#include "buffer.h"
#include "lstream.h"
-static const char *valid_flags = "-+ #0";
-
-static const char *valid_converters = "diouxXfeEgGcsS";
-static const char *int_converters = "dic";
-static const char *unsigned_int_converters = "ouxX";
-static const char *double_converters = "feEgG";
-static const char *string_converters = "sS";
+static const char * const valid_flags = "-+ #0";
+static const char * const valid_converters = "dic" "ouxX" "feEgG" "sS";
+static const char * const int_converters = "dic";
+static const char * const unsigned_int_converters = "ouxXc";
+static const char * const double_converters = "feEgG";
+static const char * const string_converters = "sS";
typedef struct printf_spec printf_spec;
struct printf_spec
typedef union printf_arg printf_arg;
union printf_arg
{
- int i;
- unsigned int ui;
long l;
unsigned long ul;
double d;
Dynarr_declare (union printf_arg);
} printf_arg_dynarr;
-/* Append STRING (of length LEN) to STREAM. MINLEN is the minimum field
- width. If MINUS_FLAG is set, left-justify the string in its field;
- otherwise, right-justify. If ZERO_FLAG is set, pad with 0's; otherwise
- pad with spaces. If MAXLEN is non-negative, the string is first
- truncated to that many character.
+/* Append STRING (of length LEN bytes) to STREAM.
+ MINLEN is the minimum field width.
+ If MINUS_FLAG is set, left-justify the string in its field;
+ otherwise, right-justify.
+ If ZERO_FLAG is set, pad with 0's; otherwise pad with spaces.
+ If MAXLEN is non-negative, the string is first truncated on the
+ right to that many characters.
Note that MINLEN and MAXLEN are Charcounts but LEN is a Bytecount. */
doprnt_1 (Lisp_Object stream, const Bufbyte *string, Bytecount len,
Charcount minlen, Charcount maxlen, int minus_flag, int zero_flag)
{
- Charcount cclen;
- Bufbyte pad;
Lstream *lstr = XLSTREAM (stream);
-
- cclen = bytecount_to_charcount (string, len);
-
- if (zero_flag)
- pad = '0';
- else
- pad = ' ';
+ Charcount cclen = bytecount_to_charcount (string, len);
+ int to_add = minlen - cclen;
/* Padding at beginning to right-justify ... */
- if (minlen > cclen && !minus_flag)
- {
- int to_add = minlen - cclen;
- while (to_add > 0)
- {
- Lstream_putc (lstr, pad);
- to_add--;
- }
- }
+ if (!minus_flag)
+ while (to_add-- > 0)
+ Lstream_putc (lstr, zero_flag ? '0' : ' ');
- if (maxlen >= 0)
- len = charcount_to_bytecount (string, min (maxlen, cclen));
+ if (0 <= maxlen && maxlen < cclen)
+ len = charcount_to_bytecount (string, maxlen);
Lstream_write (lstr, string, len);
/* Padding at end to left-justify ... */
- if (minlen > cclen && minus_flag)
- {
- int to_add = minlen - cclen;
- while (to_add > 0)
- {
- Lstream_putc (lstr, pad);
- to_add--;
- }
- }
+ if (minus_flag)
+ while (to_add-- > 0)
+ Lstream_putc (lstr, zero_flag ? '0' : ' ');
}
static const Bufbyte *
{
switch (ch)
{
- case '-': spec.minus_flag = 1; break;
- case '+': spec.plus_flag = 1; break;
- case ' ': spec.space_flag = 1; break;
+ case '-': spec.minus_flag = 1; break;
+ case '+': spec.plus_flag = 1; break;
+ case ' ': spec.space_flag = 1; break;
case '#': spec.number_flag = 1; break;
- case '0': spec.zero_flag = 1; break;
- default: abort ();
+ case '0': spec.zero_flag = 1; break;
+ default: ABORT ();
}
NEXT_ASCII_BYTE (ch);
}
ch = spec->converter;
- /* int even if ch == 'c': "the type used in va_arg is supposed to
- match the actual type **after default promotions**." */
-
if (strchr (int_converters, ch))
{
- if (spec->h_flag)
- arg.i = va_arg (vargs, int /* short */);
- else if (spec->l_flag)
+ if (spec->l_flag)
arg.l = va_arg (vargs, long);
else
- arg.i = va_arg (vargs, int);
+ /* int even if ch == 'c' or spec->h_flag:
+ "the type used in va_arg is supposed to match the
+ actual type **after default promotions**."
