Establish rootston headers & main

include/rootston/config.h

@@ -0,0 +1,51 @@
+#ifndef _ROOTSTON_CONFIG_H
+#define _ROOTSTON_CONFIG_H
+#include <wlr/types/wlr_output_layout.h>
+#include <wlr/types/wlr_input_device.h>
+#include <wlr/types/wlr_cursor.h>
+
+struct output_config {
+	char *name;
+	enum wl_output_transform transform;
+	int x, y;
+	struct wl_list link;
+};
+
+struct device_config {
+	char *name;
+	char *mapped_output;
+	struct wlr_box *mapped_box;
+	struct wl_list link;
+};
+
+struct roots_config {
+	// TODO: Multiple cursors, multiseat
+	struct {
+		char *mapped_output;
+		struct wlr_box *mapped_box;
+	} cursor;
+
+	struct wl_list outputs;
+	struct wl_list devices;
+	char *config_path;
+};
+
+struct roots_config *parse_args(int argc, char *argv[]);
+
+void roots_config_destroy(struct roots_config *config);
+
+/**
+ * Get configuration for the output. If the output is not configured, returns
+ * NULL.
+ */
+struct output_config *config_get_output(struct roots_config *config,
+		struct wlr_output *output);
+
+/**
+ * Get configuration for the device. If the device is not configured, returns
+ * NULL.
+ */
+struct device_config *config_get_device(struct roots_config *config,
+		struct wlr_input_device *device);
+
+#endif

include/rootston/desktop.h

@@ -0,0 +1,33 @@
+#ifndef _ROOTSTON_DESKTOP_H
+#define _ROOTSTON_DESKTOP_H
+#include <time.h>
+#include <wayland-server.h>
+#include <wlr/types/wlr_output.h>
+#include <wlr/types/wlr_output_layout.h>
+#include <wlr/types/wlr_compositor.h>
+#include <wlr/types/wlr_wl_shell.h>
+#include <wlr/types/wlr_xdg_shell_v6.h>
+#include <wlr/types/wlr_data_device_manager.h>
+#include <wlr/types/wlr_gamma_control.h>
+#include "rootston/view.h"
+
+struct roots_output {
+	struct roots_desktop *desktop;
+	struct wlr_output *output;
+	struct wl_listener frame;
+	struct wl_listener resolution;
+	struct timespec last_frame;
+	struct wl_list link;
+};
+
+struct roots_desktop {
+	struct wl_list outputs;
+	struct wlr_output_layout *layout;
+	struct wlr_compositor *wlr_compositor;
+	struct wlr_wl_shell *wl_shell;
+	struct wlr_xdg_shell_v6 *xdg_shell;
+	struct wlr_data_device_manager *data_device_manager;
+	struct wlr_gamma_control_manager *gamma_control_manager;
+};
+
+#endif

