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#include <regex.h>
#include "vis-core.h"
#include "text-motions.h"
#include "text-objects.h"
#include "text-util.h"
/** utility functions */
static char *get_word_at(Text *txt, size_t pos) {
Filerange word = text_object_word(txt, pos);
if (!text_range_valid(&word))
return NULL;
return text_bytes_alloc0(txt, word.start, word.end - word.start);
}
/** motion implementations */
static size_t search_word_forward(Vis *vis, Text *txt, size_t pos) {
char *word = get_word_at(txt, pos);
if (word && !text_regex_compile(vis->search_pattern, word, REG_EXTENDED))
pos = text_search_forward(txt, pos, vis->search_pattern);
free(word);
return pos;
}
static size_t search_word_backward(Vis *vis, Text *txt, size_t pos) {
char *word = get_word_at(txt, pos);
if (word && !text_regex_compile(vis->search_pattern, word, REG_EXTENDED))
pos = text_search_backward(txt, pos, vis->search_pattern);
free(word);
return pos;
}
static size_t search_forward(Vis *vis, Text *txt, size_t pos) {
return text_search_forward(txt, pos, vis->search_pattern);
}
static size_t search_backward(Vis *vis, Text *txt, size_t pos) {
return text_search_backward(txt, pos, vis->search_pattern);
}
static size_t mark_goto(Vis *vis, File *file, size_t pos) {
return text_mark_get(file->text, file->marks[vis->action.mark]);
}
static size_t mark_line_goto(Vis *vis, File *file, size_t pos) {
return text_line_start(file->text, mark_goto(vis, file, pos));
}
static size_t to(Vis *vis, Text *txt, size_t pos) {
char c;
size_t hit = text_line_find_next(txt, pos+1, vis->search_char);
if (!text_byte_get(txt, hit, &c) || c != vis->search_char[0])
return pos;
return hit;
}
static size_t till(Vis *vis, Text *txt, size_t pos) {
size_t hit = to(vis, txt, pos);
if (hit != pos)
return text_char_prev(txt, hit);
return pos;
}
static size_t to_left(Vis *vis, Text *txt, size_t pos) {
char c;
if (pos == 0)
return pos;
size_t hit = text_line_find_prev(txt, pos-1, vis->search_char);
if (!text_byte_get(txt, hit, &c) || c != vis->search_char[0])
return pos;
return hit;
}
static size_t till_left(Vis *vis, Text *txt, size_t pos) {
size_t hit = to_left(vis, txt, pos);
if (hit != pos)
return text_char_next(txt, hit);
return pos;
}
static size_t line(Vis *vis, Text *txt, size_t pos) {
return text_pos_by_lineno(txt, vis->action.count);
}
static size_t column(Vis *vis, Text *txt, size_t pos) {
return text_line_offset(txt, pos, vis->action.count);
}
static size_t view_lines_top(Vis *vis, View *view) {
return view_screenline_goto(view, vis->action.count);
}
static size_t view_lines_middle(Vis *vis, View *view) {
int h = view_height_get(view);
return view_screenline_goto(view, h/2);
}
static size_t view_lines_bottom(Vis *vis, View *view) {
int h = view_height_get(vis->win->view);
return view_screenline_goto(vis->win->view, h - vis->action.count);
}
