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Copy pathLine.c
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438 lines (389 loc) · 12.8 KB
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#define _GNU_SOURCE
#include <stdlib.h>
#include <string.h>
#include <sys/param.h>
#include <ctype.h>
#include "Prototypes.h"
//#needs List
//#needs Text
/*{
struct LineClass_ {
ListItemClass super;
};
struct Line_ {
ListItem super;
Text text;
HighlightContext* context;
};
extern LineClass LineType;
#define Line_chars(this) (Text_chars((this)->text))
#define Line_toString(this) (Text_toString((this)->text))
#define Line_bytes(this) (Text_bytes((this)->text))
}*/
LineClass LineType = {
.super = {
.super = {
.size = sizeof(Line),
.display = Line_display,
.equals = Line_equals,
.delete = Line_delete
}
}
};
Line* Line_new(List* list, Text text, HighlightContext* context) {
Line* this = Pool_allocate(list->pool);
Bless(Line);
Call0(ListItem, init, this);
this->text = text;
this->context = context;
//FIXME// assert(this->data[this->bytes] == '\0');
return this;
}
void Line_delete(Object* cast) {
Line* this = (Line*) cast;
Text_prune(&(this->text));
Pool_free(this->super.list->pool, this);
}
int Line_charAt(Line* this, int n) {
return Text_at(this->text, n);
}
void Line_updateContext(Line* this) {
// temporarily disable selection
Buffer* buffer = (Buffer*)(this->super.list->data);
bool selecting = buffer->selecting;
buffer->selecting = false;
Line_display((Object*)this, NULL);
buffer->selecting = selecting;
}
static void paintSelection(Line* this, int y, char* out, int* outIdx, int* attrs, int tabSize, int xFrom, int yFrom, int xTo, int yTo) {
if ((y >= yFrom && y <= yTo) || (y >= yTo && y <= yFrom)) {
int from, to;
if (yFrom > yTo || (yFrom == yTo && xFrom > xTo)) {
int tmp = yFrom; yFrom = yTo; yTo = tmp;
tmp = xFrom; xFrom = xTo; xTo = tmp;
}
if (y == yFrom && y == yTo) {
from = Text_cellsUntil(this->text, xFrom, tabSize);
to = Text_cellsUntil(this->text, xTo, tabSize);
} else if (y == yFrom && y < yTo) {
from = Text_cellsUntil(this->text, xFrom, tabSize);
out[(*outIdx)++] = ' ';
out[(*outIdx)] = '\0';
to = *outIdx;
} else if (y > yFrom && y == yTo) {
from = 0;
to = Text_cellsUntil(this->text, xTo, tabSize);
} else { // if (y > yFrom && y < yTo) {
from = 0;
out[(*outIdx)++] = ' ';
out[(*outIdx)] = '\0';
to = *outIdx;
}
for (int i = from; i < to; i++) {
attrs[i] = CRT_colors[SelectionColor];
}
}
}
static bool allSpace(char* s) {
while(*s) {
if (!isblank(*s)) {
return false;
}
s++;
}
return true;
}
static void highlightAllOccurrences(Buffer* buffer, int y, Text outText, int* attrs) {
int minX = MIN(buffer->selectXto, buffer->selectXfrom);
int blockLen;
char* block = Buffer_copyBlock(buffer, &blockLen);
if (!block) {
return;
}
if (allSpace(block)) {
free(block);
return;
}
Text selText = Text_new(block);
int from = 0;
for (;;) {
int found = Text_indexOfFrom(outText, selText, from);
if (found == -1) {
break;
}
if (!(y == buffer->selectYfrom && found == minX)) {
for (int i = 0; i < Text_chars(selText); i++) {
attrs[found + i] = CRT_colors[HighlightColor];
}
}
from = found + 1;
}
free(block);
}
void Line_display(Object* cast, RichString* str) {
Line* this = (Line*) cast;
Buffer* buffer = (Buffer*)(this->super.list->data);
int scrollH = buffer->panel->scrollH;
int y = buffer->panel->displaying;
Highlight* hl = buffer->hl;
const int tabSize = buffer->tabSize;
int hlAttrs[this->text.bytes];
const int sizeAttrs = ((this->text.chars + 1) * tabSize) * sizeof(int);
int* attrs = malloc(sizeAttrs);
memset(attrs, 0, sizeAttrs);
int outIdx = 0;
char out[this->text.bytes * tabSize + 2];
HighlightContext* context = this->super.prev
? ((Line*)this->super.prev)->context
: hl->mainContext;
Highlight_setContext(hl, context);
Highlight_setAttrs(hl, this->text.data, hlAttrs, this->text.bytes, y + 1);
const char* start = Text_toString(this->text);
int attrIdx = 0;
for (const char* curr = start; *curr; ) {
int inIdx = curr - start;
if (*curr == '\t') {
int tab = tabSize - (outIdx % tabSize);
for (int i = 0; i < tab; i++) {
attrs[attrIdx++] = hlAttrs[inIdx];
out[outIdx++] = ' ';
}
curr++;
} else if (*curr >= 0 && *curr < 32) {
attrs[attrIdx++] = CRT_colors[AlertColor];
out[outIdx++] = *curr + 'A' - 1;
curr++;
} else {
attrs[attrIdx++] = hlAttrs[inIdx];
int offset = UTF8_copyChar(out + outIdx, curr);
outIdx += offset;
curr += offset;
}
}
out[outIdx] = '\0';
if (buffer->bracketY == y && buffer->bracketX < attrIdx) {
attrs[buffer->bracketX] = CRT_colors[BracketColor];
}
Text outText = Text_new(out);
if (buffer->nCursors > 0) {
for (int i = 0; i < buffer->nCursors; i++) {
if (buffer->selecting) {
paintSelection(this, y, out, &outIdx, attrs, tabSize, buffer->cursors[i].selectXfrom, buffer->cursors[i].selectYfrom, buffer->cursors[i].selectXto, buffer->cursors[i].selectYto);
}
if (buffer->cursors[i].y == y) {
int cx = buffer->cursors[i].x;
int px = Line_widthUntil(this, cx, buffer->tabSize);
attrs[px] = CRT_colors[AlertColor];
if (px == UTF8_chars(out)) {
out[outIdx++] = ' ';
out[outIdx] = '\0';
}
}
}
} else {
if (buffer->selecting) {
paintSelection(this, y, out, &outIdx, attrs, tabSize, buffer->selectXfrom, buffer->selectYfrom, buffer->selectXto, buffer->selectYto);
if (buffer->selectYfrom == buffer->selectYto && buffer->selectXto != buffer->selectXfrom) {
highlightAllOccurrences(buffer, y, outText, attrs);
}
}
}
outText = Text_new(out);
if (str && Text_chars(outText) >= scrollH) {
RichString_appendn(str, 0, Text_stringAt(outText, scrollH), Text_chars(outText) - scrollH);
RichString_paintAttrs(str, attrs + scrollH);
}
this->context = Highlight_getContext(hl);
free(attrs);
}
int Line_widthUntil(Line* this, int n, int tabSize) {
return Text_cellsUntil(this->text, n, tabSize);
}
bool Line_equals(const Object* o1, const Object* o2) {
Line* l1 = (Line*) o1;
Line* l2 = (Line*) o2;
if (Text_bytes(l1->text) != Text_bytes(l2->text))
return false;
return (strcmp(Text_toString(l1->text), Text_toString(l2->text)) == 0);
}
void Line_insertChar(Line* this, int at, wchar_t ch) {
Text_insertChar(&(this->text), at, ch);
}
void Line_deleteChars(Line* this, int at, int n) {
Text_deleteChars(&(this->text), at, n);
}
/*
inline int Line_getIndentWidth(Line* this, int tabSize) {
int indentWidth = 0;
// UTF-8: indent chars are always ASCII
for (int i = 0; i < Text_chars(this->text) && isblank(this->text.data[i]); i++) {
if (this->text.data[i] == '\t')
indentWidth += tabSize - (indentWidth % tabSize);
else
indentWidth++;
}
return indentWidth;
}
*/
int Line_breakAt(Line* this, int at, bool doIndent) {
assert(at >= 0 && at <= Text_chars(this->text));
int indentBytes = 0;
if (doIndent) {
// UTF-8: indent chars are always ASCII
for (; indentBytes < Text_chars(this->text) && isblank(this->text.data[indentBytes]) && indentBytes < at; indentBytes++);
}
Text new = Text_breakIndenting(&(this->text), at, indentBytes);
Line* newLine = Line_new(this->super.list, new, this->context);
ListItem_addAfter((ListItem*) this, (ListItem*) newLine);
return indentBytes;
}
void Line_joinNext(Line* this) {
assert(this->super.next);
Line* next = (Line*) this->super.next;
(void) Text_strcat(&(this->text), next->text);
ListItem_remove((ListItem*) next);
}
static void lineToBufferFromTo(StringBuffer* str, Line* l, int xFrom, int xTo) {
const char* from = Text_stringAt(l->text, xFrom);
const char* to = Text_stringAt(l->text, xTo);
StringBuffer_addN(str, from, to - from);
}
static void lineToBufferFrom(StringBuffer* str, Line* l, int xFrom) {
const char* from = Text_stringAt(l->text, xFrom);
StringBuffer_addN(str, from, Text_toString(l->text) + Text_bytes(l->text) - from);
}
