/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright (c) 1980, 1990, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

/*
 * Build the makefile for the system, from
 * the information in the files files and the
 * additional files for the machine being compiled to.
 */
#include <sys/param.h>

#include <cerrno>
#include <ctype.h>
#include <err.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include <string>
#include <unordered_map>

#include "y.tab.h"
#include "config.h"
#include "configvers.h"

typedef std::unordered_map<std::string, std::string>    env_map;

static char *tail(char *);
static void do_clean(FILE *);
static void do_rules(FILE *);
static void do_xxfiles(char *, FILE *);
static void do_objs(FILE *);
static void do_before_depend(FILE *);
static void read_files(void);
static void sanitize_envline(char *result, const char *src);
static bool preprocess(char *line, char *result);
static void process_into_file(char *line, FILE *ofp);
static int process_into_map(char *line, env_map &emap);
static void dump_map(env_map &emap, FILE *ofp);

static void __printflike(1, 2)
errout(const char *fmt, ...)
{
        va_list ap;

        va_start(ap, fmt);
        vfprintf(stderr, fmt, ap);
        va_end(ap);
        exit(1);
}

/*
 * Lookup a file, by name.
 */
static struct file_list *
fl_lookup(char *file)
{
        struct file_list *fp;

        STAILQ_FOREACH(fp, &ftab, f_next) {
                if (eq(fp->f_fn, file))
                        return (fp);
        }
        return (0);
}

/*
 * Make a new file list entry
 */
static struct file_list *
new_fent(void)
{
        struct file_list *fp;

        fp = (struct file_list *) calloc(1, sizeof *fp);
        if (fp == NULL)
                err(EXIT_FAILURE, "calloc");
        STAILQ_INSERT_TAIL(&ftab, fp, f_next);
        return (fp);
}

/*
 * Open the correct Makefile and return it, or error out.
 */
FILE *
open_makefile_template(void)
{
        FILE *ifp;
        char line[BUFSIZ];

        snprintf(line, sizeof(line), "../../conf/Makefile.%s", machinename);
        ifp = fopen(line, "r");
        if (ifp == NULL) {
                snprintf(line, sizeof(line), "Makefile.%s", machinename);
                ifp = fopen(line, "r");
        }
        if (ifp == NULL)
                err(1, "%s", line);
        return (ifp);
}

/*
 * Build the makefile from the skeleton
 */
void
makefile(void)
{
        FILE *ifp, *ofp;
        char line[BUFSIZ];
        struct opt *op, *t;

        read_files();
        ifp = open_makefile_template();
        ofp = fopen(path("Makefile.new"), "w");
        if (ofp == NULL)
                err(1, "%s", path("Makefile.new"));
        fprintf(ofp, "KERN_IDENT=%s\n", ident);
        fprintf(ofp, "MACHINE=%s\n", machinename);
        fprintf(ofp, "MACHINE_ARCH=%s\n", machinearch);
        SLIST_FOREACH_SAFE(op, &mkopt, op_next, t) {
                fprintf(ofp, "%s=%s", op->op_name, op->op_value);
                while ((op = SLIST_NEXT(op, op_append)) != NULL)
                        fprintf(ofp, " %s", op->op_value);
                fprintf(ofp, "\n");
        }
        if (debugging)
                fprintf(ofp, "DEBUG=-g\n");
        if (*srcdir != '\0')
                fprintf(ofp,"S=%s\n", srcdir);
        while (fgets(line, BUFSIZ, ifp) != NULL) {
                if (*line != '%') {
                        fprintf(ofp, "%s", line);
                        continue;
                }
                if (eq(line, "%BEFORE_DEPEND\n"))
                        do_before_depend(ofp);
                else if (eq(line, "%OBJS\n"))
                        do_objs(ofp);
                else if (strncmp(line, "%FILES.", 7) == 0)
                        do_xxfiles(line, ofp);
                else if (eq(line, "%RULES\n"))
                        do_rules(ofp);
                else if (eq(line, "%CLEAN\n"))
                        do_clean(ofp);
                else if (strncmp(line, "%VERSREQ=", 9) == 0)
                        line[0] = '\0'; /* handled elsewhere */
                else
                        fprintf(stderr,
                            "Unknown %% construct in generic makefile: %s",
                            line);
        }
        (void) fclose(ifp);
        (void) fclose(ofp);
        moveifchanged("Makefile.new", "Makefile");
}

static void
sanitize_envline(char *result, const char *src)
{
        const char *eq;
        char c, *dst;
        bool leading;

