lib/strutils: rename strappend() to strconcat()

It concatenates two strings to a new string. It's something else than
"append".

Signed-off-by: Karel Zak <kzak@redhat.com>

include/strutils.h

@@ -378,9 +378,9 @@ static inline void strrem(char *s, int rem)
 	*p = '\0';
 }
 
-extern char *strnappend(const char *s, const char *suffix, size_t b);
-extern char *strappend(const char *s, const char *suffix);
-extern char *strfappend(const char *s, const char *format, ...)
+extern char *strnconcat(const char *s, const char *suffix, size_t b);
+extern char *strconcat(const char *s, const char *suffix);
+extern char *strfconcat(const char *s, const char *format, ...)
 		 __attribute__ ((__format__ (__printf__, 2, 3)));
 extern const char *split(const char **state, size_t *l, const char *separator, int quoted);
 

lib/strutils.c

@@ -936,7 +936,8 @@ int streq_paths(const char *a, const char *b)
 	return 0;
 }
 
-char *strnappend(const char *s, const char *suffix, size_t b)
+/* concatenate two strings to a new string, the size of the second string is limited by @b */
+char *strnconcat(const char *s, const char *suffix, size_t b)
 {
         size_t a;
         char *r;
@@ -966,12 +967,14 @@ char *strnappend(const char *s, const char *suffix, size_t b)
         return r;
 }
 
-char *strappend(const char *s, const char *suffix)
+/* concatenate two strings to a new string */
+char *strconcat(const char *s, const char *suffix)
 {
-        return strnappend(s, suffix, suffix ? strlen(suffix) : 0);
+        return strnconcat(s, suffix, suffix ? strlen(suffix) : 0);
 }
 
-char *strfappend(const char *s, const char *format, ...)
+/* concatenate @s and string defined by @format to a new string */
+char *strfconcat(const char *s, const char *format, ...)
 {
 	va_list ap;
 	char *val, *res;
@@ -984,7 +987,7 @@ char *strfappend(const char *s, const char *format, ...)
 	if (sz < 0)
 		return NULL;
 
-	res = strnappend(s, val, sz);
+	res = strnconcat(s, val, sz);
 	free(val);
 	return res;
 }

lib/strv.c

@@ -162,7 +162,7 @@ int strv_extend_strv_concat(char ***a, char **b, const char *suffix) {
         STRV_FOREACH(s, b) {
                 char *v;
 
-                v = strappend(*s, suffix);
+                v = strconcat(*s, suffix);
                 if (!v)
                         return -ENOMEM;
 

libmount/src/tab.c

@@ -1747,7 +1747,7 @@ int __mnt_table_is_fs_mounted(struct libmnt_table *tb, struct libmnt_fs *fstab_f
 			src = mnt_fs_get_srcpath(rootfs);
 			if (fstype && strncmp(fstype, "nfs", 3) == 0 && root) {
 				/* NFS stores the root at the end of the source */
-				src = src2 = strappend(src, root);
+				src = src2 = strconcat(src, root);
 				free(root);
 				root = NULL;
 			}

misc-utils/getopt.c

@@ -280,7 +280,7 @@ static void add_short_options(struct getopt_control *ctl, char *options)
 {
 	free(ctl->optstr);
 	if (*options != '+' && getenv("POSIXLY_CORRECT"))
-		ctl->optstr = strappend("+", options);
+		ctl->optstr = strconcat("+", options);
 	else
 		ctl->optstr = xstrdup(options);
 	if (!ctl->optstr)

misc-utils/logger.c

@@ -654,7 +654,7 @@ static char *strdup_structured_data_list(struct list_head *ls)
 
 		if (!one)
 			continue;
-		res = strappend(tmp, one);
+		res = strconcat(tmp, one);
 		free(tmp);
 		free(one);
 	}
@@ -672,7 +672,7 @@ static char *get_structured_data_string(struct logger_ctl *ctl)
 		usr = strdup_structured_data_list(&ctl->user_sds);
 
 	if (sys && usr) {
-		res = strappend(sys, usr);
+		res = strconcat(sys, usr);
 		free(sys);
 		free(usr);
 	} else