initial checkin

git-svn-id: https://ws10smt.googlecode.com/svn/trunk@2 ec762483-ff6d-05da-a07a-a48fb63a330f

1 files changed, 101 insertions, 0 deletions

diff --git a/decoder/stringlib.h b/decoder/stringlib.h
new file mode 100644
index 00000000..76efee8f
--- /dev/null
+++ b/decoder/stringlib.h
@@ -0,0 +1,101 @@
+#ifndef _STRINGLIB_H_
+
+#include <map>
+#include <vector>
+#include <cctype>
+#include <string>
+
+// read line in the form of either:
+//   source
+//   source ||| target
+// source will be returned as a string, target must be a sentence or
+// a lattice (in PLF format) and will be returned as a Lattice object
+void ParseTranslatorInput(const std::string& line, std::string* input, std::string* ref);
+struct Lattice;
+void ParseTranslatorInputLattice(const std::string& line, std::string* input, Lattice* ref);
+
+inline const std::string Trim(const std::string& str, const std::string& dropChars = " \t") {
+  std::string res = str;
+  res.erase(str.find_last_not_of(dropChars)+1);
+  return res.erase(0, res.find_first_not_of(dropChars));
+}
+
+inline void Tokenize(const std::string& str, char delimiter, std::vector<std::string>* res) {
+  std::string s = str;
+  int last = 0;
+  res->clear();
+  for (int i=0; i < s.size(); ++i)
+    if (s[i] == delimiter) {
+      s[i]=0;
+      if (last != i) {
+        res->push_back(&s[last]);
+      }
+      last = i + 1;
+    }
+  if (last != s.size())
+    res->push_back(&s[last]);
+}
+
+inline std::string LowercaseString(const std::string& in) {
+  std::string res(in.size(),' ');
+  for (int i = 0; i < in.size(); ++i)
+    res[i] = tolower(in[i]);
+  return res;
+}
+
+inline int CountSubstrings(const std::string& str, const std::string& sub) {
+  size_t p = 0;
+  int res = 0;
+  while (p < str.size()) {
+    p = str.find(sub, p);
+    if (p == std::string::npos) break;
+    ++res;
+    p += sub.size();
+  }
+  return res;
+}
+
+inline int SplitOnWhitespace(const std::string& in, std::vector<std::string>* out) {
+  out->clear();
+  int i = 0;
+  int start = 0;
+  std::string cur;
+  while(i < in.size()) {
+    if (in[i] == ' ' || in[i] == '\t') {
+      if (i - start > 0)
+        out->push_back(in.substr(start, i - start));
+      start = i + 1;
+    }
+    ++i;
+  }
+  if (i > start)
+    out->push_back(in.substr(start, i - start));
+  return out->size();
+}
+
+inline void SplitCommandAndParam(const std::string& in, std::string* cmd, std::string* param) {
+  cmd->clear();
+  param->clear();
+  std::vector<std::string> x;
+  SplitOnWhitespace(in, &x);
+  if (x.size() == 0) return;
+  *cmd = x[0];
+  for (int i = 1; i < x.size(); ++i) {
+    if (i > 1) { *param += " "; }
+    *param += x[i];
+  }
+}
+
+void ProcessAndStripSGML(std::string* line, std::map<std::string, std::string>* out);
+
+// given the first character of a UTF8 block, find out how wide it is
+// see http://en.wikipedia.org/wiki/UTF-8 for more info
+inline unsigned int UTF8Len(unsigned char x) {
+  if (x < 0x80) return 1;
+  else if ((x >> 5) == 0x06) return 2;
+  else if ((x >> 4) == 0x0e) return 3;
+  else if ((x >> 3) == 0x1e) return 4;
+  else return 0;
+}
+
+#endif