git.maemo.org Git - modest/blob - src/modest-formatter.c

   1 /* Copyright (c) 2006, Nokia Corporation
   2  * All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions are
   6  * met:
   7  *
   8  * * Redistributions of source code must retain the above copyright
   9  *   notice, this list of conditions and the following disclaimer.
  10  * * Redistributions in binary form must reproduce the above copyright
  11  *   notice, this list of conditions and the following disclaimer in the
  12  *   documentation and/or other materials provided with the distribution.
  13  * * Neither the name of the Nokia Corporation nor the names of its
  14  *   contributors may be used to endorse or promote products derived from
  15  *   this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  18  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  19  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  20  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
  21  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  22  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  23  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  24  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  25  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  26  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  27  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30 #include <glib/gi18n.h>
  31 #include <string.h>
  32 #include <tny-header.h>
  33 #include <tny-simple-list.h>
  34 #include <tny-gtk-text-buffer-stream.h>
  35 #include <tny-camel-stream.h>
  36 #include <camel/camel-stream-mem.h>
  37 #include "modest-formatter.h"
  38 #include "modest-text-utils.h"
  39 #include "modest-tny-platform-factory.h"
  40 #include <modest-runtime.h>
  41
  42 typedef struct _ModestFormatterPrivate ModestFormatterPrivate;
  43 struct _ModestFormatterPrivate {
  44         gchar *content_type;
  45         gchar *signature;
  46 };
  47 #define MODEST_FORMATTER_GET_PRIVATE(o)  (G_TYPE_INSTANCE_GET_PRIVATE((o), \
  48                                           MODEST_TYPE_FORMATTER, \
  49                                           ModestFormatterPrivate))
  50
  51 static GObjectClass *parent_class = NULL;
  52
  53 typedef gchar* FormatterFunc (ModestFormatter *self, const gchar *text, TnyHeader *header, GList *attachments);
  54
  55 static TnyMsg *modest_formatter_do (ModestFormatter *self, TnyMimePart *body,  TnyHeader *header,
  56                                     FormatterFunc func, GList *attachments);
  57
  58 static gchar*  modest_formatter_wrapper_cite   (ModestFormatter *self, const gchar *text, TnyHeader *header, GList *attachments);
  59 static gchar*  modest_formatter_wrapper_quote  (ModestFormatter *self, const gchar *text, TnyHeader *header, GList *attachments);
  60 static gchar*  modest_formatter_wrapper_inline (ModestFormatter *self, const gchar *text, TnyHeader *header, GList *attachments);
  61
  62 static gchar *
  63 extract_text (ModestFormatter *self, TnyMimePart *body)
  64 {
  65         TnyStream *stream;
  66         GtkTextBuffer *buf;
  67         GtkTextIter start, end;
  68         gchar *text, *converted_text;
  69         ModestFormatterPrivate *priv;
  70
  71         buf = gtk_text_buffer_new (NULL);
  72         stream = TNY_STREAM (tny_gtk_text_buffer_stream_new (buf));
  73         tny_stream_reset (stream);
  74         tny_mime_part_decode_to_stream (body, stream);
  75         tny_stream_reset (stream);
  76
  77         g_object_unref (G_OBJECT(stream));
  78
  79         gtk_text_buffer_get_bounds (buf, &start, &end);
  80         text = gtk_text_buffer_get_text (buf, &start, &end, FALSE);
  81         g_object_unref (G_OBJECT(buf));
  82
  83         /* Convert to desired content type if needed */
  84         priv = MODEST_FORMATTER_GET_PRIVATE (self);
  85
  86         if (strcmp (tny_mime_part_get_content_type (body), priv->content_type) == 0) {
  87                 if (!strcmp (priv->content_type, "text/html"))
  88                         converted_text = modest_text_utils_convert_to_html  (text);
  89                 else
  90                         converted_text = g_strdup (text);
  91
  92                 g_free (text);
  93                 text = converted_text;
  94         }
  95         return text;
  96 }
  97
  98 static void
  99 construct_from_text (TnyMimePart *part,
 100                      const gchar *text,
 101                      const gchar *content_type)
 102 {
 103         TnyStream *text_body_stream;
 104
 105         /* Create the stream */
