/* Lisp object printing and output streams.
- Copyright (C) 1985, 86, 88, 93, 94, 95 Free Software Foundation, Inc.
+ Copyright (C) 1985, 86, 88, 93, 94, 95, 97, 1998
+ Free Software Foundation, Inc.
This file is part of GNU Emacs.
#ifndef standalone
#include "buffer.h"
+#include "charset.h"
#include "frame.h"
#include "window.h"
#include "process.h"
Lisp_Object Vstandard_output, Qstandard_output;
+/* These are used to print like we read. */
+extern Lisp_Object Qbackquote, Qcomma, Qcomma_at, Qcomma_dot, Qfunction;
+
#ifdef LISP_FLOAT_TYPE
Lisp_Object Vfloat_output_format, Qfloat_output_format;
+
+/* Work around a problem that happens because math.h on hpux 7
+ defines two static variables--which, in Emacs, are not really static,
+ because `static' is defined as nothing. The problem is that they are
+ defined both here and in lread.c.
+ These macros prevent the name conflict. */
+#if defined (HPUX) && !defined (HPUX8)
+#define _MAXLDBL print_maxldbl
+#define _NMAXLDBL print_nmaxldbl
+#endif
+
+#include <math.h>
+
+#if STDC_HEADERS
+#include <float.h>
+#include <stdlib.h>
+#endif
+
+/* Default to values appropriate for IEEE floating point. */
+#ifndef FLT_RADIX
+#define FLT_RADIX 2
+#endif
+#ifndef DBL_MANT_DIG
+#define DBL_MANT_DIG 53
+#endif
+#ifndef DBL_DIG
+#define DBL_DIG 15
+#endif
+#ifndef DBL_MIN
+#define DBL_MIN 2.2250738585072014e-308
+#endif
+
+#ifdef DBL_MIN_REPLACEMENT
+#undef DBL_MIN
+#define DBL_MIN DBL_MIN_REPLACEMENT
+#endif
+
+/* Define DOUBLE_DIGITS_BOUND, an upper bound on the number of decimal digits
+ needed to express a float without losing information.
+ The general-case formula is valid for the usual case, IEEE floating point,
+ but many compilers can't optimize the formula to an integer constant,
+ so make a special case for it. */
+#if FLT_RADIX == 2 && DBL_MANT_DIG == 53
+#define DOUBLE_DIGITS_BOUND 17 /* IEEE floating point */
+#else
+#define DOUBLE_DIGITS_BOUND ((int) ceil (log10 (pow (FLT_RADIX, DBL_MANT_DIG))))
+#endif
+
#endif /* LISP_FLOAT_TYPE */
/* Avoid actual stack overflow in print. */
#define PRINT_CIRCLE 200
Lisp_Object being_printed[PRINT_CIRCLE];
+/* When printing into a buffer, first we put the text in this
+ block, then insert it all at once. */
+char *print_buffer;
+
+/* Size allocated in print_buffer. */
+int print_buffer_size;
+/* Chars stored in print_buffer. */
+int print_buffer_pos;
+/* Bytes stored in print_buffer. */
+int print_buffer_pos_byte;
+
/* Maximum length of list to print in full; noninteger means
effectively infinity */
Lisp_Object Qprint_escape_newlines;
+/* Nonzero means print (quote foo) forms as 'foo, etc. */
+
+int print_quoted;
+
+/* 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;
+
+/* Association list of certain objects that are `eq' in the form being
+ printed and which should be `eq' when read back in, using the #n=object
+ and #n# reader forms. Each element has the form (object . n). */
+
+Lisp_Object Vprint_gensym_alist;
+
/* Nonzero means print newline to stdout before next minibuffer message.
Defined in xdisp.c */
extern int noninteractive_need_newline;
+extern int minibuffer_auto_raise;
+
#ifdef MAX_PRINT_CHARS
static int print_chars;
static int max_print;
/* Low level output routines for characters and strings */
/* Lisp functions to do output using a stream
- must have the stream in a variable called printcharfun
- and must start with PRINTPREPARE and end with PRINTFINISH.
- Use PRINTCHAR to output one character,
- or call strout to output a block of characters.
- Also, each one must have the declarations
- struct buffer *old = current_buffer;
- int old_point = -1, start_point;
- Lisp_Object original;
+ must have the stream in a variable called printcharfun
+ and must start with PRINTPREPARE, end with PRINTFINISH,
+ and use PRINTDECLARE to declare common variables.
+ Use PRINTCHAR to output one character,
+ or call strout to output a block of characters.
