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/*
* Copyright 2006 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkOSFile.h"
#include "SkTypes.h"
#include <errno.h>
#include <stdio.h>
#include <sys/stat.h>
#ifdef _WIN32
#include <direct.h>
#include <io.h>
#endif
#ifdef SK_BUILD_FOR_IOS
#import <CoreFoundation/CoreFoundation.h>
static FILE* ios_open_from_bundle(const char path[], const char* perm) {
// Get a reference to the main bundle
CFBundleRef mainBundle = CFBundleGetMainBundle();
// Get a reference to the file's URL
CFStringRef pathRef = CFStringCreateWithCString(NULL, path, kCFStringEncodingUTF8);
CFURLRef imageURL = CFBundleCopyResourceURL(mainBundle, pathRef, NULL, NULL);
if (!imageURL) {
return nullptr;
}
// Convert the URL reference into a string reference
CFStringRef imagePath = CFURLCopyFileSystemPath(imageURL, kCFURLPOSIXPathStyle);
// Get the system encoding method
CFStringEncoding encodingMethod = CFStringGetSystemEncoding();
// Convert the string reference into a C string
const char *finalPath = CFStringGetCStringPtr(imagePath, encodingMethod);
return fopen(finalPath, perm);
}
#endif
FILE* sk_fopen(const char path[], SkFILE_Flags flags) {
char perm[4];
char* p = perm;
if (flags & kRead_SkFILE_Flag) {
*p++ = 'r';
}
if (flags & kWrite_SkFILE_Flag) {
*p++ = 'w';
}
*p++ = 'b';
*p = 0;
//TODO: on Windows fopen is just ASCII or the current code page,
//convert to utf16 and use _wfopen
FILE* file = nullptr;
#ifdef SK_BUILD_FOR_IOS
// if read-only, try to open from bundle first
if (kRead_SkFILE_Flag == flags) {
file = ios_open_from_bundle(path, perm);
}
// otherwise just read from the Documents directory (default)
if (!file) {
#endif
file = ::fopen(path, perm);
#ifdef SK_BUILD_FOR_IOS
}
#endif
if (nullptr == file && (flags & kWrite_SkFILE_Flag)) {
SkDEBUGF(("sk_fopen: fopen(\"%s\", \"%s\") returned NULL (errno:%d): %s\n",
path, perm, errno, strerror(errno)));
}
return file;
}
char* sk_fgets(char* str, int size, FILE* f) {
return ::fgets(str, size, (FILE *)f);
}
int sk_feof(FILE *f) {
// no :: namespace qualifier because it breaks android
return feof((FILE *)f);
}
size_t sk_fgetsize(FILE* f) {
SkASSERT(f);
long curr = ::ftell(f); // remember where we are
if (curr < 0) {
return 0;
}
::fseek(f, 0, SEEK_END); // go to the end
long size = ::ftell(f); // record the size
if (size < 0) {
size = 0;
}
::fseek(f, curr, SEEK_SET); // go back to our prev location
return size;
}
bool sk_frewind(FILE* f) {
SkASSERT(f);
::rewind(f);
return true;
}
size_t sk_fread(void* buffer, size_t byteCount, FILE* f) {
SkASSERT(f);
if (buffer == nullptr) {
size_t curr = ::ftell(f);
if ((long)curr == -1) {
SkDEBUGF(("sk_fread: ftell(%p) returned -1 feof:%d ferror:%d\n", f, feof(f), ferror(f)));
return 0;
}
int err = ::fseek(f, (long)byteCount, SEEK_CUR);
if (err != 0) {
SkDEBUGF(("sk_fread: fseek(%d) tell:%d failed with feof:%d ferror:%d returned:%d\n",
byteCount, curr, feof(f), ferror(f), err));
return 0;
}
return byteCount;
}
else
return ::fread(buffer, 1, byteCount, f);
}
size_t sk_fwrite(const void* buffer, size_t byteCount, FILE* f) {
SkASSERT(f);
return ::fwrite(buffer, 1, byteCount, f);
}
void sk_fflush(FILE* f) {
SkASSERT(f);
::fflush(f);
}
void sk_fsync(FILE* f) {
#if !defined(_WIN32) && !defined(SK_BUILD_FOR_ANDROID) && !defined(__UCLIBC__) \
&& !defined(_NEWLIB_VERSION)
int fd = ::fileno(f);
::fsync(fd);
#endif
}
bool sk_fseek(FILE* f, size_t byteCount) {
int err = ::fseek(f, (long)byteCount, SEEK_SET);
return err == 0;
}
bool sk_fmove(FILE* f, long byteCount) {
int err = ::fseek(f, byteCount, SEEK_CUR);
return err == 0;
}
size_t sk_ftell(FILE* f) {
long curr = ::ftell(f);
if (curr < 0) {
return 0;
}
return curr;
}
void sk_fclose(FILE* f) {
SkASSERT(f);
::fclose(f);
}
bool sk_isdir(const char *path) {
struct stat status;
if (0 != stat(path, &status)) {
return false;
}
return SkToBool(status.st_mode & S_IFDIR);
}
bool sk_mkdir(const char* path) {
if (sk_isdir(path)) {
return true;
}
if (sk_exists(path)) {
fprintf(stderr,
"sk_mkdir: path '%s' already exists but is not a directory\n",
path);
return false;
}
int retval;
#ifdef _WIN32
retval = _mkdir(path);
#else
retval = mkdir(path, 0777);
#endif
if (0 == retval) {
return true;
} else {
fprintf(stderr, "sk_mkdir: error %d creating dir '%s'\n", errno, path);
return false;
}
}
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