Make colors align, add syntax highlight and command mode

include/syntax.h

@@ -0,0 +1,7 @@
+#ifndef SYNTAX_H_
+#define SYNTAX_H_
+
+void update_highlight(row *row);
+char *syntax_to_color(int hl, size_t *len);
+
+#endif

include/vip.h

@@ -14,18 +14,22 @@
 
 /* THEME */
 /* 38 and 48 is reversed as bar's color is reversed */
-#define SURFACE_1_BG "\x1b[38;2;49;50;68m"
-#define BLACK_FG "\x1b[48;2;0;0;0m"
-#define BLACK_BG "\x1b[38;2;0;0;0m"
-#define WHITE_FG "\x1b[48;2;205;214;244m"
-#define BLUE_FG "\x1b[48;2;137;180;250m"
-#define BLUE_BG "\x1b[38;2;137;180;250m"
-#define GREEN_FG "\x1b[48;2;166;227;161m"
-#define GREEN_BG "\x1b[38;2;166;227;161m"
 
-#define NORMAL 0
+#define COLOR_LEN 19
-#define INSERT 1
+
-#define VISUAL 2
+#define SURFACE_1_BG "\x1b[38;2;049;050;068m"
+#define BLACK_FG     "\x1b[48;2;000;000;000m"
+#define BLACK_BG     "\x1b[38;2;000;000;000m"
+#define WHITE_FG     "\x1b[48;2;205;214;244m"
+#define WHITE_BG     "\x1b[38;2;205;214;244m"
+#define BLUE_FG	     "\x1b[48;2;137;180;250m"
+#define BLUE_BG      "\x1b[38;2;137;180;250m"
+#define GREEN_FG     "\x1b[48;2;166;227;161m"
+#define GREEN_BG     "\x1b[38;2;166;227;161m"
+#define PEACH_FG     "\x1b[48;2;250;179;135m"
+#define PEACH_BG     "\x1b[38;2;250;179;135m"
+#define SKY_FG       "\x1b[48;2;137;220;235m"
+#define SKY_BG       "\x1b[38;2;137;220;235m"
 
 #define CTRL_KEY(k) ((k) & 0x1f)
 
@@ -42,16 +46,31 @@ enum keys {
 	PAGE_DOWN
 };
 
+enum modes {
+	NORMAL,
+	INSERT,
+	VISUAL,
+	COMMAND
+};
+
+enum highlight {
+	HL_NORMAL = 0,
+	HL_NUMBER,
+	HL_MATCH,
+	HL_RESET
+};
+
 typedef struct row {
 	int size;
 	int render_size;
 	char *chars;
 	char *render;
+	unsigned char *hl;
 } row;
 
 typedef struct editor {
 	int cx, cy; /* chars x, y */
-	int rx; /* render x, y */
+	int rx; /* render x */
 	int rowoff;
 	int coloff;
 	int screenrows, screencols;

src/bar.c

@@ -14,15 +14,20 @@ void draw_status_bar(struct abuf *ab)
 
 	int mode_len;
 	if (vip.mode == NORMAL) {
-		abAppend(ab, BLUE_BG, 19);
+		abAppend(ab, BLUE_BG, COLOR_LEN);
 		char mode[9] = " NORMAL ";
 		abAppend(ab, mode, 8);
 		mode_len = 8;
-	} else {
+	} else if (vip.mode == INSERT) {
-		abAppend(ab, GREEN_BG, 19);
+		abAppend(ab, GREEN_BG, COLOR_LEN);
 		char mode[9] = " INSERT ";
 		abAppend(ab, mode, 8);
 		mode_len = 8;
+	} else if (vip.mode == COMMAND) {
+		abAppend(ab, PEACH_BG, COLOR_LEN);
+		char mode[10] = " COMMAND ";
+		abAppend(ab, mode, 9);
+		mode_len = 9;
 	}
 
 	abAppend(ab, "\x1b[22m", 5);
@@ -40,36 +45,42 @@ void draw_status_bar(struct abuf *ab)
 	}
 	int coord_len = snprintf(coord, sizeof(coord), " %d:%d ", vip.cy + 1, vip.rx + 1);
 
