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author | Jim Blandy <jimb@red-bean.com> | 1996-07-25 22:56:11 +0000 |
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committer | Jim Blandy <jimb@red-bean.com> | 1996-07-25 22:56:11 +0000 |
commit | 0f2d19dd46f83f41177f61d585732b32a866d613 (patch) | |
tree | 86bf67b8c05d36d8181d393e7d706785a74ee777 /libguile/genio.c | |
download | guile-0f2d19dd46f83f41177f61d585732b32a866d613.tar.gz |
maintainer changed: was lord, now jimb; first import
Diffstat (limited to 'libguile/genio.c')
-rw-r--r-- | libguile/genio.c | 533 |
1 files changed, 533 insertions, 0 deletions
diff --git a/libguile/genio.c b/libguile/genio.c new file mode 100644 index 000000000..6bc082536 --- /dev/null +++ b/libguile/genio.c @@ -0,0 +1,533 @@ +/* Copyright (C) 1995,1996 Free Software Foundation, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this software; see the file COPYING. If not, write to + * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. + * + * As a special exception, the Free Software Foundation gives permission + * for additional uses of the text contained in its release of GUILE. + * + * The exception is that, if you link the GUILE library with other files + * to produce an executable, this does not by itself cause the + * resulting executable to be covered by the GNU General Public License. + * Your use of that executable is in no way restricted on account of + * linking the GUILE library code into it. + * + * This exception does not however invalidate any other reasons why + * the executable file might be covered by the GNU General Public License. + * + * This exception applies only to the code released by the + * Free Software Foundation under the name GUILE. If you copy + * code from other Free Software Foundation releases into a copy of + * GUILE, as the General Public License permits, the exception does + * not apply to the code that you add in this way. To avoid misleading + * anyone as to the status of such modified files, you must delete + * this exception notice from them. + * + * If you write modifications of your own for GUILE, it is your choice + * whether to permit this exception to apply to your modifications. + * If you do not wish that, delete this exception notice. + */ + +#include "extchrs.h" +#include <stdio.h> +#include "_scm.h" + + + + +#ifdef __STDC__ +static void +scm_putc (int c, SCM port) +#else +static void +scm_putc (c, port) + int c; + SCM port; +#endif +{ + scm_sizet i = SCM_PTOBNUM (port); + SCM_SYSCALL ((scm_ptobs[i].fputc) (c, SCM_STREAM (port))); +} + + +#ifdef __STDC__ +static void +scm_puts (char *s, SCM port) +#else +static void +scm_puts (s, port) + char *s; + SCM port; +#endif +{ + scm_sizet i = SCM_PTOBNUM (port); + SCM_SYSCALL ((scm_ptobs[i].fputs) (s, SCM_STREAM (port))); +#ifdef TRANSCRIPT_SUPPORT + if (scm_trans && (port == def_outp || port == cur_errp)) + SCM_SYSCALL (fputs (s, scm_trans)); +#endif +} + + +#ifdef __STDC__ +static int +scm_lfwrite (char *ptr, scm_sizet size, scm_sizet nitems, SCM port) +#else +static int +scm_lfwrite (ptr, size, nitems, port) + char *ptr; + scm_sizet size; + scm_sizet nitems; + SCM port; +#endif +{ + int ret; + scm_sizet i = SCM_PTOBNUM (port); + SCM_SYSCALL (ret = (scm_ptobs[i].fwrite(ptr, size, nitems, SCM_STREAM (port)))); +#ifdef TRANSCRIPT_SUPPORT + if (scm_trans && (port == def_outp || port == cur_errp)) + SCM_SYSCALL (fwrite (ptr, size, nitems, scm_trans)); +#endif + return ret; +} + + + + +#ifdef __STDC__ +void +scm_gen_putc (int c, SCM port) +#else +void +scm_gen_putc (c, port) + int c; + SCM port; +#endif +{ + switch (SCM_PORT_REPRESENTATION (port)) + { + case scm_regular_port: + { + /* Nothing good to do with extended chars here... + * just truncate them. + */ + scm_putc ((unsigned char)c, port); + break; + } + + case scm_mb_port: + { + char buf[256]; + int len; + + SCM_ASSERT (XMB_CUR_MAX < sizeof (buf), SCM_MAKICHR (c), + "huge translation", "scm_gen_putc"); + + len = xwctomb (buf, c); + + SCM_ASSERT ((len >= 0), SCM_MAKICHR (c), "bogus character", "scm_gen_putc"); + + if (len == 0) + scm_putc (0, port); + else + { + int x; + for (x = 0; x < len; ++x) + scm_putc (buf[x], port); + } + break; + } + + case scm_wchar_port: + { + scm_putc (((unsigned char)(c >> 8) & 0xff), port); + scm_putc ((unsigned char)(c & 0xff), port); + break; + } + } +} + + + + + +#ifdef __STDC__ +void +scm_gen_puts (enum scm_string_representation_type rep, + char *str_data, + SCM port) +#else +void +scm_gen_puts (rep, str_data, port) + enum scm_string_representation_type rep; + unsigned char *str_data; + SCM port; +#endif +{ + switch (rep) + { + + case scm_regular_string: + switch (SCM_PORT_REPRESENTATION (port)) + { + case scm_regular_port: + case scm_mb_port: + scm_puts (str_data, port); + return; + case scm_wchar_port: + { + while (*str_data) + { + scm_putc (0, port); + scm_putc (*str_data, port); + ++str_data; + } + return; + } + } + + case scm_mb_string: + switch (SCM_PORT_REPRESENTATION (port)) + { + case scm_regular_port: + case scm_mb_port: + scm_puts (str_data, port); + return; + case scm_wchar_port: + { + xwchar_t output; + int len; + int size; + + size = strlen (str_data); + while (size) + { + len = xmbtowc (&output, str_data, size); + SCM_ASSERT ((len > 0), SCM_MAKINUM (*str_data), "bogus character", "scm_gen_puts"); + scm_putc ((output >> 8) & 0xff, port); + scm_putc (output & 0xff, port); + size -= len; + str_data += len; + } + return; + } + } + + case scm_wchar_string: + { + xwchar_t * wstr_data; + + wstr_data = (xwchar_t *)wstr_data; + switch (SCM_PORT_REPRESENTATION (port)) + { + case scm_regular_port: + while (*wstr_data) + { + scm_putc ((unsigned char) *wstr_data, port); + ++wstr_data; + } + return; + + case scm_mb_port: + { + char buf[256]; + SCM_ASSERT (XMB_CUR_MAX < sizeof (buf), SCM_BOOL_F, + "huge translation", "scm_gen_puts"); + + while (*wstr_data) + { + int len; + + len = xwctomb (buf, *wstr_data); + + SCM_ASSERT ((len > 0), SCM_MAKINUM (*wstr_data), "bogus character", "scm_gen_puts"); + + { + int x; + for (x = 0; x < len; ++x) + scm_putc (buf[x], port); + } + ++wstr_data; + } + return; + } + + case scm_wchar_port: + { + int len; + for (len = 0; wstr_data[len]; ++len) + ; + scm_lfwrite (str_data, sizeof (xwchar_t), len, port); + return; + } + } + } + } +} + + + + +#ifdef __STDC__ +void +scm_gen_write (enum scm_string_representation_type rep, char *str_data, scm_sizet nitems, SCM port) +#else +void +scm_gen_write (rep, str_data, nitems, port) + enum scm_string_representation_type rep; + char *str_data; + scm_sizet nitems; + SCM port; +#endif +{ + /* is nitems bytes or characters in the mb_string case? */ + + switch (rep) + { + case scm_regular_string: + switch (SCM_PORT_REPRESENTATION (port)) + { + case scm_regular_port: + case scm_mb_port: + scm_lfwrite (str_data, 