        /* If there is no '=' it's not a well-formed name=value line. */
        if ((eq = strchr(src, '=')) == NULL) {
                *result = '\0';
                return;
        }
        dst = result;

        /* Copy chars before the '=', skipping any leading spaces/quotes. */
        leading = true;
        while (src < eq) {
                c = *src++;
                if (leading && (isspace(c) || c == '"'))
                        continue;
                *dst++ = c;
                leading = false;
        }

        /* If it was all leading space, we don't have a well-formed line. */
        if (leading) {
                *result = '\0';
                return;
        }

        /* Trim spaces/quotes immediately before the '=', then copy the '='. */
        while (isspace(dst[-1]) || dst[-1] == '"')
                --dst;
        *dst++ = *src++;

        /* Copy chars after the '=', skipping any leading whitespace. */
        leading = true;
        while ((c = *src++) != '\0') {
                if (leading && (isspace(c) || c == '"'))
                        continue;
                *dst++ = c;
                leading = false;
        }

        /* If it was all leading space, it's a valid 'var=' (nil value). */
        if (leading) {
                *dst = '\0';
                return;
        }

        /* Trim trailing whitespace and quotes. */
        while (isspace(dst[-1]) || dst[-1] == '"')
                --dst;

        *dst = '\0';
}

/*
 * Returns true if the caller may use the string.
 */
static bool
preprocess(char *line, char *result)
{
        char *s;

        /* Strip any comments */
        if ((s = strchr(line, '#')) != NULL)
                *s = '\0';
        sanitize_envline(result, line);
        /* Return true if it's non-empty */
        return (*result != '\0');
}

static void
process_into_file(char *line, FILE *ofp)
{
        char result[BUFSIZ];

        if (preprocess(line, result))
                fprintf(ofp, "\"%s\\0\"\n", result);
}

static int
process_into_map(char *line, env_map &emap)
{
        char result[BUFSIZ], *s;

        if (preprocess(line, result)) {
                s = strchr(result, '=');
                if (s == NULL)
                        return (EINVAL);
                *s = '\0';
                emap[result] = s + 1;
        }

        return (0);
}

static void
dump_map(env_map &emap, FILE *ofp)
{

        for (auto iter : emap) {
                fprintf(ofp, "\"%s=%s\\0\"\n", iter.first.c_str(),
                    iter.second.c_str());
        }
}

/*
 * Build hints.c from the skeleton
 */
void
makehints(void)
{
        FILE *ifp, *ofp;
        env_map emap;
        char line[BUFSIZ];
        struct hint *hint;

        ofp = fopen(path("hints.c.new"), "w");
        if (ofp == NULL)
                err(1, "%s", path("hints.c.new"));
        fprintf(ofp, "#include <sys/types.h>\n");
        fprintf(ofp, "#include <sys/systm.h>\n");
        fprintf(ofp, "\n");
        /*
         * Write out hintmode for older kernels. Remove when config(8) major
         * version rolls over.
         */
        if (versreq <= CONFIGVERS_ENVMODE_REQ)
                fprintf(ofp, "int hintmode = %d;\n",
                        !STAILQ_EMPTY(&hints) ? 1 : 0);
        fprintf(ofp, "char static_hints[] = {\n");
        STAILQ_FOREACH(hint, &hints, hint_next) {
                ifp = fopen(hint->hint_name, "r");
                if (ifp == NULL)
                        err(1, "%s", hint->hint_name);
                while (fgets(line, BUFSIZ, ifp) != NULL) {
                        if (process_into_map(line, emap) != 0)
                                errout("%s: malformed line: %s\n",
                                    hint->hint_name, line);
                }
                dump_map(emap, ofp);
                fclose(ifp);
        }
        fprintf(ofp, "\"\\0\"\n};\n");
        fclose(ofp);
        moveifchanged("hints.c.new", "hints.c");
}

