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-mem-stream.h>
  36 #include "modest-formatter.h"
  37 #include "modest-text-utils.h"
  38 #include "modest-tny-platform-factory.h"
  39 #include <modest-runtime.h>
  40
  41 typedef struct _ModestFormatterPrivate ModestFormatterPrivate;
  42 struct _ModestFormatterPrivate {
  43         gchar *content_type;
  44         gchar *signature;
  45 };
  46 #define MODEST_FORMATTER_GET_PRIVATE(o)  (G_TYPE_INSTANCE_GET_PRIVATE((o), \
  47                                           MODEST_TYPE_FORMATTER, \
  48                                           ModestFormatterPrivate))
  49
  50 static GObjectClass *parent_class = NULL;
  51
  52 typedef gchar* FormatterFunc (ModestFormatter *self, const gchar *text, TnyHeader *header, GList *attachments);
  53
  54 static TnyMsg *modest_formatter_do (ModestFormatter *self, TnyMimePart *body,  TnyHeader *header,
  55                                     FormatterFunc func, GList *attachments);
  56
  57 static gchar*  modest_formatter_wrapper_cite   (ModestFormatter *self, const gchar *text,
  58                                                 TnyHeader *header, GList *attachments);
  59 static gchar*  modest_formatter_wrapper_quote  (ModestFormatter *self, const gchar *text,
  60                                                 TnyHeader *header, GList *attachments);
  61 static gchar*  modest_formatter_wrapper_inline (ModestFormatter *self, const gchar *text,
  62                                                 TnyHeader *header, GList *attachments);
  63
  64 static TnyMimePart *find_body_parent (TnyMimePart *part);
  65
  66 static gchar *
  67 extract_text (ModestFormatter *self, TnyMimePart *body)
  68 {
  69         TnyStream *stream;
  70         GtkTextBuffer *buf;
  71         GtkTextIter start, end;
  72         gchar *text, *converted_text;
  73         ModestFormatterPrivate *priv;
  74
  75         buf = gtk_text_buffer_new (NULL);
  76         stream = TNY_STREAM (tny_gtk_text_buffer_stream_new (buf));
  77         tny_stream_reset (stream);
  78         tny_mime_part_decode_to_stream (body, stream, NULL);
  79         tny_stream_reset (stream);
  80
  81         g_object_unref (G_OBJECT(stream));
  82
  83         gtk_text_buffer_get_bounds (buf, &start, &end);
  84         text = gtk_text_buffer_get_text (buf, &start, &end, FALSE);
  85         g_object_unref (G_OBJECT(buf));
  86
  87         /* Convert to desired content type if needed */
  88         priv = MODEST_FORMATTER_GET_PRIVATE (self);
  89
  90         if (strcmp (tny_mime_part_get_content_type (body), priv->content_type) == 0) {
  91                 if (!strcmp (priv->content_type, "text/html"))
  92                         converted_text = modest_text_utils_convert_to_html  (text);
  93                 else
  94                         converted_text = g_strdup (text);
  95
  96                 g_free (text);
  97                 text = converted_text;
  98         }
  99         return text;
 100 }
 101
 102 static void
 103 construct_from_text (TnyMimePart *part,
 104                      const gchar *text,
 105                      const gchar *content_type)
 106 {
 107         TnyStream *text_body_stream;
 108
 109         /* Create the stream */
 110         text_body_stream = TNY_STREAM (tny_camel_mem_stream_new_with_buffer
 111                                         (text, strlen(text)));
 112
 113         /* Construct MIME part */
 114         tny_stream_reset (text_body_stream);
 115         tny_mime_part_construct (part, text_body_stream, content_type, "7bit");
 116         tny_stream_reset (text_body_stream);
 117
 118         /* Clean */
 119         g_object_unref (G_OBJECT (text_body_stream));
 120 }
 121
 122 static TnyMsg *
 123 modest_formatter_do (ModestFormatter *self, TnyMimePart *body, TnyHeader *header, FormatterFunc func,
 124                      GList *attachments)
 125 {
 126         TnyMsg *new_msg = NULL;
 127         gchar *body_text = NULL, *txt = NULL;
 128         ModestFormatterPrivate *priv;
 129         TnyMimePart *body_part = NULL;
 130
 131         g_return_val_if_fail (self, NULL);
 132         g_return_val_if_fail (header, NULL);
 133         g_return_val_if_fail (func, NULL);
 134
 135         /* Build new part */
 136         new_msg = modest_formatter_create_message (self, TRUE, attachments != NULL, FALSE);
 137         body_part = modest_formatter_create_body_part (self, new_msg);
 138
 139         if (body)
 140                 body_text = extract_text (self, body);
 141         else
 142                 body_text = g_strdup ("");
 143
 144         txt = (gchar *) func (self, (const gchar*) body_text, header, attachments);
 145         priv = MODEST_FORMATTER_GET_PRIVATE (self);
 146         construct_from_text (TNY_MIME_PART (body_part), (const gchar*) txt, priv->content_type);
 147         g_object_unref (body_part);
 148
 149         /* Clean */
 150         g_free (body_text);
 151         g_free (txt);
 152
 153         return new_msg;
 154 }
 155
 156 TnyMsg *
 157 modest_formatter_cite (ModestFormatter *self, TnyMimePart *body, TnyHeader *header)
 158 {
 159         return modest_formatter_do (self, body, header, modest_formatter_wrapper_cite, NULL);
 160 }
 161
 162 TnyMsg *
