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,
  59                                                 TnyHeader *header, GList *attachments);
  60 static gchar*  modest_formatter_wrapper_quote  (ModestFormatter *self, const gchar *text,
  61                                                 TnyHeader *header, GList *attachments);
  62 static gchar*  modest_formatter_wrapper_inline (ModestFormatter *self, const gchar *text,
  63                                                 TnyHeader *header, GList *attachments);
  64
  65 static TnyMimePart *find_body_parent (TnyMimePart *part);
  66
  67 static gchar *
  68 extract_text (ModestFormatter *self, TnyMimePart *body)
  69 {
  70         TnyStream *stream;
  71         GtkTextBuffer *buf;
  72         GtkTextIter start, end;
  73         gchar *text, *converted_text;
  74         ModestFormatterPrivate *priv;
  75
  76         buf = gtk_text_buffer_new (NULL);
  77         stream = TNY_STREAM (tny_gtk_text_buffer_stream_new (buf));
  78         tny_stream_reset (stream);
  79         tny_mime_part_decode_to_stream (body, stream);
  80         tny_stream_reset (stream);
  81
  82         g_object_unref (G_OBJECT(stream));
  83
  84         gtk_text_buffer_get_bounds (buf, &start, &end);
  85         text = gtk_text_buffer_get_text (buf, &start, &end, FALSE);
  86         g_object_unref (G_OBJECT(buf));
  87
  88         /* Convert to desired content type if needed */
  89         priv = MODEST_FORMATTER_GET_PRIVATE (self);
  90
  91         if (strcmp (tny_mime_part_get_content_type (body), priv->content_type) == 0) {
  92                 if (!strcmp (priv->content_type, "text/html"))
  93                         converted_text = modest_text_utils_convert_to_html  (text);
  94                 else
  95                         converted_text = g_strdup (text);
  96
  97                 g_free (text);
  98                 text = converted_text;
  99         }
 100         return text;
 101 }
 102
 103 static void
 104 construct_from_text (TnyMimePart *part,
 105                      const gchar *text,
 106                      const gchar *content_type)
 107 {
 108         TnyStream *text_body_stream;
 109
 110         /* Create the stream */
 111         text_body_stream = TNY_STREAM (tny_camel_stream_new
 112                                        (camel_stream_mem_new_with_buffer
 113                                         (text, strlen(text))));
 114
 115         /* Construct MIME part */
 116         tny_stream_reset (text_body_stream);
 117         tny_mime_part_construct_from_stream (part, text_body_stream, content_type);
 118         tny_stream_reset (text_body_stream);
 119
 120         /* Clean */
 121         g_object_unref (G_OBJECT (text_body_stream));
 122 }
 123
 124 static TnyMsg *
 125 modest_formatter_do (ModestFormatter *self, TnyMimePart *body, TnyHeader *header, FormatterFunc func,
 126                      GList *attachments)
 127 {
 128         TnyMsg *new_msg = NULL;
 129         gchar *body_text = NULL, *txt = NULL;
 130         ModestFormatterPrivate *priv;
 131         TnyMimePart *body_part = NULL;
 132
 133         g_return_val_if_fail (self, NULL);
 134         g_return_val_if_fail (header, NULL);
 135         g_return_val_if_fail (func, NULL);
 136
 137         /* Build new part */
 138         new_msg = modest_formatter_create_message (self, TRUE, attachments != NULL, FALSE);
 139         body_part = modest_formatter_create_body_part (self, new_msg);
 140
 141         if (body)
 142                 body_text = extract_text (self, body);
 143         else
 144                 body_text = g_strdup ("");
 145
 146         txt = (gchar *) func (self, (const gchar*) body_text, header, attachments);
 147         priv = MODEST_FORMATTER_GET_PRIVATE (self);
 148         construct_from_text (TNY_MIME_PART (body_part), (const gchar*) txt, priv->content_type);
 149         g_object_unref (body_part);
 150
 151         /* Clean */
 152         g_free (body_text);
 153         g_free (txt);
 154
 155         return new_msg;
 156 }
 157
 158 TnyMsg *
 159 modest_formatter_cite (ModestFormatter *self, TnyMimePart *body, TnyHeader *header)
 160 {
 161         return modest_formatter_do (self, body, header, modest_formatter_wrapper_cite, NULL);
 162 }
 163
 164 TnyMsg *