*/
+#define PRINTDECLARE \
+ struct buffer *old = current_buffer; \
+ int old_point = -1, start_point; \
+ int old_point_byte, start_point_byte; \
+ int specpdl_count = specpdl_ptr - specpdl; \
+ int free_print_buffer = 0; \
+ Lisp_Object original
+
#define PRINTPREPARE \
original = printcharfun; \
if (NILP (printcharfun)) printcharfun = Qt; \
if (BUFFERP (printcharfun)) \
- { if (XBUFFER (printcharfun) != current_buffer) \
+ { \
+ if (XBUFFER (printcharfun) != current_buffer) \
Fset_buffer (printcharfun); \
- printcharfun = Qnil;} \
+ printcharfun = Qnil; \
+ } \
if (MARKERP (printcharfun)) \
- { if (!(XMARKER (original)->buffer)) \
+ { \
+ if (!(XMARKER (original)->buffer)) \
error ("Marker does not point anywhere"); \
if (XMARKER (original)->buffer != current_buffer) \
set_buffer_internal (XMARKER (original)->buffer); \
- old_point = point; \
- SET_PT (marker_position (printcharfun)); \
- start_point = point; \
- printcharfun = Qnil;}
+ old_point = PT; \
+ old_point_byte = PT_BYTE; \
+ SET_PT_BOTH (marker_position (printcharfun), \
+ marker_byte_position (printcharfun)); \
+ start_point = PT; \
+ start_point_byte = PT_BYTE; \
+ printcharfun = Qnil; \
+ } \
+ if (NILP (printcharfun)) \
+ { \
+ Lisp_Object string; \
+ if (print_buffer != 0) \
+ { \
+ string = make_string_from_bytes (print_buffer, \
+ print_buffer_pos, \
+ print_buffer_pos_byte); \
+ record_unwind_protect (print_unwind, string); \
+ } \
+ else \
+ { \
+ print_buffer_size = 1000; \
+ print_buffer = (char *) xmalloc (print_buffer_size); \
+ free_print_buffer = 1; \
+ } \
+ print_buffer_pos = 0; \
+ print_buffer_pos_byte = 0; \
+ } \
+ if (!CONSP (Vprint_gensym)) \
+ Vprint_gensym_alist = Qnil
#define PRINTFINISH \
+ if (NILP (printcharfun)) \
+ insert_1_both (print_buffer, print_buffer_pos, \
+ print_buffer_pos_byte, 0, 1, 0); \
+ if (free_print_buffer) \
+ { \
+ xfree (print_buffer); \
+ print_buffer = 0; \
+ } \
+ unbind_to (specpdl_count, Qnil); \
if (MARKERP (original)) \
- Fset_marker (original, make_number (point), Qnil); \
+ set_marker_both (original, Qnil, PT, PT_BYTE); \
if (old_point >= 0) \
- SET_PT (old_point + (old_point >= start_point \
- ? point - start_point : 0)); \
+ SET_PT_BOTH (old_point + (old_point >= start_point \
+ ? PT - start_point : 0), \
+ old_point_byte + (old_point_byte >= start_point_byte \
+ ? PT_BYTE - start_point_byte : 0)); \
if (old != current_buffer) \
- set_buffer_internal (old)
+ set_buffer_internal (old); \
+ if (!CONSP (Vprint_gensym)) \
+ Vprint_gensym_alist = Qnil
#define PRINTCHAR(ch) printchar (ch, printcharfun)
-/* Index of first unused element of FRAME_MESSAGE_BUF(mini_frame). */
+/* Nonzero if there is no room to print any more characters
+ so print might as well return right away. */
+
+#define PRINTFULLP() \
+ (EQ (printcharfun, Qt) && !noninteractive \
+ && printbufidx >= FRAME_WIDTH (XFRAME (WINDOW_FRAME (XWINDOW (minibuf_window)))))
+
+/* This is used to restore the saved contents of print_buffer
+ when there is a recursive call to print. */
+static Lisp_Object
+print_unwind (saved_text)
+ Lisp_Object saved_text;
+{
+ bcopy (XSTRING (saved_text)->data, print_buffer, XSTRING (saved_text)->size);
+}
+
+/* Index of first unused element of FRAME_MESSAGE_BUF (mini_frame). */
static int printbufidx;
static void
printchar (ch, fun)
- unsigned char ch;
+ unsigned int ch;
Lisp_Object fun;
{
Lisp_Object ch1;
#ifndef standalone
if (EQ (fun, Qnil))
{
+ int len;
+ unsigned char work[4], *str;
+
QUIT;
- insert (&ch, 1);
+ len = CHAR_STRING (ch, work, str);
+ if (print_buffer_pos_byte + len >= print_buffer_size)
+ print_buffer = (char *) xrealloc (print_buffer,
+ print_buffer_size *= 2);
+ bcopy (str, print_buffer + print_buffer_pos_byte, len);
+ print_buffer_pos += 1;
+ print_buffer_pos_byte += len;
return;
}
{
FRAME_PTR mini_frame
= XFRAME (WINDOW_FRAME (XWINDOW (minibuf_window)));
+ unsigned char work[4], *str;
+ int len = CHAR_STRING (ch, work, str);
+
+ QUIT;
if (noninteractive)
{
- putchar (ch);
+ while (len--)
+ putchar (*str), str++;
noninteractive_need_newline = 1;
return;
}
printbufidx = 0;
echo_area_glyphs_length = 0;
message_buf_print = 1;
+
+ if (minibuffer_auto_raise)
+ {
+ Lisp_Object mini_window;
+
+ /* Get the frame containing the minibuffer
+ that the selected frame is using. */
+ mini_window = FRAME_MINIBUF_WINDOW (selected_frame);
+
+ Fraise_frame (WINDOW_FRAME (XWINDOW (mini_window)));
+ }
}
- message_dolog (&ch, 1, 0);
- if (printbufidx < FRAME_WIDTH (mini_frame) - 1)
- FRAME_MESSAGE_BUF (mini_frame)[printbufidx++] = ch;
+ message_dolog (str, len, 0, len > 1);
+
+ /* Convert message to multibyte if we are now adding multibyte text. */
+ if (! NILP (current_buffer->enable_multibyte_characters)
+ && ! message_enable_multibyte
+ && printbufidx > 0)
+ {
+ int size = count_size_as_multibyte (FRAME_MESSAGE_BUF (mini_frame),
+ printbufidx);
+ unsigned char *tembuf = (unsigned char *) alloca (size + 1);
+ copy_text (FRAME_MESSAGE_BUF (mini_frame), tembuf, printbufidx,
+ 0, 1);
+ printbufidx = size;
+ if (printbufidx > FRAME_MESSAGE_BUF_SIZE (mini_frame))
+ {
+ printbufidx = FRAME_MESSAGE_BUF_SIZE (mini_frame);
