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#include <ctype.h>
#include <err.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#define DEFMAX 300
struct ref {
char *a;
char *y;
char *t;
char *q;
char *d;
char *c;
char *p;
char *w;
};
char format_extra[DEFMAX+1];
char format_full[DEFMAX+1];
char format_list[DEFMAX+1];
int refs_s;
struct ref *refs;
void record(char *dest) {
char c;
int i;
i = 0;
while (read(STDIN_FILENO, &c, 1) != 0 && isspace(c))
;
while (read(STDIN_FILENO, &c, 1) != 0)
dest[i++] = c;
dest[i] = '\0';
}
int main() {
char c, *buf, last[4];
int i, buf_s, ref_i;
buf_s = 200;
buf = malloc((buf_s+1) * sizeof(char));
if (buf == NULL) err(1, "malloc");
#define reset(n) do { \
strncpy(last, " ", 4); \
i =- n; \
buf[i] = '\0'; \
} while (0)
i = 0;
ref_i = -1;
next:
while (read(STDIN_FILENO, &c, 1) != 0) {
if (strncmp(last, "\n.F", 3) != 0)
goto ref;
/* record format def */
switch (last[4]) {
case 'f':
record(format_full);
break;
case 'x':
record(format_extra);
break;
case 'l':
record(format_list);
break;
default:
goto add;
}
reset(3);
goto next;
ref:
if (strncmp(last, "\n.R", 3) != 0)
goto add;
/* record reference def */
switch(last[4]) {
case 'a':
reset(3);
if (ref_i+1 > refs_s) {
refs_s += 10;
refs = realloc(refs, refs_s*sizeof(struct ref));
if (refs == NULL) err(1, "realloc");
}
ref_i++;
refs[ref_i].a = malloc((DEFMAX+1) * sizeof(char));
if (refs[ref_i].a == NULL) err(1, "malloc");
record(refs[ref_i].a);
break;
case 'y':
break;
default:
goto add;
}
reset(3);
goto next;
add:
/* add to buffer */
if (i+1 > buf_s) {
buf_s += 100;
buf = realloc(buf, (buf_s+1) * sizeof(char));
if (buf == NULL) err(1, "realloc");
}
buf[i++] = c;
/* keep track of last 4 characters */
if (i <= 4) last[i] = c;
else {
memmove(last, last+1, 3);
last[3] = c;
}
}
}
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