static size_t window_changelist_next(Vis *vis, Win *win, size_t pos) {
ChangeList *cl = &win->changelist;
Text *txt = win->file->text;
time_t state = text_state(txt);
if (cl->state != state)
cl->index = 0;
else if (cl->index > 0 && pos == cl->pos)
cl->index--;
size_t newpos = text_history_get(txt, cl->index);
if (newpos == EPOS)
cl->index++;
else
cl->pos = newpos;
cl->state = state;
return cl->pos;
}
static size_t window_changelist_prev(Vis *vis, Win *win, size_t pos) {
ChangeList *cl = &win->changelist;
Text *txt = win->file->text;
time_t state = text_state(txt);
if (cl->state != state)
cl->index = 0;
else if (pos == cl->pos)
win->changelist.index++;
size_t newpos = text_history_get(txt, cl->index);
if (newpos == EPOS)
cl->index--;
else
cl->pos = newpos;
cl->state = state;
return cl->pos;
}
static size_t window_jumplist_next(Vis *vis, Win *win, size_t cur) {
while (win->jumplist) {
Mark mark = ringbuf_next(win->jumplist);
if (!mark)
return cur;
size_t pos = text_mark_get(win->file->text, mark);
if (pos != EPOS && pos != cur)
return pos;
}
return cur;
}
static size_t window_jumplist_prev(Vis *vis, Win *win, size_t cur) {
while (win->jumplist) {
Mark mark = ringbuf_prev(win->jumplist);
if (!mark)
return cur;
size_t pos = text_mark_get(win->file->text, mark);
if (pos != EPOS && pos != cur)
return pos;
}
return cur;
}
static size_t window_nop(Vis *vis, Win *win, size_t pos) {
return pos;
}
Movement moves[] = {
[VIS_MOVE_LINE_UP] = { .cur = view_line_up, .type = LINEWISE },
[VIS_MOVE_LINE_DOWN] = { .cur = view_line_down, .type = LINEWISE },
[VIS_MOVE_SCREEN_LINE_UP] = { .cur = view_screenline_up, },
[VIS_MOVE_SCREEN_LINE_DOWN] = { .cur = view_screenline_down, },
[VIS_MOVE_SCREEN_LINE_BEGIN] = { .cur = view_screenline_begin, .type = CHARWISE },
[VIS_MOVE_SCREEN_LINE_MIDDLE] = { .cur = view_screenline_middle, .type = CHARWISE },
[VIS_MOVE_SCREEN_LINE_END] = { .cur = view_screenline_end, .type = CHARWISE|INCLUSIVE },
[VIS_MOVE_LINE_PREV] = { .txt = text_line_prev, },
[VIS_MOVE_LINE_BEGIN] = { .txt = text_line_begin, },
[VIS_MOVE_LINE_START] = { .txt = text_line_start, },
[VIS_MOVE_LINE_FINISH] = { .txt = text_line_finish, .type = INCLUSIVE },
[VIS_MOVE_LINE_LASTCHAR] = { .txt = text_line_lastchar, .type = INCLUSIVE },
[VIS_MOVE_LINE_END] = { .txt = text_line_end, },
[VIS_MOVE_LINE_NEXT] = { .txt = text_line_next, },
[VIS_MOVE_LINE] = { .vis = line, .type = LINEWISE|IDEMPOTENT|JUMP },
[VIS_MOVE_COLUMN] = { .vis = column, .type = CHARWISE|IDEMPOTENT },
[VIS_MOVE_CHAR_PREV] = { .txt = text_char_prev, .type = CHARWISE },
[VIS_MOVE_CHAR_NEXT] = { .txt = text_char_next, .type = CHARWISE },
[VIS_MOVE_LINE_CHAR_PREV] = { .txt = text_line_char_prev, .type = CHARWISE },
[VIS_MOVE_LINE_CHAR_NEXT] = { .txt = text_line_char_next, .type = CHARWISE },
[VIS_MOVE_WORD_START_PREV] = { .txt = text_word_start_prev, .type = CHARWISE },
