1 files changed, 89 insertions, 0 deletions
diff --git a/libshouldbeinlibc/=argz.h b/libshouldbeinlibc/=argz.h
new file mode 100644
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+++ b/libshouldbeinlibc/=argz.h
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+/* Routines for dealing with '\0' separated arg vectors.
+
+   Copyright (C) 1995 Free Software Foundation, Inc.
+
+   Written by Miles Bader <miles@gnu.ai.mit.edu>
+
+   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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#ifndef __ARGZ_H__
+#define __ARGZ_H__
+
+/* Make a '\0' separated arg vector from a unix argv vector, returning it in
+   ARGZ, and the total length in LEN.  If a memory allocation error occurs,
+   ENOMEM is returned, otherwise 0.  The result can be destroyed using free. */
+error_t argz_create(char **argv, char **argz, int *len);
+
+/* Returns the number of strings in ARGZ.  */
+int argz_count (char *argz, int len);
+
+/* Puts pointers to each string in ARGZ into ARGV, which must be large enough
+   to hold them all.  */
+void argz_extract (char *argz, int len, char **argv);
+
+/* Make '\0' separated arg vector ARGZ printable by converting all the '\0's
+   except the last into the character SEP.  */
+void argz_stringify(char *argz, int len, int sep);
+
+/* Add BUF, of length BUF_LEN to the argz vector in ARGZ & ARGZ_LEN.  */
+error_t
+argz_append (char **argz, unsigned *argz_len, char *buf, unsigned buf_len);
+
+/* Add STR to the argz vector in ARGZ & ARGZ_LEN.  This should be moved into
+   argz.c in libshouldbelibc.  */
+error_t argz_add (char **argz, unsigned *argz_len, char *str);
+
+/* Delete ENTRY from ARGZ & ARGZ_LEN, if any.  */
+void argz_delete (char **argz, unsigned *argz_len, char *entry);
+
+/* Insert ENTRY into ARGZ & ARGZ_LEN before BEFORE, which should be an
+   existing entry in ARGZ; if BEFORE is NULL, ENTRY is appended to the end.
+   Since ARGZ's first entry is the same as ARGZ, argz_insert (ARGZ, ARGZ_LEN,
+   ARGZ, ENTRY) will insert ENTRY at the beginning of ARGZ.  If BEFORE is not
+   in ARGZ, EINVAL is returned, else if memory can't be allocated for the new
+   ARGZ, ENOMEM is returned, else 0.  */
+error_t
+argz_insert (char **argz, unsigned *argz_len, char *before, char *entry);
+
+/* Returns the next entry in ARGZ & ARGZ_LEN after ENTRY, or NULL if there
+   are no more.  If entry is NULL, then the first entry is returned.  This
+   behavior allows two convenient iteration styles: 
+
+    char *entry = 0;
+    while (entry = argz_next (argz, argz_len, entry))
+      ...;
+
+   or
+
+    char *entry;
+    for (entry = argz; entry; entry = argz_next (argz, argz_len, entry))
+      ...;
+*/
+extern inline char *
+argz_next (char *argz, unsigned argz_len, char *entry)
+{
+  if (entry)
+    if (entry >= argz + argz_len)
+      return 0;
+    else
+      return entry + strlen (entry) + 1;
+  else
+    if (argz_len > 0)
+      return argz;
+    else
+      return 0;
+}
+
+#endif /* __ARGZ_H__ */