--- /dev/null
+/* Lisp object printing and output streams.
+ Copyright (C) 1985, 1986, 1988, 1992-1995 Free Software Foundation, Inc.
+ Copyright (C) 1995, 1996 Ben Wing.
+
+This file is part of XEmacs.
+
+XEmacs is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 2, or (at your option) any
+later version.
+
+XEmacs is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with XEmacs; see the file COPYING. If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+/* Synched up with: Not synched with FSF. */
+
+/* This file has been Mule-ized. */
+
+/* Seriously hacked on by Ben Wing for Mule. */
+
+#include <config.h>
+#include "lisp.h"
+
+#include "backtrace.h"
+#include "buffer.h"
+#include "bytecode.h"
+#include "console-tty.h"
+#include "console-stream.h"
+#include "extents.h"
+#include "frame.h"
+#include "insdel.h"
+#include "lstream.h"
+#include "sysfile.h"
+
+#include <float.h>
+/* Define if not in float.h */
+#ifndef DBL_DIG
+#define DBL_DIG 16
+#endif
+
+Lisp_Object Vstandard_output, Qstandard_output;
+
+/* The subroutine object for external-debugging-output is kept here
+ for the convenience of the debugger. */
+Lisp_Object Qexternal_debugging_output;
+Lisp_Object Qalternate_debugging_output;
+
+/* Avoid actual stack overflow in print. */
+static int print_depth;
+
+/* Detect most circularities to print finite output. */
+#define PRINT_CIRCLE 200
+Lisp_Object being_printed[PRINT_CIRCLE];
+
+/* Maximum length of list or vector to print in full; noninteger means
+ effectively infinity */
+
+Lisp_Object Vprint_length;
+Lisp_Object Qprint_length;
+
+/* Maximum length of string to print in full; noninteger means
+ effectively infinity */
+
+Lisp_Object Vprint_string_length;
+Lisp_Object Qprint_string_length;
+
+/* Maximum depth of list to print in full; noninteger means
+ effectively infinity. */
+
+Lisp_Object Vprint_level;
+
+/* Label to use when making echo-area messages. */
+
+Lisp_Object Vprint_message_label;
+
+/* Nonzero means print newlines in strings as \n. */
+
+int print_escape_newlines;
+int print_readably;
+
+/* Non-nil means print #: before uninterned symbols.
+ Neither t nor nil means so that and don't clear Vprint_gensym_alist
+ on entry to and exit from print functions. */
+Lisp_Object Vprint_gensym;
+Lisp_Object Vprint_gensym_alist;
+
+Lisp_Object Qprint_escape_newlines;
+Lisp_Object Qprint_readably;
+
+Lisp_Object Qdisplay_error;
+Lisp_Object Qprint_message_label;
+
+/* Force immediate output of all printed data. Used for debugging. */
+int print_unbuffered;
+
+FILE *termscript; /* Stdio stream being used for copy of all output. */
+
+\f
+
+int stdout_needs_newline;
+
+/* Write a string (in internal format) to stdio stream STREAM. */
+
+void
+write_string_to_stdio_stream (FILE *stream, struct console *con,
+ CONST Bufbyte *str,
+ Bytecount offset, Bytecount len,
+ enum external_data_format fmt)
+{
+ int extlen;
+ CONST Extbyte *extptr;
+
+ GET_CHARPTR_EXT_DATA_ALLOCA (str + offset, len, fmt, extptr, extlen);
+ if (stream)
+ {
+ fwrite (extptr, 1, extlen, stream);
+#ifdef WINDOWSNT
+ /* Q122442 says that pipes are "treated as files, not as
+ devices", and that this is a feature. Before I found that
+ article, I thought it was a bug. Thanks MS, I feel much
+ better now. - kkm */
+ if (stream == stdout || stream == stderr)
+ fflush (stream);
+#endif
+ }
+ else
+ {
+ assert (CONSOLE_TTY_P (con));
+ Lstream_write (XLSTREAM (CONSOLE_TTY_DATA (con)->outstream),
+ extptr, extlen);
+ }
+ if (stream == stdout || stream == stderr ||
+ (!stream && CONSOLE_TTY_DATA (con)->is_stdio))
+ {
+ if (termscript)
+ {
+ fwrite (extptr, 1, extlen, termscript);
+ fflush (termscript);
+ }
+ stdout_needs_newline = (extptr[extlen - 1] != '\n');
+ }
+}
+
+/* Write a string to the output location specified in FUNCTION.
+ Arguments NONRELOC, RELOC, OFFSET, and LEN are as in
+ buffer_insert_string_1() in insdel.c. */
+
+static void
+output_string (Lisp_Object function, CONST Bufbyte *nonreloc,
+ Lisp_Object reloc, Bytecount offset, Bytecount len)
+{
+ /* This function can GC */
+ Charcount cclen;
+ /* We change the value of nonreloc (fetching it from reloc as
+ necessary), but we don't want to pass this changed value on to
+ other functions that take both a nonreloc and a reloc, or things
+ may get confused and an assertion failure in
+ fixup_internal_substring() may get triggered. */
+ CONST Bufbyte *newnonreloc = nonreloc;
+ struct gcpro gcpro1, gcpro2;
+
+ /* Emacs won't print whilst GCing, but an external debugger might */
+ if (gc_in_progress) return;
+
+ /* Perhaps not necessary but probably safer. */
+ GCPRO2 (function, reloc);
+
+ fixup_internal_substring (newnonreloc, reloc, offset, &len);
+
+ if (STRINGP (reloc))
+ newnonreloc = XSTRING_DATA (reloc);
+
+ cclen = bytecount_to_charcount (newnonreloc + offset, len);
+
+ if (LSTREAMP (function))
+ {
+ if (STRINGP (reloc))
+ {
+ /* Protect against Lstream_write() causing a GC and
+ relocating the string. For small strings, we do it by
+ alloc'ing the string and using a copy; for large strings,
+ we inhibit GC. */
+ if (len < 65536)
+ {
+ Bufbyte *copied = alloca_array (Bufbyte, len);
+ memcpy (copied, newnonreloc + offset, len);
+ Lstream_write (XLSTREAM (function), copied, len);
+ }
+ else
+ {
+ int speccount = specpdl_depth ();
+ record_unwind_protect (restore_gc_inhibit,
+ make_int (gc_currently_forbidden));
+ gc_currently_forbidden = 1;
+ Lstream_write (XLSTREAM (function), newnonreloc + offset, len);
+ unbind_to (speccount, Qnil);
+ }
+ }
+ else
+ Lstream_write (XLSTREAM (function), newnonreloc + offset, len);
+
+ if (print_unbuffered)
+ Lstream_flush (XLSTREAM (function));
+ }
+ else if (BUFFERP (function))
+ {
+ CHECK_LIVE_BUFFER (function);
+ buffer_insert_string (XBUFFER (function), nonreloc, reloc, offset, len);
+ }
+ else if (MARKERP (function))
+ {
+ /* marker_position() will err if marker doesn't point anywhere. */
+ Bufpos spoint = marker_position (function);
+
+ buffer_insert_string_1 (XMARKER (function)->buffer,
+ spoint, nonreloc, reloc, offset, len,
+ 0);
+ Fset_marker (function, make_int (spoint + cclen),
+ Fmarker_buffer (function));
+ }
+ else if (FRAMEP (function))
+ {
+ /* This gets used by functions not invoking print_prepare(),
+ such as Fwrite_char, Fterpri, etc.. */
+ struct frame *f = XFRAME (function);
+ CHECK_LIVE_FRAME (function);
+
+ if (!EQ (Vprint_message_label, echo_area_status (f)))
+ clear_echo_area_from_print (f, Qnil, 1);
+ echo_area_append (f, nonreloc, reloc, offset, len, Vprint_message_label);
+ }
+ else if (EQ (function, Qt) || EQ (function, Qnil))
+ {
+ write_string_to_stdio_stream (stdout, 0, newnonreloc, offset, len,
+ FORMAT_TERMINAL);
+ }
+ else
+ {
+ Charcount ccoff = bytecount_to_charcount (newnonreloc, offset);
+ Charcount iii;
+
+ for (iii = ccoff; iii < cclen + ccoff; iii++)
+ {
+ call1 (function,
+ make_char (charptr_emchar_n (newnonreloc, iii)));
+ if (STRINGP (reloc))
+ newnonreloc = XSTRING_DATA (reloc);
+ }
+ }
+
+ UNGCPRO;
+}
+\f
+#define RESET_PRINT_GENSYM do { \
+ if (!CONSP (Vprint_gensym)) \
+ Vprint_gensym_alist = Qnil; \
+} while (0)
+
+static Lisp_Object
+canonicalize_printcharfun (Lisp_Object printcharfun)
+{
+ if (NILP (printcharfun))
+ printcharfun = Vstandard_output;
+
+ if (EQ (printcharfun, Qt) || NILP (printcharfun))
+ printcharfun = Fselected_frame (Qnil); /* print to minibuffer */
+
+ return printcharfun;
+}
+
+static Lisp_Object
+print_prepare (Lisp_Object printcharfun, Lisp_Object *frame_kludge)
+{
+ /* Emacs won't print whilst GCing, but an external debugger might */
+ if (gc_in_progress)
+ return Qnil;
+
+ RESET_PRINT_GENSYM;
+
+ printcharfun = canonicalize_printcharfun (printcharfun);
+
+ /* Here we could safely return the canonicalized PRINTCHARFUN.