+ /* Rewind incomplete multi-byte form. */
+ while (printbufidx > 0 && tembuf[printbufidx] >= 0xA0)
+ printbufidx--;
+ }
+ bcopy (tembuf, FRAME_MESSAGE_BUF (mini_frame), printbufidx);
+ message_enable_multibyte = 1;
+ }
+
+ if (printbufidx < FRAME_MESSAGE_BUF_SIZE (mini_frame) - len)
+ bcopy (str, &FRAME_MESSAGE_BUF (mini_frame)[printbufidx], len),
+ printbufidx += len;
FRAME_MESSAGE_BUF (mini_frame)[printbufidx] = 0;
echo_area_glyphs_length = printbufidx;
}
static void
-strout (ptr, size, printcharfun)
+strout (ptr, size, size_byte, printcharfun, multibyte)
char *ptr;
- int size;
+ int size, size_byte;
Lisp_Object printcharfun;
+ int multibyte;
{
int i = 0;
+ if (size < 0)
+ size_byte = size = strlen (ptr);
+
if (EQ (printcharfun, Qnil))
{
- insert (ptr, size >= 0 ? size : strlen (ptr));
+ if (print_buffer_pos_byte + size_byte > print_buffer_size)
+ {
+ print_buffer_size = print_buffer_size * 2 + size_byte;
+ print_buffer = (char *) xrealloc (print_buffer,
+ print_buffer_size);
+ }
+ bcopy (ptr, print_buffer + print_buffer_pos_byte, size_byte);
+ print_buffer_pos += size;
+ print_buffer_pos_byte += size_byte;
+
#ifdef MAX_PRINT_CHARS
if (max_print)
- print_chars += size >= 0 ? size : strlen(ptr);
+ print_chars += size;
#endif /* MAX_PRINT_CHARS */
return;
}
FRAME_PTR mini_frame
= XFRAME (WINDOW_FRAME (XWINDOW (minibuf_window)));
- i = size >= 0 ? size : strlen (ptr);
+ QUIT;
+
#ifdef MAX_PRINT_CHARS
if (max_print)
- print_chars += i;
+ print_chars += size;
#endif /* MAX_PRINT_CHARS */
if (noninteractive)
{
- fwrite (ptr, 1, i, stdout);
+ fwrite (ptr, 1, size_byte, stdout);
noninteractive_need_newline = 1;
return;
}
printbufidx = 0;
echo_area_glyphs_length = 0;
message_buf_print = 1;
+
+ if (minibuffer_auto_raise)
+ {
+ Lisp_Object mini_window;
+
+ /* Get the frame containing the minibuffer
+ that the selected frame is using. */
+ mini_window = FRAME_MINIBUF_WINDOW (selected_frame);
+
+ Fraise_frame (WINDOW_FRAME (XWINDOW (mini_window)));
+ }
}
- message_dolog (ptr, i, 0);
- if (i > FRAME_WIDTH (mini_frame) - printbufidx - 1)
- i = FRAME_WIDTH (mini_frame) - printbufidx - 1;
- bcopy (ptr, &FRAME_MESSAGE_BUF (mini_frame) [printbufidx], i);
- printbufidx += i;
- echo_area_glyphs_length = printbufidx;
+ message_dolog (ptr, size_byte, 0, multibyte);
+
+ /* Convert message to multibyte if we are now adding multibyte text. */
+ if (multibyte
+ && ! message_enable_multibyte
+ && printbufidx > 0)
+ {
+ int size = count_size_as_multibyte (FRAME_MESSAGE_BUF (mini_frame),
+ printbufidx);
+ unsigned char *tembuf = (unsigned char *) alloca (size + 1);
+ copy_text (FRAME_MESSAGE_BUF (mini_frame), tembuf, printbufidx,
+ 0, 1);
+ printbufidx = size;
+ if (printbufidx > FRAME_MESSAGE_BUF_SIZE (mini_frame))
+ {
+ printbufidx = FRAME_MESSAGE_BUF_SIZE (mini_frame);
+ /* Rewind incomplete multi-byte form. */
+ while (printbufidx > 0 && tembuf[printbufidx] >= 0xA0)
+ printbufidx--;
+ }
+
+ bcopy (tembuf, FRAME_MESSAGE_BUF (mini_frame), printbufidx);
+ message_enable_multibyte = 1;
+ }
+
+ /* Compute how much of the new text will fit there. */
+ if (size_byte > FRAME_MESSAGE_BUF_SIZE (mini_frame) - printbufidx - 1)
+ {
+ size_byte = FRAME_MESSAGE_BUF_SIZE (mini_frame) - printbufidx - 1;
+ /* Rewind incomplete multi-byte form. */
+ while (size_byte && (unsigned char) ptr[size_byte] >= 0xA0)
+ size_byte--;
+ }
+
+ /* Put that part of the new text in. */
+ bcopy (ptr, &FRAME_MESSAGE_BUF (mini_frame) [printbufidx], size_byte);
+ printbufidx += size_byte;
FRAME_MESSAGE_BUF (mini_frame) [printbufidx] = 0;
+ echo_area_glyphs_length = printbufidx;
return;
}
- if (size >= 0)
- while (i < size)
- PRINTCHAR (ptr[i++]);
+ i = 0;
+ if (size == size_byte)
+ while (i < size_byte)
+ {
+ int ch = ptr[i++];
+
+ PRINTCHAR (ch);
+ }
else
- while (ptr[i])
- PRINTCHAR (ptr[i++]);
+ while (i < size_byte)
+ {
+ /* Here, we must convert each multi-byte form to the
+ corresponding character code before handing it to PRINTCHAR. */
+ int len;
+ int ch = STRING_CHAR_AND_LENGTH (ptr + i, size_byte - i, len);
+
+ PRINTCHAR (ch);
+ i += len;
+ }
}
/* Print the contents of a string STRING using PRINTCHARFUN.
It isn't safe to use strout in many cases,
because printing one char can relocate. */
+static void
print_string (string, printcharfun)
Lisp_Object string;
Lisp_Object printcharfun;
{
- if (EQ (printcharfun, Qt))
- /* strout is safe for output to a frame (echo area). */
- strout (XSTRING (string)->data, XSTRING (string)->size, printcharfun);
- else if (EQ (printcharfun, Qnil))
- {
-#ifdef MAX_PRINT_CHARS
- if (max_print)
- print_chars += XSTRING (string)->size;
-#endif /* MAX_PRINT_CHARS */
- insert_from_string (string, 0, XSTRING (string)->size, 1);
- }
+ if (EQ (printcharfun, Qt) || NILP (printcharfun))
+ /* strout is safe for output to a frame (echo area) or to print_buffer. */
+ strout (XSTRING (string)->data,
+ XSTRING (string)->size,
+ STRING_BYTES (XSTRING (string)),
+ printcharfun, STRING_MULTIBYTE (string));
else
{
- /* Otherwise, fetch the string address for each character. */
+ /* Otherwise, string may be relocated by printing one char.