 106         text_body_stream = TNY_STREAM (tny_camel_stream_new
 107                                        (camel_stream_mem_new_with_buffer
 108                                         (text, strlen(text))));
 109
 110         /* Construct MIME part */
 111         tny_stream_reset (text_body_stream);
 112         tny_mime_part_construct_from_stream (part, text_body_stream, content_type);
 113         tny_stream_reset (text_body_stream);
 114
 115         /* Clean */
 116         g_object_unref (G_OBJECT (text_body_stream));
 117 }
 118
 119 static TnyMsg *
 120 modest_formatter_do (ModestFormatter *self, TnyMimePart *body, TnyHeader *header, FormatterFunc func, GList *attachments)
 121 {
 122         TnyMsg *new_msg = NULL;
 123         gchar *body_text = NULL, *txt = NULL;
 124         ModestFormatterPrivate *priv;
 125         TnyMimePart *body_part = NULL;
 126
 127         g_return_val_if_fail (self, NULL);
 128         g_return_val_if_fail (header, NULL);
 129         g_return_val_if_fail (func, NULL);
 130
 131         /* Build new part */
 132         new_msg = modest_formatter_create_message (self, TRUE, attachments != NULL);
 133         body_part = modest_formatter_create_body_part (self, new_msg);
 134
 135         if (body)
 136                 body_text = extract_text (self, body);
 137         else
 138                 body_text = g_strdup ("");
 139
 140         txt = (gchar *) func (self, (const gchar*) body_text, header, attachments);
 141         priv = MODEST_FORMATTER_GET_PRIVATE (self);
 142         construct_from_text (TNY_MIME_PART (body_part), (const gchar*) txt, priv->content_type);
 143         g_object_unref (body_part);
 144
 145         /* Clean */
 146         g_free (body_text);
 147         g_free (txt);
 148
 149         return new_msg;
 150 }
 151
 152 TnyMsg *
 153 modest_formatter_cite (ModestFormatter *self, TnyMimePart *body, TnyHeader *header)
 154 {
 155         return modest_formatter_do (self, body, header, modest_formatter_wrapper_cite, NULL);
 156 }
 157
 158 TnyMsg *
 159 modest_formatter_quote (ModestFormatter *self, TnyMimePart *body, TnyHeader *header, GList *attachments)
 160 {
 161         return modest_formatter_do (self, body, header, modest_formatter_wrapper_quote, attachments);
 162 }
 163
 164 TnyMsg *
 165 modest_formatter_inline (ModestFormatter *self, TnyMimePart *body, TnyHeader *header, GList *attachments)
 166 {
 167         return modest_formatter_do (self, body, header, modest_formatter_wrapper_inline, attachments);
 168 }
 169
 170 TnyMsg *
 171 modest_formatter_attach (ModestFormatter *self, TnyMimePart *body, TnyHeader *header)
 172 {
 173         TnyMsg *new_msg = NULL;
 174         gchar *attach_text = NULL;
 175         const gchar *subject;
 176         TnyMimePart *body_part = NULL, *attach_part = NULL;
 177         ModestFormatterPrivate *priv;
 178         TnyPlatformFactory *fact;
 179
 180         fact = modest_runtime_get_platform_factory ();
 181         /* Build new part */
 182         new_msg     = modest_formatter_create_message (self, TRUE, TRUE);
 183         body_part = modest_formatter_create_body_part (self, new_msg);
 184         attach_part = tny_platform_factory_new_mime_part (fact);
 185
 186         /* Create the two parts */
 187         priv = MODEST_FORMATTER_GET_PRIVATE (self);
 188         attach_text = extract_text (self, body);
 189         construct_from_text (body_part, "", priv->content_type);
 190         g_object_unref (body_part);
 191         construct_from_text (attach_part, (const gchar*) attach_text, priv->content_type);
 192         subject = tny_header_get_subject (header);
 193         tny_mime_part_set_filename (attach_part, subject ? subject : _("No subject"));
 194
 195         /* Add parts */
 196         tny_mime_part_add_part (TNY_MIME_PART (new_msg), attach_part);
 197         g_object_unref (attach_part);
 198
 199         /* Clean */
 200         g_free (attach_text);
 201
 202         return new_msg;
 203 }
 204
 205 ModestFormatter*
 206 modest_formatter_new (const gchar *content_type, const gchar *signature)
 207 {
 208         ModestFormatter *formatter;
 209         ModestFormatterPrivate *priv;
 210
 211         formatter = g_object_new (MODEST_TYPE_FORMATTER, NULL);
 212         priv = MODEST_FORMATTER_GET_PRIVATE (formatter);
 213         priv->content_type = g_strdup (content_type);
 214         priv->signature = g_strdup (signature);
 215
 216         return formatter;
 217 }
 218
 219 static void
 220 modest_formatter_instance_init (GTypeInstance *instance, gpointer g_class)
