src/textview.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2002 Hiroyuki Yamamoto
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include "defs.h"
  25
  26 #include <glib.h>
  27 #include <gdk/gdk.h>
  28 #include <gdk/gdkkeysyms.h>
  29 #include <gtk/gtkvbox.h>
  30 #include <gtk/gtkscrolledwindow.h>
  31 #include <gtk/gtksignal.h>
  32 #include <stdio.h>
  33 #include <ctype.h>
  34 #include <string.h>
  35 #include <stdlib.h>
  36
  37 #include "intl.h"
  38 #include "main.h"
  39 #include "summaryview.h"
  40 #include "procheader.h"
  41 #include "prefs_common.h"
  42 #include "codeconv.h"
  43 #include "gtkstext.h"
  44 #include "utils.h"
  45 #include "gtkutils.h"
  46 #include "procmime.h"
  47 #include "html.h"
  48 #include "enriched.h"
  49 #include "compose.h"
  50 #include "addressbook.h"
  51 #include "displayheader.h"
  52 #include "account.h"
  53
  54 #define FONT_LOAD(font, s) \
  55 { \
  56         gchar *fontstr, *p; \
  57  \
  58         Xstrdup_a(fontstr, s, ); \
  59         if ((p = strchr(fontstr, ',')) != NULL) *p = '\0'; \
  60         font = gdk_font_load(fontstr); \
  61         if (!font) \
  62                 g_warning("Couldn't load the font '%s'\n", fontstr); \
  63 }
  64
  65 typedef struct _RemoteURI       RemoteURI;
  66
  67 struct _RemoteURI
  68 {
  69         gchar *uri;
  70
  71         guint start;
  72         guint end;
  73 };
  74
  75 static GdkColor quote_colors[3] = {
  76         {(gulong)0, (gushort)0, (gushort)0, (gushort)0},
  77         {(gulong)0, (gushort)0, (gushort)0, (gushort)0},
  78         {(gulong)0, (gushort)0, (gushort)0, (gushort)0}
  79 };
  80
  81 static GdkColor uri_color = {
  82         (gulong)0,
  83         (gushort)0,
  84         (gushort)0,
  85         (gushort)0
  86 };
  87
  88 static GdkColor emphasis_color = {
  89         (gulong)0,
  90         (gushort)0,
  91         (gushort)0,
  92         (gushort)0xcfff
  93 };
  94
  95 #if 0
  96 static GdkColor error_color = {
  97         (gulong)0,
  98         (gushort)0xefff,
  99         (gushort)0,
 100         (gushort)0
 101 };
 102 #endif
 103
 104 static GdkFont *text_sb_font;
 105 static GdkFont *text_mb_font;
 106 static gint text_sb_font_orig_ascent;
 107 static gint text_sb_font_orig_descent;
 108 static gint text_mb_font_orig_ascent;
 109 static gint text_mb_font_orig_descent;
 110 static GdkFont *spacingfont;
 111
 112 static void textview_show_ertf          (TextView       *textview,
 113                                          FILE           *fp,
 114                                          CodeConverter  *conv);
 115 static void textview_add_part           (TextView       *textview,
 116                                          MimeInfo       *mimeinfo,
 117                                          FILE           *fp);
 118 static void textview_add_parts          (TextView       *textview,
 119                                          MimeInfo       *mimeinfo,
 120                                          FILE           *fp);
 121 static void textview_write_body         (TextView       *textview,
 122                                          MimeInfo       *mimeinfo,
 123                                          FILE           *fp,
 124                                          const gchar    *charset);
 125 static void textview_show_html          (TextView       *textview,
 126                                          FILE           *fp,
 127                                          CodeConverter  *conv);
 128 static void textview_write_line         (TextView       *textview,
 129                                          const gchar    *str,
 130                                          CodeConverter  *conv);
 131 static void textview_write_link         (TextView       *textview,
 132                                          const gchar    *url,
 133                                          const gchar    *str,
 134                                          CodeConverter  *conv);
 135 static GPtrArray *textview_scan_header  (TextView       *textview,
 136                                          FILE           *fp);
 137 static void textview_show_header        (TextView       *textview,
 138                                          GPtrArray      *headers);
 139
 140 static gint textview_key_pressed        (GtkWidget      *widget,
 141                                          GdkEventKey    *event,
 142                                          TextView       *textview);
 143 static gint textview_button_pressed     (GtkWidget      *widget,
 144                                          GdkEventButton *event,
 145                                          TextView       *textview);
 146 static gint textview_button_released    (GtkWidget      *widget,
 147                                          GdkEventButton *event,
 148                                          TextView       *textview);
 149
 150 static void textview_uri_list_remove_all(GSList         *uri_list);
 151
 152 static void textview_smooth_scroll_do           (TextView       *textview,
 153                                                  gfloat          old_value,
 154                                                  gfloat          last_value,
 155                                                  gint            step);
 156 static void textview_smooth_scroll_one_line     (TextView       *textview,
 157                                                  gboolean        up);
 158 static gboolean textview_smooth_scroll_page     (TextView       *textview,
 159                                                  gboolean        up);
 160
 161
 162 TextView *textview_create(void)
 163 {
 164         TextView *textview;
 165         GtkWidget *vbox;
 166         GtkWidget *scrolledwin_sb;
 167         GtkWidget *scrolledwin_mb;
 168         GtkWidget *text_sb;
 169         GtkWidget *text_mb;
 170
 171         debug_print(_("Creating text view...\n"));
 172         textview = g_new0(TextView, 1);
 173
 174         scrolledwin_sb = gtk_scrolled_window_new(NULL, NULL);
 175         scrolledwin_mb = gtk_scrolled_window_new(NULL, NULL);
 176         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolledwin_sb),
 177                                        GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
 178         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolledwin_mb),
 179                                        GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
 180         gtk_widget_set_usize(scrolledwin_sb, prefs_common.mainview_width, -1);
 181         gtk_widget_set_usize(scrolledwin_mb, prefs_common.mainview_width, -1);
 182
 183         /* create GtkSText widgets for single-byte and multi-byte character */
 184         text_sb = gtk_stext_new(NULL, NULL);
 185         text_mb = gtk_stext_new(NULL, NULL);
 186         GTK_STEXT(text_sb)->default_tab_width = 8;
 187         GTK_STEXT(text_mb)->default_tab_width = 8;
 188         gtk_widget_show(text_sb);
 189         gtk_widget_show(text_mb);
 190         gtk_stext_set_word_wrap(GTK_STEXT(text_sb), TRUE);
 191         gtk_stext_set_word_wrap(GTK_STEXT(text_mb), TRUE);
 192         gtk_widget_ensure_style(text_sb);
 193         gtk_widget_ensure_style(text_mb);
 194         if (text_sb->style && text_sb->style->font->type == GDK_FONT_FONTSET) {
 195                 GtkStyle *style;
 196                 GdkFont *font;
 197
 198                 FONT_LOAD(font, prefs_common.normalfont);
 199                 if (font) {
 200                         style = gtk_style_copy(text_sb->style);
 201                         gdk_font_unref(style->font);
 202                         style->font = font;
 203                         gtk_widget_set_style(text_sb, style);
 204                 }
 205         }
 206         if (text_mb->style && text_mb->style->font->type == GDK_FONT_FONT) {
 207                 GtkStyle *style;
 208                 GdkFont *font;
 209
 210                 font = gdk_fontset_load(prefs_common.normalfont);
 211                 if (font) {
 212                         style = gtk_style_copy(text_mb->style);
 213                         gdk_font_unref(style->font);
 214                         style->font = font;
 215                         gtk_widget_set_style(text_mb, style);
 216                 }
 217         }
 218         gtk_widget_ref(scrolledwin_sb);
 219         gtk_widget_ref(scrolledwin_mb);
 220
 221         gtk_container_add(GTK_CONTAINER(scrolledwin_sb), text_sb);
 222         gtk_container_add(GTK_CONTAINER(scrolledwin_mb), text_mb);
 223         gtk_signal_connect(GTK_OBJECT(text_sb), "key_press_event",
 224                            GTK_SIGNAL_FUNC(textview_key_pressed),
 225                            textview);
 226         gtk_signal_connect_after(GTK_OBJECT(text_sb), "button_press_event",
 227                                  GTK_SIGNAL_FUNC(textview_button_pressed),
 228                                  textview);
 229         gtk_signal_connect_after(GTK_OBJECT(text_sb), "button_release_event",
