select driver by filename extension instead of driver spec

4 files changed, 14 insertions, 6 deletions

diff --git a/gfx/cro.c b/gfx/cro.c
index 588aad2..13b1daa 100644
--- a/gfx/cro.c
+++ b/gfx/cro.c
@@ -450,7 +450,6 @@ void cro_color_override(struct cro_ctx *cc, int color)
 
 
 static const struct gfx_ops real_cro_ops = {
-	.name		= "cairo",
 	.line		= cr_line,
 	.poly		= cr_poly,
 	.circ		= cr_circ,
@@ -921,8 +920,11 @@ cairo_surface_t *cro_img_surface(struct cro_ctx *cc)
 /* ----- Operations -------------------------------------------------------- */
 
 
+static const char *const cro_png_ext[] = { "png" };
+
 const struct gfx_ops cro_png_ops = {
-	.name		= "png",
+	.ext		= cro_png_ext,
+	.n_ext		= ARRAY_ELEMENTS(cro_png_ext),
 	.line		= record_line,
 	.poly		= record_poly,
 	.circ		= record_circ,
@@ -934,8 +936,11 @@ const struct gfx_ops cro_png_ops = {
 	.end		= cr_png_end,
 };
 
+static const char *const cro_pdf_ext[] = { "pdf" };
+
 const struct gfx_ops cro_pdf_ops = {
-	.name		= "pdf",
+	.ext		= cro_pdf_ext,
+	.n_ext		= ARRAY_ELEMENTS(cro_pdf_ext),
 	.line		= record_line,
 	.poly		= record_poly,
 	.circ		= record_circ,
diff --git a/gfx/diff.c b/gfx/diff.c
index 08554a0..d43b292 100644
--- a/gfx/diff.c
+++ b/gfx/diff.c
@@ -508,7 +508,6 @@ void diff_to_canvas(cairo_t *cr, int cx, int cy, float scale,
 
 
 const struct gfx_ops diff_ops = {
-	.name		= "diff",
 	.line		= diff_line,
 	.poly		= diff_poly,
 	.circ		= diff_circ,
diff --git a/gfx/fig.c b/gfx/fig.c
index a60e41b..c0fa470 100644
--- a/gfx/fig.c
+++ b/gfx/fig.c
@@ -372,8 +372,11 @@ static int fig_end(void *ctx)
 /* ----- Operations -------------------------------------------------------- */
 
 
+static const char *const fig_ext[] = { "fig" };
+
 const struct gfx_ops fig_ops = {
-	.name		= "fig",
+	.ext		= fig_ext,
+	.n_ext		= ARRAY_ELEMENTS(fig_ext),
 	.line		= fig_line,
 	.rect		= fig_rect,
 	.poly		= fig_poly,
diff --git a/gfx/gfx.h b/gfx/gfx.h
index c53c661..da28b6b 100644
--- a/gfx/gfx.h
+++ b/gfx/gfx.h
@@ -22,7 +22,8 @@
 struct gfx;
 
 struct gfx_ops {
-	const char *name;
+	const char *const *ext;
+	int n_ext;
 	void (*line)(void *ctx, int sx, int sy, int ex, int ey,
 	    int color, unsigned layer);
 	void (*rect)(void *ctx, int sx, int sy, int ex, int ey,