add gcc-wrapper

Change-Id: I961bd23d1ec382d247a489cda42194ce9f4fe1da
Reviewed-on: https://gerrit.libreoffice.org/2715
Reviewed-by: Fridrich Strba <fridrich@documentfoundation.org>
Tested-by: Fridrich Strba <fridrich@documentfoundation.org>

4 files changed, 242 insertions, 0 deletions

diff --git a/solenv/gcc-wrappers/g++.cxx b/solenv/gcc-wrappers/g++.cxx
new file mode 100755
index 000000000000..d2ee3d555e0a
--- /dev/null
+++ b/solenv/gcc-wrappers/g++.cxx
@@ -0,0 +1,25 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+* This file is part of the LibreOffice project.
+*
+* This Source Code Form is subject to the terms of the Mozilla Public
+* License, v. 2.0. If a copy of the MPL was not distributed with this
+* file, You can obtain one at http://mozilla.org/MPL/2.0/.
+*/
+
+#include "wrapper.hxx"
+
+int main(int argc, char *argv[]) {
+    vector<string> rawargs(argv + 1, argv + argc);
+
+    string command=getexe("REAL_CXX");
+
+    string args=processccargs(rawargs);
+
+    setupccenv();
+
+    return startprocess(command,args);
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/solenv/gcc-wrappers/gcc.cxx b/solenv/gcc-wrappers/gcc.cxx
new file mode 100755
index 000000000000..b8983cf6e5e6
--- /dev/null
+++ b/solenv/gcc-wrappers/gcc.cxx
@@ -0,0 +1,25 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+* This file is part of the LibreOffice project.
+*
+* This Source Code Form is subject to the terms of the Mozilla Public
+* License, v. 2.0. If a copy of the MPL was not distributed with this
+* file, You can obtain one at http://mozilla.org/MPL/2.0/.
+*/
+
+#include "wrapper.hxx"
+
+int main(int argc, char *argv[]) {
+    vector<string> rawargs(argv + 1, argv + argc);
+
+    string command=getexe("REAL_CC");
+
+    string args=processccargs(rawargs);
+
+    setupccenv();
+
+    return startprocess(command,args);
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/solenv/gcc-wrappers/wrapper.cxx b/solenv/gcc-wrappers/wrapper.cxx
new file mode 100644
index 000000000000..4976305c4d3d
--- /dev/null
+++ b/solenv/gcc-wrappers/wrapper.cxx
@@ -0,0 +1,168 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+* This file is part of the LibreOffice project.
+*
+* This Source Code Form is subject to the terms of the Mozilla Public
+* License, v. 2.0. If a copy of the MPL was not distributed with this
+* file, You can obtain one at http://mozilla.org/MPL/2.0/.
+*/
+
+#include "wrapper.hxx"
+
+#include <windows.h>
+
+#define BUFLEN 2048
+
+string getexe(string exename) {
+    char* cmdbuf;
+    size_t cmdlen;
+    _dupenv_s(&cmdbuf,&cmdlen,exename.c_str());
+    if(!cmdbuf) {
+        cout << "Error " << exename << " not defined. Did you forget to source the enviroment?" << endl;
+        exit(1);
+    }
+    string command(cmdbuf);
+    free(cmdbuf);
+    return command;
+}
+
+void setupccenv() {
+    // Set-up library path
+    string libpath="LIB=";
+    char* libbuf;
+    size_t liblen;
+    _dupenv_s(&libbuf,&liblen,"ILIB");
+    libpath.append(libbuf);
+    free(libbuf);
+    if(_putenv(libpath.c_str())<0) {
+        cerr << "Error: could not export LIB" << endl;
+        exit(1);
+    }
+
+    // Set-up include path
+    string includepath="INCLUDE=.;";
+    char* incbuf;
+    size_t inclen;
+    _dupenv_s(&incbuf,&inclen,"SOLARINC");
+    string inctmp(incbuf);
+    free(incbuf);
+
+    // 3 = strlen(" -I")
+    for(size_t pos=0; pos != string::npos;) {
+        size_t endpos=inctmp.find(" -I",pos+3);
+        size_t len=endpos-pos-3;
+        if(endpos==string::npos)
+            includepath.append(inctmp,pos+3,endpos);
+        else if(len>0) {
+            includepath.append(inctmp,pos+3,len);
+            includepath.append(";");
+        }
+        pos=inctmp.find(" -I",pos+len);
+    }
+    if(_putenv(includepath.c_str())<0) {
+        cerr << "Error: could not export INCLUDE" << endl;
+        exit(1);
