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/*
* C TemplateS : template expander
* Based on the original libctemplate by Stephen C. Losen
*
* Version 0.1
*
* Copyright (c) 2017-2019 Alexander M. Pickering (alex@cogarr.net)
*
* Distributed under GPL V3, see COPYING for more information.
* Forked from C Template Library 1.0 by Stephen C. Losen.
*
* Copyright 2017 Alexander M. Pickering Distributed under the terms
* of the GNU General Public License (GPL)
*/
#ifndef _CTEMPLATE_H
#define _CTEMPLATE_H
#include "fbuf.h"
#include "kmp.h"
#include "hashmap.h"
#include "lexer.h"
#define MAX_TEMPLATE_LENGTH 2147384647
/*
typedef struct TMPL_varlist TMPL_varlist;
typedef struct TMPL_loop TMPL_loop;
typedef struct TMPL_fmtlist TMPL_fmtlist;
typedef struct TMPL_fmtlists TMPL_fmtlists;
*/
#define ERRBUF_HINTLEN 50
//I guess it counts the backslash?
#define ATTRIBUTE_VARNAME_LENGTH SIZEOF(ATTRIBUTE_VARNAME) - 1
#define ATTRIBUTE_DEFAULT_LENGTH SIZEOF(ATTRIBUTE_DEFAULT) - 1
#define ATTRIBUTE_VALUE_LENGTH SIZEOF(ATTRIBUTE_VALUE) - 1
#define ATTRIBUTE_LEVEL_LENGTH SIZEOF(ATTRIBUTE_LEVEL) - 1
//Define to 0 for slight speedup improvements, no errors
#define DEBUGGING 1
//Length of error messages
#define ERR_MSG_LEN 500
struct TMPL_light_string{
const char* start;
size_t len;
};
enum TMPL_vartype{
vartype_null = 0,
vartype_loop,
vartype_var
};
struct TMPL_varlist TMPL_varlist;
struct TMPL_loop TMPL_loop;
struct TMPL_varlist{
map_t map;
struct TMPL_loop* parent;
}TMPL_varlist;
struct TMPL_loop{
struct TMPL_varlist* varlist;
struct TMPL_varlist* parent;
size_t loop_len;
struct TMPL_loop* next;
struct TMPL_loop* tail;
}TMPL_loop;
struct TMPL_varitem{
enum TMPL_vartype type;
union {
struct TMPL_loop* l;
char* s;
}item;
};
/*Holds all the data needed for a single node in a template*/
struct TMPL_tagnode{
enum TMPL_tagtype type;
struct TMPL_tagnode* next;
struct TMPL_tagnode* parent;
unsigned int line;
unsigned int character;
union{
/*Text*/
struct{
const char* start;
size_t len;
}text;
/*Var*/
struct{
char* varname;
size_t name_len;
char* defaultval;
size_t default_len;
}var;
/*If, elseif*/
struct{
char* varname;
char* testval;
struct TMPL_tagnode* tbranch;
struct TMPL_tagnode* fbranch;
}ifelse;
/*Loop*/
struct{
char* loopname;
struct TMPL_tagnode* body;
}loop;
/*Break and Continue*/
struct{
int level;//Just use next as the next value
struct TMPL_tagnode* into;
}breakcont;
}TMPL_tag;
}TMPL_tagnode;
//typedef void (*TMPL_fmtfuncs) (const char*, struct TMPL_buf*);
/*
* TMPL_fmtlist is a list of format functions, which are passed to
* a template. A TMPL_VAR tag can specify a format function for
* outputting the variable with the fmt="fmtname" attribute.
*/
struct TMPL_fmtlist{
struct TMPL_fmtlist* next;
void* fmtfunc;
char* name;
} TMPL_fmtlist;
/* Holdes all the data needed for a template*/
struct TMPL_templates{
struct TMPL_buf* out;
struct TMPL_buf* errout;
struct TMPL_tagnode* roottag;
struct TMPL_tagnode* cursor;
int jumping; //tells other functions that they should not change
//the cursor, set after a break or continue.
int breaks;
int continues;
int linenum;
int error;
} TMPL_templates;
int TMPL_add_var_to_varlist(struct TMPL_varlist* vl, const char* name, const char* value);
int TMPL_add_loop_to_varlist(struct TMPL_varlist* vl, const char* name, struct TMPL_loop* loop);
int TMPL_add_varlist_to_loop(struct TMPL_loop* l, struct TMPL_varlist* vl);
struct TMPL_varlist* TMPL_alloc_varlist(void);
void TMPL_free_varlist(struct TMPL_varlist* t);
struct TMPL_varitem* TMPL_alloc_varitem(void);
void TMPL_free_varitem(struct TMPL_varitem* vi);
int TMPL_alloc_template(const char* tmplstr, struct TMPL_templates **t);
void TMPL_free_template(struct TMPL_templates* t);
struct TMPL_loop* TMPL_alloc_loop(void);
void TMPL_free_loop(struct TMPL_loop* tl);
char* TMPL_render(struct TMPL_templates* t, struct TMPL_varlist* varlist, size_t* size_p);
const char* TMPL_err(struct TMPL_templates* t, size_t* size);
struct TMPL_tagnode* TMPL_alloc_tagnode(enum TMPL_tagtype);
void TMPL_free_tagnode(struct TMPL_tagnode* tn);
/*A debug function*/
void print_varlist(struct TMPL_varlist* vl);
void print_ast(struct TMPL_templates* root);
#endif
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