+ So re-fetch the string address for each character. */
int i;
int size = XSTRING (string)->size;
+ int size_byte = STRING_BYTES (XSTRING (string));
struct gcpro gcpro1;
GCPRO1 (string);
- for (i = 0; i < size; i++)
- PRINTCHAR (XSTRING (string)->data[i]);
+ if (size == size_byte)
+ for (i = 0; i < size; i++)
+ PRINTCHAR (XSTRING (string)->data[i]);
+ else
+ for (i = 0; i < size_byte; i++)
+ {
+ /* Here, we must convert each multi-byte form to the
+ corresponding character code before handing it to PRINTCHAR. */
+ int len;
+ int ch = STRING_CHAR_AND_LENGTH (XSTRING (string)->data + i,
+ size_byte - i, len);
+
+ PRINTCHAR (ch);
+ i += len;
+ }
UNGCPRO;
}
}
(character, printcharfun)
Lisp_Object character, printcharfun;
{
- struct buffer *old = current_buffer;
- int old_point = -1;
- int start_point;
- Lisp_Object original;
+ PRINTDECLARE;
if (NILP (printcharfun))
printcharfun = Vstandard_output;
return character;
}
-/* Used from outside of print.c to print a block of SIZE chars at DATA
- on the default output stream.
+/* Used from outside of print.c to print a block of SIZE
+ single-byte chars at DATA on the default output stream.
Do not use this on the contents of a Lisp string. */
+void
write_string (data, size)
char *data;
int size;
{
- struct buffer *old = current_buffer;
+ PRINTDECLARE;
Lisp_Object printcharfun;
- int old_point = -1;
- int start_point;
- Lisp_Object original;
printcharfun = Vstandard_output;
PRINTPREPARE;
- strout (data, size, printcharfun);
+ strout (data, size, size, printcharfun, 0);
PRINTFINISH;
}
-/* Used from outside of print.c to print a block of SIZE chars at DATA
- on a specified stream PRINTCHARFUN.
+/* Used from outside of print.c to print a block of SIZE
+ single-byte chars at DATA on a specified stream PRINTCHARFUN.
Do not use this on the contents of a Lisp string. */
+void
write_string_1 (data, size, printcharfun)
char *data;
int size;
Lisp_Object printcharfun;
{
- struct buffer *old = current_buffer;
- int old_point = -1;
- int start_point;
- Lisp_Object original;
+ PRINTDECLARE;
PRINTPREPARE;
- strout (data, size, printcharfun);
+ strout (data, size, size, printcharfun, 0);
PRINTFINISH;
}
current_buffer->directory = old->directory;
current_buffer->read_only = Qnil;
+ current_buffer->filename = Qnil;
+ current_buffer->undo_list = Qt;
+ current_buffer->overlays_before = Qnil;
+ current_buffer->overlays_after = Qnil;
+ current_buffer->enable_multibyte_characters
+ = buffer_defaults.enable_multibyte_characters;
Ferase_buffer ();
XSETBUFFER (buf, current_buffer);
Lisp_Object
internal_with_output_to_temp_buffer (bufname, function, args)
char *bufname;
- Lisp_Object (*function) ();
+ Lisp_Object (*function) P_ ((Lisp_Object));
Lisp_Object args;
{
int count = specpdl_ptr - specpdl;
(printcharfun)
Lisp_Object printcharfun;
{
- struct buffer *old = current_buffer;
- int old_point = -1;
- int start_point;
- Lisp_Object original;
+ PRINTDECLARE;
if (NILP (printcharfun))
printcharfun = Vstandard_output;
(object, printcharfun)
Lisp_Object object, printcharfun;
{
- struct buffer *old = current_buffer;
- int old_point = -1;
- int start_point;
- Lisp_Object original;
+ PRINTDECLARE;
#ifdef MAX_PRINT_CHARS
max_print = 0;
(object, noescape)
Lisp_Object object, noescape;
{
- struct buffer *old = current_buffer;
- int old_point = -1;
- int start_point;
- Lisp_Object original, printcharfun;
+ PRINTDECLARE;
+ Lisp_Object printcharfun;
struct gcpro gcpro1, gcpro2;
Lisp_Object tem;
(object, printcharfun)
Lisp_Object object, printcharfun;
{
- struct buffer *old = current_buffer;
- int old_point = -1;
- int start_point;
- Lisp_Object original;
+ PRINTDECLARE;
if (NILP (printcharfun))
printcharfun = Vstandard_output;
(object, printcharfun)
Lisp_Object object, printcharfun;
{
- struct buffer *old = current_buffer;
- int old_point = -1;
- int start_point;
- Lisp_Object original;
+ PRINTDECLARE;
struct gcpro gcpro1;
#ifdef MAX_PRINT_CHARS
{
CHECK_NUMBER (character, 0);
putc (XINT (character), stderr);
-
+
+#ifdef WINDOWSNT
+ /* Send the output to a debugger (nothing happens if there isn't one). */
+ {
+ char buf[2] = {(char) XINT (character), '\0'};
+ OutputDebugString (buf);
+ }
+#endif
+
return character;
}
Lisp_Object original, printcharfun, value;
struct gcpro gcpro1;
- print_error_message (obj, Vprin1_to_string_buffer, NULL);
+ /* If OBJ is (error STRING), just return STRING.
