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-rw-r--r--src/message.c738
1 files changed, 714 insertions, 24 deletions
diff --git a/src/message.c b/src/message.c
index 8b4a2b3f5..7efe28ca4 100644
--- a/src/message.c
+++ b/src/message.c
@@ -313,6 +313,15 @@ _RTLENTRYF
smsg_attr __ARGS((int, char_u *, long, long, long,
long, long, long, long, long, long, long));
+int vim_snprintf __ARGS((char *, size_t, char *, long, long, long,
+ long, long, long, long, long, long, long));
+
+/*
+ * smsg(str, arg, ...) is like using sprintf(buf, str, arg, ...) and then
+ * calling msg(buf).
+ * The buffer used is IObuff, the message is truncated at IOSIZE.
+ */
+
/* VARARGS */
int
#ifdef __BORLANDC__
@@ -335,12 +344,16 @@ smsg_attr(attr, s, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10)
char_u *s;
long a1, a2, a3, a4, a5, a6, a7, a8, a9, a10;
{
- sprintf((char *)IObuff, (char *)s, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10);
+ vim_snprintf((char *)IObuff, IOSIZE, (char *)s,
+ a1, a2, a3, a4, a5, a6, a7, a8, a9, a10);
return msg_attr(IObuff, attr);
}
# else /* HAVE_STDARG_H */
+int vim_snprintf(char *str, size_t str_m, char *fmt, ...);
+static int vim_vsnprintf(char *str, size_t str_m, char *fmt, va_list ap);
+
int
#ifdef __BORLANDC__
_RTLENTRYF
@@ -350,11 +363,7 @@ smsg(char_u *s, ...)
va_list arglist;
va_start(arglist, s);
-# ifdef HAVE_VSNPRINTF
- vsnprintf((char *)IObuff, IOSIZE, (char *)s, arglist);
-# else
- vsprintf((char *)IObuff, (char *)s, arglist);
-# endif
+ vim_vsnprintf((char *)IObuff, IOSIZE, (char *)s, arglist);
va_end(arglist);
return msg(IObuff);
}
@@ -368,11 +377,7 @@ smsg_attr(int attr, char_u *s, ...)
va_list arglist;
va_start(arglist, s);
-# ifdef HAVE_VSNPRINTF
- vsnprintf((char *)IObuff, IOSIZE, (char *)s, arglist);
-# else
- vsprintf((char *)IObuff, (char *)s, arglist);
-# endif
+ vim_vsnprintf((char *)IObuff, IOSIZE, (char *)s, arglist);
va_end(arglist);
return msg_attr(IObuff, attr);
}
@@ -645,18 +650,7 @@ emsg3(s, a1, a2)
#endif
)
return TRUE; /* no error messages at the moment */
-
- /* Check for NULL strings (just in case) */
- if (a1 == NULL)
- a1 = (char_u *)"[NULL]";
- if (a2 == NULL)
- a2 = (char_u *)"[NULL]";
-
- /* Check for very long strings (can happen with ":help ^A<CR>"). */
- if (STRLEN(s) + STRLEN(a1) + STRLEN(a2) >= (size_t)IOSIZE)
- a1 = a2 = (char_u *)_("[string too long]");
-
- sprintf((char *)IObuff, (char *)s, (char *)a1, (char *)a2);
+ vim_snprintf((char *)IObuff, IOSIZE, (char *)s, (char *)a1, (char *)a2);
return emsg(IObuff);
}
@@ -674,7 +668,7 @@ emsgn(s, n)
#endif
)
return TRUE; /* no error messages at the moment */
- sprintf((char *)IObuff, (char *)s, n);
+ vim_snprintf((char *)IObuff, IOSIZE, (char *)s, n);
return emsg(IObuff);
}
@@ -3205,3 +3199,699 @@ do_browse(flags, title, dflt, ext, initdir, filter, buf)
return fname;
}
#endif
+
+/*
+ * This code was included to provide a portable vsnprintf() and snprintf().
+ * Some systems may provide their own, but we always use these for
+ * consistency.
+ *
+ * This code is based on snprintf.c - a portable implementation of snprintf
+ * by Mark Martinec <mark.martinec@ijs.si>, Version 2.2, 2000-10-06.
