/* Lisp object printing and output streams.
-Copyright (C) 1985-1986, 1988, 1993-1995, 1997-2011
+Copyright (C) 1985-1986, 1988, 1993-1995, 1997-2012
Free Software Foundation, Inc.
This file is part of GNU Emacs.
#include <stdio.h>
#include <setjmp.h>
#include "lisp.h"
-#include "buffer.h"
#include "character.h"
+#include "buffer.h"
#include "charset.h"
#include "keyboard.h"
#include "frame.h"
#endif
/* Avoid actual stack overflow in print. */
-static int print_depth;
+static ptrdiff_t print_depth;
/* Level of nesting inside outputting backquote in new style. */
-static int new_backquote_output;
+static ptrdiff_t new_backquote_output;
/* Detect most circularities to print finite output. */
#define PRINT_CIRCLE 200
N the object has been printed so we can refer to it as #N#.
print_number_index holds the largest N already used.
N has to be striclty larger than 0 since we need to distinguish -N. */
-static int print_number_index;
+static ptrdiff_t print_number_index;
static void print_interval (INTERVAL interval, Lisp_Object printcharfun);
/* GDB resets this to zero on W32 to disable OutputDebugString calls. */
int print_output_debug_flag EXTERNALLY_VISIBLE = 1;
\f
-/* Low level output routines for characters and strings */
+/* 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, 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. */
+ or call strout to output a block of characters. */
#define PRINTDECLARE \
struct buffer *old = current_buffer; \
else \
{ \
int new_size = 1000; \
- print_buffer = (char *) xmalloc (new_size); \
+ print_buffer = xmalloc (new_size); \
print_buffer_size = new_size; \
free_print_buffer = 1; \
} \
if (print_buffer_pos != print_buffer_pos_byte \
&& NILP (BVAR (current_buffer, enable_multibyte_characters))) \
{ \
- unsigned char *temp \
- = (unsigned char *) alloca (print_buffer_pos + 1); \
+ unsigned char *temp = alloca (print_buffer_pos + 1); \
copy_text ((unsigned char *) print_buffer, temp, \
print_buffer_pos_byte, 1, 0); \
insert_1_both ((char *) temp, print_buffer_pos, \
printcharfun = Vprin1_to_string_buffer;
PRINTPREPARE;
print (object, printcharfun, NILP (noescape));
- /* Make Vprin1_to_string_buffer be the default buffer after PRINTFINSH */
+ /* Make Vprin1_to_string_buffer be the default buffer after PRINTFINISH */
PRINTFINISH;
}
{
Lisp_Object errname, errmsg, file_error, tail;
struct gcpro gcpro1;
- int i;
if (context != 0)
write_string_1 (context, -1, stream);
}
else
{
- Lisp_Object error_conditions;
+ Lisp_Object error_conditions = Fget (errname, Qerror_conditions);
errmsg = Fget (errname, Qerror_message);
- error_conditions = Fget (errname, Qerror_conditions);
file_error = Fmemq (Qfile_error, error_conditions);
}
if (!NILP (file_error) && CONSP (tail))
errmsg = XCAR (tail), tail = XCDR (tail);
- if (STRINGP (errmsg))
- Fprinc (errmsg, stream);
- else
- write_string_1 ("peculiar error", -1, stream);
+ {
+ const char *sep = ": ";
- for (i = 0; CONSP (tail); tail = XCDR (tail), i = 1)
- {
- Lisp_Object obj;
+ if (!STRINGP (errmsg))
+ write_string_1 ("peculiar error", -1, stream);
+ else if (SCHARS (errmsg))
+ Fprinc (errmsg, stream);
+ else
+ sep = NULL;
- write_string_1 (i ? ", " : ": ", 2, stream);
- obj = XCAR (tail);
- if (!NILP (file_error) || EQ (errname, Qend_of_file))
- Fprinc (obj, stream);
- else
- Fprin1 (obj, stream);
- }
+ for (; CONSP (tail); tail = XCDR (tail), sep = ", ")
+ {
+ Lisp_Object obj;
+
+ if (sep)
+ write_string_1 (sep, 2, stream);
+ obj = XCAR (tail);
+ if (!NILP (file_error)
+ || EQ (errname, Qend_of_file) || EQ (errname, Quser_error))
+ Fprinc (obj, stream);
+ else
+ Fprin1 (obj, stream);
+ }
+ }
UNGCPRO;
}
* Given the above, the buffer must be least FLOAT_TO_STRING_BUFSIZE bytes.
