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tornavis/source/blender/blenkernel/intern/text.c

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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/blenkernel/intern/text.c
* \ingroup bke
*/
#include <stdlib.h> /* abort */
#include <string.h> /* strstr */
#include <sys/types.h>
#include <sys/stat.h>
#include <wchar.h>
#include <wctype.h>
#include "MEM_guardedalloc.h"
#include "BLI_utildefines.h"
#include "BLI_path_util.h"
#include "BLI_string.h"
#include "BLI_string_cursor_utf8.h"
#include "BLI_string_utf8.h"
#include "BLI_listbase.h"
#include "BLI_fileops.h"
#include "DNA_constraint_types.h"
#include "DNA_controller_types.h"
#include "DNA_actuator_types.h"
#include "DNA_scene_types.h"
#include "DNA_screen_types.h"
#include "DNA_space_types.h"
#include "DNA_text_types.h"
#include "DNA_userdef_types.h"
#include "DNA_object_types.h"
#include "DNA_node_types.h"
#include "DNA_material_types.h"
#include "BKE_depsgraph.h"
#include "BKE_global.h"
#include "BKE_library.h"
#include "BKE_main.h"
#include "BKE_text.h"
#include "BKE_node.h"
#ifdef WITH_PYTHON
#include "BPY_extern.h"
#endif
/*
* How Texts should work
* --
* A text should relate to a file as follows -
* (Text *)->name should be the place where the
* file will or has been saved.
*
* (Text *)->flags has the following bits
* TXT_ISDIRTY - should always be set if the file in mem. differs from
* the file on disk, or if there is no file on disk.
* TXT_ISMEM - should always be set if the Text has not been mapped to
* a file, in which case (Text *)->name may be NULL or garbage.
* TXT_ISEXT - should always be set if the Text is not to be written into
* the .blend
* TXT_ISSCRIPT - should be set if the user has designated the text
* as a script. (NEW: this was unused, but now it is needed by
* space handler script links (see header_view3d.c, for example)
*
* ->>> see also: /makesdna/DNA_text_types.h
*
* Display
* --
* The st->top determines at what line the top of the text is displayed.
* If the user moves the cursor the st containing that cursor should
* be popped ... other st's retain their own top location.
*
* Undo
* --
* Undo/Redo works by storing
* events in a queue, and a pointer
* to the current position in the
* queue...
*
* Events are stored using an
* arbitrary op-code system
* to keep track of
* a) the two cursors (normal and selected)
* b) input (visible and control (ie backspace))
*
* input data is stored as its
* ASCII value, the opcodes are
* then selected to not conflict.
*
* opcodes with data in between are
* written at the beginning and end
* of the data to allow undo and redo
* to simply check the code at the current
* undo position
*
*/
/***/
static void txt_pop_first(Text *text);
static void txt_pop_last(Text *text);
static void txt_undo_add_blockop(Text *text, int op, const char *buf);
static void txt_delete_line(Text *text, TextLine *line);
static void txt_delete_sel(Text *text);
static void txt_make_dirty(Text *text);
/***/
static unsigned char undoing;
/* allow to switch off undoing externally */
void txt_set_undostate(int u)
{
undoing = u;
}
int txt_get_undostate(void)
{
return undoing;
}
static void init_undo_text(Text *text)
{
text->undo_pos = -1;
text->undo_len = TXT_INIT_UNDO;
text->undo_buf = MEM_mallocN(text->undo_len, "undo buf");
}
void BKE_text_free(Text *text)
{
TextLine *tmp;
for (tmp = text->lines.first; tmp; tmp = tmp->next) {
MEM_freeN(tmp->line);
if (tmp->format)
MEM_freeN(tmp->format);
}
BLI_freelistN(&text->lines);
if (text->name) MEM_freeN(text->name);
MEM_freeN(text->undo_buf);
#ifdef WITH_PYTHON
if (text->compiled) BPY_text_free_code(text);
#endif
}
Text *BKE_text_add(Main *bmain, const char *name)
{
Text *ta;
TextLine *tmp;
ta = BKE_libblock_alloc(bmain, ID_TXT, name);
ta->id.us = 1;
ta->name = NULL;
init_undo_text(ta);
ta->nlines = 1;
ta->flags = TXT_ISDIRTY | TXT_ISMEM;
if ((U.flag & USER_TXT_TABSTOSPACES_DISABLE) == 0)
ta->flags |= TXT_TABSTOSPACES;
BLI_listbase_clear(&ta->lines);
tmp = (TextLine *) MEM_mallocN(sizeof(TextLine), "textline");
tmp->line = (char *) MEM_mallocN(1, "textline_string");
tmp->format = NULL;
tmp->line[0] = 0;
tmp->len = 0;
tmp->next = NULL;
tmp->prev = NULL;
BLI_addhead(&ta->lines, tmp);
ta->curl = ta->lines.first;
ta->curc = 0;
ta->sell = ta->lines.first;
ta->selc = 0;
return ta;
}
/* this function replaces extended ascii characters */
/* to a valid utf-8 sequences */
int txt_extended_ascii_as_utf8(char **str)
{
int bad_char, added = 0, i = 0;
int length = strlen(*str);
while ((*str)[i]) {
if ((bad_char = BLI_utf8_invalid_byte(*str + i, length - i)) == -1)
break;
added++;
i += bad_char + 1;
}
if (added != 0) {
char *newstr = MEM_mallocN(length + added + 1, "text_line");
int mi = 0;
i = 0;
while ((*str)[i]) {
if ((bad_char = BLI_utf8_invalid_byte((*str) + i, length - i)) == -1) {
memcpy(newstr + mi, (*str) + i, length - i + 1);
break;
}
memcpy(newstr + mi, (*str) + i, bad_char);
BLI_str_utf8_from_unicode((*str)[i + bad_char], newstr + mi + bad_char);
i += bad_char + 1;
mi += bad_char + 2;
}
newstr[length + added] = '\0';
MEM_freeN(*str);
*str = newstr;
}
return added;
}
// this function removes any control characters from
// a textline and fixes invalid utf-8 sequences
static void cleanup_textline(TextLine *tl)
{
int i;
for (i = 0; i < tl->len; i++) {
if (tl->line[i] < ' ' && tl->line[i] != '\t') {
memmove(tl->line + i, tl->line + i + 1, tl->len - i);
tl->len--;
i--;
}
}
tl->len += txt_extended_ascii_as_utf8(&tl->line);
}
int BKE_text_reload(Text *text)
{
FILE *fp;
int i, llen, len;
unsigned char *buffer;
TextLine *tmp;
char str[FILE_MAX];
struct stat st;
if (!text || !text->name) return 0;
BLI_strncpy(str, text->name, FILE_MAX);
BLI_path_abs(str, G.main->name);
fp = BLI_fopen(str, "r");
if (fp == NULL) return 0;
/* free memory: */
for (tmp = text->lines.first; tmp; tmp = tmp->next) {
MEM_freeN(tmp->line);
if (tmp->format) MEM_freeN(tmp->format);
}
BLI_freelistN(&text->lines);
BLI_listbase_clear(&text->lines);
text->curl = text->sell = NULL;
/* clear undo buffer */
MEM_freeN(text->undo_buf);
init_undo_text(text);
fseek(fp, 0L, SEEK_END);
len = ftell(fp);
fseek(fp, 0L, SEEK_SET);
text->undo_pos = -1;
buffer = MEM_mallocN(len, "text_buffer");
// under windows fread can return less then len bytes because
// of CR stripping
len = fread(buffer, 1, len, fp);
fclose(fp);
stat(str, &st);
text->mtime = st.st_mtime;
text->nlines = 0;
llen = 0;
for (i = 0; i < len; i++) {
if (buffer[i] == '\n') {
tmp = (TextLine *) MEM_mallocN(sizeof(TextLine), "textline");
tmp->line = (char *) MEM_mallocN(llen + 1, "textline_string");
tmp->format = NULL;
if (llen) memcpy(tmp->line, &buffer[i - llen], llen);
tmp->line[llen] = 0;
tmp->len = llen;
cleanup_textline(tmp);
BLI_addtail(&text->lines, tmp);
text->nlines++;
llen = 0;
continue;
}
llen++;
}
if (llen != 0 || text->nlines == 0) {
tmp = (TextLine *) MEM_mallocN(sizeof(TextLine), "textline");
tmp->line = (char *) MEM_mallocN(llen + 1, "textline_string");
tmp->format = NULL;
if (llen) memcpy(tmp->line, &buffer[i - llen], llen);
tmp->line[llen] = 0;
tmp->len = llen;
cleanup_textline(tmp);
BLI_addtail(&text->lines, tmp);
text->nlines++;
}
text->curl = text->sell = text->lines.first;
text->curc = text->selc = 0;
MEM_freeN(buffer);
return 1;
}
Text *BKE_text_load_ex(Main *bmain, const char *file, const char *relpath, const bool is_internal)
{
FILE *fp;
int i, llen, len;
unsigned char *buffer;
TextLine *tmp;
Text *ta;
char str[FILE_MAX];
struct stat st;
BLI_strncpy(str, file, FILE_MAX);
if (relpath) /* can be NULL (bg mode) */
BLI_path_abs(str, relpath);
fp = BLI_fopen(str, "r");
if (fp == NULL) return NULL;
ta = BKE_libblock_alloc(bmain, ID_TXT, BLI_path_basename(str));
ta->id.us = 1;
BLI_listbase_clear(&ta->lines);
ta->curl = ta->sell = NULL;
if ((U.flag & USER_TXT_TABSTOSPACES_DISABLE) == 0)
ta->flags = TXT_TABSTOSPACES;
fseek(fp, 0L, SEEK_END);
len = ftell(fp);
fseek(fp, 0L, SEEK_SET);
if (is_internal == false) {
ta->name = MEM_mallocN(strlen(file) + 1, "text_name");
strcpy(ta->name, file);
}
else {
ta->flags |= TXT_ISMEM | TXT_ISDIRTY;
}
init_undo_text(ta);
buffer = MEM_mallocN(len, "text_buffer");
// under windows fread can return less then len bytes because
// of CR stripping
len = fread(buffer, 1, len, fp);
fclose(fp);
stat(str, &st);
ta->mtime = st.st_mtime;
ta->nlines = 0;
llen = 0;
for (i = 0; i < len; i++) {
if (buffer[i] == '\n') {
tmp = (TextLine *) MEM_mallocN(sizeof(TextLine), "textline");
tmp->line = (char *) MEM_mallocN(llen + 1, "textline_string");
tmp->format = NULL;
if (llen) memcpy(tmp->line, &buffer[i - llen], llen);
tmp->line[llen] = 0;
tmp->len = llen;
cleanup_textline(tmp);
BLI_addtail(&ta->lines, tmp);
ta->nlines++;
llen = 0;
continue;
}
llen++;
}
/* create new line in cases:
* - rest of line (if last line in file hasn't got \n terminator).