include/rootston/ini.h

@@ -0,0 +1,93 @@
+/* inih -- simple .INI file parser
+
+inih is released under the New BSD license (see LICENSE.txt). Go to the project
+home page for more info:
+
+https://github.com/benhoyt/inih
+
+*/
+
+#ifndef __INI_H__
+#define __INI_H__
+
+/* Make this header file easier to include in C++ code */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdio.h>
+
+/* Typedef for prototype of handler function. */
+typedef int (*ini_handler)(void* user, const char* section,
+                           const char* name, const char* value);
+
+/* Typedef for prototype of fgets-style reader function. */
+typedef char* (*ini_reader)(char* str, int num, void* stream);
+
+/* Parse given INI-style file. May have [section]s, name=value pairs
+   (whitespace stripped), and comments starting with ';' (semicolon). Section
+   is "" if name=value pair parsed before any section heading. name:value
+   pairs are also supported as a concession to Python's configparser.
+
+   For each name=value pair parsed, call handler function with given user
+   pointer as well as section, name, and value (data only valid for duration
+   of handler call). Handler should return nonzero on success, zero on error.
+
+   Returns 0 on success, line number of first error on parse error (doesn't
+   stop on first error), -1 on file open error, or -2 on memory allocation
+   error (only when INI_USE_STACK is zero).
+*/
+int ini_parse(const char* filename, ini_handler handler, void* user);
+
+/* Same as ini_parse(), but takes a FILE* instead of filename. This doesn't
+   close the file when it's finished -- the caller must do that. */
+int ini_parse_file(FILE* file, ini_handler handler, void* user);
+
+/* Same as ini_parse(), but takes an ini_reader function pointer instead of
+   filename. Used for implementing custom or string-based I/O. */
+int ini_parse_stream(ini_reader reader, void* stream, ini_handler handler,
+                     void* user);
+
+/* Nonzero to allow multi-line value parsing, in the style of Python's
+   configparser. If allowed, ini_parse() will call the handler with the same
+   name for each subsequent line parsed. */
+#ifndef INI_ALLOW_MULTILINE
+#define INI_ALLOW_MULTILINE 1
+#endif
+
+/* Nonzero to allow a UTF-8 BOM sequence (0xEF 0xBB 0xBF) at the start of
+   the file. See http://code.google.com/p/inih/issues/detail?id=21 */
+#ifndef INI_ALLOW_BOM
+#define INI_ALLOW_BOM 1
+#endif
+
+/* Nonzero to allow inline comments (with valid inline comment characters
+   specified by INI_INLINE_COMMENT_PREFIXES). Set to 0 to turn off and match
+   Python 3.2+ configparser behaviour. */
+#ifndef INI_ALLOW_INLINE_COMMENTS
+#define INI_ALLOW_INLINE_COMMENTS 1
+#endif
+#ifndef INI_INLINE_COMMENT_PREFIXES
+#define INI_INLINE_COMMENT_PREFIXES ";"
+#endif
+
+/* Nonzero to use stack, zero to use heap (malloc/free). */
+#ifndef INI_USE_STACK
+#define INI_USE_STACK 1
+#endif
+
+/* Stop parsing on first error (default is to keep parsing). */
+#ifndef INI_STOP_ON_FIRST_ERROR
+#define INI_STOP_ON_FIRST_ERROR 0
+#endif
+
+/* Maximum line length for any line in INI file. */
+#ifndef INI_MAX_LINE
+#define INI_MAX_LINE 2000
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __INI_H__ */

include/rootston/input.h

@@ -0,0 +1,91 @@
+#ifndef _ROOTSTON_INPUT_H
+#define _ROOTSTON_INPUT_H
+#include <xkbcommon/xkbcommon.h>
+#include <wayland-server.h>
+#include <wlr/types/wlr_input_device.h>
+#include <wlr/types/wlr_cursor.h>
+#include <wlr/types/wlr_seat.h>
+#include <wlr/xcursor.h>
+#include "rootston/view.h"
+
+struct roots_keyboard {
+	struct roots_input *input;
+	struct wlr_input_device *device;
+	struct wl_listener key;
+	struct wl_list link;
+	struct xkb_keymap *keymap;
+	struct xkb_state *xkb_state;
+	xkb_led_index_t leds[WLR_LED_LAST];
+	int keymap_fd;
+	size_t keymap_size;
+};
+
+struct roots_pointer {
+	struct roots_input *input;
+	struct wlr_input_device *device;
+	struct wl_listener motion;
+	struct wl_listener motion_absolute;
+	struct wl_listener button;
+	struct wl_listener axis;
+	struct wl_list link;
+};
+
+struct roots_touch {
+	struct roots_input *input;
+	struct wlr_input_device *device;
+	struct wl_listener down;
+	struct wl_listener up;
+	struct wl_listener motion;
+	struct wl_listener cancel;
+	struct wl_list link;
+};
+
+// TODO: tablet pad
+struct roots_tablet_tool {
+	struct roots_input *input;
+	struct wlr_input_device *device;
+	struct wl_listener axis;
+	struct wl_listener proximity;
+	struct wl_listener tip;
+	struct wl_listener button;
+	struct wl_list link;
+};
+
+enum roots_cursor_mode {
+	ROOTS_CURSOR_PASSTHROUGH,
+	ROOTS_CURSOR_MOVE,
+	ROOTS_CURSOR_RESIZE,
+	ROOTS_CURSOR_ROTATE,
+};
+
+struct roots_input_event {
+	uint32_t serial;
+	struct wlr_cursor *cursor;
+	struct wlr_input_device *device;
+};
+
+struct roots_input {
+	// TODO: multiseat, multicursor
+	struct wlr_cursor *cursor;
+	struct wlr_xcursor *xcursor;
+	struct wlr_seat *wl_seat;
+
+	enum roots_cursor_mode mode;
+	struct roots_view *focused_view;
+	struct roots_view *moving_view;
+	struct roots_view *resizing_view;
+	struct roots_view *rotating_view;
+	int offs_x, offs_y;
+
+	// Ring buffer of input events that could trigger move/resize/rotate
+	int input_events_idx;
+	struct roots_input_event input_events[16];
+
+	struct wl_list keyboards;
+	struct wl_list pointers;
+	struct wl_list touch;
+	struct wl_list tablet_tools;
+	struct wl_list tablet_pads;
+};
+
+#endif

