| /* Like vsprintf but provides a pointer to malloc'd storage, which must |
| be freed by the caller. |
| Copyright (C) 1994 Free Software Foundation, Inc. |
| |
| This file is part of the libiberty library. |
| Libiberty is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Library General Public |
| License as published by the Free Software Foundation; either |
| version 2 of the License, or (at your option) any later version. |
| |
| Libiberty is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Library General Public License for more details. |
| |
| You should have received a copy of the GNU Library General Public |
| License along with libiberty; see the file COPYING.LIB. If |
| not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| #include <ansidecl.h> |
| #ifdef ANSI_PROTOTYPES |
| #include <stdarg.h> |
| #else |
| #include <varargs.h> |
| #endif |
| #include <stdio.h> |
| #include <string.h> |
| #ifdef HAVE_STDLIB_H |
| #include <stdlib.h> |
| #else |
| extern unsigned long strtoul (); |
| extern PTR malloc (); |
| #endif |
| #include "libiberty.h" |
| |
| #ifdef TEST |
| int global_total_width; |
| #endif |
| |
| |
| static int int_vasprintf PARAMS ((char **, const char *, va_list *)); |
| |
| static int |
| int_vasprintf (result, format, args) |
| char **result; |
| const char *format; |
| va_list *args; |
| { |
| const char *p = format; |
| /* Add one to make sure that it is never zero, which might cause malloc |
| to return NULL. */ |
| int total_width = strlen (format) + 1; |
| va_list ap; |
| |
| memcpy ((PTR) &ap, (PTR) args, sizeof (va_list)); |
| |
| while (*p != '\0') |
| { |
| if (*p++ == '%') |
| { |
| while (strchr ("-+ #0", *p)) |
| ++p; |
| if (*p == '*') |
| { |
| ++p; |
| total_width += abs (va_arg (ap, int)); |
| } |
| else |
| total_width += strtoul (p, (char **) &p, 10); |
| if (*p == '.') |
| { |
| ++p; |
| if (*p == '*') |
| { |
| ++p; |
| total_width += abs (va_arg (ap, int)); |
| } |
| else |
| total_width += strtoul (p, (char **) &p, 10); |
| } |
| while (strchr ("hlL", *p)) |
| ++p; |
| /* Should be big enough for any format specifier except %s and floats. */ |
| total_width += 30; |
| switch (*p) |
| { |
| case 'd': |
| case 'i': |
| case 'o': |
| case 'u': |
| case 'x': |
| case 'X': |
| case 'c': |
| (void) va_arg (ap, int); |
| break; |
| case 'f': |
| case 'e': |
| case 'E': |
| case 'g': |
| case 'G': |
| (void) va_arg (ap, double); |
| /* Since an ieee double can have an exponent of 307, we'll |
| make the buffer wide enough to cover the gross case. */ |
| total_width += 307; |
| break; |
| case 's': |
| total_width += strlen (va_arg (ap, char *)); |
| break; |
| case 'p': |
| case 'n': |
| (void) va_arg (ap, char *); |
| break; |
| } |
| p++; |
| } |
| } |
| #ifdef TEST |
| global_total_width = total_width; |
| #endif |
| *result = malloc (total_width); |
| if (*result != NULL) |
| return vsprintf (*result, format, *args); |
| else |
| return 0; |
| } |
| |
| int |
| vasprintf (result, format, args) |
| char **result; |
| const char *format; |
| #if defined (_BSD_VA_LIST_) && defined (__FreeBSD__) |
| _BSD_VA_LIST_ args; |
| #else |
| va_list args; |
| #endif |
| { |
| return int_vasprintf (result, format, &args); |
| } |
| |
| #ifdef TEST |
| static void checkit PARAMS ((const char *, ...)); |
| |
| static void |
| checkit VPARAMS ((const char* format, ...)) |
| { |
| va_list args; |
| char *result; |
| #ifndef ANSI_PROTOTYPES |
| const char *format; |
| #endif |
| |
| VA_START (args, format); |
| |
| #ifndef ANSI_PROTOTYPES |
| format = va_arg (args, const char *); |
| #endif |
| |
| vasprintf (&result, format, args); |
| if (strlen (result) < (size_t) global_total_width) |
| printf ("PASS: "); |
| else |
| printf ("FAIL: "); |
| printf ("%d %s\n", global_total_width, result); |
| } |
| |
| extern int main PARAMS ((void)); |
| |
| int |
| main () |
| { |
| checkit ("%d", 0x12345678); |
| checkit ("%200d", 5); |
| checkit ("%.300d", 6); |
| checkit ("%100.150d", 7); |
| checkit ("%s", "jjjjjjjjjiiiiiiiiiiiiiiioooooooooooooooooppppppppppppaa\n\ |
| 777777777777777777333333333333366666666666622222222222777777777777733333"); |
| checkit ("%f%s%d%s", 1.0, "foo", 77, "asdjffffffffffffffiiiiiiiiiiixxxxx"); |
| |
| return 0; |
| } |
| #endif /* TEST */ |