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editor.c
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editor.c
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/*
* editor.c - this file is part of Geany, a fast and lightweight IDE
*
* Copyright 2005-2008 Enrico Tröger <enrico(dot)troeger(at)uvena(dot)de>
* Copyright 2006-2008 Nick Treleaven <nick(dot)treleaven(at)btinternet(dot)com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id$
*/
/*
* Callbacks for the Scintilla widget (ScintillaObject).
* Most important is the sci-notify callback, handled in on_editor_notification().
* This includes auto-indentation, comments, auto-completion, calltips, etc.
* Also some general Scintilla-related functions.
*/
#include <ctype.h>
#include <string.h>
#include <gdk/gdkkeysyms.h>
#include "SciLexer.h"
#include "geany.h"
#include "support.h"
#include "editor.h"
#include "document.h"
#include "documentprivate.h"
#include "filetypes.h"
#include "sciwrappers.h"
#include "ui_utils.h"
#include "utils.h"
#include "dialogs.h"
#include "symbols.h"
#include "callbacks.h"
#include "geanyobject.h"
/* holds word under the mouse or keyboard cursor */
static gchar current_word[GEANY_MAX_WORD_LENGTH];
/* Initialised in keyfile.c. */
GeanyEditorPrefs editor_prefs;
EditorInfo editor_info = {current_word, -1};
static struct
{
gchar *text;
gboolean set;
gchar *last_word;
guint tag_index;
gint pos;
ScintillaObject *sci;
} calltip = {NULL, FALSE, NULL, 0, 0, NULL};
static gchar indent[100];
static void on_new_line_added(GeanyEditor *editor);
static gboolean handle_xml(GeanyEditor *editor, gchar ch);
static void get_indent(GeanyEditor *editor, gint pos, gboolean use_this_line);
static void auto_multiline(GeanyEditor *editor, gint pos);
static gboolean is_comment(gint lexer, gint prev_style, gint style);
static void auto_close_bracket(ScintillaObject *sci, gint pos, gchar c);
static void auto_table(GeanyEditor *editor, gint pos);
void editor_snippets_free()
{
g_hash_table_destroy(editor_prefs.snippets);
}
void editor_snippets_init(void)
{
gsize i, j, len = 0, len_keys = 0;
gchar *sysconfigfile, *userconfigfile;
gchar **groups_user, **groups_sys;
gchar **keys_user, **keys_sys;
gchar *value;
GKeyFile *sysconfig = g_key_file_new();
GKeyFile *userconfig = g_key_file_new();
GHashTable *tmp;
sysconfigfile = g_strconcat(app->datadir, G_DIR_SEPARATOR_S, "snippets.conf", NULL);
userconfigfile = g_strconcat(app->configdir, G_DIR_SEPARATOR_S, "snippets.conf", NULL);
/* check for old autocomplete.conf files (backwards compatibility) */
if (! g_file_test(userconfigfile, G_FILE_TEST_IS_REGULAR | G_FILE_TEST_IS_SYMLINK))
setptr(userconfigfile,
g_strconcat(app->configdir, G_DIR_SEPARATOR_S, "autocomplete.conf", NULL));
/* load the actual config files */
g_key_file_load_from_file(sysconfig, sysconfigfile, G_KEY_FILE_NONE, NULL);
g_key_file_load_from_file(userconfig, userconfigfile, G_KEY_FILE_NONE, NULL);
/* keys are strings, values are GHashTables, so use g_free and g_hash_table_destroy */
editor_prefs.snippets =
g_hash_table_new_full(g_str_hash, g_str_equal, g_free, (GDestroyNotify) g_hash_table_destroy);
/* first read all globally defined auto completions */
groups_sys = g_key_file_get_groups(sysconfig, &len);
for (i = 0; i < len; i++)
{
keys_sys = g_key_file_get_keys(sysconfig, groups_sys[i], &len_keys, NULL);
/* create new hash table for the read section (=> filetype) */
tmp = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, g_free);
g_hash_table_insert(editor_prefs.snippets, g_strdup(groups_sys[i]), tmp);
for (j = 0; j < len_keys; j++)
{
g_hash_table_insert(tmp, g_strdup(keys_sys[j]),
utils_get_setting_string(sysconfig, groups_sys[i], keys_sys[j], ""));
}
g_strfreev(keys_sys);
}
/* now read defined completions in user's configuration directory and add / replace them */
groups_user = g_key_file_get_groups(userconfig, &len);
for (i = 0; i < len; i++)
{
keys_user = g_key_file_get_keys(userconfig, groups_user[i], &len_keys, NULL);
tmp = g_hash_table_lookup(editor_prefs.snippets, groups_user[i]);
if (tmp == NULL)
{ /* new key found, create hash table */