include/rootston/server.h

@@ -0,0 +1,31 @@
+#ifndef _ROOTSTON_SERVER_H
+#define _ROOTSTON_SERVER_H
+#include <wayland-server.h>
+#include <wlr/backend.h>
+#include <wlr/backend/session.h>
+#include <wlr/render.h>
+#include <wlr/xwayland.h>
+#include "rootston/config.h"
+#include "rootston/desktop.h"
+#include "rootston/input.h"
+
+struct rootston {
+	/* Rootston resources */
+	struct roots_config *config;
+	struct roots_desktop *desktop;
+	struct roots_input *input;
+
+	/* Wayland resources */
+	struct wl_display *wl_display;
+	struct wl_event_loop *wl_event_loop;
+
+	/* WLR tools */
+	struct wlr_backend *backend;
+	struct wlr_session *session;
+	struct wlr_renderer *renderer;
+	struct wlr_xwayland *xwayland;
+};
+
+extern struct rootston root;
+
+#endif

include/rootston/view.h

@@ -0,0 +1,41 @@
+#ifndef _ROOTSTON_VIEW_H
+#define _ROOTSTON_VIEW_H
+
+struct roots_wl_shell_surface {
+	// TODO
+	void *_placeholder;
+};
+
+struct roots_xdg_surface_v6 {
+	// TODO: Maybe destroy listener should go in roots_view
+	struct wl_listener destroy_listener;
+	struct wl_listener ping_timeout_listener;
+	struct wl_listener request_minimize_listener;
+	struct wl_listener request_move_listener;
+	struct wl_listener request_resize_listener;
+	struct wl_listener request_show_window_menu_listener;
+};
+
+enum roots_view_type {
+	ROOTS_WL_SHELL_VIEW,
+	ROOTS_XDG_SHELL_V6_VIEW,
+	ROOTS_XWAYLAND_VIEW,
+};
+
+struct roots_view {
+	double x, y;
+	float rotation;
+	// TODO: Something for roots-enforced width/height
+	enum roots_view_type type;
+	union {
+		struct wlr_shell_surface *wl_shell_surface;
+		struct xdg_shell_v6_surface *xdg_shell_v6_surface;
+	};
+	union {
+		struct roots_wl_shell_surface *roots_wl_shell_surface;
+		struct xdg_shell_v6_surface *roots_xdg_surface_v6;
+	};
+	struct wl_list link;
+};
+
+#endif

meson.build

@@ -111,4 +111,5 @@ wlroots = declare_dependency(
 	include_directories: wlr_inc,
 )
 
