str: Add helper to extend dynamically argv list

Add argv_insert function to dynamically insert string
into argv list.

Also added argv_free func to easy free dynamically allocated
argv list.

Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>

1 files changed, 2 insertions, 0 deletions

diff --git a/str.h b/str.h
index 7d078da..3ffb2b9 100644
--- a/str.h
+++ b/str.h
@@ -9,5 +9,7 @@ extern int slprintf_nocheck(char *dst, size_t size, const char *fmt, ...);
 extern char *strtrim_right(char *p, char c);
 extern noinline void *xmemset(void *s, int c, size_t n);
 extern char *argv2str(int startind, int argc, char **argv);
+extern char **argv_insert(char **argv, size_t *count, const char *str);
+extern void argv_free(char **argv);
 
 #endif /* STR_H */