From e25a988d098a075f5519090c24237c3b97bc1323 Mon Sep 17 00:00:00 2001
From: Benny Prijono <bennylp@teluu.com>
Date: Mon, 7 Nov 2005 15:47:28 +0000
Subject: Added file I/O and file access API

git-svn-id: http://svn.pjsip.org/repos/pjproject/main@18 74dad513-b988-da41-8d7b-12977e46ad98
---
 pjlib/src/pj/file_access_win32.c | 172 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 172 insertions(+)
 create mode 100644 pjlib/src/pj/file_access_win32.c

(limited to 'pjlib/src/pj/file_access_win32.c')

diff --git a/pjlib/src/pj/file_access_win32.c b/pjlib/src/pj/file_access_win32.c
new file mode 100644
index 00000000..36405658
--- /dev/null
+++ b/pjlib/src/pj/file_access_win32.c
@@ -0,0 +1,172 @@
+/* $Id$ */
+#include <pj/file_access.h>
+#include <pj/assert.h>
+#include <pj/errno.h>
+#include <windows.h>
+#include <time.h>
+
+/*
+ * pj_file_exists()
+ */
+PJ_DEF(pj_bool_t) pj_file_exists(const char *filename)
+{
+    HANDLE hFile;
+
+    PJ_ASSERT_RETURN(filename != NULL, 0);
+
+    hFile = CreateFile(filename, READ_CONTROL, FILE_SHARE_READ, NULL,
+                       OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
+    if (hFile == INVALID_HANDLE_VALUE)
+        return 0;
+
+    CloseHandle(hFile);
+    return PJ_TRUE;
+}
+
+
+/*
+ * pj_file_size()
+ */
+PJ_DEF(pj_off_t) pj_file_size(const char *filename)
+{
+    HANDLE hFile;
+    DWORD sizeLo, sizeHi;
+    pj_off_t size;
+
+    PJ_ASSERT_RETURN(filename != NULL, -1);
+
+    hFile = CreateFile(filename, READ_CONTROL, 
+                       FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
+                       OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
+    if (hFile == INVALID_HANDLE_VALUE)
+        return -1;
+
+    sizeLo = GetFileSize(hFile, &sizeHi);
+    if (sizeLo == INVALID_FILE_SIZE) {
+        DWORD dwStatus = GetLastError();
+        if (dwStatus != NO_ERROR) {
+            CloseHandle(hFile);
+            return -1;
+        }
+    }
+
+    size = sizeHi;
+    size = (size << 32) + sizeLo;
+
+    CloseHandle(hFile);
+    return size;
+}
+
+
+/*
+ * pj_file_delete()
+ */
+PJ_DEF(pj_status_t) pj_file_delete(const char *filename)
+{
+    PJ_ASSERT_RETURN(filename != NULL, PJ_EINVAL);
+
+    if (DeleteFile(filename) == FALSE)
+        return PJ_RETURN_OS_ERROR(GetLastError());
+
+    return PJ_SUCCESS;
+}
+
+
+/*
+ * pj_file_move()
+ */
+PJ_DEF(pj_status_t) pj_file_move( const char *oldname, const char *newname)
+{
+    BOOL rc;
+
+    PJ_ASSERT_RETURN(oldname!=NULL && newname!=NULL, PJ_EINVAL);
+
+#if PJ_WIN32_WINNT >= 0x0400
+    rc = MoveFileEx(oldname, newname, 
+                    MOVEFILE_COPY_ALLOWED|MOVEFILE_REPLACE_EXISTING);
+#else
+    rc = MoveFile(oldname, newname);
+#endif
+
+    if (!rc)
+        return PJ_RETURN_OS_ERROR(GetLastError());
+
+    return PJ_SUCCESS;
+}
+
+
+static pj_status_t file_time_to_time_val(const FILETIME *file_time,
+                                         pj_time_val *time_val)
+{
+    SYSTEMTIME systemTime, localTime;
+    struct tm tm;
+
+    if (!FileTimeToSystemTime(file_time, &systemTime))
+        return -1;
+
+    if (!SystemTimeToTzSpecificLocalTime(NULL, &systemTime, &localTime))
+        return -1;
+
+    memset(&tm, 0, sizeof(struct tm));
+    tm.tm_year = localTime.wYear - 1900;
+    tm.tm_mon = localTime.wMonth - 1;
+    tm.tm_mday = localTime.wDay;
+    tm.tm_hour = localTime.wHour;
+    tm.tm_min = localTime.wMinute;
+    tm.tm_sec = localTime.wSecond;
+    tm.tm_isdst = 0;
+
+    time_val->sec = mktime(&tm);
+    if (time_val->sec == (time_t)-1)
+        return -1;
+
+    time_val->msec = localTime.wMilliseconds;
+
+    return PJ_SUCCESS;
+}
+
+/*
+ * pj_file_getstat()
+ */
+PJ_DEF(pj_status_t) pj_file_getstat(const char *filename, pj_file_stat *stat)
+{
+    HANDLE hFile;
+    DWORD sizeLo, sizeHi;
+    FILETIME creationTime, accessTime, writeTime;
+
+    PJ_ASSERT_RETURN(filename!=NULL && stat!=NULL, PJ_EINVAL);
+
+    hFile = CreateFile(filename, READ_CONTROL, FILE_SHARE_READ, NULL,
+                       OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
+    if (hFile == INVALID_HANDLE_VALUE)
+        return PJ_RETURN_OS_ERROR(GetLastError());
+
+    sizeLo = GetFileSize(hFile, &sizeHi);
+    if (sizeLo == INVALID_FILE_SIZE) {
+        DWORD dwStatus = GetLastError();
+        if (dwStatus != NO_ERROR) {
+            CloseHandle(hFile);
+            return PJ_RETURN_OS_ERROR(dwStatus);
+        }
+    }
+
+    stat->size = sizeHi;
+    stat->size = (stat->size << 32) + sizeLo;
+
+    if (GetFileTime(hFile, &creationTime, &accessTime, &writeTime)==FALSE) {
+        DWORD dwStatus = GetLastError();
+        CloseHandle(hFile);
+        return PJ_RETURN_OS_ERROR(dwStatus);
+    }
+
+    CloseHandle(hFile);
+
+    if (file_time_to_time_val(&creationTime, &stat->ctime) != PJ_SUCCESS)
+        return PJ_RETURN_OS_ERROR(GetLastError());
+
+    file_time_to_time_val(&accessTime, &stat->atime);
+    file_time_to_time_val(&writeTime, &stat->mtime);
+
+    return PJ_SUCCESS;
+}
+
-- 
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