 165 modest_formatter_quote (ModestFormatter *self, TnyMimePart *body, TnyHeader *header, GList *attachments)
 166 {
 167         return modest_formatter_do (self, body, header, modest_formatter_wrapper_quote, attachments);
 168 }
 169
 170 TnyMsg *
 171 modest_formatter_inline (ModestFormatter *self, TnyMimePart *body, TnyHeader *header, GList *attachments)
 172 {
 173         return modest_formatter_do (self, body, header, modest_formatter_wrapper_inline, attachments);
 174 }
 175
 176 TnyMsg *
 177 modest_formatter_attach (ModestFormatter *self, TnyMsg *msg, TnyHeader *header)
 178 {
 179         TnyMsg *new_msg = NULL;
 180         TnyMimePart *body_part = NULL;
 181         ModestFormatterPrivate *priv;
 182         TnyPlatformFactory *fact;
 183
 184         fact = modest_runtime_get_platform_factory ();
 185         /* Build new part */
 186         new_msg     = modest_formatter_create_message (self, TRUE, TRUE, FALSE);
 187         body_part = modest_formatter_create_body_part (self, new_msg);
 188
 189         /* Create the two parts */
 190         priv = MODEST_FORMATTER_GET_PRIVATE (self);
 191         construct_from_text (body_part, "", priv->content_type);
 192         g_object_unref (body_part);
 193
 194         /* Add parts */
 195         tny_mime_part_add_part (TNY_MIME_PART (new_msg), TNY_MIME_PART (msg));
 196
 197         return new_msg;
 198 }
 199
 200 ModestFormatter*
 201 modest_formatter_new (const gchar *content_type, const gchar *signature)
 202 {
 203         ModestFormatter *formatter;
 204         ModestFormatterPrivate *priv;
 205
 206         formatter = g_object_new (MODEST_TYPE_FORMATTER, NULL);
 207         priv = MODEST_FORMATTER_GET_PRIVATE (formatter);
 208         priv->content_type = g_strdup (content_type);
 209         priv->signature = g_strdup (signature);
 210
 211         return formatter;
 212 }
 213
 214 static void
 215 modest_formatter_instance_init (GTypeInstance *instance, gpointer g_class)
 216 {
 217         ModestFormatter *self = (ModestFormatter *)instance;
 218         ModestFormatterPrivate *priv = MODEST_FORMATTER_GET_PRIVATE (self);
 219
 220         priv->content_type = NULL;
 221 }
 222
 223 static void
 224 modest_formatter_finalize (GObject *object)
 225 {
 226         ModestFormatter *self = (ModestFormatter *)object;
 227         ModestFormatterPrivate *priv = MODEST_FORMATTER_GET_PRIVATE (self);
 228
 229         if (priv->content_type)
 230                 g_free (priv->content_type);
 231
 232         if (priv->signature)
 233                 g_free (priv->signature);
 234
 235         (*parent_class->finalize) (object);
 236 }
 237
 238 static void
 239 modest_formatter_class_init (ModestFormatterClass *class)
 240 {
 241         GObjectClass *object_class;
 242
 243         parent_class = g_type_class_peek_parent (class);
 244         object_class = (GObjectClass*) class;
 245         object_class->finalize = modest_formatter_finalize;
 246
 247         g_type_class_add_private (object_class, sizeof (ModestFormatterPrivate));
 248 }
 249
 250 GType
 251 modest_formatter_get_type (void)
 252 {
 253         static GType type = 0;
 254
 255         if (G_UNLIKELY(type == 0))
 256         {
 257                 static const GTypeInfo info =
 258                 {
 259                   sizeof (ModestFormatterClass),
 260                   NULL,   /* base_init */
 261                   NULL,   /* base_finalize */
 262                   (GClassInitFunc) modest_formatter_class_init,   /* class_init */
 263                   NULL,   /* class_finalize */
 264                   NULL,   /* class_data */
 265                   sizeof (ModestFormatter),
 266                   0,      /* n_preallocs */
 267                   modest_formatter_instance_init    /* instance_init */
 268                 };
 269
 270                 type = g_type_register_static (G_TYPE_OBJECT,
 271                         "ModestFormatter",
 272                         &info, 0);
 273         }
 274
 275         return type;
 276 }
 277
 278 /****************/
 279 static gchar *
 280 modest_formatter_wrapper_cite (ModestFormatter *self, const gchar *text, TnyHeader *header,
 281                                GList *attachments)
 282 {
 283         ModestFormatterPrivate *priv = MODEST_FORMATTER_GET_PRIVATE (self);
 284
 285         return modest_text_utils_cite (text,