tmp = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, g_free);
g_hash_table_insert(editor_prefs.snippets, g_strdup(groups_user[i]), tmp);
}
for (j = 0; j < len_keys; j++)
{
value = g_hash_table_lookup(tmp, keys_user[j]);
if (value == NULL)
{ /* value = NULL means the key doesn't yet exist, so insert */
g_hash_table_insert(tmp, g_strdup(keys_user[j]),
utils_get_setting_string(userconfig, groups_user[i], keys_user[j], ""));
}
else
{ /* old key and value will be freed by destroy function (g_free) */
g_hash_table_replace(tmp, g_strdup(keys_user[j]),
utils_get_setting_string(userconfig, groups_user[i], keys_user[j], ""));
}
}
g_strfreev(keys_user);
}
g_free(sysconfigfile);
g_free(userconfigfile);
g_strfreev(groups_sys);
g_strfreev(groups_user);
g_key_file_free(sysconfig);
g_key_file_free(userconfig);
}
/* calls the edit popup menu in the editor */
static gboolean
on_editor_button_press_event (GtkWidget *widget,
GdkEventButton *event,
gpointer user_data)
{
GeanyDocument *doc = user_data;
if (doc == NULL)
return FALSE;
editor_info.click_pos = sci_get_position_from_xy(doc->editor->scintilla, (gint)event->x, (gint)event->y, FALSE);
if (event->button == 1)
{
if (GDK_BUTTON_PRESS == event->type && editor_prefs.disable_dnd)
{
gint ss = sci_get_selection_start(doc->editor->scintilla);
sci_set_selection_end(doc->editor->scintilla, ss);
}
return document_check_disk_status(doc, FALSE);
}
if (event->button == 3)
{
editor_find_current_word(doc->editor->scintilla, editor_info.click_pos,
current_word, sizeof current_word, NULL);
ui_update_popup_goto_items((current_word[0] != '\0') ? TRUE : FALSE);
ui_update_popup_copy_items(doc);
ui_update_insert_include_item(doc, 0);
if (geany_object)
{
g_signal_emit_by_name(geany_object, "update-editor-menu",
current_word, editor_info.click_pos, doc);
}
gtk_menu_popup(GTK_MENU(main_widgets.editor_menu),
NULL, NULL, NULL, NULL, event->button, event->time);
return TRUE;
}
return FALSE;
}
typedef struct SCNotification SCNotification;
static void fold_symbol_click(ScintillaObject *sci, SCNotification *nt)
{
gint line = SSM(sci, SCI_LINEFROMPOSITION, nt->position, 0);
SSM(sci, SCI_TOGGLEFOLD, line, 0);
/* extra toggling of child fold points
* use when editor_prefs.unfold_all_children is set and Shift is NOT pressed or when
* editor_prefs.unfold_all_children is NOT set but Shift is pressed */
if ((editor_prefs.unfold_all_children && ! (nt->modifiers & SCMOD_SHIFT)) ||
(! editor_prefs.unfold_all_children && (nt->modifiers & SCMOD_SHIFT)))
{
gint last_line = SSM(sci, SCI_GETLASTCHILD, line, -1);
gint i;
if (SSM(sci, SCI_GETLINEVISIBLE, line + 1, 0))
{ /* unfold all children of the current fold point */
for (i = line; i < last_line; i++)
{
if (! SSM(sci, SCI_GETLINEVISIBLE, i, 0))
{
SSM(sci, SCI_TOGGLEFOLD, SSM(sci, SCI_GETFOLDPARENT, i, 0), 0);
}
}
}
else
{ /* fold all children of the current fold point */
for (i = line; i < last_line; i++)
{
gint level = sci_get_fold_level(sci, i);
if (level & SC_FOLDLEVELHEADERFLAG)
{
if (SSM(sci, SCI_GETFOLDEXPANDED, i, 0))
SSM(sci, SCI_TOGGLEFOLD, i, 0);
}
}
}
}
}
static void on_margin_click(ScintillaObject *sci, SCNotification *nt)
{
/* left click to marker margin marks the line */
if (nt->margin == 1)
{
gint line = sci_get_line_from_position(sci, nt->position);
gboolean set = sci_is_marker_set_at_line(sci, line, 1);
/*sci_marker_delete_all(doc->editor->scintilla, 1);*/
sci_set_marker_at_line(sci, line, ! set, 1); /* toggle the marker */
}
/* left click on the folding margin to toggle folding state of current line */
else if (nt->margin == 2 && editor_prefs.folding)
{
fold_symbol_click(sci, nt);
}
}
static void on_update_ui(GeanyEditor *editor, G_GNUC_UNUSED SCNotification *nt)
{
ScintillaObject *sci = editor->scintilla;
gint pos = sci_get_current_position(sci);
/* undo / redo menu update */
ui_update_popup_reundo_items(editor->document);
/* brace highlighting */
editor_highlight_braces(sci, pos);
ui_update_statusbar(editor->document, pos);
/* Visible lines are only laid out accurately once [SCN_UPDATEUI] is sent,
* so we need to only call sci_scroll_to_line here, because the document
* may have line wrapping and folding enabled.