+ That is not only faster, it also avoids the need to allocate
+ space here when the error is due to memory full. */
+ if (CONSP (obj) && EQ (XCONS (obj)->car, Qerror)
+ && CONSP (XCONS (obj)->cdr)
+ && STRINGP (XCONS (XCONS (obj)->cdr)->car)
+ && NILP (XCONS (XCONS (obj)->cdr)->cdr))
+ return XCONS (XCONS (obj)->cdr)->car;
+
+ print_error_message (obj, Vprin1_to_string_buffer);
set_buffer_internal (XBUFFER (Vprin1_to_string_buffer));
value = Fbuffer_string ();
/* Print an error message for the error DATA
onto Lisp output stream STREAM (suitable for the print functions). */
+void
print_error_message (data, stream)
Lisp_Object data, stream;
{
unsigned char *cp;
int width;
+ /* Check for plus infinity in a way that won't lose
+ if there is no plus infinity. */
+ if (data == data / 2 && data > 1.0)
+ {
+ strcpy (buf, "1.0e+INF");
+ return;
+ }
+ /* Likewise for minus infinity. */
+ if (data == data / 2 && data < -1.0)
+ {
+ strcpy (buf, "-1.0e+INF");
+ return;
+ }
+ /* Check for NaN in a way that won't fail if there are no NaNs. */
+ if (! (data * 0.0 >= 0.0))
+ {
+ strcpy (buf, "0.0e+NaN");
+ return;
+ }
+
if (NILP (Vfloat_output_format)
|| !STRINGP (Vfloat_output_format))
lose:
{
- sprintf (buf, "%.17g", data);
- width = -1;
+ /* Generate the fewest number of digits that represent the
+ floating point value without losing information.
+ The following method is simple but a bit slow.
+ For ideas about speeding things up, please see:
+
+ Guy L Steele Jr & Jon L White, How to print floating-point numbers
+ accurately. SIGPLAN notices 25, 6 (June 1990), 112-126.
+
+ Robert G Burger & R Kent Dybvig, Printing floating point numbers
+ quickly and accurately, SIGPLAN notices 31, 5 (May 1996), 108-116. */
+
+ width = fabs (data) < DBL_MIN ? 1 : DBL_DIG;
+ do
+ sprintf (buf, "%.*g", width, data);
+ while (width++ < DOUBLE_DIGITS_BOUND && atof (buf) != data);
}
else /* oink oink */
{
if (EQ (obj, being_printed[i]))
{
sprintf (buf, "#%d", i);
- strout (buf, -1, printcharfun);
+ strout (buf, -1, -1, printcharfun, 0);
return;
}
}
sprintf (buf, "%ld", XINT (obj));
else
abort ();
- strout (buf, -1, printcharfun);
+ strout (buf, -1, -1, printcharfun, 0);
break;
#ifdef LISP_FLOAT_TYPE
char pigbuf[350]; /* see comments in float_to_string */
float_to_string (pigbuf, XFLOAT(obj)->data);
- strout (pigbuf, -1, printcharfun);
+ strout (pigbuf, -1, -1, printcharfun, 0);
}
break;
#endif
print_string (obj, printcharfun);
else
{
- register int i;
+ register int i, i_byte;
register unsigned char c;
struct gcpro gcpro1;
+ int size_byte;
+ /* 1 means we must ensure that the next character we output
+ cannot be taken as part of a hex character escape. */
+ int need_nonhex = 0;
GCPRO1 (obj);
#endif
PRINTCHAR ('\"');
- for (i = 0; i < XSTRING (obj)->size; i++)
+ size_byte = STRING_BYTES (XSTRING (obj));
+
+ for (i = 0, i_byte = 0; i_byte < size_byte;)
{
+ /* Here, we must convert each multi-byte form to the
+ corresponding character code before handing it to PRINTCHAR. */
+ int len;
+ int c;
+
+ if (STRING_MULTIBYTE (obj))
+ FETCH_STRING_CHAR_ADVANCE (c, obj, i, i_byte);
+ else
+ c = XSTRING (obj)->data[i_byte++];
+
QUIT;
- c = XSTRING (obj)->data[i];
+
if (c == '\n' && print_escape_newlines)
{
PRINTCHAR ('\\');
PRINTCHAR ('\\');
PRINTCHAR ('f');
}
+ else if ((! SINGLE_BYTE_CHAR_P (c)
+ && NILP (current_buffer->enable_multibyte_characters)))
+ {
+ /* When multibyte is disabled,
+ print multibyte string chars using hex escapes. */
+ unsigned char outbuf[50];
+ sprintf (outbuf, "\\x%x", c);
+ strout (outbuf, -1, -1, printcharfun, 0);
+ need_nonhex = 1;
+ }
+ else if (SINGLE_BYTE_CHAR_P (c)
+ && ! ASCII_BYTE_P (c)
+ && ! NILP (current_buffer->enable_multibyte_characters))
+ {
+ /* When multibyte is enabled,
+ print single-byte non-ASCII string chars
+ using octal escapes. */
+ unsigned char outbuf[5];
+ sprintf (outbuf, "\\%03o", c);
+ strout (outbuf, -1, -1, printcharfun, 0);
+ }
else
{
+ /* If we just had a hex escape, and this character
+ could be taken as part of it,
+ output `\ ' to prevent that. */
+ if (need_nonhex)
+ {
+ need_nonhex = 0;
+ if ((c >= 'a' && c <= 'f')
+ || (c >= 'A' && c <= 'F')
+ || (c >= '0' && c <= '9'))
+ strout ("\\ ", -1, -1, printcharfun, 0);
+ }
+
if (c == '\"' || c == '\\')
PRINTCHAR ('\\');
PRINTCHAR (c);
{
register int confusing;
register unsigned char *p = XSYMBOL (obj)->name->data;
- register unsigned char *end = p + XSYMBOL (obj)->name->size;
- register unsigned char c;
+ register unsigned char *end = p + STRING_BYTES (XSYMBOL (obj)->name);
+ register int c;
+ int i, i_byte, size_byte;
+ Lisp_Object name;
+
+ XSETSTRING (name, XSYMBOL (obj)->name);
if (p != end && (*p == '-' || *p == '+')) p++;
if (p == end)
confusing = 0;
- else
+ /* If symbol name begins with a digit, and ends with a digit,
+ and contains nothing but digits and `e', it could be treated
+ as a number. So set CONFUSING.
