From 957ef4d81438a74d530f2a3890bfcd0145c11fd9 Mon Sep 17 00:00:00 2001
From: Jesse Luehrs <doy@tozt.net>
Date: Sun, 1 May 2016 22:21:46 -0400
Subject: simplify

---
 src/config.c | 32 ++++++++++++++------------------
 src/util.c   | 19 +++++++++++++++++++
 src/util.h   |  1 +
 3 files changed, 34 insertions(+), 18 deletions(-)

diff --git a/src/config.c b/src/config.c
index b314522..7030b78 100644
--- a/src/config.c
+++ b/src/config.c
@@ -317,46 +317,42 @@ static void runes_config_set_defaults(RunesTerm *t)
 static FILE *runes_config_get_config_file()
 {
     char *home, *config_dir, *path;
-    size_t home_len, config_dir_len;
     FILE *file;
 
     home = getenv("HOME");
-    home_len = strlen(home);
 
     config_dir = getenv("XDG_CONFIG_HOME");
     if (config_dir) {
         config_dir = strdup(config_dir);
     }
     else {
-        config_dir = malloc(home_len + sizeof("/.config") + 1);
-        strcpy(config_dir, home);
-        strcpy(config_dir + home_len, "/.config");
+        sprintf_dup(&config_dir, "%s/.config", home);
     }
-    config_dir_len = strlen(config_dir);
 
-    path = malloc(config_dir_len + sizeof("/runes/runes.conf") + 1);
-    strcpy(path, config_dir);
-    strcpy(path + config_dir_len, "/runes/runes.conf");
+    sprintf_dup(&path, "%s/runes/runes.conf", config_dir);
     free(config_dir);
 
-    if ((file = fopen(path, "r"))) {
-        free(path);
+    file = fopen(path, "r");
+    free(path);
+
+    if (file) {
         return file;
     }
 
+    sprintf_dup(&path, "%s/.runesrc", home);
+
+    file = fopen(path, "r");
     free(path);
-    path = malloc(home_len + sizeof("/.runesrc") + 1);
-    strcpy(path, home);
-    strcpy(path + home_len, "/.runesrc");
 
-    if ((file = fopen(path, "r"))) {
-        free(path);
+    if (file) {
         return file;
     }
 
-    free(path);
+    path = "/etc/runesrc";
+
+    file = fopen(path, "r");
 
-    if ((file = fopen("/etc/runesrc", "r"))) {
+    if (file) {
         return file;
     }
 
diff --git a/src/util.c b/src/util.c
index d87fd72..686f02d 100644
--- a/src/util.c
+++ b/src/util.c
@@ -1,5 +1,6 @@
 #include <stdarg.h>
 #include <stdio.h>
+#include <stdlib.h>
 
 #include "runes.h"
 
@@ -11,3 +12,21 @@ void runes_warn(const char *fmt, ...)
     vfprintf(stderr, fmt, ap);
     va_end(ap);
 }
+
+int sprintf_dup(char **out, const char *fmt, ...)
+{
+    int outlen = 0;
+    va_list ap;
+
+    va_start(ap, fmt);
+    outlen = vsnprintf(*out, outlen, fmt, ap);
+    va_end(ap);
+
+    *out = malloc(outlen + 1);
+
+    va_start(ap, fmt);
+    outlen = vsnprintf(*out, outlen + 1, fmt, ap);
+    va_end(ap);
+
+    return outlen;
+}
diff --git a/src/util.h b/src/util.h
index 183f8c5..9432ed1 100644
--- a/src/util.h
+++ b/src/util.h
@@ -4,5 +4,6 @@
 #define UNUSED(x) ((void)x)
 
 void runes_warn(const char *fmt, ...);
+int sprintf_dup(char **out, const char *fmt, ...);
 
 #endif
-- 
cgit v1.2.3