summaryrefslogtreecommitdiff
path: root/gr-run-waveform/xyzzy-load.c
diff options
context:
space:
mode:
Diffstat (limited to 'gr-run-waveform/xyzzy-load.c')
-rw-r--r--gr-run-waveform/xyzzy-load.c436
1 files changed, 0 insertions, 436 deletions
diff --git a/gr-run-waveform/xyzzy-load.c b/gr-run-waveform/xyzzy-load.c
deleted file mode 100644
index 46b7376da..000000000
--- a/gr-run-waveform/xyzzy-load.c
+++ /dev/null
@@ -1,436 +0,0 @@
-/* Copyright (C) 1995,1996,1998,1999,2000,2001,2004,2006,2010 Free Software Foundation, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 3 of the License, or (at your option) any later version.
- *
- * This library 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-
-
-#ifdef HAVE_CONFIG_H
-# include <grconfig.h>
-#endif
-
-#include <string.h>
-#include <stdio.h>
-
-/* libpath.h is generated whenever the Makefile is rebuilt */
-#include "libpath.h"
-
-#include <libguile/__scm.h>
-#include <libguile/fports.h>
-#include <libguile/read.h>
-#include <libguile/eval.h>
-#include <libguile/throw.h>
-#include <libguile/alist.h>
-#include <libguile/dynwind.h>
-#include <libguile/root.h>
-#include <libguile/strings.h>
-#include <libguile/modules.h>
-#include <libguile/lang.h>
-#include <libguile/chars.h>
-#include <libguile/tags.h>
-#include <libguile/snarf.h>
-#include <libguile/srfi-13.h>
-#include <libguile/validate.h>
-#include <libguile/load.h>
-#include <libguile/fluids.h>
-
-// these headers where not in the original version of this file.
-#include <libguile/boolean.h>
-#include <libguile/pairs.h>
-#include <libguile/gc.h>
-#include <libguile/variable.h>
-
-#include <sys/types.h>
-#include <sys/stat.h>
-
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif /* HAVE_UNISTD_H */
-
-#ifndef R_OK
-#define R_OK 4
-#endif
-
-#include "xyzzy.h"
-
-// This is the magic number used when loading files
-static const char *MAGIC = "-XyZzY-";
-
-static SCM scm_listofnullstr;
-
-static SCM *scm_loc_load_hook;
-static SCM *scm_loc_load_path;
-static SCM *scm_loc_load_extensions;
-
-/* The current reader (a fluid). */
-static SCM *scm_loc_current_reader;
-
-
-/* Utility functions for assembling C strings in a buffer.
- */
-
-struct stringbuf {
- char *buf, *ptr;
- size_t buf_len;
-};
-
-static void
-stringbuf_free (void *data)
-{
- struct stringbuf *buf = (struct stringbuf *)data;
- free (buf->buf);
-}
-
-static void
-stringbuf_grow (struct stringbuf *buf)
-{
- size_t ptroff = buf->ptr - buf->buf;
- buf->buf_len *= 2;
- buf->buf = scm_realloc (buf->buf, buf->buf_len);
- buf->ptr = buf->buf + ptroff;
-}
-
-static void
-stringbuf_cat_locale_string (struct stringbuf *buf, SCM str)
-{
- size_t max_len = buf->buf_len - (buf->ptr - buf->buf) - 1;
- size_t len = scm_to_locale_stringbuf (str, buf->ptr, max_len);
- if (len > max_len)
- {
- /* buffer is too small, double its size and try again.
- */
- stringbuf_grow (buf);
- stringbuf_cat_locale_string (buf, str);
- }
- else
- {
- /* string fits, terminate it and check for embedded '\0'.
- */
- buf->ptr[len] = '\0';
- if (strlen (buf->ptr) != len)
- scm_misc_error (NULL,
- "string contains #\\nul character: ~S",
- scm_list_1 (str));
- buf->ptr += len;
- }
-}
-
-static void
-stringbuf_cat (struct stringbuf *buf, char *str)
-{
- size_t max_len = buf->buf_len - (buf->ptr - buf->buf) - 1;
- size_t len = strlen (str);
- if (len > max_len)
- {
- /* buffer is too small, double its size and try again.
