A big mess of changes all at once.

[dvdrip] / multiprogress.h

diff --git a/multiprogress.h b/multiprogress.h
new file mode 100644 (file)
index 0000000..1db97a8
--- /dev/null
+++ b/multiprogress.h
@@ -0,0 +1,82 @@
+#ifndef MULTIPROGRESS_H
+#define MULTIPROGRESS_H
+
+#include <stdio.h>
+#include <sys/time.h>
+
+struct progress_ttyinfo {
+  FILE *fp;                            /* terminal stream */
+  char *termbuf, *capbuf;              /* buffers for termcap */
+  struct {                             /* terminal capabilities */
+    unsigned f;                                /*   various flags */
+#define TCF_BCE 1u                     /*   erases to background colour */
+    const char *cr, *up, *ce, *cd;     /*   cursor motion */
+    const char *mr, *md, *me;          /*   reverse video, bold */
+    const char *af, *ab, *op;          /*   colour */
+  } cap;
+    unsigned defwd, defht;             /* default width and height */
+};
+#define PROGRESS_TTYINFO_INIT { 0, 0, 0, { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }
+
+struct progress_state {
+  struct progress_ttyinfo tty;         /* terminal state */
+  struct progress_item *items, *end_item; /* list of progress items */
+  unsigned nitems;                     /* number of items */
+  unsigned last_lines;                 /* number written last time */
+  struct timeval tv_update;            /* last update time */
+};
+#define PROGRESS_STATE_INIT { PROGRESS_TTYINFO_INIT, 0, 0, 0, 0, { 0, 0 } }
+
+struct progress_render_state {
+  const struct progress_ttyinfo *tty;  /* terminal state */
+  unsigned width, height;              /* terminal size, in characters */
+  char *linebuf; size_t linesz;                /* output buffer */
+  char *tempbuf; size_t tempsz;                /* scratch buffer */
+  size_t leftsz, rightsz;              /* left and right cursors */
+  unsigned leftwd, rightwd;            /* left and right widths */
+  char *old_bc, *old_up;               /* old fixup strings */
+};
+
+struct progress_item {
+  struct progress_state *parent;       /* controlling progress state */
+  struct progress_item *next, *prev;   /* forward and backward links */
+  void (*render)(struct progress_item */*item*/, /* render function */
+                struct progress_render_state */*rs*/);
+};
+#define PROGRESS_ITEM_INIT { 0, 0, 0, 0 }
+
+extern int progress_init(struct progress_state */*progress*/);
+extern void progress_free(struct progress_state */*progress*/);
+
+extern int progress_clear(struct progress_state */*progress*/);
+
+extern int progress_update(struct progress_state */*progress*/);
+
+extern int progress_additem(struct progress_state */*progress*/,
+                           struct progress_item */*item*/);
+
+extern int progress_removeitem(struct progress_state */*progress*/,
+                              struct progress_item */*item*/);
+
+
+extern int progress_vputleft(struct progress_render_state */*render*/,
+                            const char */*fmt*/, va_list /*ap*/);
+
+extern int progress_vputright(struct progress_render_state */*render*/,
+                             const char */*fmt*/, va_list /*ap*/);
+
+__attribute__((format(printf, 2, 3)))
+extern int progress_putleft(struct progress_render_state */*render*/,
+                           const char */*fmt*/, ...);
+
+__attribute__((format(printf, 2, 3)))
+extern int progress_putright(struct progress_render_state */*render*/,
+                            const char */*fmt*/, ...);
+
+extern int progress_showbar(struct progress_render_state */*render*/,
+                           double /*frac*/);
+
+extern int progress_shownotice(struct progress_render_state */*render*/,
+                              int /*bg*/, int /*fg*/);
+
+#endif