[VIS_MOVE_WORD_START_NEXT] = { .txt = text_word_start_next, .type = CHARWISE },
[VIS_MOVE_WORD_END_PREV] = { .txt = text_word_end_prev, .type = CHARWISE|INCLUSIVE },
[VIS_MOVE_WORD_END_NEXT] = { .txt = text_word_end_next, .type = CHARWISE|INCLUSIVE },
[VIS_MOVE_LONGWORD_START_PREV] = { .txt = text_longword_start_prev, .type = CHARWISE },
[VIS_MOVE_LONGWORD_START_NEXT] = { .txt = text_longword_start_next, .type = CHARWISE },
[VIS_MOVE_LONGWORD_END_PREV] = { .txt = text_longword_end_prev, .type = CHARWISE|INCLUSIVE },
[VIS_MOVE_LONGWORD_END_NEXT] = { .txt = text_longword_end_next, .type = CHARWISE|INCLUSIVE },
[VIS_MOVE_SENTENCE_PREV] = { .txt = text_sentence_prev, .type = LINEWISE },
[VIS_MOVE_SENTENCE_NEXT] = { .txt = text_sentence_next, .type = LINEWISE },
[VIS_MOVE_PARAGRAPH_PREV] = { .txt = text_paragraph_prev, .type = LINEWISE|JUMP },
[VIS_MOVE_PARAGRAPH_NEXT] = { .txt = text_paragraph_next, .type = LINEWISE|JUMP },
[VIS_MOVE_FUNCTION_START_PREV] = { .txt = text_function_start_prev, .type = LINEWISE|JUMP },
[VIS_MOVE_FUNCTION_START_NEXT] = { .txt = text_function_start_next, .type = LINEWISE|JUMP },
[VIS_MOVE_FUNCTION_END_PREV] = { .txt = text_function_end_prev, .type = LINEWISE|JUMP },
[VIS_MOVE_FUNCTION_END_NEXT] = { .txt = text_function_end_next, .type = LINEWISE|JUMP },
[VIS_MOVE_BRACKET_MATCH] = { .txt = text_bracket_match, .type = INCLUSIVE|JUMP },
[VIS_MOVE_FILE_BEGIN] = { .txt = text_begin, .type = LINEWISE|JUMP },
[VIS_MOVE_FILE_END] = { .txt = text_end, .type = LINEWISE|JUMP },
[VIS_MOVE_LEFT_TO] = { .vis = to_left, },
[VIS_MOVE_RIGHT_TO] = { .vis = to, .type = INCLUSIVE },
[VIS_MOVE_LEFT_TILL] = { .vis = till_left, },
[VIS_MOVE_RIGHT_TILL] = { .vis = till, .type = INCLUSIVE },
[VIS_MOVE_MARK] = { .file = mark_goto, .type = JUMP|IDEMPOTENT },
[VIS_MOVE_MARK_LINE] = { .file = mark_line_goto, .type = LINEWISE|JUMP|IDEMPOTENT },
[VIS_MOVE_SEARCH_WORD_FORWARD] = { .vis = search_word_forward, .type = JUMP },
[VIS_MOVE_SEARCH_WORD_BACKWARD]= { .vis = search_word_backward, .type = JUMP },
[VIS_MOVE_SEARCH_NEXT] = { .vis = search_forward, .type = JUMP },
[VIS_MOVE_SEARCH_PREV] = { .vis = search_backward, .type = JUMP },
[VIS_MOVE_WINDOW_LINE_TOP] = { .view = view_lines_top, .type = LINEWISE|JUMP|IDEMPOTENT },
[VIS_MOVE_WINDOW_LINE_MIDDLE] = { .view = view_lines_middle, .type = LINEWISE|JUMP|IDEMPOTENT },
[VIS_MOVE_WINDOW_LINE_BOTTOM] = { .view = view_lines_bottom, .type = LINEWISE|JUMP|IDEMPOTENT },
[VIS_MOVE_CHANGELIST_NEXT] = { .win = window_changelist_next, .type = INCLUSIVE },
[VIS_MOVE_CHANGELIST_PREV] = { .win = window_changelist_prev, .type = INCLUSIVE },
[VIS_MOVE_JUMPLIST_NEXT] = { .win = window_jumplist_next, .type = INCLUSIVE },
[VIS_MOVE_JUMPLIST_PREV] = { .win = window_jumplist_prev, .type = INCLUSIVE },
[VIS_MOVE_NOP] = { .win = window_nop, .type = IDEMPOTENT },
};
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