* http://scintilla.sourceforge.net/ScintillaDoc.html#LineWrapping */
if (editor->scroll_percent > 0.0F)
{
editor_scroll_to_line(sci, -1, editor->scroll_percent);
editor->scroll_percent = -1.0F; /* disable further scrolling */
}
#if 0
/** experimental code for inverting selections */
{
gint i;
for (i = SSM(sci, SCI_GETSELECTIONSTART, 0, 0); i < SSM(sci, SCI_GETSELECTIONEND, 0, 0); i++)
{
/* need to get colour from getstyleat(), but how? */
SSM(sci, SCI_STYLESETFORE, STYLE_DEFAULT, 0);
SSM(sci, SCI_STYLESETBACK, STYLE_DEFAULT, 0);
}
sci_get_style_at(sci, pos);
}
#endif
}
static void check_line_breaking(GeanyEditor *editor, gint pos, gchar c)
{
ScintillaObject *sci = editor->scintilla;
gint line, lstart;
if (!editor->line_breaking)
return;
if (c == GDK_space)
pos--; /* Look for previous space, not the new one */
line = sci_get_current_line(sci);
lstart = sci_get_position_from_line(sci, line);
if (pos - lstart < editor_prefs.line_break_column)
return;
/* look for the last space before line_break_column */
pos = MIN(pos, lstart + editor_prefs.line_break_column);
while (pos > lstart)
{
c = sci_get_char_at(sci, --pos);
if (c == GDK_space)
{
gint col, len, diff;
const gchar *eol = editor_get_eol_char(editor->document);
/* break the line after the space */
sci_insert_text(sci, pos + 1, eol);
line++;
/* remember distance from end of line (we use column position in case
* the previous line gets altered, such as removing trailing spaces). */
pos = sci_get_current_position(sci);
len = sci_get_line_length(sci, line);
col = sci_get_col_from_position(sci, pos);
diff = len - col;
/* set position as if user had pressed return */
pos = sci_get_position_from_line(sci, line);
sci_set_current_position(sci, pos, FALSE);
/* add indentation, comment multilines, etc */
on_new_line_added(editor);
/* correct cursor position (might not be at line end) */
pos = sci_get_position_from_line(sci, line);
pos += sci_get_line_length(sci, line) - diff;
sci_set_current_position(sci, pos, FALSE);
return;
}
}
}
static void on_char_added(GeanyEditor *editor, SCNotification *nt)
{
ScintillaObject *sci = editor->scintilla;
gint pos = sci_get_current_position(sci);
switch (nt->ch)
{
case '\r':
{ /* simple indentation (only for CR format) */
if (sci_get_eol_mode(sci) == SC_EOL_CR)
on_new_line_added(editor);
break;
}
case '\n':
{ /* simple indentation (for CR/LF and LF format) */
on_new_line_added(editor);
break;
}
case '>':
case '/':
{ /* close xml-tags */
handle_xml(editor, nt->ch);
break;
}
case '(':
{ /* show calltips */
editor_show_calltip(editor->document, --pos);
break;
}
case ')':
{ /* hide calltips */
if (SSM(sci, SCI_CALLTIPACTIVE, 0, 0))
{
SSM(sci, SCI_CALLTIPCANCEL, 0, 0);
}
g_free(calltip.text);
calltip.text = NULL;
calltip.pos = 0;
calltip.sci = NULL;
calltip.set = FALSE;
break;
}
case '[':
case '{':
{ /* Tex auto-closing */
if (sci_get_lexer(sci) == SCLEX_LATEX)
{
auto_close_bracket(sci, pos, nt->ch); /* Tex auto-closing */
editor_show_calltip(editor->document, --pos);
}
break;
}
case '}':
{ /* closing bracket handling */
if (editor->auto_indent)
editor_close_block(editor->document, pos - 1);
break;
}
default:
editor_start_auto_complete(editor->document, pos, FALSE);
}
check_line_breaking(editor, pos, nt->ch);