*/
-void
+int
float_to_string (char *buf, double data)
{
char *cp;
int width;
+ int len;
/* 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;
+ static char const infinity_string[] = "1.0e+INF";
+ strcpy (buf, infinity_string);
+ return sizeof infinity_string - 1;
}
/* Likewise for minus infinity. */
if (data == data / 2 && data < -1.0)
{
- strcpy (buf, "-1.0e+INF");
- return;
+ static char const minus_infinity_string[] = "-1.0e+INF";
+ strcpy (buf, minus_infinity_string);
+ return sizeof minus_infinity_string - 1;
}
/* Check for NaN in a way that won't fail if there are no NaNs. */
if (! (data * 0.0 >= 0.0))
{
/* Prepend "-" if the NaN's sign bit is negative.
The sign bit of a double is the bit that is 1 in -0.0. */
+ static char const NaN_string[] = "0.0e+NaN";
int i;
union { double d; char c[sizeof (double)]; } u_data, u_minus_zero;
+ int negative = 0;
u_data.d = data;
u_minus_zero.d = - 0.0;
for (i = 0; i < sizeof (double); i++)
if (u_data.c[i] & u_minus_zero.c[i])
{
- *buf++ = '-';
+ *buf = '-';
+ negative = 1;
break;
}
- strcpy (buf, "0.0e+NaN");
- return;
+ strcpy (buf + negative, NaN_string);
+ return negative + sizeof NaN_string - 1;
}
if (NILP (Vfloat_output_format)
{
/* Generate the fewest number of digits that represent the
floating point value without losing information. */
- dtoastr (buf, FLOAT_TO_STRING_BUFSIZE - 2, 0, 0, data);
+ len = dtoastr (buf, FLOAT_TO_STRING_BUFSIZE - 2, 0, 0, data);
/* The decimal point must be printed, or the byte compiler can
get confused (Bug#8033). */
width = 1;
if (cp[1] != 0)
goto lose;
- sprintf (buf, SSDATA (Vfloat_output_format), data);
+ len = sprintf (buf, SSDATA (Vfloat_output_format), data);
}
/* Make sure there is a decimal point with digit after, or an
{
cp[1] = '0';
cp[2] = 0;
+ len++;
}
else if (*cp == 0)
{
*cp++ = '.';
*cp++ = '0';
*cp++ = 0;
+ len += 2;
}
}
+
+ return len;
}
\f
if (HASH_TABLE_P (Vprint_number_table))
{ /* Remove unnecessary objects, which appear only once in OBJ;
- that is, whose status is Qt.
- Maybe a better way to do that is to copy elements to
- a new hash table. */
+ that is, whose status is Qt. */
struct Lisp_Hash_Table *h = XHASH_TABLE (Vprint_number_table);
ptrdiff_t i;
int loop_count = 0;
Lisp_Object halftail;
- /* Give up if we go so deep that print_object will get an error. */
- /* See similar code in print_object. */
- if (print_depth >= PRINT_CIRCLE)
- error ("Apparently circular structure being printed");
-
/* Avoid infinite recursion for circular nested structure
in the case where Vprint_circle is nil. */
if (NILP (Vprint_circle))
{
+ /* Give up if we go so deep that print_object will get an error. */
+ /* See similar code in print_object. */
+ if (print_depth >= PRINT_CIRCLE)
+ error ("Apparently circular structure being printed");
+
for (i = 0; i < print_depth; i++)
if (EQ (obj, being_printed[i]))
return;
if (size & PSEUDOVECTOR_FLAG)
size &= PSEUDOVECTOR_SIZE_MASK;
for (i = 0; i < size; i++)
- print_preprocess (XVECTOR (obj)->contents[i]);
+ print_preprocess (AREF (obj, i));
if (HASH_TABLE_P (obj))
{ /* For hash tables, the key_and_value slot is past
`size' because it needs to be marked specially in case
#define PRINT_STRING_NON_CHARSET_FOUND 1
#define PRINT_STRING_UNSAFE_CHARSET_FOUND 2
-/* Bitwise or of the above macros. */
