Start port of swaybar to layer shell

This starts up the event loop and wayland display and shims out the
basic top level rendering concepts. Also includes some changes to
incorporate pango into the 1.x codebase properly.

1 files changed, 0 insertions, 530 deletions

diff --git a/swaybar/status_line.c b/swaybar/status_line.c
deleted file mode 100644
index 87e90caf..00000000
--- a/swaybar/status_line.c
+++ /dev/null
@@ -1,530 +0,0 @@
-#define _XOPEN_SOURCE 700
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <json-c/json.h>
-
-#include "swaybar/config.h"
-#include "swaybar/status_line.h"
-#include "log.h"
-#include "util.h"
-
-#define I3JSON_MAXDEPTH 4
-#define I3JSON_UNKNOWN 0
-#define I3JSON_ARRAY 1
-#define I3JSON_STRING 2
-
-struct {
-	int bufsize;
-	char *buffer;
-	char *line_start;
-	char *parserpos;
-	bool escape;
-	int depth;
-	int bar[I3JSON_MAXDEPTH+1];
-} i3json_state = { 0, NULL, NULL, NULL, false, 0, { I3JSON_UNKNOWN } };
-
-static char line[1024];
-static char line_rest[1024];
-
-static char event_buff[1024];
-
-static void free_status_block(void *item) {
-	if (!item) {
-		return;
-	}
-	struct status_block *sb = (struct status_block*)item;
-	if (sb->full_text) {
-		free(sb->full_text);
-	}
-	if (sb->short_text) {
-		free(sb->short_text);
-	}
-	if (sb->align) {
-		free(sb->align);
-	}
-	if (sb->name) {
-		free(sb->name);
-	}
-	if (sb->instance) {
-		free(sb->instance);
-	}
-	free(sb);
-}
-
-static void parse_json(struct bar *bar, const char *text) {
-	json_object *results = json_tokener_parse(text);
-	if (!results) {
-		sway_log(L_DEBUG, "Failed to parse json");
-		return;
-	}
-
-	if (json_object_array_length(results) < 1) {
-		return;
-	}
-
-	if (bar->status->block_line) {
-		list_foreach(bar->status->block_line, free_status_block);
-		list_free(bar->status->block_line);
-	}
-
-	bar->status->block_line = create_list();
-
-	int i;
-	for (i = 0; i < json_object_array_length(results); ++i) {
-		json_object *full_text, *short_text, *color, *min_width, *align, *urgent;
-		json_object *name, *instance, *separator, *separator_block_width;
-		json_object *background, *border, *border_top, *border_bottom;
-		json_object *border_left, *border_right, *markup;
-
-		json_object *json = json_object_array_get_idx(results, i);
-		if (!json) {
-			continue;
-		}
-
-		json_object_object_get_ex(json, "full_text", &full_text);
-		json_object_object_get_ex(json, "short_text", &short_text);
-		json_object_object_get_ex(json, "color", &color);
-		json_object_object_get_ex(json, "min_width", &min_width);
-		json_object_object_get_ex(json, "align", &align);
-		json_object_object_get_ex(json, "urgent", &urgent);
-		json_object_object_get_ex(json, "name", &name);
-		json_object_object_get_ex(json, "instance", &instance);
-		json_object_object_get_ex(json, "markup", &markup);
-		json_object_object_get_ex(json, "separator", &separator);
-		json_object_object_get_ex(json, "separator_block_width", &separator_block_width);
-		json_object_object_get_ex(json, "background", &background);
-		json_object_object_get_ex(json, "border", &border);
-		json_object_object_get_ex(json, "border_top", &border_top);
-		json_object_object_get_ex(json, "border_bottom", &border_bottom);
-		json_object_object_get_ex(json, "border_left", &border_left);
-		json_object_object_get_ex(json, "border_right", &border_right);
-
-		struct status_block *new = calloc(1, sizeof(struct status_block));
-
-		if (full_text) {
-			new->full_text = strdup(json_object_get_string(full_text));
-		}
-
-		if (short_text) {
-			new->short_text = strdup(json_object_get_string(short_text));
-		}
-
-		if (color) {
-			new->color = parse_color(json_object_get_string(color));
-		} else {
