Pull in some scas code and read i3 config file

9 files changed, 350 insertions, 2 deletions

diff --git a/sway/config.c b/sway/config.c
new file mode 100644
index 00000000..3ad1bcf9
--- /dev/null
+++ b/sway/config.c
@@ -0,0 +1,27 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "readline.h"
+#include "stringop.h"
+#include "list.h"
+#include "config.h"
+
+struct sway_config *read_config(FILE *file) {
+	struct sway_config *config = malloc(sizeof(struct sway_config));
+	config->symbols = create_list();
+	config->modes = create_list();
+
+	while (!feof(file)) {
+		int _;
+		char *line = read_line(file);
+		line = strip_whitespace(line, &_);
+		line = strip_comments(line);
+		if (!line[0]) {
+			goto _continue;
+		}
+		printf("Parsing config line %s\n", line);
+_continue:
+		free(line);
+	}
+
+	return config;
+}
diff --git a/sway/config.h b/sway/config.h
new file mode 100644
index 00000000..2fe566f0
--- /dev/null
+++ b/sway/config.h
@@ -0,0 +1,26 @@
+#ifndef _SWAY_CONFIG_H
+#define _SWAY_CONFIG_H
+
+#include <stdint.h>
+#include <wlc/wlc.h>
+#include "list.h"
+
+struct sway_binding {
+    list_t *keys;
+    struct wlc_modifiers modifiers;
+    char *command;
+};
+
+struct sway_mode {
+    char *name;
+    list_t *bindings;
+};
+
+struct sway_config {
+    list_t *symbols;
+    list_t *modes;
+};
+
+struct sway_config *read_config(FILE *file);
+
+#endif
diff --git a/sway/list.c b/sway/list.c
new file mode 100644
index 00000000..120cfbcd
--- /dev/null
+++ b/sway/list.c
@@ -0,0 +1,37 @@
+#include "list.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+list_t *create_list() {
+	list_t *list = malloc(sizeof(list_t));
+	list->capacity = 10;
+	list->length = 0;
+	list->items = malloc(sizeof(void*) * list->capacity);
+	return list;
+}
+
+void list_free(list_t *list) {
+	free(list->items);
+	free(list);
+}
+
+void list_add(list_t *list, void *item) {
+	if (list->length == list->capacity) {
+		list->capacity += 10;
+		list->items = realloc(list->items, sizeof(void*) * list->capacity);
+	}
+	list->items[list->length++] = item;
+}
+
+void list_del(list_t *list, int index) {
+	list->length--;
+	memmove(&list->items[index], &list->items[index + 1], sizeof(void*) * (list->capacity - index - 1));
+}
+
+void list_cat(list_t *list, list_t *source) {
+	int i;
+	for (i = 0; i < source->length; ++i) {
+		list_add(list, source->items[i]);
+	}
+}
diff --git a/sway/list.h b/sway/list.h
new file mode 100644
index 00000000..2f60b0df
--- /dev/null
+++ b/sway/list.h
@@ -0,0 +1,16 @@
+#ifndef _SWAY_LIST_H
+#define _SWAY_LIST_H
+
+typedef struct {
+    int capacity;
+    int length;
+    void **items;
+} list_t;
+
+list_t *create_list();
+void list_free(list_t *list);
+void list_add(list_t *list, void *item);
+void list_del(list_t *list, int index);
+void list_cat(list_t *list, list_t *source);
+
+#endif
diff --git a/sway/main.c b/sway/main.c
index e6a5b851..ab687b17 100644
--- a/sway/main.c
+++ b/sway/main.c
@@ -1,6 +1,41 @@
 #include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <wlc/wlc.h>
+#include "config.h"
 