 230                                  GTK_SIGNAL_FUNC(textview_button_released),
 231                                  textview);
 232         gtk_signal_connect(GTK_OBJECT(text_mb), "key_press_event",
 233                            GTK_SIGNAL_FUNC(textview_key_pressed),
 234                            textview);
 235         gtk_signal_connect_after(GTK_OBJECT(text_mb), "button_press_event",
 236                                  GTK_SIGNAL_FUNC(textview_button_pressed),
 237                                  textview);
 238         gtk_signal_connect_after(GTK_OBJECT(text_mb), "button_release_event",
 239                                  GTK_SIGNAL_FUNC(textview_button_released),
 240                                  textview);
 241
 242         gtk_widget_show(scrolledwin_sb);
 243         gtk_widget_show(scrolledwin_mb);
 244
 245         vbox = gtk_vbox_new(FALSE, 0);
 246         gtk_box_pack_start(GTK_BOX(vbox), scrolledwin_sb, TRUE, TRUE, 0);
 247
 248         gtk_widget_show(vbox);
 249
 250         textview->vbox             = vbox;
 251         textview->scrolledwin      = scrolledwin_sb;
 252         textview->scrolledwin_sb   = scrolledwin_sb;
 253         textview->scrolledwin_mb   = scrolledwin_mb;
 254         textview->text             = text_sb;
 255         textview->text_sb          = text_sb;
 256         textview->text_mb          = text_mb;
 257         textview->text_is_mb       = FALSE;
 258         textview->uri_list         = NULL;
 259         textview->body_pos         = 0;
 260         textview->cur_pos          = 0;
 261         textview->show_all_headers = FALSE;
 262         textview->last_buttonpress = GDK_NOTHING;
 263         textview->show_url_msgid   = 0;
 264
 265         return textview;
 266 }
 267
 268 void textview_init(TextView *textview)
 269 {
 270         gtkut_widget_disable_theme_engine(textview->text_sb);
 271         gtkut_widget_disable_theme_engine(textview->text_mb);
 272         textview_update_message_colors();
 273         textview_set_all_headers(textview, FALSE);
 274         textview_set_font(textview, NULL);
 275 }
 276
 277 void textview_update_message_colors(void)
 278 {
 279         GdkColor black = {0, 0, 0, 0};
 280
 281         if (prefs_common.enable_color) {
 282                 /* grab the quote colors, converting from an int to a GdkColor */
 283                 gtkut_convert_int_to_gdk_color(prefs_common.quote_level1_col,
 284                                                &quote_colors[0]);
 285                 gtkut_convert_int_to_gdk_color(prefs_common.quote_level2_col,
 286                                                &quote_colors[1]);
 287                 gtkut_convert_int_to_gdk_color(prefs_common.quote_level3_col,
 288                                                &quote_colors[2]);
 289                 gtkut_convert_int_to_gdk_color(prefs_common.uri_col,
 290                                                &uri_color);
 291         } else {
 292                 quote_colors[0] = quote_colors[1] = quote_colors[2] =
 293                         uri_color = emphasis_color = black;
 294         }
 295 }
 296
 297 void textview_show_message(TextView *textview, MimeInfo *mimeinfo,
 298                            const gchar *file)
 299 {
 300         GtkSText *text = GTK_STEXT(textview->text);
 301         FILE *fp;
 302         const gchar *charset = NULL;
 303         GPtrArray *headers = NULL;
 304
 305         if ((fp = fopen(file, "rb")) == NULL) {
 306                 FILE_OP_ERROR(file, "fopen");
 307                 return;
 308         }
 309
 310         if (prefs_common.force_charset)
 311                 charset = prefs_common.force_charset;
 312         else if (mimeinfo->charset)
 313                 charset = mimeinfo->charset;
 314         textview_set_font(textview, charset);
 315         textview_clear(textview);
 316
 317         gtk_stext_freeze(text);
 318
 319         if (fseek(fp, mimeinfo->fpos, SEEK_SET) < 0) perror("fseek");
 320         headers = textview_scan_header(textview, fp);
 321         if (headers) {
 322                 textview_show_header(textview, headers);
 323                 procheader_header_array_destroy(headers);
 324                 textview->body_pos = gtk_stext_get_length(text);
 325         }
 326
 327         textview_add_parts(textview, mimeinfo, fp);
 328
 329         gtk_stext_thaw(text);
 330
 331         fclose(fp);
 332 }
 333
 334 void textview_show_part(TextView *textview, MimeInfo *mimeinfo, FILE *fp)
 335 {
 336         GtkSText *text = GTK_STEXT(textview->text);
 337         gchar buf[BUFFSIZE];
 338         const gchar *boundary = NULL;
 339         gint boundary_len = 0;
 340         const gchar *charset = NULL;
 341         GPtrArray *headers = NULL;
 342
 343         g_return_if_fail(mimeinfo != NULL);
 344         g_return_if_fail(fp != NULL);
 345
 346         if (mimeinfo->mime_type == MIME_MULTIPART) {
 347                 textview_clear(textview);
 348                 textview_add_parts(textview, mimeinfo, fp);
 349                 return;
 350         }
 351
 352         if (mimeinfo->parent && mimeinfo->parent->boundary) {
 353                 boundary = mimeinfo->parent->boundary;
 354                 boundary_len = strlen(boundary);
 355         }
 356
 357         if (!boundary && (mimeinfo->mime_type == MIME_TEXT ||
 358                           mimeinfo->mime_type == MIME_TEXT_HTML ||
 359                           mimeinfo->mime_type == MIME_TEXT_ENRICHED)) {
 360
 361                 if (fseek(fp, mimeinfo->fpos, SEEK_SET) < 0)
 362                         perror("fseek");
 363                 headers = textview_scan_header(textview, fp);
 364         } else {
 365                 if (mimeinfo->mime_type == MIME_TEXT && mimeinfo->parent) {
 366                         glong fpos;
 367                         MimeInfo *parent = mimeinfo->parent;
 368
 369                         while (parent->parent) {
 370                                 if (parent->main &&
 371                                     parent->main->mime_type ==
 372                                         MIME_MESSAGE_RFC822)
 373                                         break;
 374                                 parent = parent->parent;
 375                         }
 376
 377                         if ((fpos = ftell(fp)) < 0)
 378                                 perror("ftell");
 379                         else if (fseek(fp, parent->fpos, SEEK_SET) < 0)
 380                                 perror("fseek");
 381                         else {
 382                                 headers = textview_scan_header(textview, fp);
 383                                 if (fseek(fp, fpos, SEEK_SET) < 0)
 384                                         perror("fseek");
 385                         }
 386                 }
 387                 /* skip MIME part headers */
 388                 while (fgets(buf, sizeof(buf), fp) != NULL)
 389                         if (buf[0] == '\r' || buf[0] == '\n') break;
 390         }
 391
 392         /* display attached RFC822 single text message */
 393         if (mimeinfo->mime_type == MIME_MESSAGE_RFC822) {
 394                 if (headers) procheader_header_array_destroy(headers);
 395                 if (!mimeinfo->sub) {
 396                         textview_clear(textview);
 397                         return;
 398                 }
 399                 headers = textview_scan_header(textview, fp);
 400                 mimeinfo = mimeinfo->sub;
 401         }
 402
 403         if (prefs_common.force_charset)
 404                 charset = prefs_common.force_charset;
 405         else if (mimeinfo->charset)
 406                 charset = mimeinfo->charset;
 407         textview_set_font(textview, charset);
 408
 409         textview_clear(textview);
 410         gtk_stext_freeze(text);
 411
 412         if (headers) {
 413                 textview_show_header(textview, headers);
 414                 procheader_header_array_destroy(headers);
 415                 textview->body_pos = gtk_stext_get_length(text);
 416                 if (!mimeinfo->main)
 417                         gtk_stext_insert(text, NULL, NULL, NULL, "\n", 1);
 418         }
 419
 420         if (mimeinfo->mime_type == MIME_MULTIPART || mimeinfo->main)
 421                 textview_add_parts(textview, mimeinfo, fp);
 422         else
 423                 textview_write_body(textview, mimeinfo, fp, charset);
 424
 425         gtk_stext_thaw(text);
 426 }
 427
 428 static void textview_add_part(TextView *textview, MimeInfo *mimeinfo, FILE *fp)
 429 {
 430         GtkSText *text = GTK_STEXT(textview->text);
 431         gchar buf[BUFFSIZE];
 432         const gchar *boundary = NULL;
 433         gint boundary_len = 0;
 434         const gchar *charset = NULL;
 435         GPtrArray *headers = NULL;
 436
 437         g_return_if_fail(mimeinfo != NULL);
 438         g_return_if_fail(fp != NULL);
 439
 440         if (mimeinfo->mime_type == MIME_MULTIPART) return;
 441
 442         if (!mimeinfo->parent &&
 443             mimeinfo->mime_type != MIME_TEXT &&
 444             mimeinfo->mime_type != MIME_TEXT_HTML &&
 445             mimeinfo->mime_type != MIME_TEXT_ENRICHED)
 446                 return;
 447
 448         if (fseek(fp, mimeinfo->fpos, SEEK_SET) < 0) {
 449                 perror("fseek");
 450                 return;
 451         }
 452
 453         if (mimeinfo->parent && mimeinfo->parent->boundary) {
 454                 boundary = mimeinfo->parent->boundary;
 455                 boundary_len = strlen(boundary);
 456         }
 457
 458         while (fgets(buf, sizeof(buf), fp) != NULL)
 459                 if (buf[0] == '\r' || buf[0] == '\n') break;
 460
 461         if (mimeinfo->mime_type == MIME_MESSAGE_RFC822) {
 462                 headers = textview_scan_header(textview, fp);
 463                 if (headers) {
 464                         gtk_stext_insert(text, NULL, NULL, NULL, "\n", 1);
 465                         textview_show_header(textview, headers);
 466                         procheader_header_array_destroy(headers);
 467                 }
 468                 return;
 469         }
 470
 471         gtk_stext_freeze(text);
 472
 473         if (mimeinfo->filename || mimeinfo->name)
 474                 g_snprintf(buf, sizeof(buf), "\n[%s  %s (%d bytes)]\n",
 475                            mimeinfo->filename ? mimeinfo->filename :
 476                            mimeinfo->name,
 477                            mimeinfo->content_type, mimeinfo->size);
 478         else
 479                 g_snprintf(buf, sizeof(buf), "\n[%s (%d bytes)]\n",
 480                            mimeinfo->content_type, mimeinfo->size);
 481
 482         if (mimeinfo->mime_type != MIME_TEXT &&
 483             mimeinfo->mime_type != MIME_TEXT_HTML &&
 484             mimeinfo->mime_type != MIME_TEXT_ENRICHED) {
 485                 gtk_stext_insert(text, NULL, NULL, NULL, buf, -1);
 486         } else {
 487                 if (!mimeinfo->main &&
 488                     mimeinfo->parent &&
 489                     mimeinfo->parent->children != mimeinfo)
 490                         gtk_stext_insert(text, NULL, NULL, NULL, buf, -1);
 491                 else
 492                         gtk_stext_insert(text, NULL, NULL, NULL, "\n", 1);
 493                 if (prefs_common.force_charset)
 494                         charset = prefs_common.force_charset;
 495                 else if (mimeinfo->charset)
 496                         charset = mimeinfo->charset;
 497                 textview_write_body(textview, mimeinfo, fp, charset);
 498         }
 499
 500         gtk_stext_thaw(text);
 501 }
 502
 503 static void textview_add_parts(TextView *textview, MimeInfo *mimeinfo, FILE *fp)
 504 {
 505         gint level;
 506
 507         g_return_if_fail(mimeinfo != NULL);
 508         g_return_if_fail(fp != NULL);
 509
 510         level = mimeinfo->level;
 511
 512         for (;;) {
 513                 textview_add_part(textview, mimeinfo, fp);
 514                 if (mimeinfo->parent && mimeinfo->parent->content_type &&
 515                     !strcasecmp(mimeinfo->parent->content_type,
 516                                 "multipart/alternative"))
 517                         mimeinfo = mimeinfo->parent->next;
 518                 else
 519                         mimeinfo = procmime_mimeinfo_next(mimeinfo);
 520                 if (!mimeinfo || mimeinfo->level <= level)
 521                         break;
 522         }
 523 }
 524
 525 #define TEXT_INSERT(str) \
 526         gtk_stext_insert(text, textview->msgfont, NULL, NULL, str, -1)
 527
 528 void textview_show_mime_part(TextView *textview, MimeInfo *partinfo)
 529 {
 530         GtkSText *text;
 531
 532         if (!partinfo) return;
 533
 534         textview_set_font(textview, NULL);
 535         text = GTK_STEXT(textview->text);
 536         textview_clear(textview);
 537
 538         gtk_stext_freeze(text);
 539
 540         TEXT_INSERT(_("To save this part, pop up the context menu with "));
 541         TEXT_INSERT(_("right click and select `Save as...', "));
 542         TEXT_INSERT(_("or press `y' key.\n\n"));
 543
 544         TEXT_INSERT(_("To display this part as a text message, select "));
 545         TEXT_INSERT(_("`Display as text', or press `t' key.\n\n"));
 546
 547         TEXT_INSERT(_("To display this part as an image, select "));
 548         TEXT_INSERT(_("`Display image', or press `i' key.\n\n"));
 549
 550         TEXT_INSERT(_("To open this part with external program, select "));
 551         TEXT_INSERT(_("`Open' or `Open with...', "));
 552         TEXT_INSERT(_("or double-click, or click the center button, "));
 553         TEXT_INSERT(_("or press `l' key."));
 554
 555         gtk_stext_thaw(text);
 556 }
 557
 558 #if USE_GPGME
 559 void textview_show_signature_part(TextView *textview, MimeInfo *partinfo)
 560 {
 561         GtkSText *text;
 562
 563         if (!partinfo) return;
 564
 565         textview_set_font(textview, NULL);
 566         text = GTK_STEXT(textview->text);
 567         textview_clear(textview);
 568
 569         gtk_stext_freeze(text);
 570
 571         if (partinfo->sigstatus_full == NULL) {
 572                 TEXT_INSERT(_("This signature has not been checked yet.\n"));
 573                 TEXT_INSERT(_("To check it, pop up the context menu with\n"));
 574                 TEXT_INSERT(_("right click and select `Check signature'.\n"));
 575         } else {
 576                 TEXT_INSERT(partinfo->sigstatus_full);
 577         }
 578
 579         gtk_stext_thaw(text);
 580 }
 581 #endif /* USE_GPGME */
 582
 583 #undef TEXT_INSERT
 584
 585 static void textview_write_body(TextView *textview, MimeInfo *mimeinfo,
 586                                 FILE *fp, const gchar *charset)
 587 {
 588         FILE *tmpfp;
 589         gchar buf[BUFFSIZE];
 590         CodeConverter *conv;
 591
 592         conv = conv_code_converter_new(charset);
 593
 594         tmpfp = procmime_decode_content(NULL, fp, mimeinfo);
 595         if (tmpfp) {
 596                 if (mimeinfo->mime_type == MIME_TEXT_HTML)
 597                         textview_show_html(textview, tmpfp, conv);
 598                 else if (mimeinfo->mime_type == MIME_TEXT_ENRICHED)
 599                         textview_show_ertf(textview, tmpfp, conv);
 600                 else
 601                         while (fgets(buf, sizeof(buf), tmpfp) != NULL)
 602                                 textview_write_line(textview, buf, conv);
 603                 fclose(tmpfp);
 604         }
 605
 606         conv_code_converter_destroy(conv);
 607 }
 608
 609 static void textview_show_html(TextView *textview, FILE *fp,
 610                                CodeConverter *conv)
 611 {
 612         HTMLParser *parser;
 613         gchar *str;
 614         gchar* url = NULL;
 615
 616         parser = html_parser_new(fp, conv);
 617         g_return_if_fail(parser != NULL);
 618
 619         while ((str = html_parse(parser)) != NULL) {
 620                 if (parser->state == HTML_HREF) {
 621                         /* first time : get and copy the URL */
 622                         if (url == NULL) {
 623                                 /* ALF - the sylpheed html parser returns an empty string,
 624                                  * if still inside an <a>, but already parsed past HREF */
 625                                 str = strtok(str, " ");
 626                                 if (str) {
 627                                         url = strdup(str);
 628                                         /* the URL may (or not) be followed by the
 629                                          * referenced text */
 630                                         str = strtok(NULL, "");
 631                                 }
 632                         }
 633                         if (str != NULL) {
 634                                 textview_write_link(textview, url, str, NULL);
 635                         }
 636                 } else {
 637                         if (url != NULL) {
 638                                 free(url);
 639                                 url = NULL;
 640                         }
 641                         textview_write_line(textview, str, NULL);
 642                 }
 643         }
 644         html_parser_destroy(parser);
 645 }
 646
 647 static void textview_show_ertf(TextView *textview, FILE *fp,
 648                                CodeConverter *conv)
 649 {
 650         ERTFParser *parser;
 651         gchar *str;
 652         gchar* url = NULL;
 653
 654         parser = ertf_parser_new(fp, conv);
 655         g_return_if_fail(parser != NULL);
 656
 657         while ((str = ertf_parse(parser)) != NULL) {
 658                 textview_write_line(textview, str, NULL);
 659         }
 660         ertf_parser_destroy(parser);
 661 }
 662
 663 /* get_uri_part() - retrieves a URI starting from scanpos.
 664                     Returns TRUE if succesful */
 665 static gboolean get_uri_part(const gchar *start, const gchar *scanpos,
 666                              const gchar **bp, const gchar **ep)
 667 {
 668         const gchar *ep_;
 669
 670         g_return_val_if_fail(start != NULL, FALSE);
 671         g_return_val_if_fail(scanpos != NULL, FALSE);
 672         g_return_val_if_fail(bp != NULL, FALSE);
 673         g_return_val_if_fail(ep != NULL, FALSE);
 674
 675         *bp = scanpos;
 676
 677         /* find end point of URI */
 678         for (ep_ = scanpos; *ep_ != '\0'; ep_++) {
 679                 if (!isgraph(*ep_) || !isascii(*ep_) || strchr("()<>\"", *ep_))
 680                         break;
 681         }
 682
 683         /* no punctuation at end of string */
 684
 685         /* FIXME: this stripping of trailing punctuations may bite with other URIs.
 686          * should pass some URI type to this function and decide on that whether
 687          * to perform punctuation stripping */
 688
 689 #define IS_REAL_PUNCT(ch)       (ispunct(ch) && ((ch) != '/'))
 690
 691         for (; ep_ - 1 > scanpos + 1 && IS_REAL_PUNCT(*(ep_ - 1)); ep_--)
 692                 ;
 693
 694 #undef IS_REAL_PUNCT
 695
 696         *ep = ep_;
 697
 698         return TRUE;
 699 }
 700
 701 static gchar *make_uri_string(const gchar *bp, const gchar *ep)
 702 {
 703         return g_strndup(bp, ep - bp);
 704 }
 705
 706 /* valid mail address characters */
 707 #define IS_RFC822_CHAR(ch) \
 708         (isascii(ch) && \
 709          (ch) > 32   && \
 710          (ch) != 127 && \
 711          !isspace(ch) && \
 712          !strchr("(),;<>\"", (ch)))
 713
 714 /* alphabet and number within 7bit ASCII */
 715 #define IS_ASCII_ALNUM(ch)      (isascii(ch) && isalnum(ch))
 716 #define IS_QUOTE(ch) ((ch) == '\'' || (ch) == '"')
 717
 718 /* get_email_part() - retrieves an email address. Returns TRUE if succesful */
 719 static gboolean get_email_part(const gchar *start, const gchar *scanpos,
 720                                const gchar **bp, const gchar **ep)
 721 {
 722         /* more complex than the uri part because we need to scan back and forward starting from
 723          * the scan position. */
 724         gboolean result = FALSE;
 725         const gchar *bp_ = NULL;
 726         const gchar *ep_ = NULL;
 727
 728         /* the informative part of the email address (describing the name
 729          * of the email address owner) may contain quoted parts. the
 730          * closure stack stores the last encountered quotes. */
 731         gchar closure_stack[128];
 732         gchar *ptr = closure_stack;
 733
 734         g_return_val_if_fail(start != NULL, FALSE);
 735         g_return_val_if_fail(scanpos != NULL, FALSE);
 736         g_return_val_if_fail(bp != NULL, FALSE);
 737         g_return_val_if_fail(ep != NULL, FALSE);
 738
 739         /* scan start of address */
 740         for (bp_ = scanpos - 1; bp_ >= start && IS_RFC822_CHAR(*bp_); bp_--)
 741                 ;
 742
 743         /* TODO: should start with an alnum? */
 744         bp_++;
 745         for (; bp_ < scanpos && !IS_ASCII_ALNUM(*bp_); bp_++)
 746                 ;
 747
 748         if (bp_ != scanpos) {
 749                 /* scan end of address */
 750                 for (ep_ = scanpos + 1; *ep_ && IS_RFC822_CHAR(*ep_); ep_++)
 751                         ;
 752
 753                 /* TODO: really should terminate with an alnum? */
 754                 for (; ep_ > scanpos && !IS_ASCII_ALNUM(*ep_); --ep_)
 755                         ;
 756                 ep_++;
 757
 758                 if (ep_ > scanpos + 1) {
 759                         *ep = ep_;
 760                         *bp = bp_;
 761                         result = TRUE;
 762                 }
 763         }
 764
 765         if (!result) return FALSE;
 766
 767         /* skip if it's between quotes "'alfons@proteus.demon.nl'" <alfons@proteus.demon.nl> */
 768         if (bp_ - 1 > start && IS_QUOTE(*(bp_ - 1)) && IS_QUOTE(*ep_))
 769                 return FALSE;
 770
 771         /* see if this is <bracketed>; in this case we also scan for the informative part. */
 772         if (bp_ - 1 <= start || *(bp_ - 1) != '<' || *ep_ != '>')
 773                 return TRUE;
 774
 775 #define FULL_STACK()    ((size_t) (ptr - closure_stack) >= sizeof closure_stack)
 776 #define IN_STACK()      (ptr > closure_stack)
 777 /* has underrun check */
 778 #define POP_STACK()     if(IN_STACK()) --ptr
 779 /* has overrun check */
 780 #define PUSH_STACK(c)   if(!FULL_STACK()) *ptr++ = (c); else return TRUE
 781 /* has underrun check */
 782 #define PEEK_STACK()    (IN_STACK() ? *(ptr - 1) : 0)
 783
 784         ep_++;
 785
 786         /* scan for the informative part. */
 787         for (bp_ -= 2; bp_ >= start; bp_--) {
 788                 /* if closure on the stack keep scanning */
 789                 if (PEEK_STACK() == *bp_) {
 790                         POP_STACK();
 791                         continue;
 792                 }
 793                 if (*bp_ == '\'' || *bp_ == '"') {
 794                         PUSH_STACK(*bp_);
 795                         continue;
 796                 }
 797
 798                 /* if nothing in the closure stack, do the special conditions
 799                  * the following if..else expression simply checks whether
 800                  * a token is acceptable. if not acceptable, the clause
 801                  * should terminate the loop with a 'break' */
 802                 if (!PEEK_STACK()) {
 803                         if (*bp_ == '-'
 804                         && (((bp_ - 1) >= start) && isalnum(*(bp_ - 1)))
 805                         && (((bp_ + 1) < ep_)    && isalnum(*(bp_ + 1)))) {
 806                                 /* hyphens are allowed, but only in
 807                                    between alnums */
 808                         } else if (!ispunct(*bp_)) {
 809                                 /* but anything not being a punctiation
 810                                    is ok */
 811                         } else {
 812                                 break; /* anything else is rejected */
 813                         }
 814                 }
 815         }
 816
 817         bp_++;
 818
 819 #undef PEEK_STACK
 820 #undef PUSH_STACK
 821 #undef POP_STACK
 822 #undef IN_STACK
 823 #undef FULL_STACK
 824
 825         /* scan forward (should start with an alnum) */
 826         for (; *bp_ != '<' && isspace(*bp_) && *bp_ != '"'; bp_++)
 827                 ;
 828
 829         *ep = ep_;
 830         *bp = bp_;
 831
 832         return result;
 833 }
 834
 835 #undef IS_QUOTE
 836 #undef IS_RFC822_CHAR
 837
 838 static gchar *make_email_string(const gchar *bp, const gchar *ep)
 839 {
 840         /* returns a mailto: URI; mailto: is also used to detect the
 841          * uri type later on in the button_pressed signal handler */
 842         gchar *tmp;
 843         gchar *result;
 844
 845         tmp = g_strndup(bp, ep - bp);
 846         result = g_strconcat("mailto:", tmp, NULL);
 847         g_free(tmp);
 848
 849         return result;
 850 }
 851
 852 #define ADD_TXT_POS(bp_, ep_, pti_) \
 853         if ((last->next = alloca(sizeof(struct txtpos))) != NULL) { \
 854                 last = last->next; \
 855                 last->bp = (bp_); last->ep = (ep_); last->pti = (pti_); \
 856                 last->next = NULL; \
 857         } else { \
 858                 g_warning("alloc error scanning URIs\n"); \
 859                 gtk_stext_insert(text, textview->msgfont, fg_color, NULL, \
 860                                 linebuf, -1); \
 861                 return; \
 862         }
 863
 864 /* textview_make_clickable_parts() - colorizes clickable parts */
 865 static void textview_make_clickable_parts(TextView *textview,
 866                                           GdkFont *font,
 867                                           GdkColor *fg_color,
 868                                           GdkColor *uri_color,
 869                                           const gchar *linebuf)
 870 {
 871         /* parse table - in order of priority */
 872         struct table {
 873                 const gchar *needle; /* token */
 874
 875                 /* token search function */
 876                 gchar    *(*search)     (const gchar *haystack,
 877                                          const gchar *needle);
 878                 /* part parsing function */
 879                 gboolean  (*parse)      (const gchar *start,
 880                                          const gchar *scanpos,
 881                                          const gchar **bp_,
 882                                          const gchar **ep_);
 883                 /* part to URI function */
 884                 gchar    *(*build_uri)  (const gchar *bp,
 885                                          const gchar *ep);
 886         };
 887
 888         static struct table parser[] = {
 889                 {"http://",  strcasestr, get_uri_part,   make_uri_string},
 890                 {"https://", strcasestr, get_uri_part,   make_uri_string},
 891                 {"www.",     strcasestr, get_uri_part,   make_uri_string},
 892                 {"ftp://",   strcasestr, get_uri_part,   make_uri_string},
 893                 {"mailto:",  strcasestr, get_uri_part,   make_uri_string},
 894                 {"@",        strcasestr, get_email_part, make_email_string}
 895         };
 896         const gint PARSE_ELEMS = sizeof parser / sizeof parser[0];
 897
 898         gint  n;
 899         const gchar *walk, *bp, *ep;
 900
 901         struct txtpos {
 902                 const gchar     *bp, *ep;       /* text position */
 903                 gint             pti;           /* index in parse table */
 904                 struct txtpos   *next;          /* next */
 905         } head = {NULL, NULL, 0,  NULL}, *last = &head;
 906
 907         GtkSText *text = GTK_STEXT(textview->text);
 908
 909         /* parse for clickable parts, and build a list of begin and end positions  */
 910         for (walk = linebuf, n = 0;;) {
 911                 gint last_index = PARSE_ELEMS;
 912                 gchar *scanpos = NULL;
 913
 914                 /* FIXME: this looks phony. scanning for anything in the parse table */
 915                 for (n = 0; n < PARSE_ELEMS; n++) {
 916                         gchar *tmp;
 917
 918                         tmp = parser[n].search(walk, parser[n].needle);
 919                         if (tmp) {
 920                                 if (scanpos == NULL || tmp < scanpos) {
 921                                         scanpos = tmp;
 922                                         last_index = n;
 923                                 }
 924                         }
 925                 }
 926
 927                 if (scanpos) {
 928                         /* check if URI can be parsed */
 929                         if (parser[last_index].parse(linebuf, scanpos, &bp, &ep)
 930                             && (size_t) (ep - bp - 1) > strlen(parser[last_index].needle)) {
 931                                         ADD_TXT_POS(bp, ep, last_index);
 932                                         walk = ep;
 933                         } else
 934                                 walk = scanpos +
 935                                         strlen(parser[last_index].needle);
 936                 } else
 937                         break;
 938         }
 939
 940         /* colorize this line */
 941         if (head.next) {
 942                 const gchar *normal_text = linebuf;
 943
 944                 /* insert URIs */
 945                 for (last = head.next; last != NULL;
 946                      normal_text = last->ep, last = last->next) {
 947                         RemoteURI *uri;
 948
 949                         uri = g_new(RemoteURI, 1);
 950                         if (last->bp - normal_text > 0)
 951                                 gtk_stext_insert(text, font,
 952                                                 fg_color, NULL,
 953                                                 normal_text,
 954                                                 last->bp - normal_text);
 955                         uri->uri = parser[last->pti].build_uri(last->bp,
 956                                                                last->ep);
 957                         uri->start = gtk_stext_get_point(text);
 958                         gtk_stext_insert(text, font, uri_color,
 959                                         NULL, last->bp, last->ep - last->bp);
 960                         uri->end = gtk_stext_get_point(text);
 961                         textview->uri_list =
 962                                 g_slist_append(textview->uri_list, uri);
 963                 }
 964
 965                 if (*normal_text)
 966                         gtk_stext_insert(text, font, fg_color,
 967                                         NULL, normal_text, -1);
 968         } else
 969                 gtk_stext_insert(text, font, fg_color, NULL, linebuf, -1);
 970 }
 971
 972 #undef ADD_TXT_POS
 973
 974 /* This function writes str as a double-clickable link with the given url. */
 975 static void textview_write_link(TextView *textview, const gchar *url,
 976                                 const gchar *str, CodeConverter *conv)
 977 {
 978     GdkColor *link_color = NULL;
 979     RemoteURI* uri;
 980     GtkSText *text = GTK_STEXT(textview->text);
 981     gchar buf[BUFFSIZE];
 982
 983     /* this part is taken from textview_write_line. Right now the only place
 984      * that calls this function passes NULL for conv, but you never know. */
 985 #if 0
 986     if (!conv)
 987             strncpy2(buf, str, sizeof(buf));
 988     else if (conv_convert(conv, buf, sizeof(buf), str) < 0) {
 989             gtk_stext_insert(text, textview->msgfont,
 990                             prefs_common.enable_color
 991                             ? &error_color : NULL, NULL,
 992                             "*** Warning: code conversion failed ***\n",
 993                             -1);
 994             return;
 995     }
 996 #endif
 997
 998     /* this part is based on the code in make_clickable_parts */
 999     if (prefs_common.enable_color) {
1000         link_color = &uri_color;
1001     }
1002     uri = g_new(RemoteURI, 1);
1003     uri->uri = g_strdup(url);
1004     uri->start = gtk_stext_get_point(text);
1005     gtk_stext_insert(text, textview->msgfont, link_color, NULL, str,
1006                     strlen(str));
1007     uri->end = gtk_stext_get_point(text);
1008     textview->uri_list = g_slist_append(textview->uri_list, uri);
1009 }
1010
1011 static void textview_write_line(TextView *textview, const gchar *str,
1012                                 CodeConverter *conv)
1013 {
1014         GtkSText *text = GTK_STEXT(textview->text);
1015         gchar buf[BUFFSIZE];
1016         GdkColor *fg_color;
1017         gint quotelevel = -1;
1018
1019 #if 0
1020         if (!conv)
1021                 strncpy2(buf, str, sizeof(buf));
1022         else if (conv_convert(conv, buf, sizeof(buf), str) < 0) {
1023                 gtk_stext_insert(text, textview->msgfont,
1024                                 prefs_common.enable_color
1025                                 ? &error_color : NULL, NULL,
1026                                 "*** Warning: code conversion failed ***\n",
1027                                 -1);
1028                 return;
1029         }
1030 #endif
1031         if (!conv || conv_convert(conv, buf, sizeof(buf), str) < 0)
1032                 strncpy2(buf, str, sizeof(buf));
1033
1034         strcrchomp(buf);
1035         if (prefs_common.conv_mb_alnum) conv_mb_alnum(buf);
1036         fg_color = NULL;
1037
1038         /* change color of quotation
1039            >, foo>, _> ... ok, <foo>, foo bar>, foo-> ... ng
1040            Up to 3 levels of quotations are detected, and each
1041            level is colored using a different color. */
1042         if (prefs_common.enable_color
1043             && line_has_quote_char(buf, prefs_common.quote_chars)) {
1044                 quotelevel = get_quote_level(buf, prefs_common.quote_chars);
1045
1046                 /* set up the correct foreground color */
1047                 if (quotelevel > 2) {
1048                         /* recycle colors */
1049                         if (prefs_common.recycle_quote_colors)
1050                                 quotelevel %= 3;
1051                         else
1052                                 quotelevel = 2;
1053                 }
1054         }
1055
1056         if (quotelevel == -1)
1057                 fg_color = NULL;
1058         else
1059                 fg_color = &quote_colors[quotelevel];
1060
1061         if (prefs_common.head_space && spacingfont && buf[0] != '\n')
1062                 gtk_stext_insert(text, spacingfont, NULL, NULL, " ", 1);
1063
1064         if (prefs_common.enable_color)
1065                 textview_make_clickable_parts(textview, textview->msgfont,
1066                                               fg_color, &uri_color, buf);
1067         else
1068                 textview_make_clickable_parts(textview, textview->msgfont,
1069                                               fg_color, NULL, buf);
1070 }
1071
1072 void textview_clear(TextView *textview)
1073 {
1074         GtkSText *text = GTK_STEXT(textview->text);
1075
1076         gtk_stext_freeze(text);
1077         gtk_stext_set_point(text, 0);
1078         gtk_stext_forward_delete(text, gtk_stext_get_length(text));
1079         gtk_stext_thaw(text);
1080
1081         textview_uri_list_remove_all(textview->uri_list);
1082         textview->uri_list = NULL;
1083
1084         textview->body_pos = 0;
1085         textview->cur_pos  = 0;
1086 }
1087
1088 void textview_destroy(TextView *textview)
1089 {
1090         textview_uri_list_remove_all(textview->uri_list);
1091         textview->uri_list = NULL;
1092
1093         if (!textview->scrolledwin_sb->parent)
1094                 gtk_widget_destroy(textview->scrolledwin_sb);
1095         if (!textview->scrolledwin_mb->parent)
1096                 gtk_widget_destroy(textview->scrolledwin_mb);
1097
1098         if (textview->msgfont)
1099                 gdk_font_unref(textview->msgfont);
1100         if (textview->boldfont)
1101                 gdk_font_unref(textview->boldfont);
1102
1103         g_free(textview);
1104 }
1105
1106 void textview_set_all_headers(TextView *textview, gboolean all_headers)
1107 {
1108         textview->show_all_headers = all_headers;
1109 }
1110
1111 void textview_set_font(TextView *textview, const gchar *codeset)
1112 {
1113         gboolean use_fontset = TRUE;
1114
1115         /* In multi-byte mode, GtkSText can't display 8bit characters
1116            correctly, so it must be single-byte mode. */
1117         if (MB_CUR_MAX > 1) {
1118                 if (codeset) {
1119                         if (!g_strncasecmp(codeset, "ISO-8859-", 9) ||
1120                             !g_strcasecmp(codeset, "BALTIC"))
1121                                 use_fontset = FALSE;
1122                         else if (conv_get_current_charset() != C_EUC_JP &&
1123                                  (!g_strncasecmp(codeset, "KOI8-", 5) ||
1124                                   !g_strncasecmp(codeset, "CP", 2)    ||
1125                                   !g_strncasecmp(codeset, "WINDOWS-", 8)))
1126                                 use_fontset = FALSE;
1127                 }
