rsvg-convert: remove the C code and add the rust one to the build

3 files changed, 19 insertions, 659 deletions

diff --git a/Makefile.am b/Makefile.am
index ad4c601c..20730380 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -17,7 +17,7 @@ _rsvg_dummy.c:
 # See LIBRSVG_SRC below for the real list of Rust sources.
 librsvg_c_api_la_SOURCES = _rsvg_dummy.c
 
-bin_PROGRAMS = rsvg-convert
+CLEANFILES = $(BUILT_SOURCES)
 
 include rsvg-c-srcs.mk
 
@@ -187,7 +187,7 @@ librsvg_c_api.la: $(librsvg_c_api_la_OBJECTS) $(LIBRSVG_SRC)
 	PKG_CONFIG_ALLOW_CROSS=1						\
 	PKG_CONFIG='$(PKG_CONFIG)'						\
 	CARGO_TARGET_DIR=$(CARGO_TARGET_DIR)					\
-	$(CARGO) --locked build $(CARGO_VERBOSE) $(CARGO_TARGET_ARGS) $(CARGO_RELEASE_ARGS) \
+	$(CARGO) --locked build $(CARGO_VERBOSE) $(CARGO_TARGET_ARGS) $(CARGO_RELEASE_ARGS) --lib \
 	&& cd $(LIBRSVG_BUILD_DIR) && $(LINK) $< && mv $(RUST_LIB) .libs/librsvg_c_api.a
 
 librsvg_@RSVG_API_MAJOR_VERSION@_la_CPPFLAGS = $(AM_CPPFLAGS)
@@ -215,28 +215,26 @@ librsvg_@RSVG_API_MAJOR_VERSION@_la_LIBADD = \
 librsvgincdir = $(includedir)/librsvg-$(RSVG_API_VERSION)/librsvg
 librsvginc_HEADERS = $(librsvg_public_headers)
 
-dist_man_MANS = rsvg-convert.1
+# Use SCRIPTS instead of PROGRAMS since we build it on our own
+bin_SCRIPTS = rsvg-convert$(EXEEXT)
 
-rsvg_convert_SOURCES =			\
-	$(rsvg_convert_srcs)		\
-	$(NULL)
+CLEANFILES += $(bin_SCRIPTS)
 
-rsvg_convert_CPPFLAGS = \
-	-I$(top_srcdir)/include			\
-	-I$(top_builddir)/include		\
-	-DLIBRSVG_DATADIR="\"$(datadir)\""	\
-	$(AM_CPPFLAGS)
+RSVG_CONVERT_BIN=$(CARGO_TARGET_DIR)/$(RUST_TARGET_SUBDIR)/rsvg-convert$(EXEEXT)
 
-rsvg_convert_CFLAGS =\
-	$(RSVG_CONVERT_CFLAGS) \
-	$(AM_CFLAGS)
+RSVG_CONVERT_SRC = src/bin/rsvg-convert/main.rs
 
-rsvg_convert_LDFLAGS = $(AM_LDFLAGS)
+$(RSVG_CONVERT_BIN): $(RSVG_CONVERT_SRC)
+	+cd $(top_srcdir) &&							\
+	PKG_CONFIG_ALLOW_CROSS=1						\
+	PKG_CONFIG='$(PKG_CONFIG)'						\
+	CARGO_TARGET_DIR=$(CARGO_TARGET_DIR)					\
+	$(CARGO) --locked build $(CARGO_VERBOSE) $(CARGO_TARGET_ARGS) $(CARGO_RELEASE_ARGS) --bin rsvg-convert
+
+rsvg-convert$(EXEEXT): $(RSVG_CONVERT_BIN)
+	cd $(LIBRSVG_BUILD_DIR) && mv $(RSVG_CONVERT_BIN) rsvg-convert
 
-rsvg_convert_LDADD = \
-	$(top_builddir)/librsvg-@RSVG_API_MAJOR_VERSION@.la	\
-	$(RSVG_CONVERT_LIBS) \
-	$(LIBM)
+dist_man_MANS = rsvg-convert.1
 
 dist_doc_DATA =				\
 	COMPILING.md			\
@@ -247,6 +245,7 @@ dist_doc_DATA =				\
 EXTRA_DIST =				\
 	$(LIBRSVG_SRC)			\
 	$(RUST_EXTRA)			\
+	$(RSVG_CONVERT_SRC)		\
 	librsvg.doap			\
 	AUTHORS				\
 	NEWS				\
@@ -259,9 +258,6 @@ EXTRA_DIST =				\
 	tap-driver.sh			\
 	tap-test
 