+ * It was heavely modified to fit in Vim.
+ * The original code, including useful comments, can be found here:
+ * http://www.ijs.si/software/snprintf/
+ *
+ * This snprintf() only supports the following conversion specifiers:
+ * s, c, d, u, o, x, X, p (and synonyms: i, D, U, O - see below)
+ * with flags: '-', '+', ' ', '0' and '#'.
+ * An asterisk is supported for field width as well as precision.
+ *
+ * Length modifiers 'h' (short int) and 'l' (long int) are supported.
+ * 'll' (long long int) is not supported.
+ *
+ * It is permitted for str_m to be zero, and it is permitted to specify NULL
+ * pointer for resulting string argument if str_m is zero (as per ISO C99).
+ *
+ * The return value is the number of characters which would be generated
+ * for the given input, excluding the trailing null. If this value
+ * is greater or equal to str_m, not all characters from the result
+ * have been stored in str, output bytes beyond the (str_m-1) -th character
+ * are discarded. If str_m is greater than zero it is guaranteed
+ * the resulting string will be null-terminated.
+ */
+
+/*
+ * When va_list is not supported we only define vim_snprintf().
+ */
+
+/* When generating prototypes all of this is skipped, cproto doesn't
+ * understand this. */
+#ifndef PROTO
+# ifdef HAVE_STDARG_H
+ int
+vim_snprintf(char *str, size_t str_m, char *fmt, ...)
+{
+ va_list ap;
+ int str_l;
+
+ va_start(ap, fmt);
+ str_l = vim_vsnprintf(str, str_m, fmt, ap);
+ va_end(ap);
+ return str_l;
+}
+
+ static int
+vim_vsnprintf(str, str_m, fmt, ap)
+# else
+ /* clumsy way to work around missing va_list */
+# define get_a_arg(i) (i == 1 ? a1 : i == 2 ? a2 : i == 3 ? a3 : i == 4 ? a4 : i == 5 ? a5 : i == 6 ? a6 : i == 7 ? a7 : i == 8 ? a8 : i == 9 ? a9 : a10)
+
+/* VARARGS */
+ int
+#ifdef __BORLANDC__
+_RTLENTRYF
+#endif
+vim_snprintf(str, str_m, fmt, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10)
+# endif
+ char *str;
+ size_t str_m;
+ char *fmt;
+# ifdef HAVE_STDARG_H
+ va_list ap;
+# else
+ long a1, a2, a3, a4, a5, a6, a7, a8, a9, a10;
+# endif
+{
+ size_t str_l = 0;
+ char *p = fmt;
+# ifndef HAVE_STDARG_H
+ int arg_idx = 1;
+# endif
+
+ if (p == NULL)
+ p = "";
+ while (*p != NUL)
+ {
+ if (*p != '%')
+ {
+ char *q = strchr(p + 1, '%');
+ size_t n = (q == NULL) ? STRLEN(p) : (q - p);
+
+ if (str_l < str_m)
+ {
+ size_t avail = str_m - str_l;
+
+ mch_memmove(str + str_l, p, n > avail ? avail : n);
+ }
+ p += n;
+ str_l += n;
+ }
+ else
+ {
+ size_t min_field_width = 0, precision = 0;
+ int zero_padding = 0, precision_specified = 0, justify_left = 0;
+ int alternate_form = 0, force_sign = 0;
+
+ /* If both the ' ' and '+' flags appear, the ' ' flag should be
+ * ignored. */
+ int space_for_positive = 1;
+
+ /* allowed values: \0, h, l, L */
+ char length_modifier = '\0';
+
+ /* temporary buffer for simple numeric->string conversion */
+ char tmp[32];
+
+ /* string address in case of string argument */
+ char *str_arg;
+
+ /* natural field width of arg without padding and sign */
+ size_t str_arg_l;
+
+ /* unsigned char argument value - only defined for c conversion.