+ However, if PRINTCHARFUN is a frame, printing of complex
+ structures becomes very expensive, because `append-message'
+ (called by echo_area_append) gets called as many times as
+ output_string() is called (and that's a *lot*). append-message
+ tries to keep top of the message-stack in sync with the contents
+ of " *Echo Area" buffer, consing a new string for each component
+ of the printed structure. For instance, if you print (a a),
+ append-message will cons up the following strings:
+
+ "("
+ "(a"
+ "(a "
+ "(a a"
+ "(a a)"
+
+ and will use only the last one. With larger objects, this turns
+ into an O(n^2) consing frenzy that locks up XEmacs in incessant
+ garbage collection.
+
+ We prevent this by creating a resizing_buffer stream and letting
+ the printer write into it. print_finish() will notice this
+ stream, and invoke echo_area_append() with the stream's buffer,
+ only once. */
+ if (FRAMEP (printcharfun))
+ {
+ CHECK_LIVE_FRAME (printcharfun);
+ *frame_kludge = printcharfun;
+ printcharfun = make_resizing_buffer_output_stream ();
+ }
+
+ return printcharfun;
+}
+
+static void
+print_finish (Lisp_Object stream, Lisp_Object frame_kludge)
+{
+ /* Emacs won't print whilst GCing, but an external debugger might */
+ if (gc_in_progress)
+ return;
+
+ RESET_PRINT_GENSYM;
+
+ /* See the comment in print_prepare(). */
+ if (FRAMEP (frame_kludge))
+ {
+ struct frame *f = XFRAME (frame_kludge);
+ Lstream *str = XLSTREAM (stream);
+ CHECK_LIVE_FRAME (frame_kludge);
+
+ Lstream_flush (str);
+ if (!EQ (Vprint_message_label, echo_area_status (f)))
+ clear_echo_area_from_print (f, Qnil, 1);
+ echo_area_append (f, resizing_buffer_stream_ptr (str),
+ Qnil, 0, Lstream_byte_count (str),
+ Vprint_message_label);
+ Lstream_delete (str);
+ }
+}
+\f
+/* Used for printing a single-byte character (*not* any Emchar). */
+#define write_char_internal(string_of_length_1, stream) \
+ output_string (stream, (CONST Bufbyte *) (string_of_length_1), \
+ Qnil, 0, 1)
+
+/* NOTE: Do not call this with the data of a Lisp_String, as
+ printcharfun might cause a GC, which might cause the string's data
+ to be relocated. To princ a Lisp string, use:
+
+ print_internal (string, printcharfun, 0);
+
+ Also note that STREAM should be the result of
+ canonicalize_printcharfun() (i.e. Qnil means stdout, not
+ Vstandard_output, etc.) */
+void
+write_string_1 (CONST Bufbyte *str, Bytecount size, Lisp_Object stream)
+{
+ /* This function can GC */
+#ifdef ERROR_CHECK_BUFPOS
+ assert (size >= 0);
+#endif
+ output_string (stream, str, Qnil, 0, size);
+}
+
+void
+write_c_string (CONST char *str, Lisp_Object stream)
+{
+ /* This function can GC */
+ write_string_1 ((CONST Bufbyte *) str, strlen (str), stream);
+}
+
+\f
+DEFUN ("write-char", Fwrite_char, 1, 2, 0, /*
+Output character CH to stream STREAM.
+STREAM defaults to the value of `standard-output' (which see).
+*/
+ (ch, stream))
+{
+ /* This function can GC */
+ Bufbyte str[MAX_EMCHAR_LEN];
+ Bytecount len;
+
+ CHECK_CHAR_COERCE_INT (ch);
+ len = set_charptr_emchar (str, XCHAR (ch));
+ output_string (canonicalize_printcharfun (stream), str, Qnil, 0, len);
+ return ch;
+}
+
+void
+temp_output_buffer_setup (CONST char *bufname)
+{
+ /* This function can GC */
+ struct buffer *old = current_buffer;
+ Lisp_Object buf;
+
+#ifdef I18N3
+ /* #### This function should accept a Lisp_Object instead of a char *,
+ so that proper translation on the buffer name can occur. */
+#endif
+
+ Fset_buffer (Fget_buffer_create (build_string (bufname)));
+
+ current_buffer->read_only = Qnil;
+ Ferase_buffer (Qnil);
+
+ XSETBUFFER (buf, current_buffer);
+ specbind (Qstandard_output, buf);
+
+ set_buffer_internal (old);
+}
+
+Lisp_Object
+internal_with_output_to_temp_buffer (CONST char *bufname,
+ Lisp_Object (*function) (Lisp_Object arg),
+ Lisp_Object arg,
+ Lisp_Object same_frame)
+{
+ int speccount = specpdl_depth ();
+ struct gcpro gcpro1, gcpro2, gcpro3;
+ Lisp_Object buf = Qnil;
+
+ GCPRO3 (buf, arg, same_frame);
+
+ temp_output_buffer_setup (GETTEXT (bufname));
+ buf = Vstandard_output;
+
+ arg = (*function) (arg);
+
+ temp_output_buffer_show (buf, same_frame);
+ UNGCPRO;
+
+ return unbind_to (speccount, arg);
+}
+
+DEFUN ("with-output-to-temp-buffer", Fwith_output_to_temp_buffer, 1, UNEVALLED, 0, /*
+Bind `standard-output' to buffer BUFNAME, eval BODY, then show that buffer.
+The buffer is cleared out initially, and marked as unmodified when done.
+All output done by BODY is inserted in that buffer by default.
+The buffer is displayed in another window, but not selected.
+The value of the last form in BODY is returned.
+If BODY does not finish normally, the buffer BUFNAME is not displayed.
+
+If variable `temp-buffer-show-function' is non-nil, call it at the end
+to get the buffer displayed. It gets one argument, the buffer to display.
