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#include "sentence_pair.h"
#include <queue>
#include <iostream>
#include <string>
#include <vector>
#include <utility>
#include <set>
#include "tdict.h"
#include "wordid.h"
#include "array2d.h"
using namespace std;
namespace {
inline bool IsWhitespace(char c) { return c == ' ' || c == '\t'; }
inline void SkipWhitespace(const char* buf, int* ptr) {
while (buf[*ptr] && IsWhitespace(buf[*ptr])) { ++(*ptr); }
}
}
void AnnotatedParallelSentence::Reset() {
f.clear();
e.clear();
e_aligned.clear();
f_aligned.clear();
aligns_by_fword.clear();
aligned.clear();
span_types.clear();
}
void AnnotatedParallelSentence::AllocateForAlignment() {
f_len = f.size();
e_len = e.size();
aligned.resize(f_len, e_len, false);
f_aligned.resize(f_len, 0);
e_aligned.resize(e_len, 0);
aligns_by_fword.resize(f_len);
span_types.resize(e_len, e_len+1);
}
// read an alignment point of the form X-Y where X and Y are strings
// of digits. if permit_col is true, the right edge will be determined
// by the presence of a colon
int AnnotatedParallelSentence::ReadAlignmentPoint(const char* buf,
const int start,
const int end,
const bool permit_col,
short* a,
short* b) {
if (end - start < 3) {
cerr << "Alignment point badly formed: " << string(buf, start, end-start) << endl; abort();
}
int c = start;
*a = 0;
while(c < end && buf[c] != '-') {
if (buf[c] < '0' || buf[c] > '9') {
cerr << "Alignment point badly formed: " << string(buf, start, end-start) << endl;
abort();
}
(*a) *= 10;
(*a) += buf[c] - '0';
++c;
}
++c;
if (c >= end) {
cerr << "Alignment point badly formed: " << string(buf, start, end-start) << endl; abort();
}
(*b) = 0;
while(c < end && (!permit_col || (permit_col && buf[c] != ':'))) {
if (buf[c] < '0' || buf[c] > '9') {
cerr << "Alignment point badly formed: " << string(buf, start, end-start) << endl;
abort();
}
(*b) *= 10;
(*b) += buf[c] - '0';
++c;
}
return c;
}
void AnnotatedParallelSentence::ParseAlignmentPoint(const char* buf, int start, int end) {
short a, b;
ReadAlignmentPoint(buf, start, end, false, &a, &b);
assert(a < f_len);
assert(b < e_len);
aligned(a,b) = true;
++f_aligned[a];
++e_aligned[b];
aligns_by_fword[a].push_back(make_pair(a,b));
// cerr << a << " " << b << endl;
}
void AnnotatedParallelSentence::ParseSpanLabel(const char* buf, int start, int end) {
short a,b;
int c = ReadAlignmentPoint(buf, start, end, true, &a, &b) + 1;
if (buf[c-1] != ':' || c >= end) {
cerr << "Span badly formed: " << string(buf, start, end-start) << endl; abort();
}
// cerr << a << " " << b << " " << string(buf,c,end-c) << endl;
span_types(a,b).push_back(-TD::Convert(string(buf, c, end-c)));
}
// INPUT FORMAT
// ein haus ||| a house ||| 0-0 1-1 ||| 0-0:DT 1-1:NN 0-1:NP
void AnnotatedParallelSentence::ParseInputLine(const char* buf) {
Reset();
int ptr = 0;
SkipWhitespace(buf, &ptr);
int start = ptr;
int state = 0; // 0 = French, 1 = English, 2 = Alignment, 3 = Spans
while(char c = buf[ptr]) {
if (!IsWhitespace(c)) { ++ptr; continue; } else {
if (ptr - start == 3 && buf[start] == '|' && buf[start+1] == '|' && buf[start+2] == '|') {
++state;
if (state == 4) { cerr << "Too many fields (ignoring):\n " << buf << endl; return; }
if (state == 2) {
// cerr << "FLEN=" << f->size() << " ELEN=" << e->size() << endl;
AllocateForAlignment();
}
SkipWhitespace(buf, &ptr);
start = ptr;
continue;
}
switch (state) {
case 0: f.push_back(TD::Convert(string(buf, start, ptr-start))); break;
case 1: e.push_back(TD::Convert(string(buf, start, ptr-start))); break;
case 2: ParseAlignmentPoint(buf, start, ptr); break;
case 3: ParseSpanLabel(buf, start, ptr); break;
default: cerr << "Can't happen\n"; abort();
}
SkipWhitespace(buf, &ptr);
start = ptr;
}
}
if (ptr > start) {
switch (state) {
case 0: f.push_back(TD::Convert(string(buf, start, ptr-start))); break;
case 1: e.push_back(TD::Convert(string(buf, start, ptr-start))); break;
case 2: ParseAlignmentPoint(buf, start, ptr); break;
case 3: ParseSpanLabel(buf, start, ptr); break;
default: cerr << "Can't happen\n"; abort();
}
}
if (state < 2) {
cerr << "Not enough fields: " << buf << endl;
abort();
}
if (e.empty() || f.empty()) {
cerr << "Sentences must not be empty: " << buf << endl;
}
}
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