Initial work for an installer for OS X

2003-09-08 20:20:57 +00:00
parent 3bca704638
commit 678115e37f
5 changed files with 570 additions and 0 deletions
@@ -0,0 +1,238 @@
+/*
+ *  Processor.cpp
+ *  stepmania
+ *
+ *  Created by Steve Checkoway on Sun Sep 07 2003.
+ *  Copyright (c) 2003 Steve Checkoway. All rights reserved.
+ *
+ */
+
+using namespace std;
+
+#include <vector>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include "StdString.h"
+#include "Processor.h"
+
+void split(const CString& Source, const CString& Deliminator, vector<CString>& AddIt)
+{
+    unsigned startpos = 0;
+
+    do {
+        unsigned pos = Source.find(Deliminator, startpos);
+        if (pos == Source.npos) pos=Source.size();
+
+        CString AddCString = Source.substr(startpos, pos-startpos);
+        AddIt.push_back(AddCString);
+
+        startpos=pos+Deliminator.size();
+    } while (startpos <= Source.size());
+}
+
+bool IsAVar(const CString& var)
+{
+    return var[0] == '$';
+}
+
+CString StripVar(const CString& var)
+{
+    if (!IsAVar(var))
+        return var;
+    return var.substr(1, var.npos);
+}
+
+void Processor::ProcessLine(const CString& line, unsigned& nextLine)
+{
+    CStringArray parts;
+
+    split(line, ":", parts);
+
+    if (!mInstalling)
+    {
+        if (parts[0] == "FILE")
+        {
+            if (parts.size() != 3)
+                goto error;
+            (*mHandleFile)(parts[1], mPath, true);
+        }
+        ++nextLine;
+        return;
+    }
+
+    if (parts[0] == "LABEL")
+    {
+        if (parts.size() != 2)
+            goto error;
+        if (mDoGoto && parts[1] == mLabel)
+        {
+            mDoGoto = false;
+            mLabel = "";
+        }
+        mLabels[parts[1]] = ++nextLine; // set mLabel to be the next line
+        return;
+    }
+    
+    if (mDoGoto)
+    {
+        ++nextLine;
+        return;
+    }
+
+    if (parts[0] == "GOTO")
+    {
+        if (parts.size() != 2)
+            goto error;
+        if (parts[1] == "")
+            goto error;
+        mLabel = parts[1];
+        if (mLabels.find(mLabel) != mLabels.end())
+        {
+            mReturnStack.push(nextLine + 1);
+            nextLine = mLabels[mLabel];
+            mLabel = "";
+            return;
+        }
+        mDoGoto = true;
+        mReturnStack.push(++nextLine);
+        return;
+    }
+
+    if (parts[0] == "IF")
+    {
+        if (parts.size() != 4)
+            goto error;
+        if (ResolveConditional(parts[1]))
+            mLabel = parts[2];
+        else
+            mLabel = parts[3];
+        if (mLabel == "")
+        {
+            ++nextLine;
+            return;
+        }
+        mReturnStack.push(nextLine + 1);
+        if (mLabels.find(mLabel) != mLabels.end())
+        {
+            nextLine = mLabels[mLabel];
+            mLabel = "";
+            return;
+        }
+        mDoGoto = true;
+        ++nextLine;
+        return;
+    }
+
+    if (parts[0] == "FILE")
+    {
+        if (parts.size() != 3)
+            goto error;
+        bool overwrite = ResolveConditional(parts[2]);
+        (*mHandleFile)(parts[1], mPath, overwrite);
+
+        ++nextLine;
+        return;
+    }
+
+    if (parts[0] == "RETURN")
+    {
+        if (mReturnStack.empty())
+            nextLine = unsigned(-1); // quite large
+        else
+        {
+            nextLine = mReturnStack.top();
+            mReturnStack.pop();
+        }
+        return;
+    }
+
+    if (parts[0] == "GETPATH")
+    {
+        if (parts.size() != 3)
+            goto error;
+        mVars[parts[2]] = (*mGetPath)(parts[1]);
+        ++nextLine;
+        return;
+    }
+
+    if (parts[0] == "SETVAR")
+    {
+        if (parts.size() < 3)
+            goto error;
+        CString temp = "";
+        for (unsigned i=2; i<parts.size(); ++i)
+            temp += parts[i];
+        mVars[parts[1]] = temp;
+        ++nextLine;
+        return;
+    }
+
+    if (parts[0] == "MKDIR")
+    {
+        if (parts.size() != 2)
+            goto error;
+        CString path = mCWD + ResolveVar(parts[1]);
+        if (mkdir(path, 777))
+            (*mError)("%s\n", strerror(errno));
+        ++nextLine;
+        return;
+    }
+
+    if (parts[0] == "CD")
+    {
+        if (parts.size() != 2)
+            goto error;
+        CString path = ResolveVar(parts[1]);
+        if (path[0] == '/')
+            mCWD = path;
+        else
+            mCWD += "/" + path;
+        struct stat st;
+        if (stat(mCWD, &st))
+            (*mError)("%s\n", strerror(errno));
+        if (!(st.st_mode & S_IFDIR))
+            (*mError)("%s is not a directory.\n", mCWD.c_str());
+        ++nextLine;
+        return;
+    }
+
+    if (parts[0] == "RM")
+    {
+        if (parts.size() != 2)
+            goto error;
+        CString path = ResolveVar(parts[1]);
+        if (path[0] != '/')
+            path = mCWD + "/" + path;
+        CString command = "rm -rf '" + path + "'";
+        system(command); // lazy
+        ++nextLine;
+        return;
+    }
+
+error:
+    (*mError)("%s is an invalid command", line.c_str());
+    ++nextLine;
+}
+
+const CString& Processor::ResolveVar(const CString& var)
+{
+    if (!IsAVar(var))
+        return var;
+    return mVars[StripVar(var)];
+}
+
+bool Processor::ResolveConditional(const CString& cond)
+{
+    if (!IsAVar(cond))
+        return cond != "";
+    return mConditionals[StripVar(cond)];
+}
+
+void Processor::DefaultError(const char *fmt, ...)
+{
+    va_list ap;
+    va_start(ap, fmt);
+    vfprintf(stderr, fmt, ap);
+    va_end(ap);
+    exit(-1);
+}