Imported reiserfsprogs-3.6.21

lib/progbar.c

@@ -0,0 +1,117 @@
+#include <stdio.h>
+#include <sys/time.h>
+#include <string.h>
+
+#include "progbar.h"
+
+static char bar[128], spaces[128];
+static const char spinner[] = "\\|/-";
+
+void progbar_init(struct progbar *ctx, const char *units, FILE *fp)
+{
+	memset(ctx, 0, sizeof (*ctx));
+	if (!bar[0])
+		memset(bar, '=', sizeof(bar)-1);
+	if (!spaces[0])
+		memset(spaces, ' ', sizeof(spaces)-1);
+	strncpy(ctx->units, units, sizeof(ctx->units));
+	ctx->file = fp;
+}
+
+
+void progbar_clear(struct progbar * ctx)
+{
+	if (!(ctx->flags & E2F_FLAG_PROG_BAR))
+		return;
+
+	fprintf(ctx->file, "\r%*s\r", 80, " ");
+	fflush(ctx->file);
+	ctx->flags &= ~E2F_FLAG_PROG_BAR;
+}
+
+int progbar_update(struct progbar * ctx, const char *label, int curr, int max,
+                           unsigned int dpynum)
+{
+	int	i;
+	unsigned int	tick;
+	struct timeval	tv;
+	int dpywidth;
+	int fixed_percent;
+	float percent = ((float) curr) / ((float) max) * 100;
+
+	if (ctx->flags & E2F_FLAG_PROG_SUPPRESS)
+		return 0;
+
+	/*
+	 * Calculate the new progress position.  If the
+	 * percentage hasn't changed, then we skip out right
+	 * away.
+	 */
+	fixed_percent = (int) ((10 * percent) + 0.5);
+	if (ctx->progress_last_percent == fixed_percent)
+		return 0;
+	ctx->progress_last_percent = fixed_percent;
+
+	/*
+	 * If we've already updated the spinner once within
+	 * the last 1/8th of a second, no point doing it
+	 * again.
+	 */
+	gettimeofday(&tv, NULL);
+	tick = (tv.tv_sec << 3) + (tv.tv_usec / (1000000 / 8));
+	if ((tick == ctx->progress_last_time) &&
+	    (fixed_percent != 0) && (fixed_percent != 1000))
+		return 0;
+	ctx->progress_last_time = tick;
+
+	/*
+	 * Advance the spinner, and note that the progress bar
+	 * will be on the screen
+	 */
+	ctx->progress_pos = (ctx->progress_pos+1) & 3;
+	ctx->flags |= E2F_FLAG_PROG_BAR;
+
+	dpywidth = 66 - strlen(label);
+	dpywidth = 8 * (dpywidth / 8);
+	if (dpynum)
+		dpywidth -= 8;
+
+	i = ((percent * dpywidth) + 50) / 100;
+	fprintf(ctx->file, "\r%s: |%s%s", label,
+	       bar + (sizeof(bar) - (i+1)),
+	       spaces + (sizeof(spaces) - (dpywidth - i + 1)));
+	if (fixed_percent == 1000)
+		fputc('|', ctx->file);
+	else
+		fputc(spinner[ctx->progress_pos & 3], ctx->file);
+	fprintf(ctx->file, " %4.1f%%  ", percent);
+	if (dpynum)
+		fprintf(ctx->file, "%u%s\r", dpynum, ctx->units);
+	else
+		fputs(" \r", ctx->file);
+
+	if (fixed_percent == 1000)
+		progbar_clear(ctx);
+	fflush(ctx->file);
+
+	return 0;
+}
+
+void
+spinner_init(struct spinner *ctx, FILE *fp)
+{
+	memset(ctx, 0, sizeof (*ctx));
+	ctx->file = fp;
+}
+
+void
+spinner_touch(struct spinner *ctx)
+{
+	fprintf(ctx->file, "%c", spinner[ctx->count++ % 4]);
+}
+
+void
+spinner_clear(struct spinner *ctx)
+{
+	fputs("", ctx->file);
+}