-	abAppend(ab, SURFACE_1_BG, 16); /* background */
+	abAppend(ab, SURFACE_1_BG, COLOR_LEN); /* background */
 	if (vip.mode == NORMAL) {
-		abAppend(ab, BLUE_FG, 19); /* text */
+		abAppend(ab, BLUE_FG, COLOR_LEN); /* text */
-	} else {
+	} else if (vip.mode == INSERT) {
-		abAppend(ab, GREEN_FG, 19);
+		abAppend(ab, GREEN_FG, COLOR_LEN);
+	} else if (vip.mode == COMMAND) {
+		abAppend(ab, PEACH_FG, COLOR_LEN);
 	}
 	abAppend(ab, git_branch, gitb_len);
 	abAppend(ab, "|", 1);
-	abAppend(ab, GREEN_FG, 19);
+	abAppend(ab, GREEN_FG, COLOR_LEN);
 	abAppend(ab, git_diff, gitd_len);
-	abAppend(ab, BLACK_BG, 13);
+	abAppend(ab, BLACK_BG, COLOR_LEN);
-	abAppend(ab, WHITE_FG, 19);
+	abAppend(ab, WHITE_FG, COLOR_LEN);
 	abAppend(ab, file, file_len);
 
 
 	while (file_len < vip.screencols) {
 		if (vip.screencols - mode_len - file_len - gitb_len - gitd_len - 1 == lines_len + coord_len) {
-			abAppend(ab, SURFACE_1_BG, 16);
+			abAppend(ab, SURFACE_1_BG, COLOR_LEN);
 			if (vip.mode == NORMAL) {
-				abAppend(ab, BLUE_FG, 19);
+				abAppend(ab, BLUE_FG, COLOR_LEN);
-			} else {
+			} else if (vip.mode == INSERT) {
-				abAppend(ab, GREEN_FG, 19);
+				abAppend(ab, GREEN_FG, COLOR_LEN);
+			} else if (vip.mode == COMMAND) {
+				abAppend(ab, PEACH_FG, COLOR_LEN);
 			}
 			abAppend(ab, lines, lines_len);
 			if (vip.mode == NORMAL) {
-				abAppend(ab, BLUE_BG, 19);
+				abAppend(ab, BLUE_BG, COLOR_LEN);
-			} else {
+			} else if (vip.mode == INSERT) {
-				abAppend(ab, GREEN_BG, 19);
+				abAppend(ab, GREEN_BG, COLOR_LEN);
+			} else if (vip.mode == COMMAND) {
+				abAppend(ab, PEACH_BG, COLOR_LEN);
 			}
-			abAppend(ab, BLACK_FG, 13);
+			abAppend(ab, BLACK_FG, COLOR_LEN);
 			abAppend(ab, "\x1b[1m", 4);
 			abAppend(ab, coord, coord_len);
 			abAppend(ab, "\x1b[22m", 5);

src/editor.c

@@ -156,6 +156,9 @@ void find_callback(char *query, int key)
 			vip.cy = current;
 			vip.cx = row_rx_to_cx(row, match - row->render);
 			vip.rowoff = vip.rows;
+
+			memset(&row->hl[match - row->render], HL_MATCH, strlen(query));
+			memset(&row->hl[match - row->render + strlen(query)], HL_RESET, row->render_size - (match - row->render + strlen(query)));
 			break;
 		}
 	}

src/row.c

@@ -3,6 +3,7 @@
 #include <string.h>
 
 #include "vip.h"
+#include "syntax.h"
 
 extern editor vip;
 
@@ -54,6 +55,7 @@ void update_row(row *row)
 	}
 	row->render[idx] = '\0';
 	row->render_size = idx;
+	update_highlight(row);
 }
 
 void insert_row(int at, char *s, size_t len)
@@ -70,6 +72,7 @@ void insert_row(int at, char *s, size_t len)
 
 	vip.row[at].render_size = 0;
 	vip.row[at].render = NULL;
+	vip.row[at].hl = NULL;
 	update_row(&vip.row[at]);
 
 	vip.rows++;
@@ -80,6 +83,7 @@ void free_row(row *row)
 {
 	free(row->render);
 	free(row->chars);
+	free(row->hl);
 }
 