+ * N.B. standard explicitly states the char argument for the c
+ * conversion is unsigned */
+ unsigned char uchar_arg;
+
+ /* number of zeros to be inserted for numeric conversions as
+ * required by the precision or minimal field width */
+ size_t number_of_zeros_to_pad = 0;
+
+ /* index into tmp where zero padding is to be inserted */
+ size_t zero_padding_insertion_ind = 0;
+
+ /* current conversion specifier character */
+ char fmt_spec = '\0';
+
+ str_arg = NULL;
+ p++; /* skip '%' */
+
+ /* parse flags */
+ while (*p == '0' || *p == '-' || *p == '+' || *p == ' '
+ || *p == '#' || *p == '\'')
+ {
+ switch (*p)
+ {
+ case '0': zero_padding = 1; break;
+ case '-': justify_left = 1; break;
+ case '+': force_sign = 1; space_for_positive = 0; break;
+ case ' ': force_sign = 1;
+ /* If both the ' ' and '+' flags appear, the ' '
+ * flag should be ignored */
+ break;
+ case '#': alternate_form = 1; break;
+ case '\'': break;
+ }
+ p++;
+ }
+ /* If the '0' and '-' flags both appear, the '0' flag should be
+ * ignored. */
+
+ /* parse field width */
+ if (*p == '*')
+ {
+ int j;
+
+ p++;
+#ifndef HAVE_STDARG_H
+ j = get_a_arg(arg_idx);
+ ++arg_idx;
+#else
+ j = va_arg(ap, int);
+#endif
+ if (j >= 0)
+ min_field_width = j;
+ else
+ {
+ min_field_width = -j;
+ justify_left = 1;
+ }
+ }
+ else if (VIM_ISDIGIT((int)(*p)))
+ {
+ /* size_t could be wider than unsigned int; make sure we treat
+ * argument like common implementations do */
+ unsigned int uj = *p++ - '0';
+
+ while (VIM_ISDIGIT((int)(*p)))
+ uj = 10 * uj + (unsigned int)(*p++ - '0');
+ min_field_width = uj;
+ }
+
+ /* parse precision */
+ if (*p == '.')
+ {
+ p++;
+ precision_specified = 1;
+ if (*p == '*')
+ {
+ int j;
+
+#ifndef HAVE_STDARG_H
+ j = get_a_arg(arg_idx);
+ ++arg_idx;
+#else
+ j = va_arg(ap, int);
+#endif
+ p++;
+ if (j >= 0)
+ precision = j;
+ else
+ {
+ precision_specified = 0;
+ precision = 0;
+ }
+ }
+ else if (VIM_ISDIGIT((int)(*p)))
+ {
+ /* size_t could be wider than unsigned int; make sure we
+ * treat argument like common implementations do */
+ unsigned int uj = *p++ - '0';
+
+ while (VIM_ISDIGIT((int)(*p)))
+ uj = 10 * uj + (unsigned int)(*p++ - '0');
+ precision = uj;
+ }
+ }
+
+ /* parse 'h', 'l' and 'll' length modifiers */
+ if (*p == 'h' || *p == 'l')
+ {
+ length_modifier = *p;
+ p++;
+ if (length_modifier == 'l' && *p == 'l')
+ {
+ /* double l = long long */
+ length_modifier = 'l'; /* treat it as a single 'l' */
+ p++;
+ }
+ }
+ fmt_spec = *p;
+
+ /* common synonyms: */
+ switch (fmt_spec)
+ {
+ case 'i': fmt_spec = 'd'; break;
+ case 'D': fmt_spec = 'd'; length_modifier = 'l'; break;
+ case 'U': fmt_spec = 'u'; length_modifier = 'l'; break;
+ case 'O': fmt_spec = 'o'; length_modifier = 'l'; break;
+ default: break;
+ }
+
+ /* get parameter value, do initial processing */
+ switch (fmt_spec)
+ {
+ /* '%' and 'c' behave similar to 's' regarding flags and field
+ * widths */
+ case '%':
+ case 'c':
+ case 's':
+ length_modifier = '\0';
+ zero_padding = 0; /* turn zero padding off for string
+ conversions */
+ str_arg_l = 1;
+ switch (fmt_spec)
+ {
+ case '%':
+ str_arg = p;
+ break;
+
+ case 'c':
+ {
+ int j;
+#ifndef HAVE_STDARG_H
+ j = get_a_arg(arg_idx);
+ ++arg_idx;
+#else
+ j = va_arg(ap, int);
+#endif