* in this case content of such line would be used to fill text line buffer
* - file is empty. in this case new line is needed to start editing from.
* - last characted in buffer is \n. in this case new line is needed to
* deal with newline at end of file. (see [#28087]) (sergey) */
if (llen != 0 || ta->nlines == 0 || buffer[len - 1] == '\n') {
tmp = (TextLine *) MEM_mallocN(sizeof(TextLine), "textline");
tmp->line = (char *) MEM_mallocN(llen + 1, "textline_string");
tmp->format = NULL;
if (llen) memcpy(tmp->line, &buffer[i - llen], llen);
tmp->line[llen] = 0;
tmp->len = llen;
cleanup_textline(tmp);
BLI_addtail(&ta->lines, tmp);
ta->nlines++;
}
ta->curl = ta->sell = ta->lines.first;
ta->curc = ta->selc = 0;
MEM_freeN(buffer);
return ta;
}
Text *BKE_text_load(Main *bmain, const char *file, const char *relpath)
{
return BKE_text_load_ex(bmain, file, relpath, false);
}
Text *BKE_text_copy(Text *ta)
{
Text *tan;
TextLine *line, *tmp;
tan = BKE_libblock_copy(&ta->id);
/* file name can be NULL */
if (ta->name) {
tan->name = MEM_mallocN(strlen(ta->name) + 1, "text_name");
strcpy(tan->name, ta->name);
}
else {
tan->name = NULL;
}
tan->flags = ta->flags | TXT_ISDIRTY;
BLI_listbase_clear(&tan->lines);
tan->curl = tan->sell = NULL;
tan->nlines = ta->nlines;
line = ta->lines.first;
/* Walk down, reconstructing */
while (line) {
tmp = (TextLine *) MEM_mallocN(sizeof(TextLine), "textline");
tmp->line = MEM_mallocN(line->len + 1, "textline_string");
tmp->format = NULL;
strcpy(tmp->line, line->line);
tmp->len = line->len;
BLI_addtail(&tan->lines, tmp);
line = line->next;
}
tan->curl = tan->sell = tan->lines.first;
tan->curc = tan->selc = 0;
init_undo_text(tan);
return tan;
}
void BKE_text_unlink(Main *bmain, Text *text)
{
bScreen *scr;
ScrArea *area;
SpaceLink *sl;
Object *ob;
bController *cont;
bActuator *act;
bConstraint *con;
bNodeTree *ntree;
bNode *node;
Material *mat;
Scene *sce;
SceneRenderLayer *srl;
FreestyleModuleConfig *module;
short update;
for (ob = bmain->object.first; ob; ob = ob->id.next) {
/* game controllers */
for (cont = ob->controllers.first; cont; cont = cont->next) {
if (cont->type == CONT_PYTHON) {
bPythonCont *pc;
pc = cont->data;
if (pc->text == text) pc->text = NULL;
}
}
/* game actuators */
for (act = ob->actuators.first; act; act = act->next) {
if (act->type == ACT_2DFILTER) {
bTwoDFilterActuator *tfa;
tfa = act->data;
if (tfa->text == text) tfa->text = NULL;
}
}
/* pyconstraints */
update = 0;
if (ob->type == OB_ARMATURE && ob->pose) {
bPoseChannel *pchan;
for (pchan = ob->pose->chanbase.first; pchan; pchan = pchan->next) {
for (con = pchan->constraints.first; con; con = con->next) {
if (con->type == CONSTRAINT_TYPE_PYTHON) {
bPythonConstraint *data = con->data;
if (data->text == text) data->text = NULL;
update = 1;
}
}
}
}
for (con = ob->constraints.first; con; con = con->next) {
if (con->type == CONSTRAINT_TYPE_PYTHON) {
bPythonConstraint *data = con->data;
if (data->text == text) data->text = NULL;
update = 1;
}
}
if (update)
DAG_id_tag_update(&ob->id, OB_RECALC_DATA);
}
/* nodes */
for (mat = bmain->mat.first; mat; mat = mat->id.next) {
ntree = mat->nodetree;
if (!ntree)
continue;
for (node = ntree->nodes.first; node; node = node->next) {
if (node->type == SH_NODE_SCRIPT) {
Text *ntext = (Text *)node->id;
if (ntext == text) node->id = NULL;
}
}
}
for (ntree = bmain->nodetree.first; ntree; ntree = ntree->id.next) {
for (node = ntree->nodes.first; node; node = node->next) {
if (node->type == SH_NODE_SCRIPT) {
Text *ntext = (Text *)node->id;
if (ntext == text) node->id = NULL;
}
}
}
/* text space */
for (scr = bmain->screen.first; scr; scr = scr->id.next) {
for (area = scr->areabase.first; area; area = area->next) {
for (sl = area->spacedata.first; sl; sl = sl->next) {
if (sl->spacetype == SPACE_TEXT) {
SpaceText *st = (SpaceText *) sl;
if (st->text == text) {
st->text = NULL;
st->top = 0;
}
}
}
}
}
/* Freestyle */
for (sce = bmain->scene.first; sce; sce = sce->id.next) {
for (srl = sce->r.layers.first; srl; srl = srl->next) {
for (module = srl->freestyleConfig.modules.first; module; module = module->next) {
if (module->script == text)
module->script = NULL;
}
}
}
text->id.us = 0;
}
void BKE_text_clear(Text *text) /* called directly from rna */
{
int oldstate;
oldstate = txt_get_undostate( );
txt_set_undostate(1);
txt_sel_all(text);
txt_delete_sel(text);
txt_set_undostate(oldstate);
txt_make_dirty(text);
}
void BKE_text_write(Text *text, const char *str) /* called directly from rna */
{
int oldstate;
oldstate = txt_get_undostate();
txt_insert_buf(text, str);
txt_move_eof(text, 0);
txt_set_undostate(oldstate);
txt_make_dirty(text);
}
/* returns 0 if file on disk is the same or Text is in memory only
* returns 1 if file has been modified on disk since last local edit
* returns 2 if file on disk has been deleted
* -1 is returned if an error occurs */
int BKE_text_file_modified_check(Text *text)
{
struct stat st;
int result;
char file[FILE_MAX];
if (!text || !text->name)
return 0;
BLI_strncpy(file, text->name, FILE_MAX);
BLI_path_abs(file, G.main->name);
if (!BLI_exists(file))
return 2;
result = BLI_stat(file, &st);
if (result == -1)
return -1;
if ((st.st_mode & S_IFMT) != S_IFREG)
return -1;
if (st.st_mtime > text->mtime)
return 1;
return 0;
}
void BKE_text_file_modified_ignore(Text *text)
{
struct stat st;
int result;
char file[FILE_MAX];
if (!text || !text->name) return;
BLI_strncpy(file, text->name, FILE_MAX);
BLI_path_abs(file, G.main->name);
if (!BLI_exists(file)) return;
result = BLI_stat(file, &st);
if (result == -1 || (st.st_mode & S_IFMT) != S_IFREG)
return;
text->mtime = st.st_mtime;
}
/*****************************/
/* Editing utility functions */
/*****************************/
static void make_new_line(TextLine *line, char *newline)
{
if (line->line) MEM_freeN(line->line);
if (line->format) MEM_freeN(line->format);
line->line = newline;
line->len = strlen(newline);
line->format = NULL;
}
static TextLine *txt_new_line(const char *str)
{
TextLine *tmp;
if (!str) str = "";
tmp = (TextLine *) MEM_mallocN(sizeof(TextLine), "textline");
tmp->line = MEM_mallocN(strlen(str) + 1, "textline_string");
tmp->format = NULL;
strcpy(tmp->line, str);
tmp->len = strlen(str);
tmp->next = tmp->prev = NULL;
return tmp;
}
static TextLine *txt_new_linen(const char *str, int n)
{
TextLine *tmp;
tmp = (TextLine *) MEM_mallocN(sizeof(TextLine), "textline");
tmp->line = MEM_mallocN(n + 1, "textline_string");
tmp->format = NULL;
BLI_strncpy(tmp->line, (str) ? str : "", n + 1);
tmp->len = strlen(tmp->line);
tmp->next = tmp->prev = NULL;
return tmp;
}
void txt_clean_text(Text *text)
{
TextLine **top, **bot;
if (!text) return;
if (!text->lines.first) {
if (text->lines.last) text->lines.first = text->lines.last;
else text->lines.first = text->lines.last = txt_new_line(NULL);
}
if (!text->lines.last) text->lines.last = text->lines.first;
top = (TextLine **) &text->lines.first;
bot = (TextLine **) &text->lines.last;
while ((*top)->prev) *top = (*top)->prev;
while ((*bot)->next) *bot = (*bot)->next;
if (!text->curl) {
if (text->sell) text->curl = text->sell;
else text->curl = text->lines.first;
text->curc = 0;
}
if (!text->sell) {
text->sell = text->curl;
text->selc = 0;
}
}
int txt_get_span(TextLine *from, TextLine *to)
{
int ret = 0;
TextLine *tmp = from;
if (!to || !from) return 0;
if (from == to) return 0;
/* Look forwards */
while (tmp) {
if (tmp == to) return ret;