}
/* expand() and fold_changed() are copied from SciTE (thanks) to fix #1923350. */
static void expand(ScintillaObject *sci, gint *line, gboolean doExpand,
gboolean force, gint visLevels, gint level)
{
gint lineMaxSubord = SSM(sci, SCI_GETLASTCHILD, *line, level & SC_FOLDLEVELNUMBERMASK);
gint levelLine = level;
(*line)++;
while (*line <= lineMaxSubord)
{
if (force)
{
if (visLevels > 0)
SSM(sci, SCI_SHOWLINES, *line, *line);
else
SSM(sci, SCI_HIDELINES, *line, *line);
}
else
{
if (doExpand)
SSM(sci, SCI_SHOWLINES, *line, *line);
}
if (levelLine == -1)
levelLine = SSM(sci, SCI_GETFOLDLEVEL, *line, 0);
if (levelLine & SC_FOLDLEVELHEADERFLAG)
{
if (force)
{
if (visLevels > 1)
SSM(sci, SCI_SETFOLDEXPANDED, *line, 1);
else
SSM(sci, SCI_SETFOLDEXPANDED, *line, 0);
expand(sci, line, doExpand, force, visLevels - 1, -1);
}
else
{
if (doExpand)
{
if (!SSM(sci, SCI_GETFOLDEXPANDED, *line, 0))
SSM(sci, SCI_SETFOLDEXPANDED, *line, 1);
expand(sci, line, TRUE, force, visLevels - 1, -1);
}
else
{
expand(sci, line, FALSE, force, visLevels - 1, -1);
}
}
}
else
{
(*line)++;
}
}
}
static void fold_changed(ScintillaObject *sci, gint line, gint levelNow, gint levelPrev)
{
if (levelNow & SC_FOLDLEVELHEADERFLAG)
{
if (! (levelPrev & SC_FOLDLEVELHEADERFLAG))
{
/* Adding a fold point */
SSM(sci, SCI_SETFOLDEXPANDED, line, 1);
expand(sci, &line, TRUE, FALSE, 0, levelPrev);
}
}
else if (levelPrev & SC_FOLDLEVELHEADERFLAG)
{
if (! SSM(sci, SCI_GETFOLDEXPANDED, line, 0))
{ /* Removing the fold from one that has been contracted so should expand
* otherwise lines are left invisible with no way to make them visible */
SSM(sci, SCI_SETFOLDEXPANDED, line, 1);
expand(sci, &line, TRUE, FALSE, 0, levelPrev);
}
}
if (! (levelNow & SC_FOLDLEVELWHITEFLAG) &&
((levelPrev & SC_FOLDLEVELNUMBERMASK) > (levelNow & SC_FOLDLEVELNUMBERMASK)))
{
/* See if should still be hidden */
gint parentLine = SSM(sci, SCI_GETFOLDPARENT, line, 0);
if (parentLine < 0)
{
SSM(sci, SCI_SHOWLINES, line, line);
}
else if (SSM(sci, SCI_GETFOLDEXPANDED, parentLine, 0) &&
SSM(sci, SCI_GETLINEVISIBLE, parentLine, 0))
{
SSM(sci, SCI_SHOWLINES, line, line);
}
}
}
static void ensure_range_visible(ScintillaObject *sci, gint posStart, gint posEnd,
gboolean enforcePolicy)
{
gint lineStart = SSM(sci, SCI_LINEFROMPOSITION, MIN(posStart, posEnd), 0);
gint lineEnd = SSM(sci, SCI_LINEFROMPOSITION, MAX(posStart, posEnd), 0);
gint line;
for (line = lineStart; line <= lineEnd; line++)
{
SSM(sci, enforcePolicy ? SCI_ENSUREVISIBLEENFORCEPOLICY : SCI_ENSUREVISIBLE, line, 0);
}
}
static gboolean reshow_calltip(gpointer data)
{
SCNotification *nt = data;
g_return_val_if_fail(calltip.sci != NULL, FALSE);
SSM(calltip.sci, SCI_CALLTIPCANCEL, 0, 0);
/* we use the position where the calltip was previously started as SCI_GETCURRENTPOS
* may be completely wrong in case the user cancelled the auto completion with the mouse */
SSM(calltip.sci, SCI_CALLTIPSHOW, calltip.pos, (sptr_t) calltip.text);
/* now autocompletion has been cancelled by SCI_CALLTIPSHOW, so do it manually */
if (nt->nmhdr.code == SCN_AUTOCSELECTION)
{
gint pos = SSM(calltip.sci, SCI_GETCURRENTPOS, 0, 0);
sci_set_selection_start(calltip.sci, nt->lParam);
sci_set_selection_end(calltip.sci, pos);