+ /* standard demands unsigned char */
+ uchar_arg = (unsigned char)j;
+ str_arg = (char *)&uchar_arg;
+ break;
+ }
+
+ case 's':
+#ifndef HAVE_STDARG_H
+ str_arg = (char *)get_a_arg(arg_idx);
+ ++arg_idx;
+#else
+ str_arg = va_arg(ap, char *);
+#endif
+ if (str_arg == NULL)
+ {
+ str_arg = "[NULL]";
+ str_arg_l = 6;
+ }
+ /* make sure not to address string beyond the specified
+ * precision !!! */
+ else if (!precision_specified)
+ str_arg_l = strlen(str_arg);
+ /* truncate string if necessary as requested by precision */
+ else if (precision == 0)
+ str_arg_l = 0;
+ else
+ {
+ /* memchr on HP does not like n > 2^31 !!! */
+ char *q = memchr(str_arg, '\0',
+ precision <= 0x7fffffff ? precision
+ : 0x7fffffff);
+ str_arg_l = (q == NULL) ? precision : q - str_arg;
+ }
+ break;
+
+ default:
+ break;
+ }
+ break;
+
+ case 'd': case 'u': case 'o': case 'x': case 'X': case 'p':
+ {
+ /* NOTE: the u, o, x, X and p conversion specifiers
+ * imply the value is unsigned; d implies a signed
+ * value */
+
+ /* 0 if numeric argument is zero (or if pointer is
+ * NULL for 'p'), +1 if greater than zero (or nonzero
+ * for unsigned arguments), -1 if negative (unsigned
+ * argument is never negative) */
+ int arg_sign = 0;
+
+ /* only defined for length modifier h, or for no
+ * length modifiers */
+ int int_arg = 0;
+ unsigned int uint_arg = 0;
+
+ /* only defined for length modifier l */
+ long int long_arg = 0;
+ unsigned long int ulong_arg = 0;
+
+ /* pointer argument value -only defined for p
+ * conversion */
+ void *ptr_arg = NULL;
+
+ if (fmt_spec == 'p')
+ {
+ length_modifier = '\0';
+#ifndef HAVE_STDARG_H
+ ptr_arg = (void *)get_a_arg(arg_idx);
+ ++arg_idx;
+#else
+ ptr_arg = va_arg(ap, void *);
+#endif
+ if (ptr_arg != NULL)
+ arg_sign = 1;
+ }
+ else if (fmt_spec == 'd')
+ {
+ /* signed */
+ switch (length_modifier)
+ {
+ case '\0':
+ case 'h':
+ /* It is non-portable to specify a second argument
+ * of char or short to va_arg, because arguments
+ * seen by the called function are not char or
+ * short. C converts char and short arguments to
+ * int before passing them to a function. */
+#ifndef HAVE_STDARG_H
+ int_arg = get_a_arg(arg_idx);
+ ++arg_idx;
+#else
+ int_arg = va_arg(ap, int);
+#endif
+ if (int_arg > 0)
+ arg_sign = 1;
+ else if (int_arg < 0)
+ arg_sign = -1;
+ break;
+ case 'l':
+#ifndef HAVE_STDARG_H
+ long_arg = get_a_arg(arg_idx);
+ ++arg_idx;
+#else
+ long_arg = va_arg(ap, long int);
+#endif
+ if (long_arg > 0)
+ arg_sign = 1;
+ else if (long_arg < 0)
+ arg_sign = -1;
+ break;
+ }
+ }
+ else
+ {
+ /* unsigned */
+ switch (length_modifier)
+ {
+ case '\0':
+ case 'h':
+#ifndef HAVE_STDARG_H
+ uint_arg = get_a_arg(arg_idx);
+ ++arg_idx;
+#else
+ uint_arg = va_arg(ap, unsigned int);
+#endif
+ if (uint_arg != 0)
+ arg_sign = 1;
+ break;
+ case 'l':
+#ifndef HAVE_STDARG_H
+ ulong_arg = get_a_arg(arg_idx);
+ ++arg_idx;
+#else
+ ulong_arg = va_arg(ap, unsigned long int);
+#endif
+ if (ulong_arg != 0)
+ arg_sign = 1;
+ break;
+ }
+ }
+
+ str_arg = tmp;
+ str_arg_l = 0;
+
+ /* NOTE:
+ * For d, i, u, o, x, and X conversions, if precision is
+ * specified, the '0' flag should be ignored. This is so
+ * with Solaris 2.6, Digital UNIX 4.0, HPUX 10, Linux,
+ * FreeBSD, NetBSD; but not with Perl.