/*
 * Build env.c from the skeleton
 */
void
makeenv(void)
{
        FILE *ifp, *ofp;
        env_map emap;
        char line[BUFSIZ];
        struct envvar *envvar;

        ofp = fopen(path("env.c.new"), "w");
        if (ofp == NULL)
                err(1, "%s", path("env.c.new"));
        fprintf(ofp, "#include <sys/types.h>\n");
        fprintf(ofp, "#include <sys/systm.h>\n");
        fprintf(ofp, "\n");
        /*
         * Write out envmode for older kernels. Remove when config(8) major
         * version rolls over.
         */
        if (versreq <= CONFIGVERS_ENVMODE_REQ)
                fprintf(ofp, "int envmode = %d;\n",
                        !STAILQ_EMPTY(&envvars) ? 1 : 0);
        fprintf(ofp, "char static_env[] = {\n");
        STAILQ_FOREACH(envvar, &envvars, envvar_next) {
                if (envvar->env_is_file) {
                        ifp = fopen(envvar->env_str, "r");
                        if (ifp == NULL)
                                err(1, "%s", envvar->env_str);
                        while (fgets(line, BUFSIZ, ifp) != NULL) {
                                if (process_into_map(line, emap) != 0)
                                        errout("%s: malformed line: %s\n",
                                            envvar->env_str, line);
                        }
                        dump_map(emap, ofp);
                        fclose(ifp);
                } else
                        process_into_file(envvar->env_str, ofp);
        }
        fprintf(ofp, "\"\\0\"\n};\n");
        fclose(ofp);
        moveifchanged("env.c.new", "env.c");
}

static void
read_file(char *fname)
{
        char ifname[MAXPATHLEN];
        FILE *fp;
        struct file_list *tp;
        struct device *dp;
        struct opt *op;
        struct includepath *ipath;
        configword wd;
        char *rfile, *compilewith, *depends, *clean, *fnamebuf, *warning;
        const char *objprefix;
        int compile, match, nreqs, std, filetype, negate,
            imp_rule, no_ctfconvert, no_obj, before_depend, nowerror;