ret++;
tmp = tmp->next;
}
/* Look backwards */
if (!tmp) {
tmp = from;
ret = 0;
while (tmp) {
if (tmp == to) break;
ret--;
tmp = tmp->prev;
}
if (!tmp) ret = 0;
}
return ret;
}
static void txt_make_dirty(Text *text)
{
text->flags |= TXT_ISDIRTY;
#ifdef WITH_PYTHON
if (text->compiled) BPY_text_free_code(text);
#endif
}
/****************************/
/* Cursor utility functions */
/****************************/
static void txt_curs_cur(Text *text, TextLine ***linep, int **charp)
{
*linep = &text->curl; *charp = &text->curc;
}
static void txt_curs_sel(Text *text, TextLine ***linep, int **charp)
{
*linep = &text->sell; *charp = &text->selc;
}
bool txt_cursor_is_line_start(Text *text)
{
return (text->selc == 0);
}
bool txt_cursor_is_line_end(Text *text)
{
return (text->selc == text->sell->len);
}
/*****************************/
/* Cursor movement functions */
/*****************************/
int txt_utf8_offset_to_index(const char *str, int offset)
{
int index = 0, pos = 0;
while (pos != offset) {
pos += BLI_str_utf8_size(str + pos);
index++;
}
return index;
}
int txt_utf8_index_to_offset(const char *str, int index)
{
int offset = 0, pos = 0;
while (pos != index) {
offset += BLI_str_utf8_size(str + offset);
pos++;
}
return offset;
}
int txt_utf8_offset_to_column(const char *str, int offset)
{
int column = 0, pos = 0;
while (pos < offset) {
column += BLI_str_utf8_char_width_safe(str + pos);
pos += BLI_str_utf8_size_safe(str + pos);
}
return column;
}
int txt_utf8_column_to_offset(const char *str, int column)
{
int offset = 0, pos = 0, col;
while (*(str + offset) && pos < column) {
col = BLI_str_utf8_char_width_safe(str + offset);
if (pos + col > column)
break;
offset += BLI_str_utf8_size_safe(str + offset);
pos += col;
}
return offset;
}
void txt_move_up(Text *text, const bool sel)
{
TextLine **linep;
int *charp;
if (!text) return;
if (sel) txt_curs_sel(text, &linep, &charp);
else { txt_pop_first(text); txt_curs_cur(text, &linep, &charp); }
if (!*linep) return;
if ((*linep)->prev) {
int column = txt_utf8_offset_to_column((*linep)->line, *charp);
*linep = (*linep)->prev;
*charp = txt_utf8_column_to_offset((*linep)->line, column);
}
else {
txt_move_bol(text, sel);
}
if (!sel) txt_pop_sel(text);
}
void txt_move_down(Text *text, const bool sel)
{
TextLine **linep;
int *charp;
if (!text) return;
if (sel) txt_curs_sel(text, &linep, &charp);
else { txt_pop_last(text); txt_curs_cur(text, &linep, &charp); }
if (!*linep) return;
if ((*linep)->next) {
int column = txt_utf8_offset_to_column((*linep)->line, *charp);
*linep = (*linep)->next;
*charp = txt_utf8_column_to_offset((*linep)->line, column);
}
else {
txt_move_eol(text, sel);
}
if (!sel) txt_pop_sel(text);
}
void txt_move_left(Text *text, const bool sel)
{
TextLine **linep;
int *charp;
int tabsize = 0, i = 0;
if (!text) return;
if (sel) txt_curs_sel(text, &linep, &charp);
else { txt_pop_first(text); txt_curs_cur(text, &linep, &charp); }
if (!*linep) return;
if (*charp == 0) {
if ((*linep)->prev) {
txt_move_up(text, sel);
*charp = (*linep)->len;
}
}
else {
// do nice left only if there are only spaces
// TXT_TABSIZE hardcoded in DNA_text_types.h
if (text->flags & TXT_TABSTOSPACES) {
tabsize = (*charp < TXT_TABSIZE) ? *charp : TXT_TABSIZE;
for (i = 0; i < (*charp); i++)
if ((*linep)->line[i] != ' ') {
tabsize = 0;
break;
}
// if in the middle of the space-tab
if (tabsize && (*charp) % TXT_TABSIZE != 0)
tabsize = ((*charp) % TXT_TABSIZE);
}
if (tabsize)
(*charp) -= tabsize;
else {
const char *prev = BLI_str_prev_char_utf8((*linep)->line + *charp);
*charp = prev - (*linep)->line;
}
}
if (!sel) txt_pop_sel(text);
}
void txt_move_right(Text *text, const bool sel)
{
TextLine **linep;
int *charp, i;
bool do_tab = false;
if (!text) return;
if (sel) txt_curs_sel(text, &linep, &charp);
else { txt_pop_last(text); txt_curs_cur(text, &linep, &charp); }
if (!*linep) return;
if (*charp == (*linep)->len) {
if ((*linep)->next) {
txt_move_down(text, sel);
*charp = 0;
}
}
else {
// do nice right only if there are only spaces
// spaces hardcoded in DNA_text_types.h
if (text->flags & TXT_TABSTOSPACES && (*linep)->line[*charp] == ' ') {
do_tab = true;
for (i = 0; i < *charp; i++)
if ((*linep)->line[i] != ' ') {
do_tab = false;
break;
}
}
if (do_tab) {
int tabsize = (*charp) % TXT_TABSIZE + 1;
for (i = *charp + 1; (*linep)->line[i] == ' ' && tabsize < TXT_TABSIZE; i++)
tabsize++;
(*charp) = i;
}
else {
(*charp) += BLI_str_utf8_size((*linep)->line + *charp);
}
}
if (!sel) txt_pop_sel(text);
}
void txt_jump_left(Text *text, const bool sel, const bool use_init_step)
{
TextLine **linep;
int *charp;
if (!text) return;
if (sel) txt_curs_sel(text, &linep, &charp);
else { txt_pop_first(text); txt_curs_cur(text, &linep, &charp); }
if (!*linep) return;
BLI_str_cursor_step_utf8((*linep)->line, (*linep)->len,
charp, STRCUR_DIR_PREV,
STRCUR_JUMP_DELIM, use_init_step);
if (!sel) txt_pop_sel(text);
}
void txt_jump_right(Text *text, const bool sel, const bool use_init_step)
{
TextLine **linep;
int *charp;
if (!text) return;
if (sel) txt_curs_sel(text, &linep, &charp);
else { txt_pop_last(text); txt_curs_cur(text, &linep, &charp); }
if (!*linep) return;
BLI_str_cursor_step_utf8((*linep)->line, (*linep)->len,
charp, STRCUR_DIR_NEXT,
STRCUR_JUMP_DELIM, use_init_step);
if (!sel) txt_pop_sel(text);
}
void txt_move_bol(Text *text, const bool sel)
{
TextLine **linep;
int *charp;
if (!text) return;
if (sel) txt_curs_sel(text, &linep, &charp);
else txt_curs_cur(text, &linep, &charp);
if (!*linep) return;
*charp = 0;
if (!sel) txt_pop_sel(text);
}
void txt_move_eol(Text *text, const bool sel)
{
TextLine **linep;
int *charp;
if (!text) return;
if (sel) txt_curs_sel(text, &linep, &charp);
else txt_curs_cur(text, &linep, &charp);
if (!*linep) return;
*charp = (*linep)->len;
if (!sel) txt_pop_sel(text);
}
void txt_move_bof(Text *text, const bool sel)
{
TextLine **linep;
int *charp;
if (!text) return;
if (sel) txt_curs_sel(text, &linep, &charp);
else txt_curs_cur(text, &linep, &charp);
if (!*linep) return;
*linep = text->lines.first;
*charp = 0;
if (!sel) txt_pop_sel(text);
}
void txt_move_eof(Text *text, const bool sel)
{
TextLine **linep;
int *charp;
if (!text) return;
if (sel) txt_curs_sel(text, &linep, &charp);
else txt_curs_cur(text, &linep, &charp);
if (!*linep) return;
*linep = text->lines.last;
*charp = (*linep)->len;
if (!sel) txt_pop_sel(text);
}
void txt_move_toline(Text *text, unsigned int line, const bool sel)
{
txt_move_to(text, line, 0, sel);
}
/* Moves to a certain byte in a line, not a certain utf8-character! */
void txt_move_to(Text *text, unsigned int line, unsigned int ch, const bool sel)
{
TextLine **linep;
int *charp;
unsigned int i;
if (!text) return;
if (sel) txt_curs_sel(text, &linep, &charp);
else txt_curs_cur(text, &linep, &charp);
if (!*linep) return;
*linep = text->lines.first;
for (i = 0; i < line; i++) {
if ((*linep)->next) *linep = (*linep)->next;
else break;
}
if (ch > (unsigned int)((*linep)->len))
ch = (unsigned int)((*linep)->len);
*charp = ch;
if (!sel) txt_pop_sel(text);
}
/****************************/
/* Text selection functions */
/****************************/
static void txt_curs_swap(Text *text)
{
TextLine *tmpl;
int tmpc;
tmpl = text->curl;
text->curl = text->sell;
text->sell = tmpl;
tmpc = text->curc;
text->curc = text->selc;
text->selc = tmpc;
}
static void txt_pop_first(Text *text)
{
if (txt_get_span(text->curl, text->sell) < 0 ||
