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author | Igor Pashev <pashev.igor@gmail.com> | 2012-06-24 22:28:35 +0000 |
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committer | Igor Pashev <pashev.igor@gmail.com> | 2012-06-24 22:28:35 +0000 |
commit | 3950ffe2a485479f6561c27364d3d7df5a21d124 (patch) | |
tree | 468c6e14449d1b1e279222ec32f676b0311917d2 /src/lib/libast/astsa/ast.c | |
download | ksh-upstream.tar.gz |
Imported Upstream version 93u+upstream
Diffstat (limited to 'src/lib/libast/astsa/ast.c')
-rw-r--r-- | src/lib/libast/astsa/ast.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/src/lib/libast/astsa/ast.c b/src/lib/libast/astsa/ast.c new file mode 100644 index 0000000..6428ebf --- /dev/null +++ b/src/lib/libast/astsa/ast.c @@ -0,0 +1,85 @@ +/*********************************************************************** +* * +* This software is part of the ast package * +* Copyright (c) 1985-2011 AT&T Intellectual Property * +* and is licensed under the * +* Eclipse Public License, Version 1.0 * +* by AT&T Intellectual Property * +* * +* A copy of the License is available at * +* http://www.eclipse.org/org/documents/epl-v10.html * +* (with md5 checksum b35adb5213ca9657e911e9befb180842) * +* * +* Information and Software Systems Research * +* AT&T Research * +* Florham Park NJ * +* * +* Glenn Fowler <gsf@research.att.com> * +* David Korn <dgk@research.att.com> * +* Phong Vo <kpv@research.att.com> * +* * +***********************************************************************/ +#pragma prototyped +/* + * standalone mini ast+sfio implementation + */ + +#include <ast.h> + +#define CHUNK 1024 + +_Ast_info_t ast; + +int +astwinsize(int fd, int* lines, int* columns) +{ + if (lines) + *lines = 24; + if (columns) + *columns = 80; + return 0; +} + +char* +sfgetr(Sfio_t* sp, int c, int z) +{ + register char* s; + register char* e; + + static char* buf; + static unsigned long siz; + + if (!buf) + { + siz = CHUNK; + if (!(buf = newof(0, char, siz, 0))) + return 0; + } + if (z < 0) + return *buf ? buf : (char*)0; + s = buf; + e = s + siz; + for (;;) + { + if (s >= e) + { + siz += CHUNK; + if (!(buf = newof(buf, char, siz, 0))) + return 0; + s = buf + (siz - CHUNK); + e = s + siz; + } + if ((c = sfgetc(sp)) == EOF) + { + *s = 0; + return 0; + } + if (c == '\n') + { + *s = z ? 0 : c; + break; + } + *s++ = c; + } + return buf; +} |