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authorDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2022-06-26 22:51:27 +0200
committerDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2022-07-08 19:17:35 +0200
commit359d71e90050a8b83f7bc7d2ecd4ff29c477cc22 (patch)
treedf2b7a585b78e6776446d4ca9be62a22db27f0a7 /lib/fstream/unix/istream.c
parent2087cc237cd0fe1ed29ebf891648bacb46f4833b (diff)
Cleanup: rename libfstream to libio, split headers
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'lib/fstream/unix/istream.c')
-rw-r--r--lib/fstream/unix/istream.c124
1 files changed, 0 insertions, 124 deletions
diff --git a/lib/fstream/unix/istream.c b/lib/fstream/unix/istream.c
deleted file mode 100644
index 5898141..0000000
--- a/lib/fstream/unix/istream.c
+++ /dev/null
@@ -1,124 +0,0 @@
-/* SPDX-License-Identifier: GPL-3.0-or-later */
-/*
- * istream.c
- *
- * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
- */
-#include "../internal.h"
-
-typedef struct {
- istream_t base;
- char *path;
- int fd;
- bool eof;
-
- sqfs_u8 buffer[BUFSZ];
-} file_istream_t;
-
-static int file_precache(istream_t *strm)
-{
- file_istream_t *file = (file_istream_t *)strm;
- ssize_t ret;
- size_t diff;
-
- while (strm->buffer_used < sizeof(file->buffer)) {
- diff = sizeof(file->buffer) - strm->buffer_used;
-
- ret = read(file->fd, strm->buffer + strm->buffer_used, diff);
-
- if (ret == 0) {
- file->eof = true;
- break;
- }
-
- if (ret < 0) {
- if (errno == EINTR)
- continue;
-
- perror(file->path);
- return -1;
- }
-
- strm->buffer_used += ret;
- }
-
- return 0;
-}
-
-static const char *file_get_filename(istream_t *strm)
-{
- file_istream_t *file = (file_istream_t *)strm;
-
- return file->path;
-}
-
-static void file_destroy(sqfs_object_t *obj)
-{
- file_istream_t *file = (file_istream_t *)obj;
-
- if (file->fd != STDIN_FILENO)
- close(file->fd);
-
- free(file->path);
- free(file);
-}
-
-istream_t *istream_open_file(const char *path)
-{
- file_istream_t *file = calloc(1, sizeof(*file));
- sqfs_object_t *obj = (sqfs_object_t *)file;
- istream_t *strm = (istream_t *)file;
-
- if (file == NULL) {
- perror(path);
- return NULL;
- }
-
- file->path = strdup(path);
- if (file->path == NULL) {
- perror(path);
- goto fail_free;
- }
-
- file->fd = open(path, O_RDONLY);
- if (file->fd < 0) {
- perror(path);
- goto fail_path;
- }
-
- strm->buffer = file->buffer;
- strm->precache = file_precache;
- strm->get_filename = file_get_filename;
- obj->destroy = file_destroy;
- return strm;
-fail_path:
- free(file->path);
-fail_free:
- free(file);
- return NULL;
-}
-
-istream_t *istream_open_stdin(void)
-{
- file_istream_t *file = calloc(1, sizeof(*file));
- sqfs_object_t *obj = (sqfs_object_t *)file;
- istream_t *strm = (istream_t *)file;
-
- if (file == NULL)
- goto fail;
-
- file->path = strdup("stdin");
- if (file->path == NULL)
- goto fail;
-
- file->fd = STDIN_FILENO;
- strm->buffer = file->buffer;
- strm->precache = file_precache;
- strm->get_filename = file_get_filename;
- obj->destroy = file_destroy;
- return strm;
-fail:
- perror("creating file wrapper for stdin");
- free(file);
- return NULL;
-}