+/* Bitwise or of the above macros. */
static int print_check_string_result;
static void
QUIT;
- /* See similar code in print_preprocess. */
- if (print_depth >= PRINT_CIRCLE)
- error ("Apparently circular structure being printed");
-
/* Detect circularities and truncate them. */
- if (PRINT_CIRCLE_CANDIDATE_P (obj))
+ if (NILP (Vprint_circle))
{
- if (NILP (Vprint_circle) && NILP (Vprint_gensym))
- {
- /* Simple but incomplete way. */
- int i;
- for (i = 0; i < print_depth; i++)
- if (EQ (obj, being_printed[i]))
- {
- sprintf (buf, "#%d", i);
- strout (buf, -1, -1, printcharfun);
- return;
- }
- being_printed[print_depth] = obj;
- }
- else
+ /* Simple but incomplete way. */
+ int i;
+
+ /* See similar code in print_preprocess. */
+ if (print_depth >= PRINT_CIRCLE)
+ error ("Apparently circular structure being printed");
+
+ for (i = 0; i < print_depth; i++)
+ if (EQ (obj, being_printed[i]))
+ {
+ int len = sprintf (buf, "#%d", i);
+ strout (buf, len, len, printcharfun);
+ return;
+ }
+ being_printed[print_depth] = obj;
+ }
+ else if (PRINT_CIRCLE_CANDIDATE_P (obj))
+ {
+ /* With the print-circle feature. */
+ Lisp_Object num = Fgethash (obj, Vprint_number_table, Qnil);
+ if (INTEGERP (num))
{
- /* With the print-circle feature. */
- Lisp_Object num = Fgethash (obj, Vprint_number_table, Qnil);
- if (INTEGERP (num))
+ EMACS_INT n = XINT (num);
+ if (n < 0)
+ { /* Add a prefix #n= if OBJ has not yet been printed;
+ that is, its status field is nil. */
+ int len = sprintf (buf, "#%"pI"d=", -n);
+ strout (buf, len, len, printcharfun);
+ /* OBJ is going to be printed. Remember that fact. */
+ Fputhash (obj, make_number (- n), Vprint_number_table);
+ }
+ else
{
- EMACS_INT n = XINT (num);
- if (n < 0)
- { /* Add a prefix #n= if OBJ has not yet been printed;
- that is, its status field is nil. */
- sprintf (buf, "#%"pI"d=", -n);
- strout (buf, -1, -1, printcharfun);
- /* OBJ is going to be printed. Remember that fact. */
- Fputhash (obj, make_number (- n), Vprint_number_table);
- }
- else
- {
- /* Just print #n# if OBJ has already been printed. */
- sprintf (buf, "#%"pI"d#", n);
- strout (buf, -1, -1, printcharfun);
- return;
- }
+ /* Just print #n# if OBJ has already been printed. */
+ int len = sprintf (buf, "#%"pI"d#", n);
+ strout (buf, len, len, printcharfun);
+ return;
}
}
}
switch (XTYPE (obj))
{
case_Lisp_Int:
- sprintf (buf, "%"pI"d", XINT (obj));
- strout (buf, -1, -1, printcharfun);
+ {
+ int len = sprintf (buf, "%"pI"d", XINT (obj));
+ strout (buf, len, len, printcharfun);
+ }
break;
case Lisp_Float:
{
char pigbuf[FLOAT_TO_STRING_BUFSIZE];
-
- float_to_string (pigbuf, XFLOAT_DATA (obj));
- strout (pigbuf, -1, -1, printcharfun);
+ int len = float_to_string (pigbuf, XFLOAT_DATA (obj));
+ strout (pigbuf, len, len, printcharfun);
}
break;
when found in a multibyte string, always use a hex escape
so it reads back as multibyte. */
char outbuf[50];
+ int len;
if (CHAR_BYTE8_P (c))
- sprintf (outbuf, "\\%03o", CHAR_TO_BYTE8 (c));
+ len = sprintf (outbuf, "\\%03o", CHAR_TO_BYTE8 (c));
else
{
- sprintf (outbuf, "\\x%04x", c);
+ len = sprintf (outbuf, "\\x%04x", c);
need_nonhex = 1;
}
- strout (outbuf, -1, -1, printcharfun);
+ strout (outbuf, len, len, printcharfun);
}
else if (! multibyte
&& SINGLE_BYTE_CHAR_P (c) && ! ASCII_BYTE_P (c)
