#include "stream.h"
#include "fileref.h"
+#include "magic.h"
+#include <errno.h>
+#include <stdio.h>
#include <glib.h>
#include <glib/gstdio.h>
-/* Global current stream */
-static strid_t current_stream = NULL;
-/* List of streams currently in existence */
-static GList *stream_list = NULL;
+#include "chimara-glk-private.h"
+extern ChimaraGlkPrivate *glk_data;
+
+/* Internal function: create a stream with a specified rock value */
+static strid_t
+stream_new_common(glui32 rock, glui32 fmode, enum StreamType type)
+{
+ strid_t str = g_new0(struct glk_stream_struct, 1);
+ str->magic = MAGIC_STREAM;
+ str->rock = rock;
+ str->file_mode = fmode;
+ str->type = type;
+
+ /* Add it to the global stream list */
+ glk_data->stream_list = g_list_prepend(glk_data->stream_list, str);
+ str->stream_list = glk_data->stream_list;
+
+ return str;
+}
/* Internal function: create a window stream to go with window. */
strid_t
window_stream_new(winid_t window)
{
/* Create stream and connect it to window */
- strid_t s = g_new0(struct glk_stream_struct, 1);
- s->file_mode = filemode_Write;
- s->stream_type = STREAM_TYPE_WINDOW;
- s->window = window;
- /* Add it to the global stream list */
- stream_list = g_list_prepend(stream_list, s);
- s->stream_list = stream_list;
-
- return s;
+ strid_t str = stream_new_common(0, filemode_Write, STREAM_TYPE_WINDOW);
+ str->window = window;
+ str->style = "normal";
+ return str;
}
/**
* glk_stream_iterate:
- * @str: A stream, or #NULL.
- * @rockptr: Return location for the next window's rock, or #NULL.
- *
- * Iterates over the list of streams; if @str is #NULL, it returns the first
- * stream, otherwise the next stream after @str. If there are no more, it
- * returns #NULL. The stream's rock is stored in @rockptr. If you don't want
- * the rocks to be returned, you may set @rockptr to #NULL.
+ * @str: A stream, or %NULL.
+ * @rockptr: Return location for the next window's rock, or %NULL.
*
- * The order in which streams are returned is arbitrary. The order may change
- * every time you create or destroy a stream, invalidating the iteration.
+ * Iterates through all the existing streams. See <link
+ * linkend="chimara-Iterating-Through-Opaque-Objects">Iterating Through Opaque
+ * Objects</link>.
*
- * Returns: the next stream, or #NULL if there are no more.
+ * Returns: the next stream, or %NULL if there are no more.
*/
strid_t
glk_stream_iterate(strid_t str, glui32 *rockptr)
{
+ VALID_STREAM_OR_NULL(str, return NULL);
+
GList *retnode;
if(str == NULL)
- retnode = stream_list;
+ retnode = glk_data->stream_list;
else
retnode = str->stream_list->next;
strid_t retval = retnode? (strid_t)retnode->data : NULL;
* glk_stream_get_rock:
* @str: A stream.
*
- * Returns the stream @str's rock value.
+ * Retrieves the stream @str's rock value. See <link
+ * linkend="chimara-Rocks">Rocks</link>.
*
* Returns: A rock value.
*/
glui32
glk_stream_get_rock(strid_t str)
{
- g_return_val_if_fail(str != NULL, 0);
+ VALID_STREAM(str, return 0);
return str->rock;
}
/**
* glk_stream_set_current:
- * @str: An output stream, or NULL.
+ * @str: An output stream, or %NULL.
*
- * Sets the current stream to @str, or to nothing if @str is #NULL.
+ * Sets the current stream to @str, which must be an output stream. You may set
+ * the current stream to %NULL, which means the current stream is not set to
+ * anything.
*/
void
glk_stream_set_current(strid_t str)
{
+ VALID_STREAM_OR_NULL(str, return);
+
if(str != NULL && str->file_mode == filemode_Read)
{
- g_warning("glk_stream_set_current: "
- "Cannot set current stream to non output stream");
+ ILLEGAL("Cannot set current stream to non output stream");
return;
}
- current_stream = str;
+ glk_data->current_stream = str;
}
/**
* glk_stream_get_current:
*
- * Returns the current stream, or #NULL if there is none.
+ * Returns the current stream, or %NULL if there is none.
*
- * Returns: A stream.
+ * Returns: A stream, or %NULL.
*/
strid_t
glk_stream_get_current()
{
- return current_stream;
+ return glk_data->current_stream;
}
/**
* glk_put_char:
* @ch: A character in Latin-1 encoding.
*
- * Prints one character @ch to the current stream.