+subdir('rootston')
 subdir('examples')

rootston/config.c

@@ -0,0 +1,269 @@
+#ifndef _POSIX_C_SOURCE
+#define _POSIX_C_SOURCE 200809L
+#endif
+#include <stdlib.h>
+#include <limits.h>
+#include <getopt.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/param.h>
+#include <wlr/util/log.h>
+#include <wlr/types/wlr_box.h>
+#include "rootston/config.h"
+#include "rootston/ini.h"
+
+static void usage(const char *name, int ret) {
+	fprintf(stderr,
+		"usage: %s [-C <FILE>]\n"
+		"\n"
+		" -C <FILE>      Path to the configuration file\n"
+		"                (default: rootston.ini).\n"
+		"                See `rootston.ini.example` for config\n"
+		"                file documentation.\n", name);
+
+	exit(ret);
+}
+
+static struct wlr_box *parse_geometry(const char *str) {
+	// format: {width}x{height}+{x}+{y}
+	if (strlen(str) > 255) {
+		wlr_log(L_ERROR, "cannot parse geometry string, too long");
+		return NULL;
+	}
+
+	char *buf = strdup(str);
+	struct wlr_box *box = calloc(1, sizeof(struct wlr_box));
+
+	bool has_width = false;
+	bool has_height = false;
+	bool has_x = false;
+	bool has_y = false;
+
+	char *pch = strtok(buf, "x+");
+	while (pch != NULL) {
+		errno = 0;
+		char *endptr;
+		long val = strtol(pch, &endptr, 0);
+
+		if ((errno == ERANGE && (val == LONG_MAX || val == LONG_MIN)) ||
+				(errno != 0 && val == 0)) {
+			goto invalid_input;
+		}
+
+		if (endptr == pch) {
+			goto invalid_input;
+		}
+
+		if (!has_width) {
+			box->width = val;
+			has_width = true;
+		} else if (!has_height) {
+			box->height = val;
+			has_height = true;
+		} else if (!has_x) {
+			box->x = val;
+			has_x = true;
+		} else if (!has_y) {
+			box->y = val;
+			has_y = true;
+		} else {
+			break;
+		}
+		pch = strtok(NULL, "x+");
+	}
+
+	if (!has_width || !has_height) {
+		goto invalid_input;
+	}
+
+	free(buf);
+	return box;
+
+invalid_input:
+	wlr_log(L_ERROR, "could not parse geometry string: %s", str);
+	free(buf);
+	free(box);
+	return NULL;
+}
+
+static const char *output_prefix = "output:";
+static const char *device_prefix = "device:";
+
+static int config_ini_handler(void *user, const char *section, const char *name,
+		const char *value) {
+	struct roots_config *config = user;
+	if (strncmp(output_prefix, section, strlen(output_prefix)) == 0) {
+		const char *output_name = section + strlen(output_prefix);
+		struct output_config *oc;
+		bool found = false;
+
+		wl_list_for_each(oc, &config->outputs, link) {
+			if (strcmp(oc->name, output_name) == 0) {
+				found = true;
+				break;
+			}
+		}
+
+		if (!found) {
+			oc = calloc(1, sizeof(struct output_config));
+			oc->name = strdup(output_name);
+			oc->transform = WL_OUTPUT_TRANSFORM_NORMAL;
+			wl_list_insert(&config->outputs, &oc->link);
+		}
+
+		if (strcmp(name, "x") == 0) {
+			oc->x = strtol(value, NULL, 10);
+		} else if (strcmp(name, "y") == 0) {
+			oc->y = strtol(value, NULL, 10);
+		} else if (strcmp(name, "rotate") == 0) {
+			if (strcmp(value, "90") == 0) {
+				oc->transform = WL_OUTPUT_TRANSFORM_90;
+			} else if (strcmp(value, "180") == 0) {
+				oc->transform = WL_OUTPUT_TRANSFORM_180;
+			} else if (strcmp(value, "270") == 0) {
+				oc->transform = WL_OUTPUT_TRANSFORM_270;
+			} else if (strcmp(value, "flipped") == 0) {
+				oc->transform = WL_OUTPUT_TRANSFORM_FLIPPED;
+			} else if (strcmp(value, "flipped-90") == 0) {
+				oc->transform = WL_OUTPUT_TRANSFORM_FLIPPED_90;
+			} else if (strcmp(value, "flipped-180") == 0) {
+				oc->transform = WL_OUTPUT_TRANSFORM_FLIPPED_180;
+			} else if (strcmp(value, "flipped-270") == 0) {
+				oc->transform = WL_OUTPUT_TRANSFORM_FLIPPED_270;
+			} else {
