Add tempfile feature

code/logic/fossil/io/stream.h

@@ -278,6 +278,15 @@ int32_t fossil_fstream_delete(const char *filename);
  */
 int fossil_fstream_get_type(const char *filename);
 
+/**
+ * Create a temporary file.
+ *
+ * This function creates a temporary file and returns its name.
+ *
+ * @return A pointer to the name of the temporary file, or NULL on failure.
+ */
+fossil_fstream_t fossil_fstream_tempfile(void);
+
 /**
  * Check if a file is readable.
  *
@@ -776,6 +785,17 @@ namespace fossil {
                 return fossil_fstream_get_type(filename.c_str());
             }
 
+            /**
+             * Create a temporary file.
+             *
+             * This function creates a temporary file and returns its name.
+             *
+             * @return A pointer to the name of the temporary file, or NULL on failure.
+             */
+            static fossil_fstream_t tempfile() {
+                return fossil_fstream_tempfile();
+            }
+
             /**
              * Check if a file is readable.
              *

code/logic/stream.c

@@ -23,6 +23,9 @@
     #include <windows.h>
 #else
     #include <unistd.h>
+    #ifndef _POSIX_C_SOURCE
+    extern int mkstemp(char *);
+    #endif
     #include <fcntl.h>
 #endif
 
@@ -501,6 +504,34 @@ int32_t fossil_fstream_is_readable(const char *filename) {
 #endif
 }
 
+fossil_fstream_t fossil_fstream_tempfile(void) {
+    fossil_fstream_t temp_stream;
+    char temp_filename[FOSSIL_BUFFER_MEDIUM];
+
+#ifdef _WIN32
+    if (GetTempFileNameA(".", "fossil", 0, temp_filename) == 0) {
+        fprintf(stderr, "Error: Failed to create temporary file\n");
+        return (fossil_fstream_t){NULL, ""};
+    }
+#else
+    char template[] = "fossil_tempfile_XXXXXX";
+    int fd = mkstemp(template);
+    if (fd == -1) {
+        fprintf(stderr, "Error: Failed to create temporary file\n");
+        return (fossil_fstream_t){NULL, ""};
+    }
+    close(fd); // Close the file descriptor as it's no longer needed
+    strncpy(temp_filename, template, FOSSIL_BUFFER_MEDIUM);
+#endif
+
+    if (fossil_fstream_open(&temp_stream, temp_filename, "wb+") != FOSSIL_ERROR_OK) {
+        fprintf(stderr, "Error: Failed to open temporary file - %s\n", temp_filename);
+        return (fossil_fstream_t){NULL, ""};
+    }
+
+    return temp_stream;
+}
+
 int32_t fossil_fstream_is_writable(const char *filename) {
 #ifdef _WIN32
     DWORD attrs = GetFileAttributesA(filename);

code/tests/cases/test_stream.c

@@ -45,6 +45,31 @@ FOSSIL_TEARDOWN(c_stream_suite) {
 // as samples for library usage.
 // * * * * * * * * * * * * * * * * * * * * * * * *
 
+FOSSIL_TEST_CASE(c_test_stream_tempfile_creation) {
+    // Create a temporary file
+    fossil_fstream_t temp_stream = fossil_fstream_tempfile();
+
+    // Check if the temporary file is open
+    ASSUME_ITS_TRUE(fossil_fstream_is_open(&temp_stream));
+
+    // Close the temporary file
+    fossil_fstream_close(&temp_stream);
+}
+
+FOSSIL_TEST_CASE(c_test_stream_tempfile_cleanup) {
+    // Create a temporary file
+    fossil_fstream_t temp_stream = fossil_fstream_tempfile();
+
+    // Get the temporary file name
+    const char *temp_filename = temp_stream.filename;
+
+    // Close the temporary file
+    fossil_fstream_close(&temp_stream);
+
+    // Verify the temporary file is deleted
+    ASSUME_NOT_EQUAL_I32(0, fossil_fstream_file_exists(temp_filename));
+}
+
 FOSSIL_TEST_CASE(c_test_stream_let_write_and_read_file) {
     const char *filename = "testfile.txt";
     const char *content = "This is a test.";
@@ -238,6 +263,8 @@ FOSSIL_TEST_CASE(c_test_stream_setpos_and_getpos) {
 // * * * * * * * * * * * * * * * * * * * * * * * *
 