sci_replace_sel(calltip.sci, ""); /* clear root of word */
SSM(calltip.sci, SCI_INSERTTEXT, nt->lParam, (sptr_t) nt->text);
sci_goto_pos(calltip.sci, nt->lParam + strlen(nt->text), FALSE);
}
return FALSE;
}
/* callback func called by all editors when a signal arises */
void on_editor_notification(GtkWidget *widget, gint scn, gpointer lscn, gpointer user_data)
{
SCNotification *nt;
ScintillaObject *sci;
GeanyDocument *doc = user_data;
GeanyEditor *editor;
editor = doc->editor;
sci = editor->scintilla;
nt = lscn;
switch (nt->nmhdr.code)
{
case SCN_SAVEPOINTLEFT:
{
document_set_text_changed(doc, TRUE);
break;
}
case SCN_SAVEPOINTREACHED:
{
document_set_text_changed(doc, FALSE);
break;
}
case SCN_MODIFYATTEMPTRO:
{
utils_beep();
break;
}
case SCN_MARGINCLICK:
on_margin_click(sci, nt);
break;
case SCN_UPDATEUI:
on_update_ui(editor, nt);
break;
case SCN_MODIFIED:
{
if (nt->modificationType & SC_STARTACTION && ! ignore_callback)
{
/* get notified about undo changes */
document_undo_add(doc, UNDO_SCINTILLA, NULL);
}
if (editor_prefs.folding && (nt->modificationType & SC_MOD_CHANGEFOLD) != 0)
{
/* handle special fold cases, e.g. #1923350 */
fold_changed(sci, nt->line, nt->foldLevelNow, nt->foldLevelPrev);
}
break;
}
case SCN_CHARADDED:
on_char_added(editor, nt);
break;
case SCN_USERLISTSELECTION:
{
if (nt->listType == 1)
{
gint pos = SSM(sci, SCI_GETCURRENTPOS, 0, 0);
SSM(sci, SCI_INSERTTEXT, pos, (sptr_t) nt->text);
}
else if (nt->listType == 2)
{
gint start, pos = SSM(sci, SCI_GETCURRENTPOS, 0, 0);
start = pos;
while (start > 0 && sci_get_char_at(sci, --start) != '&') ;
SSM(sci, SCI_INSERTTEXT, pos - 1, (sptr_t) nt->text);
}
break;
}
case SCN_AUTOCCANCELLED:
case SCN_AUTOCSELECTION:
{
/* now that autocomplete is finishing or was cancelled, reshow calltips
* if they were showing */
if (calltip.set)
{
/* delay the reshow of the calltip window to make sure it is actually displayed,
* without it might be not visible on SCN_AUTOCCANCEL */
/* TODO g_idle_add() seems to be not enough, only with a timeout it works stable */
g_timeout_add(50, reshow_calltip, nt);
}
break;
}
#ifdef GEANY_DEBUG
case SCN_STYLENEEDED:
{
geany_debug("style");
break;
}
#endif
case SCN_NEEDSHOWN:
{
ensure_range_visible(sci, nt->position, nt->position + nt->length, FALSE);
break;
}
case SCN_URIDROPPED:
{
if (nt->text != NULL)
{
document_open_file_list(nt->text, -1);
}
break;
}
case SCN_CALLTIPCLICK:
{
if (nt->position > 0)
{
switch (nt->position)
{
case 1: /* up arrow */
if (calltip.tag_index > 0)
calltip.tag_index--;
break;
case 2: calltip.tag_index++; break; /* down arrow */
}
editor_show_calltip(doc, -1);
}
break;
}
}
}
/* Returns a string containing width chars of whitespace, filled with simple space
* characters or with the right number of tab characters, according to the
* use_tabs setting. (Result is filled with tabs *and* spaces if width isn't a multiple of
* editor_prefs.tab_width). */
static gchar *
get_whitespace(gint width, gboolean use_tabs)
{
gchar *str;
g_return_val_if_fail(width > 0, NULL);
if (use_tabs)
{ /* first fill text with tabs and fill the rest with spaces */
gint tabs = width / editor_prefs.tab_width;
gint spaces = width % editor_prefs.tab_width;
gint len = tabs + spaces;
