mdw@git.distorted.org.uk Git - dvdrip/blob - multiprogress.h

   1 #ifndef MULTIPROGRESS_H
   2 #define MULTIPROGRESS_H
   3
   4 #include <stdio.h>
   5 #include <sys/time.h>
   6
   7 struct progress_ttyinfo {
   8   FILE *fp;                             /* terminal stream */
   9   char *termbuf, *capbuf;               /* buffers for termcap */
  10   struct {                              /* terminal capabilities */
  11     unsigned f;                         /*   various flags */
  12 #define TCF_BCE 1u                      /*   erases to background colour */
  13     const char *cr, *nw, *up, *ce, *cd; /*   cursor motion */
  14     const char *mr, *md, *me;           /*   reverse video, bold */
  15     const char *af, *ab, *op;           /*   colour */
  16   } cap;
  17   unsigned defwd, defht;                /* default width and height */
  18 };
  19 #define PROGRESS_TTYINFO_INIT                                           \
  20         { 0,  0, 0,  { 0,  0, 0, 0, 0, 0,  0, 0, 0,  0, 0, 0 },  80, 25 }
  21
  22 struct progress_state {
  23   struct progress_ttyinfo tty;          /* terminal state */
  24   struct progress_item *items, *end_item; /* list of progress items */
  25   unsigned nitems;                      /* number of items */
  26   unsigned last_lines;                  /* number written last time */
  27   struct timeval tv_update;             /* last update time */
  28 };
  29 #define PROGRESS_STATE_INIT { PROGRESS_TTYINFO_INIT, 0, 0, 0, 0, { 0, 0 } }
  30
  31 struct progress_render_state {
  32   const struct progress_ttyinfo *tty;   /* terminal state */
  33   unsigned width, height;               /* terminal size, in characters */
  34   char *linebuf; size_t linesz;         /* output buffer */
  35   char *tempbuf; size_t tempsz;         /* scratch buffer */
  36   size_t leftsz, rightsz;               /* left and right cursors */
  37   unsigned leftwd, rightwd;             /* left and right widths */
  38   char *old_bc, *old_up;                /* old fixup strings */
  39 };
  40
  41 struct progress_item {
  42   struct progress_state *parent;        /* controlling progress state */
  43   struct progress_item *next, *prev;    /* forward and backward links */
  44   void (*render)(struct progress_item */*item*/, /* render function */
  45                  struct progress_render_state */*rs*/);
  46 };
  47 #define PROGRESS_ITEM_INIT { 0, 0, 0, 0 }
  48
  49 extern int progress_init(struct progress_state */*progress*/);
  50 extern void progress_free(struct progress_state */*progress*/);
  51
  52 extern int progress_clear(struct progress_state */*progress*/);
  53
  54 extern int progress_update(struct progress_state */*progress*/);
  55
  56 extern int progress_additem(struct progress_state */*progress*/,
  57                             struct progress_item */*item*/);
  58
  59 extern int progress_removeitem(struct progress_state */*progress*/,
  60                                struct progress_item */*item*/);
  61
  62
  63 extern int progress_vputleft(struct progress_render_state */*render*/,
  64                              const char */*fmt*/, va_list /*ap*/);
  65
  66 extern int progress_vputright(struct progress_render_state */*render*/,
  67                               const char */*fmt*/, va_list /*ap*/);
  68
  69 __attribute__((format(printf, 2, 3)))
  70 extern int progress_putleft(struct progress_render_state */*render*/,
  71                             const char */*fmt*/, ...);
  72
  73 __attribute__((format(printf, 2, 3)))
  74 extern int progress_putright(struct progress_render_state */*render*/,
  75                              const char */*fmt*/, ...);
  76
  77 extern int progress_showbar(struct progress_render_state */*render*/,
  78                             double /*frac*/);
  79
  80 extern int progress_shownotice(struct progress_render_state */*render*/,
  81                                int /*bg*/, int /*fg*/);
  82
  83 #endif