(text->curl == text->sell && text->curc > text->selc))
{
txt_curs_swap(text);
}
txt_pop_sel(text);
}
static void txt_pop_last(Text *text)
{
if (txt_get_span(text->curl, text->sell) > 0 ||
(text->curl == text->sell && text->curc < text->selc))
{
txt_curs_swap(text);
}
txt_pop_sel(text);
}
void txt_pop_sel(Text *text)
{
text->sell = text->curl;
text->selc = text->curc;
}
void txt_order_cursors(Text *text, const bool reverse)
{
if (!text) return;
if (!text->curl) return;
if (!text->sell) return;
/* Flip so text->curl is before/after text->sell */
if (reverse == false) {
if ((txt_get_span(text->curl, text->sell) < 0) ||
(text->curl == text->sell && text->curc > text->selc))
{
txt_curs_swap(text);
}
}
else {
if ((txt_get_span(text->curl, text->sell) > 0) ||
(text->curl == text->sell && text->curc < text->selc))
{
txt_curs_swap(text);
}
}
}
bool txt_has_sel(Text *text)
{
return ((text->curl != text->sell) || (text->curc != text->selc));
}
static void txt_delete_sel(Text *text)
{
TextLine *tmpl;
char *buf;
if (!text) return;
if (!text->curl) return;
if (!text->sell) return;
if (!txt_has_sel(text)) return;
txt_order_cursors(text, false);
if (!undoing) {
buf = txt_sel_to_buf(text);
txt_undo_add_blockop(text, UNDO_DBLOCK, buf);
MEM_freeN(buf);
}
buf = MEM_mallocN(text->curc + (text->sell->len - text->selc) + 1, "textline_string");
strncpy(buf, text->curl->line, text->curc);
strcpy(buf + text->curc, text->sell->line + text->selc);
buf[text->curc + (text->sell->len - text->selc)] = 0;
make_new_line(text->curl, buf);
tmpl = text->sell;
while (tmpl != text->curl) {
tmpl = tmpl->prev;
if (!tmpl) break;
txt_delete_line(text, tmpl->next);
}
text->sell = text->curl;
text->selc = text->curc;
}
void txt_sel_all(Text *text)
{
if (!text) return;
text->curl = text->lines.first;
text->curc = 0;
text->sell = text->lines.last;
text->selc = text->sell->len;
}
void txt_sel_line(Text *text)
{
if (!text) return;
if (!text->curl) return;
text->curc = 0;
text->sell = text->curl;
text->selc = text->sell->len;
}
/***************************/
/* Cut and paste functions */
/***************************/
char *txt_to_buf(Text *text)
{
int length;
TextLine *tmp, *linef, *linel;
int charf, charl;
char *buf;
if (!text) return NULL;
if (!text->curl) return NULL;
if (!text->sell) return NULL;
if (!text->lines.first) return NULL;
linef = text->lines.first;
charf = 0;
linel = text->lines.last;
charl = linel->len;
if (linef == text->lines.last) {
length = charl - charf;
buf = MEM_mallocN(length + 2, "text buffer");
BLI_strncpy(buf, linef->line + charf, length + 1);
buf[length] = 0;
}
else {
length = linef->len - charf;
length += charl;
length += 2; /* For the 2 '\n' */
tmp = linef->next;
while (tmp && tmp != linel) {
length += tmp->len + 1;
tmp = tmp->next;
}
buf = MEM_mallocN(length + 1, "cut buffer");
strncpy(buf, linef->line + charf, linef->len - charf);
length = linef->len - charf;
buf[length++] = '\n';
tmp = linef->next;
while (tmp && tmp != linel) {
strncpy(buf + length, tmp->line, tmp->len);
length += tmp->len;
buf[length++] = '\n';
tmp = tmp->next;
}
strncpy(buf + length, linel->line, charl);
length += charl;
/* python compiler wants an empty end line */
buf[length++] = '\n';
buf[length] = 0;
}
return buf;
}
int txt_find_string(Text *text, const char *findstr, int wrap, int match_case)
{
TextLine *tl, *startl;
char *s = NULL;
if (!text || !text->curl || !text->sell) return 0;
txt_order_cursors(text, false);
tl = startl = text->sell;
if (match_case) s = strstr(&tl->line[text->selc], findstr);
else s = BLI_strcasestr(&tl->line[text->selc], findstr);
while (!s) {
tl = tl->next;
if (!tl) {
if (wrap)
tl = text->lines.first;
else
break;
}
if (match_case) s = strstr(tl->line, findstr);
else s = BLI_strcasestr(tl->line, findstr);
if (tl == startl)
break;
}
if (s) {
int newl = txt_get_span(text->lines.first, tl);
int newc = (int)(s - tl->line);
txt_move_to(text, newl, newc, 0);
txt_move_to(text, newl, newc + strlen(findstr), 1);
return 1;
}
else
return 0;
}
char *txt_sel_to_buf(Text *text)
{
char *buf;
int length = 0;
TextLine *tmp, *linef, *linel;
int charf, charl;
if (!text) return NULL;
if (!text->curl) return NULL;
if (!text->sell) return NULL;
if (text->curl == text->sell) {
linef = linel = text->curl;
if (text->curc < text->selc) {
charf = text->curc;
charl = text->selc;
}
else {
charf = text->selc;
charl = text->curc;
}
}
else if (txt_get_span(text->curl, text->sell) < 0) {
linef = text->sell;
linel = text->curl;
charf = text->selc;
charl = text->curc;
}
else {
linef = text->curl;
linel = text->sell;
charf = text->curc;
charl = text->selc;
}
if (linef == linel) {
length = charl - charf;
buf = MEM_mallocN(length + 1, "sel buffer");
BLI_strncpy(buf, linef->line + charf, length + 1);
}
else {
length += linef->len - charf;
length += charl;
length++; /* For the '\n' */
tmp = linef->next;
while (tmp && tmp != linel) {
length += tmp->len + 1;
tmp = tmp->next;
}
buf = MEM_mallocN(length + 1, "sel buffer");
strncpy(buf, linef->line + charf, linef->len - charf);
length = linef->len - charf;
buf[length++] = '\n';
tmp = linef->next;
while (tmp && tmp != linel) {
strncpy(buf + length, tmp->line, tmp->len);
length += tmp->len;
buf[length++] = '\n';
tmp = tmp->next;
}
strncpy(buf + length, linel->line, charl);
length += charl;
buf[length] = 0;
}
return buf;
}
void txt_insert_buf(Text *text, const char *in_buffer)
{
int l = 0, u, len;
size_t i = 0, j;
TextLine *add;
char *buffer;
if (!text) return;
if (!in_buffer) return;
txt_delete_sel(text);
len = strlen(in_buffer);
buffer = BLI_strdupn(in_buffer, len);
len += txt_extended_ascii_as_utf8(&buffer);
if (!undoing) txt_undo_add_blockop(text, UNDO_IBLOCK, buffer);
u = undoing;
undoing = 1;
/* Read the first line (or as close as possible */
while (buffer[i] && buffer[i] != '\n')
txt_add_raw_char(text, BLI_str_utf8_as_unicode_step(buffer, &i));
if (buffer[i] == '\n') txt_split_curline(text);
else { undoing = u; MEM_freeN(buffer); return; }
i++;
while (i < len) {
l = 0;
while (buffer[i] && buffer[i] != '\n') {
i++; l++;
}
if (buffer[i] == '\n') {
add = txt_new_linen(buffer + (i - l), l);
BLI_insertlinkbefore(&text->lines, text->curl, add);
i++;
}
else {
for (j = i - l; j < i && j < len; )
txt_add_raw_char(text, BLI_str_utf8_as_unicode_step(buffer, &j));
break;
}
}
MEM_freeN(buffer);
undoing = u;
}
/******************/
/* Undo functions */
/******************/
static bool max_undo_test(Text *text, int x)
{
while (text->undo_pos + x >= text->undo_len) {
if (text->undo_len * 2 > TXT_MAX_UNDO) {
/* XXX error("Undo limit reached, buffer cleared\n"); */
MEM_freeN(text->undo_buf);
init_undo_text(text);
return 0;
}
else {
void *tmp = text->undo_buf;
text->undo_buf = MEM_callocN(text->undo_len * 2, "undo buf");
memcpy(text->undo_buf, tmp, text->undo_len);
text->undo_len *= 2;
MEM_freeN(tmp);
}
}
return 1;
}
#if 0 /* UNUSED */
static void dump_buffer(Text *text)
{
int i = 0;
while (i++ < text->undo_pos) printf("%d: %d %c\n", i, text->undo_buf[i], text->undo_buf[i]);
}
/* Note: this function is outdated and must be updated if needed for future use */
void txt_print_undo(Text *text)
{
int i = 0;
int op;
const char *ops;
int linep, charp;
dump_buffer(text);
printf("---< Undo Buffer >---\n");
printf("UndoPosition is %d\n", text->undo_pos);
while (i <= text->undo_pos) {
op = text->undo_buf[i];
if (op == UNDO_INSERT_1) {
ops = "Insert ascii ";
}
else if (op == UNDO_INSERT_2) {