- */
- stringbuf_grow (buf);
- stringbuf_cat (buf, str);
- }
- else
- {
- /* string fits, copy it into buffer.
- */
- strcpy (buf->ptr, str);
- buf->ptr += len;
- }
-}
-
-/* Search PATH for a directory containing a file named FILENAME.
- The file must be readable, and not a directory.
- If we find one, return its full filename; otherwise, return #f.
- If FILENAME is absolute, return it unchanged.
- If given, EXTENSIONS is a list of strings; for each directory
- in PATH, we search for FILENAME concatenated with each EXTENSION. */
-SCM_DEFINE (scm_xyzzy_search_path, "xyyzy-search-path", 2, 1, 0,
- (SCM path, SCM filename, SCM extensions),
- "Search @var{path} for a directory containing a file named\n"
- "@var{filename}. The file must be readable, and not a directory.\n"
- "If we find one, return its full filename; otherwise, return\n"
- "@code{#f}. If @var{filename} is absolute, return it unchanged.\n"
- "If given, @var{extensions} is a list of strings; for each\n"
- "directory in @var{path}, we search for @var{filename}\n"
- "concatenated with each @var{extension}.")
-#define FUNC_NAME s_scm_xyzzy_search_path
-{
- struct stringbuf buf;
- char *filename_chars;
- size_t filename_len;
- SCM result = SCM_BOOL_F;
-
- if (SCM_UNBNDP (extensions))
- extensions = SCM_EOL;
-
- /* fprintf(stderr, "TRACE %s: %d %s\n", __FUNCTION__, __LINE__, scm_to_locale_string(SCM_CAR(path))); */
-
- scm_dynwind_begin (0);
- filename_chars = scm_to_locale_string (filename);
- filename_len = strlen (filename_chars);
- scm_dynwind_free (filename_chars);
-
- /* If FILENAME is absolute, return it unchanged. */
-#ifdef __MINGW32__
- if (((filename_len >= 1) &&
- (filename_chars[0] == '/' || filename_chars[0] == '\\')) ||
- ((filename_len >= 3) && filename_chars[1] == ':' &&
- ((filename_chars[0] >= 'a' && filename_chars[0] <= 'z') ||
- (filename_chars[0] >= 'A' && filename_chars[0] <= 'Z')) &&
- (filename_chars[2] == '/' || filename_chars[2] == '\\')))
-#else
- if (filename_len >= 1 && filename_chars[0] == '/')
-#endif
- {
- scm_dynwind_end ();
- return filename;
- }
-
- /* If FILENAME has an extension, don't try to add EXTENSIONS to it. */
- {
- char *endp;
-
- for (endp = filename_chars + filename_len - 1;
- endp >= filename_chars;
- endp--)
- {
- if (*endp == '.')
- {
- /* This filename already has an extension, so cancel the
- list of extensions. */
- extensions = SCM_EOL;
- break;
- }
-#ifdef __MINGW32__
- else if (*endp == '/' || *endp == '\\')
-#else
- else if (*endp == '/')
-#endif
- /* This filename has no extension, so keep the current list
- of extensions. */
- break;
- }
- }
-
- /* This simplifies the loop below a bit.
- */
- if (scm_is_null (extensions))
- extensions = scm_listofnullstr;
-
- buf.buf_len = 512;
- buf.buf = scm_malloc (buf.buf_len);
- scm_dynwind_unwind_handler (stringbuf_free, &buf, SCM_F_WIND_EXPLICITLY);
-
- /* Try every path element.