+ */
+ if (precision_specified)
+ zero_padding = 0;
+ if (fmt_spec == 'd')
+ {
+ if (force_sign && arg_sign >= 0)
+ tmp[str_arg_l++] = space_for_positive ? ' ' : '+';
+ /* leave negative numbers for sprintf to handle, to
+ * avoid handling tricky cases like (short int)-32768 */
+ }
+ else if (alternate_form)
+ {
+ if (arg_sign != 0
+ && (fmt_spec == 'x' || fmt_spec == 'X') )
+ {
+ tmp[str_arg_l++] = '0';
+ tmp[str_arg_l++] = fmt_spec;
+ }
+ /* alternate form should have no effect for p
+ * conversion, but ... */
+ }
+
+ zero_padding_insertion_ind = str_arg_l;
+ if (!precision_specified)
+ precision = 1; /* default precision is 1 */
+ if (precision == 0 && arg_sign == 0)
+ {
+ /* When zero value is formatted with an explicit
+ * precision 0, the resulting formatted string is
+ * empty (d, i, u, o, x, X, p). */
+ }
+ else
+ {
+ char f[5];
+ int f_l = 0;
+
+ /* construct a simple format string for sprintf */
+ f[f_l++] = '%';
+ if (!length_modifier)
+ ;
+ else if (length_modifier == '2')
+ {
+ f[f_l++] = 'l';
+ f[f_l++] = 'l';
+ }
+ else
+ f[f_l++] = length_modifier;
+ f[f_l++] = fmt_spec;
+ f[f_l++] = '\0';
+
+ if (fmt_spec == 'p')
+ str_arg_l += sprintf(tmp + str_arg_l, f, ptr_arg);
+ else if (fmt_spec == 'd')
+ {
+ /* signed */
+ switch (length_modifier)
+ {
+ case '\0':
+ case 'h': str_arg_l += sprintf(
+ tmp + str_arg_l, f, int_arg);
+ break;
+ case 'l': str_arg_l += sprintf(
+ tmp + str_arg_l, f, long_arg);
+ break;
+ }
+ }
+ else
+ {
+ /* unsigned */
+ switch (length_modifier)
+ {
+ case '\0':
+ case 'h': str_arg_l += sprintf(
+ tmp + str_arg_l, f, uint_arg);
+ break;
+ case 'l': str_arg_l += sprintf(
+ tmp + str_arg_l, f, ulong_arg);
+ break;
+ }
+ }
+
+ /* include the optional minus sign and possible
+ * "0x" in the region before the zero padding
+ * insertion point */
+ if (zero_padding_insertion_ind < str_arg_l
+ && tmp[zero_padding_insertion_ind] == '-')
+ zero_padding_insertion_ind++;
+ if (zero_padding_insertion_ind + 1 < str_arg_l
+ && tmp[zero_padding_insertion_ind] == '0'
+ && (tmp[zero_padding_insertion_ind + 1] == 'x'
+ || tmp[zero_padding_insertion_ind + 1] == 'X'))
+ zero_padding_insertion_ind += 2;
+ }
+
+ {
+ size_t num_of_digits = str_arg_l
+ - zero_padding_insertion_ind;
+
+ if (alternate_form && fmt_spec == 'o'
+ /* unless zero is already the first
+ * character */
+ && !(zero_padding_insertion_ind < str_arg_l
+ && tmp[zero_padding_insertion_ind] == '0'))
+ {
+ /* assure leading zero for alternate-form
+ * octal numbers */
+ if (!precision_specified
+ || precision < num_of_digits + 1)
+ {
+ /* precision is increased to force the
+ * first character to be zero, except if a
+ * zero value is formatted with an
+ * explicit precision of zero */
+ precision = num_of_digits + 1;
+ precision_specified = 1;
+ }
+ }
+ /* zero padding to specified precision? */
+ if (num_of_digits < precision)
+ number_of_zeros_to_pad = precision - num_of_digits;
+ }
+ /* zero padding to specified minimal field width? */
+ if (!justify_left && zero_padding)
+ {
+ int n = min_field_width - (str_arg_l
+ + number_of_zeros_to_pad);
+ if (n > 0)
+ number_of_zeros_to_pad += n;
