1da2e3ebdSchin /***********************************************************************
2da2e3ebdSchin * *
3da2e3ebdSchin * This software is part of the ast package *
4*b30d1939SAndy Fiddaman * Copyright (c) 1985-2011 AT&T Intellectual Property *
5da2e3ebdSchin * and is licensed under the *
6*b30d1939SAndy Fiddaman * Eclipse Public License, Version 1.0 *
77c2fbfb3SApril Chin * by AT&T Intellectual Property *
8da2e3ebdSchin * *
9da2e3ebdSchin * A copy of the License is available at *
10*b30d1939SAndy Fiddaman * http://www.eclipse.org/org/documents/epl-v10.html *
11*b30d1939SAndy Fiddaman * (with md5 checksum b35adb5213ca9657e911e9befb180842) *
12da2e3ebdSchin * *
13da2e3ebdSchin * Information and Software Systems Research *
14da2e3ebdSchin * AT&T Research *
15da2e3ebdSchin * Florham Park NJ *
16da2e3ebdSchin * *
17da2e3ebdSchin * Glenn Fowler <gsf@research.att.com> *
18da2e3ebdSchin * David Korn <dgk@research.att.com> *
19da2e3ebdSchin * Phong Vo <kpv@research.att.com> *
20da2e3ebdSchin * *
21da2e3ebdSchin ***********************************************************************/
22da2e3ebdSchin #pragma prototyped
23da2e3ebdSchin /*
24*b30d1939SAndy Fiddaman * standalone mini ast+sfio implementation
25da2e3ebdSchin */
26da2e3ebdSchin
27da2e3ebdSchin #include <ast.h>
28da2e3ebdSchin
29*b30d1939SAndy Fiddaman #define CHUNK 1024
30da2e3ebdSchin
31*b30d1939SAndy Fiddaman _Ast_info_t ast;
32*b30d1939SAndy Fiddaman
33*b30d1939SAndy Fiddaman int
astwinsize(int fd,int * lines,int * columns)34*b30d1939SAndy Fiddaman astwinsize(int fd, int* lines, int* columns)
35da2e3ebdSchin {
36*b30d1939SAndy Fiddaman if (lines)
37*b30d1939SAndy Fiddaman *lines = 24;
38*b30d1939SAndy Fiddaman if (columns)
39*b30d1939SAndy Fiddaman *columns = 80;
40*b30d1939SAndy Fiddaman return 0;
41*b30d1939SAndy Fiddaman }
42da2e3ebdSchin
43da2e3ebdSchin char*
sfgetr(Sfio_t * sp,int c,int z)44*b30d1939SAndy Fiddaman sfgetr(Sfio_t* sp, int c, int z)
45da2e3ebdSchin {
46*b30d1939SAndy Fiddaman register char* s;
47*b30d1939SAndy Fiddaman register char* e;
48da2e3ebdSchin
49*b30d1939SAndy Fiddaman static char* buf;
50*b30d1939SAndy Fiddaman static unsigned long siz;
51*b30d1939SAndy Fiddaman
52*b30d1939SAndy Fiddaman if (!buf)
53da2e3ebdSchin {
54*b30d1939SAndy Fiddaman siz = CHUNK;
55*b30d1939SAndy Fiddaman if (!(buf = newof(0, char, siz, 0)))
56da2e3ebdSchin return 0;
57da2e3ebdSchin }
58*b30d1939SAndy Fiddaman if (z < 0)
59*b30d1939SAndy Fiddaman return *buf ? buf : (char*)0;
60*b30d1939SAndy Fiddaman s = buf;
61*b30d1939SAndy Fiddaman e = s + siz;
62*b30d1939SAndy Fiddaman for (;;)
63da2e3ebdSchin {
64*b30d1939SAndy Fiddaman if (s >= e)
65da2e3ebdSchin {
66*b30d1939SAndy Fiddaman siz += CHUNK;
67*b30d1939SAndy Fiddaman if (!(buf = newof(buf, char, siz, 0)))
68*b30d1939SAndy Fiddaman return 0;
69*b30d1939SAndy Fiddaman s = buf + (siz - CHUNK);
70*b30d1939SAndy Fiddaman e = s + siz;
71da2e3ebdSchin }
72*b30d1939SAndy Fiddaman if ((c = sfgetc(sp)) == EOF)
73da2e3ebdSchin {
74*b30d1939SAndy Fiddaman *s = 0;
75da2e3ebdSchin return 0;
76da2e3ebdSchin }
77*b30d1939SAndy Fiddaman if (c == '\n')
78da2e3ebdSchin {
79*b30d1939SAndy Fiddaman *s = z ? 0 : c;
80*b30d1939SAndy Fiddaman break;
81da2e3ebdSchin }
82*b30d1939SAndy Fiddaman *s++ = c;
83*b30d1939SAndy Fiddaman }
84*b30d1939SAndy Fiddaman return buf;
85da2e3ebdSchin }
86