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#include "../include/FileUtil.hpp"
#include "../include/env.hpp"
#include <cstdio>
#if OS_FAMILY == OS_FAMILY_POSIX
#include <unistd.h>
#include <sys/types.h>
#include <pwd.h>
#include <fcntl.h>
#endif
using namespace std;
namespace sibs
{
FileType getFileType(const char *path)
{
tinydir_file file;
if(tinydir_file_open(&file, path) == 0)
{
return file.is_dir ? FileType::DIRECTORY : FileType::REGULAR;
}
else
{
return FileType::FILE_NOT_FOUND;
}
}
// TODO: Handle failure (directory doesn't exist, no permission etc)
void walkDir(const char *directory, FileWalkCallbackFunc callbackFunc)
{
tinydir_dir dir;
tinydir_open(&dir, directory);
while (dir.has_next)
{
tinydir_file file;
tinydir_readfile(&dir, &file);
if(_tinydir_strcmp(file.name, ".") != 0 && _tinydir_strcmp(file.name, "..") != 0)
callbackFunc(&file);
tinydir_next(&dir);
}
tinydir_close(&dir);
}
// TODO: Handle failure (directory doesn't exist, no permission etc)
void walkDirFiles(const char *directory, FileWalkCallbackFunc callbackFunc)
{
tinydir_dir dir;
tinydir_open(&dir, directory);
while (dir.has_next)
{
tinydir_file file;
tinydir_readfile(&dir, &file);
if(file.is_reg)
callbackFunc(&file);
tinydir_next(&dir);
}
tinydir_close(&dir);
}
// TODO: Handle failure (directory doesn't exist, no permission etc)
void walkDirFilesRecursive(const char *directory, FileWalkCallbackFunc callbackFunc)
{
tinydir_dir dir;
tinydir_open(&dir, directory);
while (dir.has_next)
{
tinydir_file file;
tinydir_readfile(&dir, &file);
if(file.is_reg)
callbackFunc(&file);
else if(_tinydir_strcmp(file.name, ".") != 0 && _tinydir_strcmp(file.name, "..") != 0)
walkDirFilesRecursive(file.path, callbackFunc);
tinydir_next(&dir);
}
tinydir_close(&dir);
}
Result<StringView> getFileContent(const char *filepath)
{
FILE *file = fopen(filepath, "rb");
if(!file)
{
int error = errno;
string errMsg = "Failed to open file: ";
errMsg += filepath;
errMsg += "; reason: ";
errMsg += strerror(error);
return Result<StringView>::Err(errMsg);
}
fseek(file, 0, SEEK_END);
size_t fileSize = ftell(file);
fseek(file, 0, SEEK_SET);
// TODO: Change this to string so it can be deallocated and use std::move to prevent copies
char *result = (char*)malloc(fileSize + 1);
if(!result)
{
std::string errMsg = "Failed to load file content from file: ";
errMsg += filepath;
throw std::runtime_error(errMsg);
}
result[fileSize] = '\0';
fread(result, 1, fileSize, file);
fclose(file);
return Result<StringView>::Ok(StringView(result, fileSize));
}
Result<bool> fileOverwrite(const char *filepath, StringView data)
{
FILE *file = fopen(filepath, "wb");
if(!file)
{
int error = errno;
string errMsg = "Failed to overwrite file: ";
errMsg += filepath;
errMsg += "; reason: ";
errMsg += strerror(error);
return Result<bool>::Err(errMsg);
}
setbuf(file, NULL);
fwrite(data.data, 1, data.size, file);
fclose(file);
return Result<bool>::Ok(true);
}
const char* getHomeDir()
{
const char *homeDir = getenv("HOME");
if(!homeDir)
{
passwd *pw = getpwuid(getuid());
homeDir = pw->pw_dir;
}
return homeDir;
}
Result<string> getCwd()
{
string cwd;
cwd.reserve(PATH_MAX);
if(getcwd(&cwd[0], PATH_MAX) != 0)
{
if(cwd.empty()) cwd = ".";
return Result<string>::Ok(cwd);
}
return Result<string>::Err(strerror(errno));
}
#if OS_FAMILY == OS_FAMILY_POSIX
Result<bool> createDirectoryRecursive(const char *path)
{
char pathBuffer[PATH_MAX];
size_t pathLength = strlen(path);
if(pathLength > sizeof(pathBuffer) - 1)
{
string errMsg = "Directory path too long: ";
errMsg += string(path, pathLength);
return Result<bool>::Err(errMsg, ENAMETOOLONG);
}
strcpy(pathBuffer, path);
char *p = pathBuffer;
for(size_t i = 0; i < pathLength; ++i)
{
if(i > 0 && *p == '/')
{
*p = '\0';
if(mkdir(pathBuffer, S_IRWXU) != 0)
{
int error = errno;
if(error != EEXIST)
{
string errMsg = "Failed to create directory: ";
errMsg += pathBuffer;
errMsg += "; reason: ";
errMsg += strerror(error);
return Result<bool>::Err(errMsg, error);
}
}
*p = '/';
}
++p;
}
if(mkdir(pathBuffer, S_IRWXU) != 0)
{
int error = errno;
if(error != EEXIST)
{
string errMsg = "Failed to create directory: ";
errMsg += pathBuffer;
errMsg += "; reason: ";
errMsg += strerror(error);
return Result<bool>::Err(errMsg, error);
}
}
return Result<bool>::Ok(true);
}
Result<string> getRealPath(const char *path)
{
// TODO: Verify NULL can be passed as 'resolved' argument with different compilers and operating systems (clang, freebsd etc)
char *resolved = realpath(path, nullptr);
if(!resolved)
{
int error = errno;
string errMsg = "Failed to get real path for \"";
errMsg += path;
errMsg += "\": ";
errMsg += strerror(error);
return Result<string>::Err(errMsg, error);
}
string result = resolved;
free(resolved);
return Result<string>::Ok(resolved);
}
#else
#error "TODO: Implement createDirectoryRecursive and getRealPath on windows"
#endif
}
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