+
+ Symbols that contain periods could also be taken as numbers,
+ but periods are always escaped, so we don't have to worry
+ about them here. */
+ else if (*p >= '0' && *p <= '9'
+ && end[-1] >= '0' && end[-1] <= '9')
{
- while (p != end && *p >= '0' && *p <= '9')
+ while (p != end && ((*p >= '0' && *p <= '9')
+ /* Needed for \2e10. */
+ || *p == 'e'))
p++;
confusing = (end == p);
}
+ else
+ confusing = 0;
- p = XSYMBOL (obj)->name->data;
- while (p != end)
+ /* 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;
+ tem = Fassq (obj, Vprint_gensym_alist);
+ if (CONSP (tem))
+ {
+ PRINTCHAR ('#');
+ print (XCDR (tem), printcharfun, escapeflag);
+ PRINTCHAR ('#');
+ break;
+ }
+ else
+ {
+ if (CONSP (Vprint_gensym_alist))
+ XSETFASTINT (tem, XFASTINT (XCDR (XCAR (Vprint_gensym_alist))) + 1);
+ else
+ XSETFASTINT (tem, 1);
+ Vprint_gensym_alist = Fcons (Fcons (obj, tem), Vprint_gensym_alist);
+
+ PRINTCHAR ('#');
+ print (tem, printcharfun, escapeflag);
+ PRINTCHAR ('=');
+ }
+ }
+ PRINTCHAR ('#');
+ PRINTCHAR (':');
+ }
+
+ size_byte = STRING_BYTES (XSTRING (name));
+
+ for (i = 0, i_byte = 0; i_byte < size_byte;)
+ {
+ /* Here, we must convert each multi-byte form to the
+ corresponding character code before handing it to PRINTCHAR. */
+
+ if (STRING_MULTIBYTE (name))
+ FETCH_STRING_CHAR_ADVANCE (c, name, i, i_byte);
+ else
+ c = XSTRING (name)->data[i_byte++];
+
QUIT;
- c = *p++;
+
if (escapeflag)
{
- if (c == '\"' || c == '\\' || c == '\'' || c == ';' || c == '#' ||
- c == '(' || c == ')' || c == ',' || c =='.' || c == '`' ||
- c == '[' || c == ']' || c == '?' || c <= 040 || confusing)
+ if (c == '\"' || c == '\\' || c == '\''
+ || c == ';' || c == '#' || c == '(' || c == ')'
+ || c == ',' || c =='.' || c == '`'
+ || c == '[' || c == ']' || c == '?' || c <= 040
+ || confusing)
PRINTCHAR ('\\'), confusing = 0;
}
PRINTCHAR (c);
/* If deeper than spec'd depth, print placeholder. */
if (INTEGERP (Vprint_level)
&& print_depth > XINT (Vprint_level))
- strout ("...", -1, printcharfun);
+ strout ("...", -1, -1, printcharfun, 0);
+ else if (print_quoted && CONSP (XCDR (obj)) && NILP (XCDR (XCDR (obj)))
+ && (EQ (XCAR (obj), Qquote)))
+ {
+ PRINTCHAR ('\'');
+ print (XCAR (XCDR (obj)), printcharfun, escapeflag);
+ }
+ else if (print_quoted && CONSP (XCDR (obj)) && NILP (XCDR (XCDR (obj)))
+ && (EQ (XCAR (obj), Qfunction)))
+ {
+ PRINTCHAR ('#');
+ PRINTCHAR ('\'');
+ print (XCAR (XCDR (obj)), printcharfun, escapeflag);
+ }
+ else if (print_quoted && CONSP (XCDR (obj)) && NILP (XCDR (XCDR (obj)))
+ && ((EQ (XCAR (obj), Qbackquote)
+ || EQ (XCAR (obj), Qcomma)
+ || EQ (XCAR (obj), Qcomma_at)
+ || EQ (XCAR (obj), Qcomma_dot))))
+ {
+ print (XCAR (obj), printcharfun, 0);
+ print (XCAR (XCDR (obj)), printcharfun, escapeflag);
+ }
else
{
PRINTCHAR ('(');
{
register int i = 0;
- register int max = 0;
+ register int print_length = 0;
if (INTEGERP (Vprint_length))
- max = XINT (Vprint_length);
+ print_length = XINT (Vprint_length);
/* Could recognize circularities in cdrs here,
but that would make printing of long lists quadratic.
It's not worth doing. */
{
if (i++)
PRINTCHAR (' ');
- if (max && i > max)
+ if (print_length && i > print_length)
{
- strout ("...", 3, printcharfun);
+ strout ("...", 3, 3, printcharfun, 0);
break;
}
- print (Fcar (obj), printcharfun, escapeflag);
- obj = Fcdr (obj);
+ print (XCAR (obj), printcharfun, escapeflag);
+ obj = XCDR (obj);
}
}
- if (!NILP (obj) && !CONSP (obj))
+ if (!NILP (obj))
{
- strout (" . ", 3, printcharfun);
+ strout (" . ", 3, 3, printcharfun, 0);
print (obj, printcharfun, escapeflag);
}
PRINTCHAR (')');
{
if (escapeflag)
{
- strout ("#<process ", -1, printcharfun);
+ strout ("#<process ", -1, -1, printcharfun, 0);
print_string (XPROCESS (obj)->name, printcharfun);
PRINTCHAR ('>');
}
register unsigned char c;
struct gcpro gcpro1;
int size_in_chars
- = (XBOOL_VECTOR (obj)->size + BITS_PER_CHAR) / BITS_PER_CHAR;
+ = (XBOOL_VECTOR (obj)->size + BITS_PER_CHAR - 1) / BITS_PER_CHAR;
GCPRO1 (obj);
PRINTCHAR ('#');
PRINTCHAR ('&');
sprintf (buf, "%d", XBOOL_VECTOR (obj)->size);
- strout (buf, -1, printcharfun);
+ strout (buf, -1, -1, printcharfun, 0);
PRINTCHAR ('\"');
/* Don't print more characters than the specified maximum. */
}
else if (SUBRP (obj))
{
- strout ("#<subr ", -1, printcharfun);
- strout (XSUBR (obj)->symbol_name, -1, printcharfun);
+ strout ("#<subr ", -1, -1, printcharfun, 0);
+ strout (XSUBR (obj)->symbol_name, -1, -1, printcharfun, 0);
PRINTCHAR ('>');