1, nitems, port); + return; + case scm_wchar_port: + { + while (nitems) + { + scm_putc (0, port); + scm_putc (*str_data, port); + ++str_data; + --nitems; + } + return; + } + } + + case scm_mb_string: + switch (SCM_PORT_REPRESENTATION (port)) + { + case scm_regular_port: + case scm_mb_port: + scm_lfwrite (str_data, 1, nitems, port); + return; + + case scm_wchar_port: + { + xwchar_t output; + int len; + + while (nitems) + { + len = xmbtowc (&output, str_data, nitems); + SCM_ASSERT ((len > 0), SCM_MAKINUM (*str_data), "bogus character", "scm_gen_puts"); + scm_putc ((output >> 8) & 0xff, port); + scm_putc (output & 0xff, port); + nitems -= len; + str_data += len; + } + return; + } + } + + case scm_wchar_string: + { + xwchar_t * wstr_data; + + wstr_data = (xwchar_t *)wstr_data; + switch (SCM_PORT_REPRESENTATION (port)) + { + case scm_regular_port: + while (nitems) + { + scm_putc ((unsigned char) *wstr_data, port); + ++wstr_data; + --nitems; + } + return; + + case scm_mb_port: + { + char buf[256]; + SCM_ASSERT (XMB_CUR_MAX < sizeof (buf), SCM_BOOL_F, + "huge translation", "scm_gen_puts"); + + while (nitems) + { + int len; + + len = xwctomb (buf, *wstr_data); + + SCM_ASSERT ((len > 0), SCM_MAKINUM (*wstr_data), "bogus character", "scm_gen_puts"); + + { + int x; + for (x = 0; x < len; ++x) + scm_putc (buf[x], port); + } + ++wstr_data; + --nitems; + } + return; + } + + case scm_wchar_port: + { + scm_lfwrite (str_data, sizeof (xwchar_t), nitems, port); + return; + } + } + } + } +} + + + + +#ifdef __STDC__ +static int +scm_getc (SCM port) +#else +static int +scm_getc (port) + SCM port; +#endif +{ + FILE *f; + int c; + scm_sizet i; + + f = (FILE *)SCM_STREAM (port); + i = SCM_PTOBNUM (port); + SCM_SYSCALL (c = (scm_ptobs[i].fgetc) (f)); + return c; +} + +#ifdef __STDC__ +int +scm_gen_getc (SCM port) +#else +int +scm_gen_getc (port) + SCM port; +#endif +{ + int c; + + /* One char may be stored in the high bits of (car port) orre@nada.kth.se. */ + if (SCM_CRDYP (port)) + { + c = SCM_CGETUN (port); + SCM_CLRDY (port); /* Clear ungetted char */ + + return_c: + if (c == '\n') + { + SCM_INCLINE (port); + } + else if (c == '\t') + { + SCM_TABCOL (port); + } + else + { + SCM_INCCOL (port); + } + return c; + } + + + switch (SCM_PORT_REPRESENTATION (port)) + { + case scm_regular_port: + c = scm_getc (port); + goto return_c; + + case scm_mb_port: + { + int x; + unsigned char buf[256]; + int c; + + SCM_ASSERT (XMB_CUR_MAX < sizeof (buf), SCM_BOOL_F, + "huge translation", "scm_gen_puts"); + + x = 0; + while (1) + { + xwchar_t out; + c = scm_getc (port); + + if (c == EOF) + return EOF; + + buf[x] = c; + + if (xmbtowc (&out, buf, x + 1) > 0) + { + c = out; + goto return_c; + } + + SCM_ASSERT (x < sizeof (buf), SCM_BOOL_F, + "huge translation", "scm_gen_getc"); + ++x; + } + } + + + case scm_wchar_port: + { + int hi; + int lo; + hi = scm_getc (port); + lo = (hi == EOF + ? EOF + : scm_getc (port)); + c = ((hi == EOF) + ? EOF + : ((hi << 8) | lo)); + goto return_c; + } + + + default: + return EOF; + } +} + +#ifdef __STDC__ +void +scm_gen_ungetc (int c, SCM port) +#else +void +scm_gen_ungetc (c, port) + int c; + SCM port; +#endif +{ +/* SCM_ASSERT(!SCM_CRDYP(port), port, SCM_ARG2, "too many scm_gen_ungetc");*/ + SCM_CUNGET (c, port); + if (c == '\n') + { + /* What should col be in this case? + * We'll leave it at -1. + */ + SCM_LINUM (port) -= 1; + } + else + SCM_COL(port) -= 1; +} + + |