- */
- for (; scm_is_pair (path); path = SCM_CDR (path))
- {
- SCM dir = SCM_CAR (path);
- SCM exts;
- size_t sans_ext_len;
-
- buf.ptr = buf.buf;
- stringbuf_cat_locale_string (&buf, dir);
-
- /* Concatenate the path name and the filename. */
-
-#ifdef __MINGW32__
- if ((buf.ptr > buf.buf) && (buf.ptr[-1] != '/') && (buf.ptr[-1] != '\\'))
-#else
- if ((buf.ptr > buf.buf) && (buf.ptr[-1] != '/'))
-#endif
- stringbuf_cat (&buf, "/");
-
- stringbuf_cat (&buf, filename_chars);
- sans_ext_len = buf.ptr - buf.buf;
-
- /* Try every extension. */
- for (exts = extensions; scm_is_pair (exts); exts = SCM_CDR (exts))
- {
- SCM ext = SCM_CAR (exts);
- struct stat mode;
-
- buf.ptr = buf.buf + sans_ext_len;
- stringbuf_cat_locale_string (&buf, ext);
-
- /* If the file exists at all, we should return it. If the
- file is inaccessible, then that's an error. */
- /* fprintf(stderr, "TRACE %s: %d: \"%s\"\n", __FUNCTION__, __LINE__, buf.buf); */
-
- if (xyzzy_file_exists(buf.buf)
- || (stat (buf.buf, &mode) == 0
- && ! (mode.st_mode & S_IFDIR)))
- {
- result = scm_from_locale_string (buf.buf);
- goto end;
- }
- }
-
- if (!SCM_NULL_OR_NIL_P (exts))
- scm_wrong_type_arg_msg (NULL, 0, extensions, "proper list");
- }
-
- if (!SCM_NULL_OR_NIL_P (path))
- scm_wrong_type_arg_msg (NULL, 0, path, "proper list");
-
- end:
-
- scm_dynwind_end ();
-
- return result;
-}
-#undef FUNC_NAME
-
-SCM_DEFINE (scm_xyzzy_primitive_load, "xyzzy-primitive-load", 1, 0, 0,
- (SCM filename),
- "Load the file named @var{filename} and evaluate its contents in\n"
- "the top-level environment. The load paths are not searched;\n"
- "@var{filename} must either be a full pathname or be a pathname\n"
- "relative to the current directory. If the variable\n"
- "@code{%load-hook} is defined, it should be bound to a procedure\n"
- "that will be called before any code is loaded. See the\n"
- "documentation for @code{%load-hook} later in this section.")
-#define FUNC_NAME s_scm_xyzzy_primitive_load
-{
- SCM hook = *scm_loc_load_hook;
- SCM_VALIDATE_STRING (1, filename);
-
- char *ptr = scm_to_locale_string(filename);
- /* fprintf(stderr, "TRACE %s: %d: %s\n", __FUNCTION__, __LINE__, ptr); */
-
- if (scm_is_true (hook) && scm_is_false (scm_procedure_p (hook)))
- SCM_MISC_ERROR ("value of %load-hook is neither a procedure nor #f",
- SCM_EOL);
-
- if (!scm_is_false (hook))
- scm_call_1 (hook, filename);
-
- { /* scope */
- SCM port;
-
- if (xyzzy_file_exists(ptr)){
- /* fprintf(stderr, "TRACE: file %s is a XYZZY file system file!\n", ptr); */
- port = xyzzy_open_file(filename);
- } else {
- port = scm_open_file (filename, scm_from_locale_string ("r"));
- }
- scm_dynwind_begin (SCM_F_DYNWIND_REWINDABLE);
- scm_i_dynwind_current_load_port (port);
-
- while (1)
- {
- SCM reader, form;
-
- /* Lookup and use the current reader to read the next expression. */
- reader = scm_fluid_ref(*scm_loc_current_reader);
- if (reader == SCM_BOOL_F)
- form = scm_read (port);
- else
- form = scm_call_1 (reader, port);
-
- if (SCM_EOF_OBJECT_P (form))
- break;
-
- scm_primitive_eval_x (form);
- }
-
- scm_dynwind_end ();
- scm_close_port (port);
- }
- return SCM_UNSPECIFIED;
-}
-#undef FUNC_NAME
-
-/* Search %load-path for a directory containing a file named FILENAME.
- The file must be readable, and not a directory.
- If we find one, return its full filename; otherwise, return #f.
