tdrw: simplify drw_font_xcreate and prevent a potential unneeded allocation - dmenu - Dmenu fork with xft fonts.
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       ---
 (DIR) commit e2e7fcb2198d40e2a50591932ee2b2a8f9969a5f
 (DIR) parent 1f2226df1380f178240bb81dddcad6c5ff2e9d62
 (HTM) Author: Hiltjo Posthuma <hiltjo@codemadness.org>
       Date:   Tue, 20 Oct 2015 22:55:39 +0200
       
       drw: simplify drw_font_xcreate and prevent a potential unneeded allocation
       
       Diffstat:
         drw.c                               |      41 ++++++++++++++-----------------
       
       1 file changed, 19 insertions(+), 22 deletions(-)
       ---
 (DIR) diff --git a/drw.c b/drw.c
       t@@ -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
       t@@ -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;