support: added assertions

Check the function parameters.

diff --git a/src/support.c b/src/support.c
index ad0f93bd2057d65661f479d3367f1291205297c1..6cf61137c2534c09c184a208fa1163e9beff7f9a 100644 (file)
--- a/src/support.c
+++ b/src/support.c
@@ -21,6 +21,7 @@
 #include "support.h"
 #include "ncmpc.h"
 
+#include <assert.h>
 #include <time.h>
 #include <ctype.h>
 #include <stdio.h>
@@ -36,6 +37,8 @@ static gboolean noconvert = TRUE;
 size_t
 my_strlen(const char *str)
 {
+       assert(str != NULL);
+
        if (g_utf8_validate(str, -1, NULL)) {
                size_t len = g_utf8_strlen(str, -1);
                size_t width = 0;
@@ -91,6 +94,8 @@ basename(char *path)
 {
        char *end;
 
+       assert(path != NULL);
+
        path = remove_trailing_slash(path);
        end = path + strlen(path);
 
@@ -109,6 +114,9 @@ basename(char *path)
 char *
 strcasestr(const char *haystack, const char *needle)
 {
+       assert(haystack != NULL);
+       assert(needle != NULL);
+
        return strstr(lowerstr(haystack), lowerstr(needle));
 }
 #endif /* HAVE_STRCASESTR */
@@ -120,6 +128,10 @@ strscroll(char *str, char *separator, int width, scroll_state_t *st)
        gchar *tmp, *buf;
        gsize len, size;
 
+       assert(str != NULL);
+       assert(separator != NULL);
+       assert(st != NULL);
+
        if( st->offset==0 ) {
                st->offset++;
                return g_strdup(str);
@@ -170,6 +182,8 @@ utf8_to_locale(const char *utf8str)
        gsize rb, wb;
        GError *error;
 
+       assert(utf8str != NULL);
+
        if (noconvert)
                return g_strdup(utf8str);
 
@@ -201,6 +215,8 @@ locale_to_utf8(const char *localestr)
        gsize rb, wb;
        GError *error;
 
+       assert(localestr != NULL);
+
        if (noconvert)
                return g_strdup(localestr);