+ * Prints one character to the current stream. As with all basic functions, the
+ * character is assumed to be in the Latin-1 character encoding. See <link
+ * linkend="chimara-Character-Encoding">Character Encoding</link>.
*/
void
glk_put_char(unsigned char ch)
{
- /* Illegal to print to the current stream if it is NULL */
- g_return_if_fail(current_stream != NULL);
- glk_put_char_stream(current_stream, ch);
+ VALID_STREAM(glk_data->current_stream, return);
+ glk_put_char_stream(glk_data->current_stream, ch);
+}
+
+/**
+ * glk_put_char_uni:
+ * @ch: A Unicode code point.
+ *
+ * Prints one character to the current stream. The character is assumed to be a
+ * Unicode code point. See <link linkend="chimara-Character-Encoding">Character
+ * Encoding</link>.
+ */
+void
+glk_put_char_uni(glui32 ch)
+{
+ VALID_STREAM(glk_data->current_stream, return);
+ glk_put_char_stream_uni(glk_data->current_stream, ch);
}
/**
* glk_put_string:
* @s: A null-terminated string in Latin-1 encoding.
*
- * Prints @s to the current stream.
+ * Prints a null-terminated string to the current stream. It is exactly
+ * equivalent to
+ * |[
+ * for (ptr = @s; *ptr; ptr++)
+ * #glk_put_char(*ptr);
+ * ]|
+ * However, it may be more efficient.
*/
void
glk_put_string(char *s)
{
- /* Illegal to print to the current stream if it is NULL */
- g_return_if_fail(current_stream != NULL);
- glk_put_string_stream(current_stream, s);
+ VALID_STREAM(glk_data->current_stream, return);
+ glk_put_string_stream(glk_data->current_stream, s);
+}
+
+/**
+ * glk_put_string_uni:
+ * @s: A zero-terminated string of Unicode code points.
+ *
+ * Prints a string of Unicode characters to the current stream. It is equivalent
+ * to a series of glk_put_char_uni() calls. A string ends on a #glui32 whose
+ * value is 0.
+ */
+void
+glk_put_string_uni(glui32 *s)
+{
+ VALID_STREAM(glk_data->current_stream, return);
+ glk_put_string_stream_uni(glk_data->current_stream, s);
}
/**
* @buf: An array of characters in Latin-1 encoding.
* @len: Length of @buf.
*
- * Prints @buf to the current stream.
+ * Prints a block of characters to the current stream. It is exactly equivalent
+ * to:
+ * |[
+ * for (i = 0; i < @len; i++)
+ * #glk_put_char(@buf[i]);
+ * ]|
+ * However, it may be more efficient.
*/
void
glk_put_buffer(char *buf, glui32 len)
{
- /* Illegal to print to the current stream if it is NULL */
- g_return_if_fail(current_stream != NULL);
- glk_put_buffer_stream(current_stream, buf, len);
+ VALID_STREAM(glk_data->current_stream, return);
+ glk_put_buffer_stream(glk_data->current_stream, buf, len);
+}
+
+/**
+ * glk_put_buffer_uni:
+ * @buf: An array of Unicode code points.
+ * @len: Length of @buf.
+ *
+ * Prints a block of Unicode characters to the current stream. It is equivalent
+ * to a series of glk_put_char_uni() calls.
+ */
+void
+glk_put_buffer_uni(glui32 *buf, glui32 len)
+{
+ VALID_STREAM(glk_data->current_stream, return);
+ glk_put_buffer_stream_uni(glk_data->current_stream, buf, len);
}
/**
* to the buffer where output will be read from or written to. @buflen is the
* length of the buffer.
*
- * When outputting, if more than @buflen characters are written to the stream,
- * all of them beyond the buffer length will be thrown away, so as not to
- * overwrite the buffer. (The character count of the stream will still be
- * maintained correctly. That is, it will count the number of characters written
- * into the stream, not the number that fit into the buffer.)
- *
- * If @buf is %NULL, or for that matter if @buflen is zero, then <emphasis>
- * everything</emphasis> written to the stream is thrown away. This may be
- * useful if you are interested in the character count.
- *
- * When inputting, if more than @buflen characters are read from the stream, the
- * stream will start returning -1 (signalling end-of-file.) If @buf is %NULL,
- * the stream will always return end-of-file.
- *
- * The data is written to the buffer exactly as it was passed to the printing
- * functions (glk_put_char(), etc.); input functions will read the data exactly
- * as it exists in memory. No platform-dependent cookery will be done on it.
- * [You can write a disk file in text mode, but a memory stream is effectively
- * always in binary mode.]
- *
* Unicode values (characters greater than 255) cannot be written to the buffer.