 FOSSIL_TEST_GROUP(c_file_tests) {
+    FOSSIL_TEST_ADD(c_stream_suite, c_test_stream_tempfile_creation);
+    FOSSIL_TEST_ADD(c_stream_suite, c_test_stream_tempfile_cleanup);
     FOSSIL_TEST_ADD(c_stream_suite, c_test_stream_let_write_and_read_file);
     FOSSIL_TEST_ADD(c_stream_suite, c_test_stream_let_open_and_close_file);
     FOSSIL_TEST_ADD(c_stream_suite, c_test_stream_multiple_files);

code/tests/cases/test_stream.cpp

@@ -45,6 +45,31 @@ FOSSIL_TEARDOWN(cpp_stream_suite) {
 // as samples for library usage.
 // * * * * * * * * * * * * * * * * * * * * * * * *
 
+FOSSIL_TEST_CASE(cpp_test_stream_tempfile_creation) {
+    // Create a temporary file
+    fossil_fstream_t temp_stream = fossil_fstream_tempfile();
+
+    // Check if the temporary file is open
+    ASSUME_ITS_TRUE(fossil_fstream_is_open(&temp_stream));
+
+    // Close the temporary file
+    fossil_fstream_close(&temp_stream);
+}
+
+FOSSIL_TEST_CASE(cpp_test_stream_tempfile_cleanup) {
+    // Create a temporary file
+    fossil_fstream_t temp_stream = fossil_fstream_tempfile();
+
+    // Get the temporary file name
+    const char *temp_filename = temp_stream.filename;
+
+    // Close the temporary file
+    fossil_fstream_close(&temp_stream);
+
+    // Verify the temporary file is deleted
+    ASSUME_NOT_EQUAL_I32(0, fossil_fstream_file_exists(temp_filename));
+}
+
 FOSSIL_TEST_CASE(cpp_test_stream_let_write_and_read_file) {
     const char *filename = "testfile.txt";
     const char *content = "This is a test.";
@@ -233,6 +258,31 @@ FOSSIL_TEST_CASE(cpp_test_stream_setpos_and_getpos) {
     fossil_fstream_close(&cpp_stream);
 }
 
+FOSSIL_TEST_CASE(cpp_test_stream_class_tempfile_creation) {
+    // Create a temporary file using the class method
+    fossil_fstream_t temp_stream = fossil::io::Stream::tempfile();
+
+    // Check if the temporary file is open
+    ASSUME_ITS_TRUE(fossil::io::Stream::is_open(&temp_stream));
+
+    // Close the temporary file
+    fossil::io::Stream::close(&temp_stream);
+}
+
+FOSSIL_TEST_CASE(cpp_test_stream_class_tempfile_cleanup) {
+    // Create a temporary file using the class method
+    fossil_fstream_t temp_stream = fossil::io::Stream::tempfile();
+
+    // Get the temporary file name
+    const char *temp_filename = temp_stream.filename;
+
+    // Close the temporary file
+    fossil::io::Stream::close(&temp_stream);
+
+    // Verify the temporary file is deleted
+    ASSUME_NOT_EQUAL_I32(0, fossil::io::Stream::file_exists(temp_filename));
+}
+
 FOSSIL_TEST_CASE(cpp_test_stream_class_write_and_read_file) {
     const char *filename = "testfile.txt";
     const char *content = "This is a test.";
@@ -373,6 +423,8 @@ FOSSIL_TEST_CASE(cpp_test_stream_class_get_permissions) {
 // * * * * * * * * * * * * * * * * * * * * * * * *
 
 FOSSIL_TEST_GROUP(cpp_file_tests) {
+    FOSSIL_TEST_ADD(cpp_stream_suite, cpp_test_stream_tempfile_creation);
+    FOSSIL_TEST_ADD(cpp_stream_suite, cpp_test_stream_tempfile_cleanup);
     FOSSIL_TEST_ADD(cpp_stream_suite, cpp_test_stream_let_write_and_read_file);
     FOSSIL_TEST_ADD(cpp_stream_suite, cpp_test_stream_let_open_and_close_file);
     FOSSIL_TEST_ADD(cpp_stream_suite, cpp_test_stream_multiple_files);
@@ -387,6 +439,8 @@ FOSSIL_TEST_GROUP(cpp_file_tests) {
     FOSSIL_TEST_ADD(cpp_stream_suite, cpp_test_stream_flush_file);
     FOSSIL_TEST_ADD(cpp_stream_suite, cpp_test_stream_setpos_and_getpos);
 
+    FOSSIL_TEST_ADD(cpp_stream_suite, cpp_test_stream_class_tempfile_creation);
+    FOSSIL_TEST_ADD(cpp_stream_suite, cpp_test_stream_class_tempfile_cleanup);
     FOSSIL_TEST_ADD(cpp_stream_suite, cpp_test_stream_class_write_and_read_file);
     FOSSIL_TEST_ADD(cpp_stream_suite, cpp_test_stream_class_open_and_close_file);
     FOSSIL_TEST_ADD(cpp_stream_suite, cpp_test_stream_class_multiple_files);