-## Put `exec' in the name because this should be installed by
-## `install-exec', not `install-data'.
-
 pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = librsvg-$(RSVG_API_VERSION).pc
 
@@ -300,7 +296,7 @@ nodist_gir_DATA = $(INTROSPECTION_GIRS)
 typelibsdir = $(libdir)/girepository-1.0
 nodist_typelibs_DATA = $(INTROSPECTION_GIRS:.gir=.typelib)
 
-CLEANFILES = $(BUILT_SOURCES) $(nodist_gir_DATA) $(nodist_typelibs_DATA)
+CLEANFILES += $(nodist_gir_DATA) $(nodist_typelibs_DATA)
 
 if ENABLE_VAPIGEN
 include $(VAPIGEN_MAKEFILE)
diff --git a/rsvg-c-srcs.mk b/rsvg-c-srcs.mk
index a9a06d4d..3c4756d9 100644
--- a/rsvg-c-srcs.mk
+++ b/rsvg-c-srcs.mk
@@ -8,5 +8,3 @@ librsvg_public_headers =		\
 librsvg_private_headers =	 	\

 	include/librsvg/rsvg-css.h	\

 	$(NULL)

-

-rsvg_convert_srcs = rsvg-convert.c

diff --git a/rsvg-convert.c b/rsvg-convert.c
deleted file mode 100644
index 922713e9..00000000
--- a/rsvg-convert.c
+++ /dev/null
@@ -1,634 +0,0 @@
-/* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
-/* vim: set sw=4 sts=4 expandtab: */
-/*
-
-   rsvg-convert.c: Command line utility for exercising rsvg with cairo.
- 
-   Copyright (C) 2005 Red Hat, Inc.
-   Copyright (C) 2005 Dom Lachowicz <cinamod@hotmail.com>
-   Copyright (C) 2005 Caleb Moore <c.moore@student.unsw.edu.au>
-   Copyright (C) 2019 Federico Mena Quintero <federico@gnome.org>
-  
-   This library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   This library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with this library; if not, write to the Free Software
-   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
-  
-   Authors: Carl Worth <cworth@cworth.org>, 
-            Caleb Moore <c.moore@student.unsw.edu.au>,
-            Dom Lachowicz <cinamod@hotmail.com>,
-            Federico Mena Quintero <federico@gnome.org>
-*/
-
-#define RSVG_DISABLE_DEPRECATION_WARNINGS
-
-#include "config.h"
-
-#include <math.h>
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <limits.h>
-#include <locale.h>
-#include <glib/gi18n.h>
-#include <gio/gio.h>
-
-#ifdef G_OS_UNIX
-#include <gio/gunixinputstream.h>
-#endif
-
-#ifdef G_OS_WIN32
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h>
-#include <io.h>
-#include <fcntl.h>
-
-#include <gio/gwin32inputstream.h>
-#endif
-
-#include "librsvg/rsvg-css.h"
-#include "librsvg/rsvg.h"
-
-#ifdef CAIRO_HAS_PS_SURFACE
-#include <cairo-ps.h>
-#endif
-
-#ifdef CAIRO_HAS_PDF_SURFACE
-#include <cairo-pdf.h>
-#endif
-
-#ifdef CAIRO_HAS_SVG_SURFACE
-#include <cairo-svg.h>
-#endif
-
-#ifdef CAIRO_HAS_XML_SURFACE
-#include <cairo-xml.h>
-#endif
-
-typedef enum {
-    SIZE_KIND_ZOOM,
-    SIZE_KIND_WH,
-    SIZE_KIND_WH_MAX,
-    SIZE_KIND_ZOOM_MAX
-} SizeKind;
-
-typedef struct {
-    SizeKind kind;
-    double x_zoom;
-    double y_zoom;
-    gint width;
-    gint height;
-
-    gboolean keep_aspect_ratio;
-} SizeMode;
-
-static void
-get_final_size (int *width, int *height, SizeMode *real_data)
-{
-    double zoomx, zoomy, zoom;
-
-    int in_width, in_height;
-
-    in_width = *width;
-    in_height = *height;
-
-    switch (real_data->kind) {
-    case SIZE_KIND_ZOOM:
-        if (*width < 0 || *height < 0)
-            return;
-
-        *width = floor (real_data->x_zoom * *width + 0.5);
-        *height = floor (real_data->y_zoom * *height + 0.5);
-        break;
-
-    case SIZE_KIND_ZOOM_MAX:
-        if (*width < 0 || *height < 0)
-            return;
-
-        *width = floor (real_data->x_zoom * *width + 0.5);
-        *height = floor (real_data->y_zoom * *height + 0.5);
-
-        if (*width > real_data->width || *height > real_data->height) {
-            zoomx = (double) real_data->width / *width;
-            zoomy = (double) real_data->height / *height;
-            zoom = MIN (zoomx, zoomy);
-
-            *width = floor (zoom * *width + 0.5);
-            *height = floor (zoom * *height + 0.5);