-int main() {
-	printf("Hello world\n");
+struct sway_config *config;
+
+bool load_config() {
+	// TODO: Allow use of more config file locations
+	const char *name = "/.i3/config";
+	const char *home = getenv("HOME");
+	char *temp = malloc(strlen(home) + strlen(name) + 1);
+	strcpy(temp, home);
+	strcat(temp, name);
+	FILE *f = fopen(temp, "r");
+	if (!f) {
+		fprintf(stderr, "Unable to open %s for reading", temp);
+		free(temp);
+		exit(1);
+	}
+	free(temp);
+	config = read_config(f);
+	fclose(f);
+	return true;
+}
+
+int main(int argc, char **argv) {
+	if (!load_config()) {
+		return 0;
+	}
+	return 0;
+	// TODO:
+
+	static struct wlc_interface interface = { };
+	if (!wlc_init(&interface, argc, argv)) {
+		return 1;
+	}
+	wlc_run();
 	return 0;
 }
diff --git a/sway/readline.c b/sway/readline.c
new file mode 100644
index 00000000..be8c35cc
--- /dev/null
+++ b/sway/readline.c
@@ -0,0 +1,36 @@
+#include "readline.h"
+#include <stdlib.h>
+#include <stdio.h>
+
+char *read_line(FILE *file) {
+	int i = 0, length = 0, size = 128;
+	char *string = malloc(size);
+	if (!string) {
+		return NULL;
+	}
+	while (1) {
+		int c = getc(file);
+		if (c == EOF || c == '\n' || c == '\0') {
+			break;
+		}
+		if (c == '\r') {
+			continue;
+		}
+		if (i == size) {
+			string = realloc(string, length *= 2);
+			if (!string) {
+				return NULL;
+			}
+		}
+		string[i++] = (char)c;
+		length++;
+	}
+	if (i + 1 != size) {
+		string = realloc(string, length + 1);
+		if (!string) {
+			return NULL;
+		}
+	}
+	string[i] = '\0';
+	return string;
+}
diff --git a/sway/readline.h b/sway/readline.h
new file mode 100644
index 00000000..dbe937c1
--- /dev/null
+++ b/sway/readline.h
@@ -0,0 +1,8 @@
+#ifndef _SWAY_READLINE_H
+#define _SWAY_READLINE_H
+
+#include <stdio.h>
+
+char *read_line(FILE *file);
+
+#endif
diff --git a/sway/stringop.c b/sway/stringop.c
new file mode 100644
index 00000000..0e7ad6a9
--- /dev/null
+++ b/sway/stringop.c
@@ -0,0 +1,150 @@
+#include "stringop.h"
+#include <stdlib.h>
+#include <stdio.h>
+#include "string.h"
+#include "list.h"
+#include <strings.h>
+
+/* Note: This returns 8 characters for trimmed_start per tab character. */
+char *strip_whitespace(char *_str, int *trimmed_start) {
+	*trimmed_start = 0;
+	if (*_str == '\0')
+		return _str;
+	char *strold = _str;
+	while (*_str == ' ' || *_str == '\t') {
+		if (*_str == '\t') {
+			*trimmed_start += 8;
+		} else {
+			*trimmed_start += 1;
+		}
+		_str++;
+	}
+	char *str = malloc(strlen(_str) + 1);
+	strcpy(str, _str);
+	free(strold);
+	int i;
+	for (i = 0; str[i] != '\0'; ++i);
+	do {
+		i--;
+	} while (i >= 0 && (str[i] == ' ' || str[i] == '\t'));
+	str[i + 1] = '\0';
+	return str;
+}
+
+char *strip_comments(char *str) {
+	int in_string = 0, in_character = 0;
+	int i = 0;
+	while (str[i] != '\0') {
+		if (str[i] == '"' && !in_character) {
+			in_string = !in_string;
+		} else if (str[i] == '\'' && !in_string) {
+			in_character = !in_character;
+		} else if (!in_character && !in_string) {
+			if (str[i] == '#') {
+				str[i] = '\0';
+				break;
+			}
+		}
+		++i;
+	}
+	return str;
+}
+
+list_t *split_string(const char *str, const char *delims) {
+	list_t *res = create_list();
+	int i, j;
+	for (i = 0, j = 0; i < strlen(str) + 1; ++i) {
+		if (strchr(delims, str[i]) || i == strlen(str)) {
+			if (i - j == 0) {
+				continue;
+			}
+			char *left = malloc(i - j + 1);
+			memcpy(left, str + j, i - j);
+			left[i - j] = 0;
+			list_add(res, left);
+			j = i + 1;
+			while (j <= strlen(str) && str[j] && strchr(delims, str[j])) {
+				j++;
+				i++;
+			}
+		}
+	}
+	return res;
+}
+
+void free_flat_list(list_t *list) {
+	int i;
+	for (i = 0; i < list->length; ++i) {
+		free(list->items[i]);
+	}
+	list_free(list);
+}
+
+char *code_strstr(const char *haystack, const char *needle) {
+	/* TODO */
+	return strstr(haystack, needle);
+}
+
+char *code_strchr(const char *str, char delimiter) {
+	int in_string = 0, in_character = 0;
+	int i = 0;
+	while (str[i] != '\0') {
+		if (str[i] == '"' && !in_character) {
+			in_string = !in_string;
+		} else if (str[i] == '\'' && !in_string) {
+			in_character = !in_character;
+		} else if (!in_character && !in_string) {
+			if (str[i] == delimiter) {
+				return (char *)str + i;
+			}
+		}
+		++i;
+	}
+	return NULL;
+}
+
+int unescape_string(char *string) {
+	/* TODO: More C string escapes */
+	int len = strlen(string);
+	int i;
+	for (i = 0; string[i]; ++i) {
+		if (string[i] == '\\') {
+			--len;
+			switch (string[++i]) {
+			case '0':
+				string[i - 1] = '\0';
+				memmove(string + i, string + i + 1, len - i);
+				break;
+			case 'a':
+				string[i - 1] = '\a';
+				memmove(string + i, string + i + 1, len - i);
+				break;
+			case 'b':
+				string[i - 1] = '\b';
+				memmove(string + i, string + i + 1, len - i);
+				break;
+			case 't':
+				string[i - 1] = '\t';
+				memmove(string + i, string + i + 1, len - i);
+				break;
+			case 'n':
+				string[i - 1] = '\n';
+				memmove(string + i, string + i + 1, len - i);
+				break;
+			case 'v':
+				string[i - 1] = '\v';
+				memmove(string + i, string + i + 1, len - i);
+				break;
+			case 'f':
+				string[i - 1] = '\f';
+				memmove(string + i, string + i + 1, len - i);
+				break;
+			case 'r':
+				string[i - 1] = '\r';
+				memmove(string + i, string + i + 1, len - i);
+				break;
+			}
+		}
+	}
+	return len;
+}
diff --git a/sway/stringop.h b/sway/stringop.h
new file mode 100644
index 00000000..74f34ebf
--- /dev/null
+++ b/sway/stringop.h
@@ -0,0 +1,13 @@
+#ifndef _SWAY_STRINGOP_H
+#define _SWAY_STRINGOP_H
+#include "list.h"
+
+char *strip_whitespace(char *str, int *trimmed_start);
+char *strip_comments(char *str);
+list_t *split_string(const char *str, const char *delims);
+void free_flat_list(list_t *list);
+char *code_strchr(const char *string, char delimiter);
+char *code_strstr(const char *haystack, const char *needle);
+int unescape_string(char *string);
+
+#endif