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-rw-r--r--src/renderer.c457
1 files changed, 0 insertions, 457 deletions
diff --git a/src/renderer.c b/src/renderer.c
deleted file mode 100644
index 27e92bd..0000000
--- a/src/renderer.c
+++ /dev/null
@@ -1,457 +0,0 @@
-/*
- * blogc: A blog compiler.
- * Copyright (C) 2015-2016 Rafael G. Martins <rafael@rafaelmartins.eng.br>
- *
- * This program can be distributed under the terms of the BSD License.
- * See the file LICENSE.
- */
-
-#include <errno.h>
-#include <stdbool.h>
-#include <stddef.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include "datetime-parser.h"
-#include "error.h"
-#include "template-parser.h"
-#include "renderer.h"
-#include "utils.h"
-
-
-const char*
-blogc_get_variable(const char *name, sb_trie_t *global, sb_trie_t *local)
-{
- const char *rv = NULL;
- if (local != NULL) {
- rv = sb_trie_lookup(local, name);
- if (rv != NULL)
- return rv;
- }
- if (global != NULL)
- rv = sb_trie_lookup(global, name);
- return rv;
-}
-
-
-char*
-blogc_format_date(const char *date, sb_trie_t *global, sb_trie_t *local)
-{
- const char *date_format = blogc_get_variable("DATE_FORMAT", global, local);
- if (date == NULL)
- return NULL;
- if (date_format == NULL)
- return sb_strdup(date);
-
- blogc_error_t *err = NULL;
- char *rv = blogc_convert_datetime(date, date_format, &err);
- if (err != NULL) {
- blogc_error_print(err);
- blogc_error_free(err);
- return sb_strdup(date);
- }
- return rv;
-}
-
-
-char*
-blogc_format_variable(const char *name, sb_trie_t *global, sb_trie_t *local,
- sb_slist_t *foreach_var)
-{
- // if used asked for a variable that exists, just return it right away
- const char *value = blogc_get_variable(name, global, local);
- if (value != NULL)
- return sb_strdup(value);
-
- // do the same for special variable 'FOREACH_ITEM'
- if (0 == strcmp(name, "FOREACH_ITEM")) {
- if (foreach_var != NULL && foreach_var->data != NULL) {
- return sb_strdup(foreach_var->data);
- }
- return NULL;
- }
-
- char *var = sb_strdup(name);
-
- size_t i;
- size_t last = strlen(var);
-
- long int len = -1;
-
- // just walk till the last '_'
- for (i = last - 1; i > 0 && var[i] >= '0' && var[i] <= '9'; i--);
-
- if (var[i] == '_' && (i + 1) < last) { // var ends with '_[0-9]+'
- // passing NULL to endptr because our string was previously validated
- len = strtol(var + i + 1, NULL, 10);
- if (errno != 0) {
- fprintf(stderr, "warning: invalid variable size for '%s' (%s), "
- "ignoring.\n", var, strerror(errno));
- len = -1;
- }
- else {
- var[i] = '\0';
- }
- }
-
- bool must_format = false;
-
- if (sb_str_ends_with(var, "_FORMATTED")) {
- var[strlen(var) - 10] = '\0';
- must_format = true;
- }
-
- if ((0 == strcmp(var, "FOREACH_ITEM")) &&
- (foreach_var != NULL && foreach_var->data != NULL))
- value = foreach_var->data;
- else
- value = blogc_get_variable(var, global, local);
-
- if (value == NULL) {
- free(var);
- return NULL;
- }
-
- char *rv = NULL;
-
- if (must_format) {
- if (sb_str_starts_with(name, "DATE_")) {
- rv = blogc_format_date(value, global, local);
- }
- else {
