mirror of https://github.com/odrling/Aegisub
83 lines
2.3 KiB
C
83 lines
2.3 KiB
C
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/*****************************************************************************
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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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#ifdef HAVE_CONFIG_H
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#include "acconf.h"
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#endif
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifdef HAVE_SYS_TIME_H
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#include <sys/time.h>
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#endif
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#include <sys/types.h>
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#include <sys/stat.h>
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#ifdef HAVE_SYS_MMAN_H
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#include <sys/mman.h>
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#endif
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#include <fcntl.h>
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#include <errno.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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int fd;
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struct stat st;
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struct csri_openflag *err;
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fd = open(filename, O_RDONLY);
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if (fd == -1)
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goto out_err;
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if (fstat(fd, &st)
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|| !(data = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE,
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fd, 0))) {
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close(fd);
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goto out_err;
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}
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rv = memopenfunc(renderer, data, st.st_size, flags);
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munmap(data, st.st_size);
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close(fd);
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return rv;
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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 = (struct csri_openerr_flag *)
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err->data.otherval;
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errd->flags = CSRI_OPENERR_FILLED | CSRI_OPENERR_ERRNO;
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errd->posixerrno = errno;
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}
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return NULL;
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}
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