Big glfw refactor

I did a lot of this in a very ad-hoc fashion with no proper commit
history. As such, the kindest thing to do seemed to be to just squash it
into this one commit.

1 files changed, 112 insertions, 0 deletions

diff --git a/src/console.c b/src/console.c
new file mode 100644
index 0000000..92e578d
--- /dev/null
+++ b/src/console.c
@@ -0,0 +1,112 @@
+#include "console.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+struct imv_console {
+  char *buffer;
+  size_t buffer_len;
+  imv_console_callback callback;
+  void *callback_data;
+};
+
+struct imv_console *imv_console_create(void)
+{
+  struct imv_console *console = calloc(1, sizeof *console);
+  console->buffer_len = 1024;
+  return console;
+}
+
+void imv_console_free(struct imv_console *console)
+{
+  if (console->buffer) {
+    free(console->buffer);
+    console->buffer = NULL;
+  }
+  free(console);
+}
+
+void imv_console_set_command_callback(struct imv_console *console,
+    imv_console_callback callback, void *data)
+{
+  console->callback = callback;
+  console->callback_data = data;
+}
+
+bool imv_console_is_active(struct imv_console *console)
+{
+  return console->buffer != NULL;
+}
+
+void imv_console_activate(struct imv_console *console)
+{
+  if (console->buffer) {
+    return;
+  }
+
+  console->buffer = calloc(1, console->buffer_len);
+}
+
+void imv_console_input(struct imv_console *console, const char *text)
+{
+  if (!console || !console->buffer) {
+    return;
+  }
+
+  strncat(console->buffer, text, console->buffer_len - 1);
+}
+
+bool imv_console_key(struct imv_console *console, const char *key)
+{
+  if (!console || !console->buffer) {
+    return false;
+  }
+
+  if (!strcmp("Escape", key)) {
+    free(console->buffer);
+    console->buffer = NULL;
+    return true;
+  }
+
+  if (!strcmp("Return", key)) {
+    if (console->callback) {
+      console->callback(console->buffer, console->callback_data);
+    }
+    free(console->buffer);
+    console->buffer = NULL;
+    return true;
+  }
+
+  if (!strcmp("BackSpace", key)) {
+    const size_t len = strlen(console->buffer);
+    if (len > 0) {
+      console->buffer[len - 1] = '\0';
+    }
+    return true;
+  }
+
+  return false;
+}
+
+const char *imv_console_prompt(struct imv_console *console)
+{
+  return console->buffer;
+}
+
+const char *imv_console_backlog(struct imv_console *console)
+{
+  (void)console;
+  return NULL;
+}
+
+void imv_console_write(struct imv_console *console, const char *text)
+{
+  (void)console;
+  (void)text;
+}
+
+void imv_console_add_completion(struct imv_console *console, const char *template)
+{
+  (void)console;
+  (void)template;
+}