+    }
+}
+
+string processccargs(vector<string> rawargs) {
+    // suppress the msvc banner
+    string args=" -nologo";
+    // TODO: should these options be enabled globally?
+    args.append(" -EHsc");
+    args.append(" -MD");
+
+    for(vector<string>::iterator i = rawargs.begin(); i != rawargs.end(); ++i) {
+        args.append(" ");
+        if(*i == "-o") {
+            // TODO: handle more than just exe output
+            args.append("-Fe");
+            ++i;
+            args.append(*i);
+        }
+        else if(*i == "-g")
+            args.append("-Zi");
+        else if(!(*i).compare(0,2,"-D")) {
+            // need to re-escape strings for preprocessor
+            for(size_t pos=(*i).find("\"",0); pos!=string::npos; pos=(*i).find("\"",pos)) {
+                (*i).replace(pos,0,"\\");
+                pos+=2;
+            }
+            args.append(*i);
+        }
+        else
+            args.append(*i);
+    }
+    return args;
+}
+
+int startprocess(string command, string args) {
+    STARTUPINFO si;
+    PROCESS_INFORMATION pi;
+    SECURITY_ATTRIBUTES sa;
+
+    HANDLE childout_read;
+    HANDLE childout_write;
+
+    memset(&sa,0,sizeof(sa));
+    memset(&si,0,sizeof(si));
+    memset(&pi,0,sizeof(pi));
+
+    sa.nLength=sizeof(sa);
+    sa.bInheritHandle=TRUE;
+
+    if(!CreatePipe(&childout_read,&childout_write,&sa,0)) {
+        cerr << "Error: could not create sdtout pipe" << endl;
+        exit(1);
+    }
+
+    si.cb=sizeof(si);
+    si.dwFlags |= STARTF_USESTDHANDLES;
+    si.hStdOutput=childout_write;
+    si.hStdError=childout_write;
+
+    // Commandline may be modified by CreateProcess
+    char* cmdline=_strdup(args.c_str());
+
+    if(!CreateProcess(command.c_str(), // Process Name
+        cmdline, // Command Line
+        NULL, // Process Handle not Inheritable
+        NULL, // Thread Handle not Inheritable
+        TRUE, // Handles are Inherited
+        0, // No creation flags
+        NULL, // Enviroment for process
+        NULL, // Use same starting directory
+        &si, // Startup Info
+        &pi) // Process Information
+        ) {
+            cerr << "Error: could not create process" << endl;
+            exit(1);
+    }
+
+    // if you don't close this the process will hang
+    CloseHandle(childout_write);
+
+    // Get Process output
+    char buffer[BUFLEN];
+    DWORD readlen, writelen, ret;
+    HANDLE stdout_handle=GetStdHandle(STD_OUTPUT_HANDLE);
+    while(true) {
+        int success=ReadFile(childout_read,buffer,BUFLEN,&readlen,NULL);
+        // check if the child process has exited
+        if(GetLastError()==ERROR_BROKEN_PIPE)
+            break;
+        if(!success) {
+            cerr << "Error: could not read from subprocess stdout" << endl;
+            exit(1);
+        }
+        if(readlen!=0) {
+                WriteFile(stdout_handle,buffer,readlen,&writelen,NULL);
+        }
+    }
+    GetExitCodeProcess(pi.hProcess, &ret);
+    CloseHandle(pi.hThread);
+    CloseHandle(pi.hProcess);
+    return int(ret);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/solenv/gcc-wrappers/wrapper.hxx b/solenv/gcc-wrappers/wrapper.hxx
new file mode 100755
index 000000000000..985074196c75
--- /dev/null
+++ b/solenv/gcc-wrappers/wrapper.hxx
@@ -0,0 +1,24 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+* This file is part of the LibreOffice project.
+*
+* This Source Code Form is subject to the terms of the Mozilla Public
+* License, v. 2.0. If a copy of the MPL was not distributed with this
+* file, You can obtain one at http://mozilla.org/MPL/2.0/.
+*/
+
+#include <string>
+#include <iostream>
+#include <vector>
+
+using namespace std;
+
+string getexe(string exename);
+
+void setupccenv();
+
+string processccargs(vector<string> rawargs);
+
+int startprocess(string command, string args);
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */