On Wed, Oct 26, 2022 at 08:42:04AM +0200, Ahmad Fatoum wrote:
> drvinfo can be very long especially for the in-tree defconfigs,
> add optional filtering support:
> 
>   barebox@board:/ drvinfo imx7d
>   Driver  Device(s)
>   --------------------
>   imx7d-src
>           [email protected]
>   imx7d_adc
>           [email protected]
>           [email protected]
> 
>   Use 'devinfo DEVICE' for more information
> 
> Signed-off-by: Ahmad Fatoum <[email protected]>
> ---
>  commands/drvinfo.c | 13 +++++++++++++
>  common/complete.c  | 21 +++++++++++++++++++++
>  include/complete.h |  1 +
>  3 files changed, 35 insertions(+)
> 
> diff --git a/commands/drvinfo.c b/commands/drvinfo.c
> index 9f8f971ee9dd..27ff55f01d90 100644
> --- a/commands/drvinfo.c
> +++ b/commands/drvinfo.c
> @@ -5,15 +5,23 @@
>  #include <common.h>
>  #include <command.h>
>  #include <driver.h>
> +#include <complete.h>
>  
>  static int do_drvinfo(int argc, char *argv[])
>  {
> +     char *filter = NULL;
>       struct driver_d *drv;
>       struct device_d *dev;
>  
> +     if (IS_ENABLED(CONFIG_AUTO_COMPLETE) && argc > 1)
> +             filter = strjoin(" ", &argv[1], argc - 1);

Why does this depend on CONFIG_AUTO_COMPLETE?

> +
>       printf("Driver\tDevice(s)\n");
>       printf("--------------------\n");
>       for_each_driver(drv) {
> +             if (filter && !str_has_prefix(drv->name, filter))
> +                     continue;

I don't see how this is expected to work. When you pass multiple drivers
as argument 'filter' will be a concatenation of multiple driver names
which then matches nothing.

How about using fnmatch? We could then pass things like "*usb*"

Sascha


> +
>               printf("%s\n",drv->name);
>               for_each_device(dev) {
>                       if (dev->driver == drv)
> @@ -24,6 +32,7 @@ static int do_drvinfo(int argc, char *argv[])
>       if (IS_ENABLED(CONFIG_CMD_DEVINFO))
>               printf("\nUse 'devinfo DEVICE' for more information\n");
>  
> +     free(filter);
>       return 0;
>  }
>  
> @@ -31,5 +40,9 @@ static int do_drvinfo(int argc, char *argv[])
>  BAREBOX_CMD_START(drvinfo)
>       .cmd            = do_drvinfo,
>       BAREBOX_CMD_DESC("list compiled-in device drivers")
> +#ifdef CONFIG_AUTO_COMPLETE
> +     BAREBOX_CMD_OPTS("[DRIVER]")
> +#endif
>       BAREBOX_CMD_GROUP(CMD_GRP_INFO)
> +     BAREBOX_CMD_COMPLETE(driver_complete)
>  BAREBOX_CMD_END
> diff --git a/common/complete.c b/common/complete.c
> index ab3c98549314..916d13d776ce 100644
> --- a/common/complete.c
> +++ b/common/complete.c
> @@ -174,6 +174,27 @@ static int device_param_complete(struct device_d *dev, 
> struct string_list *sl,
>       return 0;
>  }
>  
> +int driver_complete(struct string_list *sl, char *instr)
> +{
> +     struct driver_d *drv;
> +     int len;
> +
> +     if (!instr)
> +             instr = "";
> +
> +     len = strlen(instr);
> +
> +     for_each_driver(drv) {
> +             if (strncmp(instr, drv->name, len))
> +                     continue;
> +
> +             string_list_add_asprintf(sl, "%s ", drv->name);
> +     }
> +
> +     return COMPLETE_CONTINUE;
> +}
> +EXPORT_SYMBOL(driver_complete);
> +
>  int empty_complete(struct string_list *sl, char *instr)
>  {
>       return COMPLETE_END;
> diff --git a/include/complete.h b/include/complete.h
> index b0e675b5599f..2068760ac235 100644
> --- a/include/complete.h
> +++ b/include/complete.h
> @@ -14,6 +14,7 @@ void complete_reset(void);
>  
>  int command_complete(struct string_list *sl, char *instr);
>  int device_complete(struct string_list *sl, char *instr);
> +int driver_complete(struct string_list *sl, char *instr);
>  int empty_complete(struct string_list *sl, char *instr);
>  int eth_complete(struct string_list *sl, char *instr);
>  int command_var_complete(struct string_list *sl, char *instr);
> -- 
> 2.30.2
> 
> 
> 

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