print single-byte non-ASCII string chars
using octal escapes. */
char outbuf[5];
- sprintf (outbuf, "\\%03o", c);
- strout (outbuf, -1, -1, printcharfun);
+ int len = sprintf (outbuf, "\\%03o", c);
+ strout (outbuf, len, len, printcharfun);
}
else
{
/* Detect circular list. */
if (NILP (Vprint_circle))
{
- /* Simple but imcomplete way. */
+ /* Simple but incomplete way. */
if (i != 0 && EQ (obj, halftail))
{
- sprintf (buf, " . #%"pMd, i / 2);
- strout (buf, -1, -1, printcharfun);
+ int len = sprintf (buf, " . #%"pMd, i / 2);
+ strout (buf, len, len, printcharfun);
goto end_of_list;
}
}
else if (BOOL_VECTOR_P (obj))
{
ptrdiff_t i;
- register unsigned char c;
+ int len;
+ unsigned char c;
struct gcpro gcpro1;
ptrdiff_t size_in_chars
= ((XBOOL_VECTOR (obj)->size + BOOL_VECTOR_BITS_PER_CHAR - 1)
PRINTCHAR ('#');
PRINTCHAR ('&');
- sprintf (buf, "%"pI"d", XBOOL_VECTOR (obj)->size);
- strout (buf, -1, -1, printcharfun);
+ len = sprintf (buf, "%"pI"d", XBOOL_VECTOR (obj)->size);
+ strout (buf, len, len, printcharfun);
PRINTCHAR ('\"');
/* Don't print more characters than the specified maximum.
}
else if (WINDOWP (obj))
{
+ int len;
strout ("#<window ", -1, -1, printcharfun);
- sprintf (buf, "%"pI"d", XFASTINT (XWINDOW (obj)->sequence_number));
- strout (buf, -1, -1, printcharfun);
+ len = sprintf (buf, "%d", XWINDOW (obj)->sequence_number);
+ strout (buf, len, len, printcharfun);
if (!NILP (XWINDOW (obj)->buffer))
{
strout (" on ", -1, -1, printcharfun);
}
else if (TERMINALP (obj))
{
+ int len;
struct terminal *t = XTERMINAL (obj);
strout ("#<terminal ", -1, -1, printcharfun);
- sprintf (buf, "%d", t->id);
- strout (buf, -1, -1, printcharfun);
+ len = sprintf (buf, "%d", t->id);
+ strout (buf, len, len, printcharfun);
if (t->name)
{
strout (" on ", -1, -1, printcharfun);
struct Lisp_Hash_Table *h = XHASH_TABLE (obj);
ptrdiff_t i;
ptrdiff_t real_size, size;
+ int len;
#if 0
strout ("#<hash-table", -1, -1, printcharfun);
if (SYMBOLP (h->test))
PRINTCHAR (' ');
strout (SDATA (SYMBOL_NAME (h->weak)), -1, -1, printcharfun);
PRINTCHAR (' ');
- sprintf (buf, "%"pD"d/%"pD"d", h->count, ASIZE (h->next));
- strout (buf, -1, -1, printcharfun);
+ len = sprintf (buf, "%"pD"d/%"pD"d", h->count, ASIZE (h->next));
+ strout (buf, len, len, printcharfun);
}
- sprintf (buf, " %p", h);
- strout (buf, -1, -1, printcharfun);
+ len = sprintf (buf, " %p", h);
+ strout (buf, len, len, printcharfun);
PRINTCHAR ('>');
#endif
/* Implement a readable output, e.g.:
#s(hash-table size 2 test equal data (k1 v1 k2 v2)) */
/* Always print the size. */
- sprintf (buf, "#s(hash-table size %"pD"d", ASIZE (h->next));
- strout (buf, -1, -1, printcharfun);
+ len = sprintf (buf, "#s(hash-table size %"pD"d", ASIZE (h->next));
+ strout (buf, len, len, printcharfun);
if (!NILP (h->test))
{
}
else if (FRAMEP (obj))
{
+ int len;
+ Lisp_Object frame_name = FVAR (XFRAME (obj), name);
+
strout ((FRAME_LIVE_P (XFRAME (obj))
? "#<frame " : "#<dead frame "),
-1, -1, printcharfun);
- print_string (XFRAME (obj)->name, printcharfun);
- sprintf (buf, " %p", XFRAME (obj));
- strout (buf, -1, -1, printcharfun);
+ if (!STRINGP (frame_name))
+ {
+ /* A frame could be too young and have no name yet;
+ don't crash. */
+ if (SYMBOLP (frame_name))
+ frame_name = Fsymbol_name (frame_name);
