[U-Boot] [PATCH] Ignore all Carriage Returns when importing an environment.

[Marek Vasut <marex@denx.de>]

Dear Alexander Holler,

> This is used for compatibility with text files which are
> using CRLF instead of LF as the end of a line.
> 
> Signed-off-by: Alexander Holler <holler@ahsoftware.de>

Why don't you run the file trough dos2unix or tr -d '\r' ?

> ---
>  lib/hashtable.c |   18 +++++++++++++++---
>  1 files changed, 15 insertions(+), 3 deletions(-)
> 
> diff --git a/lib/hashtable.c b/lib/hashtable.c
> index abd61c8..6e146ce 100644
> --- a/lib/hashtable.c
> +++ b/lib/hashtable.c
> @@ -623,9 +623,9 @@ ssize_t hexport_r(struct hsearch_data *htab, const char
> sep, * (entries separated by newline characters).
>   *
>   * To allow for nicely formatted text input, leading white space
> - * (sequences of SPACE and TAB chars) is ignored, and entries starting
> - * (after removal of any leading white space) with a '#' character are
> - * considered comments and ignored.
> + * (sequences of SPACE and TAB chars) is ignored, all Carriage Returns
> + * are ignored and entries starting (after removal of any leading white
> + * space) with a '#' character are considered comments and ignored.
>   *
>   * [NOTE: this means that a variable name cannot start with a '#'
>   * character.]
> @@ -642,6 +642,7 @@ int himport_r(struct hsearch_data *htab,
>  	      const char *env, size_t size, const char sep, int flag)
>  {
>  	char *data, *sp, *dp, *name, *value;
> +	unsigned ignored_crs;
> 
>  	/* Test for correct arguments.  */
>  	if (htab == NULL) {
> @@ -698,6 +699,17 @@ int himport_r(struct hsearch_data *htab,
>  		}
>  	}
> 
> +	/* Remove all Carriage Returns */
> +	ignored_crs = 0;
> +	for(;dp < data + size && *dp; ++dp) {
> +		if( *dp == '\r' )
> +			++ignored_crs;
> +		else if(ignored_crs)
> +			*(dp-ignored_crs) = *dp;
> +	}
> +	size -= ignored_crs;
> +	dp = data;
> +
>  	/* Parse environment; allow for '\0' and 'sep' as separators */
>  	do {
>  		ENTRY e, *rv;

Best regards,
Marek Vasut