}
#ifndef standalone
else if (WINDOWP (obj))
{
- strout ("#<window ", -1, printcharfun);
+ strout ("#<window ", -1, -1, printcharfun, 0);
sprintf (buf, "%d", XFASTINT (XWINDOW (obj)->sequence_number));
- strout (buf, -1, printcharfun);
+ strout (buf, -1, -1, printcharfun, 0);
if (!NILP (XWINDOW (obj)->buffer))
{
- strout (" on ", -1, printcharfun);
+ strout (" on ", -1, -1, printcharfun, 0);
print_string (XBUFFER (XWINDOW (obj)->buffer)->name, printcharfun);
}
PRINTCHAR ('>');
else if (BUFFERP (obj))
{
if (NILP (XBUFFER (obj)->name))
- strout ("#<killed buffer>", -1, printcharfun);
+ strout ("#<killed buffer>", -1, -1, printcharfun, 0);
else if (escapeflag)
{
- strout ("#<buffer ", -1, printcharfun);
+ strout ("#<buffer ", -1, -1, printcharfun, 0);
print_string (XBUFFER (obj)->name, printcharfun);
PRINTCHAR ('>');
}
}
else if (WINDOW_CONFIGURATIONP (obj))
{
- strout ("#<window-configuration>", -1, printcharfun);
+ strout ("#<window-configuration>", -1, -1, printcharfun, 0);
}
-#ifdef MULTI_FRAME
else if (FRAMEP (obj))
{
strout ((FRAME_LIVE_P (XFRAME (obj))
? "#<frame " : "#<dead frame "),
- -1, printcharfun);
+ -1, -1, printcharfun, 0);
print_string (XFRAME (obj)->name, printcharfun);
- sprintf (buf, " 0x%lx", (unsigned long) (XFRAME (obj)));
- strout (buf, -1, printcharfun);
+ sprintf (buf, " 0x%lx\\ ", (unsigned long) (XFRAME (obj)));
+ strout (buf, -1, -1, printcharfun, 0);
PRINTCHAR ('>');
}
-#endif
#endif /* not standalone */
else
{
character slots. But we add #^ as a prefix. */
PRINTCHAR ('#');
PRINTCHAR ('^');
+ if (SUB_CHAR_TABLE_P (obj))
+ PRINTCHAR ('^');
size &= PSEUDOVECTOR_SIZE_MASK;
}
if (size & PSEUDOVECTOR_FLAG)
switch (XMISCTYPE (obj))
{
case Lisp_Misc_Marker:
- strout ("#<marker ", -1, printcharfun);
+ strout ("#<marker ", -1, -1, printcharfun, 0);
+ /* Do you think this is necessary? */
+ if (XMARKER (obj)->insertion_type != 0)
+ strout ("(before-insertion) ", -1, -1, printcharfun, 0);
if (!(XMARKER (obj)->buffer))
- strout ("in no buffer", -1, printcharfun);
+ strout ("in no buffer", -1, -1, printcharfun, 0);
else
{
sprintf (buf, "at %d", marker_position (obj));
- strout (buf, -1, printcharfun);
- strout (" in ", -1, printcharfun);
+ strout (buf, -1, -1, printcharfun, 0);
+ strout (" in ", -1, -1, printcharfun, 0);
print_string (XMARKER (obj)->buffer->name, printcharfun);
}
PRINTCHAR ('>');
break;
case Lisp_Misc_Overlay:
- strout ("#<overlay ", -1, printcharfun);
+ strout ("#<overlay ", -1, -1, printcharfun, 0);
if (!(XMARKER (OVERLAY_START (obj))->buffer))
- strout ("in no buffer", -1, printcharfun);
+ strout ("in no buffer", -1, -1, printcharfun, 0);
else
{
sprintf (buf, "from %d to %d in ",
marker_position (OVERLAY_START (obj)),
marker_position (OVERLAY_END (obj)));
- strout (buf, -1, printcharfun);
+ strout (buf, -1, -1, printcharfun, 0);
print_string (XMARKER (OVERLAY_START (obj))->buffer->name,
printcharfun);
}
/* Remaining cases shouldn't happen in normal usage, but let's print
them anyway for the benefit of the debugger. */
case Lisp_Misc_Free:
- strout ("#<misc free cell>", -1, printcharfun);
+ strout ("#<misc free cell>", -1, -1, printcharfun, 0);
break;
case Lisp_Misc_Intfwd:
sprintf (buf, "#<intfwd to %d>", *XINTFWD (obj)->intvar);
- strout (buf, -1, printcharfun);
+ strout (buf, -1, -1, printcharfun, 0);
break;
case Lisp_Misc_Boolfwd:
sprintf (buf, "#<boolfwd to %s>",
(*XBOOLFWD (obj)->boolvar ? "t" : "nil"));
- strout (buf, -1, printcharfun);
+ strout (buf, -1, -1, printcharfun, 0);
break;
case Lisp_Misc_Objfwd:
- strout ("#<objfwd to ", -1, printcharfun);
+ strout ("#<objfwd to ", -1, -1, printcharfun, 0);
print (*XOBJFWD (obj)->objvar, printcharfun, escapeflag);
PRINTCHAR ('>');
break;
case Lisp_Misc_Buffer_Objfwd:
- strout ("#<buffer_objfwd to ", -1, printcharfun);
+ strout ("#<buffer_objfwd to ", -1, -1, printcharfun, 0);
print (*(Lisp_Object *)((char *)current_buffer
+ XBUFFER_OBJFWD (obj)->offset),
printcharfun, escapeflag);
break;
case Lisp_Misc_Kboard_Objfwd:
- strout ("#<kboard_objfwd to ", -1, printcharfun);
+ strout ("#<kboard_objfwd to ", -1, -1, printcharfun, 0);
print (*(Lisp_Object *)((char *) current_kboard
+ XKBOARD_OBJFWD (obj)->offset),
printcharfun, escapeflag);
break;
case Lisp_Misc_Buffer_Local_Value:
- strout ("#<buffer_local_value ", -1, printcharfun);
+ strout ("#<buffer_local_value ", -1, -1, printcharfun, 0);
goto do_buffer_local;
case Lisp_Misc_Some_Buffer_Local_Value:
- strout ("#<some_buffer_local_value ", -1, printcharfun);
