Rlist *RlistFromSplitString(const char *string, char sep)
/* Splits a string containing a separator like ","
into a linked list of separate items, supports
escaping separators, e.g. \, */
{
if (string == NULL)
{
return NULL;
}
Rlist *liststart = NULL;
char node[CF_MAXVARSIZE];
int maxlen = strlen(string);
CfDebug("SplitStringAsRList(%s)\n", string);
for (const char *sp = string; *sp != '\0'; sp++)
{
if (*sp == '\0' || sp > string + maxlen)
{
break;
}
memset(node, 0, CF_MAXVARSIZE);
sp += SubStrnCopyChr(node, sp, CF_MAXVARSIZE, sep);
RlistAppendScalar(&liststart, node);
}
return liststart;
}
Rlist *RlistFromSplitString(const char *string, char sep)
/* Splits a string on a separator - e.g. "," - into a linked list of
* separate items. Supports escaping separators - e.g. "\," isn't a
* separator, it contributes a simple "," in a list entry. */
{
if (string == NULL || string[0] == '\0')
{
return NULL;
}
Rlist *liststart = NULL;
for (const char *sp = string; *sp != '\0';)
{
sp += SubStrnCopyChr(&liststart, sp, sep);
assert(sp - string <= strlen(string));
if (*sp)
{
assert(*sp == sep && (sp == string || sp[-1] != '\\'));
sp++;
}
}
RlistReverse(&liststart);
return liststart;
}
/**
* Splits the given string into lines. On Windows, both \n and \r\n newlines are
* detected. Escaped newlines are respected/ignored too.
*
* @param detect_crlf whether to try to detect and respect "\r\n" line endings
* @return: an #Rlist where items are the individual lines **without** the
* trailing newline character(s)
* @note: Free the result with RlistDestroy()
* @warning: This function doesn't work properly if @string uses "\r\n" newlines
* and contains '\r' characters that are not part of any "\r\n"
* sequence because it first splits @string on '\r'.
*/
Rlist *RlistFromStringSplitLines(const char *string, bool detect_crlf)
{
if (string == NULL || string[0] == '\0')
{
return NULL;
}
if (!detect_crlf || (strstr(string, "\r\n") == NULL))
{
return RlistFromSplitString(string, '\n');
}
/* else we split on '\r' just like RlistFromSplitString() above, but
* strip leading '\n' in every chunk, thus effectively split on \r\n. See
* the warning in the function's documentation.*/
Rlist *liststart = NULL;
for (const char *sp = string; *sp != '\0';)
{
sp += SubStrnCopyChr(&liststart, sp, '\r', '\n');
assert(sp - string <= strlen(string));
if (*sp)
{
assert(*sp == '\r' && (sp == string || sp[-1] != '\\'));
sp++;
}
}
RlistReverse(&liststart);
return liststart;
}
