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Add simple syntax highlighting for strings

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This commit is contained in:
Zachary Yedidia
2016-03-12 12:13:57 -05:00
parent bdc0c4644e
commit 38377dd5f8
3 changed files with 31 additions and 7 deletions
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25
src/view.d
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@@ -3,6 +3,8 @@ import cursor;
import buffer;
import clipboard;
import std.array: join;
import std.regex;
import std.conv: to;
import std.stdio;
@@ -103,10 +105,12 @@ class View {
} else if (e.key == Key.enter) {
buf.insert(cursor.loc, "\n");
cursor.loc = cursor.loc + 1;
cursor.lastX = cursor.x;
} else if (e.key == Key.backspace2) {
if (cursor.loc != 0) {
cursor.loc = cursor.loc - 1;
buf.remove(cursor.loc, cursor.loc + 1);
cursor.lastX = cursor.x;
}
}
}
@@ -123,6 +127,7 @@ class View {
void display() {
int x, y;
string[] lines;
if (topline + height > buf.lines.length) {
lines = buf.lines[topline .. $];
@@ -131,6 +136,16 @@ class View {
}
ulong maxLength = to!string(buf.lines.length).length;
xOffset = cast(int) maxLength + 1;
int charNum;
string bufSrc = lines.join("\n");
auto r = regex("\".*?\"");
auto matches = bufSrc.matchAll(r);
Color[ulong] colors;
foreach (m; matches) {
colors[m.pre.length] = Color.blue;
colors[m.pre.length + m.hit.length] = Color.default_;
}
foreach (i, line; lines) {
string lineNum = to!string(i + topline + 1);
foreach (_; 0 .. maxLength - lineNum.length) {
@@ -141,14 +156,20 @@ class View {
}
setCell(cast(int) x++, cast(int) y, ' ', Color.default_ | Attribute.bold, Color.black);
Color c;
foreach (dchar ch; line) {
setCell(cast(int) x++, cast(int) y, ch, Color.default_, Color.default_);
if (charNum in colors) {
c = colors[charNum];
}
setCell(cast(int) x++, cast(int) y, ch, c, Color.default_);
charNum += to!string(ch).length;
}
charNum++;
y++;
x = 0;
}
if (cursor.y - topline < 0 || cursor.y - topline > height) {
if (cursor.y - topline < 0 || cursor.y - topline > height-1) {
hideCursor();
} else {
setCursor(cursor.x + xOffset, cursor.y - topline);