linux-kernel - Re: [PATCH v5 2/9] tools, pager: Support overwriting the pager

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Date:   Wed, 19 Sep 2018 15:17:23 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Andi Kleen <andi@...stfloor.org>
Cc:     jolsa@...nel.org, adrian.hunter@...el.com,
        linux-kernel@...r.kernel.org, kim.phillips@....com,
        Andi Kleen <ak@...ux.intel.com>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>
Subject: Re: [PATCH v5 2/9] tools, pager: Support overwriting the pager

Em Tue, Sep 18, 2018 at 05:32:07AM -0700, Andi Kleen escreveu:
> From: Andi Kleen <ak@...ux.intel.com>
> 
> Add an interface to the auto pager code that allows callers
> to overwrite the pager.

Applied,

- Arnaldo
 
> Signed-off-by: Andi Kleen <ak@...ux.intel.com>
> ---
>  tools/lib/subcmd/pager.c | 11 ++++++++++-
>  tools/lib/subcmd/pager.h |  1 +
>  2 files changed, 11 insertions(+), 1 deletion(-)
> 
> diff --git a/tools/lib/subcmd/pager.c b/tools/lib/subcmd/pager.c
> index 9997a8805a82..e3d47b59b14d 100644
> --- a/tools/lib/subcmd/pager.c
> +++ b/tools/lib/subcmd/pager.c
> @@ -23,6 +23,13 @@ void pager_init(const char *pager_env)
>  	subcmd_config.pager_env = pager_env;
>  }
>  
> +static const char *forced_pager;
> +
> +void force_pager(const char *pager)
> +{
> +	forced_pager = pager;
> +}
> +
>  static void pager_preexec(void)
>  {
>  	/*
> @@ -66,7 +73,9 @@ void setup_pager(void)
>  	const char *pager = getenv(subcmd_config.pager_env);
>  	struct winsize sz;
>  
> -	if (!isatty(1))
> +	if (forced_pager)
> +		pager = forced_pager;
> +	if (!isatty(1) && !forced_pager)
>  		return;
>  	if (ioctl(1, TIOCGWINSZ, &sz) == 0)
>  		pager_columns = sz.ws_col;
> diff --git a/tools/lib/subcmd/pager.h b/tools/lib/subcmd/pager.h
> index f1a53cf29880..a818964693ab 100644
> --- a/tools/lib/subcmd/pager.h
> +++ b/tools/lib/subcmd/pager.h
> @@ -7,5 +7,6 @@ extern void pager_init(const char *pager_env);
>  extern void setup_pager(void);
>  extern int pager_in_use(void);
>  extern int pager_get_columns(void);
> +extern void force_pager(const char *);
>  
>  #endif /* __SUBCMD_PAGER_H */
> -- 
> 2.17.1