 286                                        priv->content_type,
 287                                        priv->signature,
 288                                        tny_header_get_from (header),
 289                                        tny_header_get_date_sent (header));
 290 }
 291
 292 static gchar *
 293 modest_formatter_wrapper_inline (ModestFormatter *self, const gchar *text, TnyHeader *header,
 294                                  GList *attachments)
 295 {
 296         ModestFormatterPrivate *priv = MODEST_FORMATTER_GET_PRIVATE (self);
 297
 298         return modest_text_utils_inline (text,
 299                                          priv->content_type,
 300                                          priv->signature,
 301                                          tny_header_get_from (header),
 302                                          tny_header_get_date_sent (header),
 303                                          tny_header_get_to (header),
 304                                          tny_header_get_subject (header));
 305 }
 306
 307 static gchar *
 308 modest_formatter_wrapper_quote (ModestFormatter *self, const gchar *text, TnyHeader *header,
 309                                 GList *attachments)
 310 {
 311         ModestFormatterPrivate *priv = MODEST_FORMATTER_GET_PRIVATE (self);
 312         GList *filenames = NULL;
 313         GList *node = NULL;
 314         gchar *result = NULL;
 315
 316         /* First we need a GList of attachments filenames */
 317         for (node = attachments; node != NULL; node = g_list_next (node)) {
 318                 TnyMimePart *part = (TnyMimePart *) node->data;
 319                 gchar *filename = NULL;
 320                 if (TNY_IS_MSG (part)) {
 321                         TnyHeader *header = tny_msg_get_header (TNY_MSG (part));
 322                         filename = g_strdup (tny_header_get_subject (header));
 323                         if ((filename == NULL)||(filename[0] == '\0')) {
 324                                 g_free (filename);
 325                                 filename = g_strdup (_("mail_va_no_subject"));
 326                         }
 327                         g_object_unref (header);
 328                 } else {
 329                         filename = g_strdup (tny_mime_part_get_filename (part));
 330                         if ((filename == NULL)||(filename[0] == '\0'))
 331                                 filename = g_strdup ("");
 332                 }
 333                 filenames = g_list_append (filenames, filename);
 334         }
 335         filenames = g_list_reverse (filenames);
 336
 337         /* TODO: get 80 from the configuration */
 338         result = modest_text_utils_quote (text,
 339                                           priv->content_type,
 340                                           priv->signature,
 341                                           tny_header_get_from (header),
 342                                           tny_header_get_date_sent (header),
 343                                           filenames,
 344                                           80);
 345
 346         g_list_foreach (filenames, (GFunc) g_free, NULL);
 347         g_list_free (filenames);
 348         return result;
 349 }
 350
 351 TnyMsg *
 352 modest_formatter_create_message (ModestFormatter *self, gboolean single_body,
 353                                  gboolean has_attachments, gboolean has_images)
 354 {
 355         TnyMsg *result = NULL;
 356         TnyPlatformFactory *fact = NULL;
 357         TnyMimePart *body_mime_part = NULL;
 358         TnyMimePart *related_mime_part = NULL;
 359
 360         fact    = modest_runtime_get_platform_factory ();
 361         result = tny_platform_factory_new_msg (fact);
 362         if (has_attachments) {
 363                 tny_mime_part_set_content_type (TNY_MIME_PART (result), "multipart/mixed");
 364                 if (has_images) {
 365                         related_mime_part = tny_platform_factory_new_mime_part (fact);
 366                         tny_mime_part_set_content_type (related_mime_part, "multipart/related");
 367                         tny_mime_part_add_part (TNY_MIME_PART (result), related_mime_part);
 368                 } else {
 369                         related_mime_part = g_object_ref (result);