str = g_malloc(len + 1);
memset(str, '\t', tabs);
memset(str + tabs, ' ', spaces);
str[len] = '\0';
}
else
str = g_strnfill(width, ' ');
return str;
}
static void check_python_indent(GeanyEditor *editor, gint pos)
{
ScintillaObject *sci = editor->scintilla;
gint last_char = pos - editor_get_eol_char_len(editor->document) - 1;
/* add extra indentation for Python after colon */
if (sci_get_char_at(sci, last_char) == ':' &&
sci_get_style_at(sci, last_char) == SCE_P_OPERATOR)
{
/* creates and inserts one tabulator sign or
* whitespace of the amount of the tab width */
gchar *text = get_whitespace(editor_prefs.tab_width, editor->use_tabs);
sci_add_text(sci, text);
g_free(text);
}
}
static void on_new_line_added(GeanyEditor *editor)
{
ScintillaObject *sci = editor->scintilla;
gint pos = sci_get_current_position(sci);
gint line = sci_get_current_line(sci);
/* simple indentation */
if (editor->auto_indent)
{
get_indent(editor, pos, FALSE);
sci_add_text(sci, indent);
if (editor_prefs.indent_mode > INDENT_BASIC &&
FILETYPE_ID(editor->document->file_type) == GEANY_FILETYPES_PYTHON)
check_python_indent(editor, pos);
}
if (editor_prefs.auto_continue_multiline)
{ /* " * " auto completion in multiline C/C++/D/Java comments */
auto_multiline(editor, pos);
}
if (editor_prefs.complete_snippets)
{
editor_auto_latex(editor->document, pos);
}
if (editor_prefs.newline_strip)
{ /* strip the trailing spaces on the previous line */
editor_strip_line_trailing_spaces(editor->document, line - 1);
}
}
static gboolean lexer_has_braces(ScintillaObject *sci)
{
gint lexer = SSM(sci, SCI_GETLEXER, 0, 0);
switch (lexer)
{
case SCLEX_CPP:
case SCLEX_D:
case SCLEX_HTML: /* for PHP & JS */
case SCLEX_PASCAL: /* for multiline comments? */
case SCLEX_BASH:
case SCLEX_PERL:
case SCLEX_TCL:
return TRUE;
default:
return FALSE;
}
}
/* in place indentation of one tab or equivalent spaces */
static void do_indent(gchar *buf, gsize len, guint *idx, gboolean use_tabs)
{
guint j = *idx;
if (use_tabs)
{
if (j < len - 1) /* leave room for a \0 terminator. */
buf[j++] = '\t';
}
else
{ /* insert as many spaces as a tab would take */
guint k;
for (k = 0; k < (guint) editor_prefs.tab_width && k < len - 1; k++)
buf[j++] = ' ';
}
*idx = j;
}
/* "use_this_line" to auto-indent only if it is a real new line
* and ignore the case of editor_close_block */
static void get_indent(GeanyEditor *editor, gint pos, gboolean use_this_line)
{
ScintillaObject *sci = editor->scintilla;
guint i, len, j = 0;
gint prev_line;
gchar *linebuf;
prev_line = sci_get_line_from_position(sci, pos);
if (! use_this_line)
prev_line--;
len = sci_get_line_length(sci, prev_line);
linebuf = sci_get_line(sci, prev_line);
for (i = 0; i < len && j <= (sizeof(indent) - 1); i++)
{
if (linebuf[i] == ' ' || linebuf[i] == '\t') /* simple indentation */
indent[j++] = linebuf[i];
else if (editor_prefs.indent_mode <= INDENT_BASIC)
break;
else if (use_this_line)
break;
else /* editor_close_block */
{
if (! lexer_has_braces(sci))
break;
/* i == (len - 1) prevents wrong indentation after lines like
* " { return bless({}, shift); }" (Perl) */
if (linebuf[i] == '{' && i == (len - 1))
{
do_indent(indent, sizeof(indent), &j, editor->use_tabs);
break;
}
else
{
gint k = len - 1;
