#include <config.h>
#include <stdio.h>
#include <ctype.h>
+
+#ifdef STDC_HEADERS
+#include <float.h>
+#endif
+
#include "lisp.h"
+#ifndef DBL_MAX_10_EXP
+#define DBL_MAX_10_EXP 308 /* IEEE double */
+#endif
+
+/* Since we use the macro CHAR_HEAD_P, we have to include this, but
+ don't have to include others because CHAR_HEAD_P does not contains
+ another macro. */
+#include "charset.h"
+
extern long *xmalloc (), *xrealloc ();
static int doprnt1 ();
String arguments are passed as C strings.
Integers are passed as C integers. */
+int
doprnt (buffer, bufsize, format, format_end, nargs, args)
char *buffer;
register int bufsize;
/* Like doprnt except that strings in ARGS are passed
as Lisp_Object. */
+int
doprnt_lisp (buffer, bufsize, format, format_end, nargs, args)
char *buffer;
register int bufsize;
register char *bufptr = buffer; /* Pointer into output buffer.. */
/* Use this for sprintf unless we need something really big. */
- char tembuf[100];
+ char tembuf[DBL_MAX_10_EXP + 100];
/* Size of sprintf_buffer. */
- int size_allocated = 100;
+ int size_allocated = sizeof (tembuf);
/* Buffer to use for sprintf. Either tembuf or same as BIG_BUFFER. */
char *sprintf_buffer = tembuf;
char *fmtcpy;
int minlen;
int size; /* Field width factor; e.g., %90d */
- char charbuf[2]; /* Used for %c. */
+ unsigned char charbuf[5]; /* Used for %c. */
if (format_end == 0)
format_end = format + strlen (format);
{
if (*fmt == '%') /* Check for a '%' character */
{
- int size_bound;
+ int size_bound = 0;
+ int width; /* Columns occupied by STRING. */
fmt++;
/* Copy this one %-spec into fmtcpy. */
while (1)
{
*string++ = *fmt;
- if (! (*fmt >= '0' && *fmt <= '9')
- && *fmt != '-' && *fmt != ' '&& *fmt != '.')
+ if ('0' <= *fmt && *fmt <= '9')
+ {
+ /* Get an idea of how much space we might need.
+ This might be a field width or a precision; e.g.
+ %1.1000f and %1000.1f both might need 1000+ bytes.
+ Parse the width or precision, checking for overflow. */
+ int n = *fmt - '0';
+ while ('0' <= fmt[1] && fmt[1] <= '9')
+ {
+ if (n * 10 / 10 != n
+ || (n = n * 10 + (fmt[1] - '0')) < 0)
+ error ("Format width or precision too large");
+ *string++ = *++fmt;
+ }
+
+ if (size_bound < n)
+ size_bound = n;
+ }
+ else if (*fmt == '-' || *fmt == ' ' || *fmt == '.')
+ ;
+ else
break;
fmt++;
}
*string = 0;
- /* Get an idea of how much space we might need. */
- size_bound = atoi (&fmtcpy[1]);
- /* Avoid pitfall of negative "size" parameter ("%-200d"). */
- if (size_bound < 0)
- size_bound = -size_bound;
- size_bound += 50;
+ /* Make the size bound large enough to handle floating point formats
+ with large numbers. */
+ size_bound += DBL_MAX_10_EXP + 50;
- if (size_bound > (((unsigned) 1) << (BITS_PER_INT - 1)))
- error ("Format padding too large");
+ if (size_bound < 0)
+ error ("Format width or precision too large");
/* Make sure we have that much. */
if (size_bound > size_allocated)
minlen = atoi (&fmtcpy[1]);
if (lispstrings)
{
- string = (char *) XSTRING (((Lisp_Object *) args)[cnt])->data;
- tem = XSTRING (((Lisp_Object *) args)[cnt])->size;
+ string = (char *) ((struct Lisp_String *)args[cnt])->data;
+ tem = ((struct Lisp_String *)args[cnt])->size;
cnt++;
}
else
string = args[cnt++];
tem = strlen (string);
}
+ width = strwidth (string, tem);
goto doit1;
/* Copy string into final output, truncating if no room. */
doit:
- tem = strlen (string);
+ /* Coming here means STRING contains ASCII only. */
+ width = tem = strlen (string);
doit1:
+ /* We have already calculated:
+ TEM -- length of STRING,
+ WIDTH -- columns occupied by STRING when displayed, and
+ MINLEN -- minimum columns of the output. */
if (minlen > 0)
{
- while (minlen > tem && bufsize > 0)
+ while (minlen > width && bufsize > 0)
{
*bufptr++ = ' ';
bufsize--;
minlen = 0;
}
if (tem > bufsize)
- tem = bufsize;
- bcopy (string, bufptr, tem);
+ {
+ /* Truncate the string at character boundary. */
+ tem = bufsize;
+ while (!CHAR_HEAD_P (string[tem - 1])) tem--;
+ bcopy (string, bufptr, tem);
+ /* We must calculate WIDTH again. */
+ width = strwidth (bufptr, tem);
+ }
+ else
+ bcopy (string, bufptr, tem);
bufptr += tem;
bufsize -= tem;
if (minlen < 0)
{
- while (minlen < - tem && bufsize > 0)
+ while (minlen < - width && bufsize > 0)
{
*bufptr++ = ' ';
bufsize--;
case 'c':
if (cnt == nargs)
error ("not enough arguments for format string");
- *charbuf = (EMACS_INT) args[cnt++];
- string = charbuf;
- tem = 1;
+ tem = CHAR_STRING ((EMACS_INT) args[cnt], charbuf, string);
+ cnt++;
+ string[tem] = 0;
+ width = strwidth (string, tem);
if (fmtcpy[1] != 'c')
minlen = atoi (&fmtcpy[1]);
goto doit1;
fmt--; /* Drop thru and this % will be treated as normal */
}
}
- *bufptr++ = *fmt++; /* Just some characters; Copy 'em */
- bufsize--;
+
+ {
+ /* Just some character; Copy it if the whole multi-byte form
+ fit in the buffer. */
+ char *save_bufptr = bufptr;
+
+ do { *bufptr++ = *fmt++; }
+ while (--bufsize > 0 && !CHAR_HEAD_P (*fmt));
+ if (!CHAR_HEAD_P (*fmt))
+ {
+ bufptr = save_bufptr;
+ break;
+ }
+ }
};
/* If we had to malloc something, free it. */
HCoop / bpt / emacs.git / blobdiff