More progress bar aesthetic changes

This commit introduces two new changes to how the progress bar looks:
1. Support the --progress=bar:noscroll option which will prevent the filename
   from scrolling in the progress bar
2. Print human readable value for the amount already downloaded for any file

doc/ChangeLog

@@ -1,3 +1,7 @@
+2014-05-24  Darshit Shah  <darnir@gmail.com>
+
+	* wget.texi: Document noscroll parameter to progress=bar
+
 2014-05-01  Darshit Shah  <darnir@gmail.com>
 
 	* wget.texi: Add documentation for --show-progress

doc/wget.texi

@@ -732,7 +732,12 @@ Use @samp{--progress=dot} to switch to the ``dot'' display.  It traces
 the retrieval by printing dots on the screen, each dot representing a
 fixed amount of downloaded data.
 
-When using the dotted retrieval, you may also set the @dfn{style} by
+The progress @var{type} can also take one or more parameters.  The parameters
+vary based on the @var{type} selected.  Parameters to @var{type} are passed by
+appending them to the type sperated by a colon (:) like this:
+@samp{--progress=@var{type}:@var{parameter1}:@var{parameter2}}.
+
+When using the dotted retrieval, you may set the @dfn{style} by
 specifying the type as @samp{dot:@var{style}}.  Different styles assign
 different meaning to one dot.  With the @code{default} style each dot
 represents 1K, there are ten dots in a cluster and 50 dots in a line.
@@ -745,11 +750,25 @@ If @code{mega} is not enough then you can use the @code{giga}
 style---each dot represents 1M retrieved, there are eight dots in a
 cluster, and 32 dots on each line (so each line contains 32M).
 
+With @samp{--progress=bar}, there are currently two possible parameters,
+@var{force} and @var{noscroll}.
+
+When the output is not a TTY, the progress bar always falls back to ``dot'',
+even if @samp{--progress=bar} was passed to Wget during invokation. This
+behaviour can be overridden and the ``bar'' output forced by using the ``force''
+parameter as @samp{--progress=bar:force}.
+
+By default, the @samp{bar} style progress bar scroll the name of the file from
+left to right for the file being downloaded if the filename exceeds the maximum
+length allotted for its display.  In certain cases, such as with
+@samp{--progress=bar:force}, one may not want the scrolling filename in the
+progress bar.  By passing the ``noscroll'' parameter, Wget can be forced to
+display as much of the filename as possible without scrolling through it.
+
 Note that you can set the default style using the @code{progress}
 command in @file{.wgetrc}.  That setting may be overridden from the
-command line.  The exception is that, when the output is not a TTY, the
+command line.  For example, to force the bar output without scrolling,
-``dot'' progress will be favored over ``bar''.  To force the bar output,
+use @samp{--progress=bar:force:noscroll}.
-use @samp{--progress=bar:force}.
 
 @item --show-progress
 Force wget to display the progress bar in any verbosity.

src/ChangeLog

@@ -1,3 +1,21 @@
+2014-05-20  Darshit Shah  <darnir@gmail.com>
+
+	* utils.c (human_readable): Add new parameters, acc and decimals for the
+	function. acc decides the number under which decimal values are shown for a
+	certain value, while decimals decides the number of decimal digits displayed
+	* utils.h (human_readable): Update declartion of the function
+	* ftp.c (print_length): Update call to human_readable
+	* http.c (gethttp): Same
+	* init.c (defaults): Enable scrolling filenames by default
+	* main.c (main): Update call to human_readable
+	* options.h (options): Add new option noscroll
+	* progress.c (create_image): Update the look of the progress bar. Human
+	readable download size by default and add support for noscroll.
+	(dot_set_params, bar_set_params): Change paramter to char * since strtok
+	needs to modify the string.
+	(bar_set_params): Add support for noscroll parameter to bar.
+
+
 2014-05-03  Tim Ruehsen  <tim.ruehsen@gmx.de>
 
 	* ftp-ls.c (ftp_parse_vms_ls): Explicitly typecast strlen's output

src/ftp.c

@@ -221,13 +221,13 @@ print_length (wgint size, wgint start, bool authoritative)
 {
   logprintf (LOG_VERBOSE, _("Length: %s"), number_to_static_string (size));
   if (size >= 1024)
-    logprintf (LOG_VERBOSE, " (%s)", human_readable (size));
+    logprintf (LOG_VERBOSE, " (%s)", human_readable (size, 10, 1));
   if (start > 0)
     {
       if (size - start >= 1024)
         logprintf (LOG_VERBOSE, _(", %s (%s) remaining"),
                    number_to_static_string (size - start),
-                   human_readable (size - start));
+                   human_readable (size - start, 10, 1));
       else
         logprintf (LOG_VERBOSE, _(", %s remaining"),
                    number_to_static_string (size - start));