-        }
-        break;
-
-    case SIZE_KIND_WH_MAX:
-        if (*width < 0 || *height < 0)
-            return;
-
-        zoomx = (double) real_data->width / *width;
-        zoomy = (double) real_data->height / *height;
-        if (zoomx < 0)
-            zoom = zoomy;
-        else if (zoomy < 0)
-            zoom = zoomx;
-        else
-            zoom = MIN (zoomx, zoomy);
-
-        *width = floor (zoom * *width + 0.5);
-        *height = floor (zoom * *height + 0.5);
-        break;
-
-    case SIZE_KIND_WH:
-        if (real_data->width != -1)
-            *width = real_data->width;
-        if (real_data->height != -1)
-            *height = real_data->height;
-        break;
-
-    default:
-        g_assert_not_reached ();
-    }
-
-    if (real_data->keep_aspect_ratio) {
-        int out_min = MIN (*width, *height);
-
-        if (out_min == *width) {
-            *height = in_height * ((double) *width / (double) in_width);
-        } else {
-            *width = in_width * ((double) *height / (double) in_height);
-        }
-    }
-}
-
-static void
-display_error (GError * err)
-{
-    if (err) {
-        g_printerr ("%s\n", err->message);
-        g_error_free (err);
-    }
-}
-
-static cairo_status_t
-rsvg_cairo_write_func (void *closure, const unsigned char *data, unsigned int length)
-{
-    if (fwrite (data, 1, length, (FILE *) closure) == length)
-        return CAIRO_STATUS_SUCCESS;
-    return CAIRO_STATUS_WRITE_ERROR;
-}
-
-static char *
-get_lookup_id_from_command_line (const char *lookup_id)
-{
-    char *export_lookup_id;
-
-    if (lookup_id == NULL)
-        export_lookup_id = NULL;
-    else {
-        /* rsvg_handle_has_sub() expects ids to have a '#' prepended to them, so
-         * it can lookup ids in externs like "subfile.svg#subid".  For the
-         * user's convenience, we include this '#' automatically; we only
-         * support specifying ids from the toplevel, and don't expect users to
-         * lookup things in externs.
-         */
-        export_lookup_id = g_strdup_printf ("#%s", lookup_id);
-    }
-
-    return export_lookup_id;
-}
- 
-int
-main (int argc, char **argv)
-{
-    GOptionContext *g_option_context;
-    double x_zoom = 1.0;
-    double y_zoom = 1.0;
-    double zoom = 1.0;
-    double dpi_x = 90.0;
-    double dpi_y = 90.0;
-    int width = -1;
-    int height = -1;
-    int bVersion = 0;
-    char *format = NULL;
-    char *output = NULL;
-    char *stylesheet = NULL;
-    char *export_id = NULL;
-    int keep_aspect_ratio = FALSE;
-    guint32 background_color = 0;
-    char *background_color_str = NULL;
-    gboolean using_stdin = FALSE;
-    gboolean unlimited = FALSE;
-    gboolean keep_image_data = FALSE;
-    gboolean no_keep_image_data = FALSE;
-    GError *error = NULL;
-
-    gboolean success = TRUE;
-
-    int i;
-    char **args = NULL;
-    gint n_args = 0;
-    RsvgHandle *rsvg = NULL;
-    cairo_surface_t *surface = NULL;
-    cairo_t *cr = NULL;
-    RsvgHandleFlags flags = RSVG_HANDLE_FLAGS_NONE;
-    RsvgDimensionData dimensions;
-    FILE *output_file = stdout;
-    char *export_lookup_id;
-    double unscaled_width, unscaled_height;
-    int scaled_width, scaled_height;
-
-    char *stylesheet_data = NULL;
-    gsize stylesheet_data_len = 0;
-
-    char buffer[25];
-    char *endptr;
-    char *source_date_epoch;
-    time_t now;
-    struct tm *build_time;
-    unsigned long long epoch;
-
-#ifdef G_OS_WIN32
-    HANDLE handle;
-#endif
-
-    GOptionEntry options_table[] = {
-        {"dpi-x", 'd', 0, G_OPTION_ARG_DOUBLE, &dpi_x,
-         N_("pixels per inch [optional; defaults to 90dpi]"), N_("<float>")},
-        {"dpi-y", 'p', 0, G_OPTION_ARG_DOUBLE, &dpi_y,
-         N_("pixels per inch [optional; defaults to 90dpi]"), N_("<float>")},
-        {"x-zoom", 'x', 0, G_OPTION_ARG_DOUBLE, &x_zoom,