 163 modest_formatter_quote (ModestFormatter *self, TnyMimePart *body, TnyHeader *header, GList *attachments)
 164 {
 165         return modest_formatter_do (self, body, header, modest_formatter_wrapper_quote, attachments);
 166 }
 167
 168 TnyMsg *
 169 modest_formatter_inline (ModestFormatter *self, TnyMimePart *body, TnyHeader *header, GList *attachments)
 170 {
 171         return modest_formatter_do (self, body, header, modest_formatter_wrapper_inline, attachments);
 172 }
 173
 174 TnyMsg *
 175 modest_formatter_attach (ModestFormatter *self, TnyMsg *msg, TnyHeader *header)
 176 {
 177         TnyMsg *new_msg = NULL;
 178         TnyMimePart *body_part = NULL;
 179         ModestFormatterPrivate *priv;
 180
 181         /* Build new part */
 182         new_msg     = modest_formatter_create_message (self, TRUE, TRUE, FALSE);
 183         body_part = modest_formatter_create_body_part (self, new_msg);
 184
 185         /* Create the two parts */
 186         priv = MODEST_FORMATTER_GET_PRIVATE (self);
 187         construct_from_text (body_part, "", priv->content_type);
 188         g_object_unref (body_part);
 189
 190         if (msg) {
 191                 /* Add parts */
 192                 tny_mime_part_add_part (TNY_MIME_PART (new_msg), TNY_MIME_PART (msg));
 193         }
 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         gchar *result, *from;
 282         ModestFormatterPrivate *priv = MODEST_FORMATTER_GET_PRIVATE (self);
 283
 284         from = tny_header_dup_from (header);
 285         result = modest_text_utils_cite (text,
 286                                          priv->content_type,
 287                                          priv->signature,
 288                                          from,
 289                                          tny_header_get_date_sent (header));
 290         g_free (from);
 291         return result;
 292 }
 293
 294 static gchar *
 295 modest_formatter_wrapper_inline (ModestFormatter *self, const gchar *text, TnyHeader *header,
 296                                  GList *attachments)
 297 {
 298         gchar *result, *from, *to, *subject;
 299         ModestFormatterPrivate *priv = MODEST_FORMATTER_GET_PRIVATE (self);
 300
 301         from = tny_header_dup_from (header);
 302         to = tny_header_dup_to (header);
 303         subject = tny_header_dup_subject (header);
 304         result =  modest_text_utils_inline (text,
 305                                             priv->content_type,
 306                                             priv->signature,
 307                                             from,
 308                                             tny_header_get_date_sent (header),
 309                                             to,
 310                                             subject);
 311         g_free (subject);
 312         g_free (to);
 313         g_free (from);
 314         return result;
 315 }
 316
 317 static gchar *
 318 modest_formatter_wrapper_quote (ModestFormatter *self, const gchar *text, TnyHeader *header,
 319                                 GList *attachments)
 320 {
 321         ModestFormatterPrivate *priv = MODEST_FORMATTER_GET_PRIVATE (self);
 322         GList *filenames = NULL;
 323         GList *node = NULL;
 324         gchar *result = NULL;
 325         gchar *from;
 326
 327         /* First we need a GList of attachments filenames */
 328         for (node = attachments; node != NULL; node = g_list_next (node)) {
 329                 TnyMimePart *part = (TnyMimePart *) node->data;
 330                 gchar *filename = NULL;
 331                 if (TNY_IS_MSG (part)) {
 332                         TnyHeader *header = tny_msg_get_header (TNY_MSG (part));
 333                         filename = tny_header_dup_subject (header);
 334                         if ((filename == NULL)||(filename[0] == '\0')) {
 335                                 g_free (filename);
 336                                 filename = g_strdup (_("mail_va_no_subject"));
 337                         }
 338                         g_object_unref (header);
 339                 } else {
 340                         filename = g_strdup (tny_mime_part_get_filename (part));
 341                         if ((filename == NULL)||(filename[0] == '\0'))
 342                                 filename = g_strdup ("");
 343                 }
 344                 filenames = g_list_append (filenames, filename);
 345         }
 346         filenames = g_list_reverse (filenames);
 347
 348         /* TODO: get 80 from the configuration */
 349         from = tny_header_dup_from (header);
 350         result = modest_text_utils_quote (text,
 351                                           priv->content_type,
 352                                           priv->signature,
 353                                           from,
 354                                           tny_header_get_date_sent (header),
 355                                           filenames,
 356                                           80);
 357         g_free (from);
 358
 359         g_list_foreach (filenames, (GFunc) g_free, NULL);
 360         g_list_free (filenames);
 361         return result;
 362 }
 363
 364 TnyMsg *
 365 modest_formatter_create_message (ModestFormatter *self, gboolean single_body,