-			new->color = bar->config->colors.statusline;
-		}
-
-		if (min_width) {
-			json_type type = json_object_get_type(min_width);
-			if (type == json_type_int) {
-				new->min_width = json_object_get_int(min_width);
-			} else if (type == json_type_string) {
-				/* the width will be calculated when rendering */
-				new->min_width = 0;
-			}
-		}
-
-		if (align) {
-			new->align = strdup(json_object_get_string(align));
-		} else {
-			new->align = strdup("left");
-		}
-
-		if (urgent) {
-			new->urgent = json_object_get_int(urgent);
-		}
-
-		if (name) {
-			new->name = strdup(json_object_get_string(name));
-		}
-
-		if (instance) {
-			new->instance = strdup(json_object_get_string(instance));
-		}
-
-		if (markup) {
-			new->markup = false;
-			const char *markup_str = json_object_get_string(markup);
-			if (strcmp(markup_str, "pango") == 0) {
-				new->markup = true;
-			}
-		}
-
-		if (separator) {
-			new->separator = json_object_get_int(separator);
-		} else {
-			new->separator = true; // i3bar spec
-		}
-
-		if (separator_block_width) {
-			new->separator_block_width = json_object_get_int(separator_block_width);
-		} else {
-			new->separator_block_width = 9; // i3bar spec
-		}
-
-		// Airblader features
-		if (background) {
-			new->background = parse_color(json_object_get_string(background));
-		} else {
-			new->background = 0x0; // transparent
-		}
-
-		if (border) {
-			new->border = parse_color(json_object_get_string(border));
-		} else {
-			new->border = 0x0; // transparent
-		}
-
-		if (border_top) {
-			new->border_top = json_object_get_int(border_top);
-		} else {
-			new->border_top = 1;
-		}
-
-		if (border_bottom) {
-			new->border_bottom = json_object_get_int(border_bottom);
-		} else {
-			new->border_bottom = 1;
-		}
-
-		if (border_left) {
-			new->border_left = json_object_get_int(border_left);
-		} else {
-			new->border_left = 1;
-		}
-
-		if (border_right) {
-			new->border_right = json_object_get_int(border_right);
-		} else {
-			new->border_right = 1;
-		}
-
-		list_add(bar->status->block_line, new);
-	}
-
-	json_object_put(results);
-}
-
-// continue parsing from last parserpos
-static int i3json_parse(struct bar *bar) {
-	char *c = i3json_state.parserpos;
-	int handled = 0;
-	while (*c) {
-		if (i3json_state.bar[i3json_state.depth] == I3JSON_STRING) {
-			if (!i3json_state.escape && *c == '"') {
-				--i3json_state.depth;
-			}
-			i3json_state.escape = !i3json_state.escape && *c == '\\';
-		} else {
-			switch (*c) {
-			case '[':
-				++i3json_state.depth;
-				if (i3json_state.depth > I3JSON_MAXDEPTH) {
-					sway_abort("JSON too deep");
-				}
-				i3json_state.bar[i3json_state.depth] = I3JSON_ARRAY;
-				if (i3json_state.depth == 2) {
-					i3json_state.line_start = c;
-				}
-				break;
-			case ']':
-				if (i3json_state.bar[i3json_state.depth] != I3JSON_ARRAY) {
-					sway_abort("JSON malformed");
-				}
-				--i3json_state.depth;
-				if (i3json_state.depth == 1) {
-					// c[1] is valid since c[0] != '\0'
-					char p = c[1];
-					c[1] = '\0';
-					parse_json(bar, i3json_state.line_start);
-					c[1] = p;
-					++handled;
-					i3json_state.line_start = c+1;
-				}
-				break;
-			case '"':
-				++i3json_state.depth;
-				if (i3json_state.depth > I3JSON_MAXDEPTH) {
-					sway_abort("JSON too deep");
-				}
-				i3json_state.bar[i3json_state.depth] = I3JSON_STRING;
-				break;
-			}
-		}
-		++c;
-	}
-	i3json_state.parserpos = c;
-	return handled;
-}
-
-// Read line from file descriptor, only show the line tail if it is too long.
-// In non-blocking mode treat "no more data" as a linebreak.
-// If data after a line break has been read, return it in rest.
-// If rest is non-empty, then use that as the start of the next line.
