Implementation of the meta-[cult] (capitalize words, upcase word, downcase word, transpose words) key-bindings from the TODO by Peder Stray

git-svn-id: http://svn.irssi.org/repos/irssi/trunk@3963 dbcabf3a-b0e7-0310-adc4-f8d773084564

TODO

@@ -349,8 +349,6 @@
     - /BIND -deletes should be saved in config
     - ^W (and some others) don't update cut buffer.
     - default binds: M-d, M-y
-    - capitalize-word (meta-c), downcase-word (meta-l),
-      transpose-words (meta-t), upcase-word (meta-u)                          
     - /PASSWORD command that asks you to type the password to entry line and
       would hide it with asterisks, good if people spy on you :)
     - ^R-like history search

docs/help/in/bind.in

@@ -93,6 +93,10 @@ Command can be one of:
   refresh_screen
   yank_from_cutbuffer - "Undelete" line
   transpose_characters - Swap current and previous character
+  transpose_words - Swap current and previous word
+  capitalize_word - Capitalize word from current position
+  downcase_word - Downcase word from current position
+  upcase_word - Upcase word from current position
   escape_char - Insert the next character exactly as-is to input line
   insert_text - Insert data to entry line, data may contain $variables.
   stop_irc - Send SIGSTOP to client (^Z)

src/fe-text/gui-entry.c

@@ -576,6 +576,123 @@ void gui_entry_transpose_chars(GUI_ENTRY_REC *entry)
 	gui_entry_draw(entry);
 }
 
+void gui_entry_transpose_words(GUI_ENTRY_REC *entry)
+{
+	int spos1, epos1, spos2, epos2;
+
+	/* find last position */
+	epos2 = entry->pos;
+	while (epos2 < entry->text_len && !i_isalnum(entry->text[epos2]))
+		epos2++;
+	while (epos2 < entry->text_len &&  i_isalnum(entry->text[epos2]))
+		epos2++;
+
+	/* find other position */
+	spos2 = epos2;
+	while (spos2 > 0 && !i_isalnum(entry->text[spos2-1]))
+		spos2--;
+	while (spos2 > 0 &&  i_isalnum(entry->text[spos2-1]))
+		spos2--;
+
+	epos1 = spos2;
+	while (epos1 > 0 && !i_isalnum(entry->text[epos1-1]))
+		epos1--;
+
+	spos1 = epos1;
+	while (spos1 > 0 && i_isalnum(entry->text[spos1-1]))
+		spos1--;
+
+	/* do wordswap if any found */
+	if (spos1 < epos1 && epos1 < spos2 && spos2 < epos2) {
+		unichar *first, *sep, *second;
+		int i;
+
+		first  = (unichar *) g_malloc( (epos1 - spos1) * sizeof(unichar) );
+		sep    = (unichar *) g_malloc( (spos2 - epos1) * sizeof(unichar) );
+		second = (unichar *) g_malloc( (epos2 - spos2) * sizeof(unichar) );
+
+		for (i = spos1; i < epos1; i++)
+			first[i-spos1] = entry->text[i];
+		for (i = epos1; i < spos2; i++)
+			sep[i-epos1] = entry->text[i];
+		for (i = spos2; i < epos2; i++)
+			second[i-spos2] = entry->text[i];
+
+		entry->pos = spos1;
+		for (i = 0; i < epos2-spos2; i++)
+			entry->text[entry->pos++] = second[i];
+		for (i = 0; i < spos2-epos1; i++)
+			entry->text[entry->pos++] = sep[i];
+		for (i = 0; i < epos1-spos1; i++)
+			entry->text[entry->pos++] = first[i];
+
+		g_free(first);
+		g_free(sep);
+		g_free(second);
+
+	}
+	
+	gui_entry_redraw_from(entry, spos1);
+	gui_entry_fix_cursor(entry);
+	gui_entry_draw(entry);
+}
+
+void gui_entry_capitalize_word(GUI_ENTRY_REC *entry)
+{
+	int pos = entry->pos;
+	while (pos < entry->text_len && !g_unichar_isalnum(entry->text[pos]))
+		pos++;
+
+	if (pos < entry->text_len) {
+		entry->text[pos] = g_unichar_toupper(entry->text[pos]);
+		pos++;
+	}
+
+	while (pos < entry->text_len && g_unichar_isalnum(entry->text[pos])) {
+		entry->text[pos] = g_unichar_tolower(entry->text[pos]);
+		pos++;
+	}
+
+	gui_entry_redraw_from(entry, entry->pos);
+	entry->pos = pos;
+	gui_entry_fix_cursor(entry);
+	gui_entry_draw(entry);
+}
+
+void gui_entry_downcase_word(GUI_ENTRY_REC *entry)
+{
+	int pos = entry->pos;
+	while (pos < entry->text_len && !g_unichar_isalnum(entry->text[pos]))
+		pos++;
+
+	while (pos < entry->text_len && g_unichar_isalnum(entry->text[pos])) {
+		entry->text[pos] = g_unichar_tolower(entry->text[pos]);
+		pos++;
+	}
+
+	gui_entry_redraw_from(entry, entry->pos);
+	entry->pos = pos;
+	gui_entry_fix_cursor(entry);
+	gui_entry_draw(entry);
+}
+
+void gui_entry_upcase_word(GUI_ENTRY_REC *entry)
+{
+	int pos = entry->pos;
+	while (pos < entry->text_len && !g_unichar_isalnum(entry->text[pos]))
+		pos++;
+
+	while (pos < entry->text_len && g_unichar_isalnum(entry->text[pos])) {
+		entry->text[pos] = g_unichar_toupper(entry->text[pos]);
+		pos++;
+	}
+
+	gui_entry_redraw_from(entry, entry->pos);
+	entry->pos = pos;
+	gui_entry_fix_cursor(entry);
+	gui_entry_draw(entry);
+}
+
 int gui_entry_get_pos(GUI_ENTRY_REC *entry)
 {
         g_return_val_if_fail(entry != NULL, 0);