-         N_("x zoom factor [optional; defaults to 1.0]"), N_("<float>")},
-        {"y-zoom", 'y', 0, G_OPTION_ARG_DOUBLE, &y_zoom,
-         N_("y zoom factor [optional; defaults to 1.0]"), N_("<float>")},
-        {"zoom", 'z', 0, G_OPTION_ARG_DOUBLE, &zoom, N_("zoom factor [optional; defaults to 1.0]"),
-         N_("<float>")},
-        {"width", 'w', 0, G_OPTION_ARG_INT, &width,
-         N_("width [optional; defaults to the SVG's width]"), N_("<int>")},
-        {"height", 'h', 0, G_OPTION_ARG_INT, &height,
-         N_("height [optional; defaults to the SVG's height]"), N_("<int>")},
-        {"format", 'f', 0, G_OPTION_ARG_STRING, &format,
-         N_("save format [optional; defaults to 'png']"), N_("[png, pdf, ps, eps, svg, xml, recording]")},
-        {"output", 'o', 0, G_OPTION_ARG_STRING, &output,
-         N_("output filename [optional; defaults to stdout]"), NULL},
-        {"export-id", 'i', 0, G_OPTION_ARG_STRING, &export_id,
-         N_("SVG id of object to export [optional; defaults to exporting all objects]"), N_("<object id>")},
-        {"keep-aspect-ratio", 'a', 0, G_OPTION_ARG_NONE, &keep_aspect_ratio,
-         N_("whether to preserve the aspect ratio [optional; defaults to FALSE]"), NULL},
-        {"background-color", 'b', 0, G_OPTION_ARG_STRING, &background_color_str,
-         N_("set the background color [optional; defaults to None]"), N_("[black, white, #abccee, #aaa...]")},
-        {"stylesheet", 's', 0, G_OPTION_ARG_FILENAME, &stylesheet, N_("Filename of CSS stylesheet"), NULL},
-        {"unlimited", 'u', 0, G_OPTION_ARG_NONE, &unlimited, N_("Allow huge SVG files"), NULL},
-        {"keep-image-data", 0, 0, G_OPTION_ARG_NONE, &keep_image_data, N_("Keep image data"), NULL},
-        {"no-keep-image-data", 0, 0, G_OPTION_ARG_NONE, &no_keep_image_data, N_("Don't keep image data"), NULL},
-        {"version", 'v', 0, G_OPTION_ARG_NONE, &bVersion, N_("show version information"), NULL},
-        {G_OPTION_REMAINING, 0, 0, G_OPTION_ARG_FILENAME_ARRAY, &args, NULL, N_("[FILE...]")},
-        {NULL}
-    };
-
-    /* Set the locale so that UTF-8 filenames work */
-    setlocale(LC_ALL, "");
-
-    g_option_context = g_option_context_new (_("- SVG Converter"));
-    g_option_context_add_main_entries (g_option_context, options_table, NULL);
-    g_option_context_set_help_enabled (g_option_context, TRUE);
-    if (!g_option_context_parse (g_option_context, &argc, &argv, &error)) {
-        g_option_context_free (g_option_context);
-        display_error (error);
-        exit (1);
-    }
-
-    g_option_context_free (g_option_context);
-
-    if (bVersion != 0) {
-        printf (_("rsvg-convert version %s\n"), VERSION);
-        return 0;
-    }
-
-    if (stylesheet != NULL) {
-        error = NULL;
-        if (!g_file_get_contents (stylesheet, &stylesheet_data, &stylesheet_data_len, &error)) {
-            g_printerr (_("Error reading stylesheet: %s\n"), error->message);
-            exit (1);
-        }
-    }
-
-    if (output != NULL) {
-        output_file = fopen (output, "wb");
-        if (!output_file) {
-            g_printerr (_("Error saving to file: %s\n"), output);
-            g_free (output);
-            exit (1);
-        }
-
-        g_free (output);
-    }
-#ifdef G_OS_WIN32
-    else {
-        setmode (fileno (stdout), O_BINARY);
-    }
-#endif   
-
-    if (args)
-        while (args[n_args] != NULL)
-            n_args++;
-
-    if (n_args == 0) {
-        const gchar * const stdin_args[] = { "stdin", NULL };
-        n_args = 1;
-        using_stdin = TRUE;
-        g_strfreev (args);
-        args = g_strdupv ((gchar **) stdin_args);
-    } else if (n_args > 1 && (!format || !(!strcmp (format, "ps") || !strcmp (format, "eps") || !strcmp (format, "pdf")))) {
-        g_printerr (_("Multiple SVG files are only allowed for PDF and (E)PS output.\n"));
-        exit (1);