-static int read_line_tail(int fd, char *buf, int nbyte, char *rest) {
-	if (fd < 0 || !buf || !nbyte) {
-		return -1;
-	}
-	int l;
-	char *buffer = malloc(nbyte*2+1);
-	char *readpos = buffer;
-	char *lf;
-	// prepend old data to new line if necessary
-	if (rest) {
-		l = strlen(rest);
-		if (l > nbyte) {
-			strcpy(buffer, rest + l - nbyte);
-			readpos += nbyte;
-		} else if (l) {
-			strcpy(buffer, rest);
-			readpos += l;
-		}
-	}
-	// read until a linefeed is found or no more data is available
-	while ((l = read(fd, readpos, nbyte)) > 0) {
-		readpos[l] = '\0';
-		lf = strchr(readpos, '\n');
-		if (lf) {
-			// linefeed found, replace with \0
-			*lf = '\0';
-			// give data from the end of the line, try to fill the buffer
-			if (lf-buffer > nbyte) {
-				strcpy(buf, lf - nbyte + 1);
-			} else {
-				strcpy(buf, buffer);
-			}
-			// we may have read data from the next line, save it to rest
-			if (rest) {
-				rest[0] = '\0';
-				strcpy(rest, lf + 1);
-			}
-			free(buffer);
-			return strlen(buf);
-		} else {
-			// no linefeed found, slide data back.
-			int overflow = readpos - buffer + l - nbyte;
-			if (overflow > 0) {
-				memmove(buffer, buffer + overflow , nbyte + 1);
-			}
-		}
-	}
-	if (l < 0) {
-		free(buffer);
-		return l;
-	}
-	readpos[l]='\0';
-	if (rest) {
-		rest[0] = '\0';
-	}
-	if (nbyte < readpos - buffer + l - 1) {
-		memcpy(buf, readpos - nbyte + l + 1, nbyte);
-	} else {
-		strncpy(buf, buffer, nbyte);
-	}
-	buf[nbyte-1] = '\0';
-	free(buffer);
-	return strlen(buf);
-}
-
-// make sure that enough buffer space is available starting from parserpos
-static void i3json_ensure_free(int min_free) {
-	int _step = 10240;
-	int r = min_free % _step;
-	if (r) {
-		min_free += _step - r;
-	}
-	if (!i3json_state.buffer) {
-		i3json_state.buffer = malloc(min_free);
-		i3json_state.bufsize = min_free;
-		i3json_state.parserpos = i3json_state.buffer;
-	} else {
-		int len = 0;
-		int pos = 0;
-		if (i3json_state.line_start) {
-			len = strlen(i3json_state.line_start);
-			pos = i3json_state.parserpos - i3json_state.line_start;
-			if (i3json_state.line_start != i3json_state.buffer) {
-				memmove(i3json_state.buffer, i3json_state.line_start, len+1);
-			}
-		} else {
-			len = strlen(i3json_state.buffer);
-		}
-		if (i3json_state.bufsize < len+min_free) {
-			i3json_state.bufsize += min_free;
-			if (i3json_state.bufsize > 1024000) {
-				sway_abort("Status line json too long or malformed.");
-			}
-			i3json_state.buffer = realloc(i3json_state.buffer, i3json_state.bufsize);
-			if (!i3json_state.buffer) {
-				sway_abort("Could not allocate json buffer");
-			}
-		}
-		if (i3json_state.line_start) {
-			i3json_state.line_start = i3json_state.buffer;
-			i3json_state.parserpos = i3json_state.buffer + pos;
-		} else {
-			i3json_state.parserpos = i3json_state.buffer;
-		}
-	}
-	if (!i3json_state.buffer) {
-		sway_abort("Could not allocate buffer.");
-	}
-}
-
-// append data and parse it.
-static int i3json_handle_data(struct bar *bar, char *data) {
-	int len = strlen(data);
-	i3json_ensure_free(len);
-	strcpy(i3json_state.parserpos, data);
-	return i3json_parse(bar);
-}
-
-// read data from fd and parse it.