while (k > 0 && isspace(linebuf[k])) k--;
/* if last non-whitespace character is a { increase indentation by a tab
* e.g. for (...) { */
if (linebuf[k] == '{')
{
do_indent(indent, sizeof(indent), &j, editor->use_tabs);
}
break;
}
}
}
indent[j] = '\0';
g_free(linebuf);
}
static void auto_close_bracket(ScintillaObject *sci, gint pos, gchar c)
{
if (! editor_prefs.complete_snippets || SSM(sci, SCI_GETLEXER, 0, 0) != SCLEX_LATEX)
return;
if (c == '[')
{
sci_add_text(sci, "]");
}
else if (c == '{')
{
sci_add_text(sci, "}");
}
sci_set_current_position(sci, pos, TRUE);
}
/* Finds a corresponding matching brace to the given pos
* (this is taken from Scintilla Editor.cxx,
* fit to work with editor_close_block) */
static gint brace_match(ScintillaObject *sci, gint pos)
{
gchar chBrace = sci_get_char_at(sci, pos);
gchar chSeek = utils_brace_opposite(chBrace);
gchar chAtPos;
gint direction = -1;
gint styBrace;
gint depth = 1;
gint styAtPos;
styBrace = sci_get_style_at(sci, pos);
if (utils_is_opening_brace(chBrace, editor_prefs.brace_match_ltgt))
direction = 1;
pos = pos + direction;
while ((pos >= 0) && (pos < sci_get_length(sci)))
{
chAtPos = sci_get_char_at(sci, pos - 1);
styAtPos = sci_get_style_at(sci, pos);
if ((pos > sci_get_end_styled(sci)) || (styAtPos == styBrace))
{
if (chAtPos == chBrace)
depth++;
if (chAtPos == chSeek)
depth--;
if (depth == 0)
return pos;
}
pos = pos + direction;
}
return -1;
}
/* Called after typing '}'. */
void editor_close_block(GeanyDocument *doc, gint pos)
{
gint x = 0, cnt = 0;
gint line, line_len, eol_char_len;
gchar *text, *line_buf;
ScintillaObject *sci;
gint line_indent, last_indent;
if (editor_prefs.indent_mode < INDENT_CURRENTCHARS)
return;
if (doc == NULL || doc->file_type == NULL)
return;
sci = doc->editor->scintilla;
if (! lexer_has_braces(sci))
return;
line = sci_get_line_from_position(sci, pos);
line_len = sci_get_line_length(sci, line);
/* set eol_char_len to 0 if on last line, because there is no EOL char */
eol_char_len = (line == (SSM(sci, SCI_GETLINECOUNT, 0, 0) - 1)) ? 0 :
editor_get_eol_char_len(document_find_by_sci(sci));
/* check that the line is empty, to not kill text in the line */
line_buf = sci_get_line(sci, line);
line_buf[line_len - eol_char_len] = '\0';
while (x < (line_len - eol_char_len))
{
if (isspace(line_buf[x])) cnt++;
x++;
}
g_free(line_buf);
if ((line_len - eol_char_len - 1) != cnt)
return;
if (editor_prefs.indent_mode == INDENT_MATCHBRACES)
{
gint start_brace = brace_match(sci, pos);
if (start_brace >= 0)
{
gint line_start;
get_indent(doc->editor, start_brace, TRUE);
text = g_strconcat(indent, "}", NULL);
line_start = sci_get_position_from_line(sci, line);
sci_set_anchor(sci, line_start);
SSM(sci, SCI_REPLACESEL, 0, (sptr_t) text);
g_free(text);
return;
}
/* fall through - unmatched brace (possibly because of TCL, PHP lexer bugs) */
}
/* INDENT_CURRENTCHARS */
line_indent = sci_get_line_indentation(sci, line);
last_indent = sci_get_line_indentation(sci, line - 1);
if (line_indent < last_indent)
return;
line_indent -= editor_prefs.tab_width;
line_indent = MAX(0, line_indent);
sci_set_line_indentation(sci, line, line_indent);
}
/* Reads the word at given cursor position and writes it into the given buffer. The buffer will be