wireguard-tools/contrib/highlighter/highlight.c

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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2015-2020 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;
}