1 files changed, 50 insertions, 0 deletions
diff --git a/src/common/tuklib_progname.c b/src/common/tuklib_progname.c
new file mode 100644
index 0000000..e2ef4e5
--- /dev/null
+++ b/src/common/tuklib_progname.c
@@ -0,0 +1,50 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file       tuklib_progname.c
+/// \brief      Program name to be displayed in messages
+//
+//  Author:     Lasse Collin
+//
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "tuklib_progname.h"
+#include <string.h>
+
+
+#ifndef HAVE_PROGRAM_INVOCATION_NAME
+char *progname = NULL;
+#endif
+
+
+extern void
+tuklib_progname_init(char **argv)
+{
+#ifdef TUKLIB_DOSLIKE
+	// On these systems, argv[0] always has the full path and .exe
+	// suffix even if the user just types the plain program name.
+	// We modify argv[0] to make it nicer to read.
+
+	// Strip the leading path.
+	char *p = argv[0] + strlen(argv[0]);
+	while (argv[0] < p && p[-1] != '/' && p[-1] != '\\')
+		--p;
+
+	argv[0] = p;
+
+	// Strip the .exe suffix.
+	p = strrchr(p, '.');
+	if (p != NULL)
+		*p = '\0';
+
+	// Make it lowercase.
+	for (p = argv[0]; *p != '\0'; ++p)
+		if (*p >= 'A' && *p <= 'Z')
+			*p = *p - 'A' + 'a';
+#endif
+
+	progname = argv[0];
+	return;
+}