src/http.c

@@ -2804,13 +2804,13 @@ read_header:
               logputs (LOG_VERBOSE, number_to_static_string (contlen + contrange));
               if (contlen + contrange >= 1024)
                 logprintf (LOG_VERBOSE, " (%s)",
-                           human_readable (contlen + contrange));
+                           human_readable (contlen + contrange, 10, 1));
               if (contrange)
                 {
                   if (contlen >= 1024)
                     logprintf (LOG_VERBOSE, _(", %s (%s) remaining"),
                                number_to_static_string (contlen),
-                               human_readable (contlen));
+                               human_readable (contlen, 10, 1));
                   else
                     logprintf (LOG_VERBOSE, _(", %s remaining"),
                                number_to_static_string (contlen));

src/init.c

@@ -413,6 +413,7 @@ defaults (void)
   /* Use a negative value to mark the absence of --start-pos option */
   opt.start_pos = -1;
   opt.show_progress = false;
+  opt.noscroll = false;
 }
 
 /* Return the user's home directory (strdup-ed), or NULL if none is

src/main.c

@@ -1714,7 +1714,7 @@ outputting to a regular file.\n"));
 		 datetime_str (time (NULL)),
 		 wall_time,
 		 numurls,
-		 human_readable (total_downloaded_bytes),
+		 human_readable (total_downloaded_bytes, 10, 1),
 		 download_time,
 		 retr_rate (total_downloaded_bytes, total_download_time));
       xfree (wall_time);
@@ -1724,7 +1724,7 @@ outputting to a regular file.\n"));
       if (opt.quota && total_downloaded_bytes > opt.quota)
         logprintf (LOG_NOTQUIET,
                    _("Download quota of %s EXCEEDED!\n"),
-                   human_readable (opt.quota));
+                   human_readable (opt.quota, 10, 1));
     }
 
   if (opt.cookies_output)

src/options.h

@@ -135,6 +135,7 @@ struct options
   char *base_href;
   char *progress_type;		/* progress indicator type. */
   bool show_progress;        /* Show only the progress bar */
+  bool noscroll;             /* Don't scroll the filename in the progressbar */
   char *proxy_user; /*oli*/
   char *proxy_passwd;
 

src/progress.c

@@ -51,7 +51,7 @@ struct progress_implementation {
   void (*update) (void *, wgint, double);
   void (*draw) (void *);
   void (*finish) (void *, double);
-  void (*set_params) (const char *);
+  void (*set_params) (char *);
 };
 
 /* Necessary forward declarations. */
@@ -60,13 +60,13 @@ static void *dot_create (const char *, wgint, wgint);
 static void dot_update (void *, wgint, double);
 static void dot_finish (void *, double);
 static void dot_draw (void *);
-static void dot_set_params (const char *);
+static void dot_set_params (char *);
 
 static void *bar_create (const char *, wgint, wgint);
 static void bar_update (void *, wgint, double);
 static void bar_draw (void *);
 static void bar_finish (void *, double);
-static void bar_set_params (const char *);
+static void bar_set_params (char *);
 
 static struct progress_implementation implementations[] = {
   { "dot", 0, dot_create, dot_update, dot_draw, dot_finish, dot_set_params },
@@ -112,7 +112,7 @@ set_progress_implementation (const char *name)
 {
   size_t i, namelen;
   struct progress_implementation *pi = implementations;
-  const char *colon;
+  char *colon;
 
   if (!name)
     name = DEFAULT_PROGRESS_IMPLEMENTATION;
@@ -419,7 +419,7 @@ dot_finish (void *progress, double dltime)
    giga.  */
 
 static void
-dot_set_params (const char *params)
+dot_set_params (char *params)
 {
   if (!params || !*params)
     params = opt.dot_style;
@@ -889,7 +889,7 @@ create_image (struct bar_progress *bp, double dl_total_time, bool done)
   int orig_filename_len = strlen (bp->f_download);
 
   /* The progress bar should look like this:
-     file xx% [=======>             ] nn,nnn 12.34KB/s  eta 36m 51s
+     file xx% [=======>             ] nnn.nnK 12.34KB/s  eta 36m 51s
 
      Calculate the geometry.  The idea is to assign as much room as
      possible to the progress bar.  The other idea is to never let
@@ -898,17 +898,26 @@ create_image (struct bar_progress *bp, double dl_total_time, bool done)
      It would be especially bad for the progress bar to be resized
      randomly.
 