ops = "Insert 2 bytes ";
}
else if (op == UNDO_INSERT_3) {
ops = "Insert 3 bytes ";
}
else if (op == UNDO_INSERT_4) {
ops = "Insert unicode ";
}
else if (op == UNDO_BS_1) {
ops = "Backspace for ascii ";
}
else if (op == UNDO_BS_2) {
ops = "Backspace for 2 bytes ";
}
else if (op == UNDO_BS_3) {
ops = "Backspace for 3 bytes ";
}
else if (op == UNDO_BS_4) {
ops = "Backspace for unicode ";
}
else if (op == UNDO_DEL_1) {
ops = "Delete ascii ";
}
else if (op == UNDO_DEL_2) {
ops = "Delete 2 bytes ";
}
else if (op == UNDO_DEL_3) {
ops = "Delete 3 bytes ";
}
else if (op == UNDO_DEL_4) {
ops = "Delete unicode ";
}
else if (op == UNDO_DBLOCK) {
ops = "Delete text block";
}
else if (op == UNDO_IBLOCK) {
ops = "Insert text block";
}
else if (op == UNDO_INDENT) {
ops = "Indent ";
}
else if (op == UNDO_UNINDENT) {
ops = "Unindent ";
}
else if (op == UNDO_COMMENT) {
ops = "Comment ";
}
else if (op == UNDO_UNCOMMENT) {
ops = "Uncomment ";
}
else {
ops = "Unknown";
}
printf("Op (%o) at %d = %s", op, i, ops);
if (op >= UNDO_INSERT_1 && op <= UNDO_DEL_4) {
i++;
printf(" - Char is ");
switch (op) {
case UNDO_INSERT_1: case UNDO_BS_1: case UNDO_DEL_1:
printf("%c", text->undo_buf[i]);
i++;
break;
case UNDO_INSERT_2: case UNDO_BS_2: case UNDO_DEL_2:
printf("%c%c", text->undo_buf[i], text->undo_buf[i + 1]);
i += 2;
break;
case UNDO_INSERT_3: case UNDO_BS_3: case UNDO_DEL_3:
printf("%c%c%c", text->undo_buf[i], text->undo_buf[i + 1], text->undo_buf[i + 2]);
i += 3;
break;
case UNDO_INSERT_4: case UNDO_BS_4: case UNDO_DEL_4:
{
unsigned int uc;
char c[BLI_UTF8_MAX + 1];
size_t c_len;
uc = text->undo_buf[i]; i++;
uc = uc + (text->undo_buf[i] << 8); i++;
uc = uc + (text->undo_buf[i] << 16); i++;
uc = uc + (text->undo_buf[i] << 24); i++;
c_len = BLI_str_utf8_from_unicode(uc, c);
c[c_len] = '\0';
puts(c);
break;
}
}
}
else if (op == UNDO_DBLOCK || op == UNDO_IBLOCK) {
i++;
linep = text->undo_buf[i]; i++;
linep = linep + (text->undo_buf[i] << 8); i++;
linep = linep + (text->undo_buf[i] << 16); i++;
linep = linep + (text->undo_buf[i] << 24); i++;
printf(" (length %d) <", linep);
while (linep > 0) {
putchar(text->undo_buf[i]);
linep--; i++;
}
linep = text->undo_buf[i]; i++;
linep = linep + (text->undo_buf[i] << 8); i++;
linep = linep + (text->undo_buf[i] << 16); i++;
linep = linep + (text->undo_buf[i] << 24); i++;
printf("> (%d)", linep);
}
else if (op == UNDO_INDENT || op == UNDO_UNINDENT) {
i++;
charp = text->undo_buf[i]; i++;
charp = charp + (text->undo_buf[i] << 8); i++;
linep = text->undo_buf[i]; i++;
linep = linep + (text->undo_buf[i] << 8); i++;
linep = linep + (text->undo_buf[i] << 16); i++;
linep = linep + (text->undo_buf[i] << 24); i++;
printf("to <%d, %d> ", linep, charp);
charp = text->undo_buf[i]; i++;
charp = charp + (text->undo_buf[i] << 8); i++;
linep = text->undo_buf[i]; i++;
linep = linep + (text->undo_buf[i] << 8); i++;
linep = linep + (text->undo_buf[i] << 16); i++;
linep = linep + (text->undo_buf[i] << 24); i++;
printf("from <%d, %d>", linep, charp);
}
printf(" %d\n", i);
i++;
}
}
#endif
static void txt_undo_store_uint16(char *undo_buf, int *undo_pos, unsigned short value)
{
undo_buf[*undo_pos] = (value) & 0xff;
(*undo_pos)++;
undo_buf[*undo_pos] = (value >> 8) & 0xff;
(*undo_pos)++;
}
static void txt_undo_store_uint32(char *undo_buf, int *undo_pos, unsigned int value)
{
undo_buf[*undo_pos] = (value) & 0xff;
(*undo_pos)++;
undo_buf[*undo_pos] = (value >> 8) & 0xff;
(*undo_pos)++;
undo_buf[*undo_pos] = (value >> 16) & 0xff;
(*undo_pos)++;
undo_buf[*undo_pos] = (value >> 24) & 0xff;
(*undo_pos)++;
}
/* store the cur cursor to the undo buffer */
static void txt_undo_store_cur(Text *text)
{
txt_undo_store_uint16(text->undo_buf, &text->undo_pos, text->curc);
txt_undo_store_uint32(text->undo_buf, &text->undo_pos, txt_get_span(text->lines.first, text->curl));
}
/* store the sel cursor to the undo buffer */
static void txt_undo_store_sel(Text *text)
{
txt_undo_store_uint16(text->undo_buf, &text->undo_pos, text->selc);
txt_undo_store_uint32(text->undo_buf, &text->undo_pos, txt_get_span(text->lines.first, text->sell));
}
/* store both cursors to the undo buffer */
static void txt_undo_store_cursors(Text *text)
{
txt_undo_store_cur(text);
txt_undo_store_sel(text);
}
/* store an operator along with a block of data */
static void txt_undo_add_blockop(Text *text, int op, const char *buf)
{
unsigned int length = strlen(buf);
if (!max_undo_test(text, length + 11 + 12))
return;
text->undo_pos++;
text->undo_buf[text->undo_pos] = op;
text->undo_pos++;
txt_undo_store_cursors(text);
txt_undo_store_uint32(text->undo_buf, &text->undo_pos, length);
strncpy(text->undo_buf + text->undo_pos, buf, length);
text->undo_pos += length;
txt_undo_store_uint32(text->undo_buf, &text->undo_pos, length);
text->undo_buf[text->undo_pos] = op;
text->undo_buf[text->undo_pos + 1] = 0;
}
/* store a regular operator */
void txt_undo_add_op(Text *text, int op)
{
if (!max_undo_test(text, 15))
return;
text->undo_pos++;
text->undo_buf[text->undo_pos] = op;
text->undo_pos++;
txt_undo_store_cursors(text);
text->undo_buf[text->undo_pos] = op;
text->undo_buf[text->undo_pos + 1] = 0;
}
/* store an operator for a single character */
static void txt_undo_add_charop(Text *text, int op_start, unsigned int c)
{
char utf8[BLI_UTF8_MAX];
size_t i, utf8_size = BLI_str_utf8_from_unicode(c, utf8);
if (!max_undo_test(text, 3 + utf8_size + 12))
return;
text->undo_pos++;
if (utf8_size < 4) {
text->undo_buf[text->undo_pos] = op_start + utf8_size - 1;
text->undo_pos++;
txt_undo_store_cur(text);
for (i = 0; i < utf8_size; i++) {
text->undo_buf[text->undo_pos] = utf8[i];
text->undo_pos++;
}
text->undo_buf[text->undo_pos] = op_start + utf8_size - 1;
}
else {
text->undo_buf[text->undo_pos] = op_start + 3;
text->undo_pos++;
txt_undo_store_cursors(text);
txt_undo_store_uint32(text->undo_buf, &text->undo_pos, c);
text->undo_buf[text->undo_pos] = op_start + 3;
}
text->undo_buf[text->undo_pos + 1] = 0;
}
static unsigned short txt_undo_read_uint16(const char *undo_buf, int *undo_pos)
{
unsigned short val;
val = undo_buf[*undo_pos]; (*undo_pos)--;
val = (val << 8) + undo_buf[*undo_pos]; (*undo_pos)--;
return val;
}
static unsigned int txt_undo_read_uint32(const char *undo_buf, int *undo_pos)
{
unsigned int val;
val = undo_buf[*undo_pos]; (*undo_pos)--;
val = (val << 8) + undo_buf[*undo_pos]; (*undo_pos)--;
val = (val << 8) + undo_buf[*undo_pos]; (*undo_pos)--;
val = (val << 8) + undo_buf[*undo_pos]; (*undo_pos)--;
return val;
}
/* read the cur cursor from the undo buffer */
static void txt_undo_read_cur(const char *undo_buf, int *undo_pos, unsigned int *curln, unsigned short *curc)
{
*curln = txt_undo_read_uint32(undo_buf, undo_pos);
*curc = txt_undo_read_uint16(undo_buf, undo_pos);
}
/* read the sel cursor from the undo buffer */
static void txt_undo_read_sel(const char *undo_buf, int *undo_pos, unsigned int *selln, unsigned short *selc)
{
*selln = txt_undo_read_uint32(undo_buf, undo_pos);
*selc = txt_undo_read_uint16(undo_buf, undo_pos);
}
/* read both cursors from the undo buffer */
static void txt_undo_read_cursors(const char *undo_buf, int *undo_pos,
unsigned int *curln, unsigned short *curc,
unsigned int *selln, unsigned short *selc)
{
txt_undo_read_sel(undo_buf, undo_pos, selln, selc);
txt_undo_read_cur(undo_buf, undo_pos, curln, curc);
}
static unsigned int txt_undo_read_unicode(const char *undo_buf, int *undo_pos, short bytes)
{
unsigned int unicode;