src/fe-text/gui-entry.h

@@ -45,6 +45,11 @@ void gui_entry_erase_word(GUI_ENTRY_REC *entry, int to_space);
 void gui_entry_erase_next_word(GUI_ENTRY_REC *entry, int to_space);
 
 void gui_entry_transpose_chars(GUI_ENTRY_REC *entry);
+void gui_entry_transpose_words(GUI_ENTRY_REC *entry);
+
+void gui_entry_capitalize_word(GUI_ENTRY_REC *entry);
+void gui_entry_downcase_word(GUI_ENTRY_REC *entry);
+void gui_entry_upcase_word(GUI_ENTRY_REC *entry);
 
 int gui_entry_get_pos(GUI_ENTRY_REC *entry);
 void gui_entry_set_pos(GUI_ENTRY_REC *entry, int pos);

src/fe-text/gui-readline.c

@@ -668,6 +668,25 @@ static void key_transpose_characters(void)
 	gui_entry_transpose_chars(active_entry);
 }
 
+static void key_transpose_words(void)
+{
+	gui_entry_transpose_words(active_entry);
+}
+
+static void key_capitalize_word(void)
+{
+	gui_entry_capitalize_word(active_entry);
+}
+
+static void key_downcase_word(void)
+{
+	gui_entry_downcase_word(active_entry);
+}
+static void key_upcase_word(void)
+{
+	gui_entry_upcase_word(active_entry);
+}
+
 static void key_delete_character(void)
 {
 	if (gui_entry_get_pos(active_entry) < active_entry->text_len) {
@@ -1095,6 +1114,10 @@ void gui_readline_init(void)
 	key_bind("erase_to_end_of_line", "", "^K", NULL, (SIGNAL_FUNC) key_erase_to_end_of_line);
 	key_bind("yank_from_cutbuffer", "", "^Y", NULL, (SIGNAL_FUNC) key_yank_from_cutbuffer);
 	key_bind("transpose_characters", "Swap current and previous character", "^T", NULL, (SIGNAL_FUNC) key_transpose_characters);
+	key_bind("transpose_words", "Swap current and previous word", NULL, NULL, (SIGNAL_FUNC) key_transpose_words);
+	key_bind("capitalize_word", "Capitalize word", NULL, NULL, (SIGNAL_FUNC) key_capitalize_word);
+	key_bind("downcase_word", "Downcase word", NULL, NULL, (SIGNAL_FUNC) key_downcase_word);
+	key_bind("upcase_word", "Upcase word", NULL, NULL, (SIGNAL_FUNC) key_upcase_word);
 
         /* line transmitting */
 	key_bind("send_line", "Execute the input line", "return", NULL, (SIGNAL_FUNC) key_send_line);
@@ -1177,6 +1200,11 @@ void gui_readline_deinit(void)
 	key_unbind("erase_to_end_of_line", (SIGNAL_FUNC) key_erase_to_end_of_line);
 	key_unbind("yank_from_cutbuffer", (SIGNAL_FUNC) key_yank_from_cutbuffer);
 	key_unbind("transpose_characters", (SIGNAL_FUNC) key_transpose_characters);
+	key_unbind("transpose_words", (SIGNAL_FUNC) key_transpose_words);
+
+	key_unbind("capitalize_word", (SIGNAL_FUNC) key_capitalize_word);
+	key_unbind("downcase_word", (SIGNAL_FUNC) key_downcase_word);
+	key_unbind("upcase_word", (SIGNAL_FUNC) key_upcase_word);
 
 	key_unbind("send_line", (SIGNAL_FUNC) key_send_line);
 	key_unbind("word_completion", (SIGNAL_FUNC) key_word_completion);