From 85a656f4170359d646587544a55efe5963889554 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gero=20M=C3=BCller?= <post@geromueller.de>
Date: Mon, 8 Feb 2016 10:52:14 +0100
Subject: [PATCH] first version

---
 .gitignore     |   1 +
 CMakeLists.txt |  10 ++++
 main.cpp       | 132 +++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 143 insertions(+)
 create mode 100644 CMakeLists.txt
 create mode 100644 main.cpp

diff --git a/.gitignore b/.gitignore
index 35fc333..4d09e18 100644
--- a/.gitignore
+++ b/.gitignore
@@ -62,3 +62,4 @@
 # Debug files
 *.dSYM/
 
+build
\ No newline at end of file
diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..1460840
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,10 @@
+cmake_minimum_required(VERSION 2.6)
+project(journey)
+
+find_package(PkgConfig)
+pkg_check_modules(LIBSYSTEMD REQUIRED libsystemd)
+pkg_check_modules(RE2 REQUIRED re2)
+
+add_executable(journey main.cpp)
+target_link_libraries(journey ${LIBSYSTEMD_LIBRARIES} ${RE2_LIBRARIES})
+install(TARGETS journey RUNTIME DESTINATION bin)
diff --git a/main.cpp b/main.cpp
new file mode 100644
index 0000000..33363e6
--- /dev/null
+++ b/main.cpp
@@ -0,0 +1,132 @@
+#include <cstdio>
+#include <stdlib.h>
+#include <string.h>
+
+#include <fstream>
+#include <iostream>
+
+#include <systemd/sd-journal.h>
+#include "re2/re2.h"
+
+using namespace re2;
+using namespace std;
+
+// ideas: sort by usage
+// configurable regex engine: http://sljit.sourceforge.net/regex_perf.html
+
+void save_cursor(sd_journal* j, const char* filename) {
+	char* cursor;
+	//sd_journal_seek_tail(j);
+	int r = sd_journal_get_cursor(j, &cursor);
+
+	if (r >= 0) {
+		cout << cursor << endl;
+		FILE* f = fopen(filename, "wb");
+
+		if (f) {
+			fwrite(cursor, sizeof(char), strlen(cursor), f);
+			free(cursor);
+		}
+
+		fclose(f);
+	} else {
+		cerr << "Failed to get cursor: " << strerror(-r) << endl;
+	}
+
+}
+
+void seek_cursor(sd_journal* j, const char* filename) {
+	FILE* f = fopen(filename, "rb");
+
+	if (f) {
+		fseek(f, 0, SEEK_END);
+		long int s = ftell(f);
+
+		if (s > 0) {
+			fseek(f, 0, SEEK_SET);
+			char* c = (char*)malloc(s);
+
+			size_t r = fread(c, s, 1, f);
+			if (r == 1) {
+				cout << c << endl;
+				sd_journal_seek_cursor(j, c);
+			} else {
+				cerr << "only " << r << endl;
+			}
+
+			free(c);
+		} else {
+			cerr << "empty file" << endl;
+		}
+
+		fclose(f);
+	} else {
+		fprintf(stderr, "Failed to open load cursor\n");
+	}
+}
+
+int main(int argc, char* argv[]) {
+
+	// read rules
+	ifstream in("test.rules");
+	string line;
+	RE2 re1("^\\w\\{3\\} \\[ :0-9\\]\\{11\\} \\[._\\[:alnum:\\]-\\]\\+ (.*)\\[\\[0-9\\]+\\]: (.*)$");
+
+	while (getline(in, line).good()) {
+		//cout << line << endl;
+	}
+
+
+
+	int r;
+	sd_journal* j;
+
+	r = sd_journal_open(&j, SD_JOURNAL_LOCAL_ONLY);
+
+	if (r < 0) {
+		fprintf(stderr, "Failed to open journal: %s\n", strerror(-r));
+		return 1;
+	}
+
+	seek_cursor(j, "last");
+	// skip current
+	sd_journal_next(j);
+
+	RE2 re(".*pixmap$");
+
+	if (!re.ok()) {
+		printf("pattern error!\n");
+		return 1;
+	}
+
+
+	while (sd_journal_next(j) > 0) {
+		const char* d;
+		size_t l;
+
+		r = sd_journal_get_data(j, "MESSAGE", (const void**)&d, &l);
+
+		if (r < 0) {
+			fprintf(stderr, "Failed to read message field: %s\n", strerror(-r));
+			continue;
+
+		}
+
+		re2::StringPiece input(d, l);
+
+		//if (RE2::FullMatch(input, re)) {
+			// printf("match: %d %d @%d\n", result.data() - subject, result.size(), input.data() - subject);
+			printf("%.*s\n", (int) l, d);
+		//}
+
+		//
+	}
+
+	//sd_journal_previous(j);
+	save_cursor(j, "last");
+
+	sd_journal_close(j);
+
+	return 0;
+}
+