2010-08-18 17:40:27 -05:00
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import std.os.libc;
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2010-08-05 01:09:25 -05:00
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import std._str;
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import std._vec;
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2010-08-18 17:40:27 -05:00
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type stdio_reader = unsafe obj {
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fn getc() -> int;
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2010-08-20 14:12:11 -05:00
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fn ungetc(int i);
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2010-08-18 17:40:27 -05:00
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};
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fn new_stdio_reader(str path) -> stdio_reader {
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2010-08-20 14:12:11 -05:00
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unsafe obj stdio_FILE_reader(os.libc.FILE f) {
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fn getc() -> int {
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ret os.libc.fgetc(f);
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}
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fn ungetc(int i) {
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os.libc.ungetc(i, f);
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}
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drop {
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os.libc.fclose(f);
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}
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2010-08-18 17:40:27 -05:00
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}
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2010-08-20 14:12:11 -05:00
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ret stdio_FILE_reader(os.libc.fopen(_str.buf(path),
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_str.buf("r")));
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2010-08-18 17:40:27 -05:00
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}
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2010-07-13 16:24:47 -05:00
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type buf_reader = unsafe obj {
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2010-08-20 14:12:11 -05:00
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fn read() -> vec[u8];
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2010-06-23 23:03:09 -05:00
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};
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2010-08-04 14:59:48 -05:00
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type buf_writer = unsafe obj {
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2010-08-20 14:12:11 -05:00
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fn write(vec[u8] v);
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2010-08-04 14:59:48 -05:00
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};
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2010-07-13 16:24:47 -05:00
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fn default_bufsz() -> uint {
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2010-08-20 14:12:11 -05:00
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ret 4096u;
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2010-07-13 16:24:47 -05:00
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}
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fn new_buf() -> vec[u8] {
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2010-08-20 14:12:11 -05:00
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ret _vec.alloc[u8](default_bufsz());
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2010-07-13 16:24:47 -05:00
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}
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2010-08-04 14:59:48 -05:00
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fn new_buf_reader(str path) -> buf_reader {
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2010-06-23 23:03:09 -05:00
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2010-08-20 14:12:11 -05:00
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unsafe obj fd_buf_reader(int fd, mutable vec[u8] buf) {
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2010-07-13 16:24:47 -05:00
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2010-08-20 14:12:11 -05:00
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fn read() -> vec[u8] {
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2010-07-13 16:24:47 -05:00
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2010-08-20 14:12:11 -05:00
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// Ensure our buf is singly-referenced.
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if (_vec.rustrt.refcount[u8](buf) != 1u) {
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buf = new_buf();
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}
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2010-07-13 16:24:47 -05:00
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2010-08-20 14:12:11 -05:00
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auto len = default_bufsz();
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auto vbuf = _vec.buf[u8](buf);
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auto count = os.libc.read(fd, vbuf, len);
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2010-06-23 23:03:09 -05:00
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2010-08-20 14:12:11 -05:00
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if (count < 0) {
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log "error filling buffer";
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log sys.rustrt.last_os_error();
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fail;
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}
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_vec.len_set[u8](buf, count as uint);
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ret buf;
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}
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2010-08-19 19:37:22 -05:00
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2010-08-20 14:12:11 -05:00
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drop {
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os.libc.close(fd);
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}
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2010-06-23 23:03:09 -05:00
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}
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2010-07-13 16:24:47 -05:00
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2010-08-20 14:12:11 -05:00
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auto fd = os.libc.open(_str.buf(path),
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os.libc_constants.O_RDONLY() |
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os.libc_constants.O_BINARY(),
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0u);
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if (fd < 0) {
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log "error opening file for reading";
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log sys.rustrt.last_os_error();
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fail;
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2010-06-23 23:03:09 -05:00
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}
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2010-08-20 14:12:11 -05:00
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ret fd_buf_reader(fd, new_buf());
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2010-06-23 23:03:09 -05:00
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}
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2010-08-04 14:59:48 -05:00
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2010-08-04 19:14:11 -05:00
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type fileflag = tag(append(), create(), truncate());
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fn new_buf_writer(str path, vec[fileflag] flags) -> buf_writer {
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2010-08-04 14:59:48 -05:00
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2010-08-20 14:12:11 -05:00
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unsafe obj fd_buf_writer(int fd) {
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fn write(vec[u8] v) {
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auto len = _vec.len[u8](v);
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auto count = 0u;
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auto vbuf;
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while (count < len) {
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vbuf = _vec.buf_off[u8](v, count);
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auto nout = os.libc.write(fd, vbuf, len);
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if (nout < 0) {
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log "error dumping buffer";
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log sys.rustrt.last_os_error();
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fail;
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}
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count += nout as uint;
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}
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}
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drop {
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os.libc.close(fd);
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2010-08-04 14:59:48 -05:00
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}
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}
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2010-08-20 14:12:11 -05:00
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let int fflags =
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os.libc_constants.O_WRONLY() |
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os.libc_constants.O_BINARY();
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for (fileflag f in flags) {
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alt (f) {
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case (append()) { fflags |= os.libc_constants.O_APPEND(); }
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case (create()) { fflags |= os.libc_constants.O_CREAT(); }
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case (truncate()) { fflags |= os.libc_constants.O_TRUNC(); }
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}
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2010-08-04 14:59:48 -05:00
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}
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2010-08-20 14:12:11 -05:00
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auto fd = os.libc.open(_str.buf(path),
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fflags,
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os.libc_constants.S_IRUSR() |
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os.libc_constants.S_IWUSR());
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2010-08-04 19:14:11 -05:00
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2010-08-20 14:12:11 -05:00
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if (fd < 0) {
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log "error opening file for writing";
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log sys.rustrt.last_os_error();
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fail;
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2010-08-04 19:14:11 -05:00
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}
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2010-08-20 14:12:11 -05:00
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ret fd_buf_writer(fd);
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2010-08-04 14:59:48 -05:00
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}
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2010-08-05 01:09:25 -05:00
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2010-08-06 17:48:23 -05:00
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type writer =
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2010-08-20 14:12:11 -05:00
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unsafe obj {
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fn write_str(str s);
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fn write_int(int n);
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fn write_uint(uint n);
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};
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2010-08-06 17:48:23 -05:00
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fn file_writer(str path,
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vec[fileflag] flags)
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2010-08-20 14:12:11 -05:00
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-> writer
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2010-08-05 01:09:25 -05:00
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{
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2010-08-20 14:12:11 -05:00
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unsafe obj fw(buf_writer out) {
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fn write_str(str s) { out.write(_str.bytes(s)); }
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fn write_int(int n) { out.write(_str.bytes(_int.to_str(n, 10u))); }
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fn write_uint(uint n) { out.write(_str.bytes(_uint.to_str(n, 10u))); }
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}
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ret fw(new_buf_writer(path, flags));
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2010-08-05 01:09:25 -05:00
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}
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2010-08-18 17:40:27 -05:00
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//
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// Local Variables:
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// mode: rust
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// fill-column: 78;
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// indent-tabs-mode: nil
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// c-basic-offset: 4
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// buffer-file-coding-system: utf-8-unix
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// compile-command: "make -k -C .. 2>&1 | sed -e 's/\\/x\\//x:\\//g'";
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// End:
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//
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