Rlist *RlistCopy(const Rlist *rp)
{
return RlistCopyRewriter(rp, NULL);
}
FnCall *FnCallCopyRewriter(const FnCall *f, JsonElement *map)
{
return FnCallNew(f->name, RlistCopyRewriter(f->args, map));
}
Rval RvalNewRewriter(const void *item, RvalType type, JsonElement *map)
{
switch (type)
{
case RVAL_TYPE_SCALAR:
if (NULL != map && JsonLength(map) > 0 && // do we have a rewrite map?
(strstr(item, "$(") || strstr(item, "${"))) // are there unresolved variable references?
{
// TODO: replace with BufferSearchAndReplace when the
// string_replace code is merged.
// Sorry about the CF_BUFSIZE ugliness.
int max_size = 10*CF_BUFSIZE+1;
char *buffer_from = xmalloc(max_size);
char *buffer_to = xmalloc(max_size);
Buffer *format = BufferNew();
strncpy(buffer_from, item, max_size);
for (int iteration = 0; iteration < 10; iteration++)
{
bool replacement_made = false;
int var_start = -1;
char closing_brace = 0;
for (int c = 0; c < buffer_from[c]; c++)
{
printf("In %s at %i: '%s'\n", __func__, __LINE__, buffer_from);
if (buffer_from[c] == '$')
{
if (buffer_from[c+1] == '(')
{
closing_brace = ')';
}
else if (buffer_from[c+1] == '{')
{
closing_brace = '}';
}
if (closing_brace)
{
c++;
var_start = c-1;
}
}
else if (var_start >= 0 && buffer_from[c] == closing_brace)
{
char saved = buffer_from[c];
buffer_from[c] = '\0';
const char *repl = JsonObjectGetAsString(map, buffer_from + var_start + 2);
buffer_from[c] = saved;
if (repl)
{
// Before the replacement.
memcpy(buffer_to, buffer_from, var_start);
// The actual replacement.
int repl_len = strlen(repl);
memcpy(buffer_to + var_start, repl, repl_len);
// The text after.
strlcpy(buffer_to + var_start + repl_len, buffer_from + c + 1, max_size - var_start - repl_len);
// Reset location to immediately after the replacement.
c = var_start + repl_len - 1;
var_start = -1;
strcpy(buffer_from, buffer_to);
closing_brace = 0;
replacement_made = true;
}
}
}
if (!replacement_made)
{
break;
}
}
char *ret = xstrdup(buffer_to);
BufferDestroy(format);
free(buffer_to);
free(buffer_from);
return (Rval) { ret, RVAL_TYPE_SCALAR };
}
else
{
return (Rval) { xstrdup(item), RVAL_TYPE_SCALAR };
}
case RVAL_TYPE_FNCALL:
return (Rval) { FnCallCopyRewriter(item, map), RVAL_TYPE_FNCALL };
case RVAL_TYPE_LIST:
return (Rval) { RlistCopyRewriter(item, map), RVAL_TYPE_LIST };
case RVAL_TYPE_CONTAINER:
return (Rval) { JsonCopy(item), RVAL_TYPE_CONTAINER };
case RVAL_TYPE_NOPROMISEE:
return ((Rval) {NULL, type});
}
assert(false);
return ((Rval) { NULL, RVAL_TYPE_NOPROMISEE });
}
/* Inserts an Rlist node with value #rval, right after the rlist node #node. */
void RlistInsertAfter(Rlist *node, Rval rval)
{
assert(node != NULL);
Rlist new_node = { .val = rval,
.next = node->next };
node->next = xmemdup(&new_node, sizeof(new_node));
}
Rval RvalNewRewriter(const void *item, RvalType type, JsonElement *map)
{
switch (type)
{
case RVAL_TYPE_SCALAR:
if (map != NULL && JsonLength(map) > 0 && // do we have a rewrite map?
(strstr(item, "$(") || strstr(item, "${"))) // are there unresolved variable references?
{
// TODO: replace with BufferSearchAndReplace when the
// string_replace code is merged.
// Sorry about the CF_BUFSIZE ugliness.
int max_size = 10*CF_BUFSIZE+1;
char *buffer_from = xmalloc(max_size);
char *buffer_to = xmalloc(max_size);
Buffer *format = BufferNew();
StringCopy(item, buffer_from, max_size);
for (int iteration = 0; iteration < 10; iteration++)
{
bool replacement_made = false;
int var_start = -1;
char closing_brace = 0;
for (int c = 0; c < buffer_from[c]; c++)
{
if (buffer_from[c] == '$')
{
if (buffer_from[c+1] == '(')
{
closing_brace = ')';
}
else if (buffer_from[c+1] == '{')
{
closing_brace = '}';
}
if (closing_brace)
{
c++;
var_start = c-1;
}
}
else if (var_start >= 0 && buffer_from[c] == closing_brace)
{
char saved = buffer_from[c];
buffer_from[c] = '\0';
const char *repl = JsonObjectGetAsString(map, buffer_from + var_start + 2);
buffer_from[c] = saved;
if (repl)
{
// Before the replacement.
memcpy(buffer_to, buffer_from, var_start);
// The actual replacement.
int repl_len = strlen(repl);
memcpy(buffer_to + var_start, repl, repl_len);
// The text after.
strlcpy(buffer_to + var_start + repl_len, buffer_from + c + 1, max_size - var_start - repl_len);
// Reset location to immediately after the replacement.
c = var_start + repl_len - 1;
var_start = -1;
StringCopy(buffer_to, buffer_from, max_size);
closing_brace = 0;
replacement_made = true;
}
}
}
if (!replacement_made)
{
break;
}
}
char *ret = xstrdup(buffer_to);
BufferDestroy(format);
free(buffer_to);
free(buffer_from);
return (Rval) { ret, RVAL_TYPE_SCALAR };
}
else
{
return (Rval) { xstrdup(item), RVAL_TYPE_SCALAR };
}
case RVAL_TYPE_FNCALL:
return (Rval) { FnCallCopyRewriter(item, map), RVAL_TYPE_FNCALL };
case RVAL_TYPE_LIST:
return (Rval) { RlistCopyRewriter(item, map), RVAL_TYPE_LIST };
case RVAL_TYPE_CONTAINER:
return (Rval) { JsonCopy(item), RVAL_TYPE_CONTAINER };
case RVAL_TYPE_NOPROMISEE:
return ((Rval) {NULL, type});
}
assert(false);
return ((Rval) { NULL, RVAL_TYPE_NOPROMISEE });
}
Rval RvalNew(const void *item, RvalType type)
{
return RvalNewRewriter(item, type, NULL);
}
Rval RvalCopyRewriter(Rval rval, JsonElement *map)
{
return RvalNewRewriter(rval.item, rval.type, map);
}
Rval RvalCopy(Rval rval)
{
return RvalNew(rval.item, rval.type);
}
/*******************************************************************/
Rlist *RlistCopyRewriter(const Rlist *rp, JsonElement *map)
{
Rlist *start = NULL;
while (rp != NULL)
{
RlistAppendRval(&start, RvalCopyRewriter(rp->val, map));
rp = rp->next;
}
return start;
}