 221 {
 222         ModestFormatter *self = (ModestFormatter *)instance;
 223         ModestFormatterPrivate *priv = MODEST_FORMATTER_GET_PRIVATE (self);
 224
 225         priv->content_type = NULL;
 226 }
 227
 228 static void
 229 modest_formatter_finalize (GObject *object)
 230 {
 231         ModestFormatter *self = (ModestFormatter *)object;
 232         ModestFormatterPrivate *priv = MODEST_FORMATTER_GET_PRIVATE (self);
 233
 234         if (priv->content_type)
 235                 g_free (priv->content_type);
 236
 237         if (priv->signature)
 238                 g_free (priv->signature);
 239
 240         (*parent_class->finalize) (object);
 241 }
 242
 243 static void
 244 modest_formatter_class_init (ModestFormatterClass *class)
 245 {
 246         GObjectClass *object_class;
 247
 248         parent_class = g_type_class_peek_parent (class);
 249         object_class = (GObjectClass*) class;
 250         object_class->finalize = modest_formatter_finalize;
 251
 252         g_type_class_add_private (object_class, sizeof (ModestFormatterPrivate));
 253 }
 254
 255 GType
 256 modest_formatter_get_type (void)
 257 {
 258         static GType type = 0;
 259
 260         if (G_UNLIKELY(type == 0))
 261         {
 262                 static const GTypeInfo info =
 263                 {
 264                   sizeof (ModestFormatterClass),
 265                   NULL,   /* base_init */
 266                   NULL,   /* base_finalize */
 267                   (GClassInitFunc) modest_formatter_class_init,   /* class_init */
 268                   NULL,   /* class_finalize */
 269                   NULL,   /* class_data */
 270                   sizeof (ModestFormatter),
 271                   0,      /* n_preallocs */
 272                   modest_formatter_instance_init    /* instance_init */
 273                 };
 274
 275                 type = g_type_register_static (G_TYPE_OBJECT,
 276                         "ModestFormatter",
 277                         &info, 0);
 278         }
 279
 280         return type;
 281 }
 282
 283 /****************/
 284 static gchar *
 285 modest_formatter_wrapper_cite (ModestFormatter *self, const gchar *text, TnyHeader *header, GList *attachments)
 286 {
 287         ModestFormatterPrivate *priv = MODEST_FORMATTER_GET_PRIVATE (self);
 288
 289         return modest_text_utils_cite (text,
 290                                        priv->content_type,
 291                                        priv->signature,
 292                                        tny_header_get_from (header),
 293                                        tny_header_get_date_sent (header));
 294 }
 295
 296 static gchar *
 297 modest_formatter_wrapper_inline (ModestFormatter *self, const gchar *text, TnyHeader *header, GList *attachments)
 298 {
 299         ModestFormatterPrivate *priv = MODEST_FORMATTER_GET_PRIVATE (self);
 300
 301         return modest_text_utils_inline (text,
 302                                          priv->content_type,
 303                                          priv->signature,
 304                                          tny_header_get_from (header),
 305                                          tny_header_get_date_sent (header),
 306                                          tny_header_get_to (header),
 307                                          tny_header_get_subject (header));
 308 }
 309
 310 static gchar *
 311 modest_formatter_wrapper_quote (ModestFormatter *self, const gchar *text, TnyHeader *header, GList *attachments)
 312 {
 313         ModestFormatterPrivate *priv = MODEST_FORMATTER_GET_PRIVATE (self);
 314         GList *filenames = NULL;
 315         GList *node = NULL;
 316         gchar *result = NULL;
 317
 318         /* First we need a GList of attachments filenames */
 319         for (node = attachments; node != NULL; node = g_list_next (node)) {
 320                 TnyMimePart *part = (TnyMimePart *) node->data;
 321                 gchar *filename = NULL;
 322                 if (TNY_IS_MSG (part)) {
 323                         TnyHeader *header = tny_msg_get_header (TNY_MSG (part));
 324                         filename = g_strdup (tny_header_get_subject (header));
 325                         if ((filename == NULL)||(filename[0] == '\0')) {
 326                                 g_free (filename);
 327                                 filename = g_strdup (_("mail_va_no_subject"));
 328                         }
 329                         g_object_unref (header);
 330                 } else {
