+++ /dev/null
-#include "stream.h"
-#include "fileref.h"
-#include "magic.h"
-#include <errno.h>
-#include <stdio.h>
-#include <glib.h>
-#include <glib/gstdio.h>
-
-#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 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 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.
- */
-strid_t
-glk_stream_iterate(strid_t str, glui32 *rockptr)
-{
- VALID_STREAM_OR_NULL(str, return NULL);
-
- GList *retnode;
-
- if(str == NULL)
- retnode = glk_data->stream_list;
- else
- retnode = str->stream_list->next;
- strid_t retval = retnode? (strid_t)retnode->data : NULL;
-
- /* Store the stream's rock in rockptr */
- if(retval && rockptr)
- *rockptr = glk_stream_get_rock(retval);
-
- return retval;
-}
-
-/**
- * glk_stream_get_rock:
- * @str: A stream.
- *
- * 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)
-{
- VALID_STREAM(str, return 0);
- return str->rock;
-}
-
-/**
- * glk_stream_set_current:
- * @str: An output stream, or %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)
- {
- ILLEGAL("Cannot set current stream to non output stream");
- return;
- }
-
- glk_data->current_stream = str;
-}
-
-/**
- * glk_stream_get_current:
- *
- * Returns the current stream, or %NULL if there is none.
- *
- * Returns: A stream, or %NULL.
- */
-strid_t
-glk_stream_get_current()
-{
- return glk_data->current_stream;
-}
-
-/**
- * glk_put_char:
- * @ch: A character in Latin-1 encoding.
- *
- * 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)
-{
- 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 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)
-{
- 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);
-}
-
-/**
- * glk_put_buffer:
- * @buf: An array of characters in Latin-1 encoding.
- * @len: Length of @buf.
- *
- * 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)
-{
- 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);
-}
-
-/**
- * glk_stream_open_memory:
- * @buf: An allocated buffer, or %NULL.
- * @buflen: Length of @buf.
- * @fmode: Mode in which the buffer will be opened. Must be one of
- * #filemode_Read, #filemode_Write, or #filemode_ReadWrite.
- * @rock: The new stream's rock value.
- *
- * Opens a stream which reads from or writes to a space in memory. @buf points
- * to the buffer where output will be read from or written to. @buflen is the
- * length of the buffer.
- *
- * Unicode values (characters greater than 255) cannot be written to the buffer.
- * If you try, they will be stored as 0x3F (<code>"?"</code>) characters.
- *
- * 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 str = stream_new_common(rock, fmode, STREAM_TYPE_MEMORY);
- str->buffer = buf;
- str->mark = 0;
- str->buflen = buflen;
- str->unicode = FALSE;
- return str;
-}
-
-/**
- * glk_stream_open_memory_uni:
- * @buf: An allocated buffer, or %NULL.
- * @buflen: Length of @buf.
- * @fmode: Mode in which the buffer will be opened. Must be one of
- * #filemode_Read, #filemode_Write, or #filemode_ReadWrite.
- * @rock: The new stream's rock value.
- *
- * Works just like glk_stream_open_memory(), except that the buffer is an array
- * 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)
-{
- g_return_val_if_fail(fmode != filemode_WriteAppend, NULL);
-
- 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)
-{
- VALID_FILEREF(fileref, return NULL);
-
- gchar *modestr;
- /* Binary mode is 0x000, text mode 0x100 */
- gboolean binary = !(fileref->usage & fileusage_TextMode);
- switch(fmode)
- {
- case filemode_Read:
- if(!g_file_test(fileref->filename, G_FILE_TEST_EXISTS)) {
- ILLEGAL_PARAM("Tried to open a nonexistent file, '%s', in read mode", fileref->filename);
- return NULL;
- }
- modestr = g_strdup(binary? "rb" : "r");
- break;
- case filemode_Write:
- modestr = g_strdup(binary? "wb" : "w");
- break;
- case filemode_WriteAppend:
- modestr = g_strdup(binary? "ab" : "a");
- break;
- case filemode_ReadWrite:
- if( g_file_test(fileref->filename, G_FILE_TEST_EXISTS) ) {
- modestr = g_strdup(binary? "r+b" : "r+");
- } else {
- modestr = g_strdup(binary? "w+b" : "w+");
- }
- break;
- default:
- ILLEGAL_PARAM("Invalid file mode: %u", fmode);
- return NULL;
- }
-
- FILE *fp = g_fopen(fileref->filename, modestr);
- g_free(modestr);
- if(fp == NULL) {
- IO_WARNING( "Error opening file", fileref->filename, g_strerror(errno) );
- return NULL;
- }
-
- /* If they opened a file in write mode but didn't specifically get
- permission to do so, complain if the file already exists */
- if(fileref->orig_filemode == filemode_Read && fmode != filemode_Read) {
- gdk_threads_enter();
-
- GtkWidget *dialog = gtk_message_dialog_new(NULL, 0,
- GTK_MESSAGE_QUESTION, GTK_BUTTONS_YES_NO,
- "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) {
- if(fclose(fp) != 0)
- IO_WARNING( "Error closing file", fileref->filename, g_strerror(errno) );
- return NULL;
- }
- }
-
- 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 str;
-}
-
-/**
- * glk_stream_open_file:
- * @fileref: Indicates the file which will be opened.
- * @fmode: Mode in which the file will be opened. Can be any of #filemode_Read,
- * #filemode_Write, #filemode_WriteAppend, or #filemode_ReadWrite.
- * @rock: The new stream's rock value.
- *
- * Opens a stream which reads to or writes from a disk file. If @fmode is
- * #filemode_Read, the file must already exist; for the other modes, an empty
- * file is created if none exists. If @fmode is #filemode_Write, and the file
- * 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.
- *
- * 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
- * (<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.
- */
-strid_t
-glk_stream_open_file(frefid_t fileref, glui32 fmode, glui32 rock)
-{
- return file_stream_new(fileref, fmode, rock, FALSE);
-}
-
-/**
- * glk_stream_open_file_uni:
- * @fileref: Indicates the file which will be opened.
- * @fmode: Mode in which the file will be opened. Can be any of #filemode_Read,
- * #filemode_Write, #filemode_WriteAppend, or #filemode_ReadWrite.
- * @rock: The new stream's rock value.
- *
- * This works just like glk_stream_open_file(), except that in binary mode,
- * 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 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.
- */
-strid_t
-glk_stream_open_file_uni(frefid_t fileref, glui32 fmode, glui32 rock)
-{
- return file_stream_new(fileref, fmode, rock, TRUE);
-}
-
-/**
- * glk_stream_close:
- * @str: Stream to close.
- * @result: Pointer to a #stream_result_t, or %NULL.
- *
- * Closes the stream @str. The @result argument points to a structure which is
- * filled in with the final character counts of the stream. If you do not care
- * about these, you may pass %NULL as the @result argument.
- *
- * 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. 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)
-{
- VALID_STREAM(str, return);
-
- /* Free resources associated with one specific type of stream */
- switch(str->type)
- {
- case STREAM_TYPE_WINDOW:
- ILLEGAL("Attempted to close a window stream. Use glk_window_close() instead.");
- return;
-
- case STREAM_TYPE_MEMORY:
- /* Do nothing */
- break;
-
- case STREAM_TYPE_FILE:
- if(fclose(str->file_pointer) != 0)
- IO_WARNING( "Failed to close file", str->filename, g_strerror(errno) );
- g_free(str->filename);
- break;
- default:
- 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 */
- 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(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);
-}
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