+*/
+ (args))
+{
+ /* This function can GC */
+ struct gcpro gcpro1;
+ Lisp_Object name;
+ int speccount = specpdl_depth ();
+ Lisp_Object val;
+
+#ifdef I18N3
+ /* #### should set the buffer to be translating. See print_internal(). */
+#endif
+
+ GCPRO1 (args);
+ name = Feval (XCAR (args));
+ UNGCPRO;
+
+ CHECK_STRING (name);
+ temp_output_buffer_setup ((char *) XSTRING_DATA (name));
+
+ val = Fprogn (XCDR (args));
+
+ temp_output_buffer_show (Vstandard_output, Qnil);
+
+ return unbind_to (speccount, val);
+}
+\f
+DEFUN ("terpri", Fterpri, 0, 1, 0, /*
+Output a newline to STREAM.
+If STREAM is omitted or nil, the value of `standard-output' is used.
+*/
+ (stream))
+{
+ /* This function can GC */
+ write_char_internal ("\n", canonicalize_printcharfun (stream));
+ return Qt;
+}
+
+DEFUN ("prin1", Fprin1, 1, 2, 0, /*
+Output the printed representation of OBJECT, any Lisp object.
+Quoting characters are printed when needed to make output that `read'
+can handle, whenever this is possible.
+Output stream is STREAM, or value of `standard-output' (which see).
+*/
+ (object, stream))
+{
+ /* This function can GC */
+ Lisp_Object frame = Qnil;
+ struct gcpro gcpro1, gcpro2;
+ GCPRO2 (object, stream);
+
+ print_depth = 0;
+ stream = print_prepare (stream, &frame);
+ print_internal (object, stream, 1);
+ print_finish (stream, frame);
+
+ UNGCPRO;
+ return object;
+}
+
+DEFUN ("prin1-to-string", Fprin1_to_string, 1, 2, 0, /*
+Return a string containing the printed representation of OBJECT,
+any Lisp object. Quoting characters are used when needed to make output
+that `read' can handle, whenever this is possible, unless the optional
+second argument NOESCAPE is non-nil.
+*/
+ (object, noescape))
+{
+ /* This function can GC */
+ Lisp_Object result = Qnil;
+ Lisp_Object stream = make_resizing_buffer_output_stream ();
+ Lstream *str = XLSTREAM (stream);
+ /* gcpro OBJECT in case a caller forgot to do so */
+ struct gcpro gcpro1, gcpro2, gcpro3;
+ GCPRO3 (object, stream, result);
+
+ print_depth = 0;
+ RESET_PRINT_GENSYM;
+ print_internal (object, stream, NILP (noescape));
+ RESET_PRINT_GENSYM;
+ Lstream_flush (str);
+ UNGCPRO;
+ result = make_string (resizing_buffer_stream_ptr (str),
+ Lstream_byte_count (str));
+ Lstream_delete (str);
+ return result;
+}
+
+DEFUN ("princ", Fprinc, 1, 2, 0, /*
+Output the printed representation of OBJECT, any Lisp object.
+No quoting characters are used; no delimiters are printed around
+the contents of strings.
+Output stream is STREAM, or value of standard-output (which see).
+*/
+ (object, stream))
+{
+ /* This function can GC */
+ Lisp_Object frame = Qnil;
+ struct gcpro gcpro1, gcpro2;
+
+ GCPRO2 (object, stream);
+ stream = print_prepare (stream, &frame);
+ print_depth = 0;
+ print_internal (object, stream, 0);
+ print_finish (stream, frame);
+ UNGCPRO;
+ return object;
+}
+
+DEFUN ("print", Fprint, 1, 2, 0, /*
+Output the printed representation of OBJECT, with newlines around it.
+Quoting characters are printed when needed to make output that `read'
+can handle, whenever this is possible.
+Output stream is STREAM, or value of `standard-output' (which see).
+*/
+ (object, stream))
+{
+ /* This function can GC */
+ Lisp_Object frame = Qnil;
+ struct gcpro gcpro1, gcpro2;
+
+ GCPRO2 (object, stream);
+ stream = print_prepare (stream, &frame);
+ print_depth = 0;
+ write_char_internal ("\n", stream);
+ print_internal (object, stream, 1);
+ write_char_internal ("\n", stream);
+ print_finish (stream, frame);
+ UNGCPRO;
+ return object;
+}
+\f
+/* Print an error message for the error DATA to STREAM. This is a
+ complete implementation of `display-error', which used to be in
+ Lisp (see prim/cmdloop.el). It was ported to C so it can be used
+ efficiently by Ferror_message_string. Fdisplay_error and
+ Ferror_message_string are trivial wrappers around this function.
+
+ STREAM should be the result of canonicalize_printcharfun(). */
+static void
+print_error_message (Lisp_Object error_object, Lisp_Object stream)
+{
+ /* This function can GC */
+ Lisp_Object type = Fcar_safe (error_object);
+ Lisp_Object method = Qnil;
+ Lisp_Object tail;
+
+ /* No need to GCPRO anything under the assumption that ERROR_OBJECT
+ is GCPRO'd. */
+
+ if (! (CONSP (error_object) && SYMBOLP (type)
+ && CONSP (Fget (type, Qerror_conditions, Qnil))))
+ goto error_throw;
+
+ tail = XCDR (error_object);
+ while (!NILP (tail))
+ {
+ if (CONSP (tail))
+ tail = XCDR (tail);
+ else
+ goto error_throw;
+ }
+ tail = Fget (type, Qerror_conditions, Qnil);
+ while (!NILP (tail))
+ {
+ if (!(CONSP (tail) && SYMBOLP (XCAR (tail))))
+ goto error_throw;
+ else if (!NILP (Fget (XCAR (tail), Qdisplay_error, Qnil)))
+ {
+ method = Fget (XCAR (tail), Qdisplay_error, Qnil);
+ goto error_throw;
+ }
+ else
+ tail = XCDR (tail);
+ }
+ /* Default method */
+ {
+ int first = 1;
+ int speccount = specpdl_depth ();
+
+ specbind (Qprint_message_label, Qerror);
+ tail = Fcdr (error_object);
+ if (EQ (type, Qerror))
+ {
+ print_internal (Fcar (tail), stream, 0);
+ tail = Fcdr (tail);
+ }
+ else
+ {
+ Lisp_Object errmsg = Fget (type, Qerror_message, Qnil);
+ if (NILP (errmsg))
+ print_internal (type, stream, 0);
+ else
+ print_internal (LISP_GETTEXT (errmsg), stream, 0);
+ }
+ while (!NILP (tail))
+ {
+ write_c_string (first ? ": " : ", ", stream);
+ print_internal (Fcar (tail), stream, 1);
+ tail = Fcdr (tail);
+ first = 0;
+ }
+ unbind_to (speccount, Qnil);
+ return;
+ /* not reached */
+ }
+
+ error_throw:
+ if (NILP (method))
+ {
+ write_c_string (GETTEXT ("Peculiar error "), stream);
+ print_internal (error_object, stream, 1);
+ return;
+ }
+ else
+ {
+ call2 (method, error_object, stream);
+ }
+}
+
+DEFUN ("error-message-string", Ferror_message_string, 1, 1, 0, /*
+Convert ERROR-OBJECT to an error message, and return it.
+
+The format of ERROR-OBJECT should be (ERROR-SYMBOL . DATA). The
+message is equivalent to the one that would be issued by
+`display-error' with the same argument.
+*/
+ (error_object))
+{
+ /* This function can GC */
+ Lisp_Object result = Qnil;
+ Lisp_Object stream = make_resizing_buffer_output_stream ();
+ struct gcpro gcpro1;
+ GCPRO1 (stream);
+
+ print_error_message (error_object, stream);
+ Lstream_flush (XLSTREAM (stream));
+ result = make_string (resizing_buffer_stream_ptr (XLSTREAM (stream)),
+ Lstream_byte_count (XLSTREAM (stream)));
+ Lstream_delete (XLSTREAM (stream));
+
+ UNGCPRO;
+ return result;
+}
+
+DEFUN ("display-error", Fdisplay_error, 2, 2, 0, /*
+Display ERROR-OBJECT on STREAM in a user-friendly way.
