1 files changed, 164 insertions, 0 deletions
diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000..9f388a0
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,164 @@
+#include "app.h"
+#include "config.h"
+#include "font.h"
+#include "render.h"
+
+#include <GLFW/glfw3.h>
+
+#include <stdio.h>
+#include <string.h>
+
+#define WINDOW_WIDTH 1000
+#define WINDOW_HEIGHT 700
+
+static void print_usage(const char *argv0) {
+    fprintf(stderr, "usage:\n");
+    fprintf(stderr, "  %s [--config path/to/ecexrc.c] [--font path/to/font.ttf]\n", argv0);
+    fprintf(stderr, "\n");
+    fprintf(stderr, "keys:\n");
+    fprintf(stderr, "  F1 opens M-x\n");
+    fprintf(stderr, "  Tab completes M-x command names\n");
+    fprintf(stderr, "  Alt+x opens M-x when the OS/window-manager allows it\n");
+    fprintf(stderr, "  C-x is reserved for prefix maps\n");
+    fprintf(stderr, "\n");
+    fprintf(stderr, "env:\n");
+    fprintf(stderr, "  ECEX_FONT=/path/to/font.ttf\n");
+    fprintf(stderr, "  ECEX_INCLUDE=/path/to/ecex/include\n");
+}
+
+static int parse_args(int argc,
+                      char **argv,
+                      const char **config_path,
+                      const char **font_path_arg) {
+    *config_path = NULL;
+    *font_path_arg = NULL;
+
+    for (int i = 1; i < argc; i++) {
+        if (strcmp(argv[i], "--config") == 0) {
+            if (i + 1 >= argc) {
+                print_usage(argv[0]);
+                return -1;
+            }
+
+            *config_path = argv[++i];
+        } else if (strcmp(argv[i], "--font") == 0) {
+            if (i + 1 >= argc) {
+                print_usage(argv[0]);
+                return -1;
+            }
+
+            *font_path_arg = argv[++i];
+        } else if (strcmp(argv[i], "--help") == 0 ||
+                   strcmp(argv[i], "-h") == 0) {
+            print_usage(argv[0]);
+            return 1;
+        } else {
+            *font_path_arg = argv[i];
+        }
+    }
+
+    return 0;
+}
+
+static const char *select_font_path(ecex_t *ed, const char *font_path_arg) {
+    if (font_path_arg) return font_path_arg;
+    if (ed && ed->theme.font_path) return ed->theme.font_path;
+    return font_choose_path(NULL);
+}
+
+int main(int argc, char **argv) {
+    const char *config_path = NULL;
+    const char *font_path_arg = NULL;
+
+    int args_result = parse_args(argc, argv, &config_path, &font_path_arg);
+    if (args_result != 0) {
+        return args_result < 0 ? 1 : 0;
+    }
+
+    ecex_t *ed = ecex_new();
+    if (!ed) {
+        fprintf(stderr, "failed to create editor\n");
+        return 1;
+    }
+
+    if (config_path) {
+        if (ecex_load_c_config(ed, config_path) != 0) {
+            fprintf(stderr, "ecex: continuing without config\n");
+        }
+    }
+
+    if (!glfwInit()) {
+        fprintf(stderr, "failed to initialize GLFW\n");
+        ecex_free(ed);
+        return 1;
+    }
+
+    GLFWwindow *window = glfwCreateWindow(
+        WINDOW_WIDTH,
+        WINDOW_HEIGHT,
+        "ecex",
+        NULL,
+        NULL
+    );
+
+    if (!window) {
+        fprintf(stderr, "failed to create GLFW window\n");
+        glfwTerminate();
+        ecex_free(ed);
+        return 1;
+    }
+
+    glfwMakeContextCurrent(window);
+    glfwSwapInterval(1);
+
+    app_t app;
+    app_init(&app, ed);
+    app_set_window(&app, window);
+
+    const char *font_path = select_font_path(ed, font_path_arg);
+    if (!font_path) {
+        fprintf(stderr, "ecex: could not find a font automatically\n");
+        fprintf(stderr, "try:\n");
+        fprintf(stderr, "  export ECEX_FONT=/path/to/font.ttf\n");
+        fprintf(stderr, "  %s --font /path/to/font.ttf\n", argv[0]);
+
+        glfwDestroyWindow(window);
+        glfwTerminate();
+        ecex_free(ed);
+        return 1;
+    }
+
+    if (font_load(&app.font, font_path, ed->theme.font_size) != 0) {
+        fprintf(stderr, "ecex: could not load font\n");
+        fprintf(stderr, "try an explicit font path:\n");
+        fprintf(stderr, "  %s --font /path/to/font.ttf\n", argv[0]);
+
+        glfwDestroyWindow(window);
+        glfwTerminate();
+        ecex_free(ed);
+        return 1;
+    }
+
+    snprintf(app.font_path, sizeof(app.font_path), "%s", font_path);
+
+    app_install_callbacks(&app);
+    app_message(&app, "F1 for M-x. Tab completes commands.");
+
+    while (!glfwWindowShouldClose(window) && !ed->should_quit) {
+        if (app.dirty) {
+            render(&app);
+            glfwSwapBuffers(window);
+            app.dirty = 0;
+        }
+
+        glfwWaitEvents();
+    }
+
+    font_free(&app.font);
+
+    glfwDestroyWindow(window);
+    glfwTerminate();
+
+    ecex_free(ed);
+    return 0;
+}