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/*
* storycode.c
*
* Colloquium - A tiny presentation program
*
* Copyright (c) 2012 Thomas White <taw@bitwiz.org.uk>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include "storycode.h"
#include "presentation.h"
struct _scblocklist
{
int n_blocks;
char **blocks;
int max_blocks;
};
struct _scblocklistiterator
{
int pos;
};
static int allocate_blocks(SCBlockList *bl)
{
char **blocks_new;
blocks_new = realloc(bl->blocks, bl->max_blocks*sizeof(char *));
if ( blocks_new == NULL ) {
return 1;
}
bl->blocks = blocks_new;
return 0;
}
SCBlockList *sc_block_list_new()
{
SCBlockList *bl;
bl = calloc(1, sizeof(SCBlockList));
if ( bl == NULL ) return NULL;
bl->n_blocks = 0;
bl->max_blocks = 64;
bl->blocks = NULL;
if ( allocate_blocks(bl) ) {
free(bl);
return NULL;
}
return bl;
}
void sc_block_list_free(SCBlockList *bl)
{
int i;
for ( i=0; i<bl->n_blocks; i++ ) {
free(bl->blocks[i]);
}
free(bl->blocks);
free(bl);
}
char *sc_block_list_first(SCBlockList *bl, SCBlockListIterator **piter)
{
SCBlockListIterator *iter;
if ( bl->n_blocks == 0 ) return NULL;
iter = calloc(1, sizeof(SCBlockListIterator));
if ( iter == NULL ) return NULL;
iter->pos = 0;
*piter = iter;
return bl->blocks[0];
}
char *sc_block_list_next(SCBlockList *bl, SCBlockListIterator *iter)
{
iter->pos++;
if ( iter->pos == bl->n_blocks ) {
free(iter);
return NULL;
}
return bl->blocks[iter->pos];
}
static int sc_block_list_add(SCBlockList *bl, char *text)
{
if ( bl->n_blocks == bl->max_blocks ) {
bl->max_blocks += 64;
if ( allocate_blocks(bl) ) return 1;
}
bl->blocks[bl->n_blocks] = text;
bl->n_blocks++;
return 0;
}
SCBlockList *sc_find_blocks(const char *sc, const char *blockname)
{
SCBlockList *bl;
const char *pos;
char label[1024];
bl = sc_block_list_new();
if ( bl == NULL ) return NULL;
if ( strlen(blockname) > 1021 ) {
fprintf(stderr, "Block name '%s' too long.\n", blockname);
return NULL;
}
strcat(label, "\\");
strcat(label, blockname);
strcat(label, "{");
pos = sc;
do {
pos = strstr(pos, label);
if ( pos != NULL ) {
int i;
int bct = 1;
int found = 0;
int ml = strlen(pos);
pos += strlen(label);
for ( i=0; i<ml; i++ ) {
if ( pos[i] == '{' ) {
bct++;
} else if ( pos[i] == '}' ) {
bct--;
}
if ( bct == 0 ) {
found = 1;
break;
}
}
if ( (!found) || (bct != 0) ) {
fprintf(stderr, "Parse error while looking for"
" block '%s'\n", blockname);
sc_block_list_free(bl);
return NULL;
}
if ( sc_block_list_add(bl, strndup(pos, i)) ) {
fprintf(stderr, "Failed to add block.\n");
sc_block_list_free(bl);
return NULL;
}
pos += i+1;
printf("Remaining text '%s'\n", pos);
}
} while ( pos != NULL );
return bl;
}
/* Unpack level 2 StoryCode (content + subframes) into frames */
struct frame *sc_unpack(const char *sc)
{
struct frame *fr;
fr = calloc(1, sizeof(struct frame));
if ( fr == NULL ) return NULL;
return fr;
}
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