+*/
+ (error_object, stream))
+{
+ /* This function can GC */
+ print_error_message (error_object, canonicalize_printcharfun (stream));
+ return Qnil;
+}
+
+\f
+#ifdef LISP_FLOAT_TYPE
+
+Lisp_Object Vfloat_output_format;
+Lisp_Object Qfloat_output_format;
+
+/*
+ * This buffer should be at least as large as the max string size of the
+ * largest float, printed in the biggest notation. This is undoubtably
+ * 20d float_output_format, with the negative of the C-constant "HUGE"
+ * from <math.h>.
+ *
+ * On the vax the worst case is -1e38 in 20d format which takes 61 bytes.
+ *
+ * I assume that IEEE-754 format numbers can take 329 bytes for the worst
+ * case of -1e307 in 20d float_output_format. What is one to do (short of
+ * re-writing _doprnt to be more sane)?
+ * -wsr
+ */
+void
+float_to_string (char *buf, double data)
+{
+ Bufbyte *cp, c;
+ int width;
+
+ if (NILP (Vfloat_output_format)
+ || !STRINGP (Vfloat_output_format))
+ lose:
+ sprintf (buf, "%.16g", data);
+ else /* oink oink */
+ {
+ /* Check that the spec we have is fully valid.
+ This means not only valid for printf,
+ but meant for floats, and reasonable. */
+ cp = XSTRING_DATA (Vfloat_output_format);
+
+ if (cp[0] != '%')
+ goto lose;
+ if (cp[1] != '.')
+ goto lose;
+
+ cp += 2;
+ for (width = 0; (c = *cp, isdigit (c)); cp++)
+ {
+ width *= 10;
+ width += c - '0';
+ }
+
+ if (*cp != 'e' && *cp != 'f' && *cp != 'g' && *cp != 'E' && *cp != 'G')
+ goto lose;
+
+ if (width < (int) (*cp != 'e' && *cp != 'E') || width > DBL_DIG)
+ goto lose;
+
+ if (cp[1] != 0)
+ goto lose;
+
+ sprintf (buf, (char *) XSTRING_DATA (Vfloat_output_format),
+ data);
+ }
+
+ /* added by jwz: don't allow "1.0" to print as "1"; that destroys
+ the read-equivalence of lisp objects. (* x 1) and (* x 1.0) do
+ not do the same thing, so it's important that the printed
+ representation of that form not be corrupted by the printer.
+ */
+ {
+ Bufbyte *s = (Bufbyte *) buf; /* don't use signed chars here!
+ isdigit() can't hack them! */
+ if (*s == '-') s++;
+ for (; *s; s++)
+ /* if there's a non-digit, then there is a decimal point, or
+ it's in exponential notation, both of which are ok. */
+ if (!isdigit (*s))
+ goto DONE_LABEL;
+ /* otherwise, we need to hack it. */
+ *s++ = '.';
+ *s++ = '0';
+ *s = 0;
+ }
+ DONE_LABEL:
+
+ /* Some machines print "0.4" as ".4". I don't like that. */
+ if (buf [0] == '.' || (buf [0] == '-' && buf [1] == '.'))
+ {
+ int i;
+ for (i = strlen (buf) + 1; i >= 0; i--)
+ buf [i+1] = buf [i];
+ buf [(buf [0] == '-' ? 1 : 0)] = '0';
+ }
+}
+#endif /* LISP_FLOAT_TYPE */
+
+/* Print NUMBER to BUFFER. The digits are first written in reverse
+ order (the least significant digit first), and are then reversed.
+ This is equivalent to sprintf(buffer, "%ld", number), only much
+ faster.
+
+ BUFFER should accept 24 bytes. This should suffice for the longest
+ numbers on 64-bit machines. */
+void
+long_to_string (char *buffer, long number)
+{
+ char *p;
+ int i, len;
+
+ if (number < 0)
+ {
+ *buffer++ = '-';
+ number = -number;
+ }
+ p = buffer;
+
+ /* Print the digits to the string. */
+ do
+ {
+ *p++ = number % 10 + '0';
+ number /= 10;
+ }
+ while (number);
+
+ /* And reverse them. */
+ len = p - buffer - 1;
+ for (i = len / 2; i >= 0; i--)
+ {
+ char c = buffer[i];
+ buffer[i] = buffer[len - i];
+ buffer[len - i] = c;
+ }
+ buffer[len + 1] = '\0';
+}
+\f
+static void
+print_vector_internal (CONST char *start, CONST char *end,
+ Lisp_Object obj,
+ Lisp_Object printcharfun, int escapeflag)
+{
+ /* This function can GC */
+ int i;
+ int len = XVECTOR_LENGTH (obj);
+ int last = len;
+ struct gcpro gcpro1, gcpro2;
+ GCPRO2 (obj, printcharfun);
+
+ if (INTP (Vprint_length))
+ {
+ int max = XINT (Vprint_length);
+ if (max < len) last = max;
+ }
+
+ write_c_string (start, printcharfun);
+ for (i = 0; i < last; i++)
+ {
+ Lisp_Object elt = XVECTOR_DATA (obj)[i];
+ if (i != 0) write_char_internal (" ", printcharfun);
+ print_internal (elt, printcharfun, escapeflag);
+ }
+ UNGCPRO;
+ if (last != len)
+ write_c_string (" ...", printcharfun);
+ write_c_string (end, printcharfun);
+}
+
+void
+print_cons (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
+{
+ /* This function can GC */
+ struct gcpro gcpro1, gcpro2;
+
+ /* If print_readably is on, print (quote -foo-) as '-foo-
+ (Yeah, this should really be what print-pretty does, but we
+ don't have the rest of a pretty printer, and this actually
+ has non-negligible impact on size/speed of .elc files.)
