1 files changed, 103 insertions, 0 deletions

diff --git a/examples/dte/buffer.h b/examples/dte/buffer.h
new file mode 100644
index 0000000..4450a8f
--- /dev/null
+++ b/examples/dte/buffer.h
@@ -0,0 +1,103 @@
+#ifndef BUFFER_H
+#define BUFFER_H
+
+#include <limits.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <sys/types.h>
+#include <time.h>
+#include "block-iter.h"
+#include "change.h"
+#include "encoding.h"
+#include "options.h"
+#include "syntax/syntax.h"
+#include "util/list.h"
+#include "util/macros.h"
+#include "util/ptr-array.h"
+#include "util/string-view.h"
+#include "util/string.h"
+
+// Subset of stat(3) struct
+typedef struct {
+    dev_t dev;
+    ino_t ino;
+    mode_t mode;
+    uid_t uid;
+    gid_t gid;
+    off_t size;
+    struct timespec mtime;
+} FileInfo;
+
+// A representation of a specific file, as it pertains to editing,
+// including text contents, filename (if saved), undo history and
+// some file-specific metadata and options.
+typedef struct Buffer {
+    ListHead blocks;
+    Change change_head;
+    Change *cur_change;
+    Change *saved_change; // Used to determine if buffer is modified
+    FileInfo file;
+    unsigned long id; // Needed for identifying buffers whose filename is NULL
+    size_t nl;
+    PointerArray views; // Views pointing to this buffer
+    char *display_filename;
+    char *abs_filename;
+    bool readonly;
+    bool temporary;
+    bool stdout_buffer;
+    bool locked;
+    bool setup;
+    bool crlf_newlines;
+    bool bom;
+    Encoding encoding; // Encoding of the file (buffer always contains UTF-8)
+    LocalOptions options;
+    Syntax *syn;
+    long changed_line_min;
+    long changed_line_max;
+    // Index 0 is always syn->states.ptrs[0].
+    // Lowest bit of an invalidated value is 1.
+    PointerArray line_start_states;
+} Buffer;
+
+static inline void mark_all_lines_changed(Buffer *buffer)
+{
+    buffer->changed_line_min = 0;
+    buffer->changed_line_max = LONG_MAX;
+}
+
+static inline bool buffer_modified(const Buffer *buffer)
+{
+    return buffer->saved_change != buffer->cur_change && !buffer->temporary;
+}
+
+static inline BlockIter block_iter(Buffer *buffer)
+{
+    return (BlockIter) {
+        .blk = BLOCK(buffer->blocks.next),
+        .head = &buffer->blocks,
+        .offset = 0
+    };
+}
+
+struct EditorState;
+
+void buffer_mark_lines_changed(Buffer *buffer, long min, long max) NONNULL_ARGS;
+void buffer_set_encoding(Buffer *buffer, Encoding encoding, bool utf8_bom) NONNULL_ARGS;
+const char *buffer_filename(const Buffer *buffer) NONNULL_ARGS_AND_RETURN;
+void set_display_filename(Buffer *buffer, char *name) NONNULL_ARG(1);
+void update_short_filename_cwd(Buffer *buffer, const StringView *home, const char *cwd) NONNULL_ARG(1, 2);
+void update_short_filename(Buffer *buffer, const StringView *home) NONNULL_ARGS;
+Buffer *find_buffer(const PointerArray *buffers, const char *abs_filename) NONNULL_ARGS;
+Buffer *find_buffer_by_id(const PointerArray *buffers, unsigned long id) NONNULL_ARGS;
+Buffer *buffer_new(PointerArray *buffers, const GlobalOptions *gopts, const Encoding *encoding) RETURNS_NONNULL NONNULL_ARG(1, 2);
+Buffer *open_empty_buffer(PointerArray *buffers, const GlobalOptions *gopts) NONNULL_ARGS_AND_RETURN;
+void free_buffer(Buffer *buffer) NONNULL_ARGS;
+void remove_and_free_buffer(PointerArray *buffers, Buffer *buffer) NONNULL_ARGS;
+void free_blocks(Buffer *buffer) NONNULL_ARGS;
+bool buffer_detect_filetype(Buffer *buffer, const PointerArray *filetypes) NONNULL_ARGS;
+void buffer_update_syntax(struct EditorState *e, Buffer *buffer) NONNULL_ARGS;
+void buffer_setup(struct EditorState *e, Buffer *buffer) NONNULL_ARGS;
+void buffer_count_blocks_and_bytes(const Buffer *buffer, uintmax_t counts[2]) NONNULL_ARGS;
+String dump_buffer(const Buffer *buffer) NONNULL_ARGS;
+
+#endif