-static int i3json_handle_fd(struct bar *bar) {
-	i3json_ensure_free(10240);
-	// get fresh data at the end of the buffer
-	int readlen = read(bar->status_read_fd, i3json_state.parserpos, 10239);
-	if (readlen < 0) {
-		return readlen;
-	}
-	i3json_state.parserpos[readlen] = '\0';
-	return i3json_parse(bar);
-}
-
-bool status_line_mouse_event(struct bar *bar, int x, int y, uint32_t button) {
-	sway_log(L_DEBUG, "status_line_mouse_event.");
-	if (!bar->status->click_events) {
-		sway_log(L_DEBUG, "click_events are not enabled.");
-		return false;
-	}
-
-	if (bar->status->protocol == I3BAR) {
-		sway_log(L_DEBUG, "Sending click event.");
-
-		// find clicked block
-		struct status_block *clicked_block = NULL;
-		struct status_block *current_block = NULL;
-		int num_blocks = bar->status->block_line->length;
-
-		if (num_blocks == 0) {
-			return false;
-		} else {
-			current_block = bar->status->block_line->items[0];
-			if (x < current_block->x) {
-				return false;
-			}
-		}
-
-		for (int i = 0; i < num_blocks; i++) {
-			current_block = bar->status->block_line->items[i];
-			if (x < (current_block->x + current_block->width)) {
-				clicked_block = current_block;
-				break;
-			}
-		}
-
-		if (!clicked_block || !clicked_block->name) {
-			return false;
-		}
-
-		// event example {"name":"capture","instance":"label","button":1,"x":3431,"y":18}
-	
-		struct json_object *event_json = json_object_new_object();
-		json_object_object_add(event_json, "name", json_object_new_string(clicked_block->name));
-		if (clicked_block->instance) {
-			json_object_object_add(event_json, "instance", json_object_new_string(clicked_block->instance));
-		}
-		json_object_object_add(event_json, "button", json_object_new_int(button));
-		json_object_object_add(event_json, "x", json_object_new_int(x));
-		json_object_object_add(event_json, "y", json_object_new_int(y));
-
-		int len = snprintf(event_buff, sizeof(event_buff), "%s\n", json_object_to_json_string(event_json));
-
-		json_object_put(event_json);
-
-		if (len <= (int)sizeof(event_buff)) { // if not truncated
-			write(bar->status_write_fd, event_buff, len);
-			return true;
-		}
-	}
-
-	return false;
-}
-
-bool handle_status_line(struct bar *bar) {
-	bool dirty = false;
-
-	switch (bar->status->protocol) {
-	case I3BAR:
-		sway_log(L_DEBUG, "Got i3bar protocol.");
-		if (i3json_handle_fd(bar) > 0) {
-			dirty = true;
-		}
-		break;
-	case TEXT:
-		sway_log(L_DEBUG, "Got text protocol.");
-		read_line_tail(bar->status_read_fd, line, sizeof(line), line_rest);
-		dirty = true;
-		bar->status->text_line = line;
-		break;
-	case UNDEF:
-		sway_log(L_DEBUG, "Detecting protocol...");
-		if (read_line_tail(bar->status_read_fd, line, sizeof(line), line_rest) < 0) {
-			break;
-		}
-		dirty = true;
-		bar->status->text_line = line;
-		bar->status->protocol = TEXT;
-		if (line[0] == '{') {
-			// detect i3bar json protocol
-			json_object *proto = json_tokener_parse(line);
-			if (proto) {
-
-				json_object *version;
-				if (json_object_object_get_ex(proto, "version", &version)
-							&& json_object_get_int(version) == 1
-				) {
-					sway_log(L_DEBUG, "Switched to i3bar protocol.");
-					bar->status->protocol = I3BAR;
-				}
-
-				json_object *click_events;
-				if (json_object_object_get_ex(proto, "click_events", &click_events)
-						&& json_object_get_boolean(click_events)) {
-
-					sway_log(L_DEBUG, "Enabling click events.");
-					bar->status->click_events = true;
-
-					const char *events_array = "[\n";
-					write(bar->status_write_fd, events_array, strlen(events_array));
-				}
-
-				i3json_handle_data(bar, line_rest);
-
-				json_object_put(proto);
-			}
-		}
-		break;
-	}
-
-	return dirty;
-}
-
-struct status_line *init_status_line() {
-	struct status_line *line = malloc(sizeof(struct status_line));
-	line->block_line = create_list();
-	line->text_line = NULL;
-	line->protocol = UNDEF;
-	line->click_events = false;
-
-	return line;
-}
-
-void free_status_line(struct status_line *line) {
-	if (line->block_line) {
-		list_foreach(line->block_line, free_status_block);
-		list_free(line->block_line);
-	}
-}