diff options
| -rw-r--r-- | share/txr/stdlib/doc-syms.tl | 1 | ||||
| -rw-r--r-- | stream.c | 12 | ||||
| -rw-r--r-- | stream.h | 1 | ||||
| -rw-r--r-- | txr.1 | 26 |
4 files changed, 40 insertions, 0 deletions
diff --git a/share/txr/stdlib/doc-syms.tl b/share/txr/stdlib/doc-syms.tl index 396905dd..223eb987 100644 --- a/share/txr/stdlib/doc-syms.tl +++ b/share/txr/stdlib/doc-syms.tl @@ -1861,6 +1861,7 @@ ("time-t" "N-03258244") ("time-usec" "N-03B6DB3D") ("time-utc" "N-001284ED") + ("tmpfile" "N-00FF7C41") ("tnode" "N-0008DDFB") ("tnodep" "N-00D8534F") ("to" "N-00AED1A7") @@ -4941,6 +4941,17 @@ val make_byte_input_stream(val obj) } } +val tmpfile_wrap(void) +{ + struct stdio_mode m_blank = stdio_mode_init_blank; + struct stdio_mode m = do_parse_mode(lit("w+b"), m_blank); + FILE *tf = tmpfile(); + if (tf != 0) + return set_mode_props(m, make_stdio_stream(tf, lit("tmpfile"))); + uw_throwf(file_error_s, lit("tmpnam failed: ~d/~s"), + num(errno), errno_to_str(errno), nao); +} + static val iobuf_free_list; val iobuf_get(void) @@ -5133,6 +5144,7 @@ void stream_init(void) reg_varl(intern(lit("indent-data"), user_package), num_fast(indent_data)); reg_varl(intern(lit("indent-code"), user_package), num_fast(indent_code)); reg_varl(intern(lit("indent-foff"), user_package), num_fast(indent_foff)); + reg_fun(intern(lit("tmpfile"), user_package), func_n0(tmpfile_wrap)); #if HAVE_SOCKETS uw_register_subtype(socket_error_s, error_s); @@ -251,4 +251,5 @@ val make_byte_input_stream(val obj); val iobuf_get(void); void iobuf_put(val buf); void iobuf_list_empty(void); +val tmpfile_wrap(void); void stream_init(void); @@ -55022,6 +55022,32 @@ and .code .. entries in Unix filesystems are not skipped. +.coNP Function @ tmpfile +.synb +.mets (tmpfile) +.syne +.desc +The +.code tmpfile +function creates a new temporary binary file which is different from any +existing file. It opens a stream for that file and returns the stream. The +stream is created with the +.code open-file +mode +.strn w+b . +When the stream is closed, or the \*(TX image terminates, the file is deleted. + +Note: the +.code tmpfile +function is implemented using the same-named ISO C and POSIX library function. +On POSIX systems of sufficient quality, +.code tmpfile +deletes the file before returning the open stream, such that the file object +continues to exist while the stream is open, but is not known by any name +in the file system. POSIX (IEEE Std 1003.1-2017) notes that in some +implementations, "a permanent file may be left behind if the process calling +tmpfile() is killed while it is processing a call to tmpfile". + .coNP Function @ make-string-input-stream .synb .mets (make-string-input-stream << string ) |