        fp = fopen(fname, "r");
        if (fp == NULL) {
                SLIST_FOREACH(ipath, &includepath, path_next) {
                        asprintf(&fnamebuf, "%s/%s", ipath->path, fname);
                        if (fnamebuf != NULL) {
                                fp = fopen(fnamebuf, "r");
                                if (fp != NULL)
                                        break;
                                free(fnamebuf);
                        }
                }
        }
        if (fp == NULL)
                err(1, "%s", fname);
next:
        /*
         * include "filename"
         * filename    [ standard | optional ]
         *      [ dev* [ | dev* ... ] | [ no-obj ]
         *      [ compile-with "compile rule" [no-implicit-rule] ]
         *      [ dependency "dependency-list"] [ before-depend ]
         *      [ clean "file-list"] [ warning "text warning" ]
         *      [ obj-prefix "file prefix"]
         *      [ nowerror ] [ local ]
         */
        wd = get_word(fp);
        if (wd.eof()) {
                (void) fclose(fp);
                return;
        } 
        if (wd.eol())
                goto next;
        if (wd[0] == '#')
        {
                while (!(wd = get_word(fp)).eof() && !wd.eol())
                        ;
                goto next;
        }
        if (eq(wd, "include")) {
                wd = get_quoted_word(fp);
                if (wd.eof() || wd.eol())
                        errout("%s: missing include filename.\n", fname);
                (void) snprintf(ifname, sizeof(ifname), "../../%s",
                    wd->c_str());
                read_file(ifname);
                while (!(wd = get_word(fp)).eof() && !wd.eol())
                        ;
                goto next;
        }
        rfile = ns(wd);
        wd = get_word(fp);
        if (wd.eof())
                return;
        if (wd.eol())
                errout("%s: No type for %s.\n", fname, rfile);
        tp = fl_lookup(rfile);
        compile = 0;
        match = 1;
        nreqs = 0;
        compilewith = NULL;
        depends = NULL;
        clean = NULL;
        warning = NULL;
        std = 0;
        imp_rule = 0;
        no_ctfconvert = 0;
        no_obj = 0;
        before_depend = 0;
        nowerror = 0;
        negate = 0;
        filetype = NORMAL;
        objprefix = "";
        if (eq(wd, "standard"))
                std = 1;
        else if (!eq(wd, "optional"))
                errout("%s: \"%s\" %s must be optional or standard\n",
                    fname, wd->c_str(), rfile);
        for (wd = get_word(fp); !wd.eol(); wd = get_word(fp)) {
                if (wd.eof())
                        return;
                if (eq(wd, "!")) {
                        negate = 1;
                        continue;
                }
                if (eq(wd, "|")) {
                        if (nreqs == 0)
                                errout("%s: syntax error describing %s\n",
                                       fname, rfile);
                        compile += match;
                        match = 1;
                        nreqs = 0;
                        continue;
                }
                if (eq(wd, "no-ctfconvert")) {
                        no_ctfconvert++;
                        continue;
                }
                if (eq(wd, "no-obj")) {
                        no_obj++;
                        continue;
                }
                if (eq(wd, "no-implicit-rule")) {
                        if (compilewith == NULL)
                                errout("%s: alternate rule required when "
                                       "\"no-implicit-rule\" is specified for"
                                       " %s.\n",
                                       fname, rfile);
                        imp_rule++;
                        continue;
                }
                if (eq(wd, "before-depend")) {
                        before_depend++;
                        continue;
                }
                if (eq(wd, "dependency")) {
                        wd = get_quoted_word(fp);
                        if (wd.eof() || wd.eol())
                                errout("%s: %s missing dependency string.\n",
                                       fname, rfile);
                        depends = ns(wd);
                        continue;
                }
                if (eq(wd, "clean")) {
                        wd = get_quoted_word(fp);
                        if (wd.eof() || wd.eol())
                                errout("%s: %s missing clean file list.\n",
                                       fname, rfile);
                        clean = ns(wd);
                        continue;
                }
                if (eq(wd, "compile-with")) {
                        wd = get_quoted_word(fp);
                        if (wd.eof() || wd.eol())
                                errout("%s: %s missing compile command string.\n",
                                       fname, rfile);
                        compilewith = ns(wd);
                        continue;
                }
                if (eq(wd, "warning")) {
                        wd = get_quoted_word(fp);
                        if (wd.eof() || wd.eol())
                                errout("%s: %s missing warning text string.\n",
                                       fname, rfile);
                        warning = ns(wd);
                        continue;
                }
                if (eq(wd, "obj-prefix")) {
                        wd = get_quoted_word(fp);
                        if (wd.eof() || wd.eol())
                                errout("%s: %s missing object prefix string.\n",
                                       fname, rfile);
                        objprefix = ns(wd);
                        continue;
                }
                if (eq(wd, "nowerror")) {
                        nowerror = 1;
                        continue;
                }
                if (eq(wd, "local")) {
                        filetype = LOCAL;
                        continue;
                }
                if (eq(wd, "no-depend")) {
                        filetype = NODEPEND;
                        continue;
                }
                nreqs++;
                if (std)
                        errout("standard entry %s has optional inclusion specifier %s!\n",
                               rfile, wd->c_str());
                STAILQ_FOREACH(dp, &dtab, d_next)
                        if (eq(dp->d_name, wd)) {
                                if (negate)
                                        match = 0;
                                else
                                        dp->d_done |= DEVDONE;
                                goto nextparam;
                        }
                SLIST_FOREACH(op, &opt, op_next)
                        if (op->op_value == 0 &&
                            strcasecmp(op->op_name, wd) == 0) {
                                if (negate)
                                        match = 0;
                                goto nextparam;
                        }
                match &= negate;
nextparam:
                negate = 0;
        }
        compile += match;
        if (compile && tp == NULL) {
                if (std == 0 && nreqs == 0)
                        errout("%s: what is %s optional on?\n",
                               fname, rfile);
                tp = new_fent();
                tp->f_fn = rfile;
                tp->f_type = filetype;
                if (filetype == LOCAL)
                        tp->f_srcprefix = "";
                else
                        tp->f_srcprefix = "$S/";
                if (imp_rule)
                        tp->f_flags |= NO_IMPLCT_RULE;
                if (no_ctfconvert)
                        tp->f_flags |= NO_CTFCONVERT;
                if (no_obj)
                        tp->f_flags |= NO_OBJ | NO_CTFCONVERT;
                if (before_depend)
                        tp->f_flags |= BEFORE_DEPEND;
                if (nowerror)
                        tp->f_flags |= NOWERROR;
                tp->f_compilewith = compilewith;
                tp->f_depends = depends;
                tp->f_clean = clean;
                tp->f_warn = warning;
                tp->f_objprefix = objprefix;
        }
        goto next;
}