+ */
+ if (print_readably &&
+ EQ (XCAR (obj), Qquote) &&
+ CONSP (XCDR (obj)) &&
+ NILP (XCDR (XCDR (obj))))
+ {
+ obj = XCAR (XCDR (obj));
+ GCPRO2 (obj, printcharfun);
+ write_char_internal ("\'", printcharfun);
+ UNGCPRO;
+ print_internal (obj, printcharfun, escapeflag);
+ return;
+ }
+
+ GCPRO2 (obj, printcharfun);
+ write_char_internal ("(", printcharfun);
+
+ {
+ int i = 0;
+ int max = 0;
+
+ if (INTP (Vprint_length))
+ max = XINT (Vprint_length);
+ while (CONSP (obj))
+ {
+ if (i++)
+ write_char_internal (" ", printcharfun);
+ if (max && i > max)
+ {
+ write_c_string ("...", printcharfun);
+ break;
+ }
+ print_internal (XCAR (obj), printcharfun,
+ escapeflag);
+ obj = XCDR (obj);
+ }
+ }
+ if (!LISTP (obj))
+ {
+ write_c_string (" . ", printcharfun);
+ print_internal (obj, printcharfun, escapeflag);
+ }
+ UNGCPRO;
+ write_char_internal (")", printcharfun);
+ return;
+}
+
+void
+print_vector (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
+{
+ print_vector_internal ("[", "]", obj, printcharfun, escapeflag);
+}
+
+void
+print_string (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
+{
+ struct Lisp_String *s = XSTRING (obj);
+ /* We distinguish between Bytecounts and Charcounts, to make
+ Vprint_string_length work correctly under Mule. */
+ Charcount size = string_char_length (s);
+ Charcount max = size;
+ Bytecount bcmax = string_length (s);
+ struct gcpro gcpro1, gcpro2;
+ GCPRO2 (obj, printcharfun);
+
+ if (INTP (Vprint_string_length) &&
+ XINT (Vprint_string_length) < max)
+ {
+ max = XINT (Vprint_string_length);
+ bcmax = charcount_to_bytecount (string_data (s), max);
+ }
+ if (max < 0)
+ {
+ max = 0;
+ bcmax = 0;
+ }
+
+ if (!escapeflag)
+ {
+ /* This deals with GC-relocation and Mule. */
+ output_string (printcharfun, 0, obj, 0, bcmax);
+ if (max < size)
+ write_c_string (" ...", printcharfun);
+ }
+ else
+ {
+ Bytecount i, last = 0;
+
+ write_char_internal ("\"", printcharfun);
+ for (i = 0; i < bcmax; i++)
+ {
+ Bufbyte ch = string_byte (s, i);
+ if (ch == '\"' || ch == '\\'
+ || (ch == '\n' && print_escape_newlines))
+ {
+ if (i > last)
+ {
+ output_string (printcharfun, 0, obj, last,
+ i - last);
+ }
+ if (ch == '\n')
+ {
+ write_c_string ("\\n", printcharfun);
+ }
+ else
+ {
+ write_char_internal ("\\", printcharfun);
+ /* This is correct for Mule because the
+ character is either \ or " */
+ write_char_internal (string_data (s) + i, printcharfun);
+ }
+ last = i + 1;
+ }
+ }
+ if (bcmax > last)
+ {
+ output_string (printcharfun, 0, obj, last,
+ bcmax - last);
+ }
+ if (max < size)
+ write_c_string (" ...", printcharfun);
+ write_char_internal ("\"", printcharfun);
+ }
+ UNGCPRO;
+}
+
+static void
+default_object_printer (Lisp_Object obj, Lisp_Object printcharfun,
+ int escapeflag)
+{
+ struct lcrecord_header *header =
+ (struct lcrecord_header *) XPNTR (obj);
+ char buf[200];
+
+ if (print_readably)
+ error ("printing unreadable object #<%s 0x%x>",
+ LHEADER_IMPLEMENTATION (&header->lheader)->name,
+ header->uid);
+
+ sprintf (buf, "#<%s 0x%x>",
+ LHEADER_IMPLEMENTATION (&header->lheader)->name,
+ header->uid);
+ write_c_string (buf, printcharfun);
+}
+
+void
+internal_object_printer (Lisp_Object obj, Lisp_Object printcharfun,
+ int escapeflag)
+{
+ char buf[200];
+ sprintf (buf, "#<INTERNAL OBJECT (XEmacs bug?) (%s) 0x%lx>",
+ XRECORD_LHEADER_IMPLEMENTATION (obj)->name,
+ (unsigned long) XPNTR (obj));
+ write_c_string (buf, printcharfun);
+}
+
+void
+print_internal (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
+{
+ /* This function can GC */
+
+ QUIT;
+
+ /* Emacs won't print whilst GCing, but an external debugger might */
+ if (gc_in_progress) return;
+
+#ifdef I18N3
+ /* #### Both input and output streams should have a flag associated
+ with them indicating whether output to that stream, or strings
+ read from the stream, get translated using Fgettext(). Such a
+ stream is called a "translating stream". For the minibuffer and
+ external-debugging-output this is always true on output, and
+ with-output-to-temp-buffer sets the flag to true for the buffer
+ it creates. This flag should also be user-settable. Perhaps it
+ should be split up into two flags, one for input and one for
+ output. */
+#endif
+
+ /* Detect circularities and truncate them.
+ No need to offer any alternative--this is better than an error. */
+ if (CONSP (obj) || VECTORP (obj) || COMPILED_FUNCTIONP (obj))
+ {
+ int i;
+ for (i = 0; i < print_depth; i++)
+ if (EQ (obj, being_printed[i]))
+ {
+ char buf[32];
+ *buf = '#';
+ long_to_string (buf + 1, i);
+ write_c_string (buf, printcharfun);
+ return;
+ }
+ }
+
+ being_printed[print_depth] = obj;
+ print_depth++;
+
+ if (print_depth > PRINT_CIRCLE)
+ error ("Apparently circular structure being printed");
+
+ switch (XTYPE (obj))
+ {
+#ifdef USE_MINIMAL_TAGBITS
+ case Lisp_Type_Int_Even:
+ case Lisp_Type_Int_Odd:
+#else
+ case Lisp_Type_Int:
+#endif
+ {
+ char buf[24];
+ long_to_string (buf, XINT (obj));
+ write_c_string (buf, printcharfun);
+ break;
+ }
+
+ case Lisp_Type_Char:
+ {
+ /* God intended that this be #\..., you know. */
+ char buf[16];
+ Emchar ch = XCHAR (obj);
+ char *p = buf;
+ *p++ = '?';
+ if (ch == '\n')
+ *p++ = '\\', *p++ = 'n';
+ else if (ch == '\r')
+ *p++ = '\\', *p++ = 'r';
+ else if (ch == '\t')
+ *p++ = '\\', *p++ = 't';
+ else if (ch < 32)
+ {
+ *p++ = '\\', *p++ = '^';
+ *p++ = ch + 64;
+ if ((ch + 64) == '\\')
+ *p++ = '\\';
+ }
+ else if (ch == 127)
+ *p++ = '\\', *p++ = '^', *p++ = '?';
+ else if (ch >= 128 && ch < 160)
+ {
+ *p++ = '\\', *p++ = '^';
+ p += set_charptr_emchar ((Bufbyte *)p, ch + 64);
+ }
+ else if (ch < 127
+ && !isdigit (ch)
+ && !isalpha (ch)
+ && ch != '^') /* must not backslash this or it will
+ be interpreted as the start of a
+ control char */
+ *p++ = '\\', *p++ = ch;
+ else
+ p += set_charptr_emchar ((Bufbyte *)p, ch);
+ output_string (printcharfun, (Bufbyte *)buf, Qnil, 0, p - buf);
+ break;
+ }
+
+#ifndef LRECORD_STRING
+ case Lisp_Type_String:
+ {
+ print_string (obj, printcharfun, escapeflag);
+ break;
+ }
+#endif /* ! LRECORD_STRING */
+
+#ifndef LRECORD_CONS
+ case Lisp_Type_Cons:
+ {
+ struct gcpro gcpro1, gcpro2;
+
+ /* If deeper than spec'd depth, print placeholder. */
+ if (INTP (Vprint_level)
+ && print_depth > XINT (Vprint_level))
+ {
+ GCPRO2 (obj, printcharfun);
+ write_c_string ("...", printcharfun);
+ UNGCPRO;
+ break;
+ }
+
+ print_cons (obj, printcharfun, escapeflag);
+ break;
+ }
+#endif /* ! LRECORD_CONS */
+
+#ifndef LRECORD_VECTOR
+ case Lisp_Type_Vector:
+ {
+ /* If deeper than spec'd depth, print placeholder. */
+ if (INTP (Vprint_level)
+ && print_depth > XINT (Vprint_level))
+ {
+ struct gcpro gcpro1, gcpro2;
+ GCPRO2 (obj, printcharfun);
+ write_c_string ("...", printcharfun);
+ UNGCPRO;
+ break;
+ }
+
+ /* God intended that this be #(...), you know. */
+ print_vector_internal ("[", "]", obj, printcharfun, escapeflag);
+ break;
+ }
+#endif /* !LRECORD_VECTOR */
+
+#ifndef LRECORD_SYMBOL
+ case Lisp_Type_Symbol:
+ {
+ print_symbol (obj, printcharfun, escapeflag);
+ break;
+ }
+#endif /* !LRECORD_SYMBOL */
+
+ case Lisp_Type_Record:
+ {
+ struct lrecord_header *lheader = XRECORD_LHEADER (obj);
+ struct gcpro gcpro1, gcpro2;
+