 331                         filename = g_strdup (tny_mime_part_get_filename (part));
 332                         if ((filename == NULL)||(filename[0] == '\0'))
 333                                 filename = g_strdup ("");
 334                 }
 335                 filenames = g_list_append (filenames, filename);
 336         }
 337         filenames = g_list_reverse (filenames);
 338
 339         /* TODO: get 80 from the configuration */
 340         result = modest_text_utils_quote (text,
 341                                           priv->content_type,
 342                                           priv->signature,
 343                                           tny_header_get_from (header),
 344                                           tny_header_get_date_sent (header),
 345                                           filenames,
 346                                           80);
 347
 348         g_list_foreach (filenames, (GFunc) g_free, NULL);
 349         g_list_free (filenames);
 350         return result;
 351 }
 352
 353 TnyMsg *
 354 modest_formatter_create_message (ModestFormatter *self, gboolean single_body, gboolean has_attachments)
 355 {
 356         TnyMsg *result = NULL;
 357         TnyPlatformFactory *fact = NULL;
 358         TnyMimePart *body_mime_part = NULL;
 359         fact    = modest_runtime_get_platform_factory ();
 360         result = tny_platform_factory_new_msg (fact);
 361         if (has_attachments) {
 362                 tny_mime_part_set_content_type (TNY_MIME_PART (result), "multipart/mixed");
 363                 if (!single_body) {
 364                         body_mime_part = tny_platform_factory_new_mime_part (fact);
 365                         tny_mime_part_set_content_type (body_mime_part, "multipart/alternative");
 366                         tny_mime_part_add_part (TNY_MIME_PART (result), body_mime_part);
 367                         g_object_unref (body_mime_part);
 368                 }
 369         } else if (!single_body) {
 370                 tny_mime_part_set_content_type (TNY_MIME_PART (result), "multipart/alternative");
 371         }
 372
 373         return result;
 374 }
 375
 376 TnyMimePart *
 377 modest_formatter_create_body_part (ModestFormatter *self, TnyMsg *msg)
 378 {
 379         TnyMimePart *result = NULL;
 380         const gchar *msg_content_type = NULL;
 381         TnyPlatformFactory *fact = NULL;
 382
 383         fact = modest_runtime_get_platform_factory ();
 384         msg_content_type = tny_mime_part_get_content_type (TNY_MIME_PART (msg));
 385         /* First it checks if the main part is alternative */
 386         if ((msg_content_type != NULL) &&
 387             (!g_strcasecmp (msg_content_type, "multipart/alternative"))) {
 388                 result = tny_platform_factory_new_mime_part (fact);
 389                 tny_mime_part_add_part (TNY_MIME_PART (msg), result);
 390                 return result;
 391         } else if ((msg_content_type != NULL) &&
 392                    (!g_strcasecmp (msg_content_type, "multipart/mixed"))) {
 393                 TnyList *parts = NULL;
 394                 TnyIterator *iter = NULL;
 395                 TnyMimePart *alternative_part = NULL;
 396
 397                 parts = TNY_LIST (tny_simple_list_new ());
 398                 tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
 399                 iter = tny_list_create_iterator (parts);
 400                 while (!tny_iterator_is_done (iter)) {
 401                         TnyMimePart *part = TNY_MIME_PART (tny_iterator_get_current (iter));
 402                         if (!g_strcasecmp(tny_mime_part_get_content_type (part), "multipart/alternative")) {
 403                                 alternative_part = part;
 404                                 break;
 405                         }
 406                         tny_iterator_next (iter);
 407                 }
 408                 result = tny_platform_factory_new_mime_part (fact);
 409                 if (alternative_part != NULL) {
 410                         tny_mime_part_add_part (alternative_part, result);
 411                 } else {
 412                         tny_mime_part_add_part (TNY_MIME_PART (msg), result);
 413                 }
 414                 g_object_unref (G_OBJECT (parts));
 415                 return result;
 416         } else {
 417                 /* We add a reference as this method is intended to obtain
 418                    a ref'ed part */
 419                 g_object_ref (msg);
 420                 return TNY_MIME_PART (msg);
 421         }
 422 }