Move add_to_string to "quote.c" and make it extern.

So that this function may be used in places other than "rsh.c".

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>

quote.c

diff --git a/quote.c b/quote.c
index a38786c..e3a4d4a 100644
--- a/quote.c
+++ b/quote.c
@@ -106,6 +106,35 @@
 	return buf;
 }
 
+/*
+ * Append a string to a string buffer, with or without shell quoting.
+ * Return true if the buffer overflowed.
+ */
+int add_to_string(char **ptrp, int *sizep, const char *str, int quote)
+{
+	char *p = *ptrp;
+	int size = *sizep;
+	int oc;
+	int err = 0;
+
+	if (quote)
+		oc = sq_quote_buf(p, size, str);
+	else {
+		oc = strlen(str);
+		memcpy(p, str, (size <= oc) ? size - 1 : oc);
+	}
+
+	if (size <= oc) {
+		err = 1;
+		oc = size - 1;
+	}
+
+	*ptrp += oc;
+	**ptrp = '\0';
+	*sizep -= oc;
+	return err;
+}
+
 char *sq_dequote(char *arg)
 {
 	char *dst = arg;

quote.h

diff --git a/quote.h b/quote.h
index a6c4611..1a29e79 100644
--- a/quote.h
+++ b/quote.h
@@ -33,6 +33,12 @@
 extern size_t sq_quote_buf(char *dst, size_t n, const char *src);
 extern char *sq_quote_argv(const char** argv, int count);
 
+/*
+ * Append a string to a string buffer, with or without shell quoting.
+ * Return true if the buffer overflowed.
+ */
+extern int add_to_string(char **ptrp, int *sizep, const char *str, int quote);
+
 /* This unwraps what sq_quote() produces in place, but returns
  * NULL if the input does not look like what sq_quote would have
  * produced.

rsh.c

diff --git a/rsh.c b/rsh.c
index 07166ad..f34409e 100644
--- a/rsh.c
+++ b/rsh.c
@@ -8,36 +8,7 @@
 
 #define COMMAND_SIZE 4096
 
-/*
- * Append a string to a string buffer, with or without shell quoting.
- * Return true if the buffer overflowed.
- */
-static int add_to_string(char **ptrp, int *sizep, const char *str, int quote)
-{
-	char *p = *ptrp;
-	int size = *sizep;
-	int oc;
-	int err = 0;
-
-	if ( quote ) {
-		oc = sq_quote_buf(p, size, str);
-	} else {
-		oc = strlen(str);
-		memcpy(p, str, (oc >= size) ? size-1 : oc);
-	}
-
-	if ( oc >= size ) {
-		err = 1;
-		oc = size-1;
-	}
-
-	*ptrp  += oc;
-	**ptrp  = '\0';
-	*sizep -= oc;
-	return err;
-}
-
-int setup_connection(int *fd_in, int *fd_out, const char *remote_prog, 
+int setup_connection(int *fd_in, int *fd_out, const char *remote_prog,
 		     char *url, int rmt_argc, char **rmt_argv)
 {
 	char *host;