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/* Copyright (C) 2001, 2006 Free Software Foundation, Inc.
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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#include "libguile/_scm.h"
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#include "libguile/deprecation.h"
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#include "libguile/strings.h"
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#include "libguile/ports.h"
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/* Windows defines. */
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#define vsnprintf _vsnprintf
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#if (SCM_ENABLE_DEPRECATED == 1)
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struct issued_warning {
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struct issued_warning *prev;
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static struct issued_warning *issued_warnings;
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static int print_summary = 0;
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scm_c_issue_deprecation_warning (const char *msg)
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if (!SCM_WARN_DEPRECATED)
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struct issued_warning *iw;
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for (iw = issued_warnings; iw; iw = iw->prev)
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if (!strcmp (iw->message, msg))
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fprintf (stderr, "%s\n", msg);
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scm_puts (msg, scm_current_error_port ());
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scm_newline (scm_current_error_port ());
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iw = malloc (sizeof (struct issued_warning));
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if (msg == NULL || iw == NULL)
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iw->prev = issued_warnings;
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scm_c_issue_deprecation_warning_fmt (const char *msg, ...)
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vsnprintf (buf, 511, msg, ap);
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scm_c_issue_deprecation_warning (buf);
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SCM_DEFINE(scm_issue_deprecation_warning,
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"issue-deprecation-warning", 0, 0, 1,
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"Output @var{msgs} to @code{(current-error-port)} when this "
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"is the first call to @code{issue-deprecation-warning} with "
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"this specific @var{msgs}. Do nothing otherwise. "
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"The argument @var{msgs} should be a list of strings; "
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"they are printed in turn, each one followed by a newline.")
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#define FUNC_NAME s_scm_issue_deprecation_warning
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if (!SCM_WARN_DEPRECATED)
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SCM nl = scm_from_locale_string ("\n");
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SCM msgs_nl = SCM_EOL;
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while (scm_is_pair (msgs))
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if (msgs_nl != SCM_EOL)
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msgs_nl = scm_cons (nl, msgs_nl);
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msgs_nl = scm_cons (SCM_CAR (msgs), msgs_nl);
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msgs = SCM_CDR (msgs);
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msgs_nl = scm_string_append (scm_reverse_x (msgs_nl, SCM_EOL));
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c_msgs = scm_to_locale_string (msgs_nl);
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scm_c_issue_deprecation_warning (c_msgs);
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return SCM_UNSPECIFIED;
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print_deprecation_summary (void)
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"Some deprecated features have been used. Set the environment\n"
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"variable GUILE_WARN_DEPRECATED to \"detailed\" and rerun the\n"
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"program to get more information. Set it to \"no\" to suppress\n"
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"this message.\n", stderr);
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#endif /* SCM_ENABLE_DEPRECATED == 1 */
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SCM_DEFINE(scm_include_deprecated_features,
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"include-deprecated-features", 0, 0, 0,
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"Return @code{#t} iff deprecated features should be included "
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"in public interfaces.")
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#define FUNC_NAME s_scm_include_deprecated_features
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return scm_from_bool (SCM_ENABLE_DEPRECATED == 1);
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scm_init_deprecation ()
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#if (SCM_ENABLE_DEPRECATED == 1)
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const char *level = getenv ("GUILE_WARN_DEPRECATED");
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level = SCM_WARN_DEPRECATED_DEFAULT;
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if (!strcmp (level, "detailed"))
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SCM_WARN_DEPRECATED = 1;
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else if (!strcmp (level, "no"))
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SCM_WARN_DEPRECATED = 0;
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SCM_WARN_DEPRECATED = 0;
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atexit (print_deprecation_summary);
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#include "libguile/deprecation.x"