+#if defined(LRECORD_CONS) || defined(LRECORD_VECTOR)
+ if (CONSP (obj) || VECTORP(obj))
+ {
+ /* If deeper than spec'd depth, print placeholder. */
+ if (INTP (Vprint_level)
+ && print_depth > XINT (Vprint_level))
+ {
+ GCPRO2 (obj, printcharfun);
+ write_c_string ("...", printcharfun);
+ UNGCPRO;
+ break;
+ }
+ }
+#endif
+
+ GCPRO2 (obj, printcharfun);
+ if (LHEADER_IMPLEMENTATION (lheader)->printer)
+ ((LHEADER_IMPLEMENTATION (lheader)->printer)
+ (obj, printcharfun, escapeflag));
+ else
+ default_object_printer (obj, printcharfun, escapeflag);
+ UNGCPRO;
+ break;
+ }
+
+ default:
+ {
+#ifdef ERROR_CHECK_TYPECHECK
+ abort ();
+#else /* not ERROR_CHECK_TYPECHECK */
+ char buf[128];
+ /* We're in trouble if this happens! */
+ if (print_readably)
+ error ("printing illegal data type #o%03o",
+ (int) XTYPE (obj));
+ write_c_string ("#<EMACS BUG: ILLEGAL DATATYPE ",
+ printcharfun);
+ sprintf (buf, "(#o%3o)", (int) XTYPE (obj));
+ write_c_string (buf, printcharfun);
+ write_c_string
+ (" Save your buffers immediately and please report this bug>",
+ printcharfun);
+#endif /* not ERROR_CHECK_TYPECHECK */
+ break;
+ }
+ }
+
+ print_depth--;
+}
+
+static void
+print_compiled_function_internal (CONST char *start, CONST char *end,
+ Lisp_Object obj,
+ Lisp_Object printcharfun, int escapeflag)
+{
+ /* This function can GC */
+ struct Lisp_Compiled_Function *b =
+ XCOMPILED_FUNCTION (obj); /* GC doesn't relocate */
+ int docp = b->flags.documentationp;
+ int intp = b->flags.interactivep;
+ struct gcpro gcpro1, gcpro2;
+ char buf[100];
+ GCPRO2 (obj, printcharfun);
+
+ write_c_string (start, printcharfun);
+#ifdef COMPILED_FUNCTION_ANNOTATION_HACK
+ if (!print_readably)
+ {
+ Lisp_Object ann = compiled_function_annotation (b);
+ if (!NILP (ann))
+ {
+ write_c_string ("(from ", printcharfun);
+ print_internal (ann, printcharfun, 1);
+ write_c_string (") ", printcharfun);
+ }
+ }
+#endif /* COMPILED_FUNCTION_ANNOTATION_HACK */
+ /* COMPILED_ARGLIST = 0 */
+ print_internal (b->arglist, printcharfun, escapeflag);
+ /* COMPILED_BYTECODE = 1 */
+ write_char_internal (" ", printcharfun);
+ /* we don't really want to see that junk in the bytecode instructions. */
+ if (STRINGP (b->bytecodes) && !print_readably)
+ {
+ sprintf (buf, "\"...(%ld)\"", (long) XSTRING_LENGTH (b->bytecodes));
+ write_c_string (buf, printcharfun);
+ }
+ else
+ print_internal (b->bytecodes, printcharfun, escapeflag);
+ /* COMPILED_CONSTANTS = 2 */
+ write_char_internal (" ", printcharfun);
+ print_internal (b->constants, printcharfun, escapeflag);
+ /* COMPILED_STACK_DEPTH = 3 */
+ sprintf (buf, " %d", b->maxdepth);
+ write_c_string (buf, printcharfun);
+ /* COMPILED_DOC_STRING = 4 */
+ if (docp || intp)
+ {
+ write_char_internal (" ", printcharfun);
+ print_internal (compiled_function_documentation (b), printcharfun,
+ escapeflag);
+ }
+ /* COMPILED_INTERACTIVE = 5 */
+ if (intp)
+ {
+ write_char_internal (" ", printcharfun);
+ print_internal (compiled_function_interactive (b), printcharfun,
+ escapeflag);
+ }
+ UNGCPRO;
+ write_c_string (end, printcharfun);
+}
+
+void
+print_compiled_function (Lisp_Object obj, Lisp_Object printcharfun,
+ int escapeflag)
+{
+ /* This function can GC */
+ print_compiled_function_internal (((print_readably) ? "#[" :
+ "#<compiled-function "),
+ ((print_readably) ? "]" : ">"),
+ obj, printcharfun, escapeflag);
+}
+
+#ifdef LISP_FLOAT_TYPE
+void
+print_float (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
+{
+ char pigbuf[350]; /* see comments in float_to_string */
+
+ float_to_string (pigbuf, float_data (XFLOAT (obj)));
+ write_c_string (pigbuf, printcharfun);
+}
+#endif /* LISP_FLOAT_TYPE */
+
+void
+print_symbol (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
+{
+ /* This function can GC */
+ /* #### Bug!! (intern "") isn't printed in some distinguished way */
+ /* #### (the reader also loses on it) */
+ struct Lisp_String *name = symbol_name (XSYMBOL (obj));
+ Bytecount size = string_length (name);
+ struct gcpro gcpro1, gcpro2;
+
+ if (!escapeflag)
+ {
+ /* This deals with GC-relocation */
+ Lisp_Object nameobj;
+ XSETSTRING (nameobj, name);
+ output_string (printcharfun, 0, nameobj, 0, size);
+ return;
+ }
+ GCPRO2 (obj, printcharfun);
+
+ /* If we print an uninterned symbol as part of a complex object and
+ the flag print-gensym is non-nil, prefix it with #n= to read the
+ object back with the #n# reader syntax later if needed. */
+ if (!NILP (Vprint_gensym) && NILP (XSYMBOL (obj)->obarray))
+ {
+ if (print_depth > 1)
+ {
+ Lisp_Object tem = Fassq (obj, Vprint_gensym_alist);
+ if (CONSP (tem))
+ {
+ write_char_internal ("#", printcharfun);
+ print_internal (XCDR (tem), printcharfun, escapeflag);
+ write_char_internal ("#", printcharfun);
+ return;
+ }
+ else
+ {
+ if (CONSP (Vprint_gensym_alist))
+ {
+ /* Vprint_gensym_alist is exposed to Lisp, so we
+ have to be careful. */
+ CHECK_CONS (XCAR (Vprint_gensym_alist));
+ CHECK_INT (XCDR (XCAR (Vprint_gensym_alist)));
+ XSETINT (tem, XINT (XCDR (XCAR (Vprint_gensym_alist))) + 1);
+ }
+ else
+ XSETINT (tem, 1);
+ Vprint_gensym_alist = Fcons (Fcons (obj, tem), Vprint_gensym_alist);
+
+ write_char_internal ("#", printcharfun);
+ print_internal (tem, printcharfun, escapeflag);
+ write_char_internal ("=", printcharfun);
+ }
+ }
+ write_c_string ("#:", printcharfun);
+ }
+
+ /* Does it look like an integer or a float? */
+ {
+ Bufbyte *data = string_data (name);
+ Bytecount confusing = 0;
+
+ if (size == 0)
+ goto not_yet_confused; /* Really confusing */
+ else if (isdigit (data[0]))
+ confusing = 0;
+ else if (size == 1)
+ goto not_yet_confused;
+ else if (data[0] == '-' || data[0] == '+')
+ confusing = 1;
+ else
+ goto not_yet_confused;
+
+ for (; confusing < size; confusing++)
+ {
+ if (!isdigit (data[confusing]))
+ {
+ confusing = 0;
+ break;
+ }
+ }
+ not_yet_confused:
+
+#ifdef LISP_FLOAT_TYPE
+ if (!confusing)
+ /* #### Ugh, this is needlessly complex and slow for what we
+ need here. It might be a good idea to copy equivalent code
+ from FSF. --hniksic */
+ confusing = isfloat_string ((char *) data);
+#endif
+ if (confusing)
+ write_char_internal ("\\", printcharfun);
+ }
+
+ {
+ Lisp_Object nameobj;
+ Bytecount i;
+ Bytecount last = 0;
+
+ XSETSTRING (nameobj, name);
+ for (i = 0; i < size; i++)
+ {
+ Bufbyte c = string_byte (name, i);
+
+ if (c == '\"' || c == '\\' || c == '\'' || c == ';' || c == '#' ||
+ c == '(' || c == ')' || c == ',' || c =='.' || c == '`' ||
+ c == '[' || c == ']' || c == '?' || c <= 040)
+ {
+ if (i > last)
+ {
+ output_string (printcharfun, 0, nameobj, last,
+ i - last);
+ }
+ write_char_internal ("\\", printcharfun);
+ last = i;
+ }
+ }
+ output_string (printcharfun, 0, nameobj, last, size - last);
+ }
+ UNGCPRO;
+}
+\f
+/* #ifdef DEBUG_XEMACS */
+
+/* I don't like seeing `Note: Strange doc (not fboundp) for function
+ alternate-debugging-output @ 429542' -slb */
+/* #### Eek! Any clue how to get rid of it? In fact, how about
+ getting rid of this function altogether? Does anything actually
+ *use* it? --hniksic */
+
+int alternate_do_pointer;
+char alternate_do_string[5000];
+
+DEFUN ("alternate-debugging-output", Falternate_debugging_output, 1, 1, 0, /*
+Append CHARACTER to the array `alternate_do_string'.