char utf8[BLI_UTF8_MAX + 1];
switch (bytes) {
case 1: /* ascii */
unicode = undo_buf[*undo_pos]; (*undo_pos)--;
break;
case 2: /* 2-byte symbol */
utf8[2] = '\0';
utf8[1] = undo_buf[*undo_pos]; (*undo_pos)--;
utf8[0] = undo_buf[*undo_pos]; (*undo_pos)--;
unicode = BLI_str_utf8_as_unicode(utf8);
break;
case 3: /* 3-byte symbol */
utf8[3] = '\0';
utf8[2] = undo_buf[*undo_pos]; (*undo_pos)--;
utf8[1] = undo_buf[*undo_pos]; (*undo_pos)--;
utf8[0] = undo_buf[*undo_pos]; (*undo_pos)--;
unicode = BLI_str_utf8_as_unicode(utf8);
break;
case 4: /* 32-bit unicode symbol */
unicode = txt_undo_read_uint32(undo_buf, undo_pos);
break;
default:
/* should never happen */
BLI_assert(0);
unicode = 0;
break;
}
return unicode;
}
static unsigned short txt_redo_read_uint16(const char *undo_buf, int *undo_pos)
{
unsigned short val;
val = undo_buf[*undo_pos]; (*undo_pos)++;
val = val + (undo_buf[*undo_pos] << 8); (*undo_pos)++;
return val;
}
static unsigned int txt_redo_read_uint32(const char *undo_buf, int *undo_pos)
{
unsigned int val;
val = undo_buf[*undo_pos]; (*undo_pos)++;
val = val + (undo_buf[*undo_pos] << 8); (*undo_pos)++;
val = val + (undo_buf[*undo_pos] << 16); (*undo_pos)++;
val = val + (undo_buf[*undo_pos] << 24); (*undo_pos)++;
return val;
}
/* redo read cur cursor from the undo buffer */
static void txt_redo_read_cur(const char *undo_buf, int *undo_pos, unsigned int *curln, unsigned short *curc)
{
*curc = txt_redo_read_uint16(undo_buf, undo_pos);
*curln = txt_redo_read_uint32(undo_buf, undo_pos);
}
/* redo read sel cursor from the undo buffer */
static void txt_redo_read_sel(const char *undo_buf, int *undo_pos, unsigned int *selln, unsigned short *selc)
{
*selc = txt_redo_read_uint16(undo_buf, undo_pos);
*selln = txt_redo_read_uint32(undo_buf, undo_pos);
}
/* redo read both cursors from the undo buffer */
static void txt_redo_read_cursors(const char *undo_buf, int *undo_pos,
unsigned int *curln, unsigned short *curc,
unsigned int *selln, unsigned short *selc)
{
txt_redo_read_cur(undo_buf, undo_pos, curln, curc);
txt_redo_read_sel(undo_buf, undo_pos, selln, selc);
}
static unsigned int txt_redo_read_unicode(const char *undo_buf, int *undo_pos, short bytes)
{
unsigned int unicode;
char utf8[BLI_UTF8_MAX + 1];
switch (bytes) {
case 1: /* ascii */
unicode = undo_buf[*undo_pos]; (*undo_pos)++;
break;
case 2: /* 2-byte symbol */
utf8[0] = undo_buf[*undo_pos]; (*undo_pos)++;
utf8[1] = undo_buf[*undo_pos]; (*undo_pos)++;
utf8[2] = '\0';
unicode = BLI_str_utf8_as_unicode(utf8);
break;
case 3: /* 3-byte symbol */
utf8[0] = undo_buf[*undo_pos]; (*undo_pos)++;
utf8[1] = undo_buf[*undo_pos]; (*undo_pos)++;
utf8[2] = undo_buf[*undo_pos]; (*undo_pos)++;
utf8[3] = '\0';
unicode = BLI_str_utf8_as_unicode(utf8);
break;
case 4: /* 32-bit unicode symbol */
unicode = txt_undo_read_uint32(undo_buf, undo_pos);
break;
default:
/* should never happen */
BLI_assert(0);
unicode = 0;
break;
}
return unicode;
}
void txt_do_undo(Text *text)
{
int op = text->undo_buf[text->undo_pos];
int prev_flags;
unsigned int linep, i;
unsigned int uchar;
unsigned int curln, selln;
unsigned short curc, selc;
unsigned short charp;
char *buf;
if (text->undo_pos < 0) {
return;
}
text->undo_pos--;
undoing = 1;
switch (op) {
case UNDO_INSERT_1:
case UNDO_INSERT_2:
case UNDO_INSERT_3:
case UNDO_INSERT_4:
text->undo_pos -= op - UNDO_INSERT_1 + 1;
/* get and restore the cursors */
txt_undo_read_cur(text->undo_buf, &text->undo_pos, &curln, &curc);
txt_move_to(text, curln, curc, 0);
txt_move_to(text, curln, curc, 1);
txt_delete_char(text);
text->undo_pos--;
break;
case UNDO_BS_1:
case UNDO_BS_2:
case UNDO_BS_3:
case UNDO_BS_4:
charp = op - UNDO_BS_1 + 1;
uchar = txt_undo_read_unicode(text->undo_buf, &text->undo_pos, charp);
/* get and restore the cursors */
txt_undo_read_cur(text->undo_buf, &text->undo_pos, &curln, &curc);
txt_move_to(text, curln, curc, 0);
txt_move_to(text, curln, curc, 1);
txt_add_char(text, uchar);
text->undo_pos--;
break;
case UNDO_DEL_1:
case UNDO_DEL_2:
case UNDO_DEL_3:
case UNDO_DEL_4:
charp = op - UNDO_DEL_1 + 1;
uchar = txt_undo_read_unicode(text->undo_buf, &text->undo_pos, charp);
/* get and restore the cursors */
txt_undo_read_cur(text->undo_buf, &text->undo_pos, &curln, &curc);
txt_move_to(text, curln, curc, 0);
txt_move_to(text, curln, curc, 1);
txt_add_char(text, uchar);
txt_move_left(text, 0);
text->undo_pos--;
break;
case UNDO_DBLOCK:
/* length of the string in the buffer */
linep = txt_undo_read_uint32(text->undo_buf, &text->undo_pos);
buf = MEM_mallocN(linep + 1, "dblock buffer");
for (i = 0; i < linep; i++) {
buf[(linep - 1) - i] = text->undo_buf[text->undo_pos];
text->undo_pos--;
}
buf[i] = 0;
/* skip over the length that was stored again */
text->undo_pos -= 4;
/* Get the cursor positions */
txt_undo_read_cursors(text->undo_buf, &text->undo_pos, &curln, &curc, &selln, &selc);
/* move cur to location that needs buff inserted */
txt_move_to(text, curln, curc, 0);
txt_insert_buf(text, buf);
MEM_freeN(buf);
/* restore the cursors */
txt_move_to(text, curln, curc, 0);
txt_move_to(text, selln, selc, 1);
text->undo_pos--;
break;
case UNDO_IBLOCK:
/* length of the string in the buffer */
linep = txt_undo_read_uint32(text->undo_buf, &text->undo_pos);
/* txt_backspace_char removes utf8-characters, not bytes */
buf = MEM_mallocN(linep + 1, "iblock buffer");
for (i = 0; i < linep; i++) {
buf[(linep - 1) - i] = text->undo_buf[text->undo_pos];
text->undo_pos--;
}
buf[i] = 0;
linep = BLI_strlen_utf8(buf);
MEM_freeN(buf);
/* skip over the length that was stored again */
text->undo_pos -= 4;
/* get and restore the cursors */
txt_undo_read_cursors(text->undo_buf, &text->undo_pos, &curln, &curc, &selln, &selc);
txt_move_to(text, curln, curc, 0);
txt_move_to(text, selln, selc, 1);
if ((curln == selln) && (curc == selc)) {
/* disable tabs to spaces since moving right may involve skipping multiple spaces */
prev_flags = text->flags;
text->flags &= ~TXT_TABSTOSPACES;
for (i = 0; i < linep; i++)
txt_move_right(text, 1);
text->flags = prev_flags;
}
txt_delete_selected(text);
text->undo_pos--;
break;
case UNDO_INDENT:
case UNDO_UNINDENT:
case UNDO_COMMENT:
case UNDO_UNCOMMENT:
case UNDO_DUPLICATE:
case UNDO_MOVE_LINES_UP:
case UNDO_MOVE_LINES_DOWN:
/* get and restore the cursors */
txt_undo_read_cursors(text->undo_buf, &text->undo_pos, &curln, &curc, &selln, &selc);
txt_move_to(text, curln, curc, 0);
txt_move_to(text, selln, selc, 1);
if (op == UNDO_INDENT) {
txt_unindent(text);
}
else if (op == UNDO_UNINDENT) {
txt_indent(text);
}
else if (op == UNDO_COMMENT) {
txt_uncomment(text);
}
else if (op == UNDO_UNCOMMENT) {
txt_comment(text);
}
else if (op == UNDO_DUPLICATE) {
txt_delete_line(text, text->curl->next);
}
else if (op == UNDO_MOVE_LINES_UP) {
txt_move_lines(text, TXT_MOVE_LINE_DOWN);
}
else if (op == UNDO_MOVE_LINES_DOWN) {
txt_move_lines(text, TXT_MOVE_LINE_UP);
}
text->undo_pos--;
break;
default:
//XXX error("Undo buffer error - resetting");
text->undo_pos = -1;
break;
}
undoing = 0;
}
void txt_do_redo(Text *text)
{
char op;
char *buf;
unsigned int linep;
unsigned short charp;
unsigned int uchar;
unsigned int curln, selln;
unsigned short curc, selc;
text->undo_pos++;
op = text->undo_buf[text->undo_pos];
if (!op) {
text->undo_pos--;
return;
}
undoing = 1;
switch (op) {
case UNDO_INSERT_1:
case UNDO_INSERT_2:
case UNDO_INSERT_3:
case UNDO_INSERT_4:
text->undo_pos++;
/* get and restore the cursors */
