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/*
* blogc: A blog compiler.
* Copyright (C) 2015 Rafael G. Martins <rafael@rafaelmartins.eng.br>
*
* This program can be distributed under the terms of the BSD License.
* See the file COPYING.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif /* HAVE_CONFIG_H */
#include <string.h>
#include "utils/utils.h"
#include "source-parser.h"
#include "template-parser.h"
#include "renderer.h"
char*
blogc_render(b_slist_t *tmpl, b_slist_t *sources)
{
if (tmpl == NULL || sources == NULL)
return NULL;
bool single_source = sources->next == NULL;
b_slist_t *current_source = NULL;
b_slist_t *multiple_sources_start = NULL;
b_string_t *str = b_string_new();
b_trie_t *tmp_source = NULL;
char *config_value = NULL;
unsigned int if_count = 0;
unsigned int if_skip = 0;
b_slist_t *tmp = tmpl;
while (tmp != NULL) {
blogc_template_stmt_t *stmt = tmp->data;
switch (stmt->type) {
case BLOGC_TEMPLATE_CONTENT_STMT:
if (stmt->value != NULL)
b_string_append(str, stmt->value);
break;
case BLOGC_TEMPLATE_BLOCK_STMT:
if_count = 0;
if (0 == strcmp("single_source", stmt->value)) {
if (!single_source) {
// we can just skip anything and walk until the next
// 'endblock'
while (stmt->type != BLOGC_TEMPLATE_ENDBLOCK_STMT) {
tmp = tmp->next;
stmt = tmp->data;
}
break;
}
current_source = sources;
tmp_source = current_source->data;
}
else if ((0 == strcmp("multiple_sources", stmt->value)) ||
(0 == strcmp("multiple_sources_once", stmt->value))) {
if (single_source) {
// we can just skip anything and walk until the next
// 'endblock'
while (stmt->type != BLOGC_TEMPLATE_ENDBLOCK_STMT) {
tmp = tmp->next;
stmt = tmp->data;
}
break;
}
}
if (0 == strcmp("multiple_sources", stmt->value)) {
if (current_source == NULL) {
multiple_sources_start = tmp;
current_source = sources;
}
tmp_source = current_source->data;
}
break;
case BLOGC_TEMPLATE_VARIABLE_STMT:
if (stmt->value != NULL && tmp_source != NULL) {
config_value = b_trie_lookup(tmp_source, stmt->value);
if (config_value != NULL)
b_string_append(str, config_value);
break;
}
break;
case BLOGC_TEMPLATE_ENDBLOCK_STMT:
if (multiple_sources_start != NULL && current_source != NULL) {
current_source = current_source->next;
if (current_source != NULL) {
tmp = multiple_sources_start;
continue;
}
else
multiple_sources_start = NULL;
}
break;
case BLOGC_TEMPLATE_IF_STMT:
if (stmt->value != NULL && tmp_source != NULL) {
if (b_trie_lookup(tmp_source, stmt->value) == NULL) {
if_skip = if_count;
// at this point we can just skip anything, counting the
// number of 'if's, to know how many 'endif's we need to
// skip as well.
while (1) {
tmp = tmp->next;
stmt = tmp->data;
if (stmt->type == BLOGC_TEMPLATE_IF_STMT) {
if_count++;
continue;
}
if (stmt->type == BLOGC_TEMPLATE_ENDIF_STMT) {
if (if_count > if_skip) {
if_count--;
continue;
}
if (if_count == if_skip)
break;
}
}
}
}
break;
case BLOGC_TEMPLATE_ENDIF_STMT:
if_count--;
break;
}
tmp = tmp->next;
}
return b_string_free(str, false);
}
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