+ }
+ break;
+ }
+
+ default:
+ /* unrecognized conversion specifier, keep format string
+ * as-is */
+ zero_padding = 0; /* turn zero padding off for non-numeric
+ convers. */
+ justify_left = 1;
+ min_field_width = 0; /* reset flags */
+
+ /* discard the unrecognized conversion, just keep *
+ * the unrecognized conversion character */
+ str_arg = p;
+ str_arg_l = 0;
+ if (*p != NUL)
+ str_arg_l++; /* include invalid conversion specifier
+ unchanged if not at end-of-string */
+ break;
+ }
+
+ if (*p != NUL)
+ p++; /* step over the just processed conversion specifier */
+
+ /* insert padding to the left as requested by min_field_width;
+ * this does not include the zero padding in case of numerical
+ * conversions*/
+ if (!justify_left)
+ {
+ /* left padding with blank or zero */
+ int n = min_field_width - (str_arg_l + number_of_zeros_to_pad);
+
+ if (n > 0)
+ {
+ if (str_l < str_m)
+ {
+ size_t avail = str_m - str_l;
+
+ vim_memset(str + str_l, zero_padding ? '0' : ' ',
+ n > avail ? avail : n);
+ }
+ str_l += n;
+ }
+ }
+
+ /* zero padding as requested by the precision or by the minimal
+ * field width for numeric conversions required? */
+ if (number_of_zeros_to_pad <= 0)
+ {
+ /* will not copy first part of numeric right now, *
+ * force it to be copied later in its entirety */
+ zero_padding_insertion_ind = 0;
+ }
+ else
+ {
+ /* insert first part of numerics (sign or '0x') before zero
+ * padding */
+ int n = zero_padding_insertion_ind;
+
+ if (n > 0)
+ {
+ if (str_l < str_m)
+ {
+ size_t avail = str_m - str_l;
+
+ mch_memmove(str + str_l, str_arg,
+ n > avail ? avail : n);
+ }
+ str_l += n;
+ }
+
+ /* insert zero padding as requested by the precision or min
+ * field width */
+ n = number_of_zeros_to_pad;
+ if (n > 0)
+ {
+ if (str_l < str_m)
+ {
+ size_t avail = str_m-str_l;
+
+ vim_memset(str + str_l, '0', n > avail ? avail : n);
+ }
+ str_l += n;
+ }
+ }
+
+ /* insert formatted string
+ * (or as-is conversion specifier for unknown conversions) */
+ {
+ int n = str_arg_l - zero_padding_insertion_ind;
+
+ if (n > 0)
+ {
+ if (str_l < str_m)
+ {
+ size_t avail = str_m - str_l;
+
+ mch_memmove(str + str_l,
+ str_arg + zero_padding_insertion_ind,
+ n > avail ? avail : n);
+ }
+ str_l += n;
+ }
+ }
+
+ /* insert right padding */
+ if (justify_left)
+ {
+ /* right blank padding to the field width */
+ int n = min_field_width - (str_arg_l + number_of_zeros_to_pad);
+
+ if (n > 0)
+ {
+ if (str_l < str_m)
+ {
+ size_t avail = str_m - str_l;
+
+ vim_memset(str + str_l, ' ', n > avail ? avail : n);
+ }
+ str_l += n;
+ }
+ }
+ }
+ }
+
+ if (str_m > 0)
+ {
+ /* make sure the string is null-terminated even at the expense of
+ * overwriting the last character (shouldn't happen, but just in case)
+ * */
+ str[str_l <= str_m - 1 ? str_l : str_m - 1] = '\0';
+ }
+
+ /* Return the number of characters formatted (excluding trailing null
+ * character), that is, the number of characters that would have been
+ * written to the buffer if it were large enough. */
+ return (int)str_l;
+}
+
+#endif /* PROTO */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-17 02:38:48 +0000