quote: make the input argument to nasm_quote() const

Whereas nasm_unquote() unquotes the argument in place, nasm_quote()
has to allocate a new string (since the new string will *always* be
longer than the old string!)  Make the old string const since we're
making a copy anyway.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

2 files changed, 4 insertions, 3 deletions

diff --git a/quote.c b/quote.c
index d1cbfd4b..75a93726 100644
--- a/quote.c
+++ b/quote.c
@@ -42,9 +42,10 @@
 #include "nasmlib.h"
 #include "quote.h"
 
-char *nasm_quote(char *str, size_t len)
+char *nasm_quote(const char *str, size_t len)
 {
-    char c, c1, *p, *q, *nstr, *ep;
+    const char *p, *ep;
+    char c, c1, *q, *nstr;
     unsigned char uc;
     bool sq_ok, dq_ok;
     size_t qlen;
diff --git a/quote.h b/quote.h
index 13089cb7..2d8ce87b 100644
--- a/quote.h
+++ b/quote.h
@@ -36,7 +36,7 @@
 
 #include "compiler.h"
 
-char *nasm_quote(char *str, size_t len);
+char *nasm_quote(const char *str, size_t len);
 size_t nasm_unquote(char *str, char **endptr);
 char *nasm_skip_string(char *str);