1128         } else
1129                 use_fontset = FALSE;
1130
1131         if (textview->text_is_mb && !use_fontset) {
1132                 GtkWidget *parent;
1133
1134                 parent = textview->scrolledwin_mb->parent;
1135                 gtkut_container_remove(GTK_CONTAINER(parent),
1136                                        textview->scrolledwin_mb);
1137                 gtk_container_add(GTK_CONTAINER(parent),
1138                                   textview->scrolledwin_sb);
1139
1140                 textview->text = textview->text_sb;
1141                 textview->text_is_mb = FALSE;
1142         } else if (!textview->text_is_mb && use_fontset) {
1143                 GtkWidget *parent;
1144
1145                 parent = textview->scrolledwin_sb->parent;
1146                 gtkut_container_remove(GTK_CONTAINER(parent),
1147                                        textview->scrolledwin_sb);
1148                 gtk_container_add(GTK_CONTAINER(parent),
1149                                   textview->scrolledwin_mb);
1150
1151                 textview->text = textview->text_mb;
1152                 textview->text_is_mb = TRUE;
1153         }
1154
1155         if (prefs_common.textfont) {
1156                 GdkFont *font;
1157
1158                 if (use_fontset) {
1159                         if (text_mb_font) {
1160                                 text_mb_font->ascent = text_mb_font_orig_ascent;
1161                                 text_mb_font->descent = text_mb_font_orig_descent;
1162                         }
1163                         font = gdk_fontset_load(prefs_common.textfont);
1164                         if (font && text_mb_font != font) {
1165                                 if (text_mb_font)
1166                                         gdk_font_unref(text_mb_font);
1167                                 text_mb_font = font;
1168                                 text_mb_font_orig_ascent = font->ascent;
1169                                 text_mb_font_orig_descent = font->descent;
1170                         }
1171                 } else {
1172                         if (text_sb_font) {
1173                                 text_sb_font->ascent = text_sb_font_orig_ascent;
1174                                 text_sb_font->descent = text_sb_font_orig_descent;
1175                         }
1176                         if (MB_CUR_MAX > 1) {
1177                                 FONT_LOAD(font, "-*-courier-medium-r-normal--14-*-*-*-*-*-iso8859-1");
1178                         } else {
1179                                 FONT_LOAD(font, prefs_common.textfont);
1180                         }
1181                         if (font && text_sb_font != font) {
1182                                 if (text_sb_font)
1183                                         gdk_font_unref(text_sb_font);
1184                                 text_sb_font = font;
1185                                 text_sb_font_orig_ascent = font->ascent;
1186                                 text_sb_font_orig_descent = font->descent;
1187                         }
1188                 }
1189
1190                 if (font) {
1191                         gint ascent, descent;
1192
1193                         descent = prefs_common.line_space / 2;
1194                         ascent  = prefs_common.line_space - descent;
1195                         font->ascent  += ascent;
1196                         font->descent += descent;
1197
1198                         if (textview->msgfont)
1199                                 gdk_font_unref(textview->msgfont);
1200                         textview->msgfont = font;
1201                         gdk_font_ref(font);
1202                 }
1203         }
1204
1205         if (!textview->boldfont && prefs_common.boldfont)
1206                 FONT_LOAD(textview->boldfont, prefs_common.boldfont);
1207         if (!spacingfont)
1208                 spacingfont = gdk_font_load("-*-*-medium-r-normal--6-*");
1209 }
1210
1211 enum
1212 {
1213         H_DATE          = 0,
1214         H_FROM          = 1,
1215         H_TO            = 2,
1216         H_NEWSGROUPS    = 3,
1217         H_SUBJECT       = 4,
1218         H_CC            = 5,
1219         H_REPLY_TO      = 6,
1220         H_FOLLOWUP_TO   = 7,
1221         H_X_MAILER      = 8,
1222         H_X_NEWSREADER  = 9,
1223         H_USER_AGENT    = 10,
1224         H_ORGANIZATION  = 11,
1225 };
1226
1227 void textview_set_position(TextView *textview, gint pos)
1228 {
1229         if (pos < 0) {
1230                 textview->cur_pos =
1231                         gtk_stext_get_length(GTK_STEXT(textview->text));
1232         } else {
1233                 textview->cur_pos = pos;
1234         }
1235 }
1236
1237 static GPtrArray *textview_scan_header(TextView *textview, FILE *fp)
1238 {
1239         gchar buf[BUFFSIZE];
1240         GPtrArray *headers, *sorted_headers;
1241         GSList *disphdr_list;
1242         Header *header;
1243         gint i;
1244
1245         g_return_val_if_fail(fp != NULL, NULL);
1246
1247         if (textview->show_all_headers)
1248                 return procheader_get_header_array_asis(fp);
1249
1250         if (!prefs_common.display_header) {
1251                 while (fgets(buf, sizeof(buf), fp) != NULL)
1252                         if (buf[0] == '\r' || buf[0] == '\n') break;
1253                 return NULL;
1254         }
1255
1256         headers = procheader_get_header_array_asis(fp);
1257
1258         sorted_headers = g_ptr_array_new();
1259
1260         for (disphdr_list = prefs_common.disphdr_list; disphdr_list != NULL;
1261              disphdr_list = disphdr_list->next) {
1262                 DisplayHeaderProp *dp =
1263                         (DisplayHeaderProp *)disphdr_list->data;
1264
1265                 for (i = 0; i < headers->len; i++) {
1266                         header = g_ptr_array_index(headers, i);
1267
1268                         if (procheader_headername_equal(header->name,
1269                                                         dp->name)) {
1270                                 if (dp->hidden)
1271                                         procheader_header_free(header);
1272                                 else
1273                                         g_ptr_array_add(sorted_headers, header);
1274
1275                                 g_ptr_array_remove_index(headers, i);
1276                                 i--;
1277                         }
1278                 }
1279         }
1280
1281         if (prefs_common.show_other_header) {
1282                 for (i = 0; i < headers->len; i++) {
1283                         header = g_ptr_array_index(headers, i);
1284                         g_ptr_array_add(sorted_headers, header);
1285                 }
1286         }
1287
1288         g_ptr_array_free(headers, FALSE);
1289
1290         return sorted_headers;
1291 }
1292
1293 static void textview_show_header(TextView *textview, GPtrArray *headers)
1294 {
1295         GtkSText *text = GTK_STEXT(textview->text);
1296         Header *header;
1297         gint i;
1298
1299         g_return_if_fail(headers != NULL);
1300
1301         gtk_stext_freeze(text);
1302
1303         for (i = 0; i < headers->len; i++) {
1304                 header = g_ptr_array_index(headers, i);
1305                 g_return_if_fail(header->name != NULL);
1306
1307                 gtk_stext_insert(text, textview->boldfont, NULL, NULL,
1308                                 header->name, -1);
1309                 if (header->name[strlen(header->name) - 1] != ' ')
1310                         gtk_stext_insert(text, textview->boldfont,
1311                                         NULL, NULL, " ", 1);
1312
1313                 if (procheader_headername_equal(header->name, "Subject") ||
1314                     procheader_headername_equal(header->name, "From")    ||
1315                     procheader_headername_equal(header->name, "To")      ||
1316                     procheader_headername_equal(header->name, "Cc"))
1317                         unfold_line(header->body);
1318
1319                 if (prefs_common.enable_color &&
1320                     (procheader_headername_equal(header->name, "X-Mailer") ||
1321                      procheader_headername_equal(header->name,
1322                                                  "X-Newsreader")) &&
1323                     strstr(header->body, "Sylpheed") != NULL)
1324                         gtk_stext_insert(text, NULL, &emphasis_color, NULL,
1325                                         header->body, -1);
1326                 else if (prefs_common.enable_color) {
1327                         textview_make_clickable_parts(textview,
1328                                                       NULL, NULL, &uri_color,
1329                                                       header->body);
1330                 } else {
1331                         textview_make_clickable_parts(textview,
1332                                                       NULL, NULL, NULL,
1333                                                       header->body);
1334                 }
1335                 gtk_stext_insert(text, textview->msgfont, NULL, NULL, "\n", 1);
1336         }
1337
1338         gtk_stext_thaw(text);
1339 }
1340
1341 gboolean textview_search_string(TextView *textview, const gchar *str,
1342                                 gboolean case_sens)
1343 {
1344         GtkSText *text = GTK_STEXT(textview->text);
1345         gint pos;
1346         wchar_t *wcs;
1347         gint len;
1348         gint text_len;
1349         gboolean found = FALSE;
1350
1351         g_return_val_if_fail(str != NULL, FALSE);
1352
1353         wcs = strdup_mbstowcs(str);
1354         g_return_val_if_fail(wcs != NULL, FALSE);
1355         len = wcslen(wcs);