+ Hence we read an int, not a short, if spec->h_flag. */
+ arg.l = va_arg (vargs, int);
}
else if (strchr (unsigned_int_converters, ch))
{
- if (spec->h_flag)
- arg.ui = va_arg (vargs, unsigned int /* unsigned short */);
- else if (spec->l_flag)
+ if (spec->l_flag)
arg.ul = va_arg (vargs, unsigned long);
else
- arg.ui = va_arg (vargs, unsigned int);
+ /* unsigned int even if ch == 'c' or spec->h_flag */
+ arg.ul = (unsigned long) va_arg (vargs, unsigned int);
}
else if (strchr (double_converters, ch))
arg.d = va_arg (vargs, double);
else if (strchr (string_converters, ch))
arg.bp = va_arg (vargs, Bufbyte *);
- else abort ();
+ else ABORT ();
Dynarr_add (args, arg);
}
specs = parse_doprnt_spec (format_nonreloc, format_length);
if (largs)
{
- /* allow too many args for string, but not too few */
+ /* allow too many args for string, but not too few */
if (nargs < get_args_needed (specs))
signal_error (Qwrong_number_of_arguments,
list3 (Qformat,
/* Copy the text before */
if (!NILP (format_reloc)) /* refetch in case of GC below */
format_nonreloc = XSTRING_DATA (format_reloc);
- doprnt_1 (stream, format_nonreloc + spec->text_before,
- spec->text_before_len, 0, -1, 0, 0);
+
+ doprnt_1 (stream, format_nonreloc + spec->text_before,
+ spec->text_before_len, 0, -1, 0, 0);
ch = spec->converter;
else
{
nextspec->minwidth = XINT (obj);
- if (XINT(obj) < 0)
+ if (XINT (obj) < 0)
{
spec->minus_flag = 1;
nextspec->minwidth = - nextspec->minwidth;
}
}
- nextspec->minus_flag = spec->minus_flag;
- nextspec->plus_flag = spec->plus_flag;
- nextspec->space_flag = spec->space_flag;
+ nextspec->minus_flag = spec->minus_flag;
+ nextspec->plus_flag = spec->plus_flag;
+ nextspec->space_flag = spec->space_flag;
nextspec->number_flag = spec->number_flag;
- nextspec->zero_flag = spec->zero_flag;
+ nextspec->zero_flag = spec->zero_flag;
}
continue;
}
arg.d = XFLOATINT (obj);
else
{
- int val;
-
if (FLOATP (obj))
- val = XINT (Ftruncate (obj));
- else
- val = XINT (obj);
+ obj = Ftruncate (obj);
+
if (strchr (unsigned_int_converters, ch))
- {
- if (spec->l_flag)
- arg.ul = (unsigned long) val;
- else
- arg.ui = (unsigned int) val;
- }
+ arg.ul = (unsigned long) XUINT (obj);
else
- {
- if (spec->l_flag)
- arg.l = (long) val;
- else
- arg.i = val;
- }
+ arg.l = XINT (obj);
}
}
Bytecount charlen;
Bufbyte charbuf[MAX_EMCHAR_LEN];
- if (spec->l_flag)
- a = (Emchar) arg.l;
- else
- a = (Emchar) arg.i;
+ a = (Emchar) arg.l;
if (!valid_char_p (a))
error ("invalid character value %d to %%c spec", a);
doprnt_1 (stream, charbuf, charlen, spec->minwidth,
-1, spec->minus_flag, spec->zero_flag);
}
-
else
{
- char text_to_print[500];
+ /* ASCII Decimal representation uses 2.4 times as many
+ bits as machine binary. */
+ char *text_to_print =
+ alloca_array (char, 32 +
+ max (spec->minwidth,
+ (EMACS_INT)
+ max (sizeof (double), sizeof (long)) * 3 +
+ max (spec->precision, 0)));
char constructed_spec[100];
+ char *p = constructed_spec;
- /* Partially reconstruct the spec and use sprintf() to
+ /* Mostly reconstruct the spec and use sprintf() to
format the string. */
- /* Make sure nothing stupid happens */
- /* DO NOT REMOVE THE (int) CAST! Incorrect results will
- follow! */
- spec->precision = min (spec->precision,
- (int) (sizeof (text_to_print) - 50));
-
- constructed_spec[0] = 0;
- strcat (constructed_spec, "%");
- if (spec->plus_flag)
- strcat (constructed_spec, "+");
- if (spec->space_flag)
- strcat (constructed_spec, " ");
- if (spec->number_flag)
- strcat (constructed_spec, "#");
+ *p++ = '%';
+ if (spec->plus_flag) *p++ = '+';
+ if (spec->space_flag) *p++ = ' ';
+ if (spec->number_flag) *p++ = '#';
+ if (spec->minus_flag) *p++ = '-';
+ if (spec->zero_flag) *p++ = '0';
+
+ if (spec->minwidth >= 0)
+ p = long_to_string (p, spec->minwidth);
if (spec->precision >= 0)
{
- strcat (constructed_spec, ".");
- long_to_string (constructed_spec + strlen (constructed_spec),
- spec->precision);
+ *p++ = '.';
+ p = long_to_string (p, spec->precision);
}
-
- /* sprintf the mofo */
- /* we have to use separate calls to sprintf(), rather than
- a single big conditional, because of the different types
- of the arguments */
+
if (strchr (double_converters, ch))
{
- sprintf (constructed_spec + strlen (constructed_spec),
- "%c", ch);
+ *p++ = ch;
+ *p++ = '\0';
sprintf (text_to_print, constructed_spec, arg.d);
}
- else if (strchr (unsigned_int_converters, ch))
- {
- sprintf (constructed_spec + strlen (constructed_spec),
- "%c", ch);
- if (spec->l_flag)
- sprintf (text_to_print, constructed_spec, arg.ul);
- else
- sprintf (text_to_print, constructed_spec, arg.ui);
- }
else
{
- if (spec->zero_flag && spec->minwidth)
- sprintf (constructed_spec + strlen (constructed_spec),
- "0%d%c", spec->minwidth, ch);
+ *p++ = 'l'; /* Always use longs with sprintf() */
+ *p++ = ch;
+ *p++ = '\0';
+
+ if (strchr (unsigned_int_converters, ch))
+ sprintf (text_to_print, constructed_spec, arg.ul);
else
- sprintf (constructed_spec + strlen (constructed_spec),
- "%c", ch);
- if (spec->l_flag)
sprintf (text_to_print, constructed_spec, arg.l);
- else
- sprintf (text_to_print, constructed_spec, arg.i);
}
doprnt_1 (stream, (Bufbyte *) text_to_print,
- strlen (text_to_print),
- spec->minwidth, -1, spec->minus_flag, spec->zero_flag);
+ strlen (text_to_print), 0, -1, 0, 0);
}
}
}
projects / chise / xemacs-chise.git.1 / blobdiff