 366                                  gboolean has_attachments, gboolean has_images)
 367 {
 368         TnyMsg *result = NULL;
 369         TnyPlatformFactory *fact = NULL;
 370         TnyMimePart *body_mime_part = NULL;
 371         TnyMimePart *related_mime_part = NULL;
 372
 373         fact    = modest_runtime_get_platform_factory ();
 374         result = tny_platform_factory_new_msg (fact);
 375         if (has_attachments) {
 376                 tny_mime_part_set_content_type (TNY_MIME_PART (result), "multipart/mixed");
 377                 if (has_images) {
 378                         related_mime_part = tny_platform_factory_new_mime_part (fact);
 379                         tny_mime_part_set_content_type (related_mime_part, "multipart/related");
 380                         tny_mime_part_add_part (TNY_MIME_PART (result), related_mime_part);
 381                 } else {
 382                         related_mime_part = g_object_ref (result);
 383                 }
 384
 385                 if (!single_body) {
 386                         body_mime_part = tny_platform_factory_new_mime_part (fact);
 387                         tny_mime_part_set_content_type (body_mime_part, "multipart/alternative");
 388                         tny_mime_part_add_part (TNY_MIME_PART (related_mime_part), body_mime_part);
 389                         g_object_unref (body_mime_part);
 390                 }
 391
 392                 g_object_unref (related_mime_part);
 393         } else if (has_images) {
 394                 tny_mime_part_set_content_type (TNY_MIME_PART (result), "multipart/related");
 395
 396                 if (!single_body) {
 397                         body_mime_part = tny_platform_factory_new_mime_part (fact);
 398                         tny_mime_part_set_content_type (body_mime_part, "multipart/alternative");
 399                         tny_mime_part_add_part (TNY_MIME_PART (result), body_mime_part);
 400                         g_object_unref (body_mime_part);
 401                 }
 402
 403         } else if (!single_body) {
 404                 tny_mime_part_set_content_type (TNY_MIME_PART (result), "multipart/alternative");
 405         }
 406
 407         return result;
 408 }
 409
 410 TnyMimePart *
 411 find_body_parent (TnyMimePart *part)
 412 {
 413         const gchar *msg_content_type = NULL;
 414         msg_content_type = tny_mime_part_get_content_type (part);
 415
 416         if ((msg_content_type != NULL) &&
 417             (!g_strcasecmp (msg_content_type, "multipart/alternative")))
 418                 return g_object_ref (part);
 419         else if ((msg_content_type != NULL) &&
 420                  (g_str_has_prefix (msg_content_type, "multipart/"))) {
 421                 TnyIterator *iter = NULL;
 422                 TnyMimePart *alternative_part = NULL;
 423                 TnyMimePart *related_part = NULL;
 424                 TnyList *parts = TNY_LIST (tny_simple_list_new ());
 425                 tny_mime_part_get_parts (TNY_MIME_PART (part), parts);
 426                 iter = tny_list_create_iterator (parts);
 427
 428                 while (!tny_iterator_is_done (iter)) {
 429                         TnyMimePart *part = TNY_MIME_PART (tny_iterator_get_current (iter));
 430                         if (part && !g_strcasecmp(tny_mime_part_get_content_type (part), "multipart/alternative")) {
 431                                 alternative_part = part;
 432                                 break;
 433                         } else if (part && !g_strcasecmp (tny_mime_part_get_content_type (part), "multipart/related")) {
 434                                 related_part = part;
 435                                 break;
 436                         }
 437
 438                         if (part)
 439                                 g_object_unref (part);
 440
 441                         tny_iterator_next (iter);
 442                 }
 443                 g_object_unref (iter);
 444                 g_object_unref (parts);
 445                 if (related_part) {
 446                         TnyMimePart *result;
 447                         result = find_body_parent (related_part);
 448                         g_object_unref (related_part);
 449                         return result;
 450                 } else if (alternative_part)
 451                         return alternative_part;
 452                 else
 453                         return g_object_ref (part);
 454         } else
 455                 return NULL;
 456 }
 457
 458 TnyMimePart *
 459 modest_formatter_create_body_part (ModestFormatter *self, TnyMsg *msg)
 460 {
 461         TnyMimePart *result = NULL;
 462         TnyPlatformFactory *fact = NULL;
 463         TnyMimePart *parent = NULL;
 464
 465         parent = find_body_parent (TNY_MIME_PART (msg));
 466         fact = modest_runtime_get_platform_factory ();
 467         if (parent != NULL) {
 468                 result = tny_platform_factory_new_mime_part (fact);
 469                 tny_mime_part_add_part (TNY_MIME_PART (parent), result);
 470                 g_object_unref (parent);
 471         } else {
 472                 result = g_object_ref (msg);
 473         }
 474
 475         return result;
 476
 477 }