+ else /* can't happen: name should be either nil or string */
+ frame_name = build_string ("*INVALID*FRAME*NAME*");
+ }
+ print_string (frame_name, printcharfun);
+ len = sprintf (buf, " %p", XFRAME (obj));
+ strout (buf, len, len, printcharfun);
PRINTCHAR ('>');
}
else if (FONTP (obj))
for (i = 0; i < size; i++)
{
if (i) PRINTCHAR (' ');
- tem = XVECTOR (obj)->contents[i];
+ tem = AREF (obj, i);
print_object (tem, printcharfun, escapeflag);
}
if (size < real_size)
strout ("in no buffer", -1, -1, printcharfun);
else
{
- sprintf (buf, "at %"pD"d", marker_position (obj));
- strout (buf, -1, -1, printcharfun);
+ int len = sprintf (buf, "at %"pD"d", marker_position (obj));
+ strout (buf, len, len, printcharfun);
strout (" in ", -1, -1, printcharfun);
print_string (BVAR (XMARKER (obj)->buffer, name), printcharfun);
}
strout ("in no buffer", -1, -1, printcharfun);
else
{
- sprintf (buf, "from %"pD"d to %"pD"d in ",
- marker_position (OVERLAY_START (obj)),
- marker_position (OVERLAY_END (obj)));
- strout (buf, -1, -1, printcharfun);
+ int len = sprintf (buf, "from %"pD"d to %"pD"d in ",
+ marker_position (OVERLAY_START (obj)),
+ marker_position (OVERLAY_END (obj)));
+ strout (buf, len, len, printcharfun);
print_string (BVAR (XMARKER (OVERLAY_START (obj))->buffer, name),
printcharfun);
}
case Lisp_Misc_Save_Value:
strout ("#<save_value ", -1, -1, printcharfun);
- sprintf (buf, "ptr=%p int=%"pD"d",
- XSAVE_VALUE (obj)->pointer,
- XSAVE_VALUE (obj)->integer);
- strout (buf, -1, -1, printcharfun);
+ {
+ int len = sprintf (buf, "ptr=%p int=%"pD"d",
+ XSAVE_VALUE (obj)->pointer,
+ XSAVE_VALUE (obj)->integer);
+ strout (buf, len, len, printcharfun);
+ }
PRINTCHAR ('>');
break;
default:
badtype:
{
+ int len;
/* We're in trouble if this happens!
Probably should just abort () */
strout ("#<EMACS BUG: INVALID DATATYPE ", -1, -1, printcharfun);
if (MISCP (obj))
- sprintf (buf, "(MISC 0x%04x)", (int) XMISCTYPE (obj));
+ len = sprintf (buf, "(MISC 0x%04x)", (int) XMISCTYPE (obj));
else if (VECTORLIKEP (obj))
- sprintf (buf, "(PVEC 0x%08"pD"x)", ASIZE (obj));
+ len = sprintf (buf, "(PVEC 0x%08"pD"x)", ASIZE (obj));
else
- sprintf (buf, "(0x%02x)", (int) XTYPE (obj));
- strout (buf, -1, -1, printcharfun);
+ len = sprintf (buf, "(0x%02x)", (int) XTYPE (obj));
+ strout (buf, len, len, printcharfun);
strout (" Save your buffers immediately and please report this bug>",
-1, -1, printcharfun);
}
Vprint_gensym = Qnil;
DEFVAR_LISP ("print-circle", Vprint_circle,
- doc: /* *Non-nil means print recursive structures using #N= and #N# syntax.
+ doc: /* Non-nil means print recursive structures using #N= and #N# syntax.
If nil, printing proceeds recursively and may lead to
`max-lisp-eval-depth' being exceeded or an error may occur:
\"Apparently circular structure being printed.\" Also see
Vprint_circle = Qnil;
DEFVAR_LISP ("print-continuous-numbering", Vprint_continuous_numbering,
- doc: /* *Non-nil means number continuously across print calls.
+ doc: /* Non-nil means number continuously across print calls.
This affects the numbers printed for #N= labels and #M# references.
See also `print-circle', `print-gensym', and `print-number-table'.
This variable should not be set with `setq'; bind it with a `let' instead. */);
HCoop / bpt / emacs.git / blobdiff