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#include <err.h>
#include <stdarg.h>
#define MAX 255
#define AND "och"
#define AVAIL "Tillgänglig: "
#define ED "red."
#define PP "ss."
#define TR "Övers."
#define VOL "vol."
void field(char *);
void entry(void);
int pf(char *, ...);
char *name;
struct entry {
int a; /* Number of authors. */
char au[MAX][MAX];
char ad[MAX];
char al[MAX];
char bo[MAX];
char ci[MAX];
char da[MAX];
char ed[MAX];
char jo[MAX];
char no[MAX]; /* TODO */
char pp[MAX];
char pu[MAX];
char se[MAX]; /* TODO */
char ti[MAX];
char tr[MAX];
char vo[MAX];
char QQ[MAX];
} e;
%s ENTRY
%%
^%.*\n field(yytext); BEGIN(ENTRY);
<ENTRY>^[^%] entry(); ECHO; BEGIN(0);
<ENTRY><<EOF>> entry(); yyterminate();
%%
void
main(int argc, char *argv[0])
{
name = argv[0];
e.a = 0;
yylex();
}
/* Save entry field. */
void
field(char *t)
{
#define AS(a,b) if(strncmp(t, a, 2) == 0 && (t += 3)){ strcpy(b, t); return; }
t++;
t[strcspn(t, "\n")] = 0;
AS("au",e.au[e.a++]);
AS("ad",e.ad);
AS("al",e.al);
AS("bo",e.bo);
AS("ci",e.ci);
AS("da",e.da);
AS("ed",e.ed);
AS("jo",e.jo);
AS("no",e.no);
AS("pp",e.pp);
AS("pu",e.pu);
AS("se",e.se);
AS("ti",e.ti);
AS("tr",e.tr);
AS("vo",e.vo);
AS("??",e.QQ);
fprintf(stderr, "%s: unrecognized field %%%.2s\n", name, t);
exit(1);
}
/* Print formatted entry. */
void
entry()
{
int i;
#define EI(a, b) a ? a : b
/* Print authors. */
for(i = 0; i < e.a-2; i++)
printf("%s, ", e.au[i]);
if(i == e.a-2)
printf("%s "AND" ", e.au[i++]);
if(i == e.a-1)
printf("%s", e.au[i]);
/* Print date. */
(pf(" (%).\n", e.da) || (e.a ? pf(".\n") : 0));
/* Print title, book/journal. */
if(*e.bo || *e.jo){
pf("%.\n", e.ti);
pf("\\fI%\\fP", EI(e.bo, e.jo));
pf(" ("ED" %)", e.ed);
}else
pf("\\fI%\\fP", e.ti);
/* Print volume, pages. */
pf(", "VOL" %", e.vo);
pf(", "PP" %", e.pp);
pf(".\n");
/* Print translator. */
pf(TR" %.\n", e.tr);
/* Print city, publisher. */
(pf("%: %.\n", e.ci, e.pu) || pf("%.\n", e.pu));
/* Print other information. */
pf("%.\n", e.QQ);
/* Print internet address. */
pf(AVAIL"%\n", e.ad);
#define CL(a) *a = 0
e.a = 0;
CL(e.ad);
CL(e.al);
CL(e.bo);
CL(e.ci);
CL(e.da);
CL(e.ed);
CL(e.jo);
CL(e.no);
CL(e.pp);
CL(e.pu);
CL(e.se);
CL(e.ti);
CL(e.tr);
CL(e.vo);
CL(e.QQ);
}
/* Print formatted text if given strings are non-empty. */
int
pf(char *fmt, ...)
{
char *buf, *p;
int n;
va_list ap;
n = 0;
for(p = fmt; *p; p++)
if(*p == '%')
n++;
if(!(buf = malloc(strlen(fmt)+n*MAX+1)))
err(1, "malloc");
va_start(ap, fmt);
for(; *fmt; fmt++)
switch(*fmt){
case '%':
p = va_arg(ap, char *);
if(!p || !*p)
return 0;
strcat(buf, p);
break;
default:
strncat(buf, fmt, 1);
}
printf("%s", buf);
va_end(ap);
return 1;
}
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