-    }
-
-    if (dpi_x <= 0.0 || dpi_y <= 0.0) {
-        g_printerr (_("Invalid resolution\n"));
-        exit (1);
-    }
-
-    if (format != NULL &&
-        (g_str_equal (format, "ps") || g_str_equal (format, "eps") || g_str_equal (format, "pdf")) &&
-        !no_keep_image_data)
-        keep_image_data = TRUE;
-
-    if (zoom != 1.0)
-        x_zoom = y_zoom = zoom;
-
-    if (unlimited)
-        flags |= RSVG_HANDLE_FLAG_UNLIMITED;
-
-    if (keep_image_data)
-        flags |= RSVG_HANDLE_FLAG_KEEP_IMAGE_DATA;
-
-    for (i = 0; i < n_args && success; i++) {
-        GFile *file;
-        GInputStream *stream;
-
-        if (using_stdin) {
-            file = NULL;
-#ifdef _WIN32
-            handle = GetStdHandle (STD_INPUT_HANDLE);
-
-            if (handle == INVALID_HANDLE_VALUE) {
-              gchar *emsg = g_win32_error_message (GetLastError());
-              g_printerr ( _("Unable to acquire HANDLE for STDIN: %s\n"), emsg);
-              g_free (emsg);
-              exit (1);
-            }
-            stream = g_win32_input_stream_new (handle, FALSE);
-#else
-            stream = g_unix_input_stream_new (STDIN_FILENO, FALSE);
-#endif
-        } else {
-            file = g_file_new_for_commandline_arg (args[i]);
-            stream = (GInputStream *) g_file_read (file, NULL, &error);
-
-            if (stream == NULL)
-                goto done;
-        }
-
-        rsvg = rsvg_handle_new_from_stream_sync (stream, file, flags, NULL, &error);
-
-    done:
-        g_clear_object (&stream);
-        g_clear_object (&file);
-
-        if (error != NULL) {
-            g_printerr (_("Error reading SVG:"));
-            display_error (error);
-            g_printerr ("\n");
-            exit (1);
-        }
-
-        g_assert (rsvg != NULL);
-
-        if (stylesheet_data != NULL) {
-            if (!rsvg_handle_set_stylesheet (rsvg, stylesheet_data, stylesheet_data_len, &error)) {
-                g_printerr (_("Error in stylesheet: %s\n"), error->message);
-                exit (1);
-            }
-        }
-
-        rsvg_handle_set_dpi_x_y (rsvg, dpi_x, dpi_y);
-
-        export_lookup_id = get_lookup_id_from_command_line (export_id);
-        if (export_lookup_id != NULL
-            && !rsvg_handle_has_sub (rsvg, export_lookup_id)) {
-            g_printerr (_("File %s does not have an object with id \"%s\"\n"), args[i], export_id);
-            exit (1);
-        }
-
-        if (i == 0) {
-            SizeMode size_data;
-
-            if (!rsvg_handle_get_dimensions_sub (rsvg, &dimensions, export_lookup_id)) {
-                g_printerr ("Could not get dimensions for file %s\n", args[i]);
-                exit (1);
-            }
-
-            if (dimensions.width == 0 || dimensions.height == 0) {
-                g_printerr ("The SVG %s has no dimensions\n", args[i]);
-                exit (1);
-            }
-
-            unscaled_width = dimensions.width;
-            unscaled_height = dimensions.height;
-
-            /* if both are unspecified, assume user wants to zoom the image in at least 1 dimension */
-            if (width == -1 && height == -1) {
-                size_data.kind = SIZE_KIND_ZOOM;
-                size_data.x_zoom = x_zoom;
-                size_data.y_zoom = y_zoom;
-                size_data.keep_aspect_ratio = keep_aspect_ratio;
-            } else if (x_zoom == 1.0 && y_zoom == 1.0) {
-                /* if one parameter is unspecified, assume user wants to keep the aspect ratio */
-                if (width == -1 || height == -1) {
-                    size_data.kind = SIZE_KIND_WH_MAX;
-                    size_data.width = width;
-                    size_data.height = height;
-                    size_data.keep_aspect_ratio = keep_aspect_ratio;
-                } else {
-                    size_data.kind = SIZE_KIND_WH;
