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pathfuncs.c add path_strip_leading_separators()

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added to path_append as well

Change-Id: Ieb6ec4f4c475ca5e60c8246c7f044bcc7651f6bf
This commit is contained in:
William Wilgus 2024-03-29 16:09:56 -04:00 • committed by William Wilgus
parent 777098fca9
commit fe00906abb
3 changed files with 24 additions and 8 deletions
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24
firmware/common/pathfuncs.c
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@ -339,6 +339,23 @@ size_t path_dirname(const char *name, const char **nameptr)
return q - name;
}
/* Removes leading separators from a path
* "" *nameptr->NUL, count=0: ""
* "/" *nameptr->/, count=1: "/"
* "//" *nameptr->2nd /, count=2: "/"
* "a/" *nameptr->a/, count=0: "a/"
* "//b//" *nameptr->2nd /, count=2: "/b//"
* "/c/" *nameptr->/, count=1: "/c/"
*/
size_t path_strip_leading_separators(const char *name, const char **nameptr)
{
const char *p = name;
*nameptr = p;
while (*(p) == PATH_SEPCH && *(++p) == PATH_SEPCH)
*nameptr = p;
return p - name;
}
/* Removes trailing separators from a path
* "" *nameptr->NUL, len=0: ""
* "/" *nameptr->/, len=1: "/"
@ -462,7 +479,7 @@ void path_remove_dot_segments (char *dstpath, const char *path)
size_t path_append_ex(char *buf, const char *basepath, size_t basepath_max,
const char *component, size_t bufsize)
{
size_t len;
size_t len = 0;
bool separate = false;
const char *base = basepath && basepath[0] ? basepath : buf;
if (!base)
@ -471,7 +488,7 @@ size_t path_append_ex(char *buf, const char *basepath, size_t basepath_max,
if (!buf)
bufsize = 0;
if (path_is_absolute(component))
if (path_is_absolute(component)) /* starts with a '/' path separator */
{
/* 'component' is absolute; replace all */
basepath = component;
@ -484,8 +501,9 @@ size_t path_append_ex(char *buf, const char *basepath, size_t basepath_max,
if (base == buf)
len = strlen(buf);
else
else if (basepath)
{
path_strip_leading_separators(basepath, &basepath);
len = strlcpy(buf, basepath, bufsize);
if (basepath_max < len)
{