一个简单的文本编辑器

				/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */				/* 				 * Reverse plugin				 * Roberto Majadas 				 *				 * Reverse text				 */								#include 				#include 								#include "document.h"				#include "view.h"				#include "plugin.h"												static void				destroy_plugin (PluginData *pd)				{					g_free (pd->name);				}								static void				reverse (void)				{					GeditDocument *doc;					GeditView *view = gedit_view_active();					gchar *buffer ;					gchar tmp ;					gint buffer_length ;					gint i;					gint *start = g_new(gint, 1);					gint *end = g_new(gint, 1);										if (view == NULL)						return;									doc = view->doc;									buffer_length = gedit_document_get_buffer_length (doc);					buffer = gedit_document_get_buffer (doc);									if (!gedit_view_get_selection (view, start, end))					{						*start = 0;						*end = buffer_length;					}									for (i=*start; i < ( *start + (*end - *start) / 2 ); i++)					{						tmp = buffer [i];						buffer [i] = buffer [*end + *start - i - 1];						buffer [*end + *start - i - 1] = tmp;					}				     					gedit_document_delete_text (doc, 0, buffer_length, TRUE);					gedit_document_insert_text (doc, buffer, 0, TRUE);									g_free (start);					g_free (end);					g_free (buffer);				     				}				gint				init_plugin (PluginData *pd)				{					/* initialize */				     					pd->destroy_plugin = destroy_plugin;					pd->name = _("Reverse");					pd->desc = _("Reverse text");					pd->long_desc = _("Reverse text");					pd->author = "Roberto Majadas ";					pd->needs_a_document = TRUE;					pd->modifies_an_existing_doc = TRUE;									pd->private_data = (gpointer)reverse;										return PLUGIN_OK;				}