ascension: src/files.c@9c44c55d327a

consistently refer to windows by ID - fixes #381

This change discovered that the font cache is completely broken. We created issue #387 for this.

     1 /*

     2  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

     3  * Copyright 2023 Mike Becker. All rights reserved.

     4  *

     5  * Redistribution and use in source and binary forms, with or without

     6  * modification, are permitted provided that the following conditions are met:

     7  *

     8  *   1. Redistributions of source code must retain the above copyright

     9  *      notice, this list of conditions and the following disclaimer.

    10  *

    11  *   2. Redistributions in binary form must reproduce the above copyright

    12  *      notice, this list of conditions and the following disclaimer in the

    13  *      documentation and/or other materials provided with the distribution.

    14  *

    15  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

    16  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

    17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

    18  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE

    19  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

    20  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

    21  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

    22  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

    23  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

    24  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

    25  * POSSIBILITY OF SUCH DAMAGE.

    26  */

    28 #include "ascension/files.h"

    29 #include "ascension/error.h"

    31 #include <sys/mman.h>

    32 #include <sys/stat.h>

    33 #include <fcntl.h>

    34 #include <unistd.h>

    36 asc_file asc_file_mmap_rdonly(char const *filename) {

    37     int fd = open(filename, O_RDONLY);

    38     if (fd < 0) {

    39         asc_dprintf("Failed to open file %s", filename);

    40         return (cxstring) {NULL, 0};

    41     }

    43     struct stat statbuf;

    44     int err = fstat(fd, &statbuf);

    45     if (err < 0) {

    46         close(fd);

    47         asc_dprintf("Failed to stat file %s", filename);

    48         return (cxstring) {NULL, 0};

    49     }

    51     char const *data = mmap(NULL, statbuf.st_size, PROT_READ, MAP_SHARED, fd, 0);

    52     if (data == MAP_FAILED) {

    53         close(fd);

    54         asc_dprintf("Failed to map file %s into memory", filename);

    55         return (cxstring) {NULL, 0};

    56     }

    57     close(fd);

    59     return cx_strn(data, statbuf.st_size);

    60 }

    62 void asc_file_unmap(asc_file file) {

    63     munmap((void *) file.ptr, file.length);

    64 }

Mercurial > hg > ascension / file revision