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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 SK_BUILD_FOR_UNIX
#include <unistd.h>
#endif
#ifdef _WIN32
#include <direct.h>
#include <io.h>
#include <vector>
#include "SkUtils.h"
#endif
#ifdef SK_BUILD_FOR_IOS
#include "SkOSFile_ios.h"
#endif
#ifdef _WIN32
static bool is_ascii(const char* s) {
while (char v = *s++) {
if ((v & 0x80) != 0) {
return false;
}
}
return true;
}
static FILE* fopen_win(const char* utf8path, const char* perm) {
if (is_ascii(utf8path)) {
return fopen(utf8path, perm);
}
const char* ptr = utf8path;
const char* end = utf8path + strlen(utf8path);
size_t n = 0;
while (ptr < end) {
SkUnichar u = SkUTF8_NextUnicharWithError(&ptr, end);
if (u < 0) {
return nullptr; // malformed UTF-8
}
n += SkUTF16_FromUnichar(u);
}
std::vector<uint16_t> wchars(n + 1);
uint16_t* out = wchars.data();
for (const char* ptr = utf8path; ptr < end;) {
out += SkUTF16_FromUnichar(SkUTF8_NextUnicharWithError(&ptr, end), out);
}
SkASSERT(out == &wchars[n]);
*out = 0; // final null
wchar_t wperms[4] = {(wchar_t)perm[0], (wchar_t)perm[1], (wchar_t)perm[2], (wchar_t)perm[3]};
return _wfopen((wchar_t*)wchars.data(), wperms);
}
#endif
FILE* sk_fopen(const char path[], SkFILE_Flags flags) {
char perm[4] = {0, 0, 0, 0};
char* p = perm;
if (flags & kRead_SkFILE_Flag) {
*p++ = 'r';
}
if (flags & kWrite_SkFILE_Flag) {
*p++ = 'w';
}
*p = 'b';
FILE* file = nullptr;
#ifdef _WIN32
file = fopen_win(path, perm);
#else
file = fopen(path, perm);
#endif
#ifdef SK_BUILD_FOR_IOS
// if not found in default path and read-only, try to open from bundle
if (!file && kRead_SkFILE_Flag == flags) {
SkString bundlePath;
if (ios_get_path_in_bundle(path, &bundlePath)) {
file = fopen(bundlePath.c_str(), perm);
}
}
#endif
if (nullptr == file && (flags & kWrite_SkFILE_Flag)) {
SkDEBUGF(("sk_fopen: fopen(\"%s\", \"%s\") returned nullptr (errno:%d): %s\n",
path, perm, errno, strerror(errno)));
}
return file;
}
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;
}
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
}
size_t sk_ftell(FILE* f) {
long curr = ftell(f);
if (curr < 0) {
return 0;
}
return curr;
}
void sk_fclose(FILE* f) {
if (f) {
fclose(f);
}
}
bool sk_isdir(const char *path) {
struct stat status;
if (0 != stat(path, &status)) {
#ifdef SK_BUILD_FOR_IOS
// check the bundle directory if not in default path
SkString bundlePath;
if (ios_get_path_in_bundle(path, &bundlePath)) {
if (0 != stat(bundlePath.c_str(), &status)) {
return false;
}
}
#else
return false;
#endif
}
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
return 0 == retval;
}
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