+				wlr_log(L_ERROR, "got unknown transform value: %s", value);
+			}
+		}
+	} else if (strcmp(section, "cursor") == 0) {
+		if (strcmp(name, "map-to-output") == 0) {
+			free(config->cursor.mapped_output);
+			config->cursor.mapped_output = strdup(value);
+		} else if (strcmp(name, "geometry") == 0) {
+			free(config->cursor.mapped_box);
+			config->cursor.mapped_box = parse_geometry(value);
+		} else {
+			wlr_log(L_ERROR, "got unknown cursor config: %s", name);
+		}
+	} else if (strncmp(device_prefix, section, strlen(device_prefix)) == 0) {
+		const char *device_name = section + strlen(device_prefix);
+		struct device_config *dc;
+		bool found = false;
+
+		wl_list_for_each(dc, &config->devices, link) {
+			if (strcmp(dc->name, device_name) == 0) {
+				found = true;
+				break;
+			}
+		}
+
+		if (!found) {
+			dc = calloc(1, sizeof(struct device_config));
+			dc->name = strdup(device_name);
+			wl_list_insert(&config->devices, &dc->link);
+		}
+
+		if (strcmp(name, "map-to-output") == 0) {
+			free(dc->mapped_output);
+			dc->mapped_output = strdup(value);
+		} else if (strcmp(name, "geometry") == 0) {
+			free(dc->mapped_box);
+			dc->mapped_box = parse_geometry(value);
+		} else {
+			wlr_log(L_ERROR, "got unknown device config: %s", name);
+		}
+	} else {
+		wlr_log(L_ERROR, "got unknown config section: %s", section);
+	}
+
+	return 1;
+}
+
+struct roots_config *parse_args(int argc, char *argv[]) {
+	struct roots_config *config = calloc(1, sizeof(struct roots_config));
+	wl_list_init(&config->outputs);
+	wl_list_init(&config->devices);
+
+	int c;
+	while ((c = getopt(argc, argv, "C:h")) != -1) {
+		switch (c) {
+		case 'C':
+			config->config_path = strdup(optarg);
+			break;
+		case 'h':
+		case '?':
+			usage(argv[0], c != 'h');
+		}
+	}
+
+	if (!config->config_path) {
+		// get the config path from the current directory
+		char cwd[MAXPATHLEN];
+		if (getcwd(cwd, sizeof(cwd)) != NULL) {
+			char buf[MAXPATHLEN];
+			snprintf(buf, MAXPATHLEN, "%s/%s", cwd, "rootston.ini");
+			config->config_path = strdup(buf);
+		} else {
+			wlr_log(L_ERROR, "could not get cwd");
+			exit(1);
+		}
+	}
+
+	int result = ini_parse(config->config_path, config_ini_handler, config);
+
+	if (result == -1) {
+		wlr_log(L_DEBUG, "No config file found. Using empty config.");
+	} else if (result == -2) {
+		wlr_log(L_ERROR, "Could not allocate memory to parse config file");
+		exit(1);
+	} else if (result != 0) {
+		wlr_log(L_ERROR, "Could not parse config file");
+		exit(1);
+	}
+
+	return config;
+}
+
+void roots_config_destroy(struct roots_config *config) {
+	struct output_config *oc, *otmp = NULL;
+	wl_list_for_each_safe(oc, otmp, &config->outputs, link) {
+		free(oc->name);
+		free(oc);
+	}
+
+	struct device_config *dc, *dtmp = NULL;
+	wl_list_for_each_safe(dc, dtmp, &config->devices, link) {
+		free(dc->name);
+		free(dc->mapped_output);
+		free(dc->mapped_box);
+		free(dc);
+	}
+
+	free(config->config_path);
+	free(config->cursor.mapped_output);
+	free(config->cursor.mapped_box);
+	free(config);
+}
+
+struct output_config *config_get_output(struct roots_config *config,
+		struct wlr_output *output) {
+	struct output_config *o_config;
+	wl_list_for_each(o_config, &config->outputs, link) {
+		if (strcmp(o_config->name, output->name) == 0) {
+			return o_config;
+		}
+	}
+
+	return NULL;
+}
+
+struct device_config *config_get_device(struct roots_config *config,
+		struct wlr_input_device *device) {
+	struct device_config *d_config;
+	wl_list_for_each(d_config, &config->devices, link) {
+		if (strcmp(d_config->name, device->name) == 0) {
+			return d_config;
+		}
+	}
+
+	return NULL;
+}

