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#ifndef BUTTRESS_BUTTRESS_H
#define BUTTRESS_BUTTRESS_H
#ifdef __GNUC__
#define NORETURN __attribute__((__noreturn__))
#endif
#ifndef TRUE
#define TRUE 1
#endif
#ifndef FALSE
#define FALSE 0
#endif
/*
* Structure tags
*/
typedef struct input_Tag input;
typedef struct paragraph_Tag paragraph;
typedef struct word_Tag word;
/*
* Data structure to hold all the file names etc for input
*/
#define INPUT_PUSHBACK_MAX 16
struct input_Tag {
char **filenames; /* complete list of input files */
int nfiles; /* how many in the list */
FILE *currfp; /* the currently open one */
int currindex; /* which one is that in the list */
char pushback[INPUT_PUSHBACK_MAX]; /* pushed-back input characters */
int npushback;
};
/*
* Data structure to hold the input form of the source, ie a linked
* list of paragraphs
*/
struct paragraph_Tag {
paragraph *next;
int type;
char *keyword; /* for IR, IA, and heading paras */
word *words; /* list of words in paragraph */
} paragraph;
enum {
para_IA, /* index alias */
para_IR, /* index rewrite */
para_Chapter,
para_Appendix,
para_Heading,
para_Subsect,
para_Normal,
para_Bullet,
para_Code
};
/*
* Data structure to hold an individual word
*/
struct word_Tag {
word *next;
int type;
char *text;
}
enum {
word_Normal,
word_Emph,
word_Code,
word_IndexRef /* always invisible */
}
/*
* error.c
*/
void fatal(int code, ...) NORETURN;
void error(int code, ...);
enum {
err_nomemory, /* out of memory */
err_optnoarg, /* option `-%s' requires an argument */
err_nosuchopt, /* unrecognised option `-%s' */
err_noinput, /* no input files */
};
/*
* malloc.c
*/
void *smalloc(int size);
void *srealloc(void *p, int size);
void sfree(void *p);
/*
* help.c
*/
void help(void);
void usage(void);
void showversion(void);
/*
* licence.c
*/
void licence(void);
/*
* version.c
*/
const char *const version;
/*
* input.c
*/
paragraph *read_input(input *in);
#endif
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