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/*
* Copyright (c) Schrodinger, LLC.
*
* Basic file IO.
*/
#ifdef _WIN32
#include <vector>
#include <Windows.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include "File.h"
#include "MemoryDebug.h"
/*
* Get the size from the current file pointer to the end of the file
*/
static long fgetsize(FILE *fp) {
long filesize, current = ftell(fp);
fseek(fp, 0, SEEK_END);
filesize = ftell(fp);
fseek(fp, current, SEEK_SET);
return filesize;
}
/*
* Allocate memory and read the entire file from the given file pointer.
* The file size is stored into the size pointer if not NULL.
*/
static char * fgetcontents(FILE *fp, long *size) {
long filesize = fgetsize(fp);
char *contents = (char*) mmalloc(filesize + 255);
if (!contents)
return NULL;
if (1 != fread(contents, filesize, 1, fp)) {
mfree(contents);
return NULL;
}
if (size)
*size = filesize;
contents[filesize] = '\0';
return contents;
}
#ifdef _WIN32
FILE * pymol_fopen(const char * filename, const char * mode) {
FILE *fp = fopen(filename, mode);
if (!fp) {
size_t len_filename = strlen(filename);
std::vector<wchar_t> wfilename(len_filename + 1);
std::vector<wchar_t> wmode(mode, mode + strlen(mode) + 1);
if (!MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS,
filename, len_filename, wfilename.data(), wfilename.size()))
return NULL;
fp = _wfopen(wfilename.data(), wmode.data());
}
return fp;
}
#endif
/*
* Allocate memory and read the entire file for the given filename.
* The file size is stored into the size pointer if not NULL.
*/
char * FileGetContents(const char *filename, long *size) {
char *contents;
FILE *fp = pymol_fopen(filename, "rb");
if (!fp)
return NULL;
contents = fgetcontents(fp, size);
fclose(fp);
return contents;
}
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