rootston/ini.c

@@ -0,0 +1,195 @@
+/* inih -- simple .INI file parser
+
+inih is released under the New BSD license (see LICENSE.txt). Go to the project
+home page for more info:
+
+https://github.com/benhoyt/inih
+
+*/
+
+#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS)
+#define _CRT_SECURE_NO_WARNINGS
+#endif
+
+#include <stdio.h>
+#include <ctype.h>
+#include <string.h>
+
+#include "rootston/ini.h"
+
+#if !INI_USE_STACK
+#include <stdlib.h>
+#endif
+
+#define MAX_SECTION 50
+#define MAX_NAME 50
+
+/* Strip whitespace chars off end of given string, in place. Return s. */
+static char* rstrip(char* s)
+{
+    char* p = s + strlen(s);
+    while (p > s && isspace((unsigned char)(*--p)))
+        *p = '\0';
+    return s;
+}
+
+/* Return pointer to first non-whitespace char in given string. */
+static char* lskip(const char* s)
+{
+    while (*s && isspace((unsigned char)(*s)))
+        s++;
+    return (char*)s;
+}
+
+/* Return pointer to first char (of chars) or inline comment in given string,
+   or pointer to null at end of string if neither found. Inline comment must
+   be prefixed by a whitespace character to register as a comment. */
+static char* find_chars_or_comment(const char* s, const char* chars)
+{
+#if INI_ALLOW_INLINE_COMMENTS
+    int was_space = 0;
+    while (*s && (!chars || !strchr(chars, *s)) &&
+           !(was_space && strchr(INI_INLINE_COMMENT_PREFIXES, *s))) {
+        was_space = isspace((unsigned char)(*s));
+        s++;
+    }
+#else
+    while (*s && (!chars || !strchr(chars, *s))) {
+        s++;
+    }
+#endif
+    return (char*)s;
+}
+
+/* Version of strncpy that ensures dest (size bytes) is null-terminated. */
+static char* strncpy0(char* dest, const char* src, size_t size)
+{
+    strncpy(dest, src, size);
+    dest[size - 1] = '\0';
+    return dest;
+}
+
+/* See documentation in header file. */
+int ini_parse_stream(ini_reader reader, void* stream, ini_handler handler,
+                     void* user)
+{
+    /* Uses a fair bit of stack (use heap instead if you need to) */
+#if INI_USE_STACK
+    char line[INI_MAX_LINE];
+#else
+    char* line;
+#endif
+    char section[MAX_SECTION] = "";
+    char prev_name[MAX_NAME] = "";
+
+    char* start;
+    char* end;
+    char* name;
+    char* value;
+    int lineno = 0;
+    int error = 0;
+
+#if !INI_USE_STACK
+    line = (char*)malloc(INI_MAX_LINE);
+    if (!line) {
+        return -2;
+    }
+#endif
+
+    /* Scan through stream line by line */
+    while (reader(line, INI_MAX_LINE, stream) != NULL) {
+        lineno++;
+
+        start = line;
+#if INI_ALLOW_BOM
+        if (lineno == 1 && (unsigned char)start[0] == 0xEF &&
+                           (unsigned char)start[1] == 0xBB &&
+                           (unsigned char)start[2] == 0xBF) {
+            start += 3;
+        }
+#endif
+        start = lskip(rstrip(start));
+
+        if (*start == ';' || *start == '#') {
+            /* Per Python configparser, allow both ; and # comments at the
