bee

packages/bee/glucose-4/utils/ParseUtils.h

@@ -0,0 +1,155 @@
+/************************************************************************************[ParseUtils.h]
+Copyright (c) 2003-2006, Niklas Een, Niklas Sorensson
+Copyright (c) 2007-2010, Niklas Sorensson
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
+associated documentation files (the "Software"), to deal in the Software without restriction,
+including without limitation the rights to use, copy, modify, merge, publish, distribute,
+sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or
+substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
+NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT
+OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+**************************************************************************************************/
+
+#ifndef Glucose_ParseUtils_h
+#define Glucose_ParseUtils_h
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <math.h>
+
+//#include <zlib.h> // comment out to make it easy to compile PL-Minisat in Windows
+
+namespace Glucose {
+
+//-------------------------------------------------------------------------------------------------
+// A simple buffered character stream class:
+
+static const int buffer_size = 1048576;
+
+// next code was comment out to make it easy to compile PL-Minisat in Windows
+/*
+
+class StreamBuffer {
+    gzFile        in;
+    unsigned char buf[buffer_size];
+    int           pos;
+    int           size;
+
+    void assureLookahead() {
+        if (pos >= size) {
+            pos  = 0;
+            size = gzread(in, buf, sizeof(buf)); } }
+
+public:
+    explicit StreamBuffer(gzFile i) : in(i), pos(0), size(0) { assureLookahead(); }
+
+    int  operator *  () const { return (pos >= size) ? EOF : buf[pos]; }
+    void operator ++ ()       { pos++; assureLookahead(); }
+    int  position    () const { return pos; }
+};
+
+
+//-------------------------------------------------------------------------------------------------
+// End-of-file detection functions for StreamBuffer and char*:
+
+
+static inline bool isEof(StreamBuffer& in) { return *in == EOF;  }
+static inline bool isEof(const char*   in) { return *in == '\0'; }
+
+*/
+
+//-------------------------------------------------------------------------------------------------
+// Generic parse functions parametrized over the input-stream type.
+
+
+template<class B>
+static void skipWhitespace(B& in) {
+    while ((*in >= 9 && *in <= 13) || *in == 32)
+        ++in; }
+
+
+template<class B>
+static void skipLine(B& in) {
+    for (;;){
+        if (isEof(in)) return;
+        if (*in == '\n') { ++in; return; }
+        ++in; } }
+
+template<class B>
+static double parseDouble(B& in) { // only in the form X.XXXXXe-XX
+    bool    neg= false;
+	double accu = 0.0;
+	double currentExponent = 1;
+	int exponent;
+	
+    skipWhitespace(in);
+    if(*in == EOF) return 0;
+    if      (*in == '-') neg = true, ++in;
+    else if (*in == '+') ++in;
+    if (*in < '1' || *in > '9') printf("PARSE ERROR! Unexpected char: %c\n", *in), exit(3);
+	accu = (double)(*in - '0');
+	++in;
+	if (*in != '.') printf("PARSE ERROR! Unexpected char: %c\n", *in),exit(3);
+	++in; // skip dot
+	currentExponent = 0.1;
+    while (*in >= '0' && *in <= '9')
+        accu = accu + currentExponent * ((double)(*in - '0')),
+		currentExponent /= 10,
+        ++in;
+	if (*in != 'e') printf("PARSE ERROR! Unexpected char: %c\n", *in),exit(3);
+	++in; // skip dot
+	exponent = parseInt(in); // read exponent
+	accu *= pow(10,exponent);
+	return neg ? -accu:accu;
+}
+
+
+template<class B>
+static int parseInt(B& in) {
+    int     val = 0;
+    bool    neg = false;
+    skipWhitespace(in);
+    if      (*in == '-') neg = true, ++in;
+    else if (*in == '+') ++in;
+    if (*in < '0' || *in > '9') fprintf(stderr, "PARSE ERROR! Unexpected char: %c\n", *in), exit(3);
+    while (*in >= '0' && *in <= '9')
+        val = val*10 + (*in - '0'),
+        ++in;
+    return neg ? -val : val; }
+
+
+// String matching: in case of a match the input iterator will be advanced the corresponding
+// number of characters.
+template<class B>
+static bool match(B& in, const char* str) {
+    int i;
+    for (i = 0; str[i] != '\0'; i++)
+        if (in[i] != str[i])
+            return false;
+
+    in += i;
+
+    return true; 
+}
+
+// String matching: consumes characters eagerly, but does not require random access iterator.
+template<class B>
+static bool eagerMatch(B& in, const char* str) {
+    for (; *str != '\0'; ++str, ++in)
+        if (*str != *in)
+            return false;
+    return true; }
+
+
+//=================================================================================================
+}
+
+#endif