1356         pos = textview->cur_pos;
1357         if (pos < textview->body_pos)
1358                 pos = textview->body_pos;
1359         text_len = gtk_stext_get_length(text);
1360         if (text_len - pos < len) {
1361                 g_free(wcs);
1362                 return FALSE;
1363         }
1364
1365         for (; pos < text_len; pos++) {
1366                 if (text_len - pos < len) break;
1367                 if (gtkut_stext_match_string(text, pos, wcs, len, case_sens)
1368                     == TRUE) {
1369                         gtk_widget_hide(GTK_WIDGET(textview->scrolledwin));
1370                         gtk_editable_set_position(GTK_EDITABLE(text),
1371                                                   pos + len);
1372                         gtk_editable_select_region(GTK_EDITABLE(text),
1373                                                    pos, pos + len);
1374                         gtk_widget_show(GTK_WIDGET(textview->scrolledwin));
1375                         textview_set_position(textview, pos + len);
1376                         found = TRUE;
1377                         break;
1378                 }
1379                 if (text_len - pos == len) break;
1380         }
1381         g_free(wcs);
1382         return found;
1383 }
1384
1385 gboolean textview_search_string_backward(TextView *textview, const gchar *str,
1386                                          gboolean case_sens)
1387 {
1388         GtkSText *text = GTK_STEXT(textview->text);
1389         gint pos;
1390         wchar_t *wcs;
1391         gint len;
1392         gint text_len;
1393         gboolean found = FALSE;
1394
1395         g_return_val_if_fail(str != NULL, FALSE);
1396
1397         wcs = strdup_mbstowcs(str);
1398         g_return_val_if_fail(wcs != NULL, FALSE);
1399         len = wcslen(wcs);
1400         pos = textview->cur_pos;
1401         text_len = gtk_stext_get_length(text);
1402         if (text_len - textview->body_pos < len) {
1403                 g_free(wcs);
1404                 return FALSE;
1405         }
1406         if (pos <= textview->body_pos || text_len - pos < len)
1407                 pos = text_len - len;
1408
1409         for (; pos >= textview->body_pos; pos--) {
1410                 if (gtkut_stext_match_string(text, pos, wcs, len, case_sens)
1411                     == TRUE) {
1412                         gtk_editable_set_position(GTK_EDITABLE(text), pos);
1413                         gtk_editable_select_region(GTK_EDITABLE(text),
1414                                                    pos, pos + len);
1415                         textview_set_position(textview, pos - 1);
1416                         found = TRUE;
1417                         break;
1418                 }
1419                 if (pos == textview->body_pos) break;
1420         }
1421
1422         g_free(wcs);
1423         return found;
1424 }
1425
1426 void textview_scroll_one_line(TextView *textview, gboolean up)
1427 {
1428         GtkSText *text = GTK_STEXT(textview->text);
1429         gfloat upper;
1430
1431         if (prefs_common.enable_smooth_scroll) {
1432                 textview_smooth_scroll_one_line(textview, up);
1433                 return;
1434         }
1435
1436         if (!up) {
1437                 upper = text->vadj->upper - text->vadj->page_size;
1438                 if (text->vadj->value < upper) {
1439                         text->vadj->value +=
1440                                 text->vadj->step_increment * 4;
1441                         text->vadj->value =
1442                                 MIN(text->vadj->value, upper);
1443                         gtk_signal_emit_by_name(GTK_OBJECT(text->vadj),
1444                                                 "value_changed");
1445                 }
1446         } else {
1447                 if (text->vadj->value > 0.0) {
1448                         text->vadj->value -=
1449                                 text->vadj->step_increment * 4;
1450                         text->vadj->value =
1451                                 MAX(text->vadj->value, 0.0);
1452                         gtk_signal_emit_by_name(GTK_OBJECT(text->vadj),
1453                                                 "value_changed");
1454                 }
1455         }
1456 }
1457
1458 gboolean textview_scroll_page(TextView *textview, gboolean up)
1459 {
1460         GtkSText *text = GTK_STEXT(textview->text);
1461         gfloat upper;
1462         gfloat page_incr;
1463
1464         if (prefs_common.enable_smooth_scroll)
1465                 return textview_smooth_scroll_page(textview, up);
1466
1467         if (prefs_common.scroll_halfpage)
1468                 page_incr = text->vadj->page_increment / 2;
1469         else
1470                 page_incr = text->vadj->page_increment;
1471
1472         if (!up) {
1473                 upper = text->vadj->upper - text->vadj->page_size;
1474                 if (text->vadj->value < upper) {
1475                         text->vadj->value += page_incr;
1476                         text->vadj->value = MIN(text->vadj->value, upper);
1477                         gtk_signal_emit_by_name(GTK_OBJECT(text->vadj),
1478                                                 "value_changed");
1479                 } else
1480                         return FALSE;
1481         } else {
1482                 if (text->vadj->value > 0.0) {
1483                         text->vadj->value -= page_incr;
1484                         text->vadj->value = MAX(text->vadj->value, 0.0);
1485                         gtk_signal_emit_by_name(GTK_OBJECT(text->vadj),
1486                                                 "value_changed");
1487                 } else
1488                         return FALSE;
1489         }
1490
1491         return TRUE;
1492 }
1493
1494 static void textview_smooth_scroll_do(TextView *textview,
1495                                       gfloat old_value, gfloat last_value,
1496                                       gint step)
1497 {
1498         GtkSText *text = GTK_STEXT(textview->text);
1499         gint change_value;
1500         gboolean up;
1501         gint i;
1502
1503         if (old_value < last_value) {
1504                 change_value = last_value - old_value;
1505                 up = FALSE;
1506         } else {
1507                 change_value = old_value - last_value;
1508                 up = TRUE;
1509         }
1510
1511         gdk_key_repeat_disable();
1512
1513         for (i = step; i <= change_value; i += step) {
1514                 text->vadj->value = old_value + (up ? -i : i);
1515                 gtk_signal_emit_by_name(GTK_OBJECT(text->vadj),
1516                                         "value_changed");
1517         }
1518
1519         text->vadj->value = last_value;
1520         gtk_signal_emit_by_name(GTK_OBJECT(text->vadj), "value_changed");
1521
1522         gdk_key_repeat_restore();
1523 }
1524
1525 static void textview_smooth_scroll_one_line(TextView *textview, gboolean up)
1526 {
1527         GtkSText *text = GTK_STEXT(textview->text);
1528         gfloat upper;
1529         gfloat old_value;
1530         gfloat last_value;
1531
1532         if (!up) {
1533                 upper = text->vadj->upper - text->vadj->page_size;
1534                 if (text->vadj->value < upper) {
1535                         old_value = text->vadj->value;
1536                         last_value = text->vadj->value +
1537                                 text->vadj->step_increment * 4;
1538                         last_value = MIN(last_value, upper);
1539
1540                         textview_smooth_scroll_do(textview, old_value,
1541                                                   last_value,
1542                                                   prefs_common.scroll_step);
1543                 }
1544         } else {
1545                 if (text->vadj->value > 0.0) {
1546                         old_value = text->vadj->value;
1547                         last_value = text->vadj->value -
1548                                 text->vadj->step_increment * 4;
1549                         last_value = MAX(last_value, 0.0);
1550
1551                         textview_smooth_scroll_do(textview, old_value,
1552                                                   last_value,
1553                                                   prefs_common.scroll_step);
1554                 }
1555         }
1556 }
1557
1558 static gboolean textview_smooth_scroll_page(TextView *textview, gboolean up)
1559 {
1560         GtkSText *text = GTK_STEXT(textview->text);
1561         gfloat upper;
1562         gfloat page_incr;
1563         gfloat old_value;
1564         gfloat last_value;
1565
1566         if (prefs_common.scroll_halfpage)
1567                 page_incr = text->vadj->page_increment / 2;
1568         else
1569                 page_incr = text->vadj->page_increment;
1570
1571         if (!up) {
1572                 upper = text->vadj->upper - text->vadj->page_size;
1573                 if (text->vadj->value < upper) {
1574                         old_value = text->vadj->value;
1575                         last_value = text->vadj->value + page_incr;
1576                         last_value = MIN(last_value, upper);
1577
1578                         textview_smooth_scroll_do(textview, old_value,
1579                                                   last_value,
1580                                                   prefs_common.scroll_step);
1581                 } else
1582                         return FALSE;
1583         } else {
1584                 if (text->vadj->value > 0.0) {
1585                         old_value = text->vadj->value;
1586                         last_value = text->vadj->value - page_incr;
1587                         last_value = MAX(last_value, 0.0);
1588