static void lineToBufferTo(StringBuffer* str, Line* l, int xTo) {
StringBuffer_addN(str, Text_toString(l->text), Text_bytesUntil(l->text, xTo));
}
static void lineToBuffer(StringBuffer* str, Line* l) {
StringBuffer_addN(str, Text_toString(l->text), Text_bytes(l->text));
}
static StringBuffer* getBlock(Line* this, int lines, int xFrom, int xTo, bool delete) {
assert(Text_chars(this->text) >= xFrom);
StringBuffer* str = StringBuffer_new(NULL);
Line* l = this;
Line* first = this;
if (lines == 1) {
lineToBufferFromTo(str, l, xFrom, xTo);
if (delete) Text_deleteChars(&(l->text), xFrom, xTo - xFrom);
} else {
if (xFrom > 0) {
lineToBufferFrom(str, l, xFrom);
StringBuffer_addChar(str, '\n');
if (delete) Text_deleteChars(&(l->text), xFrom, Text_chars(l->text) - xFrom);
} else {
lineToBuffer(str, l);
StringBuffer_addChar(str, '\n');
if (delete) Text_prune(&(l->text));
}
l = (Line*) l->super.next;
for (int i = 2; i < lines; i++) {
Line* next = (Line*) l->super.next;
lineToBuffer(str, l);
StringBuffer_addChar(str, '\n');
if (delete) ListItem_remove((ListItem*) l);
l = next;
}
if (xTo < Text_chars(l->text)) {
lineToBufferTo(str, l, xTo);
if (delete) Text_deleteChars(&(l->text), 0, xTo);
} else {
lineToBuffer(str, l);
if (delete) Text_prune(&(l->text));
}
if (delete) Line_joinNext(first);
}
assert(this->text[this->len] == '\0');
return str;
}
StringBuffer* Line_deleteBlock(Line* this, int lines, int xFrom, int xTo) {
return getBlock(this, lines, xFrom, xTo, true);
}
StringBuffer* Line_copyBlock(Line* this, int lines, int xFrom, int xTo) {
return getBlock(this, lines, xFrom, xTo, false);
}
void Line_insertTextAt(Line* this, Text text, int at) {
Text_insert(&(this->text), at, text);
}
void Line_indent(Line* this, int lines, int indentSpaces) {
char spacer = ' ';
int width = indentSpaces;
if (width == 0) {
width = 1;
spacer = '\t';
}
char indent[width + 1];
for (int i = 0; i < width; i++)
indent[i] = spacer;
indent[width] = '\0';
Line_insertTextAt(this, Text_new(indent), 0);
if (lines > 1) {
assert(this->super.next);
Line* next = (Line*) this->super.next;
Line_indent(next, lines - 1, indentSpaces);
}
//FIXME// assert(this->text[this->len] == '\0');
}
int* Line_unindent(Line* this, int lines, int indentSpaces) {
char spacer = ' ';
int width = indentSpaces;
if (width == 0) {
width = 1;
spacer = '\t';
}
int* result = (int*) malloc(sizeof(int*) * lines);
Line* l = this;
for (int c = 0; c < lines; c++) {
assert(l);
// UTF-8: indent chars are always ASCII
int n = MIN(width, Text_chars(l->text));
for (int i = 0; i < n; i++)
if (l->text.data[i] != spacer) {
n = i;
break;
}
result[c] = n;
if (n)
Line_deleteChars(l, 0, n);
l = (Line*) l->super.next;
}
//FIXME// assert(this->text[this->len] == '\0');
return result;
}
bool Line_insertBlock(Line* this, int x, Text block, int* newX, int* newY) {
// newY must contain the current value of y on input
int blockBytes = Text_bytes(block);
char* nl = memchr(block.data, '\n', block.bytes);
Line* at = this;
bool multiline = (nl);
if (!multiline) {
Line_insertTextAt(this, block, x);
*newX = x + Text_chars(block);
} else {
int lineLen = nl - block.data;
Line_breakAt(this, x, 0);
Line* last = (Line*) this->super.next;
Text_insertString(&(this->text), x, block.data, lineLen);
char* walk = ++nl;
(*newY)++;
while ( (nl = memchr(walk, '\n', blockBytes - (walk - block.data) )) ) {
lineLen = nl - walk;
char* text = (char*) malloc(lineLen+1);
text[lineLen] = '\0';
memcpy(text, walk, lineLen);
Line* ne
3CC2
wLine = Line_new(this->super.list, Text_new(text), this->context);
ListItem_addAfter((ListItem*) at, (ListItem*) newLine);
at = newLine;
walk = ++nl;
(*newY)++;
}
if (walk - block.data < blockBytes) {
int lastLineLen = blockBytes - (walk - block.data);
Text_insertString(&(last->text), 0, walk, lastLineLen);
*newX = lastLineLen;
} else {
*newX = 0;
}
}
return multiline;
}