+This can be used in place of `external-debugging-output' as a function
+to be passed to `print'. Before calling `print', set `alternate_do_pointer'
+to 0.
+*/
+ (character))
+{
+ Bufbyte str[MAX_EMCHAR_LEN];
+ Bytecount len;
+ int extlen;
+ CONST Extbyte *extptr;
+
+ CHECK_CHAR_COERCE_INT (character);
+ len = set_charptr_emchar (str, XCHAR (character));
+ GET_CHARPTR_EXT_DATA_ALLOCA (str, len, FORMAT_TERMINAL, extptr, extlen);
+ memcpy (alternate_do_string + alternate_do_pointer, extptr, extlen);
+ alternate_do_pointer += extlen;
+ alternate_do_string[alternate_do_pointer] = 0;
+ return character;
+}
+/* #endif / * DEBUG_XEMACS */
+
+DEFUN ("external-debugging-output", Fexternal_debugging_output, 1, 3, 0, /*
+Write CHAR-OR-STRING to stderr or stdout.
+If optional arg STDOUT-P is non-nil, write to stdout; otherwise, write
+to stderr. You can use this function to write directly to the terminal.
+This function can be used as the STREAM argument of Fprint() or the like.
+
+If you have opened a termscript file (using `open-termscript'), then
+the output also will be logged to this file.
+*/
+ (char_or_string, stdout_p, device))
+{
+ FILE *file = 0;
+ struct console *con = 0;
+
+ if (NILP (device))
+ {
+ if (!NILP (stdout_p))
+ file = stdout;
+ else
+ file = stderr;
+ }
+ else
+ {
+ CHECK_LIVE_DEVICE (device);
+ if (!DEVICE_TTY_P (XDEVICE (device)) &&
+ !DEVICE_STREAM_P (XDEVICE (device)))
+ signal_simple_error ("Must be tty or stream device", device);
+ con = XCONSOLE (DEVICE_CONSOLE (XDEVICE (device)));
+ if (DEVICE_TTY_P (XDEVICE (device)))
+ file = 0;
+ else if (!NILP (stdout_p))
+ file = CONSOLE_STREAM_DATA (con)->outfd;
+ else
+ file = CONSOLE_STREAM_DATA (con)->errfd;
+ }
+
+ if (STRINGP (char_or_string))
+ write_string_to_stdio_stream (file, con,
+ XSTRING_DATA (char_or_string),
+ 0, XSTRING_LENGTH (char_or_string),
+ FORMAT_TERMINAL);
+ else
+ {
+ Bufbyte str[MAX_EMCHAR_LEN];
+ Bytecount len;
+
+ CHECK_CHAR_COERCE_INT (char_or_string);
+ len = set_charptr_emchar (str, XCHAR (char_or_string));
+ write_string_to_stdio_stream (file, con, str, 0, len, FORMAT_TERMINAL);
+ }
+
+ return char_or_string;
+}
+
+DEFUN ("open-termscript", Fopen_termscript, 1, 1, "FOpen termscript file: ", /*
+Start writing all terminal output to FILE as well as the terminal.
+FILE = nil means just close any termscript file currently open.
+*/
+ (file))
+{
+ /* This function can GC */
+ if (termscript != 0)
+ fclose (termscript);
+ termscript = 0;
+
+ if (! NILP (file))
+ {
+ file = Fexpand_file_name (file, Qnil);
+ termscript = fopen ((char *) XSTRING_DATA (file), "w");
+ if (termscript == NULL)
+ report_file_error ("Opening termscript", list1 (file));
+ }
+ return Qnil;
+}
+
+#if 1
+/* Debugging kludge -- unbuffered */
+static int debug_print_length = 50;
+static int debug_print_level = 15;
+Lisp_Object debug_temp;
+
+static void
+debug_print_no_newline (Lisp_Object debug_print_obj)
+{
+ /* This function can GC */
+ int old_print_readably = print_readably;
+ int old_print_depth = print_depth;
+ Lisp_Object old_print_length = Vprint_length;
+ Lisp_Object old_print_level = Vprint_level;
+ Lisp_Object old_inhibit_quit = Vinhibit_quit;
+ struct gcpro gcpro1, gcpro2, gcpro3;
+ GCPRO3 (old_print_level, old_print_length, old_inhibit_quit);
+
+ if (gc_in_progress)
+ stderr_out ("** gc-in-progress! Bad idea to print anything! **\n");
+
+ print_depth = 0;
+ print_readably = 0;
+ print_unbuffered++;
+ /* Could use unwind-protect, but why bother? */
+ if (debug_print_length > 0)
+ Vprint_length = make_int (debug_print_length);
+ if (debug_print_level > 0)
+ Vprint_level = make_int (debug_print_level);
+ print_internal (debug_print_obj, Qexternal_debugging_output, 1);
+ Vinhibit_quit = old_inhibit_quit;
+ Vprint_level = old_print_level;
+ Vprint_length = old_print_length;
+ print_depth = old_print_depth;
+ print_readably = old_print_readably;
+ print_unbuffered--;
+ UNGCPRO;
+}
+
+void
+debug_print (Lisp_Object debug_print_obj)
+{
+ debug_print_no_newline (debug_print_obj);
+ stderr_out ("\n");
+ fflush (stderr);
+}
+
+/* Debugging kludge -- unbuffered */
+/* This function provided for the benefit of the debugger. */
+void debug_backtrace (void);
+void
+debug_backtrace (void)
+{
+ /* This function can GC */
+ int old_print_readably = print_readably;
+ int old_print_depth = print_depth;
+ Lisp_Object old_print_length = Vprint_length;
+ Lisp_Object old_print_level = Vprint_level;
+ Lisp_Object old_inhibit_quit = Vinhibit_quit;
+ struct gcpro gcpro1, gcpro2, gcpro3;
+ GCPRO3 (old_print_level, old_print_length, old_inhibit_quit);
+
+ if (gc_in_progress)
+ stderr_out ("** gc-in-progress! Bad idea to print anything! **\n");
+
+ print_depth = 0;
+ print_readably = 0;
+ print_unbuffered++;
+ /* Could use unwind-protect, but why bother? */
+ if (debug_print_length > 0)
+ Vprint_length = make_int (debug_print_length);
+ if (debug_print_level > 0)
+ Vprint_level = make_int (debug_print_level);
+ Fbacktrace (Qexternal_debugging_output, Qt);
+ stderr_out ("\n");
+ fflush (stderr);
+ Vinhibit_quit = old_inhibit_quit;
+ Vprint_level = old_print_level;
+ Vprint_length = old_print_length;
+ print_depth = old_print_depth;
+ print_readably = old_print_readably;
+ print_unbuffered--;
+ UNGCPRO;
+}
+
+void
+debug_short_backtrace (int length)
+{
+ int first = 1;
+ struct backtrace *bt = backtrace_list;
+ stderr_out (" [");
+ fflush (stderr);
+ while (length > 0 && bt)
+ {
+ if (!first)
+ {
+ stderr_out (", ");
+ fflush (stderr);
+ }
+ if (COMPILED_FUNCTIONP (*bt->function))
+ {
+#if defined(COMPILED_FUNCTION_ANNOTATION_HACK)
+ Lisp_Object ann = Fcompiled_function_annotation (*bt->function);
+#else
+ Lisp_Object ann = Qnil;
+#endif
+ if (!NILP (ann))
+ {
+ stderr_out ("<compiled-function from ");
+ fflush (stderr);
+ debug_print_no_newline (ann);
+ stderr_out (">");
