static void create_directory(const path &p) {
if(!CreateDirectory(p.directory_str().c_str(), NULL))
{
TCHAR chBuf[2048];
swprintf_s(chBuf, _countof(chBuf), L"Can't create directory:[%s]!!", p.buf);
TRACEERR("[path] [create_directory]", chBuf, GetLastError());
throw path_error("CreateDirectory");
}
}
static void move(const path &from, const path &to, bool replace=false) {
if(!MoveFileEx(from.buf, to.buf, replace?MOVEFILE_REPLACE_EXISTING:0))
{
TCHAR chBuf[1024];
swprintf_s(chBuf, _countof(chBuf), L"Can't move file from:[%s] to:[%s]!!", from.buf, to.buf);
TRACEERR("[path] [move]", chBuf, GetLastError());
throw path_error("MoveFileEx");
}
}
static void remove(const path &p) {
if(exists(p) && !DeleteFile(p.buf))
{
TCHAR chBuf[1024];
swprintf_s(chBuf, _countof(chBuf), L"Can't delete file [%s]!!", p.buf);
TRACEERR("[path] [remove]", chBuf, GetLastError());
throw path_error("DeleteFile");
}
}
static void copy(const path &from, const path &to, bool replace=false)
{
if(replace && exists(to)) remove(to);
if(!CopyFile(from.buf, to.buf, true))
{
TCHAR chBuf[2048];
swprintf_s(chBuf, _countof(chBuf), L"Can't copy file from:[%s] to:[%s]!!", from.buf, to.buf);
TRACEERR("[path] [copy]", chBuf, GetLastError());
throw path_error("CopyFile");
}
}
static path relative_to(const path &from, const path &to, bool fromdir=true) {
if(PathIsSameRoot(from.buf, to.buf)) {
path p;
if(!PathRelativePathTo(p.buf, from.buf, fromdir?FILE_ATTRIBUTE_DIRECTORY:0, to.buf, 0))
{
TCHAR chBuf[1024];
swprintf_s(chBuf, _countof(chBuf), L"PathRelativePathTo() from:[%s] to:[%s] failed!!", from.buf, to.buf);
TRACEERR("[path] [relative_to]", chBuf, GetLastError());
throw path_error("PathRelativePathTo");
}
return p;
}
else if(to.has_root()) return to;
else
{
TRACEE("[path] [relative_to] * ERROR: unable to create relative path: paths have different roots!!");
throw std::runtime_error("unable to create relative path: paths have different roots");
}
}
pnm_img *pnm_read(const char file_name[]){
FILE* fp;
int status;
int p;
char buffer[MAX_LINE_SIZE];
// open file
fp = fopen(file_name,"r");
if(fp == NULL) {
path_error(file_name);
return NULL;
}
// get PPM type
read_line(buffer,MAX_LINE_SIZE,fp);
if(buffer[0] != 'P') {
printf("Bad header format\n");
return NULL;
}
p = atoi(buffer+1);
// read past any comments
do {
read_line(buffer,MAX_LINE_SIZE,fp);
} while(buffer[0] == '#');
// get dimensions
char* current_position;
int width = strtol(buffer,¤t_position,10);
if (*current_position == '\n'){
read_line(buffer,MAX_LINE_SIZE,fp);
current_position = buffer;
}
int height = strtol(current_position,¤t_position,10);
pnm_img* img = pnm_create(width, height, p);
if (*current_position == '\n'){
read_line(buffer,MAX_LINE_SIZE,fp);
current_position = buffer;
}
img->max_color = strtol(current_position,¤t_position,10);
// extract pixel data
if(p == 5 || p == 6){
fread(img->pixels, sizeof(char),height*width*num_channels(p),fp);
}
else{
int R, G, B;
if (num_channels(p) == 3){
pnm_pixmap* pm = (pnm_pixmap*)img->pixels;
for(int i = 0; i< height*width; i++){
status = fscanf(fp," %i %i %i", &R, &G, &B);
if(status == EOF) {
printf("Bad file format\n");
return NULL;
}
pm[i].R = (unsigned char)R;
pm[i].G = (unsigned char)G;
pm[i].B = (unsigned char)B;
}
}
else{
int grey;
for(int i = 0; i< height*width; i++){
status = fscanf(fp," %i", &grey);
if(status == EOF) {
printf("Bad file format\n");
return NULL;
}
*((unsigned char*)img->pixels+i) = (unsigned char)grey;
}
}
}
fclose(fp);
return img;
}