- * If you try, they will be stored as 0x3F ("?") characters.
+ * If you try, they will be stored as 0x3F (<code>"?"</code>) characters.
*
- * Whether reading or writing, the contents of the buffer are undefined until
- * the stream is closed. The library may store the data there as it is written,
- * or deposit it all in a lump when the stream is closed. It is illegal to
- * change the contents of the buffer while the stream is open.
+ * Returns: the new stream, or %NULL on error.
*/
strid_t
glk_stream_open_memory(char *buf, glui32 buflen, glui32 fmode, glui32 rock)
{
g_return_val_if_fail(fmode != filemode_WriteAppend, NULL);
- strid_t s = g_new0(struct glk_stream_struct, 1);
- s->rock = rock;
- s->file_mode = fmode;
- s->stream_type = STREAM_TYPE_MEMORY;
- s->buffer = buf;
- s->mark = 0;
- s->buflen = buflen;
- s->unicode = FALSE;
-
- /* Add it to the global stream list */
- stream_list = g_list_prepend(stream_list, s);
- s->stream_list = stream_list;
-
- return s;
+ strid_t str = stream_new_common(rock, fmode, STREAM_TYPE_MEMORY);
+ str->buffer = buf;
+ str->mark = 0;
+ str->buflen = buflen;
+ str->unicode = FALSE;
+ return str;
}
/**
* of 32-bit words, instead of bytes. This allows you to write and read any
* Unicode character. The @buflen is the number of words, not the number of
* bytes.
+ *
+ * Returns: the new stream, or %NULL on error.
*/
strid_t
-glk_stream_open_memory_uni(glui32 *buf, glui32 buflen, glui32 fmode,
- glui32 rock)
+glk_stream_open_memory_uni(glui32 *buf, glui32 buflen, glui32 fmode, glui32 rock)
{
g_return_val_if_fail(fmode != filemode_WriteAppend, NULL);
- strid_t s = g_new0(struct glk_stream_struct, 1);
- s->rock = rock;
- s->file_mode = fmode;
- s->stream_type = STREAM_TYPE_MEMORY;
- s->ubuffer = buf;
- s->mark = 0;
- s->buflen = buflen;
- s->unicode = TRUE;
-
- /* Add it to the global stream list */
- stream_list = g_list_prepend(stream_list, s);
- s->stream_list = stream_list;
-
- return s;
+ strid_t str = stream_new_common(rock, fmode, STREAM_TYPE_MEMORY);
+ str->ubuffer = buf;
+ str->mark = 0;
+ str->buflen = buflen;
+ str->unicode = TRUE;
+ return str;
}
/* Internal function: create a stream using the given parameters. */
static strid_t
file_stream_new(frefid_t fileref, glui32 fmode, glui32 rock, gboolean unicode)
{
- g_return_val_if_fail(fileref != NULL, NULL);
+ VALID_FILEREF(fileref, return NULL);
gchar *modestr;
/* Binary mode is 0x000, text mode 0x100 */
{
case filemode_Read:
if(!g_file_test(fileref->filename, G_FILE_TEST_EXISTS)) {
- g_warning("glk_stream_open_file: Tried to open a file in read "
- "mode that didn't exist!");
+ ILLEGAL_PARAM("Tried to open a nonexistent file, '%s', in read mode", fileref->filename);
return NULL;
}
modestr = g_strdup(binary? "rb" : "r");
}
break;
default:
- g_warning("glk_stream_open_file: Invalid file mode");
+ ILLEGAL_PARAM("Invalid file mode: %u", fmode);
return NULL;
}
FILE *fp = g_fopen(fileref->filename, modestr);
g_free(modestr);
if(fp == NULL) {
- g_warning("glk_stream_open_file: Error opening file");
+ IO_WARNING( "Error opening file", fileref->filename, g_strerror(errno) );
return NULL;
}
GtkWidget *dialog = gtk_message_dialog_new(NULL, 0,
GTK_MESSAGE_QUESTION, GTK_BUTTONS_YES_NO,
- "File %s already exists. Overwrite?", fileref->filename);
+ "File '%s' already exists. Overwrite?", fileref->filename);
gint response = gtk_dialog_run(GTK_DIALOG(dialog));
gtk_widget_destroy(dialog);
gdk_threads_leave();
if(response != GTK_RESPONSE_YES) {
- fclose(fp);
+ if(fclose(fp) != 0)
+ IO_WARNING( "Error closing file", fileref->filename, g_strerror(errno) );
return NULL;
}
}
- strid_t s = g_new0(struct glk_stream_struct, 1);
- s->rock = rock;
- s->file_mode = fmode;
- s->stream_type = STREAM_TYPE_FILE;
- s->file_pointer = fp;
- s->binary = binary;
- s->unicode = unicode;
- s->filename = g_filename_to_utf8(fileref->filename, -1, NULL, NULL, NULL);
- if(s->filename == NULL)
- s->filename = g_strdup("Unknown file name"); /* fail silently */
- /* Add it to the global stream list */
- stream_list = g_list_prepend(stream_list, s);
- s->stream_list = stream_list;
+ strid_t str = stream_new_common(rock, fmode, STREAM_TYPE_FILE);
+ str->file_pointer = fp;
+ str->binary = binary;
+ str->unicode = unicode;
+ str->filename = g_filename_to_utf8(fileref->filename, -1, NULL, NULL, NULL);
+ if(str->filename == NULL)
+ str->filename = g_strdup("Unknown file name"); /* fail silently */
- return s;
+ return str;
}
/**
* already exists, it is truncated down to zero length (an empty file). If
* @fmode is #filemode_WriteAppend, the file mark is set to the end of the
* file.