+ fflush (stderr);
+ }
+ else
+ {
+ stderr_out ("<compiled-function of unknown origin>");
+ fflush (stderr);
+ }
+ }
+ else
+ debug_print_no_newline (*bt->function);
+ first = 0;
+ length--;
+ bt = bt->next;
+ }
+ stderr_out ("]\n");
+ fflush (stderr);
+}
+
+#endif /* debugging kludge */
+
+\f
+void
+syms_of_print (void)
+{
+ defsymbol (&Qprint_escape_newlines, "print-escape-newlines");
+ defsymbol (&Qprint_readably, "print-readably");
+
+ defsymbol (&Qstandard_output, "standard-output");
+
+#ifdef LISP_FLOAT_TYPE
+ defsymbol (&Qfloat_output_format, "float-output-format");
+#endif
+
+ defsymbol (&Qprint_length, "print-length");
+
+ defsymbol (&Qprint_string_length, "print-string-length");
+
+ defsymbol (&Qdisplay_error, "display-error");
+ defsymbol (&Qprint_message_label, "print-message-label");
+
+ DEFSUBR (Fprin1);
+ DEFSUBR (Fprin1_to_string);
+ DEFSUBR (Fprinc);
+ DEFSUBR (Fprint);
+ DEFSUBR (Ferror_message_string);
+ DEFSUBR (Fdisplay_error);
+ DEFSUBR (Fterpri);
+ DEFSUBR (Fwrite_char);
+ DEFSUBR (Falternate_debugging_output);
+ defsymbol (&Qalternate_debugging_output, "alternate-debugging-output");
+ DEFSUBR (Fexternal_debugging_output);
+ DEFSUBR (Fopen_termscript);
+ defsymbol (&Qexternal_debugging_output, "external-debugging-output");
+ DEFSUBR (Fwith_output_to_temp_buffer);
+}
+
+void
+vars_of_print (void)
+{
+ alternate_do_pointer = 0;
+
+ DEFVAR_LISP ("standard-output", &Vstandard_output /*
+Output stream `print' uses by default for outputting a character.
+This may be any function of one argument.
+It may also be a buffer (output is inserted before point)
+or a marker (output is inserted and the marker is advanced)
+or the symbol t (output appears in the minibuffer line).
+*/ );
+ Vstandard_output = Qt;
+
+#ifdef LISP_FLOAT_TYPE
+ DEFVAR_LISP ("float-output-format", &Vfloat_output_format /*
+The format descriptor string that lisp uses to print floats.
+This is a %-spec like those accepted by `printf' in C,
+but with some restrictions. It must start with the two characters `%.'.
+After that comes an integer precision specification,
+and then a letter which controls the format.
+The letters allowed are `e', `f' and `g'.
+Use `e' for exponential notation "DIG.DIGITSeEXPT"
+Use `f' for decimal point notation "DIGITS.DIGITS".
+Use `g' to choose the shorter of those two formats for the number at hand.
+The precision in any of these cases is the number of digits following
+the decimal point. With `f', a precision of 0 means to omit the
+decimal point. 0 is not allowed with `f' or `g'.
+
+A value of nil means to use `%.16g'.
+
+Regardless of the value of `float-output-format', a floating point number
+will never be printed in such a way that it is ambiguous with an integer;
+that is, a floating-point number will always be printed with a decimal
+point and/or an exponent, even if the digits following the decimal point
+are all zero. This is to preserve read-equivalence.
+*/ );
+ Vfloat_output_format = Qnil;
+#endif /* LISP_FLOAT_TYPE */
+
+ DEFVAR_LISP ("print-length", &Vprint_length /*
+Maximum length of list or vector to print before abbreviating.
+A value of nil means no limit.
+*/ );
+ Vprint_length = Qnil;
+
+ DEFVAR_LISP ("print-string-length", &Vprint_string_length /*
+Maximum length of string to print before abbreviating.
+A value of nil means no limit.
+*/ );
+ Vprint_string_length = Qnil;
+
+ DEFVAR_LISP ("print-level", &Vprint_level /*
+Maximum depth of list nesting to print before abbreviating.
+A value of nil means no limit.
+*/ );
+ Vprint_level = Qnil;
+
+ DEFVAR_BOOL ("print-escape-newlines", &print_escape_newlines /*
+Non-nil means print newlines in strings as backslash-n.
+*/ );
+ print_escape_newlines = 0;
+
+ DEFVAR_BOOL ("print-readably", &print_readably /*
+If non-nil, then all objects will be printed in a readable form.
+If an object has no readable representation, then an error is signalled.
+When print-readably is true, compiled-function objects will be written in
+ #[...] form instead of in #<compiled-function [...]> form, and two-element
+ lists of the form (quote object) will be written as the equivalent 'object.
+Do not SET this variable; bind it instead.
+*/ );
+ print_readably = 0;
+
+ /* #### I think this should default to t. But we'd better wait
+ until we see that it works out. */
+ DEFVAR_LISP ("print-gensym", &Vprint_gensym /*
+If non-nil, then uninterned symbols will be printed specially.
+Uninterned symbols are those which are not present in `obarray', that is,
+those which were made with `make-symbol' or by calling `intern' with a
+second argument.
+
+When print-gensym is true, such symbols will be preceded by "#:",
+which causes the reader to create a new symbol instead of interning
+and returning an existing one. Beware: the #: syntax creates a new
+symbol each time it is seen, so if you print an object which contains
+two pointers to the same uninterned symbol, `read' will not duplicate
+that structure.
+
+If the value of `print-gensym' is a cons cell, then in addition
+refrain from clearing `print-gensym-alist' on entry to and exit from
+printing functions, so that the use of #...# and #...= can carry over
+for several separately printed objects.
+*/ );
+ Vprint_gensym = Qnil;
+
+ DEFVAR_LISP ("print-gensym-alist", &Vprint_gensym_alist /*
+Association list of elements (GENSYM . N) to guide use of #N# and #N=.
+In each element, GENSYM is an uninterned symbol that has been associated
+with #N= for the specified value of N.
+*/ );
+ Vprint_gensym_alist = Qnil;
+
+ DEFVAR_LISP ("print-message-label", &Vprint_message_label /*
+Label for minibuffer messages created with `print'. This should
+generally be bound with `let' rather than set. (See `display-message'.)
+*/ );
+ Vprint_message_label = Qprint;
+}
projects / chise / xemacs-chise.git.1 / blobdiff