-     "file "           - Downloaded filename      - MAX MAX_FILENAME_LEN chars + 1
+     "file "           - Downloaded filename      - MAX_FILENAME_LEN chars + 1
      "xx% " or "100%"  - percentage               - 4 chars
      "[]"              - progress bar decorations - 2 chars
-     " nnn,nnn,nnn"    - downloaded bytes         - 12 chars or very rarely more
+     " nnn.nnK"        - downloaded bytes         - 7 chars + 1
-     " 12.5KB/s"       - download rate            - 9 chars
+     " 12.5KB/s"       - download rate            - 8 chars + 1
      "  eta 36m 51s"   - ETA                      - 14 chars
 
      "=====>..."       - progress bar             - the rest
   */
-  int dlbytes_size = 1 + MAX (size_grouped_len, 11);
+
-  int progress_size = bp->width - (MAX_FILENAME_LEN + 1 + 4 + 2 + dlbytes_size + 8 + 14);
+#define PROGRESS_FILENAME_LEN  MAX_FILENAME_LEN + 1
+#define PROGRESS_PERCENT_LEN   4
+#define PROGRESS_DECORAT_LEN   2
+#define PROGRESS_FILESIZE_LEN  7 + 1
+#define PROGRESS_DWNLOAD_RATE  8 + 1
+#define PROGRESS_ETA_LEN       14
+
+  int progress_size = bp->width - (PROGRESS_FILENAME_LEN + PROGRESS_PERCENT_LEN +
+                                   PROGRESS_DECORAT_LEN + PROGRESS_FILESIZE_LEN +
+                                   PROGRESS_DWNLOAD_RATE + PROGRESS_ETA_LEN);
 
   /* The difference between the number of bytes used,
      and the number of columns used. */
@@ -929,7 +938,7 @@ create_image (struct bar_progress *bp, double dl_total_time, bool done)
     {
       int offset;
 
-      if (orig_filename_len > MAX_FILENAME_LEN)
+      if (((orig_filename_len > MAX_FILENAME_LEN) && !opt.noscroll) && !done)
         offset = ((int) bp->tick) % (orig_filename_len - MAX_FILENAME_LEN);
       else
         offset = 0;
@@ -1014,13 +1023,20 @@ create_image (struct bar_progress *bp, double dl_total_time, bool done)
     }
  ++bp->tick;
 
-  /* " 234,567,890" */
+  /* " 234.56M" */
-  sprintf (p, " %s", size_grouped);
+  const char * down_size = human_readable (size, 1000, 2);
+  int cols_diff = 7 - count_cols (down_size);
+  while (cols_diff > 0)
+  {
+    *p++=' ';
+    cols_diff--;
+  }
+  sprintf (p, " %s", down_size);
   move_to_end (p);
-  /* Pad with spaces to 11 chars for the size_grouped field;
+  /* Pad with spaces to 7 chars for the size_grouped field;
    * couldn't use the field width specifier in sprintf, because
    * it counts in bytes, not characters. */
-  for (size_grouped_pad = 11 - size_grouped_len;
+  for (size_grouped_pad = PROGRESS_FILESIZE_LEN - 7;
        size_grouped_pad > 0;
        --size_grouped_pad)
     {
@@ -1126,13 +1142,21 @@ display_image (char *buf)
 }
 
 static void
-bar_set_params (const char *params)
+bar_set_params (char *params)
 {
   char *term = getenv ("TERM");
 
-  if (params
+  if (params)
-      && 0 == strcmp (params, "force"))
+    {
+      char *param = strtok (params, ":");
+      do
+        {
+          if (0 == strcmp (param, "force"))
             current_impl_locked = 1;
+          else if (0 == strcmp (param, "noscroll"))
+            opt.noscroll = true;
+        } while ((param = strtok (NULL, ":")) != NULL);
+    }
 
   if ((opt.lfilename
 #ifdef HAVE_ISATTY

src/utils.c

@@ -1523,7 +1523,7 @@ with_thousand_seps (wgint n)
    some detail.  */
 
 char *
-human_readable (HR_NUMTYPE n)
+human_readable (HR_NUMTYPE n, const int acc, const int decimals)
 {
   /* These suffixes are compatible with those of GNU `ls -lh'. */
   static char powers[] =
@@ -1556,10 +1556,10 @@ human_readable (HR_NUMTYPE n)
       if ((n / 1024) < 1024 || i == countof (powers) - 1)
         {
           double val = n / 1024.0;
-          /* Print values smaller than 10 with one decimal digits, and
+          /* Print values smaller than the accuracy level (acc) with (decimal)
-             others without any decimals.  */
+           * decimal digits, and others without any decimals.  */
           snprintf (buf, sizeof (buf), "%.*f%c",
-                    val < 10 ? 1 : 0, val, powers[i]);
+                    val < acc ? decimals : 0, val, powers[i]);
           return buf;
         }
       n /= 1024;

src/utils.h

@@ -121,7 +121,7 @@ const char *with_thousand_seps (wgint);
 #else
 # define HR_NUMTYPE double
 #endif
-char *human_readable (HR_NUMTYPE);
+char *human_readable (HR_NUMTYPE, const int, const int);
 
 
 int numdigit (wgint);