-                    size_data.width = width;
-                    size_data.height = height;
-                    size_data.keep_aspect_ratio = keep_aspect_ratio;
-                }
-            } else {
-                /* assume the user wants to zoom the image, but cap the maximum size */
-                size_data.kind = SIZE_KIND_ZOOM_MAX;
-                size_data.x_zoom = x_zoom;
-                size_data.y_zoom = y_zoom;
-                size_data.width = width;
-                size_data.height = height;
-                size_data.keep_aspect_ratio = keep_aspect_ratio;
-            }
-
-            scaled_width = dimensions.width;
-            scaled_height = dimensions.height;
-            get_final_size (&scaled_width, &scaled_height, &size_data);
-
-            if (scaled_width > 32767 || scaled_height > 32767) {
-                g_printerr (_("The resulting image would be larger than 32767 pixels on either dimension.\n"
-                              "Librsvg currently cannot render to images bigger than that.\n"
-                              "Please specify a smaller size.\n"));
-                exit (1);
-            }
-
-            if (!format || !strcmp (format, "png"))
-                surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
-                                                      scaled_width, scaled_height);
-#ifdef CAIRO_HAS_PDF_SURFACE
-            else if (!strcmp (format, "pdf")) {
-                surface = cairo_pdf_surface_create_for_stream (rsvg_cairo_write_func, output_file,
-                                                               scaled_width, scaled_height);
-                source_date_epoch = getenv("SOURCE_DATE_EPOCH");
-                if (source_date_epoch) {
-                    errno = 0;
-                    epoch = strtoull(source_date_epoch, &endptr, 10);
-                    if ((errno == ERANGE && (epoch == ULLONG_MAX || epoch == 0))
-                            || (errno != 0 && epoch == 0)) {
-                        g_printerr (_("Environment variable $SOURCE_DATE_EPOCH: strtoull: %s\n"),
-                                    strerror(errno));
-                        exit (1);
-                    }
-                    if (endptr == source_date_epoch) {
-                        g_printerr (_("Environment variable $SOURCE_DATE_EPOCH: No digits were found: %s\n"),
-                                    endptr);
-                        exit (1);
-                    }
-                    if (*endptr != '\0') {
-                        g_printerr (_("Environment variable $SOURCE_DATE_EPOCH: Trailing garbage: %s\n"),
-                                    endptr);
-                        exit (1);
-                    }
-                    if (epoch > ULONG_MAX) {
-                        g_printerr (_("Environment variable $SOURCE_DATE_EPOCH: value must be smaller than or equal to %lu but was found to be: %llu \n"),
-                                    ULONG_MAX, epoch);
-                        exit (1);
-                    }
-                    now = (time_t) epoch;
-                    build_time = gmtime(&now);
-                    g_assert (strftime (buffer, sizeof (buffer), "%Y-%m-%dT%H:%M:%S%z", build_time));
-                    cairo_pdf_surface_set_metadata (surface,
-                                                    CAIRO_PDF_METADATA_CREATE_DATE,
-                                                    buffer);
-                }
-            }
-#endif
-#ifdef CAIRO_HAS_PS_SURFACE
-            else if (!strcmp (format, "ps") || !strcmp (format, "eps")){
-                surface = cairo_ps_surface_create_for_stream (rsvg_cairo_write_func, output_file,
-                                                              scaled_width, scaled_height);
-                if(!strcmp (format, "eps"))
-                    cairo_ps_surface_set_eps(surface, TRUE);