/*
 * Read in the information about files used in making the system.
 * Store it in the ftab linked list.
 */
static void
read_files(void)
{
        char fname[MAXPATHLEN];
        struct files_name *nl, *tnl;
        
        (void) snprintf(fname, sizeof(fname), "../../conf/files");
        read_file(fname);
        (void) snprintf(fname, sizeof(fname),
                        "../../conf/files.%s", machinename);
        read_file(fname);
        for (nl = STAILQ_FIRST(&fntab); nl != NULL; nl = tnl) {
                read_file(nl->f_name);
                tnl = STAILQ_NEXT(nl, f_next);
                free(nl->f_name);
                free(nl);
        }
}

static void
do_before_depend(FILE *fp)
{
        struct file_list *tp;
        int lpos, len;

        fputs("BEFORE_DEPEND=", fp);
        lpos = 15;
        STAILQ_FOREACH(tp, &ftab, f_next)
                if (tp->f_flags & BEFORE_DEPEND) {
                        len = strlen(tp->f_fn) + strlen(tp->f_srcprefix);
                        if (len + lpos > 72) {
                                lpos = 8;
                                fputs("\\\n\t", fp);
                        }
                        if (tp->f_flags & NO_IMPLCT_RULE)
                                lpos += fprintf(fp, "%s ", tp->f_fn);
                        else
                                lpos += fprintf(fp, "%s%s ", tp->f_srcprefix,
                                    tp->f_fn);
                }
        if (lpos != 8)
                putc('\n', fp);
}

static void
do_objs(FILE *fp)
{
        struct file_list *tp;
        int lpos, len;
        char *cp, och, *sp;

        fprintf(fp, "OBJS=");
        lpos = 6;
        STAILQ_FOREACH(tp, &ftab, f_next) {
                if (tp->f_flags & NO_OBJ)
                        continue;
                sp = tail(tp->f_fn);
                cp = sp + (len = strlen(sp)) - 1;
                och = *cp;
                *cp = 'o';
                len += strlen(tp->f_objprefix);
                if (len + lpos > 72) {
                        lpos = 8;
                        fprintf(fp, "\\\n\t");
                }
                fprintf(fp, "%s%s ", tp->f_objprefix, sp);
                lpos += len + 1;
                *cp = och;
        }
        if (lpos != 8)
                putc('\n', fp);
}

static void
do_xxfiles(char *tag, FILE *fp)
{
        struct file_list *tp;
        int lpos, len, slen;
        char *suff, *SUFF;

        if (tag[strlen(tag) - 1] == '\n')
                tag[strlen(tag) - 1] = '\0';

        suff = ns(tag + 7);
        SUFF = ns(suff);
        raisestr(SUFF);
        slen = strlen(suff);

