From 428ae0e4a972be86b9eca74fcdc5f406cc163a61 Mon Sep 17 00:00:00 2001
From: Andreas Baumann <mail@andreasbaumann.cc>
Date: Sat, 12 Sep 2015 10:44:28 +0200
Subject: some progress bar fixes

---
 src/progressbar.c | 49 +++++++++++++++++++++++++++++--------------------
 src/progressbar.h |  1 +
 2 files changed, 30 insertions(+), 20 deletions(-)

diff --git a/src/progressbar.c b/src/progressbar.c
index c83450b..54c7639 100644
--- a/src/progressbar.c
+++ b/src/progressbar.c
@@ -24,6 +24,7 @@ int create_progressbar( cssh_progressbar_t *progressbar, uint64_t min_value, uin
 	progressbar->value = progressbar->min_value;
 	progressbar->total_steps = 0;
 	progressbar->current_step = 0;
+	progressbar->buf = NULL;
 	
 	va_end( va );
 	
@@ -32,7 +33,13 @@ int create_progressbar( cssh_progressbar_t *progressbar, uint64_t min_value, uin
 
 void free_progressbar( cssh_progressbar_t *progressbar )
 {
+	free( progressbar->buf );
+	progressbar->buf = NULL;
 	free( progressbar->label );
+	progressbar->label = NULL;
+	progressbar->value = progressbar->min_value;
+	progressbar->total_steps = 0;
+	progressbar->current_step = 0;
 }
 
 void set_value_of_progressbar( cssh_progressbar_t *progressbar, uint64_t value )
@@ -40,17 +47,27 @@ void set_value_of_progressbar( cssh_progressbar_t *progressbar, uint64_t value )
 	progressbar->value = value;
 }
 
-static void compute_progressbar_steps( cssh_progressbar_t *progressbar )
+static int compute_progressbar_steps( cssh_progressbar_t *progressbar )
 {
 	cssh_progressbar_pool_t *pool = progressbar->pool;
 	
-	progressbar->total_steps = pool->cols - strlen( progressbar->label ) - 2;
+	if( strlen( progressbar->label ) + 2 < pool->cols ) {
+		progressbar->total_steps = pool->cols - strlen( progressbar->label ) - 2;
+	} else {
+		progressbar->total_steps = 0;
+	}
+	progressbar->buf = (char *)malloc( progressbar->total_steps + 1 );
+	if( progressbar->buf == NULL ) {
+		return -1;
+	}
+	
+	return 0;	
 }
 
 void redraw_progressbar( cssh_progressbar_t *progressbar )
 {
 	if( progressbar->total_steps == 0 ) {
-		compute_progressbar_steps( progressbar );
+		(void)compute_progressbar_steps( progressbar );
 	}
 
 	unsigned int new_step = progressbar->value * ( (double)progressbar->total_steps / ( progressbar->max_value - progressbar->min_value ) );
@@ -58,20 +75,12 @@ void redraw_progressbar( cssh_progressbar_t *progressbar )
 		printf( "\n" );
 		return;
 	}
-	
-	char *buf = (char *)malloc( progressbar->total_steps );
-	//~ if( buf == NULL ) {
-		//~ printf( "\33[1E\n" );
-		//~ return;
-	//~ }
-	
-	buf[progressbar->total_steps] = '\0';
-	memset( buf, (int)' ', progressbar->total_steps );
-	memset( buf, (int)'#', progressbar->current_step );
-
-	fprintf( stderr, "%s [%s]\n", progressbar->label, buf );
+		
+	progressbar->buf[progressbar->total_steps] = '\0';
+	memset( progressbar->buf, (int)' ', progressbar->total_steps );
+	memset( progressbar->buf, (int)'#', progressbar->current_step );
 
-	free( buf );
+	fprintf( stderr, "%s [%s]\n", progressbar->label, progressbar->buf );
 
 	progressbar->current_step = new_step;
 }
@@ -138,12 +147,12 @@ int remove_progressbar_from_pool( cssh_progressbar_pool_t *pool, cssh_progressba
 	}
 	
 	for( size_t i = 0; i < pool->N; i++ ) {
-		if( pool->progressbar[i] ) {
-			if( i < pool->N - 1 ) {
-				memmove( &pool->progressbar[i], &pool->progressbar[i+1],
-					( pool->N - i ) * sizeof( cssh_progressbar_t * ) );
+		if( pool->progressbar[i] == progressbar ) {
+			for( size_t j = i; j < pool->N - 1; j++ ) {
+				pool->progressbar[j] = pool->progressbar[j+1];
 			}
 			pool->N--;
+			pool->progressbar[pool->N] = NULL;
 			return 0;
 		}
 	}
diff --git a/src/progressbar.h b/src/progressbar.h
index eb47516..53d8524 100644
--- a/src/progressbar.h
+++ b/src/progressbar.h
@@ -21,6 +21,7 @@ typedef struct cssh_progressbar_t {
 	unsigned int total_steps;
 	unsigned int current_step;
 	struct cssh_progressbar_pool_t *pool;
+	char *buf;
 } cssh_progressbar_t;
 
 typedef struct cssh_progressbar_pool_t {
-- 
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