1 f08fdedc 2003-11-23 devnull #include "rc.h"
2 f08fdedc 2003-11-23 devnull #include "exec.h"
3 f08fdedc 2003-11-23 devnull #include "io.h"
4 f08fdedc 2003-11-23 devnull #include "fns.h"
5 f08fdedc 2003-11-23 devnull int pfmtnest=0;
6 f08fdedc 2003-11-23 devnull void pfmt(io *f, char *fmt, ...){
7 f08fdedc 2003-11-23 devnull va_list ap;
8 f08fdedc 2003-11-23 devnull char err[ERRMAX];
9 f08fdedc 2003-11-23 devnull va_start(ap, fmt);
10 f08fdedc 2003-11-23 devnull pfmtnest++;
11 f08fdedc 2003-11-23 devnull for(;*fmt;fmt++)
12 f08fdedc 2003-11-23 devnull if(*fmt!='%') pchr(f, *fmt);
13 f08fdedc 2003-11-23 devnull else switch(*++fmt){
14 f08fdedc 2003-11-23 devnull case '\0': va_end(ap); return;
15 f08fdedc 2003-11-23 devnull case 'c': pchr(f, va_arg(ap, int)); break;
16 f08fdedc 2003-11-23 devnull case 'd': pdec(f, va_arg(ap, int)); break;
17 f08fdedc 2003-11-23 devnull case 'o': poct(f, va_arg(ap, unsigned)); break;
18 f08fdedc 2003-11-23 devnull case 'p': phex(f, (long)va_arg(ap, char *)); break; /*unportable*/
19 f08fdedc 2003-11-23 devnull case 'Q': pquo(f, va_arg(ap, char *)); break;
20 f08fdedc 2003-11-23 devnull case 'q': pwrd(f, va_arg(ap, char *)); break;
21 f08fdedc 2003-11-23 devnull case 'r': errstr(err, sizeof err); pstr(f, err); break;
22 f08fdedc 2003-11-23 devnull case 's': pstr(f, va_arg(ap, char *)); break;
23 f08fdedc 2003-11-23 devnull case 't': pcmd(f, va_arg(ap, struct tree *)); break;
24 f08fdedc 2003-11-23 devnull case 'v': pval(f, va_arg(ap, struct word *)); break;
25 f08fdedc 2003-11-23 devnull default: pchr(f, *fmt); break;
27 f08fdedc 2003-11-23 devnull va_end(ap);
28 f08fdedc 2003-11-23 devnull if(--pfmtnest==0) flush(f);
30 f08fdedc 2003-11-23 devnull void pchr(io *b, int c)
32 f08fdedc 2003-11-23 devnull if(b->bufp==b->ebuf) fullbuf(b, c);
33 f08fdedc 2003-11-23 devnull else *b->bufp++=c;
35 f08fdedc 2003-11-23 devnull int rchr(io *b)
37 f08fdedc 2003-11-23 devnull if(b->bufp==b->ebuf) return emptybuf(b);
38 f08fdedc 2003-11-23 devnull return *b->bufp++ & 0xFF;
41 f08fdedc 2003-11-23 devnull void pquo(io *f, char *s)
43 f08fdedc 2003-11-23 devnull pchr(f, '\'');
44 f08fdedc 2003-11-23 devnull for(;*s;s++)
45 f08fdedc 2003-11-23 devnull if(*s=='\'') pfmt(f, "''");
46 f08fdedc 2003-11-23 devnull else pchr(f, *s);
47 f08fdedc 2003-11-23 devnull pchr(f, '\'');
49 f08fdedc 2003-11-23 devnull void pwrd(io *f, char *s)
52 f08fdedc 2003-11-23 devnull for(t=s;*t;t++) if(!wordchr(*t)) break;
53 f08fdedc 2003-11-23 devnull if(t==s || *t) pquo(f, s);
54 f08fdedc 2003-11-23 devnull else pstr(f, s);
56 f08fdedc 2003-11-23 devnull void phex(io *f, long p)
59 f08fdedc 2003-11-23 devnull for(n=28;n>=0;n-=4) pchr(f, "0123456789ABCDEF"[(p>>n)&0xF]);
61 f08fdedc 2003-11-23 devnull void pstr(io *f, char *s)
63 f08fdedc 2003-11-23 devnull if(s==0) s="(null)";
64 f08fdedc 2003-11-23 devnull while(*s) pchr(f, *s++);
66 f08fdedc 2003-11-23 devnull void pdec(io *f, long n)
70 f08fdedc 2003-11-23 devnull if(n>=0){
71 f08fdedc 2003-11-23 devnull pchr(f, '-');
72 f08fdedc 2003-11-23 devnull pdec(f, n);
75 f08fdedc 2003-11-23 devnull /* n is two's complement minimum integer */
77 f08fdedc 2003-11-23 devnull pchr(f, '-');
78 f08fdedc 2003-11-23 devnull pdec(f, n/10);
79 f08fdedc 2003-11-23 devnull pchr(f, n%10+'1');
82 f08fdedc 2003-11-23 devnull if(n>9) pdec(f, n/10);
83 f08fdedc 2003-11-23 devnull pchr(f, n%10+'0');
85 f08fdedc 2003-11-23 devnull void poct(io *f, ulong n)