- fprintf(stderr, "warning: no formatter found for '%s', "
- "ignoring.\n", var);
- rv = sb_strdup(value);
- }
- }
- else {
- rv = sb_strdup(value);
- }
-
- free(var);
-
- if (len > 0) {
- char *tmp = sb_strndup(rv, len);
- free(rv);
- rv = tmp;
- }
-
- return rv;
-}
-
-
-sb_slist_t*
-blogc_split_list_variable(const char *name, sb_trie_t *global, sb_trie_t *local)
-{
- const char *value = blogc_get_variable(name, global, local);
- if (value == NULL)
- return NULL;
-
- sb_slist_t *rv = NULL;
-
- char **tmp = sb_str_split(value, ' ', 0);
- for (unsigned int i = 0; tmp[i] != NULL; i++) {
- if (tmp[i][0] != '\0') // ignore empty strings
- rv = sb_slist_append(rv, tmp[i]);
- else
- free(tmp[i]);
- }
- free(tmp);
-
- return rv;
-}
-
-
-char*
-blogc_render(sb_slist_t *tmpl, sb_slist_t *sources, sb_trie_t *config, bool listing)
-{
- if (tmpl == NULL)
- return NULL;
-
- sb_slist_t *current_source = NULL;
- sb_slist_t *listing_start = NULL;
-
- sb_string_t *str = sb_string_new();
-
- sb_trie_t *tmp_source = NULL;
- char *config_value = NULL;
- char *defined = NULL;
-
- unsigned int if_count = 0;
-
- sb_slist_t *foreach_var = NULL;
- sb_slist_t *foreach_var_start = NULL;
- sb_slist_t *foreach_start = NULL;
-
- bool if_not = false;
- bool inside_block = false;
- bool evaluate = false;
- bool valid_else = false;
-
- int cmp = 0;
-
- sb_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)
- sb_string_append(str, stmt->value);
- break;
-
- case BLOGC_TEMPLATE_BLOCK_STMT:
- inside_block = true;
- if_count = 0;
- if (0 == strcmp("entry", stmt->value)) {
- if (listing) {
-
- // 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("listing", stmt->value)) ||
- (0 == strcmp("listing_once", stmt->value))) {
- if (!listing) {
-
- // 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("listing", stmt->value)) {
- if (sources == NULL) {
-
- // 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 (current_source == NULL) {
- listing_start = tmp;
- current_source = sources;
- }
- tmp_source = current_source->data;
- }
- break;
-
- case BLOGC_TEMPLATE_VARIABLE_STMT:
- if (stmt->value != NULL) {
- config_value = blogc_format_variable(stmt->value,
- config, inside_block ? tmp_source : NULL, foreach_var);
- if (config_value != NULL) {
- sb_string_append(str, config_value);
- free(config_value);
- config_value = NULL;
- break;
- }
- }
- break;
-
- case BLOGC_TEMPLATE_ENDBLOCK_STMT:
- inside_block = false;
- if (listing_start != NULL && current_source != NULL) {
- current_source = current_source->next;
- if (current_source != NULL) {
- tmp = listing_start;
- continue;
- }
- else
- listing_start = NULL;
- }
- break;
-
- case BLOGC_TEMPLATE_IFNDEF_STMT:
- if_not = true;
-
- case BLOGC_TEMPLATE_IF_STMT:
- case BLOGC_TEMPLATE_IFDEF_STMT:
- if_count = 0;
- defined = NULL;
- if (stmt->value != NULL)
- defined = blogc_format_variable(stmt->value, config,
- inside_block ? tmp_source : NULL, foreach_var);
- evaluate = false;
- if (stmt->op != 0) {
- // Strings that start with a '"' are actually strings, the
- // others are meant to be looked up as a second variable
- // check.
