103 lines
2.1 KiB
C++
103 lines
2.1 KiB
C++
#include <iostream>
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#include <cstdio>
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#include <string>
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using namespace std;
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struct Decoder
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{
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enum { stTop, stEscape, stCSI } state;
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string line;
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bool inHeader;
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int level;
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Decoder()
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{
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state = stTop;
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line = "";
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inHeader = false;
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level = 0;
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}
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void pushChar(char c);
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void finishLine();
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};
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void Decoder::pushChar(char c)
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{
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switch (state) {
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case stTop:
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if (c == '\e') {
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state = stEscape;
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} else if (c == '\n') {
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finishLine();
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} else if (c == '<')
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line += "<";
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else if (c == '&')
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line += "&";
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else
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line += c;
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break;
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case stEscape:
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if (c == '[')
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state = stCSI;
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else
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state = stTop; /* !!! wrong */
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break;
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case stCSI:
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if (c >= 0x40 && c != 0x7e) {
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state = stTop;
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switch (c) {
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case 'p':
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if (line.size()) finishLine();
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level++;
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inHeader = true;
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cout << "<nest>" << endl;
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break;
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case 'q':
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if (line.size()) finishLine();
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if (level > 0) {
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level--;
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cout << "</nest>" << endl;
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} else
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cerr << "not enough nesting levels" << endl;
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break;
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}
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}
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break;
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}
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}
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void Decoder::finishLine()
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{
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string tag = inHeader ? "head" : "line";
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cout << "<" << tag << ">";
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cout << line;
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cout << "</" << tag << ">" << endl;
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line = "";
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inHeader = false;
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}
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int main(int argc, char * * argv)
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{
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Decoder dec;
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int c;
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cout << "<logfile>" << endl;
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while ((c = getchar()) != EOF) {
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dec.pushChar(c);
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}
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cout << "</logfile>" << endl;
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}
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