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#include <vector>
#include <iostream>
#include <cstdio>
#include <string>
using namespace std;
struct Decoder
{
enum { stTop, stEscape, stCSI } state;
string line;
bool inHeader;
int level;
vector<int> args;
bool newNumber;
int priority;
bool ignoreLF;
int lineNo, charNo;
Decoder()
{
state = stTop;
line = "";
inHeader = false;
level = 0;
priority = 1;
ignoreLF = false;
lineNo = 1;
charNo = 0;
}
void pushChar(char c);
void finishLine();
};
void Decoder::pushChar(char c)
{
if (c == '\n') {
lineNo++;
charNo = 0;
} else charNo++;
switch (state) {
case stTop:
if (c == '\e') {
state = stEscape;
} else if (c == '\n' && !ignoreLF) {
finishLine();
} else line += c;
break;
case stEscape:
if (c == '[') {
state = stCSI;
args.clear();
newNumber = true;
} else
state = stTop; /* !!! wrong */
break;
case stCSI:
if (c >= 0x40 && c != 0x7e) {
state = stTop;
switch (c) {
case 'p':
if (line.size()) finishLine();
level++;
inHeader = true;
cout << "<nest>" << endl;
priority = args.size() >= 1 ? args[0] : 1;
break;
case 'q':
if (line.size()) finishLine();
if (level > 0) {
level--;
cout << "</nest>" << endl;
} else
cerr << "not enough nesting levels at line "
<< lineNo << ", character " << charNo << endl;
break;
case 's':
if (line.size()) finishLine();
priority = args.size() >= 1 ? args[0] : 1;
break;
case 'a':
ignoreLF = true;
break;
case 'b':
ignoreLF = false;
break;
}
} else if (c >= '0' && c <= '9') {
int n = 0;
if (!newNumber) {
n = args.back() * 10;
args.pop_back();
}
n += c - '0';
args.push_back(n);
}
break;
}
}
void Decoder::finishLine()
{
string storeDir = "/nix/store/";
int sz = storeDir.size();
string tag = inHeader ? "head" : "line";
cout << "<" << tag;
if (priority != 1) cout << " priority='" << priority << "'";
cout << ">";
for (int i = 0; i < line.size(); i++) {
if (line[i] == '<') cout << "<";
else if (line[i] == '&') cout << "&";
else if (i + sz + 33 < line.size() &&
string(line, i, sz) == storeDir &&
line[i + sz + 32] == '-')
{
int j = i + sz + 32;
/* skip name */
while (!strchr("/\n\r\t ()[]:;?<>", line[j])) j++;
int k = j;
while (!strchr("\n\r\t ()[]:;?<>", line[k])) k++;
// !!! escaping
cout << "<storeref>"
<< "<storedir>"
<< string(line, i, sz)
<< "</storedir>"
<< "<hash>"
<< string(line, i + sz, 32)
<< "</hash>"
<< "<name>"
<< string(line, i + sz + 32, j - (i + sz + 32))
<< "</name>"
<< "<path>"
<< string(line, j, k - j)
<< "</path>"
<< "</storeref>";
i = k - 1;
} else cout << line[i];
}
cout << "</" << tag << ">" << endl;
line = "";
inHeader = false;
priority = 1;
}
int main(int argc, char * * argv)
{
Decoder dec;
int c;
cout << "<logfile>" << endl;
while ((c = getchar()) != EOF) {
dec.pushChar(c);
}
cout << "</logfile>" << endl;
}
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