 void del_row(int at)

src/syntax.c

@@ -0,0 +1,45 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+
+#include "vip.h"
+
+void update_highlight(row *row)
+{
+	row->hl = realloc(row->hl, row->render_size);
+	memset(row->hl, HL_NORMAL, row->render_size);
+	for (int i = 0; i < row->render_size; i++) {
+		if (isdigit(row->render[i])) {
+			row->hl[i] = HL_NUMBER;
+		}
+	}
+}
+
+char *syntax_to_color(int hl, size_t *len)
+{
+	switch (hl) {
+		case HL_NUMBER: 
+			*len = COLOR_LEN;
+			return strdup(PEACH_BG);
+
+		case HL_MATCH:;
+			char *str = malloc(COLOR_LEN * 2 + 1);
+			snprintf(str, COLOR_LEN * 2 + 1, "%s%s", BLACK_BG, SKY_FG);
+			str[COLOR_LEN * 2] = '\0';
+			*len = COLOR_LEN * 2;
+			return str;
+
+		case HL_RESET:;
+			char *res = malloc(COLOR_LEN * 2 + 1);
+			snprintf(res, COLOR_LEN * 2 + 1, "%s%s", WHITE_BG, BLACK_FG);
+			res[COLOR_LEN * 2] = '\0';
+			*len = COLOR_LEN * 2;
+			return res;
+
+		default: 
+			*len = COLOR_LEN;
+			return strdup(WHITE_BG);
+	}
+}
+

src/vip.c

@@ -14,6 +14,7 @@
 #include "bar.h"
 #include "editor.h"
 #include "row.h"
+#include "syntax.h"
 
 editor vip;
 
@@ -159,7 +160,33 @@ void draw_rows(struct abuf *ab)
 			int len = vip.row[filerow].render_size - vip.coloff;
 			if (len < 0) len = 0;
 			if (len > vip.screencols) len = vip.screencols;
-			abAppend(ab, &vip.row[filerow].render[vip.coloff], len);
+			char *c = &vip.row[filerow].render[vip.coloff];
+			unsigned char *hl = &vip.row[filerow].hl[vip.coloff];
+
+			char *current_color = malloc(COLOR_LEN * 2);
+			for (int j = 0; j < len; j++) {
+				if (hl[j] == HL_NORMAL) {
+					if (strncmp(current_color, WHITE_BG, COLOR_LEN)) {
+						abAppend(ab, WHITE_BG, COLOR_LEN);
+						memcpy(current_color, WHITE_BG, COLOR_LEN);
+					}
+					abAppend(ab, &c[j], 1);
+				} else {
+					size_t len;
+					char *color = syntax_to_color(hl[j], &len);
+					FILE *f = fopen("/home/night/a", "a");
+					fprintf(f, "len: %d\n", len);
+					if (strncmp(current_color, color, len)) {
+						fprintf(f, "color: %s\n", color);
+						memcpy(current_color, color, len);
+						abAppend(ab, color, len);
+					}
+					fclose(f);
+					free(color);
+					abAppend(ab, &c[j], 1);
+				}
+			}
+			abAppend(ab, WHITE_BG, COLOR_LEN);
 		}
 
 		abAppend(ab, "\x1b[K", 3);
@@ -292,8 +319,10 @@ void process_key()
 
 		case ':': /* PASSTHROUGH */
 			if (vip.mode == NORMAL) {
+				vip.mode = COMMAND;
 				char *cmd = prompt_editor(":%s", NULL);
 				if (cmd == NULL) {
+					vip.mode = NORMAL;
 					return;
 				}
 				switch (cmd[0]) {
@@ -306,6 +335,7 @@ void process_key()
 						} else {
 							if (vip.dirty) {
 								set_status_bar_message("No write since last change for buffer \"%s\"", vip.filename);
+								vip.mode = NORMAL;
 								return;
 							}
 							write(STDOUT_FILENO, "\x1b[2J", 4);
@@ -316,6 +346,7 @@ void process_key()
 						}
 					case 'w':
 						save_file();
+						vip.mode = NORMAL;
 				}
 			}
 		case '/': /* PASSTHROUGH */