struct sol_file_reader *
sol_file_reader_open(const char *filename)
{
int fd = -1, saved_errno;
struct sol_file_reader *fr, *result = NULL;
struct sol_buffer *buffer;
size_t size;
fr = malloc(sizeof(*fr));
if (!fr)
return NULL;
fr->mmapped = false;
fd = open(filename, O_RDONLY | O_CLOEXEC);
if (fd < 0)
goto err;
if (fstat(fd, &fr->st) < 0)
goto err;
fr->contents = mmap(NULL, fr->st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
if (fr->contents != MAP_FAILED) {
fr->mmapped = true;
goto success;
} else if (errno == ENOMEM) {
goto err;
}
buffer = sol_util_load_file_raw(fd);
if (!buffer)
goto err;
fr->contents = sol_buffer_steal(buffer, &size);
fr->st.st_size = size;
free(buffer);
success:
result = fr;
fr = NULL;
err:
saved_errno = errno;
free(fr);
if (fd >= 0)
close(fd);
errno = saved_errno;
return result;
}
char *
sol_util_load_file_string(const char *filename, size_t *size)
{
int fd = -1, saved_errno;
size_t read;
char *tmp, *data = NULL;
fd = open(filename, O_RDONLY | O_CLOEXEC);
if (fd < 0)
goto open_err;
data = sol_util_load_file_raw(fd, &read);
if (!data) {
data = strdup("");
read = 1;
} else if (data[read - 1] != '\0') {
tmp = realloc(data, read + 1);
if (!tmp)
goto err;
data = tmp;
data[read] = '\0';
}
close(fd);
if (size)
*size = read;
return data;
err:
saved_errno = errno;
free(data);
close(fd);
errno = saved_errno;
open_err:
if (size)
*size = 0;
return NULL;
}
char *
sol_util_load_file_fd_string(int fd, size_t *size)
{
int saved_errno;
size_t size_read;
char *data = NULL;
struct sol_buffer *buffer = NULL;
buffer = sol_util_load_file_raw(fd);
if (!buffer) {
data = strdup("");
size_read = 1;
} else {
buffer->flags = SOL_BUFFER_FLAGS_DEFAULT;
if (sol_buffer_ensure_nul_byte(buffer) < 0)
goto err;
data = sol_buffer_steal(buffer, &size_read);
if (!data)
goto err;
}
sol_buffer_free(buffer);
if (size)
*size = size_read;
return data;
err:
saved_errno = errno;
free(data);
sol_buffer_free(buffer);
errno = saved_errno;
if (size)
*size = 0;
return NULL;
}
