1 files changed, 86 insertions, 0 deletions
diff --git a/src/parser.h b/src/parser.h
new file mode 100644
index 00000000..2bdc4622
--- /dev/null
+++ b/src/parser.h
@@ -0,0 +1,86 @@
+#ifndef _PARSER_H
+#define _PARSER_H
+
+#include "utils.h"
+
+namespace ledger {
+
+class account_t;
+class journal_t;
+
+class parser_t
+{
+ public:
+  virtual ~parser_t() {}
+
+  virtual bool test(std::istream& in) const = 0;
+
+  virtual unsigned int parse(std::istream&	 in,
+			     journal_t *	 journal,
+			     account_t *	 master        = NULL,
+			     const string * original_file = NULL) = 0;
+};
+
+DECLARE_EXCEPTION(parse_exception);
+
+/************************************************************************
+ *
+ * General utility parsing functions
+ */
+
+inline char * skip_ws(char * ptr) {
+  while (*ptr == ' ' || *ptr == '\t' || *ptr == '\n')
+    ptr++;
+  return ptr;
+}
+
+inline char peek_next_nonws(std::istream& in) {
+  char c = in.peek();
+  while (! in.eof() && std::isspace(c)) {
+    in.get(c);
+    c = in.peek();
+  }
+  return c;
+}
+
+#define READ_INTO(str, targ, size, var, cond) {				\
+  char * _p = targ;							\
+  var = str.peek();							\
+  while (! str.eof() && var != '\n' && (cond) && _p - targ < size) {	\
+    str.get(var);							\
+    if (str.eof())							\
+      break;								\
+    if (var == '\\') {							\
+      str.get(var);							\
+      if (in.eof())							\
+	break;								\
+    }									\
+    *_p++ = var;							\
+    var = str.peek();							\
+  }									\
+  *_p = '\0';								\
+}
+
+#define READ_INTO_(str, targ, size, var, idx, cond) {			\
+  char * _p = targ;							\
+  var = str.peek();							\
+  while (! str.eof() && var != '\n' && (cond) && _p - targ < size) {	\
+    str.get(var);							\
+    if (str.eof())							\
+      break;								\
+    idx++;								\
+    if (var == '\\') {							\
+      str.get(var);							\
+      if (in.eof())							\
+	break;								\
+      idx++;								\
+    }									\
+    *_p++ = var;							\
+    var = str.peek();							\
+  }									\
+  *_p = '\0';								\
+}
+
+} // namespace ledger
+
+#endif // _PARSER_H