+               start of a line */
+        }
+#if INI_ALLOW_MULTILINE
+        else if (*prev_name && *start && start > line) {
+            /* Non-blank line with leading whitespace, treat as continuation
+               of previous name's value (as per Python configparser). */
+            if (!handler(user, section, prev_name, start) && !error)
+                error = lineno;
+        }
+#endif
+        else if (*start == '[') {
+            /* A "[section]" line */
+            end = find_chars_or_comment(start + 1, "]");
+            if (*end == ']') {
+                *end = '\0';
+                strncpy0(section, start + 1, sizeof(section));
+                *prev_name = '\0';
+            }
+            else if (!error) {
+                /* No ']' found on section line */
+                error = lineno;
+            }
+        }
+        else if (*start) {
+            /* Not a comment, must be a name[=:]value pair */
+            end = find_chars_or_comment(start, "=:");
+            if (*end == '=' || *end == ':') {
+                *end = '\0';
+                name = rstrip(start);
+                value = lskip(end + 1);
+#if INI_ALLOW_INLINE_COMMENTS
+                end = find_chars_or_comment(value, NULL);
+                if (*end)
+                    *end = '\0';
+#endif
+                rstrip(value);
+
+                /* Valid name[=:]value pair found, call handler */
+                strncpy0(prev_name, name, sizeof(prev_name));
+                if (!handler(user, section, name, value) && !error)
+                    error = lineno;
+				memset(value, 0, strlen(value));
+            }
+            else if (!error) {
+                /* No '=' or ':' found on name[=:]value line */
+                error = lineno;
+            }
+        }
+
+#if INI_STOP_ON_FIRST_ERROR
+        if (error)
+            break;
+#endif
+    }
+
+#if !INI_USE_STACK
+    free(line);
+#endif
+
+    return error;
+}
+
+/* See documentation in header file. */
+int ini_parse_file(FILE* file, ini_handler handler, void* user)
+{
+    return ini_parse_stream((ini_reader)fgets, file, handler, user);
+}
+
+/* See documentation in header file. */
+int ini_parse(const char* filename, ini_handler handler, void* user)
+{
+    FILE* file;
+    int error;
+
+    file = fopen(filename, "r");
+    if (!file)
+        return -1;
+    error = ini_parse_file(file, handler, user);
+    fclose(file);
+    return error;
+}

rootston/main.c

@@ -0,0 +1,14 @@
+#include <wayland-server.h>
+#include <wlr/util/log.h>
+#include "rootston/config.h"
+#include "rootston/server.h"
+
+struct rootston root = { 0 };
+
+int main(int argc, char **argv) {
+	root.config = parse_args(argc, argv);
+	root.wl_display = wl_display_create();
+	root.wl_event_loop = wl_display_get_event_loop(root.wl_display);
+	wl_display_init_shm(root.wl_display);
+	return 0;
+}

rootston/meson.build

@@ -0,0 +1,7 @@
+executable(
+	'rooston', [
+		'main.c',
+		'config.c',
+		'ini.c',
+	], dependencies: wlroots
+)