- char *defined2 = NULL;
- if (stmt->value2 != NULL) {
- if ((strlen(stmt->value2) >= 2) &&
- (stmt->value2[0] == '"') &&
- (stmt->value2[strlen(stmt->value2) - 1] == '"'))
- {
- defined2 = sb_strndup(stmt->value2 + 1,
- strlen(stmt->value2) - 2);
- }
- else {
- defined2 = blogc_format_variable(stmt->value2,
- config, inside_block ? tmp_source : NULL,
- foreach_var);
- }
- }
-
- if (defined != NULL && defined2 != NULL) {
- cmp = strcmp(defined, defined2);
- if (cmp != 0 && stmt->op & BLOGC_TEMPLATE_OP_NEQ)
- evaluate = true;
- else if (cmp == 0 && stmt->op & BLOGC_TEMPLATE_OP_EQ)
- evaluate = true;
- else if (cmp < 0 && stmt->op & BLOGC_TEMPLATE_OP_LT)
- evaluate = true;
- else if (cmp > 0 && stmt->op & BLOGC_TEMPLATE_OP_GT)
- evaluate = true;
- }
-
- free(defined2);
- }
- else {
- if (if_not && defined == NULL)
- evaluate = true;
- if (!if_not && defined != NULL)
- evaluate = true;
- }
- if (!evaluate) {
-
- // 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) ||
- (stmt->type == BLOGC_TEMPLATE_IFDEF_STMT) ||
- (stmt->type == BLOGC_TEMPLATE_IFNDEF_STMT))
- {
- if_count++;
- continue;
- }
- if ((stmt->type == BLOGC_TEMPLATE_ELSE_STMT) &&
- (if_count == 0))
- {
- // this is somewhat complex. only an else statement
- // right after a non evaluated block should be considered
- // valid, because all the inner conditionals were just
- // skipped, and all the outter conditionals evaluated
- // to true.
- valid_else = true;
- break;
- }
- if (stmt->type == BLOGC_TEMPLATE_ENDIF_STMT) {
- if (if_count > 0) {
- if_count--;
- continue;
- }
- break;
- }
- }
- }
- free(defined);
- defined = NULL;
- if_not = false;
- break;
-
- case BLOGC_TEMPLATE_ELSE_STMT:
- if_count = 0;
- if (!valid_else) {
-
- // 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) ||
- (stmt->type == BLOGC_TEMPLATE_IFDEF_STMT) ||
- (stmt->type == BLOGC_TEMPLATE_IFNDEF_STMT))
- {
- if_count++;
- continue;
- }
- // no need to handle else statements here, because every
- // if should have an endif.
- if (stmt->type == BLOGC_TEMPLATE_ENDIF_STMT) {
- if (if_count > 0) {
- if_count--;
- continue;
- }
- break;
- }
- }
- }
- valid_else = false;
- break;
-
- case BLOGC_TEMPLATE_ENDIF_STMT:
- // any endif statement should invalidate valid_else, to avoid
- // propagation to outter conditionals.
- valid_else = false;
- if (if_count > 0)
- if_count--;
- break;
-
- case BLOGC_TEMPLATE_FOREACH_STMT:
- if (foreach_var_start == NULL) {
- if (stmt->value != NULL)
- foreach_var_start = blogc_split_list_variable(stmt->value,
- config, inside_block ? tmp_source : NULL);
-
- if (foreach_var_start != NULL) {
- foreach_var = foreach_var_start;
- foreach_start = tmp;
- }
- else {
-
- // we can just skip anything and walk until the next
- // 'endforeach'
- while (stmt->type != BLOGC_TEMPLATE_ENDFOREACH_STMT) {
- tmp = tmp->next;
- stmt = tmp->data;
- }
- break;
- }
- }
-
- if (foreach_var == NULL) {
- foreach_start = tmp;
- foreach_var = foreach_var_start;
- }
- break;
-
- case BLOGC_TEMPLATE_ENDFOREACH_STMT:
- if (foreach_start != NULL && foreach_var != NULL) {
- foreach_var = foreach_var->next;
- if (foreach_var != NULL) {
- tmp = foreach_start;
- continue;
- }
- }
- foreach_start = NULL;
- sb_slist_free_full(foreach_var_start, free);
- foreach_var_start = NULL;
- break;
- }
- tmp = tmp->next;
- }
-
- // no need to free temporary variables here. the template parser makes sure
- // that templates are sane and statements are closed.
-
- return sb_string_free(str, false);
-}
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