        fprintf(fp, "%sFILES=", SUFF);
        free(SUFF);
        lpos = 8;
        STAILQ_FOREACH(tp, &ftab, f_next)
                if (tp->f_type != NODEPEND) {
                        len = strlen(tp->f_fn);
                        if (tp->f_fn[len - slen - 1] != '.')
                                continue;
                        if (strcasecmp(&tp->f_fn[len - slen], suff) != 0)
                                continue;
                        if (len + strlen(tp->f_srcprefix) + lpos > 72) {
                                lpos = 8;
                                fputs("\\\n\t", fp);
                        }
                        lpos += fprintf(fp, "%s%s ", tp->f_srcprefix, tp->f_fn);
                }
        free(suff);
        if (lpos != 8)
                putc('\n', fp);
}

static char *
tail(char *fn)
{
        char *cp;

        cp = strrchr(fn, '/');
        if (cp == NULL)
                return (fn);
        return (cp+1);
}

/*
 * Create the makerules for each file
 * which is part of the system.
 */
static void
do_rules(FILE *f)
{
        char *cp, *np, och;
        struct file_list *ftp;
        char *compilewith;
        char cmd[128];

        STAILQ_FOREACH(ftp, &ftab, f_next) {
                if (ftp->f_warn)
                        fprintf(stderr, "WARNING: %s\n", ftp->f_warn);
                cp = (np = ftp->f_fn) + strlen(ftp->f_fn) - 1;
                och = *cp;
                if (ftp->f_flags & NO_IMPLCT_RULE) {
                        if (ftp->f_depends)
                                fprintf(f, "%s%s: %s\n",
                                        ftp->f_objprefix, np, ftp->f_depends);
                        else
                                fprintf(f, "%s%s: \n", ftp->f_objprefix, np);
                }
                else {
                        *cp = '\0';
                        if (och == 'o') {
                                fprintf(f, "%s%so:\n\t-cp %s%so .\n\n",
                                        ftp->f_objprefix, tail(np),
                                        ftp->f_srcprefix, np);
                                continue;
                        }
                        if (ftp->f_depends) {
                                fprintf(f, "%s%so: %s%s%c %s\n",
                                        ftp->f_objprefix, tail(np),
                                        ftp->f_srcprefix, np, och,
                                        ftp->f_depends);
                        }
                        else {
                                fprintf(f, "%s%so: %s%s%c\n",
                                        ftp->f_objprefix, tail(np),
                                        ftp->f_srcprefix, np, och);
                        }
                }
                compilewith = ftp->f_compilewith;
                if (compilewith == NULL) {
                        const char *ftype = NULL;

                        switch (ftp->f_type) {
                        case NORMAL:
                                ftype = "NORMAL";
                                break;
                        default:
                                fprintf(stderr,
                                    "config: don't know rules for %s\n", np);
                                break;
                        }
                        snprintf(cmd, sizeof(cmd),
                            "${%s_%c%s}", ftype,
                            toupper(och),
                            ftp->f_flags & NOWERROR ? "_NOWERROR" : "");
                        compilewith = cmd;
                }
                *cp = och;
                if (strlen(ftp->f_objprefix))
                        fprintf(f, "\t%s %s%s\n", compilewith,
                            ftp->f_srcprefix, np);
                else
                        fprintf(f, "\t%s\n", compilewith);

                if (!(ftp->f_flags & NO_CTFCONVERT))
                        fprintf(f, "\t${NORMAL_CTFCONVERT}\n\n");
                else
                        fprintf(f, "\n");
        }
}

static void
do_clean(FILE *fp)
{
        struct file_list *tp;
        int lpos, len;

        fputs("CLEAN=", fp);
        lpos = 7;
        STAILQ_FOREACH(tp, &ftab, f_next)
                if (tp->f_clean) {
                        len = strlen(tp->f_clean);
                        if (len + lpos > 72) {
                                lpos = 8;
                                fputs("\\\n\t", fp);
                        }
                        fprintf(fp, "%s ", tp->f_clean);
                        lpos += len + 1;
                }
        if (lpos != 8)
                putc('\n', fp);
}

char *
raisestr(char *str)
{
        char *cp = str;

        while (*str) {
                if (islower(*str))
                        *str = toupper(*str);
                str++;
        }
        return (cp);
}