platform/util.h

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#pragma once
 
#include <stddef.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdio.h>
 
// Define ssize_t for all platforms
#ifdef _WIN32
#include <BaseTsd.h>
typedef SSIZE_T ssize_t;
#else
#include <sys/types.h> // For ssize_t on POSIX systems
#endif
 
/* ============================================================================
 * String Operations
 * ============================================================================
 */
 
int platform_snprintf(char *str, size_t size, const char *format, ...);
 
int platform_vsnprintf(char *str, size_t size, const char *format, va_list ap);
 
char *platform_strdup(const char *s);
 
char *platform_strndup(const char *s, size_t n);
 
int platform_strcasecmp(const char *s1, const char *s2);
 
int platform_strncasecmp(const char *s1, const char *s2, size_t n);
 
char *platform_strtok_r(char *str, const char *delim, char **saveptr);
 
size_t platform_strlcpy(char *dst, const char *src, size_t size);
 
size_t platform_strlcat(char *dst, const char *src, size_t size);
 
int platform_strncpy(char *dst, size_t dst_size, const char *src, size_t count);
 
/* ============================================================================
 * Memory Operations
 * ============================================================================
 */
 
void *platform_aligned_alloc(size_t alignment, size_t size);
 
void platform_aligned_free(void *ptr);
 
void platform_memory_barrier(void);
 
/* ============================================================================
 * Error Handling
 * ============================================================================
 */
 
const char *platform_strerror(int errnum);
 
int platform_get_last_error(void);
 
void platform_set_last_error(int error);
 
/* ============================================================================
 * File Operations
 * ============================================================================
 */
 
int platform_open(const char *pathname, int flags, ...);
 
FILE *platform_fopen(const char *filename, const char *mode);
 
FILE *platform_fdopen(int fd, const char *mode);
 
ssize_t platform_read(int fd, void *buf, size_t count);
 
ssize_t platform_write(int fd, const void *buf, size_t count);
 
int platform_close(int fd);
 
int platform_unlink(const char *pathname);
 
int platform_chmod(const char *pathname, int mode);
 
/* ============================================================================
 * File Open Flags (Cross-platform)
 * ============================================================================
 */
 
#ifdef _WIN32
#define PLATFORM_O_RDONLY _O_RDONLY
#define PLATFORM_O_WRONLY _O_WRONLY
#define PLATFORM_O_RDWR _O_RDWR
#define PLATFORM_O_CREAT _O_CREAT
#define PLATFORM_O_EXCL _O_EXCL
#define PLATFORM_O_TRUNC _O_TRUNC
#define PLATFORM_O_APPEND _O_APPEND
#define PLATFORM_O_BINARY _O_BINARY
#else
#define PLATFORM_O_RDONLY O_RDONLY
#define PLATFORM_O_WRONLY O_WRONLY
#define PLATFORM_O_RDWR O_RDWR
#define PLATFORM_O_CREAT O_CREAT
#define PLATFORM_O_EXCL O_EXCL
#define PLATFORM_O_TRUNC O_TRUNC
#define PLATFORM_O_APPEND O_APPEND
#define PLATFORM_O_BINARY 0 // Not needed on POSIX
#endif