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, NULL);
  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 (part, text_body_stream, content_type, "7bit");
 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
 183         /* Build new part */
 184         new_msg     = modest_formatter_create_message (self, TRUE, TRUE, FALSE);
 185         body_part = modest_formatter_create_body_part (self, new_msg);
 186
 187         /* Create the two parts */
 188         priv = MODEST_FORMATTER_GET_PRIVATE (self);
 189         construct_from_text (body_part, "", priv->content_type);
 190         g_object_unref (body_part);
 191
 192         /* Add parts */
 193         tny_mime_part_add_part (TNY_MIME_PART (new_msg), TNY_MIME_PART (msg));
 194
 195         return new_msg;
 196 }
 197
 198 ModestFormatter*
 199 modest_formatter_new (const gchar *content_type, const gchar *signature)
 200 {
 201         ModestFormatter *formatter;
 202         ModestFormatterPrivate *priv;
 203
 204         formatter = g_object_new (MODEST_TYPE_FORMATTER, NULL);
 205         priv = MODEST_FORMATTER_GET_PRIVATE (formatter);
 206         priv->content_type = g_strdup (content_type);
 207         priv->signature = g_strdup (signature);
 208
 209         return formatter;
 210 }
 211
 212 static void
 213 modest_formatter_instance_init (GTypeInstance *instance, gpointer g_class)
 214 {
 215         ModestFormatter *self = (ModestFormatter *)instance;
 216         ModestFormatterPrivate *priv = MODEST_FORMATTER_GET_PRIVATE (self);
 217
 218         priv->content_type = NULL;
 219 }
 220
 221 static void
 222 modest_formatter_finalize (GObject *object)
 223 {
 224         ModestFormatter *self = (ModestFormatter *)object;
 225         ModestFormatterPrivate *priv = MODEST_FORMATTER_GET_PRIVATE (self);
 226
 227         if (priv->content_type)
 228                 g_free (priv->content_type);
 229
 230         if (priv->signature)
 231                 g_free (priv->signature);
 232
 233         (*parent_class->finalize) (object);
 234 }
 235
 236 static void
 237 modest_formatter_class_init (ModestFormatterClass *class)
 238 {
 239         GObjectClass *object_class;
 240
 241         parent_class = g_type_class_peek_parent (class);
 242         object_class = (GObjectClass*) class;
 243         object_class->finalize = modest_formatter_finalize;
 244
 245         g_type_class_add_private (object_class, sizeof (ModestFormatterPrivate));
 246 }
 247
 248 GType
 249 modest_formatter_get_type (void)
 250 {
 251         static GType type = 0;
 252
 253         if (G_UNLIKELY(type == 0))
 254         {
 255                 static const GTypeInfo info =
 256                 {
 257                   sizeof (ModestFormatterClass),
 258                   NULL,   /* base_init */
 259                   NULL,   /* base_finalize */
 260                   (GClassInitFunc) modest_formatter_class_init,   /* class_init */
 261                   NULL,   /* class_finalize */
 262                   NULL,   /* class_data */
 263                   sizeof (ModestFormatter),
 264                   0,      /* n_preallocs */
 265                   modest_formatter_instance_init    /* instance_init */
 266                 };
 267
 268                 type = g_type_register_static (G_TYPE_OBJECT,
 269                         "ModestFormatter",
 270                         &info, 0);
 271         }
 272
 273         return type;
 274 }
 275
 276 /****************/
 277 static gchar *
 278 modest_formatter_wrapper_cite (ModestFormatter *self, const gchar *text, TnyHeader *header,
 279                                GList *attachments)
 280 {
 281         ModestFormatterPrivate *priv = MODEST_FORMATTER_GET_PRIVATE (self);
 282
 283         return modest_text_utils_cite (text,
 284                                        priv->content_type,
 285                                        priv->signature,
 286                                        tny_header_get_from (header),
 287                                        tny_header_get_date_sent (header));
 288 }
 289
 290 static gchar *
 291 modest_formatter_wrapper_inline (ModestFormatter *self, const gchar *text, TnyHeader *header,
 292                                  GList *attachments)
 293 {
 294         ModestFormatterPrivate *priv = MODEST_FORMATTER_GET_PRIVATE (self);
 295
 296         return modest_text_utils_inline (text,
 297                                          priv->content_type,
 298                                          priv->signature,
 299                                          tny_header_get_from (header),
 300                                          tny_header_get_date_sent (header),
 301                                          tny_header_get_to (header),
 302                                          tny_header_get_subject (header));
 303 }
 304
 305 static gchar *
 306 modest_formatter_wrapper_quote (ModestFormatter *self, const gchar *text, TnyHeader *header,
 307                                 GList *attachments)
 308 {
 309         ModestFormatterPrivate *priv = MODEST_FORMATTER_GET_PRIVATE (self);
 310         GList *filenames = NULL;
 311         GList *node = NULL;
 312         gchar *result = NULL;
 313
 314         /* First we need a GList of attachments filenames */
 315         for (node = attachments; node != NULL; node = g_list_next (node)) {
 316                 TnyMimePart *part = (TnyMimePart *) node->data;
 317                 gchar *filename = NULL;
 318                 if (TNY_IS_MSG (part)) {
 319                         TnyHeader *header = tny_msg_get_header (TNY_MSG (part));
 320                         filename = g_strdup (tny_header_get_subject (header));
 321                         if ((filename == NULL)||(filename[0] == '\0')) {
 322                                 g_free (filename);
 323                                 filename = g_strdup (_("mail_va_no_subject"));
 324                         }
 325                         g_object_unref (header);
 326                 } else {
 327                         filename = g_strdup (tny_mime_part_get_filename (part));
 328                         if ((filename == NULL)||(filename[0] == '\0'))
