From: Patrik Gornicz <Gornicz.P@gmail.com>
Date: Fri, 22 Aug 2008 19:29:54 +0000 (-0400)
Subject: wip: config reader, reading input
X-Git-Tag: physics-premerge~127
X-Git-Url: http://gitweb.pgornicz.com/gitweb.cgi?a=commitdiff_plain;h=07df2aea152374f1d2be55bfa0a05ba55fc1a112;p=libbear.git

wip: config reader, reading input
---

diff --git a/configs/test.cfg b/configs/test.cfg
index e965047..c4d7b7f 100644
--- a/configs/test.cfg
+++ b/configs/test.cfg
@@ -1 +1,35 @@
 Hello
+
+roger=flag0000
+roger=flag0001 
+roger= flag0010
+roger= flag0011 
+roger =flag0100
+roger =flag0101 
+roger = flag0110
+roger = flag0111 
+ roger=flag1000
+ roger=flag1001 
+ roger= flag1010
+ roger= flag1011 
+ roger =flag1100
+ roger =flag1101 
+ roger = flag1110
+ roger = flag1111 
+
+roger=flag0000
+roger=flag0002	
+roger=	flag0020
+roger=	flag0022	
+roger	=flag0200
+roger	=flag0202	
+roger	=	flag0220
+roger	=	flag0222	
+	roger=flag2000
+	roger=flag2002	
+	roger=	flag2020
+	roger=	flag2022	
+	roger	=flag2200
+	roger	=flag2202	
+	roger	=	flag2220
+	roger	=	flag2222	
diff --git a/src/config/reader.cpp b/src/config/reader.cpp
index ce35ab8..de6da20 100644
--- a/src/config/reader.cpp
+++ b/src/config/reader.cpp
@@ -30,6 +30,7 @@ char* configDir = "../configs/";
 /// ***** Private Method Headers *****
 
 void processLine(const string& str, keyMap* map);
+bool extractLine(const string& str, string* name, string* value);
 
 /// ***** Private Variables *****
 
@@ -68,5 +69,108 @@ void readConfigs(keyMap* map)
 
 void processLine(const string& str, keyMap* map)
 {
-    cout << str << endl;
+    string name;
+    string value;
+
+    bool extracted;
+
+    extracted = extractLine(str, &name, &value);
+
+    if(extracted)
+    {
+        cout << name << endl;
+        cout << value << endl;
+    }
+}
+
+/*
+ * Return true iff the string str, had a name and value extracted and saved in
+ * name and value. Otherwise return false and leave name and value alone.
+ */
+bool extractLine(const string& str, string* name, string* value)
+{
+    /*
+     * state    := 0 if eating leading name whitespace
+     *          := 1 if saving name
+     *          := 2 if eating trailing name whitespace
+     *          := 3 if eating leading value whitespace
+     *          := 4 if saving value
+     *          := 5 if all is done and well
+     */
+    int state = 0;
+
+    int char_pos = 0;
+
+    int name_start;
+    int name_end;
+
+    int value_start;
+    int value_end;
+
+    const char* c_str = str.c_str();
+
+    while(true)
+    {
+        if(c_str[char_pos] == 0 && state != 4)
+            return false;
+
+        switch (state)
+        {
+            case 0:
+                if(c_str[char_pos] != ' '
+                && c_str[char_pos] != '\t')
+                {
+                    state++;
+                    name_start = char_pos;
+                }
+                break;
+            case 1:
+                if(c_str[char_pos] == ' '
+                || c_str[char_pos] == '\t'
+                || c_str[char_pos] == '=')
+                {
+                    state++;
+                    name_end = char_pos;
+                }
+                if(c_str[char_pos] == '=')
+                    char_pos--; // decrement to stay on this char
+                break;
+            case 2:
+                if(c_str[char_pos] == '=')
+                {
+                    state++;
+                }
+                break;
+            case 3:
+                if(c_str[char_pos] != ' '
+                && c_str[char_pos] != '\t')
+                {
+                    state++;
+                    value_start = char_pos;
+                }
+                break;
+            case 4:
+                if(c_str[char_pos] == ' '
+                || c_str[char_pos] == '\t'
+                || c_str[char_pos] == 0)
+                {
+                    state++;
+                    value_end = char_pos;
+                }
+                break;
+        }
+
+        if(state == 5)
+            break;
+
+        char_pos++;
+    }
+
+    name->clear();
+    value->clear();
+
+    name->replace(0, 0, c_str, name_start, name_end-name_start);
+    value->replace(0, 0, c_str, value_start, value_end-value_start);
+
+    return true;
 }