-            }
-#endif
-#ifdef CAIRO_HAS_SVG_SURFACE
-            else if (!strcmp (format, "svg")) {
-                surface = cairo_svg_surface_create_for_stream (rsvg_cairo_write_func, output_file,
-                                                               scaled_width, scaled_height);
-                cairo_svg_surface_set_document_unit(surface, CAIRO_SVG_UNIT_PX);
-            }
-#endif
-#ifdef CAIRO_HAS_XML_SURFACE
-            else if (!strcmp (format, "xml")) {
-                cairo_device_t *device = cairo_xml_create_for_stream (rsvg_cairo_write_func, output_file);
-                surface = cairo_xml_surface_create (device, CAIRO_CONTENT_COLOR_ALPHA,
-                                                    scaled_width, scaled_height);
-                cairo_device_destroy (device);
-            }
-#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE (1, 10, 0)
-            else if (!strcmp (format, "recording"))
-                surface = cairo_recording_surface_create (CAIRO_CONTENT_COLOR_ALPHA, NULL);
-#endif
-#endif
-            else {
-                g_printerr (_("Unknown output format.\n"));
-                exit (1);
-            }
-
-            cr = cairo_create (surface);
-            cairo_scale (cr,
-                         scaled_width / unscaled_width,
-                         scaled_height / unscaled_height);
-        }
-
-        // Set background color
-        if (background_color_str && g_ascii_strcasecmp(background_color_str, "none") != 0) {
-            RsvgCssColorSpec spec;
-
-            spec = rsvg_css_parse_color (background_color_str);
-            if (spec.kind == RSVG_CSS_COLOR_SPEC_ARGB) {
-                background_color = spec.argb;
-            } else {
-                g_printerr (_("Invalid color specification.\n"));
-                exit (1);
-            }
-
-            cairo_set_source_rgba (
-                cr, 
-                ((background_color >> 16) & 0xff) / 255.0, 
-                ((background_color >> 8) & 0xff) / 255.0, 
-                ((background_color >> 0) & 0xff) / 255.0,
-                ((background_color >> 24) & 0xff) / 255.0);
-            cairo_rectangle (cr, 0, 0, unscaled_width, unscaled_height);
-            cairo_fill (cr);
-        }
-
-        if (export_lookup_id) {
-            RsvgPositionData pos;
-
-            if (!rsvg_handle_get_position_sub (rsvg, &pos, export_lookup_id)) {
-                g_printerr (_("File %s does not have an object with id \"%s\"\n"), args[i], export_id);
-                exit (1);
-            }
-
-            /* Move the whole thing to 0, 0 so the object to export is at the origin */
-            cairo_translate (cr, -pos.x, -pos.y);
-        }
-
-        if (!rsvg_handle_render_cairo_sub (rsvg, cr, export_lookup_id)) {
-            g_printerr ("Could not render file %s\n", args[i]);
-            exit (1);
-        }
-
-        g_free (export_lookup_id);
-
-        if (!format || !strcmp (format, "png"))
-            cairo_surface_write_to_png_stream (surface, rsvg_cairo_write_func, output_file);
-#if CAIRO_HAS_XML_SURFACE && CAIRO_VERSION >= CAIRO_VERSION_ENCODE (1, 10, 0)
-        else if (!strcmp (format, "recording")) {
-            cairo_device_t *device = cairo_xml_create_for_stream (rsvg_cairo_write_func, output_file);
-            cairo_xml_for_recording_surface (device, surface);
-            cairo_device_destroy (device);
-        }
-#endif
-        else if (!strcmp (format, "xml"))
-          ;
-        else if (!strcmp (format, "svg") || !strcmp (format, "pdf") || !strcmp (format, "ps") || !strcmp (format, "eps"))
-            cairo_show_page (cr);
-        else
-          g_assert_not_reached ();
-
-        g_object_unref (rsvg);
-    }
-
-    cairo_destroy (cr);
-
-    cairo_surface_destroy (surface);
-
-    fclose (output_file);
-
-    g_strfreev (args);
-
-    return 0;
-}