- If FILENAME is absolute, return it unchanged. */
-SCM_DEFINE (scm_xyzzy_sys_search_load_path, "%xyzzy-search-load-path", 1, 0, 0,
- (SCM filename),
- "Search @var{%load-path} for the file named @var{filename},\n"
- "which must be readable by the current user. If @var{filename}\n"
- "is found in the list of paths to search or is an absolute\n"
- "pathname, return its full pathname. Otherwise, return\n"
- "@code{#f}. Filenames may have any of the optional extensions\n"
- "in the @code{%load-extensions} list; @code{%search-load-path}\n"
- "will try each extension automatically.")
-#define FUNC_NAME s_scm_xyzzy_sys_search_load_path
-{
- SCM loadpath = scm_c_lookup("%load-path");
- SCM path = scm_variable_ref(loadpath);
- SCM exts = *scm_loc_load_extensions;
- SCM_VALIDATE_STRING (1, filename);
-
- /* fprintf(stderr, "TRACE %s: %d:\n", __FUNCTION__, __LINE__); */
-
- if (scm_ilength (path) < 0)
- SCM_MISC_ERROR ("%load-path is not a proper list", SCM_EOL);
- if (scm_ilength (exts) < 0)
- SCM_MISC_ERROR ("%load-extension list is not a proper list", SCM_EOL);
-
- return scm_xyzzy_search_path (path, filename, exts);
-}
-#undef FUNC_NAME
-
-SCM_DEFINE (scm_xyzzy_primitive_load_path, "xyzzy-primitive-load-path", 1, 0, 0,
- (SCM filename),
- "Search @var{%load-path} for the file named @var{filename} and\n"
- "load it into the top-level environment. If @var{filename} is a\n"
- "relative pathname and is not found in the list of search paths,\n"
- "an error is signalled.")
-#define FUNC_NAME s_scm_xyzzy_primitive_load_path
-{
- SCM full_filename;
- char *filename_chars;
- size_t filename_len;
-
- filename_chars = scm_to_locale_string (filename);
- filename_len = strlen (filename_chars);
- scm_dynwind_free (filename_chars);
-
- full_filename = scm_xyzzy_sys_search_load_path (filename);
-
- /* fprintf(stderr, "TRACE %s: %d: %s\n", __FUNCTION__, __LINE__, scm_to_locale_string(full_filename)); */
-
- if (scm_is_false (full_filename))
- SCM_MISC_ERROR ("Unable to find the file ~S in load path",
- scm_list_1 (filename));
-
- return scm_xyzzy_primitive_load (full_filename);
-}
-#undef FUNC_NAME
-
-SCM_DEFINE (scm_xyzzy_open_file, "xyzzy-open-file", 1, 0, 0,
- (SCM filename),
- "Return a new port which reads from @var{filename}")
-#define FUNC_NAME s_scm_xyzzy_open_file
-{
- return xyzzy_open_file (filename);
-}
-#undef FUNC_NAME
-
-void
-scm_xyzzy_init (void)
-{
- scm_listofnullstr = scm_permanent_object (scm_list_1 (scm_nullstr));
- scm_loc_load_extensions = SCM_VARIABLE_LOC(scm_c_lookup("%load-extensions"));
- scm_loc_load_hook = SCM_VARIABLE_LOC (scm_c_lookup("%load-hook"));
- scm_loc_current_reader = SCM_VARIABLE_LOC (scm_c_lookup("current-reader"));
-
- /* initialize our functions in the scheme VM */
- scm_c_define_gsubr ("xyzzy-open-file", 1, 0, 0, (SCM (*)()) scm_xyzzy_open_file);
- scm_c_define_gsubr ("xyzzy-primitive-load", 1, 0, 0, (SCM (*)()) scm_xyzzy_primitive_load);
- scm_c_define_gsubr ("xyzzy-primitive-load-path", 1, 0, 0, (SCM (*)()) scm_xyzzy_primitive_load_path);
- scm_c_define_gsubr ("%xyzzy-search-load-path", 1, 0, 0, (SCM (*)()) scm_xyzzy_sys_search_load_path);
- scm_c_define_gsubr ("xyzzy-search-path", 2, 1, 0, (SCM (*)()) scm_xyzzy_search_path);
-}
generated by cgit (git 2.34.1) at 2024-12-20 08:18:40 +0000