mirror of
https://github.com/tstack/lnav
synced 2024-11-01 21:40:34 +00:00
174 lines
5.5 KiB
C++
174 lines
5.5 KiB
C++
/**
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* Copyright (c) 2007-2012, Timothy Stack
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* * Neither the name of Timothy Stack nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <fstream>
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#include <iostream>
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#include "pcrepp.hh"
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#include "data_scanner.hh"
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#include "data_parser.hh"
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#include "log_format.hh"
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using namespace std;
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const char *TMP_NAME = "scanned.tmp";
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int main(int argc, char *argv[])
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{
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int c, retval = EXIT_SUCCESS;
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bool prompt = false;
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while ((c = getopt(argc, argv, "p")) != -1) {
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switch (c) {
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case 'p':
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prompt = true;
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break;
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default:
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retval = EXIT_FAILURE;
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break;
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}
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}
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argc -= optind;
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argv += optind;
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if (retval != EXIT_SUCCESS) {}
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else if (argc < 1) {
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fprintf(stderr, "error: expecting file name argument(s)\n");
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retval = EXIT_FAILURE;
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}
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else {
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for (int lpc = 0; lpc < argc; lpc++) {
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istream *in;
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FILE * out;
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if (strcmp(argv[lpc], "-") == 0) {
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in = &cin;
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}
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else {
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ifstream *ifs = new ifstream(argv[lpc]);
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if (!ifs->is_open()) {
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fprintf(stderr, "error: unable to open file\n");
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retval = EXIT_FAILURE;
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}
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else {
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in = ifs;
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}
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}
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if ((out = fopen(TMP_NAME, "w")) == NULL) {
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fprintf(stderr, "error: unable to temporary file for writing\n");
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retval = EXIT_FAILURE;
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}
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else {
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auto_ptr<log_format> format;
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char log_line[2048];
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bool found = false;
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char cmd[2048];
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string line;
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int rc;
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getline(*in, line);
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if (strcmp(argv[lpc], "-") == 0) {
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line = " " + line;
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}
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strcpy(log_line, &line[13]);
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vector<log_format *> &root_formats = log_format::get_root_formats();
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vector<log_format *>::iterator iter;
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vector<logline> index;
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for (iter = root_formats.begin();
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iter != root_formats.end() && !found;
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++iter) {
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(*iter)->clear();
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if ((*iter)->scan(index, 13, log_line, strlen(log_line))) {
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format = (*iter)->specialized();
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found = true;
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}
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}
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string sub_line = line.substr(13);
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struct line_range body = { 0, sub_line.length() };
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if (format.get() != NULL) {
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vector<logline_value> ll_values;
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string_attrs_t sa;
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format->annotate(sub_line, sa, ll_values);
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body = find_string_attr_range(sa, "body");
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}
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data_parser::TRACE_FILE = fopen("scanned.dpt", "w");
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data_scanner ds(sub_line, body.lr_start, sub_line.length());
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data_parser dp(&ds);
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dp.parse();
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dp.print(out, dp.dp_pairs);
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fclose(out);
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sprintf(cmd, "diff -u %s %s", argv[lpc], TMP_NAME);
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rc = system(cmd);
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if (rc != 0) {
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if (prompt) {
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char resp[4];
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printf("Would you like to update the original file? (y/N) ");
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fflush(stdout);
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scanf("%3s", resp);
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if (strcasecmp(resp, "y") == 0) {
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rename(TMP_NAME, argv[lpc]);
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}
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else{
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retval = EXIT_FAILURE;
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}
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}
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else {
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fprintf(stderr, "error: mismatch\n");
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retval = EXIT_FAILURE;
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}
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}
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fclose(data_parser::TRACE_FILE);
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}
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}
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}
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return retval;
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}
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