 370                 }
 371
 372                 if (!single_body) {
 373                         body_mime_part = tny_platform_factory_new_mime_part (fact);
 374                         tny_mime_part_set_content_type (body_mime_part, "multipart/alternative");
 375                         tny_mime_part_add_part (TNY_MIME_PART (related_mime_part), body_mime_part);
 376                         g_object_unref (body_mime_part);
 377                 }
 378
 379                 g_object_unref (related_mime_part);
 380         } else if (has_images) {
 381                 tny_mime_part_set_content_type (TNY_MIME_PART (result), "multipart/related");
 382
 383                 if (!single_body) {
 384                         body_mime_part = tny_platform_factory_new_mime_part (fact);
 385                         tny_mime_part_set_content_type (body_mime_part, "multipart/alternative");
 386                         tny_mime_part_add_part (TNY_MIME_PART (result), body_mime_part);
 387                         g_object_unref (body_mime_part);
 388                 }
 389
 390         } else if (!single_body) {
 391                 tny_mime_part_set_content_type (TNY_MIME_PART (result), "multipart/alternative");
 392         }
 393
 394         return result;
 395 }
 396
 397 TnyMimePart *
 398 find_body_parent (TnyMimePart *part)
 399 {
 400         const gchar *msg_content_type = NULL;
 401         msg_content_type = tny_mime_part_get_content_type (part);
 402
 403         if ((msg_content_type != NULL) &&
 404             (!g_strcasecmp (msg_content_type, "multipart/alternative")))
 405                 return g_object_ref (part);
 406         else if ((msg_content_type != NULL) &&
 407                  (g_str_has_prefix (msg_content_type, "multipart/"))) {
 408                 TnyIterator *iter = NULL;
 409                 TnyMimePart *alternative_part = NULL;
 410                 TnyMimePart *related_part = NULL;
 411                 TnyList *parts = TNY_LIST (tny_simple_list_new ());
 412                 tny_mime_part_get_parts (TNY_MIME_PART (part), parts);
 413                 iter = tny_list_create_iterator (parts);
 414
 415                 while (!tny_iterator_is_done (iter)) {
 416                         TnyMimePart *part = TNY_MIME_PART (tny_iterator_get_current (iter));
 417                         if (part && !g_strcasecmp(tny_mime_part_get_content_type (part), "multipart/alternative")) {
 418                                 alternative_part = part;
 419                                 break;
 420                         } else if (part && !g_strcasecmp (tny_mime_part_get_content_type (part), "multipart/related")) {
 421                                 related_part = part;
 422                                 break;
 423                         }
 424
 425                         if (part)
 426                                 g_object_unref (part);
 427
 428                         tny_iterator_next (iter);
 429                 }
 430                 g_object_unref (iter);
 431                 g_object_unref (parts);
 432                 if (related_part) {
 433                         TnyMimePart *result;
 434                         result = find_body_parent (related_part);
 435                         g_object_unref (related_part);
 436                         return result;
 437                 } else if (alternative_part)
 438                         return alternative_part;
 439                 else
 440                         return g_object_ref (part);
 441         } else
 442                 return NULL;
 443 }
 444
 445 TnyMimePart *
 446 modest_formatter_create_body_part (ModestFormatter *self, TnyMsg *msg)
 447 {
 448         TnyMimePart *result = NULL;
 449         TnyPlatformFactory *fact = NULL;
 450         TnyMimePart *parent = NULL;
 451
 452         parent = find_body_parent (TNY_MIME_PART (msg));
 453         fact = modest_runtime_get_platform_factory ();
 454         if (parent != NULL) {
 455                 result = tny_platform_factory_new_mime_part (fact);
 456                 tny_mime_part_add_part (TNY_MIME_PART (parent), result);
 457                 g_object_unref (parent);
 458         } else {
 459                 result = g_object_ref (msg);
 460         }
 461
 462         return result;
 463
 464 }