From d53ba841d4feec0096f5f019ae2d304f1edd226e Mon Sep 17 00:00:00 2001 From: =?utf8?q?SZEDER=20G=C3=A1bor?= Date: Fri, 5 Apr 2019 02:45:37 +0200 Subject: [PATCH] progress: assemble percentage and counters in a strbuf before printing MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The following patches in this series want to handle the progress bar's title and changing parts (i.e. the counter and the optional percentage and throughput combined) differently, and need to know the length of the changing parts of the previously displayed progress bar. To prepare for those changes assemble the changing parts in a separate strbuf kept in 'struct progress' before printing. Signed-off-by: SZEDER Gábor Signed-off-by: Junio C Hamano --- progress.c | 35 +++++++++++++++++++++++------------ 1 file changed, 23 insertions(+), 12 deletions(-) diff --git a/progress.c b/progress.c index 9010032446..564845a36b 100644 --- a/progress.c +++ b/progress.c @@ -36,6 +36,7 @@ struct progress { unsigned delay; struct throughput *throughput; uint64_t start_ns; + struct strbuf counters_sb; }; static volatile sig_atomic_t progress_update; @@ -80,31 +81,39 @@ static int is_foreground_fd(int fd) static void display(struct progress *progress, uint64_t n, const char *done) { - const char *eol, *tp; + const char *tp; + struct strbuf *counters_sb = &progress->counters_sb; + int show_update = 0; if (progress->delay && (!progress_update || --progress->delay)) return; progress->last_value = n; tp = (progress->throughput) ? progress->throughput->display.buf : ""; - eol = done ? done : " \r"; if (progress->total) { unsigned percent = n * 100 / progress->total; if (percent != progress->last_percent || progress_update) { progress->last_percent = percent; - if (is_foreground_fd(fileno(stderr)) || done) { - fprintf(stderr, "%s: %3u%% (%"PRIuMAX"/%"PRIuMAX")%s%s", - progress->title, percent, - (uintmax_t)n, (uintmax_t)progress->total, - tp, eol); - fflush(stderr); - } - progress_update = 0; + + strbuf_reset(counters_sb); + strbuf_addf(counters_sb, + "%3u%% (%"PRIuMAX"/%"PRIuMAX")%s", percent, + (uintmax_t)n, (uintmax_t)progress->total, + tp); + show_update = 1; } } else if (progress_update) { + strbuf_reset(counters_sb); + strbuf_addf(counters_sb, "%"PRIuMAX"%s", (uintmax_t)n, tp); + show_update = 1; + } + + if (show_update) { if (is_foreground_fd(fileno(stderr)) || done) { - fprintf(stderr, "%s: %"PRIuMAX"%s%s", - progress->title, (uintmax_t)n, tp, eol); + const char *eol = done ? done : " \r"; + + fprintf(stderr, "%s: %s%s", progress->title, + counters_sb->buf, eol); fflush(stderr); } progress_update = 0; @@ -207,6 +216,7 @@ static struct progress *start_progress_delay(const char *title, uint64_t total, progress->delay = delay; progress->throughput = NULL; progress->start_ns = getnanotime(); + strbuf_init(&progress->counters_sb, 0); set_progress_signal(); return progress; } @@ -250,6 +260,7 @@ void stop_progress_msg(struct progress **p_progress, const char *msg) free(buf); } clear_progress_signal(); + strbuf_release(&progress->counters_sb); if (progress->throughput) strbuf_release(&progress->throughput->display); free(progress->throughput); -- 2.39.2