1 files changed, 83 insertions, 0 deletions
diff --git a/contrib/examples/highlighter/highlight.c b/contrib/examples/highlighter/highlight.c
new file mode 100644
index 0000000..b03f792
--- /dev/null
+++ b/contrib/examples/highlighter/highlight.c
@@ -0,0 +1,83 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "highlighter.h"
+
+#define TERMINAL_FG_BLACK	"\x1b[30m"
+#define TERMINAL_FG_RED		"\x1b[31m"
+#define TERMINAL_FG_GREEN	"\x1b[32m"
+#define TERMINAL_FG_YELLOW	"\x1b[33m"
+#define TERMINAL_FG_BLUE	"\x1b[34m"
+#define TERMINAL_FG_MAGENTA	"\x1b[35m"
+#define TERMINAL_FG_CYAN	"\x1b[36m"
+#define TERMINAL_FG_WHITE	"\x1b[37m"
+#define TERMINAL_FG_DEFAULT	"\x1b[39m"
+
+#define TERMINAL_BG_BLACK	"\x1b[40m"
+#define TERMINAL_BG_RED		"\x1b[41m"
+#define TERMINAL_BG_GREEN	"\x1b[42m"
+#define TERMINAL_BG_YELLOW	"\x1b[43m"
+#define TERMINAL_BG_BLUE	"\x1b[44m"
+#define TERMINAL_BG_MAGENTA	"\x1b[45m"
+#define TERMINAL_BG_CYAN	"\x1b[46m"
+#define TERMINAL_BG_WHITE	"\x1b[47m"
+#define TERMINAL_BG_DEFAULT	"\x1b[49m"
+
+#define TERMINAL_BOLD		"\x1b[1m"
+#define TERMINAL_NO_BOLD	"\x1b[22m"
+#define TERMINAL_UNDERLINE	"\x1b[4m"
+#define TERMINAL_NO_UNDERLINE	"\x1b[24m"
+
+#define TERMINAL_RESET		"\x1b[0m"
+
+static const char *colormap[] = {
+	[HighlightSection] = TERMINAL_FG_BLACK TERMINAL_BOLD,
+	[HighlightField] = TERMINAL_FG_BLUE TERMINAL_BOLD,
+	[HighlightPrivateKey] = TERMINAL_FG_YELLOW TERMINAL_BOLD,
+	[HighlightPublicKey] = TERMINAL_FG_YELLOW TERMINAL_BOLD,
+	[HighlightPresharedKey] = TERMINAL_FG_YELLOW TERMINAL_BOLD,
+	[HighlightIP] = TERMINAL_FG_GREEN,
+	[HighlightCidr] = TERMINAL_FG_YELLOW,
+	[HighlightHost] = TERMINAL_FG_GREEN TERMINAL_BOLD,
+	[HighlightPort] = TERMINAL_FG_MAGENTA,
+	[HighlightMTU] = TERMINAL_FG_BLUE,
+	[HighlightKeepalive] = TERMINAL_FG_BLUE,
+	[HighlightComment] = TERMINAL_FG_CYAN,
+	[HighlightDelimiter] = TERMINAL_FG_CYAN,
+#ifndef MOBILE_WGQUICK_SUBSET
+	[HighlightTable] = TERMINAL_FG_BLUE,
+	[HighlightFwMark] = TERMINAL_FG_BLUE,
+	[HighlightSaveConfig] = TERMINAL_FG_BLUE,
+	[HighlightCmd] = TERMINAL_FG_WHITE,
+#endif
+	[HighlightError] = TERMINAL_FG_RED TERMINAL_UNDERLINE
+};
+
+int main(int argc, char *argv[])
+{
+	char input[1024 * 1024];
+	struct highlight_span *spans;
+	size_t last = 0, total_len;
+
+	total_len = fread(input, 1, sizeof(input) - 1, stdin);
+	input[total_len] = '\0';
+	spans = highlight_config(input);
+
+	fputs(TERMINAL_RESET, stdout);
+	for (struct highlight_span *span = spans; span->type != HighlightEnd; ++span) {
+		fwrite(input + last, 1, span->start - last, stdout);
+		fputs(colormap[span->type], stdout);
+		fwrite(input + span->start, 1, span->len, stdout);
+		fputs(TERMINAL_RESET, stdout);
+		last = span->start + span->len;
+	}
+	fwrite(input + last, 1, total_len - last, stdout);
+
+	free(spans);
+	return 0;
+}