drw: simplify drw_font_xcreate and prevent a potential unneeded allocation

diff --git a/drw.c b/drw.c
index 4815e3a..4364117 100644 (file)
--- a/drw.c
+++ b/drw.c
@@ -108,12 +108,8 @@ static Fnt *
 drw_font_xcreate(Drw *drw, const char *fontname, FcPattern *fontpattern)
 {
        Fnt *font;
-
-       if (!(fontname || fontpattern))
-               die("No font specified.\n");
-
-       if (!(font = calloc(1, sizeof(Fnt))))
-               return NULL;
+       XftFont *xfont = NULL;
+       FcPattern *pattern = NULL;
 
        if (fontname) {
                /* Using the pattern found at font->xfont->pattern does not yield same
@@ -122,28 +118,29 @@ drw_font_xcreate(Drw *drw, const char *fontname, FcPattern *fontpattern)
                 * behaviour whereas the former just results in
                 * missing-character-rectangles being drawn, at least with some fonts.
                 */
-               if (!(font->xfont = XftFontOpenName(drw->dpy, drw->screen, fontname)) ||
-                   !(font->pattern = FcNameParse((FcChar8 *) fontname))) {
-                       if (font->xfont) {
-                               XftFontClose(drw->dpy, font->xfont);
-                               font->xfont = NULL;
-                       }
+               if (!(xfont = XftFontOpenName(drw->dpy, drw->screen, fontname))) {
+                       fprintf(stderr, "error, cannot load font: '%s'\n", fontname);
+                       return NULL;
+               }
+               if (!(pattern = FcNameParse((FcChar8 *) fontname))) {
                        fprintf(stderr, "error, cannot load font: '%s'\n", fontname);
+                       XftFontClose(drw->dpy, xfont);
+                       return NULL;
                }
        } else if (fontpattern) {
-               if (!(font->xfont = XftFontOpenPattern(drw->dpy, fontpattern)))
+               if (!(xfont = XftFontOpenPattern(drw->dpy, fontpattern))) {
                        fprintf(stderr, "error, cannot load font pattern.\n");
-               else
-                       font->pattern = NULL;
-       }
-
-       if (!font->xfont) {
-               free(font);
-               return NULL;
+                       return NULL;
+               }
+       } else {
+               die("no font specified.\n");
        }
 
-       font->ascent = font->xfont->ascent;
-       font->descent = font->xfont->descent;
+       font = ecalloc(1, sizeof(Fnt));
+       font->xfont = xfont;
+       font->pattern = pattern;
+       font->ascent = xfont->ascent;
+       font->descent = xfont->descent;
        font->h = font->ascent + font->descent;
        font->dpy = drw->dpy;