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/**
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0.
*/
#include <aws/io/file_utils.h>
#include <aws/common/environment.h>
#include <aws/common/string.h>
#include <errno.h>
#include <sys/stat.h>
#include <unistd.h>
char aws_get_platform_directory_separator(void) {
return '/';
}
AWS_STATIC_STRING_FROM_LITERAL(s_home_env_var, "HOME");
struct aws_string *aws_get_home_directory(struct aws_allocator *allocator) {
/* ToDo: check getpwuid_r if environment check fails */
struct aws_string *home_env_var_value = NULL;
if (aws_get_environment_value(allocator, s_home_env_var, &home_env_var_value) == 0 && home_env_var_value != NULL) {
return home_env_var_value;
}
return NULL;
}
bool aws_path_exists(const char *path) {
struct stat buffer;
return stat(path, &buffer) == 0;
}
int aws_fseek(FILE *file, aws_off_t offset, int whence) {
int result =
#if _FILE_OFFSET_BITS == 64 || _POSIX_C_SOURCE >= 200112L
fseeko(file, offset, whence);
#else
fseek(file, offset, whence);
#endif
if (result != 0) {
return aws_translate_and_raise_io_error(errno);
}
return AWS_OP_SUCCESS;
}
int aws_file_get_length(FILE *file, int64_t *length) {
struct stat file_stats;
int fd = fileno(file);
if (fd == -1) {
return aws_raise_error(AWS_IO_INVALID_FILE_HANDLE);
}
if (fstat(fd, &file_stats)) {
return aws_translate_and_raise_io_error(errno);
}
*length = file_stats.st_size;
return AWS_OP_SUCCESS;
}
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