 329                                 filename = g_strdup ("");
 330                 }
 331                 filenames = g_list_append (filenames, filename);
 332         }
 333         filenames = g_list_reverse (filenames);
 334
 335         /* TODO: get 80 from the configuration */
 336         result = modest_text_utils_quote (text,
 337                                           priv->content_type,
 338                                           priv->signature,
 339                                           tny_header_get_from (header),
 340                                           tny_header_get_date_sent (header),
 341                                           filenames,
 342                                           80);
 343
 344         g_list_foreach (filenames, (GFunc) g_free, NULL);
 345         g_list_free (filenames);
 346         return result;
 347 }
 348
 349 TnyMsg *
 350 modest_formatter_create_message (ModestFormatter *self, gboolean single_body,
 351                                  gboolean has_attachments, gboolean has_images)
 352 {
 353         TnyMsg *result = NULL;
 354         TnyPlatformFactory *fact = NULL;
 355         TnyMimePart *body_mime_part = NULL;
 356         TnyMimePart *related_mime_part = NULL;
 357
 358         fact    = modest_runtime_get_platform_factory ();
 359         result = tny_platform_factory_new_msg (fact);
 360         if (has_attachments) {
 361                 tny_mime_part_set_content_type (TNY_MIME_PART (result), "multipart/mixed");
 362                 if (has_images) {
 363                         related_mime_part = tny_platform_factory_new_mime_part (fact);
 364                         tny_mime_part_set_content_type (related_mime_part, "multipart/related");
 365                         tny_mime_part_add_part (TNY_MIME_PART (result), related_mime_part);
 366                 } else {
 367                         related_mime_part = g_object_ref (result);
 368                 }
 369
 370                 if (!single_body) {
 371                         body_mime_part = tny_platform_factory_new_mime_part (fact);
 372                         tny_mime_part_set_content_type (body_mime_part, "multipart/alternative");
 373                         tny_mime_part_add_part (TNY_MIME_PART (related_mime_part), body_mime_part);
 374                         g_object_unref (body_mime_part);
 375                 }
 376
 377                 g_object_unref (related_mime_part);
 378         } else if (has_images) {
 379                 tny_mime_part_set_content_type (TNY_MIME_PART (result), "multipart/related");
 380
 381                 if (!single_body) {
 382                         body_mime_part = tny_platform_factory_new_mime_part (fact);
 383                         tny_mime_part_set_content_type (body_mime_part, "multipart/alternative");
 384                         tny_mime_part_add_part (TNY_MIME_PART (result), body_mime_part);
 385                         g_object_unref (body_mime_part);
 386                 }
 387
 388         } else if (!single_body) {
 389                 tny_mime_part_set_content_type (TNY_MIME_PART (result), "multipart/alternative");
 390         }
 391
 392         return result;
 393 }
 394
 395 TnyMimePart *
 396 find_body_parent (TnyMimePart *part)
 397 {
 398         const gchar *msg_content_type = NULL;
 399         msg_content_type = tny_mime_part_get_content_type (part);
 400
 401         if ((msg_content_type != NULL) &&
 402             (!g_strcasecmp (msg_content_type, "multipart/alternative")))
 403                 return g_object_ref (part);
 404         else if ((msg_content_type != NULL) &&
 405                  (g_str_has_prefix (msg_content_type, "multipart/"))) {
 406                 TnyIterator *iter = NULL;
 407                 TnyMimePart *alternative_part = NULL;
 408                 TnyMimePart *related_part = NULL;
 409                 TnyList *parts = TNY_LIST (tny_simple_list_new ());
 410                 tny_mime_part_get_parts (TNY_MIME_PART (part), parts);
 411                 iter = tny_list_create_iterator (parts);
 412
 413                 while (!tny_iterator_is_done (iter)) {
 414                         TnyMimePart *part = TNY_MIME_PART (tny_iterator_get_current (iter));
 415                         if (part && !g_strcasecmp(tny_mime_part_get_content_type (part), "multipart/alternative")) {
 416                                 alternative_part = part;
 417                                 break;
 418                         } else if (part && !g_strcasecmp (tny_mime_part_get_content_type (part), "multipart/related")) {
 419                                 related_part = part;
 420                                 break;
 421                         }
 422
 423                         if (part)
 424                                 g_object_unref (part);
 425
 426                         tny_iterator_next (iter);
 427                 }
 428                 g_object_unref (iter);
 429                 g_object_unref (parts);
 430                 if (related_part) {
 431                         TnyMimePart *result;
 432                         result = find_body_parent (related_part);
 433                         g_object_unref (related_part);
 434                         return result;
 435                 } else if (alternative_part)
 436                         return alternative_part;
 437                 else
 438                         return g_object_ref (part);
 439         } else
 440                 return NULL;
 441 }
 442
 443 TnyMimePart *
 444 modest_formatter_create_body_part (ModestFormatter *self, TnyMsg *msg)
 445 {
 446         TnyMimePart *result = NULL;
 447         TnyPlatformFactory *fact = NULL;
 448         TnyMimePart *parent = NULL;
 449
 450         parent = find_body_parent (TNY_MIME_PART (msg));
 451         fact = modest_runtime_get_platform_factory ();
 452         if (parent != NULL) {
 453                 result = tny_platform_factory_new_mime_part (fact);
 454                 tny_mime_part_add_part (TNY_MIME_PART (parent), result);
 455                 g_object_unref (parent);
 456         } else {
 457                 result = g_object_ref (msg);
 458         }
 459
 460         return result;
 461
 462 }