1589                         textview_smooth_scroll_do(textview, old_value,
1590                                                   last_value,
1591                                                   prefs_common.scroll_step);
1592                 } else
1593                         return FALSE;
1594         }
1595
1596         return TRUE;
1597 }
1598
1599 #define KEY_PRESS_EVENT_STOP() \
1600         if (gtk_signal_n_emissions_by_name \
1601                 (GTK_OBJECT(widget), "key_press_event") > 0) { \
1602                 gtk_signal_emit_stop_by_name(GTK_OBJECT(widget), \
1603                                              "key_press_event"); \
1604         }
1605
1606 static gint textview_key_pressed(GtkWidget *widget, GdkEventKey *event,
1607                                  TextView *textview)
1608 {
1609         SummaryView *summaryview = NULL;
1610         MessageView *messageview = textview->messageview;
1611
1612         if (!event) return FALSE;
1613         if (messageview->mainwin)
1614                 summaryview = messageview->mainwin->summaryview;
1615
1616         switch (event->keyval) {
1617         case GDK_Tab:
1618         case GDK_Home:
1619         case GDK_Left:
1620         case GDK_Up:
1621         case GDK_Right:
1622         case GDK_Down:
1623         case GDK_Page_Up:
1624         case GDK_Page_Down:
1625         case GDK_End:
1626         case GDK_Control_L:
1627         case GDK_Control_R:
1628                 break;
1629         case GDK_space:
1630                 if (summaryview)
1631                         summary_pass_key_press_event(summaryview, event);
1632                 else
1633                         textview_scroll_page(textview, FALSE);
1634                 break;
1635         case GDK_BackSpace:
1636                 textview_scroll_page(textview, TRUE);
1637                 break;
1638         case GDK_Return:
1639                 textview_scroll_one_line(textview,
1640                                          (event->state & GDK_MOD1_MASK) != 0);
1641                 break;
1642         case GDK_n:
1643         case GDK_N:
1644         case GDK_p:
1645         case GDK_P:
1646         case GDK_y:
1647         case GDK_t:
1648         case GDK_l:
1649                 if (messageview->type == MVIEW_MIME) {
1650                         KEY_PRESS_EVENT_STOP();
1651                         mimeview_pass_key_press_event(messageview->mimeview,
1652                                                       event);
1653                         break;
1654                 }
1655                 /* fall through */
1656         default:
1657                 if (summaryview)
1658                         summary_pass_key_press_event(summaryview, event);
1659                 break;
1660         }
1661
1662         return TRUE;
1663 }
1664
1665 static gint show_url_timeout_cb(TextView    *textview ){
1666         if (textview->messageview->mainwin)
1667                 if (textview->show_url_msgid)
1668                         gtk_statusbar_remove(GTK_STATUSBAR(
1669                                 textview->messageview->mainwin->statusbar),
1670                                 textview->messageview->mainwin->folderview_cid,
1671                                 textview->show_url_msgid);
1672                 return FALSE;
1673 }
1674
1675 static gint textview_button_pressed(GtkWidget *widget, GdkEventButton *event,
1676                                     TextView *textview)
1677 {
1678         if (event)
1679                 textview->last_buttonpress = event->type;
1680         return FALSE;
1681 }
1682
1683 static gint textview_button_released(GtkWidget *widget, GdkEventButton *event,
1684                                     TextView *textview)
1685 {
1686         textview->cur_pos =
1687                 gtk_editable_get_position(GTK_EDITABLE(textview->text));
1688
1689         if (event &&
1690             ((event->button == 1)
1691              || event->button == 2 || event->button == 3)) {
1692                 GSList *cur;
1693
1694                 /* double click seems to set the cursor after the current
1695                  * word. The cursor position needs fixing, otherwise the
1696                  * last word of a clickable zone will not work */
1697                 if (event->button == 1 && textview->last_buttonpress == GDK_2BUTTON_PRESS) {
1698                         textview->cur_pos--;
1699                 }
1700
1701                 for (cur = textview->uri_list; cur != NULL; cur = cur->next) {
1702                         RemoteURI *uri = (RemoteURI *)cur->data;
1703
1704                         if (textview->cur_pos >= uri->start &&
1705                             textview->cur_pos <  uri->end) {
1706                                 /* single click: display url in statusbar */
1707                                 if (event->button == 1 && textview->last_buttonpress != GDK_2BUTTON_PRESS) {
1708                                         if (textview->messageview->mainwin) {
1709                                                 if (textview->show_url_msgid) {
1710                                                         gtk_timeout_remove(textview->show_url_timeout_tag);
1711                                                         gtk_statusbar_remove(GTK_STATUSBAR(
1712                                                                 textview->messageview->mainwin->statusbar),
1713                                                                 textview->messageview->mainwin->folderview_cid,
1714                                                                 textview->show_url_msgid);
1715                                                         textview->show_url_msgid = 0;
1716                                                 }
1717                                                 textview->show_url_msgid = gtk_statusbar_push(
1718                                                                 GTK_STATUSBAR(textview->messageview->mainwin->statusbar),
1719                                                                 textview->messageview->mainwin->folderview_cid,
1720                                                                 uri->uri);
1721                                                 textview->show_url_timeout_tag = gtk_timeout_add( 2000, show_url_timeout_cb, textview );
1722                                                 gtkut_widget_wait_for_draw(textview->messageview->mainwin->hbox_stat);
1723                                         }
1724                                 } else
1725                                 if (!g_strncasecmp(uri->uri, "mailto:", 7)) {
1726                                         if (event->button == 3) {
1727                                                 gchar *fromname, *fromaddress;
1728                                                 GdkEventButton tmpev;
1729
1730                                                 /* extract url */
1731                                                 fromaddress = g_strdup(uri->uri + 7);
1732                                                 /* Hiroyuki: please put this function in utils.c! */
1733                                                 fromname = procheader_get_fromname(fromaddress);
1734                                                 extract_address(fromaddress);
1735                                                 g_message("adding from textview %s <%s>", fromname, fromaddress);
1736                                                 /* Add to address book - Match */
1737                                                 addressbook_add_contact( fromname, fromaddress, NULL );
1738
1739                                                 g_free(fromaddress);
1740                                                 g_free(fromname);
1741                                         } else {
1742                                                 PrefsAccount *account = NULL;
1743                                                 FolderItem   *folder_item;
1744
1745                                                 if (textview->messageview && textview->messageview->mainwin
1746                                                 &&  textview->messageview->mainwin->summaryview
1747                                                 &&  textview->messageview->mainwin->summaryview->folder_item) {
1748                                                         folder_item = textview->messageview->mainwin->summaryview->folder_item;
1749                                                         if (folder_item->prefs && folder_item->prefs->enable_default_account)
1750                                                                 account = account_find_from_id(folder_item->prefs->default_account);
1751                                                 }
1752                                                 compose_new_with_recipient
1753                                                         (account, uri->uri + 7);
1754                                         }
1755                                 } else {
1756                                         open_uri(uri->uri,
1757                                                  prefs_common.uri_cmd);
1758                                 }
1759                         }
1760                 }
1761         }
1762         if (event)
1763                 textview->last_buttonpress = event->type;
1764         return FALSE;
1765 }
1766
1767 static void textview_uri_list_remove_all(GSList *uri_list)
1768 {
1769         GSList *cur;
1770
1771         for (cur = uri_list; cur != NULL; cur = cur->next) {
1772                 if (cur->data) {
1773                         g_free(((RemoteURI *)cur->data)->uri);
1774                         g_free(cur->data);
1775                 }
1776         }
1777
1778         g_slist_free(uri_list);
1779 }