RTR3DECL(char *) RTUriFileCreate(const char *pszPath)
{
if (!pszPath)
return NULL;
char *pszResult = 0;
char *pszPath1 = 0;
do
{
/* Create the percent encoded strings and calculate the necessary uri
* length. */
pszPath1 = rtUriPercentEncodeN(pszPath, RTSTR_MAX);
if (!pszPath1)
break;
size_t cbSize = 7 /* file:// */ + strlen(pszPath1) + 1; /* plus zero byte */
if (pszPath1[0] != '/')
++cbSize;
char *pszTmp = pszResult = (char*)RTMemAllocZ(cbSize);
if (!pszResult)
break;
/* Compose the target uri string. */
RTStrCatP(&pszTmp, &cbSize, "file://");
if (pszPath1[0] != '/')
RTStrCatP(&pszTmp, &cbSize, "/");
RTStrCatP(&pszTmp, &cbSize, pszPath1);
}while (0);
/* Cleanup */
if (pszPath1)
RTStrFree(pszPath1);
return pszResult;
}
RTR3DECL(char *) RTUriCreate(const char *pszScheme, const char *pszAuthority, const char *pszPath, const char *pszQuery, const char *pszFragment)
{
if (!pszScheme) /* Scheme is minimum requirement */
return NULL;
char *pszResult = 0;
char *pszAuthority1 = 0;
char *pszPath1 = 0;
char *pszQuery1 = 0;
char *pszFragment1 = 0;
do
{
/* Create the percent encoded strings and calculate the necessary uri
* length. */
size_t cbSize = strlen(pszScheme) + 1 + 1; /* plus zero byte */
if (pszAuthority)
{
pszAuthority1 = rtUriPercentEncodeN(pszAuthority, RTSTR_MAX);
if (!pszAuthority1)
break;
cbSize += strlen(pszAuthority1) + 2;
}
if (pszPath)
{
pszPath1 = rtUriPercentEncodeN(pszPath, RTSTR_MAX);
if (!pszPath1)
break;
cbSize += strlen(pszPath1);
}
if (pszQuery)
{
pszQuery1 = rtUriPercentEncodeN(pszQuery, RTSTR_MAX);
if (!pszQuery1)
break;
cbSize += strlen(pszQuery1) + 1;
}
if (pszFragment)
{
pszFragment1 = rtUriPercentEncodeN(pszFragment, RTSTR_MAX);
if (!pszFragment1)
break;
cbSize += strlen(pszFragment1) + 1;
}
char *pszTmp = pszResult = (char*)RTMemAllocZ(cbSize);
if (!pszResult)
break;
/* Compose the target uri string. */
RTStrCatP(&pszTmp, &cbSize, pszScheme);
RTStrCatP(&pszTmp, &cbSize, ":");
if (pszAuthority1)
{
RTStrCatP(&pszTmp, &cbSize, "//");
RTStrCatP(&pszTmp, &cbSize, pszAuthority1);
}
if (pszPath1)
{
RTStrCatP(&pszTmp, &cbSize, pszPath1);
}
if (pszQuery1)
{
RTStrCatP(&pszTmp, &cbSize, "?");
RTStrCatP(&pszTmp, &cbSize, pszQuery1);
}
if (pszFragment1)
{
RTStrCatP(&pszTmp, &cbSize, "#");
RTStrCatP(&pszTmp, &cbSize, pszFragment1);
}
}while (0);
/* Cleanup */
if (pszAuthority1)
RTStrFree(pszAuthority1);
if (pszPath1)
RTStrFree(pszPath1);
if (pszQuery1)
RTStrFree(pszQuery1);
if (pszFragment1)
RTStrFree(pszFragment1);
return pszResult;
}
RTDECL(int) RTPathCalcRelative(char *pszPathDst, size_t cbPathDst,
const char *pszPathFrom,
const char *pszPathTo)
{
int rc = VINF_SUCCESS;
AssertPtrReturn(pszPathDst, VERR_INVALID_POINTER);
AssertReturn(cbPathDst, VERR_INVALID_PARAMETER);
AssertPtrReturn(pszPathFrom, VERR_INVALID_POINTER);
AssertPtrReturn(pszPathTo, VERR_INVALID_POINTER);
AssertReturn(RTPathStartsWithRoot(pszPathFrom), VERR_INVALID_PARAMETER);
AssertReturn(RTPathStartsWithRoot(pszPathTo), VERR_INVALID_PARAMETER);
AssertReturn(RTStrCmp(pszPathFrom, pszPathTo), VERR_INVALID_PARAMETER);
/*
* Check for different root specifiers (drive letters), creating a relative path doesn't work here.
* @todo: How to handle case insensitive root specifiers correctly?
*/
size_t offRootFrom = rtPathRootSpecLen(pszPathFrom);
size_t offRootTo = rtPathRootSpecLen(pszPathTo);
if ( offRootFrom != offRootTo
|| RTStrNCmp(pszPathFrom, pszPathTo, offRootFrom))
return VERR_NOT_SUPPORTED;
/* Filter out the parent path which is equal to both paths. */
while ( *pszPathFrom == *pszPathTo
&& *pszPathFrom != '\0'
&& *pszPathTo != '\0')
{
pszPathFrom++;
pszPathTo++;
}
/*
* Because path components can start with an equal string but differ afterwards we
* need to go back to the beginning of the current component.
*/
while (!RTPATH_IS_SEP(*pszPathFrom))
pszPathFrom--;
pszPathFrom++; /* Skip path separator. */
while (!RTPATH_IS_SEP(*pszPathTo))
pszPathTo--;
pszPathTo++; /* Skip path separator. */
/* Paths point to the first non equal component now. */
char aszPathTmp[RTPATH_MAX + 1];
unsigned offPathTmp = 0;
/* Create the part to go up from pszPathFrom. */
while (*pszPathFrom != '\0')
{
while ( !RTPATH_IS_SEP(*pszPathFrom)
&& *pszPathFrom != '\0')
pszPathFrom++;
if (RTPATH_IS_SEP(*pszPathFrom))
{
if (offPathTmp + 3 >= sizeof(aszPathTmp) - 1)
return VERR_FILENAME_TOO_LONG;
aszPathTmp[offPathTmp++] = '.';
aszPathTmp[offPathTmp++] = '.';
aszPathTmp[offPathTmp++] = RTPATH_SLASH;
pszPathFrom++;
}
}
aszPathTmp[offPathTmp] = '\0';
/* Now append the rest of pszPathTo to the final path. */
char *pszPathTmp = &aszPathTmp[offPathTmp];
size_t cbPathTmp = sizeof(aszPathTmp) - offPathTmp - 1;
rc = RTStrCatP(&pszPathTmp, &cbPathTmp, pszPathTo);
if (RT_SUCCESS(rc))
{
*pszPathTmp = '\0';
size_t cchPathTmp = strlen(aszPathTmp);
if (cchPathTmp >= cbPathDst)
return VERR_BUFFER_OVERFLOW;
memcpy(pszPathDst, aszPathTmp, cchPathTmp + 1);
}
else
rc = VERR_FILENAME_TOO_LONG;
return rc;
}
