Add asserts

File.c

@@ -1,8 +1,11 @@
 #include "CgeFile.h"
+#include <assert.h>
 
 int CgeFileError(CgeFile *file) {
     int flags;
 
+    assert(file != NULL);
+
     CgeFileFlags(file, &flags);
     return flags & CGE_FILE_ERROR;
 }
@@ -10,6 +13,8 @@ int CgeFileError(CgeFile *file) {
 int CgeFileEndOfFile(CgeFile *file) {
     int flags;
 
+    assert(file != NULL);
+
     CgeFileFlags(file, &flags);
     return flags & CGE_FILE_EOF;
 }
@@ -18,6 +23,9 @@ int CgeFilePeek(CgeFile *file, void *buffer, size_t size, size_t *actual) {
     int64_t pos;
     size_t n = 0;
 
+    assert(file != NULL);
+    assert(buffer != NULL);
+
     if (CgeFileError(file) || CgeFileEndOfFile(file))
         return 0;
 
@@ -26,6 +34,7 @@ int CgeFilePeek(CgeFile *file, void *buffer, size_t size, size_t *actual) {
         !CgeFileSeek(file, pos, CGE_FILE_SET))
         return 0;
 
-    if (actual) *actual = n;
+    if (actual)
+        *actual = n;
     return 1;
 }

posix/File.c

@@ -8,6 +8,7 @@
 #include <string.h>
 #include <sys/stat.h>
 #include <unistd.h>
+#include <assert.h>
 
 static const int64_t off_t_max =
     (sizeof(off_t) == 8) ? INT64_MAX :
@@ -77,8 +78,7 @@ static int fileOpenFlags(int mode) {
     else
         return -1;
 
-    if (!(mode & CGE_FILE_EXIST))
-    {
+    if (!(mode & CGE_FILE_EXIST)) {
         flags |= O_CREAT;
         if (mode & CGE_FILE_CREATE)
             flags |= O_EXCL;
@@ -97,6 +97,9 @@ static int fileInit(CgeFile *file, const char *path, int mode) {
     static const mode_t openMode = (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);
     int flags;
 
+    assert(file != NULL);
+    assert(path != NULL);
+
     if (!path)
         return CGE_FILE_EINVAL;
 
@@ -116,17 +119,23 @@ CgeFile *CgeFileNew(const char *path, int mode, int *result) {
     CgeFile *file;
     int code = 0;
 
+    assert(path != NULL);
+
     if ((file = malloc(sizeof(*file)))) {
         if ((code = fileInit(file, path, mode))) {
             free(file);
             file = NULL;
         }
     }
-    if (result) *result = code;
+    if (result)
+        *result = code;
     return file;
 }
 
 void CgeFileFree(CgeFile *file) {
+    if (!file)
+        return;
+
     close(file->handle);
     free(file);
 }
@@ -134,6 +143,10 @@ void CgeFileFree(CgeFile *file) {
 int CgeFileRead(CgeFile *file, void *buffer, size_t size, size_t *actual) {
     ssize_t readed;
 
+    assert(file != NULL);
+    assert(file->handle != -1);
+    assert(buffer != NULL);
+
     if (file->flags & CGE_FILE_ERROR)
         return 0;
 
@@ -144,10 +157,13 @@ int CgeFileRead(CgeFile *file, void *buffer, size_t size, size_t *actual) {
     if (readed < 0)
         goto error;
 
-    if (readed > 0) file->flags &= ~CGE_FILE_EOF;
-    else file->flags |= CGE_FILE_EOF;
+    if (readed > 0)
+        file->flags &= ~CGE_FILE_EOF;
+    else
+        file->flags |= CGE_FILE_EOF;
 
-    if (actual) *actual = readed;
+    if (actual)
+        *actual = readed;
     return 1;
 
 error:
@@ -160,6 +176,10 @@ int CgeFileWrite(CgeFile *file, const void *buffer, size_t size,
                  size_t *actual) {
     ssize_t written;
 
+    assert(file != NULL);
+    assert(file->handle != -1);
+    assert(buffer != NULL);
+
     if (file->flags & CGE_FILE_ERROR)
         return 0;
 
@@ -170,7 +190,8 @@ int CgeFileWrite(CgeFile *file, const void *buffer, size_t size,
     if (written < 0)
         goto error;
 
-    if (actual) *actual = written;
+    if (actual)
+        *actual = written;
     return 1;
 
 error:
@@ -180,6 +201,10 @@ error:
 }
 
 int CgeFileTell(CgeFile *file, int64_t *offset) {
+    assert(file != NULL);
+    assert(file->handle != -1);
+    assert(offset != NULL);
+
     if (file->flags & CGE_FILE_ERROR)
         return 0;
 
@@ -195,6 +220,10 @@ error:
 }
 
 int CgeFileSeek(CgeFile *file, int64_t offset, int whence) {
+    assert(file != NULL);
+    assert(file->handle != -1);
+    assert(whence == CGE_FILE_SET || whence == CGE_FILE_CUR || whence == CGE_FILE_END);
+
     if (file->flags & CGE_FILE_ERROR)
         return 0;
 
@@ -216,6 +245,9 @@ error:
 }
 
 int CgeFileFlush(CgeFile *file) {
+    assert(file != NULL);
+    assert(file->handle != -1);
+
     if (fsync(file->handle))
         goto error;
 
@@ -230,6 +262,10 @@ error:
 int CgeFileSize(CgeFile *file, int64_t *size) {
     struct stat sb;
 
