[PATCH 1/7] params: allow to access first sub-device and params via env

[Alexander Aring]

Hi,

On Sat, Jan 26, 2013 at 12:55:26AM +0100, Jean-Christophe PLAGNIOL-VILLARD wrote:
> this will allow to keep retro-compatiblility and adding
> globalvar multiple device support
> 
>  barebox at Somfy Animeo IP:/
>  # echo $platform.soc.
>  at91sam9260
>  barebox at Somfy Animeo IP:/
>  # echo $platform.soc.name
>  Unknown
>  barebox at Somfy Animeo IP:/
>  # echo $global.dhcp.vendor_id
>  barebox-animeo-ip
> 
> update complete too
> 
> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
> ---
>  common/complete.c |   45 ++++++++++++++++++++++++++++++++++++++++-----
>  lib/parameter.c   |   41 ++++++++++++++++++++++++++++++++++++++++-
>  2 files changed, 80 insertions(+), 6 deletions(-)
> 
> diff --git a/common/complete.c b/common/complete.c
> index 9206ef0..17ee3c4 100644
> --- a/common/complete.c
> +++ b/common/complete.c
> @@ -169,7 +169,7 @@ int device_complete(struct string_list *sl, char *instr)
>  }
>  EXPORT_SYMBOL(device_complete);
>  
> -static int device_param_complete(char *begin, struct device_d *dev,
> +static int device_param_complete(char *begin, char *dev_fullname, struct device_d *dev,
>  				 struct string_list *sl, char *instr)
>  {
>  	struct param_d *param;
> @@ -185,7 +185,7 @@ static int device_param_complete(char *begin, struct device_d *dev,
>  			continue;
>  
>  		string_list_add_asprintf(sl, "%s%s.%s%c",
> -			begin ? begin : "", dev_name(dev), param->name,
> +			begin ? begin : "", dev_fullname, param->name,
>  			begin ? ' ' : '=');
>  	}
>  
> @@ -253,12 +253,47 @@ static int env_param_complete(struct string_list *sl, char *instr, int eval)
>  	}
>  
>  	for_each_device(dev) {
> -		if (!strncmp(instr, dev_name(dev), len)) {
> +		struct device_d *child;
> +		char *devname = asprintf("%s", dev_name(dev));
> +
> +		if (!strncmp(instr, devname, len)) {
>  			if (eval)
> -				device_param_complete("$", dev, sl, instr_param);
> +				device_param_complete("$", devname, dev, sl, instr_param);
>  			else
> -				device_param_complete(NULL, dev, sl, instr_param);
> +				device_param_complete(NULL, devname, dev, sl, instr_param);
> +		}
> +
> +		if (dev->bus) {
> +			free(devname);
> +			continue;
> +		}
> +
> +		device_for_each_child(dev, child) {
> +			char *dev_fullname;
> +			char *child_instr_param;
> +			int child_len;
> +
> +			dev_fullname = asprintf("%s.%s", devname, dev_name(child));
> +			child_instr_param = strchr(instr_param, '.');
> +
> +			if (child_instr_param) {
> +				child_len = (child_instr_param - instr);
> +				child_instr_param++;
> +			} else {
> +				child_len = strlen(instr);
> +				child_instr_param = "";
> +			}
> +
> +			if (!strncmp(instr, dev_fullname, child_len)) {
> +				if (eval)
> +					device_param_complete("$", dev_fullname, child, sl, child_instr_param);
> +				else
> +					device_param_complete(NULL, dev_fullname, child, sl, child_instr_param);
> +			}
> +
> +			free(dev_fullname);
>  		}
> +		free(devname);
>  	}
>  
>  	return 0;
> diff --git a/lib/parameter.c b/lib/parameter.c
> index c00b824..4b7b26a 100644
> --- a/lib/parameter.c
> +++ b/lib/parameter.c
> @@ -28,7 +28,7 @@
>  #include <malloc.h>
>  #include <driver.h>
>  
> -struct param_d *get_param_by_name(struct device_d *dev, const char *name)
> +static struct param_d *__get_param_by_name(struct device_d *dev, const char *name)
>  {
>  	struct param_d *p;
>  
> @@ -40,6 +40,45 @@ struct param_d *get_param_by_name(struct device_d *dev, const char *name)
>  	return NULL;
>  }
>  
> +static struct param_d *get_child_param_by_name(struct device_d *dev, const char *name)
> +{
> +	struct device_d *child;
> +	char *devstr;
> +	char *par;
> +
> +	if (dev->bus)
> +		return NULL;
> +
> +	if (!strchr(name, '.'))
> +		return NULL;
> +
> +	devstr = strdup(name);
> +	par = strchr(devstr, '.');
> +
> +	*par = 0;
> +	par++;
> +
> +	device_for_each_child(dev, child) {
> +		if (!strcmp(devstr, dev_name(child)))
> +			return __get_param_by_name(child, par);
Need to call 'free(devstr)' before return?

> +	}
> +
> +	free(devstr);
> +
> +	return NULL;
> +}
> +
> +struct param_d *get_param_by_name(struct device_d *dev, const char *name)
> +{
> +	struct param_d *param;
> +
> +	param = get_child_param_by_name(dev, name);
> +	if (param)
> +		return param;
> +
> +	return __get_param_by_name(dev, name);
> +}
> +
>  /**
>   * dev_get_param - get the value of a parameter
>   * @param dev	The device
> -- 
> 1.7.10.4
> 
> 
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