Initial revision

Packages/Manual_tools/src/cc_extract.C

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+/**************************************************************************
+ 
+  cgal_extract.cc
+  =============================================================
+  Project   : CGAL merger tool for the specification task
+  Function  : main program, command line parameter parsing
+  System    : bison, flex, C++ (g++)
+  Author    : (c) 1995 Lutz Kettner
+  Revision  : $Revision$
+  Date      : $Date$
+ 
+**************************************************************************/
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <stream.h>
+#include <config.h>
+#include <database.h>
+
+
+/* Declarations from syntax.y */
+/* ========================== */
+extern int yydebug;
+void yyparse();
+
+/* Declarations from lex.yy   */
+/* ========================== */
+void init_scanner( FILE* in);
+
+
+/* main */
+/* ==== */
+ 
+#define MaxParameters          1000
+#define MaxOptionalParameters  1000
+#define ErrParameters          10000
+ 
+typedef char Switch;
+ 
+#define NO_SWITCH    0
+#define MINUS_SWITCH 1
+#define PLUS_SWITCH  2
+ 
+Switch  trace_switch  = NO_SWITCH;
+ 
+/* this macro opens a block, in which the switch is detected */
+/* it must be closed with the macro endDetect()              */
+#define detectSwitch( var, text) \
+    if ( (( argv[i][0] == '/' ) || ( argv[i][0] == '-' ) || \
+          ( argv[i][0] == '+' )) && ( strcmp( text, argv[i]+1) == 0)) { \
+        if ( argv[i][0] == '+' ) \
+            var = PLUS_SWITCH; \
+        else \
+            var = MINUS_SWITCH;
+ 
+#define endDetect() \
+        if ( nParameters <= MaxParameters ) \
+            continue; \
+        else \
+            break; \
+    }
+ 
+ 
+ 
+/* >main: main function with standard unix parameter input */
+/* ------------------------------------------------------- */
+ 
+main( int argc, char **argv) {
+    int i;
+    int nParameters = 0;
+    char *parameters[ MaxParameters + 1];
+ 
+    Switch help_switch = NO_SWITCH;
+ 
+    for (i = 1; i < argc; i++) {
+
+        /* check switches */
+        detectSwitch( trace_switch, "trace");
+	    yydebug = 1;
+        endDetect();
+ 
+        detectSwitch( help_switch, "h");
+        endDetect();
+        detectSwitch( help_switch, "H");
+        endDetect();
+        detectSwitch( help_switch, "help");
+        endDetect();
+ 
+        /* else get standard or optional paramters */
+        if ( nParameters < MaxParameters ) {
+            parameters[nParameters ++] = argv[i];
+            continue;
+        }
+ 
+        nParameters = ErrParameters;
+        break;
+    }
+ 
+    if ((nParameters < MaxParameters - MaxOptionalParameters) ||
+        (nParameters > MaxParameters) || (help_switch != NO_SWITCH)) {
+        if (help_switch == NO_SWITCH)
+            cerr << "Error: in parameter list" << endl;
+        cerr << "Usage: cgal_extact [-trace] [<infile> ...]" << endl;
+        cerr << "       -trace       sets the `yydebug' variable of bison"
+             << endl;
+        exit(1);
+    }
+
+    if ( nParameters) {
+        for ( i = 0; i < nParameters; i++) {
+	    FILE* in;
+            if ( (in = fopen( parameters[i], "r")) == NULL) {
+	        fprintf( stderr, "\nbinsort: error: cannot open infile %s.\n",
+                         parameters[0]);
+                exit(1);
+            }
+	    init_scanner( in);
+	    yyparse();
+            fclose( in);
+	}
+    } else {
+        init_scanner( stdin);
+	yyparse();
+    }
+    cout << endl;
+    return 0;
+}
+
+// EOF //
+