From 5d342a758c6095b4d30aba0750b54f13b8916f51 Mon Sep 17 00:00:00 2001
From: Antonin Kral <a.kral@bobek.cz>
Date: Wed, 14 Sep 2011 17:08:06 +0200
Subject: Imported Upstream version 2.0.0

---
 util/ramlog.h | 144 ++++++++++++++--------------------------------------------
 1 file changed, 34 insertions(+), 110 deletions(-)

(limited to 'util/ramlog.h')

diff --git a/util/ramlog.h b/util/ramlog.h
index b2f3aa0..d3d5c8f 100644
--- a/util/ramlog.h
+++ b/util/ramlog.h
@@ -1,4 +1,4 @@
-// log.h
+// ramlog.h
 
 /*    Copyright 2009 10gen Inc.
  *
@@ -18,124 +18,48 @@
 #pragma once
 
 #include "log.h"
-#include "mongoutils/html.h"
 
 namespace mongo {
 
     class RamLog : public Tee {
-        enum {
-            N = 128,
-            C = 256
-        };
-        char lines[N][C];
-        unsigned h, n;
-
     public:
-        RamLog() {
-            h = 0; n = 0;
-            for( int i = 0; i < N; i++ )
-                lines[i][C-1] = 0;
-        }
-
-        virtual void write(LogLevel ll, const string& str) {
-            char *p = lines[(h+n)%N];
-            if( str.size() < C )
-                strcpy(p, str.c_str());
-            else
-                memcpy(p, str.c_str(), C-1);
-            if( n < N ) n++;
-            else h = (h+1) % N;
-        }
-
-        void get( vector<const char*>& v) const {
-            for( unsigned x=0, i=h; x++ < n; i=(i+1)%N )
-                v.push_back(lines[i]);
-        }
-
-        static int repeats(const vector<const char *>& v, int i) {
-            for( int j = i-1; j >= 0 && j+8 > i; j-- ) {
-                if( strcmp(v[i]+20,v[j]+20) == 0 ) {
-                    for( int x = 1; ; x++ ) {
-                        if( j+x == i ) return j;
-                        if( i+x>=(int) v.size() ) return -1;
-                        if( strcmp(v[i+x]+20,v[j+x]+20) ) return -1;
-                    }
-                    return -1;
-                }
-            }
-            return -1;
-        }
-
-
-        static string clean(const vector<const char *>& v, int i, string line="") {
-            if( line.empty() ) line = v[i];
-            if( i > 0 && strncmp(v[i], v[i-1], 11) == 0 )
-                return string("           ") + line.substr(11);
-            return v[i];
-        }
-
-        static string color(string line) {
-            string s = str::after(line, "replSet ");
-            if( str::startsWith(s, "warning") || startsWith(s, "error") )
-                return html::red(line);
-            if( str::startsWith(s, "info") ) {
-                if( str::endsWith(s, " up\n") )
-                    return html::green(line);
-                else if( str::contains(s, " down ") || str::endsWith(s, " down\n") )
-                    return html::yellow(line);
-                return line; //html::blue(line);
-            }
-
-            return line;
-        }
+        RamLog( string name );
+
+        virtual void write(LogLevel ll, const string& str);
+
+        void get( vector<const char*>& v) const;
+
+        void toHTML(stringstream& s);
+
+        static RamLog* get( string name );
+        static void getNames( vector<string>& names );
+
+        time_t lastWrite() { return _lastWrite; } // 0 if no writes
+
+    protected:
+        static int repeats(const vector<const char *>& v, int i);
+        static string clean(const vector<const char *>& v, int i, string line="");
+        static string color(string line);
 
         /* turn http:... into an anchor */
-        string linkify(const char *s) {
-            const char *p = s;
-            const char *h = strstr(p, "http://");
-            if( h == 0 ) return s;
-
-            const char *sp = h + 7;
-            while( *sp && *sp != ' ' ) sp++;
-
-            string url(h, sp-h);
-            stringstream ss;
-            ss << string(s, h-s) << "<a href=\"" << url << "\">" << url << "</a>" << sp;
-            return ss.str();
-        }
-
-        void toHTML(stringstream& s) {
-            vector<const char*> v;
-            get( v );
-
-            s << "<pre>\n";
-            for( int i = 0; i < (int)v.size(); i++ ) {
-                assert( strlen(v[i]) > 20 );
-                int r = repeats(v, i);
-                if( r < 0 ) {
-                    s << color( linkify( clean(v,i).c_str() ) );
-                }
-                else {
-                    stringstream x;
-                    x << string(v[i], 0, 20);
-                    int nr = (i-r);
-                    int last = i+nr-1;
-                    for( ; r < i ; r++ ) x << '.';
-                    if( 1 ) {
-                        stringstream r;
-                        if( nr == 1 ) r << "repeat last line";
-                        else r << "repeats last " << nr << " lines; ends " << string(v[last]+4,0,15);
-                        s << html::a("", r.str(), clean(v,i,x.str()));
-                    }
-                    else s << x.str();
-                    s << '\n';
-                    i = last;
-                }
-            }
-            s << "</pre>\n";
-        }
+        static string linkify(const char *s);
 
+    private:
+        ~RamLog(); // want this private as we want to leak so we can use them till the very end
 
+        enum {
+            N = 128, // number of links
+            C = 256 // max size of line
+        };
+        char lines[N][C];
+        unsigned h; // current position
+        unsigned n; // numer of lines stores 0 o N
+        string _name;
+
+        typedef map<string,RamLog*> RM;
+        static mongo::mutex* _namedLock;
+        static RM*  _named;
+        time_t _lastWrite;
     };
 
 }
-- 
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