From 6aa451bd716686765ca9bec8b1713d92cc9f4681 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Luis=20Pe=C3=B1aranda?= <luisp@impa.br>
Date: Wed, 6 Mar 2013 17:35:29 -0300
Subject: [PATCH] more windows compatibility

---
 openglcanvas.cpp     | 55 +++++++++++++++++++++++++++-----------------
 pano_interface_1.pro |  8 +++++--
 2 files changed, 40 insertions(+), 23 deletions(-)

diff --git a/openglcanvas.cpp b/openglcanvas.cpp
index 7dceb9f..9f66797 100644
--- a/openglcanvas.cpp
+++ b/openglcanvas.cpp
@@ -6,21 +6,34 @@
 #include <cmath>
 #include <sys/types.h>  // for fstat, getpwuid, getuid
 #include <sys/stat.h>   // for fstat
-#ifndef _WIN32
-#  include <pwd.h>        // for getpwuid (TODO: windows?)
+#ifdef _WIN32
+  #include <stdlib.h>   // for getenv (TODO: use getenv_s)
+#else
+  #include <pwd.h>      // for getpwuid
 #endif
 #include <cstdio>       // for fopen, fclose, getc
 #include <cstring>
-#ifdef _WIN32
+#ifdef _MSC_VER
   #include <direct.h>
   #define GET_WORKDIR _getcwd
   #define OPEN_FILE _open
   #define LSEEK_FD _lseek
+  #define FOPEN_RO(_descriptor,_filename) \
+    if(fopen_s(&(_descriptor),_filename,"r")){ \
+        fprintf(stderr,"unable to open file '%s'\n",_filename); \
+        exit(-1); \
+    }
 #else
   // unistd was included above
   #define GET_WORKDIR getcwd
   #define OPEN_FILE open
   #define LSEEK_FD lseek
+  #define FOPEN_RO(_descriptor,_filename) \
+    (_descriptor=fopen(_filename,"r")); \
+    if((_descriptor)==NULL) \
+        fprintf(stderr,"unable to open file '%s'\n",_filename); \
+        exit(-1); \
+    }
 #endif
 
 #define PROGNAME "pano_interface"
@@ -195,22 +208,19 @@ void OpenGLCanvas::change_visualization(QString name){
 
 // This function reads the contents of the ~/.panorc file and stores the
 // options in private variables.
-// TODO: windows
 void OpenGLCanvas::read_config_file(){
 #ifdef _WIN32
+    char* envvar=(char*)malloc(12*sizeof(char));
+    strcpy(envvar,"USERPROFILE\0");
     char *filepath=(char*)malloc(512*sizeof(char));
-    if(!GET_WORKDIR(filepath,512)){
-        fprintf(stderr,"error reading config file\n");
-        exit(-1);
-    }
-    strcat(filepath,"/panorc");
-    // TODO
+    strcpy(filepath,getenv(envvar));
+    free(envvar);
+    strcat(filepath,"\\.panorc");
 #else
     struct passwd *pw=getpwuid(getuid());
     char *filepath=pw->pw_dir;
     strcat(filepath,"/.panorc");
 #endif
-    fprintf(stderr,"the user config file is %s\n",filepath);
     shader_dir=(char*)malloc(512*sizeof(char));
     shader_dir[0]='\0';
     input_image_file=(char*)malloc(512*sizeof(char));
@@ -218,9 +228,10 @@ void OpenGLCanvas::read_config_file(){
     char *read_line=(char*)malloc(64*sizeof(char));
     struct stat testbuf;
     if(stat(filepath,&testbuf)){
-        fprintf(stderr,"~/.panorc does not exist\n");
+        fprintf(stderr,"%s does not exist\n",filepath);
     }else{
-        FILE *rcfile=fopen(filepath,"r");
+        FILE *rcfile;
+        FOPEN_RO(rcfile,filepath);
         char c;
         char *line=(char*)malloc(512*sizeof(char));
         while((c=getc(rcfile))!=EOF){
@@ -262,6 +273,9 @@ void OpenGLCanvas::read_config_file(){
         }
         fclose(rcfile);
     }
+#ifdef _WIN32
+    free(filepath);
+#endif
     emit fov_changed((int)fov);
     emit max_fov_changed((int)fov_max);
 }
@@ -545,11 +559,8 @@ int OpenGLCanvas::getTextureSize(const char * const progname, const char * textu
 {
     struct pam inpam;
     pm_init(progname, 0);
-    FILE * in_file = fopen(texturePath,"r");
-    if (in_file==NULL){
-        fprintf(stderr,"ERROR in getTextureSize: unable to open specified file\n");
-        return -1;
-    }
+    FILE *in_file;
+    FOPEN_RO(in_file,texturePath)
 
 #ifdef PAM_STRUCT_SIZE
     pnm_readpaminit(in_file,&inpam,PAM_STRUCT_SIZE(tuple_type));
@@ -577,7 +588,8 @@ void OpenGLCanvas::readTextureBytes(const char * const progname,
         int row;
 
         pm_init(progname, 0);
-        FILE * in_file = fopen(texturePath, "r");
+        FILE *in_file;
+        FOPEN_RO(in_file,texturePath);
 
 #ifdef PAM_STRUCT_SIZE
         pnm_readpaminit(in_file,&inpam,PAM_STRUCT_SIZE(tuple_type));
@@ -622,14 +634,15 @@ char * OpenGLCanvas::textFileRead(char *fn) {
     count = LSEEK_FD(f, 0, SEEK_END);
 //    close(f);
     if (fn != NULL) {
-        fp = fopen(fn,"rt");
+        //fp = fopen(fn,"rt");
+        FOPEN_RO(fp,fn);
         if (fp != NULL) {
             if (count > 0) {
                 content = (char *)malloc(sizeof(char) * (count+1));
                 count = fread(content,sizeof(char),count,fp);
                 content[count] = '\0';
             }
-            fclose(fp);
+            fclose(fp); // maybe this line must be outside the {}
         }
     }
     return content;
diff --git a/pano_interface_1.pro b/pano_interface_1.pro
index 3d7ff66..505b009 100644
--- a/pano_interface_1.pro
+++ b/pano_interface_1.pro
@@ -26,12 +26,16 @@ DEFINES += GLEW_STATIC
 DEFINES += _CRT_SECURE_NO_WARNINGS
 INCLUDEPATH += "C:/Program Files (x86)/glew-1.5.2/include"
 DEPENDPATH += "C:/Program Files (x86)/glew-1.5.2/include"
+INCLUDEPATH += "C:/Program Files (x86)/freeglut/include"
+DEPENDPATH += "C:/Program Files (x86)/freeglut/include"
 INCLUDEPATH += "C:/Program Files (x86)/GnuWin32/include"
 DEPENDPATH += "C:/Program Files (x86)/GnuWin32/include"
+LIBS += "/nodefaultlib:LIBCMT"
+LIBS += -L"C:/Program Files (x86)/freeglut/lib"
 LIBS += -L"C:/Program Files (x86)/GnuWin32/lib"
-LIBS += -lglu32 -lopengl32 -lfreeglut -llibnetpbm10
+LIBS += -L"C:/Program Files (x86)/GnuWin32/bin"
 LIBS += -L"C:/Program Files (x86)/glew-1.5.2/lib"
-LIBS += -lglew32s
+LIBS += -lfreeglut -lglu32 -lopengl32 -llibnetpbm10 -lglew32s
 }
 
 TARGET = pano_interface_1
-- 
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