+ strout ("#<some_buffer_local_value ", -1, -1, printcharfun, 0);
do_buffer_local:
- strout ("[realvalue] ", -1, printcharfun);
- print (XBUFFER_LOCAL_VALUE (obj)->car, printcharfun, escapeflag);
- strout ("[buffer] ", -1, printcharfun);
- print (XCONS (XBUFFER_LOCAL_VALUE (obj)->cdr)->car,
+ strout ("[realvalue] ", -1, -1, printcharfun, 0);
+ print (XBUFFER_LOCAL_VALUE (obj)->realvalue, printcharfun, escapeflag);
+ if (XBUFFER_LOCAL_VALUE (obj)->found_for_buffer)
+ strout ("[local in buffer] ", -1, -1, printcharfun, 0);
+ else
+ strout ("[buffer] ", -1, -1, printcharfun, 0);
+ print (XBUFFER_LOCAL_VALUE (obj)->buffer,
printcharfun, escapeflag);
- strout ("[alist-elt] ", -1, printcharfun);
- print (XCONS (XCONS (XBUFFER_LOCAL_VALUE (obj)->cdr)->cdr)->car,
+ if (XBUFFER_LOCAL_VALUE (obj)->check_frame)
+ {
+ if (XBUFFER_LOCAL_VALUE (obj)->found_for_frame)
+ strout ("[local in frame] ", -1, -1, printcharfun, 0);
+ else
+ strout ("[frame] ", -1, -1, printcharfun, 0);
+ print (XBUFFER_LOCAL_VALUE (obj)->frame,
+ printcharfun, escapeflag);
+ }
+ strout ("[alist-elt] ", -1, -1, printcharfun, 0);
+ print (XCONS (XBUFFER_LOCAL_VALUE (obj)->cdr)->car,
printcharfun, escapeflag);
- strout ("[default-value] ", -1, printcharfun);
- print (XCONS (XCONS (XBUFFER_LOCAL_VALUE (obj)->cdr)->cdr)->cdr,
+ strout ("[default-value] ", -1, -1, printcharfun, 0);
+ print (XCONS (XBUFFER_LOCAL_VALUE (obj)->cdr)->cdr,
printcharfun, escapeflag);
PRINTCHAR ('>');
break;
{
/* We're in trouble if this happens!
Probably should just abort () */
- strout ("#<EMACS BUG: INVALID DATATYPE ", -1, printcharfun);
+ strout ("#<EMACS BUG: INVALID DATATYPE ", -1, -1, printcharfun, 0);
if (MISCP (obj))
sprintf (buf, "(MISC 0x%04x)", (int) XMISCTYPE (obj));
else if (VECTORLIKEP (obj))
sprintf (buf, "(PVEC 0x%08x)", (int) XVECTOR (obj)->size);
else
sprintf (buf, "(0x%02x)", (int) XTYPE (obj));
- strout (buf, -1, printcharfun);
+ strout (buf, -1, -1, printcharfun, 0);
strout (" Save your buffers immediately and please report this bug>",
- -1, printcharfun);
+ -1, -1, printcharfun, 0);
}
}
void
syms_of_print ()
{
- staticpro (&Qprint_escape_newlines);
- Qprint_escape_newlines = intern ("print-escape-newlines");
-
DEFVAR_LISP ("standard-output", &Vstandard_output,
"Output stream `print' uses by default for outputting a character.\n\
This may be any function of one argument.\n\
The precision in any of these cases is the number of digits following\n\
the decimal point. With `f', a precision of 0 means to omit the\n\
decimal point. 0 is not allowed with `e' or `g'.\n\n\
-A value of nil means to use `%.17g'.");
+A value of nil means to use the shortest notation\n\
+that represents the number without losing information.");
Vfloat_output_format = Qnil;
Qfloat_output_format = intern ("float-output-format");
staticpro (&Qfloat_output_format);
Also print formfeeds as backslash-f.");
print_escape_newlines = 0;
+ DEFVAR_BOOL ("print-quoted", &print_quoted,
+ "Non-nil means print quoted forms with reader syntax.\n\
+I.e., (quote foo) prints as 'foo, (function foo) as #'foo, and, backquoted\n\
+forms print in the new syntax.");
+ print_quoted = 0;
+
+ DEFVAR_LISP ("print-gensym", &Vprint_gensym,
+ "Non-nil means print uninterned symbols so they will read as uninterned.\n\
+I.e., the value of (make-symbol \"foobar\") prints as #:foobar.\n\
+When the uninterned symbol appears within a larger data structure,\n\
+in addition use the #...# and #...= constructs as needed,\n\
+so that multiple references to the same symbol are shared once again\n\
+when the text is read back.\n\
+\n\
+If the value of `print-gensym' is a cons cell, then in addition refrain from\n\
+clearing `print-gensym-alist' on entry to and exit from printing functions,\n\
+so that the use of #...# and #...= can carry over for several separately\n\
+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=.\n\
+In each element, GENSYM is an uninterned symbol that has been associated\n\
+with #N= for the specified value of N.");
+ Vprint_gensym_alist = Qnil;
+
/* prin1_to_string_buffer initialized in init_buffer_once in buffer.c */
staticpro (&Vprin1_to_string_buffer);
Qexternal_debugging_output = intern ("external-debugging-output");
staticpro (&Qexternal_debugging_output);
+ Qprint_escape_newlines = intern ("print-escape-newlines");
+ staticpro (&Qprint_escape_newlines);
+
#ifndef standalone
defsubr (&Swith_output_to_temp_buffer);
#endif /* not standalone */
HCoop / bpt / emacs.git / blobdiff