txt_redo_read_cur(text->undo_buf, &text->undo_pos, &curln, &curc);
txt_move_to(text, curln, curc, 0);
txt_move_to(text, curln, curc, 1);
charp = op - UNDO_INSERT_1 + 1;
uchar = txt_redo_read_unicode(text->undo_buf, &text->undo_pos, charp);
txt_add_char(text, uchar);
break;
case UNDO_BS_1:
case UNDO_BS_2:
case UNDO_BS_3:
case UNDO_BS_4:
text->undo_pos++;
/* get and restore the cursors */
txt_redo_read_cur(text->undo_buf, &text->undo_pos, &curln, &curc);
txt_move_to(text, curln, curc, 0);
txt_move_to(text, curln, curc, 1);
text->undo_pos += op - UNDO_BS_1 + 1;
/* move right so we backspace the correct char */
txt_move_right(text, 0);
txt_backspace_char(text);
break;
case UNDO_DEL_1:
case UNDO_DEL_2:
case UNDO_DEL_3:
case UNDO_DEL_4:
text->undo_pos++;
/* get and restore the cursors */
txt_redo_read_cur(text->undo_buf, &text->undo_pos, &curln, &curc);
txt_move_to(text, curln, curc, 0);
txt_move_to(text, curln, curc, 1);
text->undo_pos += op - UNDO_DEL_1 + 1;
txt_delete_char(text);
break;
case UNDO_DBLOCK:
text->undo_pos++;
/* get and restore the cursors */
txt_redo_read_cursors(text->undo_buf, &text->undo_pos, &curln, &curc, &selln, &selc);
txt_move_to(text, curln, curc, 0);
txt_move_to(text, selln, selc, 1);
/* length of the block */
linep = txt_redo_read_uint32(text->undo_buf, &text->undo_pos);
text->undo_pos += linep;
/* skip over the length that was stored again */
text->undo_pos += 4;
txt_delete_sel(text);
break;
case UNDO_IBLOCK:
text->undo_pos++;
/* get and restore the cursors */
txt_redo_read_cursors(text->undo_buf, &text->undo_pos, &curln, &curc, &selln, &selc);
txt_move_to(text, curln, curc, 0);
txt_move_to(text, curln, curc, 1);
/* length of the block */
linep = txt_redo_read_uint32(text->undo_buf, &text->undo_pos);
buf = MEM_mallocN(linep + 1, "iblock buffer");
memcpy(buf, &text->undo_buf[text->undo_pos], linep);
text->undo_pos += linep;
buf[linep] = 0;
txt_insert_buf(text, buf);
MEM_freeN(buf);
/* skip over the length that was stored again */
text->undo_pos += 4;
break;
case UNDO_INDENT:
case UNDO_UNINDENT:
case UNDO_COMMENT:
case UNDO_UNCOMMENT:
case UNDO_DUPLICATE:
case UNDO_MOVE_LINES_UP:
case UNDO_MOVE_LINES_DOWN:
text->undo_pos++;
/* get and restore the cursors */
txt_redo_read_cursors(text->undo_buf, &text->undo_pos, &curln, &curc, &selln, &selc);
txt_move_to(text, curln, curc, 0);
txt_move_to(text, selln, selc, 1);
if (op == UNDO_INDENT) {
txt_indent(text);
}
else if (op == UNDO_UNINDENT) {
txt_unindent(text);
}
else if (op == UNDO_COMMENT) {
txt_comment(text);
}
else if (op == UNDO_UNCOMMENT) {
txt_uncomment(text);
}
else if (op == UNDO_DUPLICATE) {
txt_duplicate_line(text);
}
else if (op == UNDO_MOVE_LINES_UP) {
/* offset the cursor by + 1 */
txt_move_to(text, curln + 1, curc, 0);
txt_move_to(text, selln + 1, selc, 1);
txt_move_lines(text, TXT_MOVE_LINE_UP);
}
else if (op == UNDO_MOVE_LINES_DOWN) {
/* offset the cursor by - 1 */
txt_move_to(text, curln - 1, curc, 0);
txt_move_to(text, selln - 1, selc, 1);
txt_move_lines(text, TXT_MOVE_LINE_DOWN);
}
/* re-restore the cursors since they got moved when redoing */
txt_move_to(text, curln, curc, 0);
txt_move_to(text, selln, selc, 1);
break;
default:
//XXX error("Undo buffer error - resetting");
text->undo_pos = -1;
break;
}
undoing = 0;
}
/**************************/
/* Line editing functions */
/**************************/
void txt_split_curline(Text *text)
{
TextLine *ins;
char *left, *right;
if (!text) return;
if (!text->curl) return;
txt_delete_sel(text);
if (!undoing) txt_undo_add_charop(text, UNDO_INSERT_1, '\n');
/* Make the two half strings */
left = MEM_mallocN(text->curc + 1, "textline_string");
if (text->curc) memcpy(left, text->curl->line, text->curc);
left[text->curc] = 0;
right = MEM_mallocN(text->curl->len - text->curc + 1, "textline_string");
memcpy(right, text->curl->line + text->curc, text->curl->len - text->curc + 1);
MEM_freeN(text->curl->line);
if (text->curl->format) MEM_freeN(text->curl->format);
/* Make the new TextLine */
ins = MEM_mallocN(sizeof(TextLine), "textline");
ins->line = left;
ins->format = NULL;
ins->len = text->curc;
text->curl->line = right;
text->curl->format = NULL;
text->curl->len = text->curl->len - text->curc;
BLI_insertlinkbefore(&text->lines, text->curl, ins);
text->curc = 0;
txt_make_dirty(text);
txt_clean_text(text);
txt_pop_sel(text);
}
static void txt_delete_line(Text *text, TextLine *line)
{
if (!text) return;
if (!text->curl) return;
BLI_remlink(&text->lines, line);
if (line->line) MEM_freeN(line->line);
if (line->format) MEM_freeN(line->format);
MEM_freeN(line);
txt_make_dirty(text);
txt_clean_text(text);
}
static void txt_combine_lines(Text *text, TextLine *linea, TextLine *lineb)
{
char *tmp, *s;
if (!text) return;
if (!linea || !lineb) return;
tmp = MEM_mallocN(linea->len + lineb->len + 1, "textline_string");
s = tmp;
s += BLI_strcpy_rlen(s, linea->line);
s += BLI_strcpy_rlen(s, lineb->line);
(void)s;
make_new_line(linea, tmp);
txt_delete_line(text, lineb);
txt_make_dirty(text);
txt_clean_text(text);
}
void txt_duplicate_line(Text *text)
{
TextLine *textline;
if (!text || !text->curl) return;
if (text->curl == text->sell) {
textline = txt_new_line(text->curl->line);
BLI_insertlinkafter(&text->lines, text->curl, textline);
txt_make_dirty(text);
txt_clean_text(text);
if (!undoing) txt_undo_add_op(text, UNDO_DUPLICATE);
}
}
void txt_delete_char(Text *text)
{
unsigned int c = '\n';
if (!text) return;
if (!text->curl) return;
if (txt_has_sel(text)) { /* deleting a selection */
txt_delete_sel(text);
txt_make_dirty(text);
return;
}
else if (text->curc == text->curl->len) { /* Appending two lines */
if (text->curl->next) {
txt_combine_lines(text, text->curl, text->curl->next);
txt_pop_sel(text);
}
else
return;
}
else { /* Just deleting a char */
size_t c_len = 0;
c = BLI_str_utf8_as_unicode_and_size(text->curl->line + text->curc, &c_len);
memmove(text->curl->line + text->curc, text->curl->line + text->curc + c_len, text->curl->len - text->curc - c_len + 1);
text->curl->len -= c_len;
txt_pop_sel(text);
}
txt_make_dirty(text);
txt_clean_text(text);
if (!undoing) txt_undo_add_charop(text, UNDO_DEL_1, c);
}
void txt_delete_word(Text *text)
{
txt_jump_right(text, true, true);
txt_delete_sel(text);
}
void txt_backspace_char(Text *text)
{
unsigned int c = '\n';
if (!text) return;
if (!text->curl) return;
if (txt_has_sel(text)) { /* deleting a selection */
txt_delete_sel(text);
txt_make_dirty(text);
return;
}
else if (text->curc == 0) { /* Appending two lines */
if (!text->curl->prev) return;
text->curl = text->curl->prev;
text->curc = text->curl->len;
txt_combine_lines(text, text->curl, text->curl->next);
txt_pop_sel(text);
}
else { /* Just backspacing a char */
size_t c_len = 0;
char *prev = BLI_str_prev_char_utf8(text->curl->line + text->curc);
c = BLI_str_utf8_as_unicode_and_size(prev, &c_len);
/* source and destination overlap, don't use memcpy() */
memmove(text->curl->line + text->curc - c_len,
text->curl->line + text->curc,
text->curl->len - text->curc + 1);
text->curl->len -= c_len;
text->curc -= c_len;
txt_pop_sel(text);
}
txt_make_dirty(text);
txt_clean_text(text);
if (!undoing) txt_undo_add_charop(text, UNDO_BS_1, c);
}
void txt_backspace_word(Text *text)
{
txt_jump_left(text, true, true);
txt_delete_sel(text);
}
/* Max spaces to replace a tab with, currently hardcoded to TXT_TABSIZE = 4.
* Used by txt_convert_tab_to_spaces, indent and unindent.
