test program to print verbose version message

To help with fixing issue 467, add a new program
tests/print-libgphoto2-version.c to print both
the short and verbose version messages.

2 files changed, 160 insertions, 0 deletions

diff --git a/tests/Makefile.am b/tests/Makefile.am
index bc8512e3c..8e2ef92fe 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -34,6 +34,17 @@ test_endian_LDADD = \
 	$(LIBEXIF_LIBS) \
 	$(INTLLIBS)
 
+
+noinst_PROGRAMS += print-libgphoto2-version
+print_libgphoto2_version_SOURCE = print-libgphoto2-version.c
+print_libgphoto2_version_LDADD =
+print_libgphoto2_version_LDADD += $(top_builddir)/libgphoto2/libgphoto2.la
+print_libgphoto2_version_LDADD += $(top_builddir)/libgphoto2_port/libgphoto2_port/libgphoto2_port.la
+print_libgphoto2_version_LDADD += $(LIBLTDL)
+print_libgphoto2_version_LDADD += $(LIBEXIF_LIBS)
+print_libgphoto2_version_LDADD += $(INTLLIBS)
+
+
 noinst_PROGRAMS += test-gphoto2
 test_gphoto2_SOURCE = test-gphoto2.c
 test_gphoto2_LDADD = \
diff --git a/tests/print-libgphoto2-version.c b/tests/print-libgphoto2-version.c
new file mode 100644
index 000000000..b5a1d8764
--- /dev/null
+++ b/tests/print-libgphoto2-version.c
@@ -0,0 +1,149 @@
+/* print-libgphoto2-version.c - print libgphoto2 library version
+ *
+ * Copyright 2002,2005 Hans Ulrich Niedermann <hun@users.sourceforge.net>
+ * Portions Copyright 2002 Lutz Mueller <lutz@users.sourceforge.net>
+ * Portions Copyright 2005 Julien BLACHE <jblache@debian.org>
+ * Portions Copyright 2020 Hans Ulrich Niedermann <hun@n-dimensional.de>
+ *
+ * This program 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 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
+ *
+ *
+ * This has been mostly copied from the file
+ *
+ *     packaging/generic/print-camera-list.c
+ *
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "gphoto2/gphoto2-version.h"
+
+
+/* Not sure whether this is the best possible name */
+#define ARGV0 "print-camera-list"
+
+
+#define FATAL(msg...)				\
+	do { \
+		fprintf(stderr, ARGV0 ": Fatal: " msg); \
+		fprintf(stderr, "\n"); \
+		exit(13); \
+	} while (0)
+
+
+typedef struct {
+	char *name;
+	GPVersionFunc version_func;
+} module_version;
+
+
+const module_version module_versions[] = {
+	{ "libgphoto2", gp_library_version },
+	{ "libgphoto2_port", gp_port_library_version },
+	{ NULL, NULL }
+};
+
+
+/* print_version_comment
+ * Print comment to output containing information on library versions
+ *
+ * out        the file to write the comment to
+ * startline  printed at the start of each line, e.g. "# " or "    | "
+ * endline    printed as the end of each line,   e.g. "\n" or "\n"
+ * firstline  printed before first line,         e.g. NULL or "<!--+\n"
+ * lastline   printed after last line,           e.g. "\n" or "    +-->\n"
+ */
+
+static void
+print_version_comment(FILE *out,
+		      const char *startline, const char *endline,
+		      const char *firstline, const char *lastline)
+{
+	unsigned int n;
+	if (out == NULL) { FATAL("Internal error: NULL out in print_version_comment()"); }
+	if (firstline != NULL) { fputs(firstline, out); }
+	if (startline != NULL) { fputs(startline, out); }
+	fputs("Short runtime version information on the libgphoto2 build:", out);
+	if (endline != NULL) { fputs(endline, out); }
+	for (n=0; (module_versions[n].name != NULL) && (module_versions[n].version_func != NULL); n++) {
+		const char *name = module_versions[n].name;
+		GPVersionFunc func = module_versions[n].version_func;
+		const char **v = func(GP_VERSION_SHORT);
+		unsigned int i;
+		if (!v) { continue; }
+		if (!v[0]) { continue; }
+		if (startline != NULL) { fputs(startline, out); }
+		fputs("  ", out);
+		fprintf(out,"%-15s %-14s ", name, v[0]);
+		for (i=1; v[i] != NULL; i++) {
+			fputs(v[i], out);
+			if (v[i+1] != NULL) {
+				fputs(", ", out);
+			}
+		}
+		if (endline != NULL) { fputs(endline, out); }
+	}
+	if (lastline != NULL) { fputs(lastline, out); }
+}
+
+
+static void
+print_version_verbose(FILE *out,
+		      const char *startline, const char *endline,
+		      const char *firstline, const char *lastline)
+{
+	unsigned int n;
+	if (out == NULL) { FATAL("Internal error: NULL out in print_version_comment()"); }
+	if (firstline != NULL) { fputs(firstline, out); }
+	if (startline != NULL) { fputs(startline, out); }
+	fputs("Verbose runtime version information on the libgphoto2 build:", out);
+	if (endline != NULL) { fputs(endline, out); }
+	for (n=0; (module_versions[n].name != NULL) && (module_versions[n].version_func != NULL); n++) {
+		const char *name = module_versions[n].name;
+		GPVersionFunc func = module_versions[n].version_func;
+		const char **v = func(GP_VERSION_VERBOSE);
+		unsigned int i;
+		if (!v) { continue; }
+		if (!v[0]) { continue; }
+		if (startline != NULL) { fputs(startline, out); }
+		fputs("  * ", out);
+		fprintf(out,"%s %s", name, v[0]);
+		if (endline != NULL) { fputs(endline, out); }
+		for (i=1; v[i] != NULL; i++) {
+			fprintf(out, "      * %s", v[i]);
+			if (endline != NULL) { fputs(endline, out); }
+		}
+	}
+	if (lastline != NULL) { fputs(lastline, out); }
+}
+
+
+int main()
+{
+	print_version_comment(stdout, NULL, "\n", NULL, NULL);
+	print_version_verbose(stdout, NULL, "\n", NULL, NULL);
+	return 0;
+}
+
+
+/*
+ * Local Variables:
+ * c-file-style:"linux"
+ * indent-tabs-mode:t
+ * End:
+ */