- *
- * The file may be written in text or binary mode; this is determined by the
- * @fileref argument. Similarly, platform-dependent attributes such as file
- * type are determined by @fileref.
*
* When writing in binary mode, Unicode values (characters greater than 255)
- * cannot be written to the file. If you try, they will be stored as 0x3F ("?")
- * characters. In text mode, Unicode values are stored in UTF-8.
+ * cannot be written to the file. If you try, they will be stored as 0x3F
+ * (<code>"?"</code>) characters. In text mode, Unicode values may be stored
+ * exactly, approximated, or abbreviated, depending on what the platform's text
+ * files support.
*
* Returns: A new stream, or %NULL if the file operation failed.
*/
* characters are written and read as four-byte (big-endian) values. This
* allows you to write any Unicode character.
*
- * In text mode, the file is written and read in UTF-8.
+ * In text mode, the file is written and read in a platform-dependent way, which
+ * may or may not handle all Unicode characters. A text-mode file created with
+ * glk_stream_open_file_uni() may have the same format as a text-mode file
+ * created with glk_stream_open_file(); or it may use a more Unicode-friendly
+ * format.
*
* Returns: A new stream, or %NULL if the file operation failed.
*/
* If @str is the current output stream, the current output stream is set to
* %NULL.
*
- * You cannot close window streams; use glk_window_close() instead.
+ * You cannot close window streams; use glk_window_close() instead. See <link
+ * linkend="chimara-Window-Opening-Closing-and-Constraints">Window Opening,
+ * Closing, and Constraints</link>.
*/
void
glk_stream_close(strid_t str, stream_result_t *result)
{
- g_return_if_fail(str != NULL);
+ VALID_STREAM(str, return);
/* Free resources associated with one specific type of stream */
- switch(str->stream_type)
+ switch(str->type)
{
case STREAM_TYPE_WINDOW:
- g_warning("%s: Attempted to close a window stream. Use glk_window_"
- "close() instead.", __func__);
+ ILLEGAL("Attempted to close a window stream. Use glk_window_close() instead.");
return;
case STREAM_TYPE_MEMORY:
case STREAM_TYPE_FILE:
if(fclose(str->file_pointer) != 0)
- g_warning("%s: Failed to close file '%s'.", __func__,
- str->filename);
+ IO_WARNING( "Failed to close file", str->filename, g_strerror(errno) );
g_free(str->filename);
break;
default:
- g_warning("%s: Closing this type of stream not supported.",
- __func__);
+ ILLEGAL_PARAM("Unknown stream type: %u", str->type);
return;
}
stream_close_common(str, result);
}
+/* Internal function: Stuff to do upon closing any type of stream. */
void
stream_close_common(strid_t str, stream_result_t *result)
{
/* Remove the stream from the global stream list */
- stream_list = g_list_delete_link(stream_list, str->stream_list);
+ glk_data->stream_list = g_list_delete_link(glk_data->stream_list, str->stream_list);
+
/* If it was the current output stream, set that to NULL */
- if(current_stream == str)
- current_stream = NULL;
+ if(glk_data->current_stream == str)
+ glk_data->current_stream = NULL;
+
/* If it was one or more windows' echo streams, set those to NULL */
winid_t win;
for(win = glk_window_iterate(NULL, NULL); win;
win = glk_window_iterate(win, NULL))
if(win->echo_stream == str)
win->echo_stream = NULL;
+
/* Return the character counts */
if(result)
{
result->readcount = str->read_count;
result->writecount = str->write_count;
}
+
+ str->magic = MAGIC_FREE;
g_free(str);
}
projects / projects / chimara / chimara.git / blobdiff