* Remember to change this string according to max tab size */
static char tab_to_spaces[] = " ";
static void txt_convert_tab_to_spaces(Text *text)
{
/* sb aims to pad adjust the tab-width needed so that the right number of spaces
* is added so that the indention of the line is the right width (i.e. aligned
* to multiples of TXT_TABSIZE)
*/
char *sb = &tab_to_spaces[text->curc % TXT_TABSIZE];
txt_insert_buf(text, sb);
}
static bool txt_add_char_intern(Text *text, unsigned int add, bool replace_tabs)
{
char *tmp, ch[BLI_UTF8_MAX];
size_t add_len;
if (!text) return 0;
if (!text->curl) return 0;
if (add == '\n') {
txt_split_curline(text);
return 1;
}
/* insert spaces rather than tabs */
if (add == '\t' && replace_tabs) {
txt_convert_tab_to_spaces(text);
return 1;
}
txt_delete_sel(text);
if (!undoing) txt_undo_add_charop(text, UNDO_INSERT_1, add);
add_len = BLI_str_utf8_from_unicode(add, ch);
tmp = MEM_mallocN(text->curl->len + add_len + 1, "textline_string");
memcpy(tmp, text->curl->line, text->curc);
memcpy(tmp + text->curc, ch, add_len);
memcpy(tmp + text->curc + add_len, text->curl->line + text->curc, text->curl->len - text->curc + 1);
make_new_line(text->curl, tmp);
text->curc += add_len;
txt_pop_sel(text);
txt_make_dirty(text);
txt_clean_text(text);
return 1;
}
bool txt_add_char(Text *text, unsigned int add)
{
return txt_add_char_intern(text, add, (text->flags & TXT_TABSTOSPACES) != 0);
}
bool txt_add_raw_char(Text *text, unsigned int add)
{
return txt_add_char_intern(text, add, 0);
}
void txt_delete_selected(Text *text)
{
txt_delete_sel(text);
txt_make_dirty(text);
}
bool txt_replace_char(Text *text, unsigned int add)
{
unsigned int del;
size_t del_size = 0, add_size;
char ch[BLI_UTF8_MAX];
if (!text) return 0;
if (!text->curl) return 0;
/* If text is selected or we're at the end of the line just use txt_add_char */
if (text->curc == text->curl->len || txt_has_sel(text) || add == '\n') {
return txt_add_char(text, add);
}
del = BLI_str_utf8_as_unicode_and_size(text->curl->line + text->curc, &del_size);
add_size = BLI_str_utf8_from_unicode(add, ch);
if (add_size > del_size) {
char *tmp = MEM_mallocN(text->curl->len + add_size - del_size + 1, "textline_string");
memcpy(tmp, text->curl->line, text->curc);
memcpy(tmp + text->curc + add_size, text->curl->line + text->curc + del_size, text->curl->len - text->curc - del_size + 1);
MEM_freeN(text->curl->line);
text->curl->line = tmp;
}
else if (add_size < del_size) {
char *tmp = text->curl->line;
memmove(tmp + text->curc + add_size, tmp + text->curc + del_size, text->curl->len - text->curc - del_size + 1);
}
memcpy(text->curl->line + text->curc, ch, add_size);
text->curc += add_size;
text->curl->len += add_size - del_size;
txt_pop_sel(text);
txt_make_dirty(text);
txt_clean_text(text);
/* Should probably create a new op for this */
if (!undoing) {
txt_undo_add_charop(text, UNDO_INSERT_1, add);
text->curc -= add_size;
txt_pop_sel(text);
txt_undo_add_charop(text, UNDO_DEL_1, del);
text->curc += add_size;
txt_pop_sel(text);
}
return 1;
}
void txt_indent(Text *text)
{
int len, num, curc_old;
char *tmp;
const char *add = "\t";
int indentlen = 1;
/* hardcoded: TXT_TABSIZE = 4 spaces: */
int spaceslen = TXT_TABSIZE;
if (ELEM3(NULL, text, text->curl, text->sell)) {
return;
}
/* insert spaces rather than tabs */
if (text->flags & TXT_TABSTOSPACES) {
add = tab_to_spaces;
indentlen = spaceslen;
}
curc_old = text->curc;
num = 0;
while (true) {
/* don't indent blank lines */
if (text->curl->len != 0) {
tmp = MEM_mallocN(text->curl->len + indentlen + 1, "textline_string");
text->curc = 0;
if (text->curc) memcpy(tmp, text->curl->line, text->curc); /* XXX never true, check prev line */
memcpy(tmp + text->curc, add, indentlen);
len = text->curl->len - text->curc;
if (len > 0) memcpy(tmp + text->curc + indentlen, text->curl->line + text->curc, len);
tmp[text->curl->len + indentlen] = 0;
make_new_line(text->curl, tmp);
text->curc += indentlen;
txt_make_dirty(text);
txt_clean_text(text);
}
if (text->curl == text->sell) {
text->selc += indentlen;
break;
}
else {
text->curl = text->curl->next;
num++;
}
}
if (!curc_old) text->curc = 0;
else text->curc = curc_old + indentlen;
while (num > 0) {
text->curl = text->curl->prev;
num--;
}
if (!undoing) {
txt_undo_add_op(text, UNDO_INDENT);
}
}
void txt_unindent(Text *text)
{
int num = 0;
const char *remove = "\t";
int indentlen = 1;
bool unindented_first = false;
/* hardcoded: TXT_TABSIZE = 4 spaces: */
int spaceslen = TXT_TABSIZE;
if (ELEM3(NULL, text, text->curl, text->sell)) {
return;
}
/* insert spaces rather than tabs */
if (text->flags & TXT_TABSTOSPACES) {
remove = tab_to_spaces;
indentlen = spaceslen;
}
while (true) {
int i = 0;
if (BLI_strncasecmp(text->curl->line, remove, indentlen) == 0) {
if (num == 0)
unindented_first = true;
while (i < text->curl->len) {
text->curl->line[i] = text->curl->line[i + indentlen];
i++;
}
text->curl->len -= indentlen;
}
txt_make_dirty(text);
txt_clean_text(text);
if (text->curl == text->sell) {
if (i > 0) text->selc = MAX2(text->selc - indentlen, 0);
break;
}
else {
text->curl = text->curl->next;
num++;
}
}
if (unindented_first) text->curc = MAX2(text->curc - indentlen, 0);
while (num > 0) {
text->curl = text->curl->prev;
num--;
}
if (!undoing) {
txt_undo_add_op(text, UNDO_UNINDENT);
}
}
void txt_comment(Text *text)
{
int len, num;
char *tmp;
char add = '#';
if (!text) return;
if (!text->curl) return;
if (!text->sell) return; // Need to change this need to check if only one line is selected to more than one
num = 0;
while (true) {
tmp = MEM_mallocN(text->curl->len + 2, "textline_string");
text->curc = 0;
if (text->curc) memcpy(tmp, text->curl->line, text->curc);
tmp[text->curc] = add;
len = text->curl->len - text->curc;
if (len > 0) memcpy(tmp + text->curc + 1, text->curl->line + text->curc, len);
tmp[text->curl->len + 1] = 0;
make_new_line(text->curl, tmp);
text->curc++;
txt_make_dirty(text);
txt_clean_text(text);
if (text->curl == text->sell) {
text->selc = text->sell->len;
break;
}
else {
text->curl = text->curl->next;
num++;
}
}
text->curc = 0;
while (num > 0) {
text->curl = text->curl->prev;
num--;
}
if (!undoing) {
txt_undo_add_op(text, UNDO_COMMENT);
}
}
void txt_uncomment(Text *text)
{
int num = 0;
char remove = '#';
if (!text) return;
if (!text->curl) return;
if (!text->sell) return;
while (true) {
int i = 0;
if (text->curl->line[i] == remove) {
while (i < text->curl->len) {
text->curl->line[i] = text->curl->line[i + 1];
i++;
}
text->curl->len--;
}
txt_make_dirty(text);
txt_clean_text(text);
if (text->curl == text->sell) {
text->selc = text->sell->len;
break;
}
else {
text->curl = text->curl->next;
num++;
}
}
text->curc = 0;
while (num > 0) {
text->curl = text->curl->prev;
num--;
}
if (!undoing) {
txt_undo_add_op(text, UNDO_UNCOMMENT);
}
}
void txt_move_lines(struct Text *text, const int direction)
{
TextLine *line_other;
BLI_assert(ELEM(direction, TXT_MOVE_LINE_UP, TXT_MOVE_LINE_DOWN));
if (!text || !text->curl || !text->sell) return;
txt_order_cursors(text, false);
line_other = (direction == TXT_MOVE_LINE_DOWN) ? text->sell->next : text->curl->prev;
if (!line_other) return;
BLI_remlink(&text->lines, line_other);
if (direction == TXT_MOVE_LINE_DOWN) {
BLI_insertlinkbefore(&text->lines, text->curl, line_other);
}
else {
BLI_insertlinkafter(&text->lines, text->sell, line_other);
}
txt_make_dirty(text);
txt_clean_text(text);
if (!undoing) {
txt_undo_add_op(text, (direction == TXT_MOVE_LINE_DOWN) ? UNDO_MOVE_LINES_DOWN : UNDO_MOVE_LINES_UP);
}
}
int txt_setcurr_tab_spaces(Text *text, int space)
{
int i = 0;
int test = 0;
const char *word = ":";
const char *comm = "#";
const char indent = (text->flags & TXT_TABSTOSPACES) ? ' ' : '\t';
static const char *back_words[] = {"return", "break", "continue", "pass", "yield", NULL};
if (!text->curl) return 0;
while (text->curl->line[i] == indent) {
//we only count those tabs/spaces that are before any text or before the curs;
if (i == text->curc) {
return i;
}
else {
i++;
}
}
if (strstr(text->curl->line, word)) {
/* if we find a ':' on this line, then add a tab but not if it is:
* 1) in a comment
* 2) within an identifier
* 3) after the cursor (text->curc), i.e. when creating space before a function def [#25414]
*/
int a;
bool is_indent = false;
for (a = 0; (a < text->curc) && (text->curl->line[a] != '\0'); a++) {
char ch = text->curl->line[a];
if (ch == '#') {
break;
}
else if (ch == ':') {
is_indent = 1;
}
else if (ch != ' ' && ch != '\t') {
is_indent = 0;
}
}
if (is_indent) {
i += space;
}
}
for (test = 0; back_words[test]; test++) {
/* if there are these key words then remove a tab because we are done with the block */
if (strstr(text->curl->line, back_words[test]) && i > 0) {
if (strcspn(text->curl->line, back_words[test]) < strcspn(text->curl->line, comm)) {
i -= space;
}
}
}
return i;
}
/*******************************/
/* Character utility functions */
/*******************************/
int text_check_bracket(const char ch)
{
int a;
char opens[] = "([{";
char close[] = ")]}";
for (a = 0; a < (sizeof(opens) - 1); a++) {
if (ch == opens[a])
return a + 1;
else if (ch == close[a])
return -(a + 1);
}
return 0;
}
/* TODO, have a function for operators - http://docs.python.org/py3k/reference/lexical_analysis.html#operators */
bool text_check_delim(const char ch)
{
int a;
char delims[] = "():\"\' ~!%^&*-+=[]{};/<>|.#\t,@";
for (a = 0; a < (sizeof(delims) - 1); a++) {
if (ch == delims[a])
return 1;
}
return 0;
}
bool text_check_digit(const char ch)
{
if (ch < '0') return 0;
if (ch <= '9') return 1;
return 0;
}
bool text_check_identifier(const char ch)
{
if (ch < '0') return 0;
if (ch <= '9') return 1;
if (ch < 'A') return 0;
if (ch <= 'Z' || ch == '_') return 1;
if (ch < 'a') return 0;
if (ch <= 'z') return 1;
return 0;
}
bool text_check_identifier_nodigit(const char ch)
{
if (ch <= '9') return 0;
if (ch < 'A') return 0;
if (ch <= 'Z' || ch == '_') return 1;
if (ch < 'a') return 0;
if (ch <= 'z') return 1;
return 0;
}
#ifndef WITH_PYTHON
int text_check_identifier_unicode(const unsigned int ch)
{
return (ch < 255 && text_check_identifier((unsigned int)ch));
}
int text_check_identifier_nodigit_unicode(const unsigned int ch)
{
return (ch < 255 && text_check_identifier_nodigit((char)ch));
}
#endif /* WITH_PYTHON */
bool text_check_whitespace(const char ch)
{
if (ch == ' ' || ch == '\t' || ch == '\r' || ch == '\n')
return 1;
return 0;
}
int text_find_identifier_start(const char *str, int i)
{
if (UNLIKELY(i <= 0)) {
return 0;
}
while (i--) {
if (!text_check_identifier(str[i])) {
break;
}
}
i++;
return i;
}
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