Rename fmt_string -> sudo_new_key_val to better describe its function.

lib/util/key_val.c

@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2010-2012 Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <sys/types.h>
+
+#include <stdio.h>
+#ifdef STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#else
+# ifdef HAVE_STDLIB_H
+#  include <stdlib.h>
+# endif
+#endif /* STDC_HEADERS */
+#ifdef HAVE_STRING_H
+# if defined(HAVE_MEMORY_H) && !defined(STDC_HEADERS)
+#  include <memory.h>
+# endif
+# include <string.h>
+#endif /* HAVE_STRING_H */
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#endif /* HAVE_STRINGS_H */
+
+#include "missing.h"
+#include "sudo_debug.h"
+#include "sudo_util.h"
+
+/*
+ * Create a new key=value pair and return it.
+ * The caller is responsible for freeing the string.
+ */
+char *
+sudo_new_key_val(const char *key, const char *val)
+{
+    size_t key_len = strlen(key);
+    size_t val_len = strlen(val);
+    char *cp, *str;
+    debug_decl(sudo_new_key_val, SUDO_DEBUG_UTIL)
+
+    cp = str = malloc(key_len + 1 + val_len + 1);
+    if (str != NULL) {
+	memcpy(cp, key, key_len);
+	cp += key_len;
+	*cp++ = '=';
+	memcpy(cp, val, val_len);
+	cp += val_len;
+	*cp = '\0';
+    }
+
+    debug_return_str(str);
+}