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authorAlain Magloire <alainm@gnu.org>2001-04-14 20:16:22 +0000
committerAlain Magloire <alainm@gnu.org>2001-04-14 20:16:22 +0000
commit2f13ebfeddc73927f65ea8477049b4160d69101d (patch)
tree478495ab3e8a1f93718c7affd45962f7abf745f2 /lib/vasprintf.c
parentfdd1855d418748f65b7dc52aeaa418e4c00a6688 (diff)
downloadmailutils-2f13ebfeddc73927f65ea8477049b4160d69101d.tar.gz
mailutils-2f13ebfeddc73927f65ea8477049b4160d69101d.tar.bz2
Replace for loosing platforms.
Diffstat (limited to 'lib/vasprintf.c')
-rw-r--r--lib/vasprintf.c193
1 files changed, 193 insertions, 0 deletions
diff --git a/lib/vasprintf.c b/lib/vasprintf.c
new file mode 100644
index 000000000..d06f2a55f
--- /dev/null
+++ b/lib/vasprintf.c
@@ -0,0 +1,193 @@
+/* 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 program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+This program 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; 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 <stdio.h>
+#include <string.h>
+
+#if __STDC__
+# include <stdarg.h>
+#else
+# include <varargs.h>
+#endif
+
+#ifdef TEST
+int global_total_width;
+#endif
+
+unsigned long strtoul ();
+char *malloc ();
+
+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 (&ap, 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, &p, 10);
+ if (*p == '.')
+ {
+ ++p;
+ if (*p == '*')
+ {
+ ++p;
+ total_width += abs (va_arg (ap, int));
+ }
+ else
+ total_width += strtoul (p, &p, 10);
+ }
+ while (strchr ("hlL", *p))
+ ++p;
+ /* Should be big enough for any format specifier except %s. */
+ 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);
+ break;
+ case 's':
+ total_width += strlen (va_arg (ap, char *));
+ break;
+ case 'p':
+ case 'n':
+ (void) va_arg (ap, char *);
+ break;
+ }
+ }
+ }
+#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;
+ va_list args;
+{
+ return int_vasprintf (result, format, &args);
+}
+
+int
+asprintf
+#if __STDC__
+ (char **result, const char *format, ...)
+#else
+ (result, va_alist)
+ char **result;
+ va_dcl
+#endif
+{
+ va_list args;
+ int done;
+
+#if __STDC__
+ va_start (args, format);
+#else
+ char *format;
+ va_start (args);
+ format = va_arg (args, char *);
+#endif
+ done = vasprintf (result, format, args);
+ va_end (args);
+
+ return done;
+}
+
+#ifdef TEST
+void
+checkit
+#if __STDC__
+ (const char* format, ...)
+#else
+ (va_alist)
+ va_dcl
+#endif
+{
+ va_list args;
+ char *result;
+
+#if __STDC__
+ va_start (args, format);
+#else
+ char *format;
+ va_start (args);
+ format = va_arg (args, char *);
+#endif
+ vasprintf (&result, format, args);
+ if (strlen (result) < global_total_width)
+ printf ("PASS: ");
+ else
+ printf ("FAIL: ");
+ printf ("%d %s\n", global_total_width, result);
+}
+
+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");
+}
+#endif /* TEST */

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