87 f08fdedc 2003-11-23 devnull if(n>7) poct(f, n>>3);
88 f08fdedc 2003-11-23 devnull pchr(f, (n&7)+'0');
90 f08fdedc 2003-11-23 devnull void pval(io *f, word *a)
93 f08fdedc 2003-11-23 devnull while(a->next && a->next->word){
94 f08fdedc 2003-11-23 devnull pwrd(f, a->word);
95 f08fdedc 2003-11-23 devnull pchr(f, ' ');
96 f08fdedc 2003-11-23 devnull a=a->next;
98 f08fdedc 2003-11-23 devnull pwrd(f, a->word);
101 f08fdedc 2003-11-23 devnull int fullbuf(io *f, int c)
103 f08fdedc 2003-11-23 devnull flush(f);
104 f08fdedc 2003-11-23 devnull return *f->bufp++=c;
106 f08fdedc 2003-11-23 devnull void flush(io *f)
109 f08fdedc 2003-11-23 devnull char *s;
110 f08fdedc 2003-11-23 devnull if(f->strp){
111 f08fdedc 2003-11-23 devnull n=f->ebuf-f->strp;
112 f08fdedc 2003-11-23 devnull f->strp=realloc(f->strp, n+101);
113 f08fdedc 2003-11-23 devnull if(f->strp==0) panic("Can't realloc %d bytes in flush!", n+101);
114 f08fdedc 2003-11-23 devnull f->bufp=f->strp+n;
115 f08fdedc 2003-11-23 devnull f->ebuf=f->bufp+100;
116 f08fdedc 2003-11-23 devnull for(s=f->bufp;s<=f->ebuf;s++) *s='\0';
119 f08fdedc 2003-11-23 devnull n=f->bufp-f->buf;
120 f08fdedc 2003-11-23 devnull if(n && Write(f->fd, f->buf, n) < 0){
121 f08fdedc 2003-11-23 devnull Write(3, "Write error\n", 12);
122 f08fdedc 2003-11-23 devnull if(ntrap) dotrap();
124 f08fdedc 2003-11-23 devnull f->bufp=f->buf;
125 f08fdedc 2003-11-23 devnull f->ebuf=f->buf+NBUF;
128 f08fdedc 2003-11-23 devnull io *openfd(int fd){
130 0b917997 2004-03-04 devnull f=new(struct io);
131 f08fdedc 2003-11-23 devnull f->fd=fd;
132 f08fdedc 2003-11-23 devnull f->bufp=f->ebuf=f->buf;
133 f08fdedc 2003-11-23 devnull f->strp=0;
134 f08fdedc 2003-11-23 devnull return f;
136 f08fdedc 2003-11-23 devnull io *openstr(void){
137 f08fdedc 2003-11-23 devnull io *f=new(struct io);
138 f08fdedc 2003-11-23 devnull char *s;
139 f08fdedc 2003-11-23 devnull f->fd=-1;
140 f08fdedc 2003-11-23 devnull f->bufp=f->strp=emalloc(101);
141 f08fdedc 2003-11-23 devnull f->ebuf=f->bufp+100;
142 f08fdedc 2003-11-23 devnull for(s=f->bufp;s<=f->ebuf;s++) *s='\0';
143 f08fdedc 2003-11-23 devnull return f;
146 f08fdedc 2003-11-23 devnull * Open a corebuffer to read. EOF occurs after reading len
147 f08fdedc 2003-11-23 devnull * characters from buf.
149 f08fdedc 2003-11-23 devnull io *opencore(char *s, int len)
151 f08fdedc 2003-11-23 devnull io *f=new(struct io);
152 f08fdedc 2003-11-23 devnull char *buf=emalloc(len);
153 f08fdedc 2003-11-23 devnull f->fd= -1 /*open("/dev/null", 0)*/;
154 f08fdedc 2003-11-23 devnull f->bufp=f->strp=buf;
155 f08fdedc 2003-11-23 devnull f->ebuf=buf+len;
156 f08fdedc 2003-11-23 devnull Memcpy(buf, s, len);
157 f08fdedc 2003-11-23 devnull return f;
160 f08fdedc 2003-11-23 devnull void rewind(io *io)
162 f08fdedc 2003-11-23 devnull if(io->fd==-1) io->bufp=io->strp;
164 f08fdedc 2003-11-23 devnull io->bufp=io->ebuf=io->buf;
165 f08fdedc 2003-11-23 devnull Seek(io->fd, 0L, 0);
169 f08fdedc 2003-11-23 devnull void closeio(io *io)
171 f08fdedc 2003-11-23 devnull if(io->fd>=0) close(io->fd);
172 f08fdedc 2003-11-23 devnull if(io->strp) efree(io->strp);
173 f08fdedc 2003-11-23 devnull efree((char *)io);
175 f08fdedc 2003-11-23 devnull int emptybuf(io *f)
178 f08fdedc 2003-11-23 devnull if(f->fd==-1 || (n=Read(f->fd, f->buf, NBUF))<=0) return EOF;
179 f08fdedc 2003-11-23 devnull f->bufp=f->buf;
180 f08fdedc 2003-11-23 devnull f->ebuf=f->buf+n;
181 f08fdedc 2003-11-23 devnull return *f->bufp++&0xff;