+    assert(file != NULL);
+    assert(file->handle != -1);
+    assert(size != NULL);
+
     if (fstat(file->handle, &sb))
         goto error;
 
@@ -243,15 +279,22 @@ error:
 }
 
 int CgeFileFlags(CgeFile *file, int *flags) {
+    assert(file != NULL);
+    assert(flags != NULL);
+
     *flags = file->flags;
     return 1;
 }
 
 int CgeFileClear(CgeFile *file) {
+    assert(file != NULL);
+
     file->flags &= ~CGE_FILE_ERROR;
     return 1;
 }
 
 int CgeFileErrorCode(CgeFile *file) {
+    assert(file != NULL);
+
     return file->lastError;
 }

win32/File.c

@@ -1,5 +1,6 @@
 #include "../CgeFile.h"
 #include <windows.h>
+#include <assert.h>
 
 struct CgeFile {
     HANDLE handle;
@@ -52,6 +53,9 @@ static int errorCodeFromError(void) {
 static int fileInit(CgeFile *file, const char *path, int mode) {
     DWORD access = 0, how = 0;
 
+    assert(file != NULL);
+    assert(path != NULL);
+
     if (!path)
         return CGE_FILE_EINVAL;
 
@@ -96,17 +100,24 @@ CgeFile *CgeFileNew(const char *path, int mode, int *result) {
     CgeFile *file;
     int code = 0;
 
+    assert(path != NULL);
+
     if ((file = malloc(sizeof(*file)))) {
         if ((code = fileInit(file, path, mode))) {
             free(file);
             file = NULL;
         }
     }
-    if (result) *result = code;
+    if (result)
+        *result = code;
+
     return file;
 }
 
 void CgeFileFree(CgeFile *file) {
+    if (!file)
+        return;
+
     CloseHandle(file->handle);
     free(file);
 }
@@ -114,15 +125,22 @@ void CgeFileFree(CgeFile *file) {
 int CgeFileRead(CgeFile *file, void *buffer, size_t size, size_t *actual) {
     DWORD readed;
 
+    assert(file != NULL);
+    assert(file->handle != INVALID_HANDLE_VALUE);
+    assert(buffer != NULL);
+
     if (file->flags & CGE_FILE_ERROR)
         return 0;
 
     if (!ReadFile(file->handle, buffer, (DWORD)size, &readed, NULL))
         goto error;
 
-    if (!readed) file->flags |= CGE_FILE_EOF;
-    else file->flags &= ~CGE_FILE_EOF;
-    if (actual) *actual = readed;
+    if (!readed)
+        file->flags |= CGE_FILE_EOF;
+    else
+        file->flags &= ~CGE_FILE_EOF;
+    if (actual)
+        *actual = readed;
 
     return 1;
 
@@ -137,6 +155,10 @@ int CgeFileWrite(CgeFile *file, const void *buffer, size_t size,
     DWORD written;
     LARGE_INTEGER position;
 
+    assert(file != NULL);
+    assert(file->handle != INVALID_HANDLE_VALUE);
+    assert(buffer != NULL);
+
     if (file->flags & CGE_FILE_ERROR)
         return 0;
 
@@ -149,7 +171,8 @@ int CgeFileWrite(CgeFile *file, const void *buffer, size_t size,
     if (!WriteFile(file->handle, buffer, (DWORD)size, &written, NULL))
         goto error;
 
-    if (actual) *actual = written;
+    if (actual)
+        *actual = written;
 
     return 1;
 
@@ -162,6 +185,10 @@ error:
 int CgeFileTell(CgeFile *file, int64_t *offset) {
     LARGE_INTEGER dummy, position;
 
+    assert(file != NULL);
+    assert(file->handle != INVALID_HANDLE_VALUE);
+    assert(offset != NULL);
+
     if (file->flags & CGE_FILE_ERROR)
         return 0;
 
@@ -181,6 +208,10 @@ error:
 int CgeFileSeek(CgeFile *file, int64_t offset, int whence) {
     LARGE_INTEGER position;
 
+    assert(file != NULL);
+    assert(file->handle != INVALID_HANDLE_VALUE);
+    assert(whence == CGE_FILE_SET || whence == CGE_FILE_CUR || whence == CGE_FILE_END);
+
     if (file->flags & CGE_FILE_ERROR)
         return 0;
 
@@ -198,6 +229,9 @@ error:
 }
 
 int CgeFileFlush(CgeFile *file) {
+    assert(file != NULL);
+    assert(file->handle != INVALID_HANDLE_VALUE);
+
     if (!FlushFileBuffers(file->handle))
         goto error;
 
@@ -212,6 +246,9 @@ error:
 int CgeFileSize(CgeFile *file, int64_t *size) {
     LARGE_INTEGER dummy;
 
+    assert(file != NULL);
+    assert(file->handle != INVALID_HANDLE_VALUE);
+
     if (file->flags & CGE_FILE_ERROR)
         return 0;
 
@@ -228,15 +265,22 @@ error:
 }
 
 int CgeFileFlags(CgeFile *file, int *flags) {
+    assert(file != NULL);
+    assert(flags != NULL);
+
     *flags = file->flags;
     return 1;
 }
 
 int CgeFileClear(CgeFile *file) {
+    assert(file != NULL);
+
     file->flags &= ~CGE_FILE_ERROR;
     return 1;
 }
 
 int CgeFileErrorCode(CgeFile *file) {
+    assert(file != NULL);
+
     return file->lastError;
 }