added parseCmdLine module

git-svn-id: http://apu.dw.local/svnusers/JoshHoltrop/pppc/trunk@45 8131a0b2-b21c-1c47-bd6a-f003126495bd

Makefile

@@ -1,6 +1,6 @@
 
 TARGET   := pppc.exe
-OBJS     := pppc.o session_notification.o resources.o pport.o
+OBJS     := pppc.o session_notification.o resources.o pport.o parseCmdLine.o
 CXXFLAGS := -O2 -Wall
 LDFLAGS  := -mwindows
 

parseCmdLine.cc

@@ -0,0 +1,111 @@
+
+#include "parseCmdLine.h"
+#include <iostream>
+using namespace std;
+
+static std::string trim(const std::string & orig)
+{
+    const char ws[] = " \t\r\n\v\f";
+    size_t first = orig.find_first_not_of(ws);
+    size_t last = orig.find_last_not_of(ws);
+    if (first == string::npos || last == string::npos)
+    {
+        return "";
+    }
+    return string(orig, first, last - first + 1);
+}
+
+std::vector<std::string> parseCmdLine(char * cmdline)
+{
+    enum { WSSKIP, GATHERING, SQUOTE, DQUOTE } state = WSSKIP;
+    vector<string> args;
+    string arg;
+
+    for (; *cmdline; cmdline++)
+    {
+        char c = *cmdline;
+        switch (state)
+        {
+            case WSSKIP:
+                if (!isspace(c))
+                {
+                    if (c == '\'')
+                    {
+                        state = SQUOTE;
+                        arg = "";
+                    }
+                    else if (c == '"')
+                    {
+                        state = DQUOTE;
+                        arg = "";
+                    }
+                    else
+                    {
+                        state = GATHERING;
+                        arg = c;
+                    }
+                }
+                break;
+            case GATHERING:
+                if (c == '\'')
+                {
+                    state = SQUOTE;
+                }
+                else if (c == '"')
+                {
+                    state = DQUOTE;
+                }
+                else if (isspace(c))
+                {
+                    args.push_back(arg);
+                    state = WSSKIP;
+                }
+                else
+                {
+                    arg += c;
+                }
+                break;
+            case SQUOTE:
+                if (c == '\'')
+                {
+                    state = GATHERING;
+                }
+                else
+                {
+                    arg += c;
+                }
+                break;
+            case DQUOTE:
+                if (c == '"')
+                {
+                    state = GATHERING;
+                }
+                else
+                {
+                    arg += c;
+                }
+                break;
+        }
+    }
+    switch (state)
+    {
+        case WSSKIP:
+            break;
+        case GATHERING:
+            args.push_back(arg);
+            break;
+        case SQUOTE:
+            cerr << "Warning: unmatched '\\'' character!" << endl;
+            break;
+        case DQUOTE:
+            cerr << "Warning: unmatched '\"' character!" << endl;
+            break;
+    }
+
+    for (int args_len = args.size(), i = 0; i < args_len; i++)
+    {
+        args[i] = trim(args[i]);
+    }
+
+    return args;
+}

parseCmdLine.h

@@ -0,0 +1,10 @@
+
+#ifndef PARSECMDLINE_H
+#define PARSECMDLINE_H
+
+#include <vector>
+#include <string>
+
+std::vector<std::string> parseCmdLine(char * cmdline);
+
+#endif

pppc.cc

@@ -2,9 +2,12 @@
 #include <windows.h>
 #include <string.h>
 #include <iostream>
+#include <vector>
+#include <string>
 #include "session_notification.h"
 #include "pport.h"
 #include "resources.h"
+#include "parseCmdLine.h"
 using namespace std;
 
 #define APP_NAME "Parallel Port Power Controller"
@@ -21,6 +24,8 @@ int WinMain(
     LPSTR     lpCmdLine,
     int       nCmdShow)
 {
+    vector<string> args = parseCmdLine(lpCmdLine);
+
     m_hInstance = hInstance;
 
     /* Load the application icon */