend *renderer,
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csri_inst *(*memopenfunc)(csri_rend *renderer, const void *data,
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size_t length, struct csri_openflag *flags),
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const char *filename, struct csri_openflag *flags)
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{
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csri_inst *rv = NULL;
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void *data;
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struct csri_openflag *err;
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HANDLE file, mapping;
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DWORD size;
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int namesize;
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wchar_t *namebuf;
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namesize = MultiByteToWideChar(CP_UTF8, 0, filename, -1, NULL, 0);
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if (!namesize)
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goto out_err;
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namesize++;
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namebuf = malloc(sizeof(wchar_t) * namesize);
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MultiByteToWideChar(CP_UTF8, 0, filename, -1, namebuf, namesize);
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file = CreateFileW(namebuf, GENERIC_READ, FILE_SHARE_READ,
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NULL, OPEN_EXISTING, 0, NULL);
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free(namebuf);
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if (file == INVALID_HANDLE_VALUE)
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goto out_err;
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size = GetFileSize(file, NULL);
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if (size == INVALID_FILE_SIZE || !size)
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goto out_closefile;
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mapping = CreateFileMappingW(file, NULL, PAGE_READONLY, 0, 0, NULL);
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if (!mapping)
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goto out_closefile;
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data = MapViewOfFile(mapping, FILE_MAP_READ, 0, 0, size);
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if (!data)
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goto out_closemap;
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rv = memopenfunc(renderer, data, size, flags);
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UnmapViewOfFile(data);
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CloseHandle(mapping);
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CloseHandle(file);
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return rv;
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out_closemap:
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CloseHandle(mapping);
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out_closefile:
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CloseHandle(file);
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out_err:
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for (err = flags; err; err = err->next)
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if (!strcmp(err->name, CSRI_EXT_OPENERR))
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break;
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if (err) {
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struct csri_openerr_flag *errd = err->data.otherval;
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errd->flags = CSRI_OPENERR_FILLED | CSRI_OPENERR_WINERR;
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errd->winerr = GetLastError();
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}
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return NULL;
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}
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